+++ /dev/null
-/* Source code parsing and tree node generation for the GNU compiler
- for the Java(TM) language.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
- Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com)
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.
-
-Java and all Java-based marks are trademarks or registered trademarks
-of Sun Microsystems, Inc. in the United States and other countries.
-The Free Software Foundation is independent of Sun Microsystems, Inc. */
-
-/* This file parses java source code and issues a tree node image
-suitable for code generation (byte code and targeted CPU assembly
-language).
-
-The grammar conforms to the Java grammar described in "The Java(TM)
-Language Specification. J. Gosling, B. Joy, G. Steele. Addison Wesley
-1996, ISBN 0-201-63451-1"
-
-The following modifications were brought to the original grammar:
-
-method_body: added the rule '| block SC_TK'
-static_initializer: added the rule 'static block SC_TK'.
-
-Note: All the extra rules described above should go away when the
- empty_statement rule will work.
-
-statement_nsi: 'nsi' should be read no_short_if.
-
-Some rules have been modified to support JDK1.1 inner classes
-definitions and other extensions. */
-
-%{
-#include "config.h"
-#include "system.h"
-#include <dirent.h>
-#include "tree.h"
-#include "rtl.h"
-#include "obstack.h"
-#include "toplev.h"
-#include "flags.h"
-#include "java-tree.h"
-#include "jcf.h"
-#include "lex.h"
-#include "parse.h"
-#include "zipfile.h"
-#include "convert.h"
-#include "buffer.h"
-#include "xref.h"
-#include "function.h"
-#include "except.h"
-#include "ggc.h"
-
-#ifndef DIR_SEPARATOR
-#define DIR_SEPARATOR '/'
-#endif
-
-/* Local function prototypes */
-static char *java_accstring_lookup PARAMS ((int));
-static void classitf_redefinition_error PARAMS ((const char *,tree, tree, tree));
-static void variable_redefinition_error PARAMS ((tree, tree, tree, int));
-static tree create_class PARAMS ((int, tree, tree, tree));
-static tree create_interface PARAMS ((int, tree, tree));
-static void end_class_declaration PARAMS ((int));
-static tree find_field PARAMS ((tree, tree));
-static tree lookup_field_wrapper PARAMS ((tree, tree));
-static int duplicate_declaration_error_p PARAMS ((tree, tree, tree));
-static void register_fields PARAMS ((int, tree, tree));
-static tree parser_qualified_classname PARAMS ((tree));
-static int parser_check_super PARAMS ((tree, tree, tree));
-static int parser_check_super_interface PARAMS ((tree, tree, tree));
-static void check_modifiers_consistency PARAMS ((int));
-static tree lookup_cl PARAMS ((tree));
-static tree lookup_java_method2 PARAMS ((tree, tree, int));
-static tree method_header PARAMS ((int, tree, tree, tree));
-static void fix_method_argument_names PARAMS ((tree ,tree));
-static tree method_declarator PARAMS ((tree, tree));
-static void parse_warning_context PARAMS ((tree cl, const char *msg, ...))
- ATTRIBUTE_PRINTF_2;
-static void issue_warning_error_from_context PARAMS ((tree, const char *msg, va_list))
- ATTRIBUTE_PRINTF (2, 0);
-static void parse_ctor_invocation_error PARAMS ((void));
-static tree parse_jdk1_1_error PARAMS ((const char *));
-static void complete_class_report_errors PARAMS ((jdep *));
-static int process_imports PARAMS ((void));
-static void read_import_dir PARAMS ((tree));
-static int find_in_imports_on_demand PARAMS ((tree, tree));
-static void find_in_imports PARAMS ((tree, tree));
-static void check_inner_class_access PARAMS ((tree, tree, tree));
-static int check_pkg_class_access PARAMS ((tree, tree, bool));
-static void register_package PARAMS ((tree));
-static tree resolve_package PARAMS ((tree, tree *, tree *));
-static tree resolve_class PARAMS ((tree, tree, tree, tree));
-static void declare_local_variables PARAMS ((int, tree, tree));
-static void dump_java_tree PARAMS ((enum tree_dump_index, tree));
-static void source_start_java_method PARAMS ((tree));
-static void source_end_java_method PARAMS ((void));
-static tree find_name_in_single_imports PARAMS ((tree));
-static void check_abstract_method_header PARAMS ((tree));
-static tree lookup_java_interface_method2 PARAMS ((tree, tree));
-static tree resolve_expression_name PARAMS ((tree, tree *));
-static tree maybe_create_class_interface_decl PARAMS ((tree, tree, tree, tree));
-static int check_class_interface_creation PARAMS ((int, int, tree,
- tree, tree, tree));
-static tree patch_method_invocation PARAMS ((tree, tree, tree, int,
- int *, tree *));
-static int breakdown_qualified PARAMS ((tree *, tree *, tree));
-static int in_same_package PARAMS ((tree, tree));
-static tree resolve_and_layout PARAMS ((tree, tree));
-static tree qualify_and_find PARAMS ((tree, tree, tree));
-static tree resolve_no_layout PARAMS ((tree, tree));
-static int invocation_mode PARAMS ((tree, int));
-static tree find_applicable_accessible_methods_list PARAMS ((int, tree,
- tree, tree));
-static void search_applicable_methods_list PARAMS ((int, tree, tree, tree,
- tree *, tree *));
-static tree find_most_specific_methods_list PARAMS ((tree));
-static int argument_types_convertible PARAMS ((tree, tree));
-static tree patch_invoke PARAMS ((tree, tree, tree));
-static int maybe_use_access_method PARAMS ((int, tree *, tree *));
-static tree lookup_method_invoke PARAMS ((int, tree, tree, tree, tree));
-static tree register_incomplete_type PARAMS ((int, tree, tree, tree));
-static tree check_inner_circular_reference PARAMS ((tree, tree));
-static tree check_circular_reference PARAMS ((tree));
-static tree obtain_incomplete_type PARAMS ((tree));
-static tree java_complete_lhs PARAMS ((tree));
-static tree java_complete_tree PARAMS ((tree));
-static tree maybe_generate_pre_expand_clinit PARAMS ((tree));
-static int analyze_clinit_body PARAMS ((tree, tree));
-static int maybe_yank_clinit PARAMS ((tree));
-static void start_complete_expand_method PARAMS ((tree));
-static void java_complete_expand_method PARAMS ((tree));
-static void java_expand_method_bodies PARAMS ((tree));
-static int unresolved_type_p PARAMS ((tree, tree *));
-static void create_jdep_list PARAMS ((struct parser_ctxt *));
-static tree build_expr_block PARAMS ((tree, tree));
-static tree enter_block PARAMS ((void));
-static tree exit_block PARAMS ((void));
-static tree lookup_name_in_blocks PARAMS ((tree));
-static void maybe_absorb_scoping_blocks PARAMS ((void));
-static tree build_method_invocation PARAMS ((tree, tree));
-static tree build_new_invocation PARAMS ((tree, tree));
-static tree build_assignment PARAMS ((int, int, tree, tree));
-static tree build_binop PARAMS ((enum tree_code, int, tree, tree));
-static tree patch_assignment PARAMS ((tree, tree));
-static tree patch_binop PARAMS ((tree, tree, tree));
-static tree build_unaryop PARAMS ((int, int, tree));
-static tree build_incdec PARAMS ((int, int, tree, int));
-static tree patch_unaryop PARAMS ((tree, tree));
-static tree build_cast PARAMS ((int, tree, tree));
-static tree build_null_of_type PARAMS ((tree));
-static tree patch_cast PARAMS ((tree, tree));
-static int valid_ref_assignconv_cast_p PARAMS ((tree, tree, int));
-static int valid_builtin_assignconv_identity_widening_p PARAMS ((tree, tree));
-static int valid_cast_to_p PARAMS ((tree, tree));
-static int valid_method_invocation_conversion_p PARAMS ((tree, tree));
-static tree try_builtin_assignconv PARAMS ((tree, tree, tree));
-static tree try_reference_assignconv PARAMS ((tree, tree));
-static tree build_unresolved_array_type PARAMS ((tree));
-static int build_type_name_from_array_name PARAMS ((tree, tree *));
-static tree build_array_from_name PARAMS ((tree, tree, tree, tree *));
-static tree build_array_ref PARAMS ((int, tree, tree));
-static tree patch_array_ref PARAMS ((tree));
-static tree make_qualified_name PARAMS ((tree, tree, int));
-static tree merge_qualified_name PARAMS ((tree, tree));
-static tree make_qualified_primary PARAMS ((tree, tree, int));
-static int resolve_qualified_expression_name PARAMS ((tree, tree *,
- tree *, tree *));
-static void qualify_ambiguous_name PARAMS ((tree));
-static tree resolve_field_access PARAMS ((tree, tree *, tree *));
-static tree build_newarray_node PARAMS ((tree, tree, int));
-static tree patch_newarray PARAMS ((tree));
-static tree resolve_type_during_patch PARAMS ((tree));
-static tree build_this PARAMS ((int));
-static tree build_wfl_wrap PARAMS ((tree, int));
-static tree build_return PARAMS ((int, tree));
-static tree patch_return PARAMS ((tree));
-static tree maybe_access_field PARAMS ((tree, tree, tree));
-static int complete_function_arguments PARAMS ((tree));
-static int check_for_static_method_reference PARAMS ((tree, tree, tree,
- tree, tree));
-static int not_accessible_p PARAMS ((tree, tree, tree, int));
-static void check_deprecation PARAMS ((tree, tree));
-static int class_in_current_package PARAMS ((tree));
-static tree build_if_else_statement PARAMS ((int, tree, tree, tree));
-static tree patch_if_else_statement PARAMS ((tree));
-static tree add_stmt_to_compound PARAMS ((tree, tree, tree));
-static tree add_stmt_to_block PARAMS ((tree, tree, tree));
-static tree patch_exit_expr PARAMS ((tree));
-static tree build_labeled_block PARAMS ((int, tree));
-static tree finish_labeled_statement PARAMS ((tree, tree));
-static tree build_bc_statement PARAMS ((int, int, tree));
-static tree patch_bc_statement PARAMS ((tree));
-static tree patch_loop_statement PARAMS ((tree));
-static tree build_new_loop PARAMS ((tree));
-static tree build_loop_body PARAMS ((int, tree, int));
-static tree finish_loop_body PARAMS ((int, tree, tree, int));
-static tree build_debugable_stmt PARAMS ((int, tree));
-static tree finish_for_loop PARAMS ((int, tree, tree, tree));
-static tree patch_switch_statement PARAMS ((tree));
-static tree string_constant_concatenation PARAMS ((tree, tree));
-static tree build_string_concatenation PARAMS ((tree, tree));
-static tree patch_string_cst PARAMS ((tree));
-static tree patch_string PARAMS ((tree));
-static tree encapsulate_with_try_catch PARAMS ((int, tree, tree, tree));
-static tree build_try_statement PARAMS ((int, tree, tree));
-static tree build_try_finally_statement PARAMS ((int, tree, tree));
-static tree patch_try_statement PARAMS ((tree));
-static tree patch_synchronized_statement PARAMS ((tree, tree));
-static tree patch_throw_statement PARAMS ((tree, tree));
-static void check_thrown_exceptions PARAMS ((int, tree));
-static int check_thrown_exceptions_do PARAMS ((tree));
-static void purge_unchecked_exceptions PARAMS ((tree));
-static bool ctors_unchecked_throws_clause_p PARAMS ((tree));
-static void check_throws_clauses PARAMS ((tree, tree, tree));
-static void finish_method_declaration PARAMS ((tree));
-static tree build_super_invocation PARAMS ((tree));
-static int verify_constructor_circularity PARAMS ((tree, tree));
-static char *constructor_circularity_msg PARAMS ((tree, tree));
-static tree build_this_super_qualified_invocation PARAMS ((int, tree, tree,
- int, int));
-static const char *get_printable_method_name PARAMS ((tree));
-static tree patch_conditional_expr PARAMS ((tree, tree, tree));
-static tree generate_finit PARAMS ((tree));
-static tree generate_instinit PARAMS ((tree));
-static tree build_instinit_invocation PARAMS ((tree));
-static void fix_constructors PARAMS ((tree));
-static tree build_alias_initializer_parameter_list PARAMS ((int, tree,
- tree, int *));
-static tree craft_constructor PARAMS ((tree, tree));
-static int verify_constructor_super PARAMS ((tree));
-static tree create_artificial_method PARAMS ((tree, int, tree, tree, tree));
-static void start_artificial_method_body PARAMS ((tree));
-static void end_artificial_method_body PARAMS ((tree));
-static int check_method_redefinition PARAMS ((tree, tree));
-static int check_method_types_complete PARAMS ((tree));
-static void java_check_regular_methods PARAMS ((tree));
-static void java_check_abstract_methods PARAMS ((tree));
-static void unreachable_stmt_error PARAMS ((tree));
-static tree find_expr_with_wfl PARAMS ((tree));
-static void missing_return_error PARAMS ((tree));
-static tree build_new_array_init PARAMS ((int, tree));
-static tree patch_new_array_init PARAMS ((tree, tree));
-static tree maybe_build_array_element_wfl PARAMS ((tree));
-static int array_constructor_check_entry PARAMS ((tree, tree));
-static const char *purify_type_name PARAMS ((const char *));
-static tree fold_constant_for_init PARAMS ((tree, tree));
-static tree strip_out_static_field_access_decl PARAMS ((tree));
-static jdeplist *reverse_jdep_list PARAMS ((struct parser_ctxt *));
-static void static_ref_err PARAMS ((tree, tree, tree));
-static void parser_add_interface PARAMS ((tree, tree, tree));
-static void add_superinterfaces PARAMS ((tree, tree));
-static tree jdep_resolve_class PARAMS ((jdep *));
-static int note_possible_classname PARAMS ((const char *, int));
-static void java_complete_expand_classes PARAMS ((void));
-static void java_complete_expand_class PARAMS ((tree));
-static void java_complete_expand_methods PARAMS ((tree));
-static tree cut_identifier_in_qualified PARAMS ((tree));
-static tree java_stabilize_reference PARAMS ((tree));
-static tree do_unary_numeric_promotion PARAMS ((tree));
-static char * operator_string PARAMS ((tree));
-static tree do_merge_string_cste PARAMS ((tree, const char *, int, int));
-static tree merge_string_cste PARAMS ((tree, tree, int));
-static tree java_refold PARAMS ((tree));
-static int java_decl_equiv PARAMS ((tree, tree));
-static int binop_compound_p PARAMS ((enum tree_code));
-static tree search_loop PARAMS ((tree));
-static int labeled_block_contains_loop_p PARAMS ((tree, tree));
-static int check_abstract_method_definitions PARAMS ((int, tree, tree));
-static void java_check_abstract_method_definitions PARAMS ((tree));
-static void java_debug_context_do PARAMS ((int));
-static void java_parser_context_push_initialized_field PARAMS ((void));
-static void java_parser_context_pop_initialized_field PARAMS ((void));
-static tree reorder_static_initialized PARAMS ((tree));
-static void java_parser_context_suspend PARAMS ((void));
-static void java_parser_context_resume PARAMS ((void));
-static int pop_current_osb PARAMS ((struct parser_ctxt *));
-
-/* JDK 1.1 work. FIXME */
-
-static tree maybe_make_nested_class_name PARAMS ((tree));
-static void make_nested_class_name PARAMS ((tree));
-static void set_nested_class_simple_name_value PARAMS ((tree, int));
-static void link_nested_class_to_enclosing PARAMS ((void));
-static tree resolve_inner_class PARAMS ((struct hash_table *, tree, tree *,
- tree *, tree));
-static tree find_as_inner_class PARAMS ((tree, tree, tree));
-static tree find_as_inner_class_do PARAMS ((tree, tree));
-static int check_inner_class_redefinition PARAMS ((tree, tree));
-
-static tree build_thisn_assign PARAMS ((void));
-static tree build_current_thisn PARAMS ((tree));
-static tree build_access_to_thisn PARAMS ((tree, tree, int));
-static tree maybe_build_thisn_access_method PARAMS ((tree));
-
-static tree build_outer_field_access PARAMS ((tree, tree));
-static tree build_outer_field_access_methods PARAMS ((tree));
-static tree build_outer_field_access_expr PARAMS ((int, tree, tree,
- tree, tree));
-static tree build_outer_method_access_method PARAMS ((tree));
-static tree build_new_access_id PARAMS ((void));
-static tree build_outer_field_access_method PARAMS ((tree, tree, tree,
- tree, tree));
-
-static int outer_field_access_p PARAMS ((tree, tree));
-static int outer_field_expanded_access_p PARAMS ((tree, tree *,
- tree *, tree *));
-static tree outer_field_access_fix PARAMS ((tree, tree, tree));
-static tree build_incomplete_class_ref PARAMS ((int, tree));
-static tree patch_incomplete_class_ref PARAMS ((tree));
-static tree create_anonymous_class PARAMS ((int, tree));
-static void patch_anonymous_class PARAMS ((tree, tree, tree));
-static void add_inner_class_fields PARAMS ((tree, tree));
-
-static tree build_dot_class_method PARAMS ((tree));
-static tree build_dot_class_method_invocation PARAMS ((tree));
-static void create_new_parser_context PARAMS ((int));
-static void mark_parser_ctxt PARAMS ((void *));
-static tree maybe_build_class_init_for_field PARAMS ((tree, tree));
-
-static bool attach_init_test_initialization_flags PARAMS ((struct hash_entry *,
- PTR));
-static bool emit_test_initialization PARAMS ((struct hash_entry *, PTR));
-
-/* Number of error found so far. */
-int java_error_count;
-/* Number of warning found so far. */
-int java_warning_count;
-/* Tell when not to fold, when doing xrefs */
-int do_not_fold;
-/* Cyclic inheritance report, as it can be set by layout_class */
-const char *cyclic_inheritance_report;
-
-/* The current parser context */
-struct parser_ctxt *ctxp;
-
-/* List of things that were analyzed for which code will be generated */
-struct parser_ctxt *ctxp_for_generation = NULL;
-
-/* binop_lookup maps token to tree_code. It is used where binary
- operations are involved and required by the parser. RDIV_EXPR
- covers both integral/floating point division. The code is changed
- once the type of both operator is worked out. */
-
-static const enum tree_code binop_lookup[19] =
- {
- PLUS_EXPR, MINUS_EXPR, MULT_EXPR, RDIV_EXPR, TRUNC_MOD_EXPR,
- LSHIFT_EXPR, RSHIFT_EXPR, URSHIFT_EXPR,
- BIT_AND_EXPR, BIT_XOR_EXPR, BIT_IOR_EXPR,
- TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR,
- EQ_EXPR, NE_EXPR, GT_EXPR, GE_EXPR, LT_EXPR, LE_EXPR,
- };
-#define BINOP_LOOKUP(VALUE) \
- binop_lookup [((VALUE) - PLUS_TK) % ARRAY_SIZE (binop_lookup)]
-
-/* This is the end index for binary operators that can also be used
- in compound assignements. */
-#define BINOP_COMPOUND_CANDIDATES 11
-
-/* The "$L" identifier we use to create labels. */
-static tree label_id = NULL_TREE;
-
-/* The "StringBuffer" identifier used for the String `+' operator. */
-static tree wfl_string_buffer = NULL_TREE;
-
-/* The "append" identifier used for String `+' operator. */
-static tree wfl_append = NULL_TREE;
-
-/* The "toString" identifier used for String `+' operator. */
-static tree wfl_to_string = NULL_TREE;
-
-/* The "java.lang" import qualified name. */
-static tree java_lang_id = NULL_TREE;
-
-/* The generated `inst$' identifier used for generated enclosing
- instance/field access functions. */
-static tree inst_id = NULL_TREE;
-
-/* The "java.lang.Cloneable" qualified name. */
-static tree java_lang_cloneable = NULL_TREE;
-
-/* The "java.io.Serializable" qualified name. */
-static tree java_io_serializable = NULL_TREE;
-
-/* Context and flag for static blocks */
-static tree current_static_block = NULL_TREE;
-
-/* The generated `write_parm_value$' identifier. */
-static tree wpv_id;
-
-/* The list of all packages we've seen so far */
-static tree package_list = NULL_TREE;
-
-/* Hold THIS for the scope of the current method decl. */
-static tree current_this;
-
-/* Hold a list of catch clauses list. The first element of this list is
- the list of the catch clauses of the currently analysed try block. */
-static tree currently_caught_type_list;
-
-/* This holds a linked list of all the case labels for the current
- switch statement. It is only used when checking to see if there
- are duplicate labels. FIXME: probably this should just be attached
- to the switch itself; then it could be referenced via
- `ctxp->current_loop'. */
-static tree case_label_list;
-
-static tree src_parse_roots[1];
-
-/* All classes seen from source code */
-#define gclass_list src_parse_roots[0]
-
-/* Check modifiers. If one doesn't fit, retrieve it in its declaration
- line and point it out. */
-/* Should point out the one that don't fit. ASCII/unicode, going
- backward. FIXME */
-
-#define check_modifiers(__message, __value, __mask) do { \
- if ((__value) & ~(__mask)) \
- { \
- int i, remainder = (__value) & ~(__mask); \
- for (i = 0; i <= 10; i++) \
- if ((1 << i) & remainder) \
- parse_error_context (ctxp->modifier_ctx [i], (__message), \
- java_accstring_lookup (1 << i)); \
- } \
-} while (0)
-
-%}
-
-%union {
- tree node;
- int sub_token;
- struct {
- int token;
- int location;
- } operator;
- int value;
-}
-
-%{
-#include "lex.c"
-%}
-
-%pure_parser
-
-/* Things defined here have to match the order of what's in the
- binop_lookup table. */
-
-%token PLUS_TK MINUS_TK MULT_TK DIV_TK REM_TK
-%token LS_TK SRS_TK ZRS_TK
-%token AND_TK XOR_TK OR_TK
-%token BOOL_AND_TK BOOL_OR_TK
-%token EQ_TK NEQ_TK GT_TK GTE_TK LT_TK LTE_TK
-
-/* This maps to the same binop_lookup entry than the token above */
-
-%token PLUS_ASSIGN_TK MINUS_ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK
-%token REM_ASSIGN_TK
-%token LS_ASSIGN_TK SRS_ASSIGN_TK ZRS_ASSIGN_TK
-%token AND_ASSIGN_TK XOR_ASSIGN_TK OR_ASSIGN_TK
-
-
-/* Modifier TOKEN have to be kept in this order. Don't scramble it */
-
-%token PUBLIC_TK PRIVATE_TK PROTECTED_TK
-%token STATIC_TK FINAL_TK SYNCHRONIZED_TK
-%token VOLATILE_TK TRANSIENT_TK NATIVE_TK
-%token PAD_TK ABSTRACT_TK STRICT_TK
-%token MODIFIER_TK
-
-/* Keep those two in order, too */
-%token DECR_TK INCR_TK
-
-/* From now one, things can be in any order */
-
-%token DEFAULT_TK IF_TK THROW_TK
-%token BOOLEAN_TK DO_TK IMPLEMENTS_TK
-%token THROWS_TK BREAK_TK IMPORT_TK
-%token ELSE_TK INSTANCEOF_TK RETURN_TK
-%token VOID_TK CATCH_TK INTERFACE_TK
-%token CASE_TK EXTENDS_TK FINALLY_TK
-%token SUPER_TK WHILE_TK CLASS_TK
-%token SWITCH_TK CONST_TK TRY_TK
-%token FOR_TK NEW_TK CONTINUE_TK
-%token GOTO_TK PACKAGE_TK THIS_TK
-
-%token BYTE_TK SHORT_TK INT_TK LONG_TK
-%token CHAR_TK INTEGRAL_TK
-
-%token FLOAT_TK DOUBLE_TK FP_TK
-
-%token ID_TK
-
-%token REL_QM_TK REL_CL_TK NOT_TK NEG_TK
-
-%token ASSIGN_ANY_TK ASSIGN_TK
-%token OP_TK CP_TK OCB_TK CCB_TK OSB_TK CSB_TK SC_TK C_TK DOT_TK
-
-%token STRING_LIT_TK CHAR_LIT_TK INT_LIT_TK FP_LIT_TK
-%token TRUE_TK FALSE_TK BOOL_LIT_TK NULL_TK
-
-%type <value> modifiers MODIFIER_TK final synchronized
-
-%type <node> super ID_TK identifier
-%type <node> name simple_name qualified_name
-%type <node> type_declaration compilation_unit
- field_declaration method_declaration extends_interfaces
- interfaces interface_type_list
- import_declarations package_declaration
- type_declarations interface_body
- interface_member_declaration constant_declaration
- interface_member_declarations interface_type
- abstract_method_declaration
-%type <node> class_body_declaration class_member_declaration
- static_initializer constructor_declaration block
-%type <node> class_body_declarations constructor_header
-%type <node> class_or_interface_type class_type class_type_list
- constructor_declarator explicit_constructor_invocation
-%type <node> dim_expr dim_exprs this_or_super throws
-
-%type <node> variable_declarator_id variable_declarator
- variable_declarators variable_initializer
- variable_initializers constructor_body
- array_initializer
-
-%type <node> class_body block_end constructor_block_end
-%type <node> statement statement_without_trailing_substatement
- labeled_statement if_then_statement label_decl
- if_then_else_statement while_statement for_statement
- statement_nsi labeled_statement_nsi do_statement
- if_then_else_statement_nsi while_statement_nsi
- for_statement_nsi statement_expression_list for_init
- for_update statement_expression expression_statement
- primary_no_new_array expression primary
- array_creation_expression array_type
- class_instance_creation_expression field_access
- method_invocation array_access something_dot_new
- argument_list postfix_expression while_expression
- post_increment_expression post_decrement_expression
- unary_expression_not_plus_minus unary_expression
- pre_increment_expression pre_decrement_expression
- cast_expression
- multiplicative_expression additive_expression
- shift_expression relational_expression
- equality_expression and_expression
- exclusive_or_expression inclusive_or_expression
- conditional_and_expression conditional_or_expression
- conditional_expression assignment_expression
- left_hand_side assignment for_header for_begin
- constant_expression do_statement_begin empty_statement
- switch_statement synchronized_statement throw_statement
- try_statement switch_expression switch_block
- catches catch_clause catch_clause_parameter finally
- anonymous_class_creation trap_overflow_corner_case
-%type <node> return_statement break_statement continue_statement
-
-%type <operator> ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK
-%type <operator> REM_ASSIGN_TK PLUS_ASSIGN_TK MINUS_ASSIGN_TK
-%type <operator> LS_ASSIGN_TK SRS_ASSIGN_TK ZRS_ASSIGN_TK
-%type <operator> AND_ASSIGN_TK XOR_ASSIGN_TK OR_ASSIGN_TK
-%type <operator> ASSIGN_ANY_TK assignment_operator
-%token <operator> EQ_TK GTE_TK ZRS_TK SRS_TK GT_TK LTE_TK LS_TK
-%token <operator> BOOL_AND_TK AND_TK BOOL_OR_TK OR_TK INCR_TK PLUS_TK
-%token <operator> DECR_TK MINUS_TK MULT_TK DIV_TK XOR_TK REM_TK NEQ_TK
-%token <operator> NEG_TK REL_QM_TK REL_CL_TK NOT_TK LT_TK OCB_TK CCB_TK
-%token <operator> OP_TK OSB_TK DOT_TK THROW_TK INSTANCEOF_TK
-%type <operator> THIS_TK SUPER_TK RETURN_TK BREAK_TK CONTINUE_TK
-%type <operator> CASE_TK DEFAULT_TK TRY_TK CATCH_TK SYNCHRONIZED_TK
-%type <operator> NEW_TK
-
-%type <node> method_body
-
-%type <node> literal INT_LIT_TK FP_LIT_TK BOOL_LIT_TK CHAR_LIT_TK
- STRING_LIT_TK NULL_TK VOID_TK
-
-%type <node> IF_TK WHILE_TK FOR_TK
-
-%type <node> formal_parameter_list formal_parameter
- method_declarator method_header
-
-%type <node> primitive_type reference_type type
- BOOLEAN_TK INTEGRAL_TK FP_TK
-
-/* Added or modified JDK 1.1 rule types */
-%type <node> type_literals
-
-%%
-/* 19.2 Production from 2.3: The Syntactic Grammar */
-goal:
- {
- /* Register static variables with the garbage
- collector. */
- ggc_add_tree_root (&label_id, 1);
- ggc_add_tree_root (&wfl_string_buffer, 1);
- ggc_add_tree_root (&wfl_append, 1);
- ggc_add_tree_root (&wfl_to_string, 1);
- ggc_add_tree_root (&java_lang_id, 1);
- ggc_add_tree_root (&inst_id, 1);
- ggc_add_tree_root (&java_lang_cloneable, 1);
- ggc_add_tree_root (&java_io_serializable, 1);
- ggc_add_tree_root (¤t_static_block, 1);
- ggc_add_tree_root (&wpv_id, 1);
- ggc_add_tree_root (&package_list, 1);
- ggc_add_tree_root (¤t_this, 1);
- ggc_add_tree_root (¤tly_caught_type_list, 1);
- ggc_add_tree_root (&case_label_list, 1);
- ggc_add_root (&ctxp, 1,
- sizeof (struct parser_ctxt *),
- mark_parser_ctxt);
- ggc_add_root (&ctxp_for_generation, 1,
- sizeof (struct parser_ctxt *),
- mark_parser_ctxt);
- }
- compilation_unit
- {}
-;
-
-/* 19.3 Productions from 3: Lexical structure */
-literal:
- INT_LIT_TK
-| FP_LIT_TK
-| BOOL_LIT_TK
-| CHAR_LIT_TK
-| STRING_LIT_TK
-| NULL_TK
-;
-
-/* 19.4 Productions from 4: Types, Values and Variables */
-type:
- primitive_type
-| reference_type
-;
-
-primitive_type:
- INTEGRAL_TK
-| FP_TK
-| BOOLEAN_TK
-;
-
-reference_type:
- class_or_interface_type
-| array_type
-;
-
-class_or_interface_type:
- name
-;
-
-class_type:
- class_or_interface_type /* Default rule */
-;
-
-interface_type:
- class_or_interface_type
-;
-
-array_type:
- primitive_type dims
- {
- int osb = pop_current_osb (ctxp);
- tree t = build_java_array_type (($1), -1);
- while (--osb)
- t = build_unresolved_array_type (t);
- $$ = t;
- }
-| name dims
- {
- int osb = pop_current_osb (ctxp);
- tree t = $1;
- while (osb--)
- t = build_unresolved_array_type (t);
- $$ = t;
- }
-;
-
-/* 19.5 Productions from 6: Names */
-name:
- simple_name /* Default rule */
-| qualified_name /* Default rule */
-;
-
-simple_name:
- identifier /* Default rule */
-;
-
-qualified_name:
- name DOT_TK identifier
- { $$ = make_qualified_name ($1, $3, $2.location); }
-;
-
-identifier:
- ID_TK
-;
-
-/* 19.6: Production from 7: Packages */
-compilation_unit:
- {$$ = NULL;}
-| package_declaration
-| import_declarations
-| type_declarations
-| package_declaration import_declarations
-| package_declaration type_declarations
-| import_declarations type_declarations
-| package_declaration import_declarations type_declarations
-;
-
-import_declarations:
- import_declaration
- {
- $$ = NULL;
- }
-| import_declarations import_declaration
- {
- $$ = NULL;
- }
-;
-
-type_declarations:
- type_declaration
-| type_declarations type_declaration
-;
-
-package_declaration:
- PACKAGE_TK name SC_TK
- {
- ctxp->package = EXPR_WFL_NODE ($2);
- register_package (ctxp->package);
- }
-| PACKAGE_TK error
- {yyerror ("Missing name"); RECOVER;}
-| PACKAGE_TK name error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-import_declaration:
- single_type_import_declaration
-| type_import_on_demand_declaration
-;
-
-single_type_import_declaration:
- IMPORT_TK name SC_TK
- {
- tree name = EXPR_WFL_NODE ($2), last_name;
- int i = IDENTIFIER_LENGTH (name)-1;
- const char *last = &IDENTIFIER_POINTER (name)[i];
- while (last != IDENTIFIER_POINTER (name))
- {
- if (last [0] == '.')
- break;
- last--;
- }
- last_name = get_identifier (++last);
- if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (last_name))
- {
- tree err = find_name_in_single_imports (last_name);
- if (err && err != name)
- parse_error_context
- ($2, "Ambiguous class: `%s' and `%s'",
- IDENTIFIER_POINTER (name),
- IDENTIFIER_POINTER (err));
- else
- REGISTER_IMPORT ($2, last_name);
- }
- else
- REGISTER_IMPORT ($2, last_name);
- }
-| IMPORT_TK error
- {yyerror ("Missing name"); RECOVER;}
-| IMPORT_TK name error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-type_import_on_demand_declaration:
- IMPORT_TK name DOT_TK MULT_TK SC_TK
- {
- tree name = EXPR_WFL_NODE ($2);
- tree it;
- /* Search for duplicates. */
- for (it = ctxp->import_demand_list; it; it = TREE_CHAIN (it))
- if (EXPR_WFL_NODE (TREE_PURPOSE (it)) == name)
- break;
- /* Don't import the same thing more than once, just ignore
- duplicates (7.5.2) */
- if (! it)
- {
- read_import_dir ($2);
- ctxp->import_demand_list =
- chainon (ctxp->import_demand_list,
- build_tree_list ($2, NULL_TREE));
- }
- }
-| IMPORT_TK name DOT_TK error
- {yyerror ("'*' expected"); RECOVER;}
-| IMPORT_TK name DOT_TK MULT_TK error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-type_declaration:
- class_declaration
- { end_class_declaration (0); }
-| interface_declaration
- { end_class_declaration (0); }
-| empty_statement
-| error
- {
- YYERROR_NOW;
- yyerror ("Class or interface declaration expected");
- }
-;
-
-/* 19.7 Shortened from the original:
- modifiers: modifier | modifiers modifier
- modifier: any of public... */
-modifiers:
- MODIFIER_TK
- {
- $$ = (1 << $1);
- }
-| modifiers MODIFIER_TK
- {
- int acc = (1 << $2);
- if ($$ & acc)
- parse_error_context
- (ctxp->modifier_ctx [$2], "Modifier `%s' declared twice",
- java_accstring_lookup (acc));
- else
- {
- $$ |= acc;
- }
- }
-;
-
-/* 19.8.1 Production from $8.1: Class Declaration */
-class_declaration:
- modifiers CLASS_TK identifier super interfaces
- { create_class ($1, $3, $4, $5); }
- class_body
- {;}
-| CLASS_TK identifier super interfaces
- { create_class (0, $2, $3, $4); }
- class_body
- {;}
-| modifiers CLASS_TK error
- {yyerror ("Missing class name"); RECOVER;}
-| CLASS_TK error
- {yyerror ("Missing class name"); RECOVER;}
-| CLASS_TK identifier error
- {
- if (!ctxp->class_err) yyerror ("'{' expected");
- DRECOVER(class1);
- }
-| modifiers CLASS_TK identifier error
- {if (!ctxp->class_err) yyerror ("'{' expected"); RECOVER;}
-;
-
-super:
- { $$ = NULL; }
-| EXTENDS_TK class_type
- { $$ = $2; }
-| EXTENDS_TK class_type error
- {yyerror ("'{' expected"); ctxp->class_err=1;}
-| EXTENDS_TK error
- {yyerror ("Missing super class name"); ctxp->class_err=1;}
-;
-
-interfaces:
- { $$ = NULL_TREE; }
-| IMPLEMENTS_TK interface_type_list
- { $$ = $2; }
-| IMPLEMENTS_TK error
- {
- ctxp->class_err=1;
- yyerror ("Missing interface name");
- }
-;
-
-interface_type_list:
- interface_type
- {
- ctxp->interface_number = 1;
- $$ = build_tree_list ($1, NULL_TREE);
- }
-| interface_type_list C_TK interface_type
- {
- ctxp->interface_number++;
- $$ = chainon ($1, build_tree_list ($3, NULL_TREE));
- }
-| interface_type_list C_TK error
- {yyerror ("Missing interface name"); RECOVER;}
-;
-
-class_body:
- OCB_TK CCB_TK
- {
- /* Store the location of the `}' when doing xrefs */
- if (flag_emit_xref)
- DECL_END_SOURCE_LINE (GET_CPC ()) =
- EXPR_WFL_ADD_COL ($2.location, 1);
- $$ = GET_CPC ();
- }
-| OCB_TK class_body_declarations CCB_TK
- {
- /* Store the location of the `}' when doing xrefs */
- if (flag_emit_xref)
- DECL_END_SOURCE_LINE (GET_CPC ()) =
- EXPR_WFL_ADD_COL ($3.location, 1);
- $$ = GET_CPC ();
- }
-;
-
-class_body_declarations:
- class_body_declaration
-| class_body_declarations class_body_declaration
-;
-
-class_body_declaration:
- class_member_declaration
-| static_initializer
-| constructor_declaration
-| block /* Added, JDK1.1, instance initializer */
- {
- if ($1 != empty_stmt_node)
- {
- TREE_CHAIN ($1) = CPC_INSTANCE_INITIALIZER_STMT (ctxp);
- SET_CPC_INSTANCE_INITIALIZER_STMT (ctxp, $1);
- }
- }
-;
-
-class_member_declaration:
- field_declaration
-| method_declaration
-| class_declaration /* Added, JDK1.1 inner classes */
- { end_class_declaration (1); }
-| interface_declaration /* Added, JDK1.1 inner interfaces */
- { end_class_declaration (1); }
-| empty_statement
-;
-
-/* 19.8.2 Productions from 8.3: Field Declarations */
-field_declaration:
- type variable_declarators SC_TK
- { register_fields (0, $1, $2); }
-| modifiers type variable_declarators SC_TK
- {
- check_modifiers
- ("Illegal modifier `%s' for field declaration",
- $1, FIELD_MODIFIERS);
- check_modifiers_consistency ($1);
- register_fields ($1, $2, $3);
- }
-;
-
-variable_declarators:
- /* Should we use build_decl_list () instead ? FIXME */
- variable_declarator /* Default rule */
-| variable_declarators C_TK variable_declarator
- { $$ = chainon ($1, $3); }
-| variable_declarators C_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-variable_declarator:
- variable_declarator_id
- { $$ = build_tree_list ($1, NULL_TREE); }
-| variable_declarator_id ASSIGN_TK variable_initializer
- {
- if (java_error_count)
- $3 = NULL_TREE;
- $$ = build_tree_list
- ($1, build_assignment ($2.token, $2.location, $1, $3));
- }
-| variable_declarator_id ASSIGN_TK error
- {
- yyerror ("Missing variable initializer");
- $$ = build_tree_list ($1, NULL_TREE);
- RECOVER;
- }
-| variable_declarator_id ASSIGN_TK variable_initializer error
- {
- yyerror ("';' expected");
- $$ = build_tree_list ($1, NULL_TREE);
- RECOVER;
- }
-;
-
-variable_declarator_id:
- identifier
-| variable_declarator_id OSB_TK CSB_TK
- { $$ = build_unresolved_array_type ($1); }
-| identifier error
- {yyerror ("Invalid declaration"); DRECOVER(vdi);}
-| variable_declarator_id OSB_TK error
- {
- tree node = java_lval.node;
- if (node && (TREE_CODE (node) == INTEGER_CST
- || TREE_CODE (node) == EXPR_WITH_FILE_LOCATION))
- yyerror ("Can't specify array dimension in a declaration");
- else
- yyerror ("']' expected");
- DRECOVER(vdi);
- }
-| variable_declarator_id CSB_TK error
- {yyerror ("Unbalanced ']'"); DRECOVER(vdi);}
-;
-
-variable_initializer:
- expression
-| array_initializer
-;
-
-/* 19.8.3 Productions from 8.4: Method Declarations */
-method_declaration:
- method_header
- {
- current_function_decl = $1;
- if (current_function_decl
- && TREE_CODE (current_function_decl) == FUNCTION_DECL)
- source_start_java_method (current_function_decl);
- else
- current_function_decl = NULL_TREE;
- }
- method_body
- { finish_method_declaration ($3); }
-| method_header error
- {YYNOT_TWICE yyerror ("'{' expected"); RECOVER;}
-;
-
-method_header:
- type method_declarator throws
- { $$ = method_header (0, $1, $2, $3); }
-| VOID_TK method_declarator throws
- { $$ = method_header (0, void_type_node, $2, $3); }
-| modifiers type method_declarator throws
- { $$ = method_header ($1, $2, $3, $4); }
-| modifiers VOID_TK method_declarator throws
- { $$ = method_header ($1, void_type_node, $3, $4); }
-| type error
- {
- yyerror ("Invalid method declaration, method name required");
- RECOVER;
- }
-| modifiers type error
- {RECOVER;}
-| VOID_TK error
- {yyerror ("Identifier expected"); RECOVER;}
-| modifiers VOID_TK error
- {yyerror ("Identifier expected"); RECOVER;}
-| modifiers error
- {
- yyerror ("Invalid method declaration, return type required");
- RECOVER;
- }
-;
-
-method_declarator:
- identifier OP_TK CP_TK
- {
- ctxp->formal_parameter_number = 0;
- $$ = method_declarator ($1, NULL_TREE);
- }
-| identifier OP_TK formal_parameter_list CP_TK
- { $$ = method_declarator ($1, $3); }
-| method_declarator OSB_TK CSB_TK
- {
- EXPR_WFL_LINECOL (wfl_operator) = $2.location;
- TREE_PURPOSE ($1) =
- build_unresolved_array_type (TREE_PURPOSE ($1));
- parse_warning_context
- (wfl_operator,
- "Discouraged form of returned type specification");
- }
-| identifier OP_TK error
- {yyerror ("')' expected"); DRECOVER(method_declarator);}
-| method_declarator OSB_TK error
- {yyerror ("']' expected"); RECOVER;}
-;
-
-formal_parameter_list:
- formal_parameter
- {
- ctxp->formal_parameter_number = 1;
- }
-| formal_parameter_list C_TK formal_parameter
- {
- ctxp->formal_parameter_number += 1;
- $$ = chainon ($1, $3);
- }
-| formal_parameter_list C_TK error
- { yyerror ("Missing formal parameter term"); RECOVER; }
-;
-
-formal_parameter:
- type variable_declarator_id
- {
- $$ = build_tree_list ($2, $1);
- }
-| final type variable_declarator_id /* Added, JDK1.1 final parms */
- {
- $$ = build_tree_list ($3, $2);
- ARG_FINAL_P ($$) = 1;
- }
-| type error
- {
- yyerror ("Missing identifier"); RECOVER;
- $$ = NULL_TREE;
- }
-| final type error
- {
- yyerror ("Missing identifier"); RECOVER;
- $$ = NULL_TREE;
- }
-;
-
-final:
- modifiers
- {
- check_modifiers ("Illegal modifier `%s'. Only `final' was expected here",
- $1, ACC_FINAL);
- if ($1 != ACC_FINAL)
- MODIFIER_WFL (FINAL_TK) = build_wfl_node (NULL_TREE);
- }
-;
-
-throws:
- { $$ = NULL_TREE; }
-| THROWS_TK class_type_list
- { $$ = $2; }
-| THROWS_TK error
- {yyerror ("Missing class type term"); RECOVER;}
-;
-
-class_type_list:
- class_type
- { $$ = build_tree_list ($1, $1); }
-| class_type_list C_TK class_type
- { $$ = tree_cons ($3, $3, $1); }
-| class_type_list C_TK error
- {yyerror ("Missing class type term"); RECOVER;}
-;
-
-method_body:
- block
-| SC_TK { $$ = NULL_TREE; }
-;
-
-/* 19.8.4 Productions from 8.5: Static Initializers */
-static_initializer:
- static block
- {
- TREE_CHAIN ($2) = CPC_STATIC_INITIALIZER_STMT (ctxp);
- SET_CPC_STATIC_INITIALIZER_STMT (ctxp, $2);
- current_static_block = NULL_TREE;
- }
-;
-
-static: /* Test lval.sub_token here */
- modifiers
- {
- check_modifiers ("Illegal modifier `%s' for static initializer", $1, ACC_STATIC);
- /* Can't have a static initializer in an innerclass */
- if ($1 | ACC_STATIC &&
- GET_CPC_LIST () && !TOPLEVEL_CLASS_DECL_P (GET_CPC ()))
- parse_error_context
- (MODIFIER_WFL (STATIC_TK),
- "Can't define static initializer in class `%s'. Static initializer can only be defined in top-level classes",
- IDENTIFIER_POINTER (DECL_NAME (GET_CPC ())));
- SOURCE_FRONTEND_DEBUG (("Modifiers: %d", $1));
- }
-;
-
-/* 19.8.5 Productions from 8.6: Constructor Declarations */
-constructor_declaration:
- constructor_header
- {
- current_function_decl = $1;
- source_start_java_method (current_function_decl);
- }
- constructor_body
- { finish_method_declaration ($3); }
-;
-
-constructor_header:
- constructor_declarator throws
- { $$ = method_header (0, NULL_TREE, $1, $2); }
-| modifiers constructor_declarator throws
- { $$ = method_header ($1, NULL_TREE, $2, $3); }
-;
-
-constructor_declarator:
- simple_name OP_TK CP_TK
- {
- ctxp->formal_parameter_number = 0;
- $$ = method_declarator ($1, NULL_TREE);
- }
-| simple_name OP_TK formal_parameter_list CP_TK
- { $$ = method_declarator ($1, $3); }
-;
-
-constructor_body:
- /* Unlike regular method, we always need a complete (empty)
- body so we can safely perform all the required code
- addition (super invocation and field initialization) */
- block_begin constructor_block_end
- {
- BLOCK_EXPR_BODY ($2) = empty_stmt_node;
- $$ = $2;
- }
-| block_begin explicit_constructor_invocation constructor_block_end
- { $$ = $3; }
-| block_begin block_statements constructor_block_end
- { $$ = $3; }
-| block_begin explicit_constructor_invocation block_statements constructor_block_end
- { $$ = $4; }
-;
-
-constructor_block_end:
- block_end
-;
-
-/* Error recovery for that rule moved down expression_statement: rule. */
-explicit_constructor_invocation:
- this_or_super OP_TK CP_TK SC_TK
- {
- $$ = build_method_invocation ($1, NULL_TREE);
- $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$);
- $$ = java_method_add_stmt (current_function_decl, $$);
- }
-| this_or_super OP_TK argument_list CP_TK SC_TK
- {
- $$ = build_method_invocation ($1, $3);
- $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$);
- $$ = java_method_add_stmt (current_function_decl, $$);
- }
- /* Added, JDK1.1 inner classes. Modified because the rule
- 'primary' couldn't work. */
-| name DOT_TK SUPER_TK OP_TK argument_list CP_TK SC_TK
- {$$ = parse_jdk1_1_error ("explicit constructor invocation"); }
-| name DOT_TK SUPER_TK OP_TK CP_TK SC_TK
- {$$ = parse_jdk1_1_error ("explicit constructor invocation"); }
-;
-
-this_or_super: /* Added, simplifies error diagnostics */
- THIS_TK
- {
- tree wfl = build_wfl_node (this_identifier_node);
- EXPR_WFL_LINECOL (wfl) = $1.location;
- $$ = wfl;
- }
-| SUPER_TK
- {
- tree wfl = build_wfl_node (super_identifier_node);
- EXPR_WFL_LINECOL (wfl) = $1.location;
- $$ = wfl;
- }
-;
-
-/* 19.9 Productions from 9: Interfaces */
-/* 19.9.1 Productions from 9.1: Interfaces Declarations */
-interface_declaration:
- INTERFACE_TK identifier
- { create_interface (0, $2, NULL_TREE); }
- interface_body
- { ; }
-| modifiers INTERFACE_TK identifier
- { create_interface ($1, $3, NULL_TREE); }
- interface_body
- { ; }
-| INTERFACE_TK identifier extends_interfaces
- { create_interface (0, $2, $3); }
- interface_body
- { ; }
-| modifiers INTERFACE_TK identifier extends_interfaces
- { create_interface ($1, $3, $4); }
- interface_body
- { ; }
-| INTERFACE_TK identifier error
- {yyerror ("'{' expected"); RECOVER;}
-| modifiers INTERFACE_TK identifier error
- {yyerror ("'{' expected"); RECOVER;}
-;
-
-extends_interfaces:
- EXTENDS_TK interface_type
- {
- ctxp->interface_number = 1;
- $$ = build_tree_list ($2, NULL_TREE);
- }
-| extends_interfaces C_TK interface_type
- {
- ctxp->interface_number++;
- $$ = chainon ($1, build_tree_list ($3, NULL_TREE));
- }
-| EXTENDS_TK error
- {yyerror ("Invalid interface type"); RECOVER;}
-| extends_interfaces C_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-interface_body:
- OCB_TK CCB_TK
- { $$ = NULL_TREE; }
-| OCB_TK interface_member_declarations CCB_TK
- { $$ = NULL_TREE; }
-;
-
-interface_member_declarations:
- interface_member_declaration
-| interface_member_declarations interface_member_declaration
-;
-
-interface_member_declaration:
- constant_declaration
-| abstract_method_declaration
-| class_declaration /* Added, JDK1.1 inner classes */
- { end_class_declaration (1); }
-| interface_declaration /* Added, JDK1.1 inner interfaces */
- { end_class_declaration (1); }
-;
-
-constant_declaration:
- field_declaration
-;
-
-abstract_method_declaration:
- method_header SC_TK
- {
- check_abstract_method_header ($1);
- current_function_decl = NULL_TREE; /* FIXME ? */
- }
-| method_header error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-/* 19.10 Productions from 10: Arrays */
-array_initializer:
- OCB_TK CCB_TK
- { $$ = build_new_array_init ($1.location, NULL_TREE); }
-| OCB_TK C_TK CCB_TK
- { $$ = build_new_array_init ($1.location, NULL_TREE); }
-| OCB_TK variable_initializers CCB_TK
- { $$ = build_new_array_init ($1.location, $2); }
-| OCB_TK variable_initializers C_TK CCB_TK
- { $$ = build_new_array_init ($1.location, $2); }
-;
-
-variable_initializers:
- variable_initializer
- {
- $$ = tree_cons (maybe_build_array_element_wfl ($1),
- $1, NULL_TREE);
- }
-| variable_initializers C_TK variable_initializer
- {
- $$ = tree_cons (maybe_build_array_element_wfl ($3), $3, $1);
- }
-| variable_initializers C_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-/* 19.11 Production from 14: Blocks and Statements */
-block:
- OCB_TK CCB_TK
- {
- /* Store the location of the `}' when doing xrefs */
- if (current_function_decl && flag_emit_xref)
- DECL_END_SOURCE_LINE (current_function_decl) =
- EXPR_WFL_ADD_COL ($2.location, 1);
- $$ = empty_stmt_node;
- }
-| block_begin block_statements block_end
- { $$ = $3; }
-;
-
-block_begin:
- OCB_TK
- { enter_block (); }
-;
-
-block_end:
- CCB_TK
- {
- maybe_absorb_scoping_blocks ();
- /* Store the location of the `}' when doing xrefs */
- if (current_function_decl && flag_emit_xref)
- DECL_END_SOURCE_LINE (current_function_decl) =
- EXPR_WFL_ADD_COL ($1.location, 1);
- $$ = exit_block ();
- if (!BLOCK_SUBBLOCKS ($$))
- BLOCK_SUBBLOCKS ($$) = empty_stmt_node;
- }
-;
-
-block_statements:
- block_statement
-| block_statements block_statement
-;
-
-block_statement:
- local_variable_declaration_statement
-| statement
- { java_method_add_stmt (current_function_decl, $1); }
-| class_declaration /* Added, JDK1.1 local classes */
- {
- LOCAL_CLASS_P (TREE_TYPE (GET_CPC ())) = 1;
- end_class_declaration (1);
- }
-;
-
-local_variable_declaration_statement:
- local_variable_declaration SC_TK /* Can't catch missing ';' here */
-;
-
-local_variable_declaration:
- type variable_declarators
- { declare_local_variables (0, $1, $2); }
-| final type variable_declarators /* Added, JDK1.1 final locals */
- { declare_local_variables ($1, $2, $3); }
-;
-
-statement:
- statement_without_trailing_substatement
-| labeled_statement
-| if_then_statement
-| if_then_else_statement
-| while_statement
-| for_statement
- { $$ = exit_block (); }
-;
-
-statement_nsi:
- statement_without_trailing_substatement
-| labeled_statement_nsi
-| if_then_else_statement_nsi
-| while_statement_nsi
-| for_statement_nsi
- { $$ = exit_block (); }
-;
-
-statement_without_trailing_substatement:
- block
-| empty_statement
-| expression_statement
-| switch_statement
-| do_statement
-| break_statement
-| continue_statement
-| return_statement
-| synchronized_statement
-| throw_statement
-| try_statement
-;
-
-empty_statement:
- SC_TK
- {
- if (flag_extraneous_semicolon
- && ! current_static_block
- && (! current_function_decl ||
- /* Verify we're not in a inner class declaration */
- (GET_CPC () != TYPE_NAME
- (DECL_CONTEXT (current_function_decl)))))
-
- {
- EXPR_WFL_SET_LINECOL (wfl_operator, lineno, -1);
- parse_warning_context (wfl_operator, "An empty declaration is a deprecated feature that should not be used");
- }
- $$ = empty_stmt_node;
- }
-;
-
-label_decl:
- identifier REL_CL_TK
- {
- $$ = build_labeled_block (EXPR_WFL_LINECOL ($1),
- EXPR_WFL_NODE ($1));
- pushlevel (2);
- push_labeled_block ($$);
- PUSH_LABELED_BLOCK ($$);
- }
-;
-
-labeled_statement:
- label_decl statement
- { $$ = finish_labeled_statement ($1, $2); }
-| identifier error
- {yyerror ("':' expected"); RECOVER;}
-;
-
-labeled_statement_nsi:
- label_decl statement_nsi
- { $$ = finish_labeled_statement ($1, $2); }
-;
-
-/* We concentrate here a bunch of error handling rules that we couldn't write
- earlier, because expression_statement catches a missing ';'. */
-expression_statement:
- statement_expression SC_TK
- {
- /* We have a statement. Generate a WFL around it so
- we can debug it */
- $$ = build_expr_wfl ($1, input_filename, lineno, 0);
- /* We know we have a statement, so set the debug
- info to be eventually generate here. */
- $$ = JAVA_MAYBE_GENERATE_DEBUG_INFO ($$);
- }
-| error SC_TK
- {
- YYNOT_TWICE yyerror ("Invalid expression statement");
- DRECOVER (expr_stmt);
- }
-| error OCB_TK
- {
- YYNOT_TWICE yyerror ("Invalid expression statement");
- DRECOVER (expr_stmt);
- }
-| error CCB_TK
- {
- YYNOT_TWICE yyerror ("Invalid expression statement");
- DRECOVER (expr_stmt);
- }
-| this_or_super OP_TK error
- {yyerror ("')' expected"); RECOVER;}
-| this_or_super OP_TK CP_TK error
- {
- parse_ctor_invocation_error ();
- RECOVER;
- }
-| this_or_super OP_TK argument_list error
- {yyerror ("')' expected"); RECOVER;}
-| this_or_super OP_TK argument_list CP_TK error
- {
- parse_ctor_invocation_error ();
- RECOVER;
- }
-| name DOT_TK SUPER_TK error
- {yyerror ("'(' expected"); RECOVER;}
-| name DOT_TK SUPER_TK OP_TK error
- {yyerror ("')' expected"); RECOVER;}
-| name DOT_TK SUPER_TK OP_TK argument_list error
- {yyerror ("')' expected"); RECOVER;}
-| name DOT_TK SUPER_TK OP_TK argument_list CP_TK error
- {yyerror ("';' expected"); RECOVER;}
-| name DOT_TK SUPER_TK OP_TK CP_TK error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-statement_expression:
- assignment
-| pre_increment_expression
-| pre_decrement_expression
-| post_increment_expression
-| post_decrement_expression
-| method_invocation
-| class_instance_creation_expression
-;
-
-if_then_statement:
- IF_TK OP_TK expression CP_TK statement
- {
- $$ = build_if_else_statement ($2.location, $3,
- $5, NULL_TREE);
- }
-| IF_TK error
- {yyerror ("'(' expected"); RECOVER;}
-| IF_TK OP_TK error
- {yyerror ("Missing term"); RECOVER;}
-| IF_TK OP_TK expression error
- {yyerror ("')' expected"); RECOVER;}
-;
-
-if_then_else_statement:
- IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement
- { $$ = build_if_else_statement ($2.location, $3, $5, $7); }
-;
-
-if_then_else_statement_nsi:
- IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement_nsi
- { $$ = build_if_else_statement ($2.location, $3, $5, $7); }
-;
-
-switch_statement:
- switch_expression
- {
- enter_block ();
- }
- switch_block
- {
- /* Make into "proper list" of COMPOUND_EXPRs.
- I.e. make the last statement also have its own
- COMPOUND_EXPR. */
- maybe_absorb_scoping_blocks ();
- TREE_OPERAND ($1, 1) = exit_block ();
- $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $1);
- }
-;
-
-switch_expression:
- SWITCH_TK OP_TK expression CP_TK
- {
- $$ = build (SWITCH_EXPR, NULL_TREE, $3, NULL_TREE);
- EXPR_WFL_LINECOL ($$) = $2.location;
- }
-| SWITCH_TK error
- {yyerror ("'(' expected"); RECOVER;}
-| SWITCH_TK OP_TK error
- {yyerror ("Missing term or ')'"); DRECOVER(switch_statement);}
-| SWITCH_TK OP_TK expression CP_TK error
- {yyerror ("'{' expected"); RECOVER;}
-;
-
-/* Default assignment is there to avoid type node on switch_block
- node. */
-
-switch_block:
- OCB_TK CCB_TK
- { $$ = NULL_TREE; }
-| OCB_TK switch_labels CCB_TK
- { $$ = NULL_TREE; }
-| OCB_TK switch_block_statement_groups CCB_TK
- { $$ = NULL_TREE; }
-| OCB_TK switch_block_statement_groups switch_labels CCB_TK
- { $$ = NULL_TREE; }
-;
-
-switch_block_statement_groups:
- switch_block_statement_group
-| switch_block_statement_groups switch_block_statement_group
-;
-
-switch_block_statement_group:
- switch_labels block_statements
-;
-
-switch_labels:
- switch_label
-| switch_labels switch_label
-;
-
-switch_label:
- CASE_TK constant_expression REL_CL_TK
- {
- tree lab = build1 (CASE_EXPR, NULL_TREE, $2);
- EXPR_WFL_LINECOL (lab) = $1.location;
- java_method_add_stmt (current_function_decl, lab);
- }
-| DEFAULT_TK REL_CL_TK
- {
- tree lab = build (DEFAULT_EXPR, NULL_TREE, NULL_TREE);
- EXPR_WFL_LINECOL (lab) = $1.location;
- java_method_add_stmt (current_function_decl, lab);
- }
-| CASE_TK error
- {yyerror ("Missing or invalid constant expression"); RECOVER;}
-| CASE_TK constant_expression error
- {yyerror ("':' expected"); RECOVER;}
-| DEFAULT_TK error
- {yyerror ("':' expected"); RECOVER;}
-;
-
-while_expression:
- WHILE_TK OP_TK expression CP_TK
- {
- tree body = build_loop_body ($2.location, $3, 0);
- $$ = build_new_loop (body);
- }
-;
-
-while_statement:
- while_expression statement
- { $$ = finish_loop_body (0, NULL_TREE, $2, 0); }
-| WHILE_TK error
- {YYERROR_NOW; yyerror ("'(' expected"); RECOVER;}
-| WHILE_TK OP_TK error
- {yyerror ("Missing term and ')' expected"); RECOVER;}
-| WHILE_TK OP_TK expression error
- {yyerror ("')' expected"); RECOVER;}
-;
-
-while_statement_nsi:
- while_expression statement_nsi
- { $$ = finish_loop_body (0, NULL_TREE, $2, 0); }
-;
-
-do_statement_begin:
- DO_TK
- {
- tree body = build_loop_body (0, NULL_TREE, 1);
- $$ = build_new_loop (body);
- }
- /* Need error handing here. FIXME */
-;
-
-do_statement:
- do_statement_begin statement WHILE_TK OP_TK expression CP_TK SC_TK
- { $$ = finish_loop_body ($4.location, $5, $2, 1); }
-;
-
-for_statement:
- for_begin SC_TK expression SC_TK for_update CP_TK statement
- {
- if (TREE_CODE_CLASS (TREE_CODE ($3)) == 'c')
- $3 = build_wfl_node ($3);
- $$ = finish_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);
- }
-| for_begin SC_TK SC_TK for_update CP_TK statement
- {
- $$ = finish_for_loop (0, NULL_TREE, $4, $6);
- /* We have not condition, so we get rid of the EXIT_EXPR */
- LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) =
- empty_stmt_node;
- }
-| for_begin SC_TK error
- {yyerror ("Invalid control expression"); RECOVER;}
-| for_begin SC_TK expression SC_TK error
- {yyerror ("Invalid update expression"); RECOVER;}
-| for_begin SC_TK SC_TK error
- {yyerror ("Invalid update expression"); RECOVER;}
-;
-
-for_statement_nsi:
- for_begin SC_TK expression SC_TK for_update CP_TK statement_nsi
- { $$ = finish_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);}
-| for_begin SC_TK SC_TK for_update CP_TK statement_nsi
- {
- $$ = finish_for_loop (0, NULL_TREE, $4, $6);
- /* We have not condition, so we get rid of the EXIT_EXPR */
- LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) =
- empty_stmt_node;
- }
-;
-
-for_header:
- FOR_TK OP_TK
- {
- /* This scope defined for local variable that may be
- defined within the scope of the for loop */
- enter_block ();
- }
-| FOR_TK error
- {yyerror ("'(' expected"); DRECOVER(for_1);}
-| FOR_TK OP_TK error
- {yyerror ("Invalid init statement"); RECOVER;}
-;
-
-for_begin:
- for_header for_init
- {
- /* We now declare the loop body. The loop is
- declared as a for loop. */
- tree body = build_loop_body (0, NULL_TREE, 0);
- $$ = build_new_loop (body);
- FOR_LOOP_P ($$) = 1;
- /* The loop is added to the current block the for
- statement is defined within */
- java_method_add_stmt (current_function_decl, $$);
- }
-;
-for_init: /* Can be empty */
- { $$ = empty_stmt_node; }
-| statement_expression_list
- {
- /* Init statement recorded within the previously
- defined block scope */
- $$ = java_method_add_stmt (current_function_decl, $1);
- }
-| local_variable_declaration
- {
- /* Local variable are recorded within the previously
- defined block scope */
- $$ = NULL_TREE;
- }
-| statement_expression_list error
- {yyerror ("';' expected"); DRECOVER(for_init_1);}
-;
-
-for_update: /* Can be empty */
- {$$ = empty_stmt_node;}
-| statement_expression_list
- { $$ = build_debugable_stmt (BUILD_LOCATION (), $1); }
-;
-
-statement_expression_list:
- statement_expression
- { $$ = add_stmt_to_compound (NULL_TREE, NULL_TREE, $1); }
-| statement_expression_list C_TK statement_expression
- { $$ = add_stmt_to_compound ($1, NULL_TREE, $3); }
-| statement_expression_list C_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-break_statement:
- BREAK_TK SC_TK
- { $$ = build_bc_statement ($1.location, 1, NULL_TREE); }
-| BREAK_TK identifier SC_TK
- { $$ = build_bc_statement ($1.location, 1, $2); }
-| BREAK_TK error
- {yyerror ("Missing term"); RECOVER;}
-| BREAK_TK identifier error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-continue_statement:
- CONTINUE_TK SC_TK
- { $$ = build_bc_statement ($1.location, 0, NULL_TREE); }
-| CONTINUE_TK identifier SC_TK
- { $$ = build_bc_statement ($1.location, 0, $2); }
-| CONTINUE_TK error
- {yyerror ("Missing term"); RECOVER;}
-| CONTINUE_TK identifier error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-return_statement:
- RETURN_TK SC_TK
- { $$ = build_return ($1.location, NULL_TREE); }
-| RETURN_TK expression SC_TK
- { $$ = build_return ($1.location, $2); }
-| RETURN_TK error
- {yyerror ("Missing term"); RECOVER;}
-| RETURN_TK expression error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-throw_statement:
- THROW_TK expression SC_TK
- {
- $$ = build1 (THROW_EXPR, NULL_TREE, $2);
- EXPR_WFL_LINECOL ($$) = $1.location;
- }
-| THROW_TK error
- {yyerror ("Missing term"); RECOVER;}
-| THROW_TK expression error
- {yyerror ("';' expected"); RECOVER;}
-;
-
-synchronized_statement:
- synchronized OP_TK expression CP_TK block
- {
- $$ = build (SYNCHRONIZED_EXPR, NULL_TREE, $3, $5);
- EXPR_WFL_LINECOL ($$) =
- EXPR_WFL_LINECOL (MODIFIER_WFL (SYNCHRONIZED_TK));
- }
-| synchronized OP_TK expression CP_TK error
- {yyerror ("'{' expected"); RECOVER;}
-| synchronized error
- {yyerror ("'(' expected"); RECOVER;}
-| synchronized OP_TK error CP_TK
- {yyerror ("Missing term"); RECOVER;}
-| synchronized OP_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-synchronized:
- modifiers
- {
- check_modifiers (
- "Illegal modifier `%s'. Only `synchronized' was expected here",
- $1, ACC_SYNCHRONIZED);
- if ($1 != ACC_SYNCHRONIZED)
- MODIFIER_WFL (SYNCHRONIZED_TK) =
- build_wfl_node (NULL_TREE);
- }
-;
-
-try_statement:
- TRY_TK block catches
- { $$ = build_try_statement ($1.location, $2, $3); }
-| TRY_TK block finally
- { $$ = build_try_finally_statement ($1.location, $2, $3); }
-| TRY_TK block catches finally
- { $$ = build_try_finally_statement
- ($1.location, build_try_statement ($1.location,
- $2, $3), $4);
- }
-| TRY_TK error
- {yyerror ("'{' expected"); DRECOVER (try_statement);}
-;
-
-catches:
- catch_clause
-| catches catch_clause
- {
- TREE_CHAIN ($2) = $1;
- $$ = $2;
- }
-;
-
-catch_clause:
- catch_clause_parameter block
- {
- java_method_add_stmt (current_function_decl, $2);
- exit_block ();
- $$ = $1;
- }
-;
-
-catch_clause_parameter:
- CATCH_TK OP_TK formal_parameter CP_TK
- {
- /* We add a block to define a scope for
- formal_parameter (CCBP). The formal parameter is
- declared initialized by the appropriate function
- call */
- tree ccpb = enter_block ();
- tree init = build_assignment
- (ASSIGN_TK, $2.location, TREE_PURPOSE ($3),
- build (JAVA_EXC_OBJ_EXPR, ptr_type_node));
- declare_local_variables (0, TREE_VALUE ($3),
- build_tree_list (TREE_PURPOSE ($3),
- init));
- $$ = build1 (CATCH_EXPR, NULL_TREE, ccpb);
- EXPR_WFL_LINECOL ($$) = $1.location;
- }
-| CATCH_TK error
- {yyerror ("'(' expected"); RECOVER; $$ = NULL_TREE;}
-| CATCH_TK OP_TK error
- {
- yyerror ("Missing term or ')' expected");
- RECOVER; $$ = NULL_TREE;
- }
-| CATCH_TK OP_TK error CP_TK /* That's for () */
- {yyerror ("Missing term"); RECOVER; $$ = NULL_TREE;}
-;
-
-finally:
- FINALLY_TK block
- { $$ = $2; }
-| FINALLY_TK error
- {yyerror ("'{' expected"); RECOVER; }
-;
-
-/* 19.12 Production from 15: Expressions */
-primary:
- primary_no_new_array
-| array_creation_expression
-;
-
-primary_no_new_array:
- literal
-| THIS_TK
- { $$ = build_this ($1.location); }
-| OP_TK expression CP_TK
- {$$ = $2;}
-| class_instance_creation_expression
-| field_access
-| method_invocation
-| array_access
-| type_literals
- /* Added, JDK1.1 inner classes. Documentation is wrong
- refering to a 'ClassName' (class_name) rule that doesn't
- exist. Used name: instead. */
-| name DOT_TK THIS_TK
- {
- tree wfl = build_wfl_node (this_identifier_node);
- $$ = make_qualified_primary ($1, wfl, EXPR_WFL_LINECOL ($1));
- }
-| OP_TK expression error
- {yyerror ("')' expected"); RECOVER;}
-| name DOT_TK error
- {yyerror ("'class' or 'this' expected" ); RECOVER;}
-| primitive_type DOT_TK error
- {yyerror ("'class' expected" ); RECOVER;}
-| VOID_TK DOT_TK error
- {yyerror ("'class' expected" ); RECOVER;}
-;
-
-type_literals:
- name DOT_TK CLASS_TK
- { $$ = build_incomplete_class_ref ($2.location, $1); }
-| array_type DOT_TK CLASS_TK
- { $$ = build_incomplete_class_ref ($2.location, $1); }
-| primitive_type DOT_TK CLASS_TK
- { $$ = build_incomplete_class_ref ($2.location, $1); }
-| VOID_TK DOT_TK CLASS_TK
- {
- $$ = build_incomplete_class_ref ($2.location,
- void_type_node);
- }
-;
-
-class_instance_creation_expression:
- NEW_TK class_type OP_TK argument_list CP_TK
- { $$ = build_new_invocation ($2, $4); }
-| NEW_TK class_type OP_TK CP_TK
- { $$ = build_new_invocation ($2, NULL_TREE); }
-| anonymous_class_creation
- /* Added, JDK1.1 inner classes, modified to use name or
- primary instead of primary solely which couldn't work in
- all situations. */
-| something_dot_new identifier OP_TK CP_TK
- {
- tree ctor = build_new_invocation ($2, NULL_TREE);
- $$ = make_qualified_primary ($1, ctor,
- EXPR_WFL_LINECOL ($1));
- }
-| something_dot_new identifier OP_TK CP_TK class_body
-| something_dot_new identifier OP_TK argument_list CP_TK
- {
- tree ctor = build_new_invocation ($2, $4);
- $$ = make_qualified_primary ($1, ctor,
- EXPR_WFL_LINECOL ($1));
- }
-| something_dot_new identifier OP_TK argument_list CP_TK class_body
-| NEW_TK error SC_TK
- {yyerror ("'(' expected"); DRECOVER(new_1);}
-| NEW_TK class_type error
- {yyerror ("'(' expected"); RECOVER;}
-| NEW_TK class_type OP_TK error
- {yyerror ("')' or term expected"); RECOVER;}
-| NEW_TK class_type OP_TK argument_list error
- {yyerror ("')' expected"); RECOVER;}
-| something_dot_new error
- {YYERROR_NOW; yyerror ("Identifier expected"); RECOVER;}
-| something_dot_new identifier error
- {yyerror ("'(' expected"); RECOVER;}
-;
-
-/* Created after JDK1.1 rules originally added to
- class_instance_creation_expression, but modified to use
- 'class_type' instead of 'TypeName' (type_name) which is mentionned
- in the documentation but doesn't exist. */
-
-anonymous_class_creation:
- NEW_TK class_type OP_TK argument_list CP_TK
- { create_anonymous_class ($1.location, $2); }
- class_body
- {
- tree id = build_wfl_node (DECL_NAME (GET_CPC ()));
- EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL ($2);
-
- end_class_declaration (1);
-
- /* Now we can craft the new expression */
- $$ = build_new_invocation (id, $4);
-
- /* Note that we can't possibly be here if
- `class_type' is an interface (in which case the
- anonymous class extends Object and implements
- `class_type', hence its constructor can't have
- arguments.) */
-
- /* Otherwise, the innerclass must feature a
- constructor matching `argument_list'. Anonymous
- classes are a bit special: it's impossible to
- define constructor for them, hence constructors
- must be generated following the hints provided by
- the `new' expression. Whether a super constructor
- of that nature exists or not is to be verified
- later on in verify_constructor_super.
-
- It's during the expansion of a `new' statement
- refering to an anonymous class that a ctor will
- be generated for the anonymous class, with the
- right arguments. */
-
- }
-| NEW_TK class_type OP_TK CP_TK
- { create_anonymous_class ($1.location, $2); }
- class_body
- {
- tree id = build_wfl_node (DECL_NAME (GET_CPC ()));
- EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL ($2);
-
- end_class_declaration (1);
-
- /* Now we can craft the new expression. The
- statement doesn't need to be remember so that a
- constructor can be generated, since its signature
- is already known. */
- $$ = build_new_invocation (id, NULL_TREE);
- }
-;
-
-something_dot_new: /* Added, not part of the specs. */
- name DOT_TK NEW_TK
- { $$ = $1; }
-| primary DOT_TK NEW_TK
- { $$ = $1; }
-;
-
-argument_list:
- expression
- {
- $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
- ctxp->formal_parameter_number = 1;
- }
-| argument_list C_TK expression
- {
- ctxp->formal_parameter_number += 1;
- $$ = tree_cons (NULL_TREE, $3, $1);
- }
-| argument_list C_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-array_creation_expression:
- NEW_TK primitive_type dim_exprs
- { $$ = build_newarray_node ($2, $3, 0); }
-| NEW_TK class_or_interface_type dim_exprs
- { $$ = build_newarray_node ($2, $3, 0); }
-| NEW_TK primitive_type dim_exprs dims
- { $$ = build_newarray_node ($2, $3, pop_current_osb (ctxp));}
-| NEW_TK class_or_interface_type dim_exprs dims
- { $$ = build_newarray_node ($2, $3, pop_current_osb (ctxp));}
- /* Added, JDK1.1 anonymous array. Initial documentation rule
- modified */
-| NEW_TK class_or_interface_type dims array_initializer
- {
- char *sig;
- int osb = pop_current_osb (ctxp);
- while (osb--)
- obstack_grow (&temporary_obstack, "[]", 2);
- obstack_1grow (&temporary_obstack, '\0');
- sig = obstack_finish (&temporary_obstack);
- $$ = build (NEW_ANONYMOUS_ARRAY_EXPR, NULL_TREE,
- $2, get_identifier (sig), $4);
- }
-| NEW_TK primitive_type dims array_initializer
- {
- int osb = pop_current_osb (ctxp);
- tree type = $2;
- while (osb--)
- type = build_java_array_type (type, -1);
- $$ = build (NEW_ANONYMOUS_ARRAY_EXPR, NULL_TREE,
- build_pointer_type (type), NULL_TREE, $4);
- }
-| NEW_TK error CSB_TK
- {yyerror ("'[' expected"); DRECOVER ("]");}
-| NEW_TK error OSB_TK
- {yyerror ("']' expected"); RECOVER;}
-;
-
-dim_exprs:
- dim_expr
- { $$ = build_tree_list (NULL_TREE, $1); }
-| dim_exprs dim_expr
- { $$ = tree_cons (NULL_TREE, $2, $$); }
-;
-
-dim_expr:
- OSB_TK expression CSB_TK
- {
- if (JNUMERIC_TYPE_P (TREE_TYPE ($2)))
- {
- $2 = build_wfl_node ($2);
- TREE_TYPE ($2) = NULL_TREE;
- }
- EXPR_WFL_LINECOL ($2) = $1.location;
- $$ = $2;
- }
-| OSB_TK expression error
- {yyerror ("']' expected"); RECOVER;}
-| OSB_TK error
- {
- yyerror ("Missing term");
- yyerror ("']' expected");
- RECOVER;
- }
-;
-
-dims:
- OSB_TK CSB_TK
- {
- int allocate = 0;
- /* If not initialized, allocate memory for the osb
- numbers stack */
- if (!ctxp->osb_limit)
- {
- allocate = ctxp->osb_limit = 32;
- ctxp->osb_depth = -1;
- }
- /* If capacity overflown, reallocate a bigger chunk */
- else if (ctxp->osb_depth+1 == ctxp->osb_limit)
- allocate = ctxp->osb_limit << 1;
-
- if (allocate)
- {
- allocate *= sizeof (int);
- if (ctxp->osb_number)
- ctxp->osb_number = (int *)xrealloc (ctxp->osb_number,
- allocate);
- else
- ctxp->osb_number = (int *)xmalloc (allocate);
- }
- ctxp->osb_depth++;
- CURRENT_OSB (ctxp) = 1;
- }
-| dims OSB_TK CSB_TK
- { CURRENT_OSB (ctxp)++; }
-| dims OSB_TK error
- { yyerror ("']' expected"); RECOVER;}
-;
-
-field_access:
- primary DOT_TK identifier
- { $$ = make_qualified_primary ($1, $3, $2.location); }
- /* FIXME - REWRITE TO:
- { $$ = build_binop (COMPONENT_REF, $2.location, $1, $3); } */
-| SUPER_TK DOT_TK identifier
- {
- tree super_wfl = build_wfl_node (super_identifier_node);
- EXPR_WFL_LINECOL (super_wfl) = $1.location;
- $$ = make_qualified_name (super_wfl, $3, $2.location);
- }
-| SUPER_TK error
- {yyerror ("Field expected"); DRECOVER (super_field_acces);}
-;
-
-method_invocation:
- name OP_TK CP_TK
- { $$ = build_method_invocation ($1, NULL_TREE); }
-| name OP_TK argument_list CP_TK
- { $$ = build_method_invocation ($1, $3); }
-| primary DOT_TK identifier OP_TK CP_TK
- {
- if (TREE_CODE ($1) == THIS_EXPR)
- $$ = build_this_super_qualified_invocation
- (1, $3, NULL_TREE, 0, $2.location);
- else
- {
- tree invok = build_method_invocation ($3, NULL_TREE);
- $$ = make_qualified_primary ($1, invok, $2.location);
- }
- }
-| primary DOT_TK identifier OP_TK argument_list CP_TK
- {
- if (TREE_CODE ($1) == THIS_EXPR)
- $$ = build_this_super_qualified_invocation
- (1, $3, $5, 0, $2.location);
- else
- {
- tree invok = build_method_invocation ($3, $5);
- $$ = make_qualified_primary ($1, invok, $2.location);
- }
- }
-| SUPER_TK DOT_TK identifier OP_TK CP_TK
- {
- $$ = build_this_super_qualified_invocation
- (0, $3, NULL_TREE, $1.location, $2.location);
- }
-| SUPER_TK DOT_TK identifier OP_TK argument_list CP_TK
- {
- $$ = build_this_super_qualified_invocation
- (0, $3, $5, $1.location, $2.location);
- }
- /* Screws up thing. I let it here until I'm convinced it can
- be removed. FIXME
-| primary DOT_TK error
- {yyerror ("'(' expected"); DRECOVER(bad);} */
-| SUPER_TK DOT_TK error CP_TK
- { yyerror ("'(' expected"); DRECOVER (method_invocation); }
-| SUPER_TK DOT_TK error DOT_TK
- { yyerror ("'(' expected"); DRECOVER (method_invocation); }
-;
-
-array_access:
- name OSB_TK expression CSB_TK
- { $$ = build_array_ref ($2.location, $1, $3); }
-| primary_no_new_array OSB_TK expression CSB_TK
- { $$ = build_array_ref ($2.location, $1, $3); }
-| name OSB_TK error
- {
- yyerror ("Missing term and ']' expected");
- DRECOVER(array_access);
- }
-| name OSB_TK expression error
- {
- yyerror ("']' expected");
- DRECOVER(array_access);
- }
-| primary_no_new_array OSB_TK error
- {
- yyerror ("Missing term and ']' expected");
- DRECOVER(array_access);
- }
-| primary_no_new_array OSB_TK expression error
- {
- yyerror ("']' expected");
- DRECOVER(array_access);
- }
-;
-
-postfix_expression:
- primary
-| name
-| post_increment_expression
-| post_decrement_expression
-;
-
-post_increment_expression:
- postfix_expression INCR_TK
- { $$ = build_incdec ($2.token, $2.location, $1, 1); }
-;
-
-post_decrement_expression:
- postfix_expression DECR_TK
- { $$ = build_incdec ($2.token, $2.location, $1, 1); }
-;
-
-trap_overflow_corner_case:
- pre_increment_expression
-| pre_decrement_expression
-| PLUS_TK unary_expression
- {$$ = build_unaryop ($1.token, $1.location, $2); }
-| unary_expression_not_plus_minus
-| PLUS_TK error
- {yyerror ("Missing term"); RECOVER}
-;
-
-unary_expression:
- trap_overflow_corner_case
- {
- error_if_numeric_overflow ($1);
- $$ = $1;
- }
-| MINUS_TK trap_overflow_corner_case
- {$$ = build_unaryop ($1.token, $1.location, $2); }
-| MINUS_TK error
- {yyerror ("Missing term"); RECOVER}
-;
-
-pre_increment_expression:
- INCR_TK unary_expression
- {$$ = build_incdec ($1.token, $1.location, $2, 0); }
-| INCR_TK error
- {yyerror ("Missing term"); RECOVER}
-;
-
-pre_decrement_expression:
- DECR_TK unary_expression
- {$$ = build_incdec ($1.token, $1.location, $2, 0); }
-| DECR_TK error
- {yyerror ("Missing term"); RECOVER}
-;
-
-unary_expression_not_plus_minus:
- postfix_expression
-| NOT_TK unary_expression
- {$$ = build_unaryop ($1.token, $1.location, $2); }
-| NEG_TK unary_expression
- {$$ = build_unaryop ($1.token, $1.location, $2); }
-| cast_expression
-| NOT_TK error
- {yyerror ("Missing term"); RECOVER}
-| NEG_TK error
- {yyerror ("Missing term"); RECOVER}
-;
-
-cast_expression: /* Error handling here is potentially weak */
- OP_TK primitive_type dims CP_TK unary_expression
- {
- tree type = $2;
- int osb = pop_current_osb (ctxp);
- while (osb--)
- type = build_java_array_type (type, -1);
- $$ = build_cast ($1.location, type, $5);
- }
-| OP_TK primitive_type CP_TK unary_expression
- { $$ = build_cast ($1.location, $2, $4); }
-| OP_TK expression CP_TK unary_expression_not_plus_minus
- { $$ = build_cast ($1.location, $2, $4); }
-| OP_TK name dims CP_TK unary_expression_not_plus_minus
- {
- const char *ptr;
- int osb = pop_current_osb (ctxp);
- obstack_grow (&temporary_obstack,
- IDENTIFIER_POINTER (EXPR_WFL_NODE ($2)),
- IDENTIFIER_LENGTH (EXPR_WFL_NODE ($2)));
- while (osb--)
- obstack_grow (&temporary_obstack, "[]", 2);
- obstack_1grow (&temporary_obstack, '\0');
- ptr = obstack_finish (&temporary_obstack);
- EXPR_WFL_NODE ($2) = get_identifier (ptr);
- $$ = build_cast ($1.location, $2, $5);
- }
-| OP_TK primitive_type OSB_TK error
- {yyerror ("']' expected, invalid type expression");}
-| OP_TK error
- {
- YYNOT_TWICE yyerror ("Invalid type expression"); RECOVER;
- RECOVER;
- }
-| OP_TK primitive_type dims CP_TK error
- {yyerror ("Missing term"); RECOVER;}
-| OP_TK primitive_type CP_TK error
- {yyerror ("Missing term"); RECOVER;}
-| OP_TK name dims CP_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-multiplicative_expression:
- unary_expression
-| multiplicative_expression MULT_TK unary_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token),
- $2.location, $1, $3);
- }
-| multiplicative_expression DIV_TK unary_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| multiplicative_expression REM_TK unary_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| multiplicative_expression MULT_TK error
- {yyerror ("Missing term"); RECOVER;}
-| multiplicative_expression DIV_TK error
- {yyerror ("Missing term"); RECOVER;}
-| multiplicative_expression REM_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-additive_expression:
- multiplicative_expression
-| additive_expression PLUS_TK multiplicative_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| additive_expression MINUS_TK multiplicative_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| additive_expression PLUS_TK error
- {yyerror ("Missing term"); RECOVER;}
-| additive_expression MINUS_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-shift_expression:
- additive_expression
-| shift_expression LS_TK additive_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| shift_expression SRS_TK additive_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| shift_expression ZRS_TK additive_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| shift_expression LS_TK error
- {yyerror ("Missing term"); RECOVER;}
-| shift_expression SRS_TK error
- {yyerror ("Missing term"); RECOVER;}
-| shift_expression ZRS_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-relational_expression:
- shift_expression
-| relational_expression LT_TK shift_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| relational_expression GT_TK shift_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| relational_expression LTE_TK shift_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| relational_expression GTE_TK shift_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| relational_expression INSTANCEOF_TK reference_type
- { $$ = build_binop (INSTANCEOF_EXPR, $2.location, $1, $3); }
-| relational_expression LT_TK error
- {yyerror ("Missing term"); RECOVER;}
-| relational_expression GT_TK error
- {yyerror ("Missing term"); RECOVER;}
-| relational_expression LTE_TK error
- {yyerror ("Missing term"); RECOVER;}
-| relational_expression GTE_TK error
- {yyerror ("Missing term"); RECOVER;}
-| relational_expression INSTANCEOF_TK error
- {yyerror ("Invalid reference type"); RECOVER;}
-;
-
-equality_expression:
- relational_expression
-| equality_expression EQ_TK relational_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| equality_expression NEQ_TK relational_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| equality_expression EQ_TK error
- {yyerror ("Missing term"); RECOVER;}
-| equality_expression NEQ_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-and_expression:
- equality_expression
-| and_expression AND_TK equality_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| and_expression AND_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-exclusive_or_expression:
- and_expression
-| exclusive_or_expression XOR_TK and_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| exclusive_or_expression XOR_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-inclusive_or_expression:
- exclusive_or_expression
-| inclusive_or_expression OR_TK exclusive_or_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| inclusive_or_expression OR_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-conditional_and_expression:
- inclusive_or_expression
-| conditional_and_expression BOOL_AND_TK inclusive_or_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| conditional_and_expression BOOL_AND_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-conditional_or_expression:
- conditional_and_expression
-| conditional_or_expression BOOL_OR_TK conditional_and_expression
- {
- $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
- $1, $3);
- }
-| conditional_or_expression BOOL_OR_TK error
- {yyerror ("Missing term"); RECOVER;}
-;
-
-conditional_expression: /* Error handling here is weak */
- conditional_or_expression
-| conditional_or_expression REL_QM_TK expression REL_CL_TK conditional_expression
- {
- $$ = build (CONDITIONAL_EXPR, NULL_TREE, $1, $3, $5);
- EXPR_WFL_LINECOL ($$) = $2.location;
- }
-| conditional_or_expression REL_QM_TK REL_CL_TK error
- {
- YYERROR_NOW;
- yyerror ("Missing term");
- DRECOVER (1);
- }
-| conditional_or_expression REL_QM_TK error
- {yyerror ("Missing term"); DRECOVER (2);}
-| conditional_or_expression REL_QM_TK expression REL_CL_TK error
- {yyerror ("Missing term"); DRECOVER (3);}
-;
-
-assignment_expression:
- conditional_expression
-| assignment
-;
-
-assignment:
- left_hand_side assignment_operator assignment_expression
- { $$ = build_assignment ($2.token, $2.location, $1, $3); }
-| left_hand_side assignment_operator error
- {
- YYNOT_TWICE yyerror ("Missing term");
- DRECOVER (assign);
- }
-;
-
-left_hand_side:
- name
-| field_access
-| array_access
-;
-
-assignment_operator:
- ASSIGN_ANY_TK
-| ASSIGN_TK
-;
-
-expression:
- assignment_expression
-;
-
-constant_expression:
- expression
-;
-
-%%
-
-/* Helper function to retrieve an OSB count. Should be used when the
- `dims:' rule is being used. */
-
-static int
-pop_current_osb (ctxp)
- struct parser_ctxt *ctxp;
-{
- int to_return;
-
- if (ctxp->osb_depth < 0)
- abort ();
-
- to_return = CURRENT_OSB (ctxp);
- ctxp->osb_depth--;
-
- return to_return;
-}
-
-\f
-
-/* This section of the code deal with save/restoring parser contexts.
- Add mode documentation here. FIXME */
-
-/* Helper function. Create a new parser context. With
- COPY_FROM_PREVIOUS set to a non zero value, content of the previous
- context is copied, otherwise, the new context is zeroed. The newly
- created context becomes the current one. */
-
-static void
-create_new_parser_context (copy_from_previous)
- int copy_from_previous;
-{
- struct parser_ctxt *new;
-
- new = (struct parser_ctxt *)xmalloc(sizeof (struct parser_ctxt));
- if (copy_from_previous)
- {
- memcpy ((PTR)new, (PTR)ctxp, sizeof (struct parser_ctxt));
- new->saved_data_ctx = 1;
- }
- else
- memset ((PTR) new, 0, sizeof (struct parser_ctxt));
-
- new->next = ctxp;
- ctxp = new;
-}
-
-/* Create a new parser context and make it the current one. */
-
-void
-java_push_parser_context ()
-{
- create_new_parser_context (0);
-}
-
-void
-java_pop_parser_context (generate)
- int generate;
-{
- tree current;
- struct parser_ctxt *toFree, *next;
-
- if (!ctxp)
- return;
-
- toFree = ctxp;
- next = ctxp->next;
- if (next)
- {
- lineno = ctxp->lineno;
- current_class = ctxp->class_type;
- }
-
- /* If the old and new lexers differ, then free the old one. */
- if (ctxp->lexer && next && ctxp->lexer != next->lexer)
- java_destroy_lexer (ctxp->lexer);
-
- /* Set the single import class file flag to 0 for the current list
- of imported things */
- for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
- IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_VALUE (current)) = 0;
-
- /* And restore those of the previous context */
- if ((ctxp = next)) /* Assignment is really meant here */
- for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
- IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_VALUE (current)) = 1;
-
- /* If we pushed a context to parse a class intended to be generated,
- we keep it so we can remember the class. What we could actually
- do is to just update a list of class names. */
- if (generate)
- {
- toFree->next = ctxp_for_generation;
- ctxp_for_generation = toFree;
- }
- else
- free (toFree);
-}
-
-/* Create a parser context for the use of saving some global
- variables. */
-
-void
-java_parser_context_save_global ()
-{
- if (!ctxp)
- {
- java_push_parser_context ();
- ctxp->saved_data_ctx = 1;
- }
-
- /* If this context already stores data, create a new one suitable
- for data storage. */
- else if (ctxp->saved_data)
- create_new_parser_context (1);
-
- ctxp->lineno = lineno;
- ctxp->class_type = current_class;
- ctxp->filename = input_filename;
- ctxp->function_decl = current_function_decl;
- ctxp->saved_data = 1;
-}
-
-/* Restore some global variables from the previous context. Make the
- previous context the current one. */
-
-void
-java_parser_context_restore_global ()
-{
- lineno = ctxp->lineno;
- current_class = ctxp->class_type;
- input_filename = ctxp->filename;
- if (wfl_operator)
- {
- tree s;
- BUILD_FILENAME_IDENTIFIER_NODE (s, input_filename);
- EXPR_WFL_FILENAME_NODE (wfl_operator) = s;
- }
- current_function_decl = ctxp->function_decl;
- ctxp->saved_data = 0;
- if (ctxp->saved_data_ctx)
- java_pop_parser_context (0);
-}
-
-/* Suspend vital data for the current class/function being parsed so
- that an other class can be parsed. Used to let local/anonymous
- classes be parsed. */
-
-static void
-java_parser_context_suspend ()
-{
- /* This makes debugging through java_debug_context easier */
- static const char *const name = "<inner buffer context>";
-
- /* Duplicate the previous context, use it to save the globals we're
- interested in */
- create_new_parser_context (1);
- ctxp->function_decl = current_function_decl;
- ctxp->class_type = current_class;
-
- /* Then create a new context which inherits all data from the
- previous one. This will be the new current context */
- create_new_parser_context (1);
-
- /* Help debugging */
- ctxp->next->filename = name;
-}
-
-/* Resume vital data for the current class/function being parsed so
- that an other class can be parsed. Used to let local/anonymous
- classes be parsed. The trick is the data storing file position
- informations must be restored to their current value, so parsing
- can resume as if no context was ever saved. */
-
-static void
-java_parser_context_resume ()
-{
- struct parser_ctxt *old = ctxp; /* This one is to be discarded */
- struct parser_ctxt *saver = old->next; /* This one contain saved info */
- struct parser_ctxt *restored = saver->next; /* This one is the old current */
-
- /* We need to inherit the list of classes to complete/generate */
- restored->classd_list = old->classd_list;
- restored->class_list = old->class_list;
-
- /* Restore the current class and function from the saver */
- current_class = saver->class_type;
- current_function_decl = saver->function_decl;
-
- /* Retrive the restored context */
- ctxp = restored;
-
- /* Re-installed the data for the parsing to carry on */
- memcpy (&ctxp->marker_begining, &old->marker_begining,
- (size_t)(&ctxp->marker_end - &ctxp->marker_begining));
-
- /* Buffer context can now be discarded */
- free (saver);
- free (old);
-}
-
-/* Add a new anchor node to which all statement(s) initializing static
- and non static initialized upon declaration field(s) will be
- linked. */
-
-static void
-java_parser_context_push_initialized_field ()
-{
- tree node;
-
- node = build_tree_list (NULL_TREE, NULL_TREE);
- TREE_CHAIN (node) = CPC_STATIC_INITIALIZER_LIST (ctxp);
- CPC_STATIC_INITIALIZER_LIST (ctxp) = node;
-
- node = build_tree_list (NULL_TREE, NULL_TREE);
- TREE_CHAIN (node) = CPC_INITIALIZER_LIST (ctxp);
- CPC_INITIALIZER_LIST (ctxp) = node;
-
- node = build_tree_list (NULL_TREE, NULL_TREE);
- TREE_CHAIN (node) = CPC_INSTANCE_INITIALIZER_LIST (ctxp);
- CPC_INSTANCE_INITIALIZER_LIST (ctxp) = node;
-}
-
-/* Pop the lists of initialized field. If this lists aren't empty,
- remember them so we can use it to create and populate the finit$
- or <clinit> functions. */
-
-static void
-java_parser_context_pop_initialized_field ()
-{
- tree stmts;
- tree class_type = TREE_TYPE (GET_CPC ());
-
- if (CPC_INITIALIZER_LIST (ctxp))
- {
- stmts = CPC_INITIALIZER_STMT (ctxp);
- CPC_INITIALIZER_LIST (ctxp) = TREE_CHAIN (CPC_INITIALIZER_LIST (ctxp));
- if (stmts && !java_error_count)
- TYPE_FINIT_STMT_LIST (class_type) = reorder_static_initialized (stmts);
- }
-
- if (CPC_STATIC_INITIALIZER_LIST (ctxp))
- {
- stmts = CPC_STATIC_INITIALIZER_STMT (ctxp);
- CPC_STATIC_INITIALIZER_LIST (ctxp) =
- TREE_CHAIN (CPC_STATIC_INITIALIZER_LIST (ctxp));
- /* Keep initialization in order to enforce 8.5 */
- if (stmts && !java_error_count)
- TYPE_CLINIT_STMT_LIST (class_type) = nreverse (stmts);
- }
-
- /* JDK 1.1 instance initializers */
- if (CPC_INSTANCE_INITIALIZER_LIST (ctxp))
- {
- stmts = CPC_INSTANCE_INITIALIZER_STMT (ctxp);
- CPC_INSTANCE_INITIALIZER_LIST (ctxp) =
- TREE_CHAIN (CPC_INSTANCE_INITIALIZER_LIST (ctxp));
- if (stmts && !java_error_count)
- TYPE_II_STMT_LIST (class_type) = nreverse (stmts);
- }
-}
-
-static tree
-reorder_static_initialized (list)
- tree list;
-{
- /* We have to keep things in order. The alias initializer have to
- come first, then the initialized regular field, in reverse to
- keep them in lexical order. */
- tree marker, previous = NULL_TREE;
- for (marker = list; marker; previous = marker, marker = TREE_CHAIN (marker))
- if (TREE_CODE (marker) == TREE_LIST
- && !TREE_VALUE (marker) && !TREE_PURPOSE (marker))
- break;
-
- /* No static initialized, the list is fine as is */
- if (!previous)
- list = TREE_CHAIN (marker);
-
- /* No marker? reverse the whole list */
- else if (!marker)
- list = nreverse (list);
-
- /* Otherwise, reverse what's after the marker and the new reordered
- sublist will replace the marker. */
- else
- {
- TREE_CHAIN (previous) = NULL_TREE;
- list = nreverse (list);
- list = chainon (TREE_CHAIN (marker), list);
- }
- return list;
-}
-
-/* Helper functions to dump the parser context stack. */
-
-#define TAB_CONTEXT(C) \
- {int i; for (i = 0; i < (C); i++) fputc (' ', stderr);}
-
-static void
-java_debug_context_do (tab)
- int tab;
-{
- struct parser_ctxt *copy = ctxp;
- while (copy)
- {
- TAB_CONTEXT (tab);
- fprintf (stderr, "ctxt: 0x%0lX\n", (unsigned long)copy);
- TAB_CONTEXT (tab);
- fprintf (stderr, "filename: %s\n", copy->filename);
- TAB_CONTEXT (tab);
- fprintf (stderr, "lineno: %d\n", copy->lineno);
- TAB_CONTEXT (tab);
- fprintf (stderr, "package: %s\n",
- (copy->package ?
- IDENTIFIER_POINTER (copy->package) : "<none>"));
- TAB_CONTEXT (tab);
- fprintf (stderr, "context for saving: %d\n", copy->saved_data_ctx);
- TAB_CONTEXT (tab);
- fprintf (stderr, "saved data: %d\n", copy->saved_data);
- copy = copy->next;
- tab += 2;
- }
-}
-
-/* Dump the stacked up parser contexts. Intended to be called from a
- debugger. */
-
-void
-java_debug_context ()
-{
- java_debug_context_do (0);
-}
-
-\f
-
-/* Flag for the error report routine to issue the error the first time
- it's called (overriding the default behavior which is to drop the
- first invocation and honor the second one, taking advantage of a
- richer context. */
-static int force_error = 0;
-
-/* Reporting an constructor invocation error. */
-static void
-parse_ctor_invocation_error ()
-{
- if (DECL_CONSTRUCTOR_P (current_function_decl))
- yyerror ("Constructor invocation must be first thing in a constructor");
- else
- yyerror ("Only constructors can invoke constructors");
-}
-
-/* Reporting JDK1.1 features not implemented. */
-
-static tree
-parse_jdk1_1_error (msg)
- const char *msg;
-{
- sorry (": `%s' JDK1.1(TM) feature", msg);
- java_error_count++;
- return empty_stmt_node;
-}
-
-static int do_warning = 0;
-
-void
-yyerror (msg)
- const char *msg;
-{
- static java_lc elc;
- static int prev_lineno;
- static const char *prev_msg;
-
- int save_lineno;
- char *remainder, *code_from_source;
-
- if (!force_error && prev_lineno == lineno)
- return;
-
- /* Save current error location but report latter, when the context is
- richer. */
- if (ctxp->java_error_flag == 0)
- {
- ctxp->java_error_flag = 1;
- elc = ctxp->elc;
- /* Do something to use the previous line if we're reaching the
- end of the file... */
-#ifdef VERBOSE_SKELETON
- printf ("* Error detected (%s)\n", (msg ? msg : "(null)"));
-#endif
- return;
- }
-
- /* Ignore duplicate message on the same line. BTW, this is dubious. FIXME */
- if (!force_error && msg == prev_msg && prev_lineno == elc.line)
- return;
-
- ctxp->java_error_flag = 0;
- if (do_warning)
- java_warning_count++;
- else
- java_error_count++;
-
- if (elc.col == 0 && msg && msg[1] == ';')
- {
- elc.col = ctxp->p_line->char_col-1;
- elc.line = ctxp->p_line->lineno;
- }
-
- save_lineno = lineno;
- prev_lineno = lineno = elc.line;
- prev_msg = msg;
-
- code_from_source = java_get_line_col (ctxp->filename, elc.line, elc.col);
- obstack_grow0 (&temporary_obstack,
- code_from_source, strlen (code_from_source));
- remainder = obstack_finish (&temporary_obstack);
- if (do_warning)
- warning ("%s.\n%s", msg, remainder);
- else
- error ("%s.\n%s", msg, remainder);
-
- /* This allow us to cheaply avoid an extra 'Invalid expression
- statement' error report when errors have been already reported on
- the same line. This occurs when we report an error but don't have
- a synchronization point other than ';', which
- expression_statement is the only one to take care of. */
- ctxp->prevent_ese = lineno = save_lineno;
-}
-
-static void
-issue_warning_error_from_context (cl, msg, ap)
- tree cl;
- const char *msg;
- va_list ap;
-{
- const char *saved, *saved_input_filename;
- char buffer [4096];
- vsprintf (buffer, msg, ap);
- force_error = 1;
-
- ctxp->elc.line = EXPR_WFL_LINENO (cl);
- ctxp->elc.col = (EXPR_WFL_COLNO (cl) == 0xfff ? -1 :
- (EXPR_WFL_COLNO (cl) == 0xffe ? -2 : EXPR_WFL_COLNO (cl)));
-
- /* We have a CL, that's a good reason for using it if it contains data */
- saved = ctxp->filename;
- if (TREE_CODE (cl) == EXPR_WITH_FILE_LOCATION && EXPR_WFL_FILENAME_NODE (cl))
- ctxp->filename = EXPR_WFL_FILENAME (cl);
- saved_input_filename = input_filename;
- input_filename = ctxp->filename;
- java_error (NULL);
- java_error (buffer);
- ctxp->filename = saved;
- input_filename = saved_input_filename;
- force_error = 0;
-}
-
-/* Issue an error message at a current source line CL */
-
-void
-parse_error_context VPARAMS ((tree cl, const char *msg, ...))
-{
- VA_OPEN (ap, msg);
- VA_FIXEDARG (ap, tree, cl);
- VA_FIXEDARG (ap, const char *, msg);
- issue_warning_error_from_context (cl, msg, ap);
- VA_CLOSE (ap);
-}
-
-/* Issue a warning at a current source line CL */
-
-static void
-parse_warning_context VPARAMS ((tree cl, const char *msg, ...))
-{
- VA_OPEN (ap, msg);
- VA_FIXEDARG (ap, tree, cl);
- VA_FIXEDARG (ap, const char *, msg);
-
- force_error = do_warning = 1;
- issue_warning_error_from_context (cl, msg, ap);
- do_warning = force_error = 0;
- VA_CLOSE (ap);
-}
-
-static tree
-find_expr_with_wfl (node)
- tree node;
-{
- while (node)
- {
- char code;
- tree to_return;
-
- switch (TREE_CODE (node))
- {
- case BLOCK:
- node = BLOCK_EXPR_BODY (node);
- continue;
-
- case COMPOUND_EXPR:
- to_return = find_expr_with_wfl (TREE_OPERAND (node, 0));
- if (to_return)
- return to_return;
- node = TREE_OPERAND (node, 1);
- continue;
-
- case LOOP_EXPR:
- node = TREE_OPERAND (node, 0);
- continue;
-
- case LABELED_BLOCK_EXPR:
- node = TREE_OPERAND (node, 1);
- continue;
-
- default:
- code = TREE_CODE_CLASS (TREE_CODE (node));
- if (((code == '1') || (code == '2') || (code == 'e'))
- && EXPR_WFL_LINECOL (node))
- return node;
- return NULL_TREE;
- }
- }
- return NULL_TREE;
-}
-
-/* Issue a missing return statement error. Uses METHOD to figure the
- last line of the method the error occurs in. */
-
-static void
-missing_return_error (method)
- tree method;
-{
- EXPR_WFL_SET_LINECOL (wfl_operator, DECL_SOURCE_LINE_LAST (method), -2);
- parse_error_context (wfl_operator, "Missing return statement");
-}
-
-/* Issue an unreachable statement error. From NODE, find the next
- statement to report appropriately. */
-static void
-unreachable_stmt_error (node)
- tree node;
-{
- /* Browse node to find the next expression node that has a WFL. Use
- the location to report the error */
- if (TREE_CODE (node) == COMPOUND_EXPR)
- node = find_expr_with_wfl (TREE_OPERAND (node, 1));
- else
- node = find_expr_with_wfl (node);
-
- if (node)
- {
- EXPR_WFL_SET_LINECOL (wfl_operator, EXPR_WFL_LINENO (node), -2);
- parse_error_context (wfl_operator, "Unreachable statement");
- }
- else
- abort ();
-}
-
-int
-java_report_errors ()
-{
- if (java_error_count)
- fprintf (stderr, "%d error%s",
- java_error_count, (java_error_count == 1 ? "" : "s"));
- if (java_warning_count)
- fprintf (stderr, "%s%d warning%s", (java_error_count ? ", " : ""),
- java_warning_count, (java_warning_count == 1 ? "" : "s"));
- if (java_error_count || java_warning_count)
- putc ('\n', stderr);
- return java_error_count;
-}
-
-static char *
-java_accstring_lookup (flags)
- int flags;
-{
- static char buffer [80];
-#define COPY_RETURN(S) {strcpy (buffer, S); return buffer;}
-
- /* Access modifier looked-up first for easier report on forbidden
- access. */
- if (flags & ACC_PUBLIC) COPY_RETURN ("public");
- if (flags & ACC_PRIVATE) COPY_RETURN ("private");
- if (flags & ACC_PROTECTED) COPY_RETURN ("protected");
- if (flags & ACC_STATIC) COPY_RETURN ("static");
- if (flags & ACC_FINAL) COPY_RETURN ("final");
- if (flags & ACC_SYNCHRONIZED) COPY_RETURN ("synchronized");
- if (flags & ACC_VOLATILE) COPY_RETURN ("volatile");
- if (flags & ACC_TRANSIENT) COPY_RETURN ("transient");
- if (flags & ACC_NATIVE) COPY_RETURN ("native");
- if (flags & ACC_INTERFACE) COPY_RETURN ("interface");
- if (flags & ACC_ABSTRACT) COPY_RETURN ("abstract");
-
- buffer [0] = '\0';
- return buffer;
-#undef COPY_RETURN
-}
-
-/* Issuing error messages upon redefinition of classes, interfaces or
- variables. */
-
-static void
-classitf_redefinition_error (context, id, decl, cl)
- const char *context;
- tree id, decl, cl;
-{
- parse_error_context (cl, "%s `%s' already defined in %s:%d",
- context, IDENTIFIER_POINTER (id),
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
- /* Here we should point out where its redefined. It's a unicode. FIXME */
-}
-
-static void
-variable_redefinition_error (context, name, type, line)
- tree context, name, type;
- int line;
-{
- const char *type_name;
-
- /* Figure a proper name for type. We might haven't resolved it */
- if (TREE_CODE (type) == POINTER_TYPE && !TREE_TYPE (type))
- type_name = IDENTIFIER_POINTER (TYPE_NAME (type));
- else
- type_name = lang_printable_name (type, 0);
-
- parse_error_context (context,
- "Variable `%s' is already defined in this method and was declared `%s %s' at line %d",
- IDENTIFIER_POINTER (name),
- type_name, IDENTIFIER_POINTER (name), line);
-}
-
-/* If ANAME is terminated with `[]', it indicates an array. This
- function returns the number of `[]' found and if this number is
- greater than zero, it extracts the array type name and places it in
- the node pointed to by TRIMMED unless TRIMMED is null. */
-
-static int
-build_type_name_from_array_name (aname, trimmed)
- tree aname;
- tree *trimmed;
-{
- const char *name = IDENTIFIER_POINTER (aname);
- int len = IDENTIFIER_LENGTH (aname);
- int array_dims;
-
- STRING_STRIP_BRACKETS (name, len, array_dims);
-
- if (array_dims && trimmed)
- *trimmed = get_identifier_with_length (name, len);
-
- return array_dims;
-}
-
-static tree
-build_array_from_name (type, type_wfl, name, ret_name)
- tree type, type_wfl, name, *ret_name;
-{
- int more_dims = 0;
-
- /* Eventually get more dims */
- more_dims = build_type_name_from_array_name (name, &name);
-
- /* If we have, then craft a new type for this variable */
- if (more_dims)
- {
- tree save = type;
-
- /* If we have a pointer, use its type */
- if (TREE_CODE (type) == POINTER_TYPE)
- type = TREE_TYPE (type);
-
- /* Building the first dimension of a primitive type uses this
- function */
- if (JPRIMITIVE_TYPE_P (type))
- {
- type = build_java_array_type (type, -1);
- more_dims--;
- }
- /* Otherwise, if we have a WFL for this type, use it (the type
- is already an array on an unresolved type, and we just keep
- on adding dimensions) */
- else if (type_wfl)
- {
- type = type_wfl;
- more_dims += build_type_name_from_array_name (TYPE_NAME (save),
- NULL);
- }
-
- /* Add all the dimensions */
- while (more_dims--)
- type = build_unresolved_array_type (type);
-
- /* The type may have been incomplete in the first place */
- if (type_wfl)
- type = obtain_incomplete_type (type);
- }
-
- if (ret_name)
- *ret_name = name;
- return type;
-}
-
-/* Build something that the type identifier resolver will identify as
- being an array to an unresolved type. TYPE_WFL is a WFL on a
- identifier. */
-
-static tree
-build_unresolved_array_type (type_or_wfl)
- tree type_or_wfl;
-{
- const char *ptr;
- tree wfl;
-
- /* TYPE_OR_WFL might be an array on a resolved type. In this case,
- just create a array type */
- if (TREE_CODE (type_or_wfl) == RECORD_TYPE)
- return build_java_array_type (type_or_wfl, -1);
-
- obstack_grow (&temporary_obstack,
- IDENTIFIER_POINTER (EXPR_WFL_NODE (type_or_wfl)),
- IDENTIFIER_LENGTH (EXPR_WFL_NODE (type_or_wfl)));
- obstack_grow0 (&temporary_obstack, "[]", 2);
- ptr = obstack_finish (&temporary_obstack);
- wfl = build_expr_wfl (get_identifier (ptr),
- EXPR_WFL_FILENAME (type_or_wfl),
- EXPR_WFL_LINENO (type_or_wfl),
- EXPR_WFL_COLNO (type_or_wfl));
- /* Re-install the existing qualifications so that the type can be
- resolved properly. */
- EXPR_WFL_QUALIFICATION (wfl) = EXPR_WFL_QUALIFICATION (type_or_wfl);
- return wfl;
-}
-
-static void
-parser_add_interface (class_decl, interface_decl, wfl)
- tree class_decl, interface_decl, wfl;
-{
- if (maybe_add_interface (TREE_TYPE (class_decl), TREE_TYPE (interface_decl)))
- parse_error_context (wfl, "Interface `%s' repeated",
- IDENTIFIER_POINTER (DECL_NAME (interface_decl)));
-}
-
-/* Bulk of common class/interface checks. Return 1 if an error was
- encountered. TAG is 0 for a class, 1 for an interface. */
-
-static int
-check_class_interface_creation (is_interface, flags, raw_name, qualified_name, decl, cl)
- int is_interface, flags;
- tree raw_name, qualified_name, decl, cl;
-{
- tree node;
- int sca = 0; /* Static class allowed */
- int icaf = 0; /* Inner class allowed flags */
- int uaaf = CLASS_MODIFIERS; /* Usually allowed access flags */
-
- if (!quiet_flag)
- fprintf (stderr, " %s%s %s",
- (CPC_INNER_P () ? "inner" : ""),
- (is_interface ? "interface" : "class"),
- IDENTIFIER_POINTER (qualified_name));
-
- /* Scope of an interface/class type name:
- - Can't be imported by a single type import
- - Can't already exists in the package */
- if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (raw_name)
- && (node = find_name_in_single_imports (raw_name))
- && !CPC_INNER_P ())
- {
- parse_error_context
- (cl, "%s name `%s' clashes with imported type `%s'",
- (is_interface ? "Interface" : "Class"),
- IDENTIFIER_POINTER (raw_name), IDENTIFIER_POINTER (node));
- return 1;
- }
- if (decl && CLASS_COMPLETE_P (decl))
- {
- classitf_redefinition_error ((is_interface ? "Interface" : "Class"),
- qualified_name, decl, cl);
- return 1;
- }
-
- if (check_inner_class_redefinition (raw_name, cl))
- return 1;
-
- /* If public, file name should match class/interface name, except
- when dealing with an inner class */
- if (!CPC_INNER_P () && (flags & ACC_PUBLIC ))
- {
- const char *f;
-
- /* Contains OS dependent assumption on path separator. FIXME */
- for (f = &input_filename [strlen (input_filename)];
- f != input_filename && f[0] != '/' && f[0] != DIR_SEPARATOR;
- f--)
- ;
- if (f[0] == '/' || f[0] == DIR_SEPARATOR)
- f++;
- if (strncmp (IDENTIFIER_POINTER (raw_name),
- f , IDENTIFIER_LENGTH (raw_name)) ||
- f [IDENTIFIER_LENGTH (raw_name)] != '.')
- parse_error_context
- (cl, "Public %s `%s' must be defined in a file called `%s.java'",
- (is_interface ? "interface" : "class"),
- IDENTIFIER_POINTER (qualified_name),
- IDENTIFIER_POINTER (raw_name));
- }
-
- /* Static classes can be declared only in top level classes. Note:
- once static, a inner class is a top level class. */
- if (flags & ACC_STATIC)
- {
- /* Catch the specific error of declaring an class inner class
- with no toplevel enclosing class. Prevent check_modifiers from
- complaining a second time */
- if (CPC_INNER_P () && !TOPLEVEL_CLASS_DECL_P (GET_CPC()))
- {
- parse_error_context (cl, "Inner class `%s' can't be static. Static classes can only occur in interfaces and top-level classes",
- IDENTIFIER_POINTER (qualified_name));
- sca = ACC_STATIC;
- }
- /* Else, in the context of a top-level class declaration, let
- `check_modifiers' do its job, otherwise, give it a go */
- else
- sca = (GET_CPC_LIST () ? ACC_STATIC : 0);
- }
-
- /* Inner classes can be declared private or protected
- within their enclosing classes. */
- if (CPC_INNER_P ())
- {
- /* A class which is local to a block can't be public, private,
- protected or static. But it is created final, so allow this
- one. */
- if (current_function_decl)
- icaf = sca = uaaf = ACC_FINAL;
- else
- {
- check_modifiers_consistency (flags);
- icaf = ACC_PROTECTED;
- if (! CLASS_INTERFACE (GET_CPC ()))
- icaf |= ACC_PRIVATE;
- }
- }
-
- if (is_interface)
- {
- if (CPC_INNER_P ())
- uaaf = INTERFACE_INNER_MODIFIERS;
- else
- uaaf = INTERFACE_MODIFIERS;
-
- check_modifiers ("Illegal modifier `%s' for interface declaration",
- flags, uaaf);
- }
- else
- check_modifiers ((current_function_decl ?
- "Illegal modifier `%s' for local class declaration" :
- "Illegal modifier `%s' for class declaration"),
- flags, uaaf|sca|icaf);
- return 0;
-}
-
-static void
-make_nested_class_name (cpc_list)
- tree cpc_list;
-{
- tree name;
-
- if (!cpc_list)
- return;
- else
- make_nested_class_name (TREE_CHAIN (cpc_list));
-
- /* Pick the qualified name when dealing with the first upmost
- enclosing class */
- name = (TREE_CHAIN (cpc_list) ?
- TREE_PURPOSE (cpc_list) : DECL_NAME (TREE_VALUE (cpc_list)));
- obstack_grow (&temporary_obstack,
- IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name));
- obstack_1grow (&temporary_obstack, '$');
-}
-
-/* Can't redefine a class already defined in an earlier scope. */
-
-static int
-check_inner_class_redefinition (raw_name, cl)
- tree raw_name, cl;
-{
- tree scope_list;
-
- for (scope_list = GET_CPC_LIST (); scope_list;
- scope_list = GET_NEXT_ENCLOSING_CPC (scope_list))
- if (raw_name == GET_CPC_UN_NODE (scope_list))
- {
- parse_error_context
- (cl, "The class name `%s' is already defined in this scope. An inner class may not have the same simple name as any of its enclosing classes",
- IDENTIFIER_POINTER (raw_name));
- return 1;
- }
- return 0;
-}
-
-/* Tries to find a decl for CLASS_TYPE within ENCLOSING. If we fail,
- we remember ENCLOSING and SUPER. */
-
-static tree
-resolve_inner_class (circularity_hash, cl, enclosing, super, class_type)
- struct hash_table *circularity_hash;
- tree cl, *enclosing, *super, class_type;
-{
- tree local_enclosing = *enclosing;
- tree local_super = NULL_TREE;
-
- while (local_enclosing)
- {
- tree intermediate, decl;
-
- hash_lookup (circularity_hash,
- (const hash_table_key) local_enclosing, TRUE, NULL);
-
- if ((decl = find_as_inner_class (local_enclosing, class_type, cl)))
- return decl;
-
- intermediate = local_enclosing;
- /* Explore enclosing contexts. */
- while (INNER_CLASS_DECL_P (intermediate))
- {
- intermediate = DECL_CONTEXT (intermediate);
- if ((decl = find_as_inner_class (intermediate, class_type, cl)))
- return decl;
- }
-
- /* Now go to the upper classes, bail out if necessary. We will
- analyze the returned SUPER and act accordingly (see
- do_resolve_class.) */
- local_super = CLASSTYPE_SUPER (TREE_TYPE (local_enclosing));
- if (!local_super || local_super == object_type_node)
- break;
-
- if (TREE_CODE (local_super) == POINTER_TYPE)
- local_super = do_resolve_class (NULL, local_super, NULL, NULL);
- else
- local_super = TYPE_NAME (local_super);
-
- /* We may not have checked for circular inheritance yet, so do so
- here to prevent an infinite loop. */
- if (hash_lookup (circularity_hash,
- (const hash_table_key) local_super, FALSE, NULL))
- {
- if (!cl)
- cl = lookup_cl (local_enclosing);
-
- parse_error_context
- (cl, "Cyclic inheritance involving %s",
- IDENTIFIER_POINTER (DECL_NAME (local_enclosing)));
- local_enclosing = NULL_TREE;
- }
- else
- local_enclosing = local_super;
- }
-
- /* We failed. Return LOCAL_SUPER and LOCAL_ENCLOSING. */
- *super = local_super;
- *enclosing = local_enclosing;
-
- return NULL_TREE;
-}
-
-/* Within ENCLOSING, find a decl for NAME and return it. NAME can be
- qualified. */
-
-static tree
-find_as_inner_class (enclosing, name, cl)
- tree enclosing, name, cl;
-{
- tree qual, to_return;
- if (!enclosing)
- return NULL_TREE;
-
- name = TYPE_NAME (name);
-
- /* First search: within the scope of `enclosing', search for name */
- if (QUALIFIED_P (name) && cl && EXPR_WFL_NODE (cl) == name)
- qual = EXPR_WFL_QUALIFICATION (cl);
- else if (cl)
- qual = build_tree_list (cl, NULL_TREE);
- else
- qual = build_tree_list (build_expr_wfl (name, NULL, 0, 0), NULL_TREE);
-
- if ((to_return = find_as_inner_class_do (qual, enclosing)))
- return to_return;
-
- /* We're dealing with a qualified name. Try to resolve thing until
- we get something that is an enclosing class. */
- if (QUALIFIED_P (name) && cl && EXPR_WFL_NODE (cl) == name)
- {
- tree acc = NULL_TREE, decl = NULL_TREE, ptr;
-
- for (qual = EXPR_WFL_QUALIFICATION (cl); qual && !decl;
- qual = TREE_CHAIN (qual))
- {
- acc = merge_qualified_name (acc,
- EXPR_WFL_NODE (TREE_PURPOSE (qual)));
- BUILD_PTR_FROM_NAME (ptr, acc);
- decl = do_resolve_class (NULL_TREE, ptr, NULL_TREE, cl);
- }
-
- /* A NULL qual and a decl means that the search ended
- successfully?!? We have to do something then. FIXME */
-
- if (decl)
- enclosing = decl;
- else
- qual = EXPR_WFL_QUALIFICATION (cl);
- }
- /* Otherwise, create a qual for the other part of the resolution. */
- else
- qual = build_tree_list (build_expr_wfl (name, NULL, 0, 0), NULL_TREE);
-
- return find_as_inner_class_do (qual, enclosing);
-}
-
-/* We go inside the list of sub classes and try to find a way
- through. */
-
-static tree
-find_as_inner_class_do (qual, enclosing)
- tree qual, enclosing;
-{
- if (!qual)
- return NULL_TREE;
-
- for (; qual && enclosing; qual = TREE_CHAIN (qual))
- {
- tree name_to_match = EXPR_WFL_NODE (TREE_PURPOSE (qual));
- tree next_enclosing = NULL_TREE;
- tree inner_list;
-
- for (inner_list = DECL_INNER_CLASS_LIST (enclosing);
- inner_list; inner_list = TREE_CHAIN (inner_list))
- {
- if (TREE_VALUE (inner_list) == name_to_match)
- {
- next_enclosing = TREE_PURPOSE (inner_list);
- break;
- }
- }
- enclosing = next_enclosing;
- }
-
- return (!qual && enclosing ? enclosing : NULL_TREE);
-}
-
-/* Reach all inner classes and tie their unqualified name to a
- DECL. */
-
-static void
-set_nested_class_simple_name_value (outer, set)
- tree outer;
- int set;
-{
- tree l;
-
- for (l = DECL_INNER_CLASS_LIST (outer); l; l = TREE_CHAIN (l))
- IDENTIFIER_GLOBAL_VALUE (TREE_VALUE (l)) = (set ?
- TREE_PURPOSE (l) : NULL_TREE);
-}
-
-static void
-link_nested_class_to_enclosing ()
-{
- if (GET_ENCLOSING_CPC ())
- {
- tree enclosing = GET_ENCLOSING_CPC_CONTEXT ();
- DECL_INNER_CLASS_LIST (enclosing) =
- tree_cons (GET_CPC (), GET_CPC_UN (),
- DECL_INNER_CLASS_LIST (enclosing));
- }
-}
-
-static tree
-maybe_make_nested_class_name (name)
- tree name;
-{
- tree id = NULL_TREE;
-
- if (CPC_INNER_P ())
- {
- make_nested_class_name (GET_CPC_LIST ());
- obstack_grow0 (&temporary_obstack,
- IDENTIFIER_POINTER (name),
- IDENTIFIER_LENGTH (name));
- id = get_identifier (obstack_finish (&temporary_obstack));
- if (ctxp->package)
- QUALIFIED_P (id) = 1;
- }
- return id;
-}
-
-/* If DECL is NULL, create and push a new DECL, record the current
- line CL and do other maintenance things. */
-
-static tree
-maybe_create_class_interface_decl (decl, raw_name, qualified_name, cl)
- tree decl, raw_name, qualified_name, cl;
-{
- if (!decl)
- decl = push_class (make_class (), qualified_name);
-
- /* Take care of the file and line business */
- DECL_SOURCE_FILE (decl) = EXPR_WFL_FILENAME (cl);
- /* If we're emiting xrefs, store the line/col number information */
- if (flag_emit_xref)
- DECL_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (cl);
- else
- DECL_SOURCE_LINE (decl) = EXPR_WFL_LINENO (cl);
- CLASS_FROM_SOURCE_P (TREE_TYPE (decl)) = 1;
- CLASS_PARSED_P (TREE_TYPE (decl)) = 1;
- CLASS_FROM_CURRENTLY_COMPILED_P (TREE_TYPE (decl)) =
- IS_A_COMMAND_LINE_FILENAME_P (EXPR_WFL_FILENAME_NODE (cl));
-
- PUSH_CPC (decl, raw_name);
- DECL_CONTEXT (decl) = GET_ENCLOSING_CPC_CONTEXT ();
-
- /* Link the declaration to the already seen ones */
- TREE_CHAIN (decl) = ctxp->class_list;
- ctxp->class_list = decl;
-
- /* Create a new nodes in the global lists */
- gclass_list = tree_cons (NULL_TREE, decl, gclass_list);
- all_class_list = tree_cons (NULL_TREE, decl, all_class_list);
-
- /* Install a new dependency list element */
- create_jdep_list (ctxp);
-
- SOURCE_FRONTEND_DEBUG (("Defining class/interface %s",
- IDENTIFIER_POINTER (qualified_name)));
- return decl;
-}
-
-static void
-add_superinterfaces (decl, interface_list)
- tree decl, interface_list;
-{
- tree node;
- /* Superinterface(s): if present and defined, parser_check_super_interface ()
- takes care of ensuring that:
- - This is an accessible interface type,
- - Circularity detection.
- parser_add_interface is then called. If present but not defined,
- the check operation is delayed until the super interface gets
- defined. */
- for (node = interface_list; node; node = TREE_CHAIN (node))
- {
- tree current = TREE_PURPOSE (node);
- tree idecl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (current));
- if (idecl && CLASS_LOADED_P (TREE_TYPE (idecl)))
- {
- if (!parser_check_super_interface (idecl, decl, current))
- parser_add_interface (decl, idecl, current);
- }
- else
- register_incomplete_type (JDEP_INTERFACE,
- current, decl, NULL_TREE);
- }
-}
-
-/* Create an interface in pass1 and return its decl. Return the
- interface's decl in pass 2. */
-
-static tree
-create_interface (flags, id, super)
- int flags;
- tree id, super;
-{
- tree raw_name = EXPR_WFL_NODE (id);
- tree q_name = parser_qualified_classname (raw_name);
- tree decl = IDENTIFIER_CLASS_VALUE (q_name);
-
- /* Certain syntax errors are making SUPER be like ID. Avoid this
- case. */
- if (ctxp->class_err && id == super)
- super = NULL;
-
- EXPR_WFL_NODE (id) = q_name; /* Keep source location, even if refined. */
-
- /* Basic checks: scope, redefinition, modifiers */
- if (check_class_interface_creation (1, flags, raw_name, q_name, decl, id))
- {
- PUSH_ERROR ();
- return NULL_TREE;
- }
-
- /* Suspend the current parsing context if we're parsing an inner
- interface */
- if (CPC_INNER_P ())
- {
- java_parser_context_suspend ();
- /* Interface members are public. */
- if (CLASS_INTERFACE (GET_CPC ()))
- flags |= ACC_PUBLIC;
- }
-
- /* Push a new context for (static) initialized upon declaration fields */
- java_parser_context_push_initialized_field ();
-
- /* Interface modifiers check
- - public/abstract allowed (already done at that point)
- - abstract is obsolete (comes first, it's a warning, or should be)
- - Can't use twice the same (checked in the modifier rule) */
- if ((flags & ACC_ABSTRACT) && flag_redundant)
- parse_warning_context
- (MODIFIER_WFL (ABSTRACT_TK),
- "Redundant use of `abstract' modifier. Interface `%s' is implicitly abstract", IDENTIFIER_POINTER (raw_name));
-
- /* Create a new decl if DECL is NULL, otherwise fix it */
- decl = maybe_create_class_interface_decl (decl, raw_name, q_name, id);
-
- /* Set super info and mark the class a complete */
- set_super_info (ACC_INTERFACE | flags, TREE_TYPE (decl),
- object_type_node, ctxp->interface_number);
- ctxp->interface_number = 0;
- CLASS_COMPLETE_P (decl) = 1;
- add_superinterfaces (decl, super);
-
- return decl;
-}
-
-/* Anonymous class counter. Will be reset to 1 every time a non
- anonymous class gets created. */
-static int anonymous_class_counter = 1;
-
-/* Patch anonymous class CLASS, by either extending or implementing
- DEP. */
-
-static void
-patch_anonymous_class (type_decl, class_decl, wfl)
- tree type_decl, class_decl, wfl;
-{
- tree class = TREE_TYPE (class_decl);
- tree type = TREE_TYPE (type_decl);
- tree binfo = TYPE_BINFO (class);
-
- /* If it's an interface, implement it */
- if (CLASS_INTERFACE (type_decl))
- {
- tree s_binfo;
- int length;
-
- if (parser_check_super_interface (type_decl, class_decl, wfl))
- return;
-
- s_binfo = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (class)), 0);
- length = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (class))+1;
- TYPE_BINFO_BASETYPES (class) = make_tree_vec (length);
- TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (class)), 0) = s_binfo;
- /* And add the interface */
- parser_add_interface (class_decl, type_decl, wfl);
- }
- /* Otherwise, it's a type we want to extend */
- else
- {
- if (parser_check_super (type_decl, class_decl, wfl))
- return;
- BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (binfo), 0)) = type;
- }
-}
-
-static tree
-create_anonymous_class (location, type_name)
- int location;
- tree type_name;
-{
- char buffer [80];
- tree super = NULL_TREE, itf = NULL_TREE;
- tree id, type_decl, class;
-
- /* The unqualified name of the anonymous class. It's just a number. */
- sprintf (buffer, "%d", anonymous_class_counter++);
- id = build_wfl_node (get_identifier (buffer));
- EXPR_WFL_LINECOL (id) = location;
-
- /* We know about the type to extend/implement. We go ahead */
- if ((type_decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (type_name))))
- {
- /* Create a class which either implements on extends the designated
- class. The class bears an innacessible name. */
- if (CLASS_INTERFACE (type_decl))
- {
- /* It's OK to modify it here. It's been already used and
- shouldn't be reused */
- ctxp->interface_number = 1;
- /* Interfaces should presented as a list of WFLs */
- itf = build_tree_list (type_name, NULL_TREE);
- }
- else
- super = type_name;
- }
-
- class = create_class (ACC_FINAL, id, super, itf);
-
- /* We didn't know anything about the stuff. We register a dependence. */
- if (!type_decl)
- register_incomplete_type (JDEP_ANONYMOUS, type_name, class, NULL_TREE);
-
- ANONYMOUS_CLASS_P (TREE_TYPE (class)) = 1;
- return class;
-}
-
-/* Create a class in pass1 and return its decl. Return class
- interface's decl in pass 2. */
-
-static tree
-create_class (flags, id, super, interfaces)
- int flags;
- tree id, super, interfaces;
-{
- tree raw_name = EXPR_WFL_NODE (id);
- tree class_id, decl;
- tree super_decl_type;
-
- /* Certain syntax errors are making SUPER be like ID. Avoid this
- case. */
- if (ctxp->class_err && id == super)
- super = NULL;
-
- class_id = parser_qualified_classname (raw_name);
- decl = IDENTIFIER_CLASS_VALUE (class_id);
- EXPR_WFL_NODE (id) = class_id;
-
- /* Basic check: scope, redefinition, modifiers */
- if (check_class_interface_creation (0, flags, raw_name, class_id, decl, id))
- {
- PUSH_ERROR ();
- return NULL_TREE;
- }
-
- /* Suspend the current parsing context if we're parsing an inner
- class or an anonymous class. */
- if (CPC_INNER_P ())
- {
- java_parser_context_suspend ();
- /* Interface members are public. */
- if (CLASS_INTERFACE (GET_CPC ()))
- flags |= ACC_PUBLIC;
- }
-
- /* Push a new context for (static) initialized upon declaration fields */
- java_parser_context_push_initialized_field ();
-
- /* Class modifier check:
- - Allowed modifier (already done at that point)
- - abstract AND final forbidden
- - Public classes defined in the correct file */
- if ((flags & ACC_ABSTRACT) && (flags & ACC_FINAL))
- parse_error_context
- (id, "Class `%s' can't be declared both abstract and final",
- IDENTIFIER_POINTER (raw_name));
-
- /* Create a new decl if DECL is NULL, otherwise fix it */
- decl = maybe_create_class_interface_decl (decl, raw_name, class_id, id);
-
- /* If SUPER exists, use it, otherwise use Object */
- if (super)
- {
- /* Can't extend java.lang.Object */
- if (TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_id)) == object_type_node)
- {
- parse_error_context (id, "Can't extend `java.lang.Object'");
- return NULL_TREE;
- }
-
- super_decl_type =
- register_incomplete_type (JDEP_SUPER, super, decl, NULL_TREE);
- }
- else if (TREE_TYPE (decl) != object_type_node)
- super_decl_type = object_type_node;
- /* We're defining java.lang.Object */
- else
- super_decl_type = NULL_TREE;
-
- /* A class nested in an interface is implicitly static. */
- if (INNER_CLASS_DECL_P (decl)
- && CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (DECL_CONTEXT (decl)))))
- {
- flags |= ACC_STATIC;
- }
-
- /* Set super info and mark the class as complete. */
- set_super_info (flags, TREE_TYPE (decl), super_decl_type,
- ctxp->interface_number);
- ctxp->interface_number = 0;
- CLASS_COMPLETE_P (decl) = 1;
- add_superinterfaces (decl, interfaces);
-
- /* Add the private this$<n> field, Replicate final locals still in
- scope as private final fields mangled like val$<local_name>.
- This doesn't not occur for top level (static) inner classes. */
- if (PURE_INNER_CLASS_DECL_P (decl))
- add_inner_class_fields (decl, current_function_decl);
-
- /* If doing xref, store the location at which the inherited class
- (if any) was seen. */
- if (flag_emit_xref && super)
- DECL_INHERITED_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (super);
-
- /* Eventually sets the @deprecated tag flag */
- CHECK_DEPRECATED (decl);
-
- /* Reset the anonymous class counter when declaring non inner classes */
- if (!INNER_CLASS_DECL_P (decl))
- anonymous_class_counter = 1;
-
- return decl;
-}
-
-/* End a class declaration: register the statements used to create
- finit$ and <clinit>, pop the current class and resume the prior
- parser context if necessary. */
-
-static void
-end_class_declaration (resume)
- int resume;
-{
- /* If an error occurred, context weren't pushed and won't need to be
- popped by a resume. */
- int no_error_occurred = ctxp->next && GET_CPC () != error_mark_node;
-
- if (GET_CPC () != error_mark_node)
- dump_java_tree (TDI_class, GET_CPC ());
-
- java_parser_context_pop_initialized_field ();
- POP_CPC ();
- if (resume && no_error_occurred)
- java_parser_context_resume ();
-
- /* We're ending a class declaration, this is a good time to reset
- the interface cout. Note that might have been already done in
- create_interface, but if at that time an inner class was being
- dealt with, the interface count was reset in a context created
- for the sake of handling inner classes declaration. */
- ctxp->interface_number = 0;
-}
-
-static void
-add_inner_class_fields (class_decl, fct_decl)
- tree class_decl;
- tree fct_decl;
-{
- tree block, marker, f;
-
- f = add_field (TREE_TYPE (class_decl),
- build_current_thisn (TREE_TYPE (class_decl)),
- build_pointer_type (TREE_TYPE (DECL_CONTEXT (class_decl))),
- ACC_PRIVATE);
- FIELD_THISN (f) = 1;
-
- if (!fct_decl)
- return;
-
- for (block = GET_CURRENT_BLOCK (fct_decl);
- block && TREE_CODE (block) == BLOCK; block = BLOCK_SUPERCONTEXT (block))
- {
- tree decl;
- for (decl = BLOCK_EXPR_DECLS (block); decl; decl = TREE_CHAIN (decl))
- {
- tree name, pname;
- tree wfl, init, list;
-
- /* Avoid non final arguments. */
- if (!LOCAL_FINAL_P (decl))
- continue;
-
- MANGLE_OUTER_LOCAL_VARIABLE_NAME (name, DECL_NAME (decl));
- MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_ID (pname, DECL_NAME (decl));
- wfl = build_wfl_node (name);
- init = build_wfl_node (pname);
- /* Build an initialization for the field: it will be
- initialized by a parameter added to finit$, bearing a
- mangled name of the field itself (param$<n>.) The
- parameter is provided to finit$ by the constructor
- invoking it (hence the constructor will also feature a
- hidden parameter, set to the value of the outer context
- local at the time the inner class is created.)
-
- Note: we take into account all possible locals that can
- be accessed by the inner class. It's actually not trivial
- to minimize these aliases down to the ones really
- used. One way to do that would be to expand all regular
- methods first, then finit$ to get a picture of what's
- used. It works with the exception that we would have to
- go back on all constructor invoked in regular methods to
- have their invokation reworked (to include the right amount
- of alias initializer parameters.)
-
- The only real way around, I think, is a first pass to
- identify locals really used in the inner class. We leave
- the flag FIELD_LOCAL_ALIAS_USED around for that future
- use.
-
- On the other hand, it only affect local inner classes,
- whose constructors (and finit$ call) will be featuring
- unecessary arguments. It's easy for a developper to keep
- this number of parameter down by using the `final'
- keyword only when necessary. For the time being, we can
- issue a warning on unecessary finals. FIXME */
- init = build_assignment (ASSIGN_TK, EXPR_WFL_LINECOL (wfl),
- wfl, init);
-
- /* Register the field. The TREE_LIST holding the part
- initialized/initializer will be marked ARG_FINAL_P so
- that the created field can be marked
- FIELD_LOCAL_ALIAS. */
- list = build_tree_list (wfl, init);
- ARG_FINAL_P (list) = 1;
- register_fields (ACC_PRIVATE | ACC_FINAL, TREE_TYPE (decl), list);
- }
- }
-
- if (!CPC_INITIALIZER_STMT (ctxp))
- return;
-
- /* If we ever registered an alias field, insert and marker to
- remeber where the list ends. The second part of the list (the one
- featuring initialized fields) so it can be later reversed to
- enforce 8.5. The marker will be removed during that operation. */
- marker = build_tree_list (NULL_TREE, NULL_TREE);
- TREE_CHAIN (marker) = CPC_INITIALIZER_STMT (ctxp);
- SET_CPC_INITIALIZER_STMT (ctxp, marker);
-}
-
-/* Can't use lookup_field () since we don't want to load the class and
- can't set the CLASS_LOADED_P flag */
-
-static tree
-find_field (class, name)
- tree class;
- tree name;
-{
- tree decl;
- for (decl = TYPE_FIELDS (class); decl; decl = TREE_CHAIN (decl))
- {
- if (DECL_NAME (decl) == name)
- return decl;
- }
- return NULL_TREE;
-}
-
-/* Wrap around lookup_field that doesn't potentially upset the value
- of CLASS */
-
-static tree
-lookup_field_wrapper (class, name)
- tree class, name;
-{
- tree type = class;
- tree decl = NULL_TREE;
- java_parser_context_save_global ();
-
- /* Last chance: if we're within the context of an inner class, we
- might be trying to access a local variable defined in an outer
- context. We try to look for it now. */
- if (INNER_CLASS_TYPE_P (class) && TREE_CODE (name) == IDENTIFIER_NODE)
- {
- tree new_name;
- MANGLE_OUTER_LOCAL_VARIABLE_NAME (new_name, name);
- decl = lookup_field (&type, new_name);
- if (decl && decl != error_mark_node)
- FIELD_LOCAL_ALIAS_USED (decl) = 1;
- }
- if (!decl || decl == error_mark_node)
- {
- type = class;
- decl = lookup_field (&type, name);
- }
-
- /* If the field still hasn't been found, try the next enclosing context. */
- if (!decl && INNER_CLASS_TYPE_P (class))
- {
- tree outer_type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class)));
- decl = lookup_field_wrapper (outer_type, name);
- }
-
- java_parser_context_restore_global ();
- return decl == error_mark_node ? NULL : decl;
-}
-
-/* Find duplicate field within the same class declarations and report
- the error. Returns 1 if a duplicated field was found, 0
- otherwise. */
-
-static int
-duplicate_declaration_error_p (new_field_name, new_type, cl)
- tree new_field_name, new_type, cl;
-{
- /* This might be modified to work with method decl as well */
- tree decl = find_field (TREE_TYPE (GET_CPC ()), new_field_name);
- if (decl)
- {
- char *t1 = xstrdup (purify_type_name
- ((TREE_CODE (new_type) == POINTER_TYPE
- && TREE_TYPE (new_type) == NULL_TREE) ?
- IDENTIFIER_POINTER (TYPE_NAME (new_type)) :
- lang_printable_name (new_type, 1)));
- /* The type may not have been completed by the time we report
- the error */
- char *t2 = xstrdup (purify_type_name
- ((TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE
- && TREE_TYPE (TREE_TYPE (decl)) == NULL_TREE) ?
- IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))) :
- lang_printable_name (TREE_TYPE (decl), 1)));
- parse_error_context
- (cl , "Duplicate variable declaration: `%s %s' was `%s %s' (%s:%d)",
- t1, IDENTIFIER_POINTER (new_field_name),
- t2, IDENTIFIER_POINTER (DECL_NAME (decl)),
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
- free (t1);
- free (t2);
- return 1;
- }
- return 0;
-}
-
-/* Field registration routine. If TYPE doesn't exist, field
- declarations are linked to the undefined TYPE dependency list, to
- be later resolved in java_complete_class () */
-
-static void
-register_fields (flags, type, variable_list)
- int flags;
- tree type, variable_list;
-{
- tree current, saved_type;
- tree class_type = NULL_TREE;
- int saved_lineno = lineno;
- int must_chain = 0;
- tree wfl = NULL_TREE;
-
- if (GET_CPC ())
- class_type = TREE_TYPE (GET_CPC ());
-
- if (!class_type || class_type == error_mark_node)
- return;
-
- /* If we're adding fields to interfaces, those fields are public,
- static, final */
- if (CLASS_INTERFACE (TYPE_NAME (class_type)))
- {
- OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (PUBLIC_TK),
- flags, ACC_PUBLIC, "interface field(s)");
- OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (STATIC_TK),
- flags, ACC_STATIC, "interface field(s)");
- OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (FINAL_TK),
- flags, ACC_FINAL, "interface field(s)");
- check_modifiers ("Illegal interface member modifier `%s'", flags,
- INTERFACE_FIELD_MODIFIERS);
- flags |= (ACC_PUBLIC | ACC_STATIC | ACC_FINAL);
- }
-
- /* Obtain a suitable type for resolution, if necessary */
- SET_TYPE_FOR_RESOLUTION (type, wfl, must_chain);
-
- /* If TYPE is fully resolved and we don't have a reference, make one */
- PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
-
- for (current = variable_list, saved_type = type; current;
- current = TREE_CHAIN (current), type = saved_type)
- {
- tree real_type;
- tree field_decl;
- tree cl = TREE_PURPOSE (current);
- tree init = TREE_VALUE (current);
- tree current_name = EXPR_WFL_NODE (cl);
-
- /* Can't declare non-final static fields in inner classes */
- if ((flags & ACC_STATIC) && !TOPLEVEL_CLASS_TYPE_P (class_type)
- && !(flags & ACC_FINAL))
- parse_error_context
- (cl, "Field `%s' can't be static in inner class `%s' unless it is final",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (cl)),
- lang_printable_name (class_type, 0));
-
- /* Process NAME, as it may specify extra dimension(s) for it */
- type = build_array_from_name (type, wfl, current_name, ¤t_name);
-
- /* Type adjustment. We may have just readjusted TYPE because
- the variable specified more dimensions. Make sure we have
- a reference if we can and don't have one already. Also
- change the name if we have an init. */
- if (type != saved_type)
- {
- PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
- if (init)
- EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = current_name;
- }
-
- real_type = GET_REAL_TYPE (type);
- /* Check for redeclarations */
- if (duplicate_declaration_error_p (current_name, real_type, cl))
- continue;
-
- /* Set lineno to the line the field was found and create a
- declaration for it. Eventually sets the @deprecated tag flag. */
- if (flag_emit_xref)
- lineno = EXPR_WFL_LINECOL (cl);
- else
- lineno = EXPR_WFL_LINENO (cl);
- field_decl = add_field (class_type, current_name, real_type, flags);
- CHECK_DEPRECATED (field_decl);
-
- /* If the field denotes a final instance variable, then we
- allocate a LANG_DECL_SPECIFIC part to keep track of its
- initialization. We also mark whether the field was
- initialized upon its declaration. We don't do that if the
- created field is an alias to a final local. */
- if (!ARG_FINAL_P (current) && (flags & ACC_FINAL))
- {
- MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (field_decl);
- DECL_FIELD_FINAL_WFL (field_decl) = cl;
- }
-
- /* If the couple initializer/initialized is marked ARG_FINAL_P,
- we mark the created field FIELD_LOCAL_ALIAS, so that we can
- hide parameters to this inner class finit$ and
- constructors. It also means that the field isn't final per
- say. */
- if (ARG_FINAL_P (current))
- {
- FIELD_LOCAL_ALIAS (field_decl) = 1;
- FIELD_FINAL (field_decl) = 0;
- }
-
- /* Check if we must chain. */
- if (must_chain)
- register_incomplete_type (JDEP_FIELD, wfl, field_decl, type);
-
- /* If we have an initialization value tied to the field */
- if (init)
- {
- /* The field is declared static */
- if (flags & ACC_STATIC)
- {
- /* We include the field and its initialization part into
- a list used to generate <clinit>. After <clinit> is
- walked, field initializations will be processed and
- fields initialized with known constants will be taken
- out of <clinit> and have their DECL_INITIAL set
- appropriately. */
- TREE_CHAIN (init) = CPC_STATIC_INITIALIZER_STMT (ctxp);
- SET_CPC_STATIC_INITIALIZER_STMT (ctxp, init);
- if (TREE_OPERAND (init, 1)
- && TREE_CODE (TREE_OPERAND (init, 1)) == NEW_ARRAY_INIT)
- TREE_STATIC (TREE_OPERAND (init, 1)) = 1;
- }
- /* A non-static field declared with an immediate initialization is
- to be initialized in <init>, if any. This field is remembered
- to be processed at the time of the generation of <init>. */
- else
- {
- TREE_CHAIN (init) = CPC_INITIALIZER_STMT (ctxp);
- SET_CPC_INITIALIZER_STMT (ctxp, init);
- }
- MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1;
- DECL_INITIAL (field_decl) = TREE_OPERAND (init, 1);
- }
- }
- lineno = saved_lineno;
-}
-
-/* Generate finit$, using the list of initialized fields to populate
- its body. finit$'s parameter(s) list is adjusted to include the
- one(s) used to initialized the field(s) caching outer context
- local(s). */
-
-static tree
-generate_finit (class_type)
- tree class_type;
-{
- int count = 0;
- tree list = TYPE_FINIT_STMT_LIST (class_type);
- tree mdecl, current, parms;
-
- parms = build_alias_initializer_parameter_list (AIPL_FUNCTION_CREATION,
- class_type, NULL_TREE,
- &count);
- CRAFTED_PARAM_LIST_FIXUP (parms);
- mdecl = create_artificial_method (class_type, ACC_PRIVATE, void_type_node,
- finit_identifier_node, parms);
- fix_method_argument_names (parms, mdecl);
- layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
- mdecl, NULL_TREE);
- DECL_FUNCTION_NAP (mdecl) = count;
- start_artificial_method_body (mdecl);
-
- for (current = list; current; current = TREE_CHAIN (current))
- java_method_add_stmt (mdecl,
- build_debugable_stmt (EXPR_WFL_LINECOL (current),
- current));
- end_artificial_method_body (mdecl);
- return mdecl;
-}
-
-/* Generate a function to run the instance initialization code. The
- private method is called `instinit$'. Unless we're dealing with an
- anonymous class, we determine whether all ctors of CLASS_TYPE
- declare a checked exception in their `throws' clause in order to
- see whether it's necessary to encapsulate the instance initializer
- statements in a try/catch/rethrow sequence. */
-
-static tree
-generate_instinit (class_type)
- tree class_type;
-{
- tree current;
- tree compound = NULL_TREE;
- tree parms = tree_cons (this_identifier_node,
- build_pointer_type (class_type), end_params_node);
- tree mdecl = create_artificial_method (class_type, ACC_PRIVATE,
- void_type_node,
- instinit_identifier_node, parms);
-
- layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
- mdecl, NULL_TREE);
-
- /* Gather all the statements in a compound */
- for (current = TYPE_II_STMT_LIST (class_type);
- current; current = TREE_CHAIN (current))
- compound = add_stmt_to_compound (compound, NULL_TREE, current);
-
- /* We need to encapsulate COMPOUND by a try/catch statement to
- rethrow exceptions that might occur in the instance initializer.
- We do that only if all ctors of CLASS_TYPE are set to catch a
- checked exception. This doesn't apply to anonymous classes (since
- they don't have declared ctors.) */
- if (!ANONYMOUS_CLASS_P (class_type) &&
- ctors_unchecked_throws_clause_p (class_type))
- {
- compound = encapsulate_with_try_catch (0, exception_type_node, compound,
- build1 (THROW_EXPR, NULL_TREE,
- build_wfl_node (wpv_id)));
- DECL_FUNCTION_THROWS (mdecl) = build_tree_list (NULL_TREE,
- exception_type_node);
- }
-
- start_artificial_method_body (mdecl);
- java_method_add_stmt (mdecl, compound);
- end_artificial_method_body (mdecl);
-
- return mdecl;
-}
-
-/* FIXME */
-static tree
-build_instinit_invocation (class_type)
- tree class_type;
-{
- tree to_return = NULL_TREE;
-
- if (TYPE_II_STMT_LIST (class_type))
- {
- tree parm = build_tree_list (NULL_TREE,
- build_wfl_node (this_identifier_node));
- to_return =
- build_method_invocation (build_wfl_node (instinit_identifier_node),
- parm);
- }
- return to_return;
-}
-
-/* Shared accros method_declarator and method_header to remember the
- patch stage that was reached during the declaration of the method.
- A method DECL is built differently is there is no patch
- (JDEP_NO_PATCH) or a patch (JDEP_METHOD or JDEP_METHOD_RETURN)
- pending on the currently defined method. */
-
-static int patch_stage;
-
-/* Check the method declaration and add the method to its current
- class. If the argument list is known to contain incomplete types,
- the method is partially added and the registration will be resume
- once the method arguments resolved. If TYPE is NULL, we're dealing
- with a constructor. */
-
-static tree
-method_header (flags, type, mdecl, throws)
- int flags;
- tree type, mdecl, throws;
-{
- tree type_wfl = NULL_TREE;
- tree meth_name = NULL_TREE;
- tree current, orig_arg, this_class = NULL;
- tree id, meth;
- int saved_lineno;
- int constructor_ok = 0, must_chain;
- int count;
-
- if (mdecl == error_mark_node)
- return error_mark_node;
- meth = TREE_VALUE (mdecl);
- id = TREE_PURPOSE (mdecl);
-
- check_modifiers_consistency (flags);
-
- if (GET_CPC ())
- this_class = TREE_TYPE (GET_CPC ());
-
- if (!this_class || this_class == error_mark_node)
- return NULL_TREE;
-
- /* There are some forbidden modifiers for an abstract method and its
- class must be abstract as well. */
- if (type && (flags & ACC_ABSTRACT))
- {
- ABSTRACT_CHECK (flags, ACC_PRIVATE, id, "Private");
- ABSTRACT_CHECK (flags, ACC_STATIC, id, "Static");
- ABSTRACT_CHECK (flags, ACC_FINAL, id, "Final");
- ABSTRACT_CHECK (flags, ACC_NATIVE, id, "Native");
- ABSTRACT_CHECK (flags, ACC_SYNCHRONIZED, id, "Synchronized");
- ABSTRACT_CHECK (flags, ACC_STRICT, id, "Strictfp");
- if (!CLASS_ABSTRACT (TYPE_NAME (this_class))
- && !CLASS_INTERFACE (TYPE_NAME (this_class)))
- parse_error_context
- (id, "Class `%s' must be declared abstract to define abstract method `%s'",
- IDENTIFIER_POINTER (DECL_NAME (GET_CPC ())),
- IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
- }
-
- /* Things to be checked when declaring a constructor */
- if (!type)
- {
- int ec = java_error_count;
- /* 8.6: Constructor declarations: we might be trying to define a
- method without specifying a return type. */
- if (EXPR_WFL_NODE (id) != GET_CPC_UN ())
- parse_error_context
- (id, "Invalid method declaration, return type required");
- /* 8.6.3: Constructor modifiers */
- else
- {
- JCONSTRUCTOR_CHECK (flags, ACC_ABSTRACT, id, "abstract");
- JCONSTRUCTOR_CHECK (flags, ACC_STATIC, id, "static");
- JCONSTRUCTOR_CHECK (flags, ACC_FINAL, id, "final");
- JCONSTRUCTOR_CHECK (flags, ACC_NATIVE, id, "native");
- JCONSTRUCTOR_CHECK (flags, ACC_SYNCHRONIZED, id, "synchronized");
- JCONSTRUCTOR_CHECK (flags, ACC_STRICT, id, "strictfp");
- }
- /* If we found error here, we don't consider it's OK to tread
- the method definition as a constructor, for the rest of this
- function */
- if (ec == java_error_count)
- constructor_ok = 1;
- }
-
- /* Method declared within the scope of an interface are implicitly
- abstract and public. Conflicts with other erroneously provided
- modifiers are checked right after. */
-
- if (CLASS_INTERFACE (TYPE_NAME (this_class)))
- {
- /* If FLAGS isn't set because of a modifier, turn the
- corresponding modifier WFL to NULL so we issue a warning on
- the obsolete use of the modifier */
- if (!(flags & ACC_PUBLIC))
- MODIFIER_WFL (PUBLIC_TK) = NULL;
- if (!(flags & ACC_ABSTRACT))
- MODIFIER_WFL (ABSTRACT_TK) = NULL;
- flags |= ACC_PUBLIC;
- flags |= ACC_ABSTRACT;
- }
-
- /* Inner class can't declare static methods */
- if ((flags & ACC_STATIC) && !TOPLEVEL_CLASS_TYPE_P (this_class))
- {
- parse_error_context
- (id, "Method `%s' can't be static in inner class `%s'. Only members of interfaces and top-level classes can be static",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (id)),
- lang_printable_name (this_class, 0));
- }
-
- /* Modifiers context reset moved up, so abstract method declaration
- modifiers can be later checked. */
-
- /* Set constructor returned type to void and method name to <init>,
- unless we found an error identifier the constructor (in which
- case we retain the original name) */
- if (!type)
- {
- type = void_type_node;
- if (constructor_ok)
- meth_name = init_identifier_node;
- }
- else
- meth_name = EXPR_WFL_NODE (id);
-
- /* Do the returned type resolution and registration if necessary */
- SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);
-
- if (meth_name)
- type = build_array_from_name (type, type_wfl, meth_name, &meth_name);
- EXPR_WFL_NODE (id) = meth_name;
- PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
-
- if (must_chain)
- {
- patch_stage = JDEP_METHOD_RETURN;
- register_incomplete_type (patch_stage, type_wfl, id, type);
- TREE_TYPE (meth) = GET_REAL_TYPE (type);
- }
- else
- TREE_TYPE (meth) = type;
-
- saved_lineno = lineno;
- /* When defining an abstract or interface method, the curly
- bracket at level 1 doesn't exist because there is no function
- body */
- lineno = (ctxp->first_ccb_indent1 ? ctxp->first_ccb_indent1 :
- EXPR_WFL_LINENO (id));
-
- /* Remember the original argument list */
- orig_arg = TYPE_ARG_TYPES (meth);
-
- if (patch_stage) /* includes ret type and/or all args */
- {
- jdep *jdep;
- meth = add_method_1 (this_class, flags, meth_name, meth);
- /* Patch for the return type */
- if (patch_stage == JDEP_METHOD_RETURN)
- {
- jdep = CLASSD_LAST (ctxp->classd_list);
- JDEP_GET_PATCH (jdep) = &TREE_TYPE (TREE_TYPE (meth));
- }
- /* This is the stop JDEP. METH allows the function's signature
- to be computed. */
- register_incomplete_type (JDEP_METHOD_END, NULL_TREE, meth, NULL_TREE);
- }
- else
- meth = add_method (this_class, flags, meth_name,
- build_java_signature (meth));
-
- /* Remember final parameters */
- MARK_FINAL_PARMS (meth, orig_arg);
-
- /* Fix the method argument list so we have the argument name
- information */
- fix_method_argument_names (orig_arg, meth);
-
- /* Register the parameter number and re-install the current line
- number */
- DECL_MAX_LOCALS (meth) = ctxp->formal_parameter_number+1;
- lineno = saved_lineno;
-
- /* Register exception specified by the `throws' keyword for
- resolution and set the method decl appropriate field to the list.
- Note: the grammar ensures that what we get here are class
- types. */
- if (throws)
- {
- throws = nreverse (throws);
- for (current = throws; current; current = TREE_CHAIN (current))
- {
- register_incomplete_type (JDEP_EXCEPTION, TREE_VALUE (current),
- NULL_TREE, NULL_TREE);
- JDEP_GET_PATCH (CLASSD_LAST (ctxp->classd_list)) =
- &TREE_VALUE (current);
- }
- DECL_FUNCTION_THROWS (meth) = throws;
- }
-
- if (TREE_TYPE (GET_CPC ()) != object_type_node)
- DECL_FUNCTION_WFL (meth) = id;
-
- /* Set the flag if we correctly processed a constructor */
- if (constructor_ok)
- {
- DECL_CONSTRUCTOR_P (meth) = 1;
- /* Compute and store the number of artificial parameters declared
- for this constructor */
- for (count = 0, current = TYPE_FIELDS (this_class); current;
- current = TREE_CHAIN (current))
- if (FIELD_LOCAL_ALIAS (current))
- count++;
- DECL_FUNCTION_NAP (meth) = count;
- }
-
- /* Eventually set the @deprecated tag flag */
- CHECK_DEPRECATED (meth);
-
- /* If doing xref, store column and line number information instead
- of the line number only. */
- if (flag_emit_xref)
- DECL_SOURCE_LINE (meth) = EXPR_WFL_LINECOL (id);
-
- return meth;
-}
-
-static void
-fix_method_argument_names (orig_arg, meth)
- tree orig_arg, meth;
-{
- tree arg = TYPE_ARG_TYPES (TREE_TYPE (meth));
- if (TREE_CODE (TREE_TYPE (meth)) == METHOD_TYPE)
- {
- TREE_PURPOSE (arg) = this_identifier_node;
- arg = TREE_CHAIN (arg);
- }
- while (orig_arg != end_params_node)
- {
- TREE_PURPOSE (arg) = TREE_PURPOSE (orig_arg);
- orig_arg = TREE_CHAIN (orig_arg);
- arg = TREE_CHAIN (arg);
- }
-}
-
-/* Complete the method declaration with METHOD_BODY. */
-
-static void
-finish_method_declaration (method_body)
- tree method_body;
-{
- int flags;
-
- if (!current_function_decl)
- return;
-
- flags = get_access_flags_from_decl (current_function_decl);
-
- /* 8.4.5 Method Body */
- if ((flags & ACC_ABSTRACT || flags & ACC_NATIVE) && method_body)
- {
- tree name = DECL_NAME (current_function_decl);
- parse_error_context (DECL_FUNCTION_WFL (current_function_decl),
- "%s method `%s' can't have a body defined",
- (METHOD_NATIVE (current_function_decl) ?
- "Native" : "Abstract"),
- IDENTIFIER_POINTER (name));
- method_body = NULL_TREE;
- }
- else if (!(flags & ACC_ABSTRACT) && !(flags & ACC_NATIVE) && !method_body)
- {
- tree name = DECL_NAME (current_function_decl);
- parse_error_context
- (DECL_FUNCTION_WFL (current_function_decl),
- "Non native and non abstract method `%s' must have a body defined",
- IDENTIFIER_POINTER (name));
- method_body = NULL_TREE;
- }
-
- if (flag_emit_class_files && method_body
- && TREE_CODE (method_body) == NOP_EXPR
- && TREE_TYPE (current_function_decl)
- && TREE_TYPE (TREE_TYPE (current_function_decl)) == void_type_node)
- method_body = build1 (RETURN_EXPR, void_type_node, NULL);
-
- BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (current_function_decl)) = method_body;
- maybe_absorb_scoping_blocks ();
- /* Exit function's body */
- exit_block ();
- /* Merge last line of the function with first line, directly in the
- function decl. It will be used to emit correct debug info. */
- if (!flag_emit_xref)
- DECL_SOURCE_LINE_MERGE (current_function_decl, ctxp->last_ccb_indent1);
-
- /* Since function's argument's list are shared, reset the
- ARG_FINAL_P parameter that might have been set on some of this
- function parameters. */
- UNMARK_FINAL_PARMS (current_function_decl);
-
- /* So we don't have an irrelevant function declaration context for
- the next static block we'll see. */
- current_function_decl = NULL_TREE;
-}
-
-/* Build a an error message for constructor circularity errors. */
-
-static char *
-constructor_circularity_msg (from, to)
- tree from, to;
-{
- static char string [4096];
- char *t = xstrdup (lang_printable_name (from, 0));
- sprintf (string, "`%s' invokes `%s'", t, lang_printable_name (to, 0));
- free (t);
- return string;
-}
-
-/* Verify a circular call to METH. Return 1 if an error is found, 0
- otherwise. */
-
-static int
-verify_constructor_circularity (meth, current)
- tree meth, current;
-{
- static tree list = NULL_TREE;
- static int initialized_p;
- tree c;
-
- /* If we haven't already registered LIST with the garbage collector,
- do so now. */
- if (!initialized_p)
- {
- ggc_add_tree_root (&list, 1);
- initialized_p = 1;
- }
-
- for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c))
- {
- if (TREE_VALUE (c) == meth)
- {
- char *t;
- if (list)
- {
- tree liste;
- list = nreverse (list);
- for (liste = list; liste; liste = TREE_CHAIN (liste))
- {
- parse_error_context
- (TREE_PURPOSE (TREE_PURPOSE (liste)), "%s",
- constructor_circularity_msg
- (TREE_VALUE (liste), TREE_VALUE (TREE_PURPOSE (liste))));
- java_error_count--;
- }
- }
- t = xstrdup (lang_printable_name (meth, 0));
- parse_error_context (TREE_PURPOSE (c),
- "%s: recursive invocation of constructor `%s'",
- constructor_circularity_msg (current, meth), t);
- free (t);
- list = NULL_TREE;
- return 1;
- }
- }
- for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c))
- {
- list = tree_cons (c, current, list);
- if (verify_constructor_circularity (meth, TREE_VALUE (c)))
- return 1;
- list = TREE_CHAIN (list);
- }
- return 0;
-}
-
-/* Check modifiers that can be declared but exclusively */
-
-static void
-check_modifiers_consistency (flags)
- int flags;
-{
- int acc_count = 0;
- tree cl = NULL_TREE;
-
- THIS_MODIFIER_ONLY (flags, ACC_PUBLIC, PUBLIC_TK, acc_count, cl);
- THIS_MODIFIER_ONLY (flags, ACC_PRIVATE, PRIVATE_TK, acc_count, cl);
- THIS_MODIFIER_ONLY (flags, ACC_PROTECTED, PROTECTED_TK, acc_count, cl);
- if (acc_count > 1)
- parse_error_context
- (cl, "Inconsistent member declaration. At most one of `public', `private', or `protected' may be specified");
-
- acc_count = 0;
- cl = NULL_TREE;
- THIS_MODIFIER_ONLY (flags, ACC_FINAL, FINAL_TK, acc_count, cl);
- THIS_MODIFIER_ONLY (flags, ACC_VOLATILE, VOLATILE_TK, acc_count, cl);
- if (acc_count > 1)
- parse_error_context (cl,
- "Inconsistent member declaration. At most one of `final' or `volatile' may be specified");
-}
-
-/* Check the methode header METH for abstract specifics features */
-
-static void
-check_abstract_method_header (meth)
- tree meth;
-{
- int flags = get_access_flags_from_decl (meth);
-
- OBSOLETE_MODIFIER_WARNING2 (MODIFIER_WFL (ABSTRACT_TK), flags,
- ACC_ABSTRACT, "abstract method",
- IDENTIFIER_POINTER (DECL_NAME (meth)));
- OBSOLETE_MODIFIER_WARNING2 (MODIFIER_WFL (PUBLIC_TK), flags,
- ACC_PUBLIC, "abstract method",
- IDENTIFIER_POINTER (DECL_NAME (meth)));
-
- check_modifiers ("Illegal modifier `%s' for interface method",
- flags, INTERFACE_METHOD_MODIFIERS);
-}
-
-/* Create a FUNCTION_TYPE node and start augmenting it with the
- declared function arguments. Arguments type that can't be resolved
- are left as they are, but the returned node is marked as containing
- incomplete types. */
-
-static tree
-method_declarator (id, list)
- tree id, list;
-{
- tree arg_types = NULL_TREE, current, node;
- tree meth = make_node (FUNCTION_TYPE);
- jdep *jdep;
-
- patch_stage = JDEP_NO_PATCH;
-
- if (GET_CPC () == error_mark_node)
- return error_mark_node;
-
- /* If we're dealing with an inner class constructor, we hide the
- this$<n> decl in the name field of its parameter declaration. We
- also might have to hide the outer context local alias
- initializers. Not done when the class is a toplevel class. */
- if (PURE_INNER_CLASS_DECL_P (GET_CPC ())
- && EXPR_WFL_NODE (id) == GET_CPC_UN ())
- {
- tree aliases_list, type, thisn;
- /* First the aliases, linked to the regular parameters */
- aliases_list =
- build_alias_initializer_parameter_list (AIPL_FUNCTION_DECLARATION,
- TREE_TYPE (GET_CPC ()),
- NULL_TREE, NULL);
- list = chainon (nreverse (aliases_list), list);
-
- /* Then this$<n> */
- type = TREE_TYPE (DECL_CONTEXT (GET_CPC ()));
- thisn = build_current_thisn (TREE_TYPE (GET_CPC ()));
- list = tree_cons (build_wfl_node (thisn), build_pointer_type (type),
- list);
- }
-
- for (current = list; current; current = TREE_CHAIN (current))
- {
- int must_chain = 0;
- tree wfl_name = TREE_PURPOSE (current);
- tree type = TREE_VALUE (current);
- tree name = EXPR_WFL_NODE (wfl_name);
- tree already, arg_node;
- tree type_wfl = NULL_TREE;
- tree real_type;
-
- /* Obtain a suitable type for resolution, if necessary */
- SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);
-
- /* Process NAME, as it may specify extra dimension(s) for it */
- type = build_array_from_name (type, type_wfl, name, &name);
- EXPR_WFL_NODE (wfl_name) = name;
-
- real_type = GET_REAL_TYPE (type);
- if (TREE_CODE (real_type) == RECORD_TYPE)
- {
- real_type = promote_type (real_type);
- if (TREE_CODE (type) == TREE_LIST)
- TREE_PURPOSE (type) = real_type;
- }
-
- /* Check redefinition */
- for (already = arg_types; already; already = TREE_CHAIN (already))
- if (TREE_PURPOSE (already) == name)
- {
- parse_error_context
- (wfl_name, "Variable `%s' is used more than once in the argument list of method `%s'",
- IDENTIFIER_POINTER (name),
- IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
- break;
- }
-
- /* If we've an incomplete argument type, we know there is a location
- to patch when the type get resolved, later. */
- jdep = NULL;
- if (must_chain)
- {
- patch_stage = JDEP_METHOD;
- type = register_incomplete_type (patch_stage,
- type_wfl, wfl_name, type);
- jdep = CLASSD_LAST (ctxp->classd_list);
- JDEP_MISC (jdep) = id;
- }
-
- /* The argument node: a name and a (possibly) incomplete type. */
- arg_node = build_tree_list (name, real_type);
- /* Remeber arguments declared final. */
- ARG_FINAL_P (arg_node) = ARG_FINAL_P (current);
-
- if (jdep)
- JDEP_GET_PATCH (jdep) = &TREE_VALUE (arg_node);
- TREE_CHAIN (arg_node) = arg_types;
- arg_types = arg_node;
- }
- TYPE_ARG_TYPES (meth) = chainon (nreverse (arg_types), end_params_node);
- node = build_tree_list (id, meth);
- return node;
-}
-
-static int
-unresolved_type_p (wfl, returned)
- tree wfl;
- tree *returned;
-
-{
- if (TREE_CODE (wfl) == EXPR_WITH_FILE_LOCATION)
- {
- if (returned)
- {
- tree decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (wfl));
- if (decl && current_class && (decl == TYPE_NAME (current_class)))
- *returned = TREE_TYPE (decl);
- else if (GET_CPC_UN () == EXPR_WFL_NODE (wfl))
- *returned = TREE_TYPE (GET_CPC ());
- else
- *returned = NULL_TREE;
- }
- return 1;
- }
- if (returned)
- *returned = wfl;
- return 0;
-}
-
-/* From NAME, build a qualified identifier node using the
- qualification from the current package definition. */
-
-static tree
-parser_qualified_classname (name)
- tree name;
-{
- tree nested_class_name;
-
- if ((nested_class_name = maybe_make_nested_class_name (name)))
- return nested_class_name;
-
- if (ctxp->package)
- return merge_qualified_name (ctxp->package, name);
- else
- return name;
-}
-
-/* Called once the type a interface extends is resolved. Returns 0 if
- everything is OK. */
-
-static int
-parser_check_super_interface (super_decl, this_decl, this_wfl)
- tree super_decl, this_decl, this_wfl;
-{
- tree super_type = TREE_TYPE (super_decl);
-
- /* Has to be an interface */
- if (!CLASS_INTERFACE (super_decl))
- {
- parse_error_context
- (this_wfl, "%s `%s' can't implement/extend %s `%s'",
- (CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (this_decl))) ?
- "Interface" : "Class"),
- IDENTIFIER_POINTER (DECL_NAME (this_decl)),
- (TYPE_ARRAY_P (super_type) ? "array" : "class"),
- IDENTIFIER_POINTER (DECL_NAME (super_decl)));
- return 1;
- }
-
- /* Check top-level interface access. Inner classes are subject to member
- access rules (6.6.1). */
- if (! INNER_CLASS_P (super_type)
- && check_pkg_class_access (DECL_NAME (super_decl),
- lookup_cl (this_decl), true))
- return 1;
-
- SOURCE_FRONTEND_DEBUG (("Completing interface %s with %s",
- IDENTIFIER_POINTER (DECL_NAME (this_decl)),
- IDENTIFIER_POINTER (DECL_NAME (super_decl))));
- return 0;
-}
-
-/* Makes sure that SUPER_DECL is suitable to extend THIS_DECL. Returns
- 0 if everthing is OK. */
-
-static int
-parser_check_super (super_decl, this_decl, wfl)
- tree super_decl, this_decl, wfl;
-{
- tree super_type = TREE_TYPE (super_decl);
-
- /* SUPER should be a CLASS (neither an array nor an interface) */
- if (TYPE_ARRAY_P (super_type) || CLASS_INTERFACE (TYPE_NAME (super_type)))
- {
- parse_error_context
- (wfl, "Class `%s' can't subclass %s `%s'",
- IDENTIFIER_POINTER (DECL_NAME (this_decl)),
- (CLASS_INTERFACE (TYPE_NAME (super_type)) ? "interface" : "array"),
- IDENTIFIER_POINTER (DECL_NAME (super_decl)));
- return 1;
- }
-
- if (CLASS_FINAL (TYPE_NAME (super_type)))
- {
- parse_error_context (wfl, "Can't subclass final classes: %s",
- IDENTIFIER_POINTER (DECL_NAME (super_decl)));
- return 1;
- }
-
- /* Check top-level class scope. Inner classes are subject to member access
- rules (6.6.1). */
- if (! INNER_CLASS_P (super_type)
- && (check_pkg_class_access (DECL_NAME (super_decl), wfl, true)))
- return 1;
-
- SOURCE_FRONTEND_DEBUG (("Completing class %s with %s",
- IDENTIFIER_POINTER (DECL_NAME (this_decl)),
- IDENTIFIER_POINTER (DECL_NAME (super_decl))));
- return 0;
-}
-
-/* Create a new dependency list and link it (in a LIFO manner) to the
- CTXP list of type dependency list. */
-
-static void
-create_jdep_list (ctxp)
- struct parser_ctxt *ctxp;
-{
- jdeplist *new = (jdeplist *)xmalloc (sizeof (jdeplist));
- new->first = new->last = NULL;
- new->next = ctxp->classd_list;
- ctxp->classd_list = new;
-}
-
-static jdeplist *
-reverse_jdep_list (ctxp)
- struct parser_ctxt *ctxp;
-{
- register jdeplist *prev = NULL, *current, *next;
- for (current = ctxp->classd_list; current; current = next)
- {
- next = current->next;
- current->next = prev;
- prev = current;
- }
- return prev;
-}
-
-/* Create a fake pointer based on the ID stored in
- TYPE_NAME. TYPE_NAME can be a WFL or a incomplete type asking to be
- registered again. */
-
-static tree
-obtain_incomplete_type (type_name)
- tree type_name;
-{
- tree ptr = NULL_TREE, name;
-
- if (TREE_CODE (type_name) == EXPR_WITH_FILE_LOCATION)
- name = EXPR_WFL_NODE (type_name);
- else if (INCOMPLETE_TYPE_P (type_name))
- name = TYPE_NAME (type_name);
- else
- abort ();
-
- BUILD_PTR_FROM_NAME (ptr, name);
- layout_type (ptr);
-
- return ptr;
-}
-
-/* Register a incomplete type whose name is WFL. Reuse PTR if PTR is
- non NULL instead of computing a new fake type based on WFL. The new
- dependency is inserted in the current type dependency list, in FIFO
- manner. */
-
-static tree
-register_incomplete_type (kind, wfl, decl, ptr)
- int kind;
- tree wfl, decl, ptr;
-{
- jdep *new = (jdep *)xmalloc (sizeof (jdep));
-
- if (!ptr && kind != JDEP_METHOD_END) /* JDEP_METHOD_END is a mere marker */
- ptr = obtain_incomplete_type (wfl);
-
- JDEP_KIND (new) = kind;
- JDEP_DECL (new) = decl;
- JDEP_TO_RESOLVE (new) = ptr;
- JDEP_WFL (new) = wfl;
- JDEP_CHAIN (new) = NULL;
- JDEP_MISC (new) = NULL_TREE;
- /* For some dependencies, set the enclosing class of the current
- class to be the enclosing context */
- if ((kind == JDEP_INTERFACE || kind == JDEP_ANONYMOUS)
- && GET_ENCLOSING_CPC ())
- JDEP_ENCLOSING (new) = TREE_VALUE (GET_ENCLOSING_CPC ());
- else if (kind == JDEP_SUPER)
- JDEP_ENCLOSING (new) = (GET_ENCLOSING_CPC () ?
- TREE_VALUE (GET_ENCLOSING_CPC ()) : NULL_TREE);
- else
- JDEP_ENCLOSING (new) = GET_CPC ();
- JDEP_GET_PATCH (new) = (tree *)NULL;
-
- JDEP_INSERT (ctxp->classd_list, new);
-
- return ptr;
-}
-
-/* This checks for circular references with innerclasses. We start
- from SOURCE and should never reach TARGET. Extended/implemented
- types in SOURCE have their enclosing context checked not to reach
- TARGET. When the last enclosing context of SOURCE is reached, its
- extended/implemented types are also checked not to reach TARGET.
- In case of error, WFL of the offending type is returned; NULL_TREE
- otherwise. */
-
-static tree
-check_inner_circular_reference (source, target)
- tree source;
- tree target;
-{
- tree basetype_vec = TYPE_BINFO_BASETYPES (source);
- tree ctx, cl;
- int i;
-
- if (!basetype_vec)
- return NULL_TREE;
-
- for (i = 0; i < TREE_VEC_LENGTH (basetype_vec); i++)
- {
- tree su;
-
- /* We can end up with a NULL_TREE or an incomplete type here if
- we encountered previous type resolution errors. It's safe to
- simply ignore these cases. */
- if (TREE_VEC_ELT (basetype_vec, i) == NULL_TREE)
- continue;
- su = BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i));
- if (INCOMPLETE_TYPE_P (su))
- continue;
-
- if (inherits_from_p (su, target))
- return lookup_cl (TYPE_NAME (su));
-
- for (ctx = DECL_CONTEXT (TYPE_NAME (su)); ctx; ctx = DECL_CONTEXT (ctx))
- {
- /* An enclosing context shouldn't be TARGET */
- if (ctx == TYPE_NAME (target))
- return lookup_cl (TYPE_NAME (su));
-
- /* When we reach the enclosing last context, start a check
- on it, with the same target */
- if (! DECL_CONTEXT (ctx) &&
- (cl = check_inner_circular_reference (TREE_TYPE (ctx), target)))
- return cl;
- }
- }
- return NULL_TREE;
-}
-
-/* Explore TYPE's `extends' clause member(s) and return the WFL of the
- offending type if a circularity is detected. NULL_TREE is returned
- otherwise. TYPE can be an interface or a class. */
-
-static tree
-check_circular_reference (type)
- tree type;
-{
- tree basetype_vec = TYPE_BINFO_BASETYPES (type);
- int i;
-
- if (!basetype_vec)
- return NULL_TREE;
-
- if (! CLASS_INTERFACE (TYPE_NAME (type)))
- {
- if (inherits_from_p (CLASSTYPE_SUPER (type), type))
- return lookup_cl (TYPE_NAME (type));
- return NULL_TREE;
- }
-
- for (i = 0; i < TREE_VEC_LENGTH (basetype_vec); i++)
- {
- tree vec_elt = TREE_VEC_ELT (basetype_vec, i);
- if (vec_elt && BINFO_TYPE (vec_elt) != object_type_node
- && interface_of_p (type, BINFO_TYPE (vec_elt)))
- return lookup_cl (TYPE_NAME (BINFO_TYPE (vec_elt)));
- }
- return NULL_TREE;
-}
-
-void
-java_check_circular_reference ()
-{
- tree current;
- for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
- {
- tree type = TREE_TYPE (current);
- tree cl;
-
- cl = check_circular_reference (type);
- if (! cl)
- cl = check_inner_circular_reference (type, type);
- if (cl)
- parse_error_context (cl, "Cyclic class inheritance%s",
- (cyclic_inheritance_report ?
- cyclic_inheritance_report : ""));
- }
-}
-
-/* Augment the parameter list PARM with parameters crafted to
- initialize outer context locals aliases. Through ARTIFICIAL, a
- count is kept of the number of crafted parameters. MODE governs
- what eventually gets created: something suitable for a function
- creation or a function invocation, either the constructor or
- finit$. */
-
-static tree
-build_alias_initializer_parameter_list (mode, class_type, parm, artificial)
- int mode;
- tree class_type, parm;
- int *artificial;
-{
- tree field;
- tree additional_parms = NULL_TREE;
-
- for (field = TYPE_FIELDS (class_type); field; field = TREE_CHAIN (field))
- if (FIELD_LOCAL_ALIAS (field))
- {
- const char *buffer = IDENTIFIER_POINTER (DECL_NAME (field));
- tree purpose = NULL_TREE, value = NULL_TREE, name = NULL_TREE;
- tree mangled_id;
-
- switch (mode)
- {
- case AIPL_FUNCTION_DECLARATION:
- MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (mangled_id,
- &buffer [4]);
- purpose = build_wfl_node (mangled_id);
- if (TREE_CODE (TREE_TYPE (field)) == POINTER_TYPE)
- value = build_wfl_node (TYPE_NAME (TREE_TYPE (field)));
- else
- value = TREE_TYPE (field);
- break;
-
- case AIPL_FUNCTION_CREATION:
- MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (purpose,
- &buffer [4]);
- value = TREE_TYPE (field);
- break;
-
- case AIPL_FUNCTION_FINIT_INVOCATION:
- MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (mangled_id,
- &buffer [4]);
- /* Now, this is wrong. purpose should always be the NAME
- of something and value its matching value (decl, type,
- etc...) FIXME -- but there is a lot to fix. */
-
- /* When invoked for this kind of operation, we already
- know whether a field is used or not. */
- purpose = TREE_TYPE (field);
- value = build_wfl_node (mangled_id);
- break;
-
- case AIPL_FUNCTION_CTOR_INVOCATION:
- /* There are two case: the constructor invokation happends
- outside the local inner, in which case, locales from the outer
- context are directly used.
-
- Otherwise, we fold to using the alias directly. */
- if (class_type == current_class)
- value = field;
- else
- {
- name = get_identifier (&buffer[4]);
- value = IDENTIFIER_LOCAL_VALUE (name);
- }
- break;
- }
- additional_parms = tree_cons (purpose, value, additional_parms);
- if (artificial)
- *artificial +=1;
- }
- if (additional_parms)
- {
- if (ANONYMOUS_CLASS_P (class_type)
- && mode == AIPL_FUNCTION_CTOR_INVOCATION)
- additional_parms = nreverse (additional_parms);
- parm = chainon (additional_parms, parm);
- }
-
- return parm;
-}
-
-/* Craft a constructor for CLASS_DECL -- what we should do when none
- where found. ARGS is non NULL when a special signature must be
- enforced. This is the case for anonymous classes. */
-
-static tree
-craft_constructor (class_decl, args)
- tree class_decl, args;
-{
- tree class_type = TREE_TYPE (class_decl);
- tree parm = NULL_TREE;
- int flags = (get_access_flags_from_decl (class_decl) & ACC_PUBLIC ?
- ACC_PUBLIC : 0);
- int i = 0, artificial = 0;
- tree decl, ctor_name;
- char buffer [80];
-
- /* The constructor name is <init> unless we're dealing with an
- anonymous class, in which case the name will be fixed after having
- be expanded. */
- if (ANONYMOUS_CLASS_P (class_type))
- ctor_name = DECL_NAME (class_decl);
- else
- ctor_name = init_identifier_node;
-
- /* If we're dealing with an inner class constructor, we hide the
- this$<n> decl in the name field of its parameter declaration. */
- if (PURE_INNER_CLASS_TYPE_P (class_type))
- {
- tree type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class_type)));
- parm = tree_cons (build_current_thisn (class_type),
- build_pointer_type (type), parm);
-
- /* Some more arguments to be hidden here. The values of the local
- variables of the outer context that the inner class needs to see. */
- parm = build_alias_initializer_parameter_list (AIPL_FUNCTION_CREATION,
- class_type, parm,
- &artificial);
- }
-
- /* Then if there are any args to be enforced, enforce them now */
- for (; args && args != end_params_node; args = TREE_CHAIN (args))
- {
- sprintf (buffer, "parm%d", i++);
- parm = tree_cons (get_identifier (buffer), TREE_VALUE (args), parm);
- }
-
- CRAFTED_PARAM_LIST_FIXUP (parm);
- decl = create_artificial_method (class_type, flags, void_type_node,
- ctor_name, parm);
- fix_method_argument_names (parm, decl);
- /* Now, mark the artificial parameters. */
- DECL_FUNCTION_NAP (decl) = artificial;
- DECL_FUNCTION_SYNTHETIC_CTOR (decl) = DECL_CONSTRUCTOR_P (decl) = 1;
- return decl;
-}
-
-
-/* Fix the constructors. This will be called right after circular
- references have been checked. It is necessary to fix constructors
- early even if no code generation will take place for that class:
- some generated constructor might be required by the class whose
- compilation triggered this one to be simply loaded. */
-
-void
-java_fix_constructors ()
-{
- tree current;
-
- for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
- {
- tree class_type = TREE_TYPE (current);
- int saw_ctor = 0;
- tree decl;
-
- if (CLASS_INTERFACE (TYPE_NAME (class_type)))
- continue;
-
- current_class = class_type;
- for (decl = TYPE_METHODS (class_type); decl; decl = TREE_CHAIN (decl))
- {
- if (DECL_CONSTRUCTOR_P (decl))
- {
- fix_constructors (decl);
- saw_ctor = 1;
- }
- }
-
- /* Anonymous class constructor can't be generated that early. */
- if (!saw_ctor && !ANONYMOUS_CLASS_P (class_type))
- craft_constructor (current, NULL_TREE);
- }
-}
-
-/* safe_layout_class just makes sure that we can load a class without
- disrupting the current_class, input_file, lineno, etc, information
- about the class processed currently. */
-
-void
-safe_layout_class (class)
- tree class;
-{
- tree save_current_class = current_class;
- const char *save_input_filename = input_filename;
- int save_lineno = lineno;
-
- layout_class (class);
-
- current_class = save_current_class;
- input_filename = save_input_filename;
- lineno = save_lineno;
-}
-
-static tree
-jdep_resolve_class (dep)
- jdep *dep;
-{
- tree decl;
-
- if (JDEP_RESOLVED_P (dep))
- decl = JDEP_RESOLVED_DECL (dep);
- else
- {
- decl = resolve_class (JDEP_ENCLOSING (dep), JDEP_TO_RESOLVE (dep),
- JDEP_DECL (dep), JDEP_WFL (dep));
- JDEP_RESOLVED (dep, decl);
- }
-
- if (!decl)
- complete_class_report_errors (dep);
- else if (PURE_INNER_CLASS_DECL_P (decl))
- {
- tree inner = TREE_TYPE (decl);
- if (! CLASS_LOADED_P (inner))
- {
- safe_layout_class (inner);
- if (TYPE_SIZE (inner) == error_mark_node)
- TYPE_SIZE (inner) = NULL_TREE;
- }
- check_inner_class_access (decl, JDEP_ENCLOSING (dep), JDEP_WFL (dep));
- }
- return decl;
-}
-
-/* Complete unsatisfied class declaration and their dependencies */
-
-void
-java_complete_class ()
-{
- tree cclass;
- jdeplist *cclassd;
- int error_found;
- tree type;
-
- /* Process imports */
- process_imports ();
-
- /* Rever things so we have the right order */
- ctxp->class_list = nreverse (ctxp->class_list);
- ctxp->classd_list = reverse_jdep_list (ctxp);
-
- for (cclassd = ctxp->classd_list, cclass = ctxp->class_list;
- cclass && cclassd;
- cclass = TREE_CHAIN (cclass), cclassd = CLASSD_CHAIN (cclassd))
- {
- jdep *dep;
-
- /* We keep the compilation unit imports in the class so that
- they can be used later to resolve type dependencies that
- aren't necessary to solve now. */
- TYPE_IMPORT_LIST (TREE_TYPE (cclass)) = ctxp->import_list;
- TYPE_IMPORT_DEMAND_LIST (TREE_TYPE (cclass)) = ctxp->import_demand_list;
-
- for (dep = CLASSD_FIRST (cclassd); dep; dep = JDEP_CHAIN (dep))
- {
- tree decl;
- if (!(decl = jdep_resolve_class (dep)))
- continue;
-
- /* Now it's time to patch */
- switch (JDEP_KIND (dep))
- {
- case JDEP_SUPER:
- /* Simply patch super */
- if (parser_check_super (decl, JDEP_DECL (dep), JDEP_WFL (dep)))
- continue;
- BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO
- (TREE_TYPE (JDEP_DECL (dep)))), 0)) = TREE_TYPE (decl);
- break;
-
- case JDEP_FIELD:
- {
- /* We do part of the job done in add_field */
- tree field_decl = JDEP_DECL (dep);
- tree field_type = TREE_TYPE (decl);
- if (TREE_CODE (field_type) == RECORD_TYPE)
- field_type = promote_type (field_type);
- TREE_TYPE (field_decl) = field_type;
- DECL_ALIGN (field_decl) = 0;
- DECL_USER_ALIGN (field_decl) = 0;
- layout_decl (field_decl, 0);
- SOURCE_FRONTEND_DEBUG
- (("Completed field/var decl `%s' with `%s'",
- IDENTIFIER_POINTER (DECL_NAME (field_decl)),
- IDENTIFIER_POINTER (DECL_NAME (decl))));
- break;
- }
- case JDEP_METHOD: /* We start patching a method */
- case JDEP_METHOD_RETURN:
- error_found = 0;
- while (1)
- {
- if (decl)
- {
- type = TREE_TYPE(decl);
- if (TREE_CODE (type) == RECORD_TYPE)
- type = promote_type (type);
- JDEP_APPLY_PATCH (dep, type);
- SOURCE_FRONTEND_DEBUG
- (((JDEP_KIND (dep) == JDEP_METHOD_RETURN ?
- "Completing fct `%s' with ret type `%s'":
- "Completing arg `%s' with type `%s'"),
- IDENTIFIER_POINTER (EXPR_WFL_NODE
- (JDEP_DECL_WFL (dep))),
- IDENTIFIER_POINTER (DECL_NAME (decl))));
- }
- else
- error_found = 1;
- dep = JDEP_CHAIN (dep);
- if (JDEP_KIND (dep) == JDEP_METHOD_END)
- break;
- else
- decl = jdep_resolve_class (dep);
- }
- if (!error_found)
- {
- tree mdecl = JDEP_DECL (dep), signature;
- /* Recompute and reset the signature, check first that
- all types are now defined. If they're not,
- don't build the signature. */
- if (check_method_types_complete (mdecl))
- {
- signature = build_java_signature (TREE_TYPE (mdecl));
- set_java_signature (TREE_TYPE (mdecl), signature);
- }
- }
- else
- continue;
- break;
-
- case JDEP_INTERFACE:
- if (parser_check_super_interface (decl, JDEP_DECL (dep),
- JDEP_WFL (dep)))
- continue;
- parser_add_interface (JDEP_DECL (dep), decl, JDEP_WFL (dep));
- break;
-
- case JDEP_PARM:
- case JDEP_VARIABLE:
- type = TREE_TYPE(decl);
- if (TREE_CODE (type) == RECORD_TYPE)
- type = promote_type (type);
- JDEP_APPLY_PATCH (dep, type);
- break;
-
- case JDEP_TYPE:
- JDEP_APPLY_PATCH (dep, TREE_TYPE (decl));
- SOURCE_FRONTEND_DEBUG
- (("Completing a random type dependency on a '%s' node",
- tree_code_name [TREE_CODE (JDEP_DECL (dep))]));
- break;
-
- case JDEP_EXCEPTION:
- JDEP_APPLY_PATCH (dep, TREE_TYPE (decl));
- SOURCE_FRONTEND_DEBUG
- (("Completing `%s' `throws' argument node",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)))));
- break;
-
- case JDEP_ANONYMOUS:
- patch_anonymous_class (decl, JDEP_DECL (dep), JDEP_WFL (dep));
- break;
-
- default:
- abort ();
- }
- }
- }
- return;
-}
-
-/* Resolve class CLASS_TYPE. Handle the case of trying to resolve an
- array. */
-
-static tree
-resolve_class (enclosing, class_type, decl, cl)
- tree enclosing, class_type, decl, cl;
-{
- tree tname = TYPE_NAME (class_type);
- tree resolved_type = TREE_TYPE (class_type);
- int array_dims = 0;
- tree resolved_type_decl;
-
- if (resolved_type != NULL_TREE)
- {
- tree resolved_type_decl = TYPE_NAME (resolved_type);
- if (resolved_type_decl == NULL_TREE
- || TREE_CODE (resolved_type_decl) == IDENTIFIER_NODE)
- {
- resolved_type_decl = build_decl (TYPE_DECL,
- TYPE_NAME (class_type),
- resolved_type);
- }
- return resolved_type_decl;
- }
-
- /* 1- Check to see if we have an array. If true, find what we really
- want to resolve */
- if ((array_dims = build_type_name_from_array_name (tname,
- &TYPE_NAME (class_type))))
- WFL_STRIP_BRACKET (cl, cl);
-
- /* 2- Resolve the bare type */
- if (!(resolved_type_decl = do_resolve_class (enclosing, class_type,
- decl, cl)))
- return NULL_TREE;
- resolved_type = TREE_TYPE (resolved_type_decl);
-
- /* 3- If we have and array, reconstruct the array down to its nesting */
- if (array_dims)
- {
- for (; array_dims; array_dims--)
- resolved_type = build_java_array_type (resolved_type, -1);
- resolved_type_decl = TYPE_NAME (resolved_type);
- }
- TREE_TYPE (class_type) = resolved_type;
- return resolved_type_decl;
-}
-
-/* Effectively perform the resolution of class CLASS_TYPE. DECL or CL
- are used to report error messages. Do not try to replace TYPE_NAME
- (class_type) by a variable, since it is changed by
- find_in_imports{_on_demand} and (but it doesn't really matter)
- qualify_and_find. */
-
-tree
-do_resolve_class (enclosing, class_type, decl, cl)
- tree enclosing, class_type, decl, cl;
-{
- tree new_class_decl = NULL_TREE, super = NULL_TREE;
- tree saved_enclosing_type = enclosing ? TREE_TYPE (enclosing) : NULL_TREE;
- tree decl_result;
- struct hash_table _ht, *circularity_hash = &_ht;
-
- /* This hash table is used to register the classes we're going
- through when searching the current class as an inner class, in
- order to detect circular references. Remember to free it before
- returning the section 0- of this function. */
- hash_table_init (circularity_hash, hash_newfunc,
- java_hash_hash_tree_node, java_hash_compare_tree_node);
-
- /* 0- Search in the current class as an inner class.
- Maybe some code here should be added to load the class or
- something, at least if the class isn't an inner class and ended
- being loaded from class file. FIXME. */
- while (enclosing)
- {
- new_class_decl = resolve_inner_class (circularity_hash, cl, &enclosing,
- &super, class_type);
- if (new_class_decl)
- break;
-
- /* If we haven't found anything because SUPER reached Object and
- ENCLOSING happens to be an innerclass, try the enclosing context. */
- if ((!super || super == object_type_node) &&
- enclosing && INNER_CLASS_DECL_P (enclosing))
- enclosing = DECL_CONTEXT (enclosing);
- else
- enclosing = NULL_TREE;
- }
-
- hash_table_free (circularity_hash);
-
- if (new_class_decl)
- return new_class_decl;
-
- /* 1- Check for the type in single imports. This will change
- TYPE_NAME() if something relevant is found */
- find_in_imports (saved_enclosing_type, class_type);
-
- /* 2- And check for the type in the current compilation unit */
- if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type))))
- {
- if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) &&
- !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl)))
- load_class (TYPE_NAME (class_type), 0);
- return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
- }
-
- /* 3- Search according to the current package definition */
- if (!QUALIFIED_P (TYPE_NAME (class_type)))
- {
- if ((new_class_decl = qualify_and_find (class_type, ctxp->package,
- TYPE_NAME (class_type))))
- return new_class_decl;
- }
-
- /* 4- Check the import on demands. Don't allow bar.baz to be
- imported from foo.* */
- if (!QUALIFIED_P (TYPE_NAME (class_type)))
- if (find_in_imports_on_demand (saved_enclosing_type, class_type))
- return NULL_TREE;
-
- /* If found in find_in_imports_on_demant, the type has already been
- loaded. */
- if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type))))
- return new_class_decl;
-
- /* 5- Try with a name qualified with the package name we've seen so far */
- if (!QUALIFIED_P (TYPE_NAME (class_type)))
- {
- tree package;
-
- /* If there is a current package (ctxp->package), it's the first
- element of package_list and we can skip it. */
- for (package = (ctxp->package ?
- TREE_CHAIN (package_list) : package_list);
- package; package = TREE_CHAIN (package))
- if ((new_class_decl = qualify_and_find (class_type,
- TREE_PURPOSE (package),
- TYPE_NAME (class_type))))
- return new_class_decl;
- }
-
- /* 5- Check an other compilation unit that bears the name of type */
- load_class (TYPE_NAME (class_type), 0);
-
- if (!cl)
- cl = lookup_cl (decl);
-
- /* If we don't have a value for CL, then we're being called recursively.
- We can't check package access just yet, but it will be taken care of
- by the caller. */
- if (cl)
- {
- if (check_pkg_class_access (TYPE_NAME (class_type), cl, true))
- return NULL_TREE;
- }
-
- /* 6- Last call for a resolution */
- decl_result = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
-
- /* The final lookup might have registered a.b.c into a.b$c If we
- failed at the first lookup, progressively change the name if
- applicable and use the matching DECL instead. */
- if (!decl_result && QUALIFIED_P (TYPE_NAME (class_type)))
- {
- char *separator;
- tree name = TYPE_NAME (class_type);
- char *namebuffer = alloca (IDENTIFIER_LENGTH (name) + 1);
-
- strcpy (namebuffer, IDENTIFIER_POINTER (name));
-
- do {
-
- /* Reach the last '.', and if applicable, replace it by a `$' and
- see if this exists as a type. */
- if ((separator = strrchr (namebuffer, '.')))
- {
- *separator = '$';
- name = get_identifier (namebuffer);
- decl_result = IDENTIFIER_CLASS_VALUE (name);
- }
- } while (!decl_result && separator);
- }
- return decl_result;
-}
-
-static tree
-qualify_and_find (class_type, package, name)
- tree class_type, package, name;
-{
- tree new_qualified = merge_qualified_name (package, name);
- tree new_class_decl;
-
- if (!IDENTIFIER_CLASS_VALUE (new_qualified))
- load_class (new_qualified, 0);
- if ((new_class_decl = IDENTIFIER_CLASS_VALUE (new_qualified)))
- {
- if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) &&
- !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl)))
- load_class (new_qualified, 0);
- TYPE_NAME (class_type) = new_qualified;
- return IDENTIFIER_CLASS_VALUE (new_qualified);
- }
- return NULL_TREE;
-}
-
-/* Resolve NAME and lay it out (if not done and if not the current
- parsed class). Return a decl node. This function is meant to be
- called when type resolution is necessary during the walk pass. */
-
-static tree
-resolve_and_layout (something, cl)
- tree something;
- tree cl;
-{
- tree decl, decl_type;
-
- /* Don't do that on the current class */
- if (something == current_class)
- return TYPE_NAME (current_class);
-
- /* Don't do anything for void and other primitive types */
- if (JPRIMITIVE_TYPE_P (something) || something == void_type_node)
- return NULL_TREE;
-
- /* Pointer types can be reall pointer types or fake pointers. When
- finding a real pointer, recheck for primitive types */
- if (TREE_CODE (something) == POINTER_TYPE)
- {
- if (TREE_TYPE (something))
- {
- something = TREE_TYPE (something);
- if (JPRIMITIVE_TYPE_P (something) || something == void_type_node)
- return NULL_TREE;
- }
- else
- something = TYPE_NAME (something);
- }
-
- /* Don't do anything for arrays of primitive types */
- if (TREE_CODE (something) == RECORD_TYPE && TYPE_ARRAY_P (something)
- && JPRIMITIVE_TYPE_P (TYPE_ARRAY_ELEMENT (something)))
- return NULL_TREE;
-
- /* Something might be a WFL */
- if (TREE_CODE (something) == EXPR_WITH_FILE_LOCATION)
- something = EXPR_WFL_NODE (something);
-
- /* Otherwise, if something is not and IDENTIFIER_NODE, it can be a a
- TYPE_DECL or a real TYPE */
- else if (TREE_CODE (something) != IDENTIFIER_NODE)
- something = (TREE_CODE (TYPE_NAME (something)) == TYPE_DECL ?
- DECL_NAME (TYPE_NAME (something)) : TYPE_NAME (something));
-
- if (!(decl = resolve_no_layout (something, cl)))
- return NULL_TREE;
-
- /* Resolve and layout if necessary */
- decl_type = TREE_TYPE (decl);
- layout_class_methods (decl_type);
- /* Check methods */
- if (CLASS_FROM_SOURCE_P (decl_type))
- java_check_methods (decl);
- /* Layout the type if necessary */
- if (decl_type != current_class && !CLASS_LOADED_P (decl_type))
- safe_layout_class (decl_type);
-
- return decl;
-}
-
-/* Resolve a class, returns its decl but doesn't perform any
- layout. The current parsing context is saved and restored */
-
-static tree
-resolve_no_layout (name, cl)
- tree name, cl;
-{
- tree ptr, decl;
- BUILD_PTR_FROM_NAME (ptr, name);
- java_parser_context_save_global ();
- decl = resolve_class (TYPE_NAME (current_class), ptr, NULL_TREE, cl);
- java_parser_context_restore_global ();
-
- return decl;
-}
-
-/* Called when reporting errors. Skip the '[]'s in a complex array
- type description that failed to be resolved. purify_type_name can't
- use an identifier tree. */
-
-static const char *
-purify_type_name (name)
- const char *name;
-{
- int len = strlen (name);
- int bracket_found;
-
- STRING_STRIP_BRACKETS (name, len, bracket_found);
- if (bracket_found)
- {
- char *stripped_name = xmemdup (name, len, len+1);
- stripped_name [len] = '\0';
- return stripped_name;
- }
- return name;
-}
-
-/* The type CURRENT refers to can't be found. We print error messages. */
-
-static void
-complete_class_report_errors (dep)
- jdep *dep;
-{
- const char *name;
-
- if (!JDEP_WFL (dep))
- return;
-
- name = IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)));
- switch (JDEP_KIND (dep))
- {
- case JDEP_SUPER:
- parse_error_context
- (JDEP_WFL (dep), "Superclass `%s' of class `%s' not found",
- purify_type_name (name),
- IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
- break;
- case JDEP_FIELD:
- parse_error_context
- (JDEP_WFL (dep), "Type `%s' not found in declaration of field `%s'",
- purify_type_name (name),
- IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
- break;
- case JDEP_METHOD: /* Covers arguments */
- parse_error_context
- (JDEP_WFL (dep), "Type `%s' not found in the declaration of the argument `%s' of method `%s'",
- purify_type_name (name),
- IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))),
- IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_MISC (dep))));
- break;
- case JDEP_METHOD_RETURN: /* Covers return type */
- parse_error_context
- (JDEP_WFL (dep), "Type `%s' not found in the declaration of the return type of method `%s'",
- purify_type_name (name),
- IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))));
- break;
- case JDEP_INTERFACE:
- parse_error_context
- (JDEP_WFL (dep), "Superinterface `%s' of %s `%s' not found",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))),
- (CLASS_OR_INTERFACE (JDEP_DECL (dep), "class", "interface")),
- IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
- break;
- case JDEP_VARIABLE:
- parse_error_context
- (JDEP_WFL (dep), "Type `%s' not found in the declaration of the local variable `%s'",
- purify_type_name (IDENTIFIER_POINTER
- (EXPR_WFL_NODE (JDEP_WFL (dep)))),
- IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
- break;
- case JDEP_EXCEPTION: /* As specified by `throws' */
- parse_error_context
- (JDEP_WFL (dep), "Class `%s' not found in `throws'",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))));
- break;
- default:
- /* Fix for -Wall. Just break doing nothing. The error will be
- caught later */
- break;
- }
-}
-
-/* Return a static string containing the DECL prototype string. If
- DECL is a constructor, use the class name instead of the form
- <init> */
-
-static const char *
-get_printable_method_name (decl)
- tree decl;
-{
- const char *to_return;
- tree name = NULL_TREE;
-
- if (DECL_CONSTRUCTOR_P (decl))
- {
- name = DECL_NAME (decl);
- DECL_NAME (decl) = DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)));
- }
-
- to_return = lang_printable_name (decl, 0);
- if (DECL_CONSTRUCTOR_P (decl))
- DECL_NAME (decl) = name;
-
- return to_return;
-}
-
-/* Track method being redefined inside the same class. As a side
- effect, set DECL_NAME to an IDENTIFIER (prior entering this
- function it's a FWL, so we can track errors more accurately.) */
-
-static int
-check_method_redefinition (class, method)
- tree class, method;
-{
- tree redef, sig;
-
- /* There's no need to verify <clinit> and finit$ and instinit$ */
- if (DECL_CLINIT_P (method)
- || DECL_FINIT_P (method) || DECL_INSTINIT_P (method))
- return 0;
-
- sig = TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (method));
- for (redef = TYPE_METHODS (class); redef; redef = TREE_CHAIN (redef))
- {
- if (redef == method)
- break;
- if (DECL_NAME (redef) == DECL_NAME (method)
- && sig == TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (redef))
- && !DECL_ARTIFICIAL (method))
- {
- parse_error_context
- (DECL_FUNCTION_WFL (method), "Duplicate %s declaration `%s'",
- (DECL_CONSTRUCTOR_P (redef) ? "constructor" : "method"),
- get_printable_method_name (redef));
- return 1;
- }
- }
- return 0;
-}
-
-/* Return 1 if check went ok, 0 otherwise. */
-static int
-check_abstract_method_definitions (do_interface, class_decl, type)
- int do_interface;
- tree class_decl, type;
-{
- tree class = TREE_TYPE (class_decl);
- tree method, end_type;
- int ok = 1;
-
- end_type = (do_interface ? object_type_node : type);
- for (method = TYPE_METHODS (type); method; method = TREE_CHAIN (method))
- {
- tree other_super, other_method, method_sig, method_name;
- int found = 0;
- int end_type_reached = 0;
-
- if (!METHOD_ABSTRACT (method) || METHOD_FINAL (method))
- continue;
-
- /* Now verify that somewhere in between TYPE and CLASS,
- abstract method METHOD gets a non abstract definition
- that is inherited by CLASS. */
-
- method_sig = build_java_signature (TREE_TYPE (method));
- method_name = DECL_NAME (method);
- if (TREE_CODE (method_name) == EXPR_WITH_FILE_LOCATION)
- method_name = EXPR_WFL_NODE (method_name);
-
- other_super = class;
- do {
- if (other_super == end_type)
- end_type_reached = 1;
-
- /* Method search */
- for (other_method = TYPE_METHODS (other_super); other_method;
- other_method = TREE_CHAIN (other_method))
- {
- tree s = build_java_signature (TREE_TYPE (other_method));
- tree other_name = DECL_NAME (other_method);
-
- if (TREE_CODE (other_name) == EXPR_WITH_FILE_LOCATION)
- other_name = EXPR_WFL_NODE (other_name);
- if (!DECL_CLINIT_P (other_method)
- && !DECL_CONSTRUCTOR_P (other_method)
- && method_name == other_name
- && method_sig == s
- && !METHOD_ABSTRACT (other_method))
- {
- found = 1;
- break;
- }
- }
- other_super = CLASSTYPE_SUPER (other_super);
- } while (!end_type_reached);
-
- /* Report that abstract METHOD didn't find an implementation
- that CLASS can use. */
- if (!found)
- {
- char *t = xstrdup (lang_printable_name
- (TREE_TYPE (TREE_TYPE (method)), 0));
- tree ccn = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
-
- parse_error_context
- (lookup_cl (class_decl),
- "Class `%s' doesn't define the abstract method `%s %s' from %s `%s'. This method must be defined or %s `%s' must be declared abstract",
- IDENTIFIER_POINTER (DECL_NAME (class_decl)),
- t, lang_printable_name (method, 0),
- (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))) ?
- "interface" : "class"),
- IDENTIFIER_POINTER (ccn),
- (CLASS_INTERFACE (class_decl) ? "interface" : "class"),
- IDENTIFIER_POINTER (DECL_NAME (class_decl)));
- ok = 0;
- free (t);
- }
- }
-
- if (ok && do_interface)
- {
- /* Check for implemented interfaces. */
- int i;
- tree vector = TYPE_BINFO_BASETYPES (type);
- for (i = 1; ok && vector && i < TREE_VEC_LENGTH (vector); i++)
- {
- tree super = BINFO_TYPE (TREE_VEC_ELT (vector, i));
- ok = check_abstract_method_definitions (1, class_decl, super);
- }
- }
-
- return ok;
-}
-
-/* Check that CLASS_DECL somehow implements all inherited abstract
- methods. */
-
-static void
-java_check_abstract_method_definitions (class_decl)
- tree class_decl;
-{
- tree class = TREE_TYPE (class_decl);
- tree super, vector;
- int i;
-
- if (CLASS_ABSTRACT (class_decl))
- return;
-
- /* Check for inherited types */
- super = class;
- do {
- super = CLASSTYPE_SUPER (super);
- check_abstract_method_definitions (0, class_decl, super);
- } while (super != object_type_node);
-
- /* Check for implemented interfaces. */
- vector = TYPE_BINFO_BASETYPES (class);
- for (i = 1; i < TREE_VEC_LENGTH (vector); i++)
- {
- super = BINFO_TYPE (TREE_VEC_ELT (vector, i));
- check_abstract_method_definitions (1, class_decl, super);
- }
-}
-
-/* Check all the types method DECL uses and return 1 if all of them
- are now complete, 0 otherwise. This is used to check whether its
- safe to build a method signature or not. */
-
-static int
-check_method_types_complete (decl)
- tree decl;
-{
- tree type = TREE_TYPE (decl);
- tree args;
-
- if (!INCOMPLETE_TYPE_P (TREE_TYPE (type)))
- return 0;
-
- args = TYPE_ARG_TYPES (type);
- if (TREE_CODE (type) == METHOD_TYPE)
- args = TREE_CHAIN (args);
- for (; args != end_params_node; args = TREE_CHAIN (args))
- if (INCOMPLETE_TYPE_P (TREE_VALUE (args)))
- return 0;
-
- return 1;
-}
-
-/* Visible interface to check methods contained in CLASS_DECL */
-
-void
-java_check_methods (class_decl)
- tree class_decl;
-{
- if (CLASS_METHOD_CHECKED_P (TREE_TYPE (class_decl)))
- return;
-
- if (CLASS_INTERFACE (class_decl))
- java_check_abstract_methods (class_decl);
- else
- java_check_regular_methods (class_decl);
-
- CLASS_METHOD_CHECKED_P (TREE_TYPE (class_decl)) = 1;
-}
-
-/* Check all the methods of CLASS_DECL. Methods are first completed
- then checked according to regular method existence rules. If no
- constructor for CLASS_DECL were encountered, then build its
- declaration. */
-
-static void
-java_check_regular_methods (class_decl)
- tree class_decl;
-{
- int saw_constructor = ANONYMOUS_CLASS_P (TREE_TYPE (class_decl));
- tree method;
- tree class = CLASS_TO_HANDLE_TYPE (TREE_TYPE (class_decl));
- tree found = NULL_TREE;
- tree mthrows;
-
- /* It is not necessary to check methods defined in java.lang.Object */
- if (class == object_type_node)
- return;
-
- if (!TYPE_NVIRTUALS (class))
- TYPE_METHODS (class) = nreverse (TYPE_METHODS (class));
-
- /* Should take interfaces into account. FIXME */
- for (method = TYPE_METHODS (class); method; method = TREE_CHAIN (method))
- {
- tree sig;
- tree method_wfl = DECL_FUNCTION_WFL (method);
- int aflags;
-
- /* Check for redefinitions */
- if (check_method_redefinition (class, method))
- continue;
-
- /* If we see one constructor a mark so we don't generate the
- default one. Also skip other verifications: constructors
- can't be inherited hence hiden or overriden */
- if (DECL_CONSTRUCTOR_P (method))
- {
- saw_constructor = 1;
- continue;
- }
-
- /* We verify things thrown by the method. They must inherits from
- java.lang.Throwable */
- for (mthrows = DECL_FUNCTION_THROWS (method);
- mthrows; mthrows = TREE_CHAIN (mthrows))
- {
- if (!inherits_from_p (TREE_VALUE (mthrows), throwable_type_node))
- parse_error_context
- (TREE_PURPOSE (mthrows), "Class `%s' in `throws' clause must be a subclass of class `java.lang.Throwable'",
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))));
- }
-
- sig = build_java_argument_signature (TREE_TYPE (method));
- found = lookup_argument_method2 (class, DECL_NAME (method), sig);
-
- /* Inner class can't declare static methods */
- if (METHOD_STATIC (method) && !TOPLEVEL_CLASS_DECL_P (class_decl))
- {
- char *t = xstrdup (lang_printable_name (class, 0));
- parse_error_context
- (method_wfl, "Method `%s' can't be static in inner class `%s'. Only members of interfaces and top-level classes can be static",
- lang_printable_name (method, 0), t);
- free (t);
- }
-
- /* Nothing overrides or it's a private method. */
- if (!found)
- continue;
- if (METHOD_PRIVATE (found))
- {
- found = NULL_TREE;
- continue;
- }
-
- /* If `found' is declared in an interface, make sure the
- modifier matches. */
- if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (found)))
- && clinit_identifier_node != DECL_NAME (found)
- && !METHOD_PUBLIC (method))
- {
- tree found_decl = TYPE_NAME (DECL_CONTEXT (found));
- parse_error_context (method_wfl, "Class `%s' must override `%s' with a public method in order to implement interface `%s'",
- IDENTIFIER_POINTER (DECL_NAME (class_decl)),
- lang_printable_name (method, 0),
- IDENTIFIER_POINTER (DECL_NAME (found_decl)));
- }
-
- /* Can't override a method with the same name and different return
- types. */
- if (TREE_TYPE (TREE_TYPE (found)) != TREE_TYPE (TREE_TYPE (method)))
- {
- char *t = xstrdup
- (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 0));
- parse_error_context
- (method_wfl,
- "Method `%s' was defined with return type `%s' in class `%s'",
- lang_printable_name (found, 0), t,
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
- free (t);
- }
-
- aflags = get_access_flags_from_decl (found);
-
- /* Can't override final. Can't override static. */
- if (METHOD_FINAL (found) || METHOD_STATIC (found))
- {
- /* Static *can* override static */
- if (METHOD_STATIC (found) && METHOD_STATIC (method))
- continue;
- parse_error_context
- (method_wfl,
- "%s methods can't be overriden. Method `%s' is %s in class `%s'",
- (METHOD_FINAL (found) ? "Final" : "Static"),
- lang_printable_name (found, 0),
- (METHOD_FINAL (found) ? "final" : "static"),
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
- continue;
- }
-
- /* Static method can't override instance method. */
- if (METHOD_STATIC (method))
- {
- parse_error_context
- (method_wfl,
- "Instance methods can't be overriden by a static method. Method `%s' is an instance method in class `%s'",
- lang_printable_name (found, 0),
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
- continue;
- }
-
- /* - Overriding/hiding public must be public
- - Overriding/hiding protected must be protected or public
- - If the overriden or hidden method has default (package)
- access, then the overriding or hiding method must not be
- private; otherwise, a compile-time error occurs. If
- `found' belongs to an interface, things have been already
- taken care of. */
- if (!CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (found)))
- && ((METHOD_PUBLIC (found) && !METHOD_PUBLIC (method))
- || (METHOD_PROTECTED (found)
- && !(METHOD_PUBLIC (method) || METHOD_PROTECTED (method)))
- || (!(aflags & (ACC_PUBLIC | ACC_PRIVATE | ACC_STATIC))
- && METHOD_PRIVATE (method))))
- {
- parse_error_context
- (method_wfl,
- "Methods can't be overridden to be more private. Method `%s' is not %s in class `%s'", lang_printable_name (method, 0),
- (METHOD_PUBLIC (method) ? "public" :
- (METHOD_PRIVATE (method) ? "private" : "protected")),
- IDENTIFIER_POINTER (DECL_NAME
- (TYPE_NAME (DECL_CONTEXT (found)))));
- continue;
- }
-
- /* Overriding methods must have compatible `throws' clauses on checked
- exceptions, if any */
- check_throws_clauses (method, method_wfl, found);
-
- /* Inheriting multiple methods with the same signature. FIXME */
- }
-
- if (!TYPE_NVIRTUALS (class))
- TYPE_METHODS (class) = nreverse (TYPE_METHODS (class));
-
- /* Search for inherited abstract method not yet implemented in this
- class. */
- java_check_abstract_method_definitions (class_decl);
-
- if (!saw_constructor)
- abort ();
-}
-
-/* Return a non zero value if the `throws' clause of METHOD (if any)
- is incompatible with the `throws' clause of FOUND (if any). */
-
-static void
-check_throws_clauses (method, method_wfl, found)
- tree method, method_wfl, found;
-{
- tree mthrows, fthrows;
-
- /* Can't check these things with class loaded from bytecode. FIXME */
- if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (found)))
- return;
-
- for (mthrows = DECL_FUNCTION_THROWS (method);
- mthrows; mthrows = TREE_CHAIN (mthrows))
- {
- /* We don't verify unchecked expressions */
- if (IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (mthrows)))
- continue;
- /* Checked expression must be compatible */
- for (fthrows = DECL_FUNCTION_THROWS (found);
- fthrows; fthrows = TREE_CHAIN (fthrows))
- if (inherits_from_p (TREE_VALUE (mthrows), TREE_VALUE (fthrows)))
- break;
- if (!fthrows)
- {
- parse_error_context
- (method_wfl, "Invalid checked exception class `%s' in `throws' clause. The exception must be a subclass of an exception thrown by `%s' from class `%s'",
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))),
- lang_printable_name (found, 0),
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
- }
- }
-}
-
-/* Check abstract method of interface INTERFACE */
-
-static void
-java_check_abstract_methods (interface_decl)
- tree interface_decl;
-{
- int i, n;
- tree method, basetype_vec, found;
- tree interface = TREE_TYPE (interface_decl);
-
- for (method = TYPE_METHODS (interface); method; method = TREE_CHAIN (method))
- {
- /* 2- Check for double definition inside the defining interface */
- if (check_method_redefinition (interface, method))
- continue;
-
- /* 3- Overriding is OK as far as we preserve the return type and
- the thrown exceptions (FIXME) */
- found = lookup_java_interface_method2 (interface, method);
- if (found)
- {
- char *t;
- t = xstrdup (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 0));
- parse_error_context
- (DECL_FUNCTION_WFL (found),
- "Method `%s' was defined with return type `%s' in class `%s'",
- lang_printable_name (found, 0), t,
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
- free (t);
- continue;
- }
- }
-
- /* 4- Inherited methods can't differ by their returned types */
- if (!(basetype_vec = TYPE_BINFO_BASETYPES (interface)))
- return;
- n = TREE_VEC_LENGTH (basetype_vec);
- for (i = 0; i < n; i++)
- {
- tree sub_interface_method, sub_interface;
- tree vec_elt = TREE_VEC_ELT (basetype_vec, i);
- if (!vec_elt)
- continue;
- sub_interface = BINFO_TYPE (vec_elt);
- for (sub_interface_method = TYPE_METHODS (sub_interface);
- sub_interface_method;
- sub_interface_method = TREE_CHAIN (sub_interface_method))
- {
- found = lookup_java_interface_method2 (interface,
- sub_interface_method);
- if (found && (found != sub_interface_method))
- {
- parse_error_context
- (lookup_cl (sub_interface_method),
- "Interface `%s' inherits method `%s' from interface `%s'. This method is redefined with a different return type in interface `%s'",
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (interface))),
- lang_printable_name (found, 0),
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME
- (DECL_CONTEXT (sub_interface_method)))),
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
- }
- }
- }
-}
-
-/* Lookup methods in interfaces using their name and partial
- signature. Return a matching method only if their types differ. */
-
-static tree
-lookup_java_interface_method2 (class, method_decl)
- tree class, method_decl;
-{
- int i, n;
- tree basetype_vec = TYPE_BINFO_BASETYPES (class), to_return;
-
- if (!basetype_vec)
- return NULL_TREE;
-
- n = TREE_VEC_LENGTH (basetype_vec);
- for (i = 0; i < n; i++)
- {
- tree vec_elt = TREE_VEC_ELT (basetype_vec, i), to_return;
- if ((BINFO_TYPE (vec_elt) != object_type_node)
- && (to_return =
- lookup_java_method2 (BINFO_TYPE (vec_elt), method_decl, 1)))
- return to_return;
- }
- for (i = 0; i < n; i++)
- {
- to_return = lookup_java_interface_method2
- (BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i)), method_decl);
- if (to_return)
- return to_return;
- }
-
- return NULL_TREE;
-}
-
-/* Lookup method using their name and partial signature. Return a
- matching method only if their types differ. */
-
-static tree
-lookup_java_method2 (clas, method_decl, do_interface)
- tree clas, method_decl;
- int do_interface;
-{
- tree method, method_signature, method_name, method_type, name;
-
- method_signature = build_java_argument_signature (TREE_TYPE (method_decl));
- name = DECL_NAME (method_decl);
- method_name = (TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ?
- EXPR_WFL_NODE (name) : name);
- method_type = TREE_TYPE (TREE_TYPE (method_decl));
-
- while (clas != NULL_TREE)
- {
- for (method = TYPE_METHODS (clas);
- method != NULL_TREE; method = TREE_CHAIN (method))
- {
- tree method_sig = build_java_argument_signature (TREE_TYPE (method));
- tree name = DECL_NAME (method);
- if ((TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ?
- EXPR_WFL_NODE (name) : name) == method_name
- && method_sig == method_signature
- && TREE_TYPE (TREE_TYPE (method)) != method_type)
- return method;
- }
- clas = (do_interface ? NULL_TREE : CLASSTYPE_SUPER (clas));
- }
- return NULL_TREE;
-}
-
-/* Return the line that matches DECL line number, and try its best to
- position the column number. Used during error reports. */
-
-static tree
-lookup_cl (decl)
- tree decl;
-{
- static tree cl = NULL_TREE;
- char *line, *found;
-
- if (!decl)
- return NULL_TREE;
-
- if (cl == NULL_TREE)
- {
- cl = build_expr_wfl (NULL_TREE, NULL, 0, 0);
- ggc_add_tree_root (&cl, 1);
- }
-
- EXPR_WFL_FILENAME_NODE (cl) = get_identifier (DECL_SOURCE_FILE (decl));
- EXPR_WFL_SET_LINECOL (cl, DECL_SOURCE_LINE_FIRST (decl), -1);
-
- line = java_get_line_col (EXPR_WFL_FILENAME (cl),
- EXPR_WFL_LINENO (cl), EXPR_WFL_COLNO (cl));
-
- found = strstr ((const char *)line,
- (const char *)IDENTIFIER_POINTER (DECL_NAME (decl)));
- if (found)
- EXPR_WFL_SET_LINECOL (cl, EXPR_WFL_LINENO (cl), found - line);
-
- return cl;
-}
-
-/* Look for a simple name in the single-type import list */
-
-static tree
-find_name_in_single_imports (name)
- tree name;
-{
- tree node;
-
- for (node = ctxp->import_list; node; node = TREE_CHAIN (node))
- if (TREE_VALUE (node) == name)
- return (EXPR_WFL_NODE (TREE_PURPOSE (node)));
-
- return NULL_TREE;
-}
-
-/* Process all single-type import. */
-
-static int
-process_imports ()
-{
- tree import;
- int error_found;
-
- for (import = ctxp->import_list; import; import = TREE_CHAIN (import))
- {
- tree to_be_found = EXPR_WFL_NODE (TREE_PURPOSE (import));
- char *original_name;
-
- obstack_grow0 (&temporary_obstack,
- IDENTIFIER_POINTER (to_be_found),
- IDENTIFIER_LENGTH (to_be_found));
- original_name = obstack_finish (&temporary_obstack);
-
- /* Don't load twice something already defined. */
- if (IDENTIFIER_CLASS_VALUE (to_be_found))
- continue;
-
- while (1)
- {
- tree left;
-
- QUALIFIED_P (to_be_found) = 1;
- load_class (to_be_found, 0);
- error_found =
- check_pkg_class_access (to_be_found, TREE_PURPOSE (import), true);
-
- /* We found it, we can bail out */
- if (IDENTIFIER_CLASS_VALUE (to_be_found))
- break;
-
- /* We haven't found it. Maybe we're trying to access an
- inner class. The only way for us to know is to try again
- after having dropped a qualifier. If we can't break it further,
- we have an error. */
- if (breakdown_qualified (&left, NULL, to_be_found))
- break;
-
- to_be_found = left;
- }
- if (!IDENTIFIER_CLASS_VALUE (to_be_found))
- {
- parse_error_context (TREE_PURPOSE (import),
- "Class or interface `%s' not found in import",
- original_name);
- error_found = 1;
- }
-
- obstack_free (&temporary_obstack, original_name);
- if (error_found)
- return 1;
- }
- return 0;
-}
-
-/* Possibly find and mark a class imported by a single-type import
- statement. */
-
-static void
-find_in_imports (enclosing_type, class_type)
- tree enclosing_type;
- tree class_type;
-{
- tree import = (enclosing_type ? TYPE_IMPORT_LIST (enclosing_type) :
- ctxp->import_list);
- while (import)
- {
- if (TREE_VALUE (import) == TYPE_NAME (class_type))
- {
- TYPE_NAME (class_type) = EXPR_WFL_NODE (TREE_PURPOSE (import));
- QUALIFIED_P (TYPE_NAME (class_type)) = 1;
- return;
- }
- import = TREE_CHAIN (import);
- }
-}
-
-static int
-note_possible_classname (name, len)
- const char *name;
- int len;
-{
- tree node;
- if (len > 5 && strncmp (&name [len-5], ".java", 5) == 0)
- len = len - 5;
- else if (len > 6 && strncmp (&name [len-6], ".class", 6) == 0)
- len = len - 6;
- else
- return 0;
- node = ident_subst (name, len, "", '/', '.', "");
- IS_A_CLASSFILE_NAME (node) = 1; /* Or soon to be */
- QUALIFIED_P (node) = strchr (name, '/') ? 1 : 0;
- return 1;
-}
-
-/* Read a import directory, gathering potential match for further type
- references. Indifferently reads a filesystem or a ZIP archive
- directory. */
-
-static void
-read_import_dir (wfl)
- tree wfl;
-{
- tree package_id = EXPR_WFL_NODE (wfl);
- const char *package_name = IDENTIFIER_POINTER (package_id);
- int package_length = IDENTIFIER_LENGTH (package_id);
- DIR *dirp = NULL;
- JCF *saved_jcf = current_jcf;
-
- int found = 0;
- int k;
- void *entry;
- struct buffer filename[1];
-
- if (IS_AN_IMPORT_ON_DEMAND_P (package_id))
- return;
- IS_AN_IMPORT_ON_DEMAND_P (package_id) = 1;
-
- BUFFER_INIT (filename);
- buffer_grow (filename, package_length + 100);
-
- for (entry = jcf_path_start (); entry != NULL; entry = jcf_path_next (entry))
- {
- const char *entry_name = jcf_path_name (entry);
- int entry_length = strlen (entry_name);
- if (jcf_path_is_zipfile (entry))
- {
- ZipFile *zipf;
- buffer_grow (filename, entry_length);
- memcpy (filename->data, entry_name, entry_length - 1);
- filename->data[entry_length-1] = '\0';
- zipf = opendir_in_zip (filename->data, jcf_path_is_system (entry));
- if (zipf == NULL)
- error ("malformed .zip archive in CLASSPATH: %s", entry_name);
- else
- {
- ZipDirectory *zipd = (ZipDirectory *) zipf->central_directory;
- BUFFER_RESET (filename);
- for (k = 0; k < package_length; k++)
- {
- char ch = package_name[k];
- *filename->ptr++ = ch == '.' ? '/' : ch;
- }
- *filename->ptr++ = '/';
-
- for (k = 0; k < zipf->count; k++, zipd = ZIPDIR_NEXT (zipd))
- {
- const char *current_entry = ZIPDIR_FILENAME (zipd);
- int current_entry_len = zipd->filename_length;
-
- if (current_entry_len >= BUFFER_LENGTH (filename)
- && strncmp (filename->data, current_entry,
- BUFFER_LENGTH (filename)) != 0)
- continue;
- found |= note_possible_classname (current_entry,
- current_entry_len);
- }
- }
- }
- else
- {
- BUFFER_RESET (filename);
- buffer_grow (filename, entry_length + package_length + 4);
- strcpy (filename->data, entry_name);
- filename->ptr = filename->data + entry_length;
- for (k = 0; k < package_length; k++)
- {
- char ch = package_name[k];
- *filename->ptr++ = ch == '.' ? '/' : ch;
- }
- *filename->ptr = '\0';
-
- dirp = opendir (filename->data);
- if (dirp == NULL)
- continue;
- *filename->ptr++ = '/';
- for (;;)
- {
- int len;
- const char *d_name;
- struct dirent *direntp = readdir (dirp);
- if (!direntp)
- break;
- d_name = direntp->d_name;
- len = strlen (direntp->d_name);
- buffer_grow (filename, len+1);
- strcpy (filename->ptr, d_name);
- found |= note_possible_classname (filename->data + entry_length,
- package_length+len+1);
- }
- if (dirp)
- closedir (dirp);
- }
- }
-
- free (filename->data);
-
- /* Here we should have a unified way of retrieving an entry, to be
- indexed. */
- if (!found)
- {
- static int first = 1;
- if (first)
- {
- error ("Can't find default package `%s'. Check the CLASSPATH environment variable and the access to the archives", package_name);
- java_error_count++;
- first = 0;
- }
- else
- parse_error_context (wfl, "Package `%s' not found in import",
- package_name);
- current_jcf = saved_jcf;
- return;
- }
- current_jcf = saved_jcf;
-}
-
-/* Possibly find a type in the import on demands specified
- types. Returns 1 if an error occurred, 0 otherwise. Run through the
- entire list, to detected potential double definitions. */
-
-static int
-find_in_imports_on_demand (enclosing_type, class_type)
- tree enclosing_type;
- tree class_type;
-{
- tree class_type_name = TYPE_NAME (class_type);
- tree import = (enclosing_type ? TYPE_IMPORT_DEMAND_LIST (enclosing_type) :
- ctxp->import_demand_list);
- tree cl = NULL_TREE;
- int seen_once = -1; /* -1 when not set, 1 if seen once, >1 otherwise. */
- int to_return = -1; /* -1 when not set, 0 or 1 otherwise */
- tree node;
-
- for (; import; import = TREE_CHAIN (import))
- {
- int saved_lineno = lineno;
- int access_check;
- const char *id_name;
- tree decl, type_name_copy;
-
- obstack_grow (&temporary_obstack,
- IDENTIFIER_POINTER (EXPR_WFL_NODE (TREE_PURPOSE (import))),
- IDENTIFIER_LENGTH (EXPR_WFL_NODE (TREE_PURPOSE (import))));
- obstack_1grow (&temporary_obstack, '.');
- obstack_grow0 (&temporary_obstack,
- IDENTIFIER_POINTER (class_type_name),
- IDENTIFIER_LENGTH (class_type_name));
- id_name = obstack_finish (&temporary_obstack);
-
- if (! (node = maybe_get_identifier (id_name)))
- continue;
-
- /* Setup lineno so that it refers to the line of the import (in
- case we parse a class file and encounter errors */
- lineno = EXPR_WFL_LINENO (TREE_PURPOSE (import));
-
- type_name_copy = TYPE_NAME (class_type);
- TYPE_NAME (class_type) = node;
- QUALIFIED_P (node) = 1;
- decl = IDENTIFIER_CLASS_VALUE (node);
- access_check = -1;
- /* If there is no DECL set for the class or if the class isn't
- loaded and not seen in source yet, then load */
- if (!decl || (!CLASS_LOADED_P (TREE_TYPE (decl))
- && !CLASS_FROM_SOURCE_P (TREE_TYPE (decl))))
- {
- load_class (node, 0);
- decl = IDENTIFIER_CLASS_VALUE (node);
- }
- if (decl && ! INNER_CLASS_P (TREE_TYPE (decl)))
- access_check = check_pkg_class_access (node, TREE_PURPOSE (import),
- false);
- else
- /* 6.6.1: Inner classes are subject to member access rules. */
- access_check = 0;
-
- lineno = saved_lineno;
-
- /* If the loaded class is not accessible or couldn't be loaded,
- we restore the original TYPE_NAME and process the next
- import. */
- if (access_check || !decl)
- {
- TYPE_NAME (class_type) = type_name_copy;
- continue;
- }
-
- /* If the loaded class is accessible, we keep a tab on it to
- detect and report multiple inclusions. */
- if (IS_A_CLASSFILE_NAME (node))
- {
- if (seen_once < 0)
- {
- cl = TREE_PURPOSE (import);
- seen_once = 1;
- }
- else if (seen_once >= 0)
- {
- tree location = (cl ? cl : TREE_PURPOSE (import));
- tree package = (cl ? EXPR_WFL_NODE (cl) :
- EXPR_WFL_NODE (TREE_PURPOSE (import)));
- seen_once++;
- parse_error_context
- (location,
- "Type `%s' also potentially defined in package `%s'",
- IDENTIFIER_POINTER (TYPE_NAME (class_type)),
- IDENTIFIER_POINTER (package));
- }
- }
- to_return = access_check;
- }
-
- if (seen_once == 1)
- return to_return;
- else
- return (seen_once < 0 ? 0 : seen_once); /* It's ok not to have found */
-}
-
-/* Add package NAME to the list of package encountered so far. To
- speed up class lookup in do_resolve_class, we make sure a
- particular package is added only once. */
-
-static void
-register_package (name)
- tree name;
-{
- static struct hash_table _pht, *pht = NULL;
-
- if (!pht)
- {
- hash_table_init (&_pht, hash_newfunc,
- java_hash_hash_tree_node, java_hash_compare_tree_node);
- pht = &_pht;
- }
-
- if (!hash_lookup (pht, (const hash_table_key) name, FALSE, NULL))
- {
- package_list = chainon (package_list, build_tree_list (name, NULL));
- hash_lookup (pht, (const hash_table_key) name, TRUE, NULL);
- }
-}
-
-static tree
-resolve_package (pkg, next, type_name)
- tree pkg, *next, *type_name;
-{
- tree current;
- tree decl = NULL_TREE;
- *type_name = NULL_TREE;
-
- /* The trick is to determine when the package name stops and were
- the name of something contained in the package starts. Then we
- return a fully qualified name of what we want to get. */
-
- *next = EXPR_WFL_QUALIFICATION (pkg);
-
- /* Try to progressively construct a type name */
- if (TREE_CODE (pkg) == EXPR_WITH_FILE_LOCATION)
- for (current = EXPR_WFL_QUALIFICATION (pkg);
- current; current = TREE_CHAIN (current))
- {
- /* If we don't have what we're expecting, exit now. TYPE_NAME
- will be null and the error caught later. */
- if (TREE_CODE (QUAL_WFL (current)) != EXPR_WITH_FILE_LOCATION)
- break;
- *type_name =
- merge_qualified_name (*type_name, EXPR_WFL_NODE (QUAL_WFL (current)));
- if ((decl = resolve_no_layout (*type_name, NULL_TREE)))
- {
- /* resolve_package should be used in a loop, hence we
- point at this one to naturally process the next one at
- the next iteration. */
- *next = current;
- break;
- }
- }
- return decl;
-}
-
-
-/* Check accessibility of inner classes according to member access rules.
- DECL is the inner class, ENCLOSING_DECL is the class from which the
- access is being attempted. */
-
-static void
-check_inner_class_access (decl, enclosing_decl, cl)
- tree decl, enclosing_decl, cl;
-{
- const char *access;
- tree enclosing_decl_type;
-
- /* We don't issue an error message when CL is null. CL can be null
- as a result of processing a JDEP crafted by source_start_java_method
- for the purpose of patching its parm decl. But the error would
- have been already trapped when fixing the method's signature.
- DECL can also be NULL in case of earlier errors. */
- if (!decl || !cl)
- return;
-
- enclosing_decl_type = TREE_TYPE (enclosing_decl);
-
- if (CLASS_PRIVATE (decl))
- {
- /* Access is permitted only within the body of the top-level
- class in which DECL is declared. */
- tree top_level = decl;
- while (DECL_CONTEXT (top_level))
- top_level = DECL_CONTEXT (top_level);
- while (DECL_CONTEXT (enclosing_decl))
- enclosing_decl = DECL_CONTEXT (enclosing_decl);
- if (top_level == enclosing_decl)
- return;
- access = "private";
- }
- else if (CLASS_PROTECTED (decl))
- {
- tree decl_context;
- /* Access is permitted from within the same package... */
- if (in_same_package (decl, enclosing_decl))
- return;
-
- /* ... or from within the body of a subtype of the context in which
- DECL is declared. */
- decl_context = DECL_CONTEXT (decl);
- while (enclosing_decl)
- {
- if (CLASS_INTERFACE (decl))
- {
- if (interface_of_p (TREE_TYPE (decl_context),
- enclosing_decl_type))
- return;
- }
- else
- {
- /* Eww. The order of the arguments is different!! */
- if (inherits_from_p (enclosing_decl_type,
- TREE_TYPE (decl_context)))
- return;
- }
- enclosing_decl = DECL_CONTEXT (enclosing_decl);
- }
- access = "protected";
- }
- else if (! CLASS_PUBLIC (decl))
- {
- /* Access is permitted only from within the same package as DECL. */
- if (in_same_package (decl, enclosing_decl))
- return;
- access = "non-public";
- }
- else
- /* Class is public. */
- return;
-
- parse_error_context (cl, "Nested %s %s is %s; cannot be accessed from here",
- (CLASS_INTERFACE (decl) ? "interface" : "class"),
- lang_printable_name (decl, 0), access);
-}
-
-/* Accessibility check for top-level classes. If CLASS_NAME is in a
- foreign package, it must be PUBLIC. Return 0 if no access
- violations were found, 1 otherwise. If VERBOSE is true and an error
- was found, it is reported and accounted for. */
-
-static int
-check_pkg_class_access (class_name, cl, verbose)
- tree class_name;
- tree cl;
- bool verbose;
-{
- tree type;
-
- if (!IDENTIFIER_CLASS_VALUE (class_name))
- return 0;
-
- if (!(type = TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_name))))
- return 0;
-
- if (!CLASS_PUBLIC (TYPE_NAME (type)))
- {
- /* Access to a private class within the same package is
- allowed. */
- tree l, r;
- breakdown_qualified (&l, &r, class_name);
- if (!QUALIFIED_P (class_name) && !ctxp->package)
- /* Both in the empty package. */
- return 0;
- if (l == ctxp->package)
- /* Both in the same package. */
- return 0;
-
- if (verbose)
- parse_error_context
- (cl, "Can't access %s `%s'. Only public classes and interfaces in other packages can be accessed",
- (CLASS_INTERFACE (TYPE_NAME (type)) ? "interface" : "class"),
- IDENTIFIER_POINTER (class_name));
- return 1;
- }
- return 0;
-}
-
-/* Local variable declaration. */
-
-static void
-declare_local_variables (modifier, type, vlist)
- int modifier;
- tree type;
- tree vlist;
-{
- tree decl, current, saved_type;
- tree type_wfl = NULL_TREE;
- int must_chain = 0;
- int final_p = 0;
-
- /* Push a new block if statements were seen between the last time we
- pushed a block and now. Keep a count of blocks to close */
- if (BLOCK_EXPR_BODY (GET_CURRENT_BLOCK (current_function_decl)))
- {
- tree b = enter_block ();
- BLOCK_IS_IMPLICIT (b) = 1;
- }
-
- if (modifier)
- {
- int i;
- for (i = 0; i <= 10; i++) if (1 << i & modifier) break;
- if (modifier == ACC_FINAL)
- final_p = 1;
- else
- {
- parse_error_context
- (ctxp->modifier_ctx [i],
- "Only `final' is allowed as a local variables modifier");
- return;
- }
- }
-
- /* Obtain an incomplete type if TYPE is not complete. TYPE_WFL will
- hold the TYPE value if a new incomplete has to be created (as
- opposed to being found already existing and reused). */
- SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);
-
- /* If TYPE is fully resolved and we don't have a reference, make one */
- PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
-
- /* Go through all the declared variables */
- for (current = vlist, saved_type = type; current;
- current = TREE_CHAIN (current), type = saved_type)
- {
- tree other, real_type;
- tree wfl = TREE_PURPOSE (current);
- tree name = EXPR_WFL_NODE (wfl);
- tree init = TREE_VALUE (current);
-
- /* Process NAME, as it may specify extra dimension(s) for it */
- type = build_array_from_name (type, type_wfl, name, &name);
-
- /* Variable redefinition check */
- if ((other = lookup_name_in_blocks (name)))
- {
- variable_redefinition_error (wfl, name, TREE_TYPE (other),
- DECL_SOURCE_LINE (other));
- continue;
- }
-
- /* Type adjustment. We may have just readjusted TYPE because
- the variable specified more dimensions. Make sure we have
- a reference if we can and don't have one already. */
- PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
-
- real_type = GET_REAL_TYPE (type);
- /* Never layout this decl. This will be done when its scope
- will be entered */
- decl = build_decl (VAR_DECL, name, real_type);
- MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
- DECL_FINAL (decl) = final_p;
- BLOCK_CHAIN_DECL (decl);
-
- /* If doing xreferencing, replace the line number with the WFL
- compound value */
- if (flag_emit_xref)
- DECL_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (wfl);
-
- /* Don't try to use an INIT statement when an error was found */
- if (init && java_error_count)
- init = NULL_TREE;
-
- /* Add the initialization function to the current function's code */
- if (init)
- {
- /* Name might have been readjusted */
- EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = name;
- MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1;
- java_method_add_stmt (current_function_decl,
- build_debugable_stmt (EXPR_WFL_LINECOL (init),
- init));
- }
-
- /* Setup dependency the type of the decl */
- if (must_chain)
- {
- jdep *dep;
- register_incomplete_type (JDEP_VARIABLE, type_wfl, decl, type);
- dep = CLASSD_LAST (ctxp->classd_list);
- JDEP_GET_PATCH (dep) = &TREE_TYPE (decl);
- }
- }
- SOURCE_FRONTEND_DEBUG (("Defined locals"));
-}
-
-/* Called during parsing. Build decls from argument list. */
-
-static void
-source_start_java_method (fndecl)
- tree fndecl;
-{
- tree tem;
- tree parm_decl;
- int i;
-
- if (!fndecl)
- return;
-
- current_function_decl = fndecl;
-
- /* New scope for the function */
- enter_block ();
- for (tem = TYPE_ARG_TYPES (TREE_TYPE (fndecl)), i = 0;
- tem != end_params_node; tem = TREE_CHAIN (tem), i++)
- {
- tree type = TREE_VALUE (tem);
- tree name = TREE_PURPOSE (tem);
-
- /* If type is incomplete. Create an incomplete decl and ask for
- the decl to be patched later */
- if (INCOMPLETE_TYPE_P (type))
- {
- jdep *jdep;
- tree real_type = GET_REAL_TYPE (type);
- parm_decl = build_decl (PARM_DECL, name, real_type);
- type = obtain_incomplete_type (type);
- register_incomplete_type (JDEP_PARM, NULL_TREE, NULL_TREE, type);
- jdep = CLASSD_LAST (ctxp->classd_list);
- JDEP_MISC (jdep) = name;
- JDEP_GET_PATCH (jdep) = &TREE_TYPE (parm_decl);
- }
- else
- parm_decl = build_decl (PARM_DECL, name, type);
-
- /* Remember if a local variable was declared final (via its
- TREE_LIST of type/name.) Set DECL_FINAL accordingly. */
- if (ARG_FINAL_P (tem))
- {
- MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (parm_decl);
- DECL_FINAL (parm_decl) = 1;
- }
-
- BLOCK_CHAIN_DECL (parm_decl);
- }
- tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));
- BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)) =
- nreverse (tem);
- DECL_ARG_SLOT_COUNT (current_function_decl) = i;
- DECL_MAX_LOCALS (current_function_decl) = i;
-}
-
-/* Called during parsing. Creates an artificial method declaration. */
-
-static tree
-create_artificial_method (class, flags, type, name, args)
- tree class;
- int flags;
- tree type, name, args;
-{
- tree mdecl;
-
- java_parser_context_save_global ();
- lineno = 0;
- mdecl = make_node (FUNCTION_TYPE);
- TREE_TYPE (mdecl) = type;
- TYPE_ARG_TYPES (mdecl) = args;
- mdecl = add_method (class, flags, name, build_java_signature (mdecl));
- java_parser_context_restore_global ();
- DECL_ARTIFICIAL (mdecl) = 1;
- return mdecl;
-}
-
-/* Starts the body if an artificial method. */
-
-static void
-start_artificial_method_body (mdecl)
- tree mdecl;
-{
- DECL_SOURCE_LINE (mdecl) = 1;
- DECL_SOURCE_LINE_MERGE (mdecl, 1);
- source_start_java_method (mdecl);
- enter_block ();
-}
-
-static void
-end_artificial_method_body (mdecl)
- tree mdecl;
-{
- /* exit_block modifies DECL_FUNCTION_BODY (current_function_decl).
- It has to be evaluated first. (if mdecl is current_function_decl,
- we have an undefined behavior if no temporary variable is used.) */
- tree b = exit_block ();
- BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (mdecl)) = b;
- exit_block ();
-}
-
-/* Dump a tree of some kind. This is a convenience wrapper for the
- dump_* functions in tree-dump.c. */
-static void
-dump_java_tree (phase, t)
- enum tree_dump_index phase;
- tree t;
-{
- FILE *stream;
- int flags;
-
- stream = dump_begin (phase, &flags);
- if (stream)
- {
- dump_node (t, flags, stream);
- dump_end (phase, stream);
- }
-}
-
-/* Terminate a function and expand its body. */
-
-static void
-source_end_java_method ()
-{
- tree fndecl = current_function_decl;
-
- if (!fndecl)
- return;
-
- java_parser_context_save_global ();
- lineno = ctxp->last_ccb_indent1;
-
- /* Turn function bodies with only a NOP expr null, so they don't get
- generated at all and we won't get warnings when using the -W
- -Wall flags. */
- if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)) == empty_stmt_node)
- BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)) = NULL_TREE;
-
- /* We've generated all the trees for this function, and it has been
- patched. Dump it to a file if the user requested it. */
- dump_java_tree (TDI_original, fndecl);
-
- /* Generate function's code */
- if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl))
- && ! flag_emit_class_files
- && ! flag_emit_xref)
- expand_expr_stmt (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)));
-
- /* pop out of its parameters */
- pushdecl_force_head (DECL_ARGUMENTS (fndecl));
- poplevel (1, 0, 1);
- BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
-
- /* Generate rtl for function exit. */
- if (! flag_emit_class_files && ! flag_emit_xref)
- {
- lineno = DECL_SOURCE_LINE_LAST (fndecl);
- expand_function_end (input_filename, lineno, 0);
-
- DECL_SOURCE_LINE (fndecl) = DECL_SOURCE_LINE_FIRST (fndecl);
-
- /* Run the optimizers and output assembler code for this function. */
- rest_of_compilation (fndecl);
- }
-
- current_function_decl = NULL_TREE;
- java_parser_context_restore_global ();
-}
-
-/* Record EXPR in the current function block. Complements compound
- expression second operand if necessary. */
-
-tree
-java_method_add_stmt (fndecl, expr)
- tree fndecl, expr;
-{
- if (!GET_CURRENT_BLOCK (fndecl))
- return NULL_TREE;
- return add_stmt_to_block (GET_CURRENT_BLOCK (fndecl), NULL_TREE, expr);
-}
-
-static tree
-add_stmt_to_block (b, type, stmt)
- tree b, type, stmt;
-{
- tree body = BLOCK_EXPR_BODY (b), c;
-
- if (java_error_count)
- return body;
-
- if ((c = add_stmt_to_compound (body, type, stmt)) == body)
- return body;
-
- BLOCK_EXPR_BODY (b) = c;
- TREE_SIDE_EFFECTS (c) = 1;
- return c;
-}
-
-/* Add STMT to EXISTING if possible, otherwise create a new
- COMPOUND_EXPR and add STMT to it. */
-
-static tree
-add_stmt_to_compound (existing, type, stmt)
- tree existing, type, stmt;
-{
- if (existing)
- return build (COMPOUND_EXPR, type, existing, stmt);
- else
- return stmt;
-}
-
-void java_layout_seen_class_methods ()
-{
- tree previous_list = all_class_list;
- tree end = NULL_TREE;
- tree current;
-
- while (1)
- {
- for (current = previous_list;
- current != end; current = TREE_CHAIN (current))
- layout_class_methods (TREE_TYPE (TREE_VALUE (current)));
-
- if (previous_list != all_class_list)
- {
- end = previous_list;
- previous_list = all_class_list;
- }
- else
- break;
- }
-}
-
-void
-java_reorder_fields ()
-{
- static tree stop_reordering = NULL_TREE;
- static int initialized_p;
- tree current;
-
- /* Register STOP_REORDERING with the garbage collector. */
- if (!initialized_p)
- {
- ggc_add_tree_root (&stop_reordering, 1);
- initialized_p = 1;
- }
-
- for (current = gclass_list; current; current = TREE_CHAIN (current))
- {
- current_class = TREE_TYPE (TREE_VALUE (current));
-
- if (current_class == stop_reordering)
- break;
-
- /* Reverse the fields, but leave the dummy field in front.
- Fields are already ordered for Object and Class */
- if (TYPE_FIELDS (current_class) && current_class != object_type_node
- && current_class != class_type_node)
- {
- /* If the dummy field is there, reverse the right fields and
- just layout the type for proper fields offset */
- if (!DECL_NAME (TYPE_FIELDS (current_class)))
- {
- tree fields = TYPE_FIELDS (current_class);
- TREE_CHAIN (fields) = nreverse (TREE_CHAIN (fields));
- TYPE_SIZE (current_class) = NULL_TREE;
- }
- /* We don't have a dummy field, we need to layout the class,
- after having reversed the fields */
- else
- {
- TYPE_FIELDS (current_class) =
- nreverse (TYPE_FIELDS (current_class));
- TYPE_SIZE (current_class) = NULL_TREE;
- }
- }
- }
- /* There are cases were gclass_list will be empty. */
- if (gclass_list)
- stop_reordering = TREE_TYPE (TREE_VALUE (gclass_list));
-}
-
-/* Layout the methods of all classes loaded in one way or another.
- Check methods of source parsed classes. Then reorder the
- fields and layout the classes or the type of all source parsed
- classes */
-
-void
-java_layout_classes ()
-{
- tree current;
- int save_error_count = java_error_count;
-
- /* Layout the methods of all classes seen so far */
- java_layout_seen_class_methods ();
- java_parse_abort_on_error ();
- all_class_list = NULL_TREE;
-
- /* Then check the methods of all parsed classes */
- for (current = gclass_list; current; current = TREE_CHAIN (current))
- if (CLASS_FROM_SOURCE_P (TREE_TYPE (TREE_VALUE (current))))
- java_check_methods (TREE_VALUE (current));
- java_parse_abort_on_error ();
-
- for (current = gclass_list; current; current = TREE_CHAIN (current))
- {
- current_class = TREE_TYPE (TREE_VALUE (current));
- layout_class (current_class);
-
- /* Error reported by the caller */
- if (java_error_count)
- return;
- }
-
- /* We might have reloaded classes durign the process of laying out
- classes for code generation. We must layout the methods of those
- late additions, as constructor checks might use them */
- java_layout_seen_class_methods ();
- java_parse_abort_on_error ();
-}
-
-/* Expand methods in the current set of classes rememebered for
- generation. */
-
-static void
-java_complete_expand_classes ()
-{
- tree current;
-
- do_not_fold = flag_emit_xref;
-
- for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
- if (!INNER_CLASS_DECL_P (current))
- java_complete_expand_class (current);
-}
-
-/* Expand the methods found in OUTER, starting first by OUTER's inner
- classes, if any. */
-
-static void
-java_complete_expand_class (outer)
- tree outer;
-{
- tree inner_list;
-
- set_nested_class_simple_name_value (outer, 1); /* Set */
-
- /* We need to go after all inner classes and start expanding them,
- starting with most nested ones. We have to do that because nested
- classes might add functions to outer classes */
-
- for (inner_list = DECL_INNER_CLASS_LIST (outer);
- inner_list; inner_list = TREE_CHAIN (inner_list))
- java_complete_expand_class (TREE_PURPOSE (inner_list));
-
- java_complete_expand_methods (outer);
- set_nested_class_simple_name_value (outer, 0); /* Reset */
-}
-
-/* Expand methods registered in CLASS_DECL. The general idea is that
- we expand regular methods first. This allows us get an estimate on
- how outer context local alias fields are really used so we can add
- to the constructor just enough code to initialize them properly (it
- also lets us generate finit$ correctly.) Then we expand the
- constructors and then <clinit>. */
-
-static void
-java_complete_expand_methods (class_decl)
- tree class_decl;
-{
- tree clinit, decl, first_decl;
-
- current_class = TREE_TYPE (class_decl);
-
- /* Initialize a new constant pool */
- init_outgoing_cpool ();
-
- /* Pre-expand <clinit> to figure whether we really need it or
- not. If we do need it, we pre-expand the static fields so they're
- ready to be used somewhere else. <clinit> will be fully expanded
- after we processed the constructors. */
- first_decl = TYPE_METHODS (current_class);
- clinit = maybe_generate_pre_expand_clinit (current_class);
-
- /* Then generate finit$ (if we need to) because constructors will
- try to use it.*/
- if (TYPE_FINIT_STMT_LIST (current_class))
- java_complete_expand_method (generate_finit (current_class));
-
- /* Then generate instinit$ (if we need to) because constructors will
- try to use it. */
- if (TYPE_II_STMT_LIST (current_class))
- java_complete_expand_method (generate_instinit (current_class));
-
- /* Now do the constructors */
- for (decl = first_decl ; !java_error_count && decl; decl = TREE_CHAIN (decl))
- {
- int no_body;
-
- if (!DECL_CONSTRUCTOR_P (decl))
- continue;
-
- no_body = !DECL_FUNCTION_BODY (decl);
- /* Don't generate debug info on line zero when expanding a
- generated constructor. */
- if (no_body)
- restore_line_number_status (1);
-
- java_complete_expand_method (decl);
-
- if (no_body)
- restore_line_number_status (0);
- }
-
- /* First, do the ordinary methods. */
- for (decl = first_decl; decl; decl = TREE_CHAIN (decl))
- {
- /* Ctors aren't part of this batch. */
- if (DECL_CONSTRUCTOR_P (decl) || DECL_CLINIT_P (decl))
- continue;
-
- /* Skip abstract or native methods -- but do handle native
- methods when generating JNI stubs. */
- if (METHOD_ABSTRACT (decl) || (! flag_jni && METHOD_NATIVE (decl)))
- {
- DECL_FUNCTION_BODY (decl) = NULL_TREE;
- continue;
- }
-
- if (METHOD_NATIVE (decl))
- {
- tree body;
- current_function_decl = decl;
- body = build_jni_stub (decl);
- BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (decl)) = body;
- }
-
- java_complete_expand_method (decl);
- }
-
- /* If there is indeed a <clinit>, fully expand it now */
- if (clinit)
- {
- /* Prevent the use of `this' inside <clinit> */
- ctxp->explicit_constructor_p = 1;
- java_complete_expand_method (clinit);
- ctxp->explicit_constructor_p = 0;
- }
-
- /* We might have generated a class$ that we now want to expand */
- if (TYPE_DOT_CLASS (current_class))
- java_complete_expand_method (TYPE_DOT_CLASS (current_class));
-
- /* Now verify constructor circularity (stop after the first one we
- prove wrong.) */
- if (!CLASS_INTERFACE (class_decl))
- for (decl = TYPE_METHODS (current_class); decl; decl = TREE_CHAIN (decl))
- if (DECL_CONSTRUCTOR_P (decl)
- && verify_constructor_circularity (decl, decl))
- break;
-
- /* Save the constant pool. We'll need to restore it later. */
- TYPE_CPOOL (current_class) = outgoing_cpool;
-}
-
-/* Attempt to create <clinit>. Pre-expand static fields so they can be
- safely used in some other methods/constructors. */
-
-static tree
-maybe_generate_pre_expand_clinit (class_type)
- tree class_type;
-{
- tree current, mdecl;
-
- if (!TYPE_CLINIT_STMT_LIST (class_type))
- return NULL_TREE;
-
- /* Go through all static fields and pre expand them */
- for (current = TYPE_FIELDS (class_type); current;
- current = TREE_CHAIN (current))
- if (FIELD_STATIC (current))
- build_field_ref (NULL_TREE, class_type, DECL_NAME (current));
-
- /* Then build the <clinit> method */
- mdecl = create_artificial_method (class_type, ACC_STATIC, void_type_node,
- clinit_identifier_node, end_params_node);
- layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
- mdecl, NULL_TREE);
- start_artificial_method_body (mdecl);
-
- /* We process the list of assignment we produced as the result of
- the declaration of initialized static field and add them as
- statement to the <clinit> method. */
- for (current = TYPE_CLINIT_STMT_LIST (class_type); current;
- current = TREE_CHAIN (current))
- {
- tree stmt = current;
- /* We build the assignment expression that will initialize the
- field to its value. There are strict rules on static
- initializers (8.5). FIXME */
- if (TREE_CODE (stmt) != BLOCK && stmt != empty_stmt_node)
- stmt = build_debugable_stmt (EXPR_WFL_LINECOL (stmt), stmt);
- java_method_add_stmt (mdecl, stmt);
- }
-
- end_artificial_method_body (mdecl);
-
- /* Now we want to place <clinit> as the last method (because we need
- it at least for interface so that it doesn't interfere with the
- dispatch table based lookup. */
- if (TREE_CHAIN (TYPE_METHODS (class_type)))
- {
- current = TREE_CHAIN (TYPE_METHODS (class_type));
- TYPE_METHODS (class_type) = current;
-
- while (TREE_CHAIN (current))
- current = TREE_CHAIN (current);
-
- TREE_CHAIN (current) = mdecl;
- TREE_CHAIN (mdecl) = NULL_TREE;
- }
-
- return mdecl;
-}
-
-/* Analyzes a method body and look for something that isn't a
- MODIFY_EXPR with a constant value. */
-
-static int
-analyze_clinit_body (this_class, bbody)
- tree this_class, bbody;
-{
- while (bbody)
- switch (TREE_CODE (bbody))
- {
- case BLOCK:
- bbody = BLOCK_EXPR_BODY (bbody);
- break;
-
- case EXPR_WITH_FILE_LOCATION:
- bbody = EXPR_WFL_NODE (bbody);
- break;
-
- case COMPOUND_EXPR:
- if (analyze_clinit_body (this_class, TREE_OPERAND (bbody, 0)))
- return 1;
- bbody = TREE_OPERAND (bbody, 1);
- break;
-
- case MODIFY_EXPR:
- /* If we're generating to class file and we're dealing with an
- array initialization, we return 1 to keep <clinit> */
- if (TREE_CODE (TREE_OPERAND (bbody, 1)) == NEW_ARRAY_INIT
- && flag_emit_class_files)
- return 1;
-
- /* There are a few cases where we're required to keep
- <clinit>:
- - If this is an assignment whose operand is not constant,
- - If this is an assignment to a non-initialized field,
- - If this field is not a member of the current class.
- */
- return (! TREE_CONSTANT (TREE_OPERAND (bbody, 1))
- || ! DECL_INITIAL (TREE_OPERAND (bbody, 0))
- || DECL_CONTEXT (TREE_OPERAND (bbody, 0)) != this_class);
-
- default:
- return 1;
- }
- return 0;
-}
-
-
-/* See whether we could get rid of <clinit>. Criteria are: all static
- final fields have constant initial values and the body of <clinit>
- is empty. Return 1 if <clinit> was discarded, 0 otherwise. */
-
-static int
-maybe_yank_clinit (mdecl)
- tree mdecl;
-{
- tree type, current;
- tree fbody, bbody;
-
- if (!DECL_CLINIT_P (mdecl))
- return 0;
-
- /* If the body isn't empty, then we keep <clinit>. Note that if
- we're emitting classfiles, this isn't enough not to rule it
- out. */
- fbody = DECL_FUNCTION_BODY (mdecl);
- bbody = BLOCK_EXPR_BODY (fbody);
- if (bbody && bbody != error_mark_node)
- bbody = BLOCK_EXPR_BODY (bbody);
- else
- return 0;
- if (bbody && ! flag_emit_class_files && bbody != empty_stmt_node)
- return 0;
-
- type = DECL_CONTEXT (mdecl);
- current = TYPE_FIELDS (type);
-
- for (current = (current ? TREE_CHAIN (current) : current);
- current; current = TREE_CHAIN (current))
- {
- tree f_init;
-
- /* We're not interested in non-static fields. */
- if (!FIELD_STATIC (current))
- continue;
-
- /* Nor in fields without initializers. */
- f_init = DECL_INITIAL (current);
- if (f_init == NULL_TREE)
- continue;
-
- /* Anything that isn't String or a basic type is ruled out -- or
- if we know how to deal with it (when doing things natively) we
- should generated an empty <clinit> so that SUID are computed
- correctly. */
- if (! JSTRING_TYPE_P (TREE_TYPE (current))
- && ! JNUMERIC_TYPE_P (TREE_TYPE (current)))
- return 0;
-
- if (! FIELD_FINAL (current) || ! TREE_CONSTANT (f_init))
- return 0;
- }
-
- /* Now we analyze the method body and look for something that
- isn't a MODIFY_EXPR */
- if (bbody != empty_stmt_node && analyze_clinit_body (type, bbody))
- return 0;
-
- /* Get rid of <clinit> in the class' list of methods */
- if (TYPE_METHODS (type) == mdecl)
- TYPE_METHODS (type) = TREE_CHAIN (mdecl);
- else
- for (current = TYPE_METHODS (type); current;
- current = TREE_CHAIN (current))
- if (TREE_CHAIN (current) == mdecl)
- {
- TREE_CHAIN (current) = TREE_CHAIN (mdecl);
- break;
- }
-
- return 1;
-}
-
-/* Install the argument from MDECL. Suitable to completion and
- expansion of mdecl's body. */
-
-static void
-start_complete_expand_method (mdecl)
- tree mdecl;
-{
- tree tem;
-
- pushlevel (1); /* Prepare for a parameter push */
- tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));
- DECL_ARGUMENTS (mdecl) = tem;
-
- for (; tem; tem = TREE_CHAIN (tem))
- {
- /* TREE_CHAIN (tem) will change after pushdecl. */
- tree next = TREE_CHAIN (tem);
- tree type = TREE_TYPE (tem);
- if (PROMOTE_PROTOTYPES
- && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)
- && INTEGRAL_TYPE_P (type))
- type = integer_type_node;
- DECL_ARG_TYPE (tem) = type;
- layout_decl (tem, 0);
- pushdecl (tem);
- /* Re-install the next so that the list is kept and the loop
- advances. */
- TREE_CHAIN (tem) = next;
- }
- pushdecl_force_head (DECL_ARGUMENTS (mdecl));
- lineno = DECL_SOURCE_LINE_FIRST (mdecl);
- build_result_decl (mdecl);
-}
-
-
-/* Complete and expand a method. */
-
-static void
-java_complete_expand_method (mdecl)
- tree mdecl;
-{
- tree fbody, block_body, exception_copy;
-
- current_function_decl = mdecl;
- /* Fix constructors before expanding them */
- if (DECL_CONSTRUCTOR_P (mdecl))
- fix_constructors (mdecl);
-
- /* Expand functions that have a body */
- if (!DECL_FUNCTION_BODY (mdecl))
- return;
-
- fbody = DECL_FUNCTION_BODY (mdecl);
- block_body = BLOCK_EXPR_BODY (fbody);
- exception_copy = NULL_TREE;
-
- current_function_decl = mdecl;
-
- if (! quiet_flag)
- fprintf (stderr, " [%s.",
- lang_printable_name (DECL_CONTEXT (mdecl), 0));
- announce_function (mdecl);
- if (! quiet_flag)
- fprintf (stderr, "]");
-
- /* Prepare the function for tree completion */
- start_complete_expand_method (mdecl);
-
- /* Install the current this */
- current_this = (!METHOD_STATIC (mdecl) ?
- BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (mdecl)) : NULL_TREE);
-
- /* Purge the `throws' list of unchecked exceptions (we save a copy
- of the list and re-install it later.) */
- exception_copy = copy_list (DECL_FUNCTION_THROWS (mdecl));
- purge_unchecked_exceptions (mdecl);
-
- /* Install exceptions thrown with `throws' */
- PUSH_EXCEPTIONS (DECL_FUNCTION_THROWS (mdecl));
-
- if (block_body != NULL_TREE)
- {
- block_body = java_complete_tree (block_body);
-
- /* Before we check initialization, attached all class initialization
- variable to the block_body */
- hash_traverse (&DECL_FUNCTION_INIT_TEST_TABLE (mdecl),
- attach_init_test_initialization_flags, block_body);
-
- if (! flag_emit_xref && ! METHOD_NATIVE (mdecl))
- {
- check_for_initialization (block_body, mdecl);
-
- /* Go through all the flags marking the initialization of
- static variables and see whether they're definitively
- assigned, in which case the type is remembered as
- definitively initialized in MDECL. */
- if (STATIC_CLASS_INIT_OPT_P ())
- {
- /* Always register the context as properly initialized in
- MDECL. This used with caution helps removing extra
- initialization of self. */
- if (METHOD_STATIC (mdecl))
- hash_lookup (&DECL_FUNCTION_INITIALIZED_CLASS_TABLE (mdecl),
- (hash_table_key) DECL_CONTEXT (mdecl),
- TRUE, NULL);
- }
- }
- ctxp->explicit_constructor_p = 0;
- }
-
- BLOCK_EXPR_BODY (fbody) = block_body;
-
- /* If we saw a return but couldn't evaluate it properly, we'll have
- an error_mark_node here. */
- if (block_body != error_mark_node
- && (block_body == NULL_TREE || CAN_COMPLETE_NORMALLY (block_body))
- && TREE_CODE (TREE_TYPE (TREE_TYPE (mdecl))) != VOID_TYPE
- && !flag_emit_xref)
- missing_return_error (current_function_decl);
-
- /* See if we can get rid of <clinit> if MDECL happens to be <clinit> */
- maybe_yank_clinit (mdecl);
-
- /* Pop the current level, with special measures if we found errors. */
- if (java_error_count)
- pushdecl_force_head (DECL_ARGUMENTS (mdecl));
- poplevel (1, 0, 1);
-
- /* Pop the exceptions and sanity check */
- POP_EXCEPTIONS();
- if (currently_caught_type_list)
- abort ();
-
- /* Restore the copy of the list of exceptions if emitting xrefs. */
- DECL_FUNCTION_THROWS (mdecl) = exception_copy;
-}
-
-/* For with each class for which there's code to generate. */
-
-static void
-java_expand_method_bodies (class)
- tree class;
-{
- tree decl;
- for (decl = TYPE_METHODS (class); decl; decl = TREE_CHAIN (decl))
- {
- if (!DECL_FUNCTION_BODY (decl))
- continue;
-
- current_function_decl = decl;
-
- /* It's time to assign the variable flagging static class
- initialization based on which classes invoked static methods
- are definitely initializing. This should be flagged. */
- if (STATIC_CLASS_INIT_OPT_P ())
- {
- tree list = DECL_FUNCTION_STATIC_METHOD_INVOCATION_COMPOUND (decl);
- for (; list != NULL_TREE; list = TREE_CHAIN (list))
- {
- /* Executed for each statement calling a static function.
- LIST is a TREE_LIST whose PURPOSE is the called function
- and VALUE is a compound whose second operand can be patched
- with static class initialization flag assignments. */
-
- tree called_method = TREE_PURPOSE (list);
- tree compound = TREE_VALUE (list);
- tree assignment_compound_list
- = build_tree_list (called_method, NULL);
-
- /* For each class definitely initialized in
- CALLED_METHOD, fill ASSIGNMENT_COMPOUND with
- assignment to the class initialization flag. */
- hash_traverse (&DECL_FUNCTION_INITIALIZED_CLASS_TABLE (called_method),
- emit_test_initialization,
- assignment_compound_list);
-
- if (TREE_VALUE (assignment_compound_list))
- TREE_OPERAND (compound, 1)
- = TREE_VALUE (assignment_compound_list);
- }
- }
-
- /* Prepare the function for RTL expansion */
- start_complete_expand_method (decl);
-
- /* Expand function start, generate initialization flag
- assignment, and handle synchronized methods. */
- complete_start_java_method (decl);
-
- /* Expand the rest of the function body and terminate
- expansion. */
- source_end_java_method ();
- }
-}
-
-\f
-
-/* This section of the code deals with accessing enclosing context
- fields either directly by using the relevant access to this$<n> or
- by invoking an access method crafted for that purpose. */
-
-/* Build the necessary access from an inner class to an outer
- class. This routine could be optimized to cache previous result
- (decl, current_class and returned access). When an access method
- needs to be generated, it always takes the form of a read. It might
- be later turned into a write by calling outer_field_access_fix. */
-
-static tree
-build_outer_field_access (id, decl)
- tree id, decl;
-{
- tree access = NULL_TREE;
- tree ctx = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current_class)));
- tree decl_ctx = DECL_CONTEXT (decl);
-
- /* If the immediate enclosing context of the current class is the
- field decl's class or inherits from it; build the access as
- `this$<n>.<field>'. Note that we will break the `private' barrier
- if we're not emitting bytecodes. */
- if ((ctx == decl_ctx || inherits_from_p (ctx, decl_ctx))
- && (!FIELD_PRIVATE (decl) || !flag_emit_class_files ))
- {
- tree thisn = build_current_thisn (current_class);
- access = make_qualified_primary (build_wfl_node (thisn),
- id, EXPR_WFL_LINECOL (id));
- }
- /* Otherwise, generate access methods to outer this and access the
- field (either using an access method or by direct access.) */
- else
- {
- int lc = EXPR_WFL_LINECOL (id);
-
- /* Now we chain the required number of calls to the access$0 to
- get a hold to the enclosing instance we need, and then we
- build the field access. */
- access = build_access_to_thisn (current_class, decl_ctx, lc);
-
- /* If the field is private and we're generating bytecode, then
- we generate an access method */
- if (FIELD_PRIVATE (decl) && flag_emit_class_files )
- {
- tree name = build_outer_field_access_methods (decl);
- access = build_outer_field_access_expr (lc, decl_ctx,
- name, access, NULL_TREE);
- }
- /* Otherwise we use `access$(this$<j>). ... access$(this$<i>).<field>'.
- Once again we break the `private' access rule from a foreign
- class. */
- else
- access = make_qualified_primary (access, id, lc);
- }
- return resolve_expression_name (access, NULL);
-}
-
-/* Return a non zero value if NODE describes an outer field inner
- access. */
-
-static int
-outer_field_access_p (type, decl)
- tree type, decl;
-{
- if (!INNER_CLASS_TYPE_P (type)
- || TREE_CODE (decl) != FIELD_DECL
- || DECL_CONTEXT (decl) == type)
- return 0;
-
- /* If the inner class extends the declaration context of the field
- we're try to acces, then this isn't an outer field access */
- if (inherits_from_p (type, DECL_CONTEXT (decl)))
- return 0;
-
- for (type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))); ;
- type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))))
- {
- if (type == DECL_CONTEXT (decl))
- return 1;
-
- if (!DECL_CONTEXT (TYPE_NAME (type)))
- {
- /* Before we give up, see whether the field is inherited from
- the enclosing context we're considering. */
- if (inherits_from_p (type, DECL_CONTEXT (decl)))
- return 1;
- break;
- }
- }
-
- return 0;
-}
-
-/* Return a non zero value if NODE represents an outer field inner
- access that was been already expanded. As a side effect, it returns
- the name of the field being accessed and the argument passed to the
- access function, suitable for a regeneration of the access method
- call if necessary. */
-
-static int
-outer_field_expanded_access_p (node, name, arg_type, arg)
- tree node, *name, *arg_type, *arg;
-{
- int identified = 0;
-
- if (TREE_CODE (node) != CALL_EXPR)
- return 0;
-
- /* Well, gcj generates slightly different tree nodes when compiling
- to native or bytecodes. It's the case for function calls. */
-
- if (flag_emit_class_files
- && TREE_CODE (node) == CALL_EXPR
- && OUTER_FIELD_ACCESS_IDENTIFIER_P (DECL_NAME (TREE_OPERAND (node, 0))))
- identified = 1;
- else if (!flag_emit_class_files)
- {
- node = TREE_OPERAND (node, 0);
-
- if (node && TREE_OPERAND (node, 0)
- && TREE_CODE (TREE_OPERAND (node, 0)) == ADDR_EXPR)
- {
- node = TREE_OPERAND (node, 0);
- if (TREE_OPERAND (node, 0)
- && TREE_CODE (TREE_OPERAND (node, 0)) == FUNCTION_DECL
- && (OUTER_FIELD_ACCESS_IDENTIFIER_P
- (DECL_NAME (TREE_OPERAND (node, 0)))))
- identified = 1;
- }
- }
-
- if (identified && name && arg_type && arg)
- {
- tree argument = TREE_OPERAND (node, 1);
- *name = DECL_NAME (TREE_OPERAND (node, 0));
- *arg_type = TREE_TYPE (TREE_TYPE (TREE_VALUE (argument)));
- *arg = TREE_VALUE (argument);
- }
- return identified;
-}
-
-/* Detect in NODE an outer field read access from an inner class and
- transform it into a write with RHS as an argument. This function is
- called from the java_complete_lhs when an assignment to a LHS can
- be identified. */
-
-static tree
-outer_field_access_fix (wfl, node, rhs)
- tree wfl, node, rhs;
-{
- tree name, arg_type, arg;
-
- if (outer_field_expanded_access_p (node, &name, &arg_type, &arg))
- {
- node = build_outer_field_access_expr (EXPR_WFL_LINECOL (wfl),
- arg_type, name, arg, rhs);
- return java_complete_tree (node);
- }
- return NULL_TREE;
-}
-
-/* Construct the expression that calls an access method:
- <type>.access$<n>(<arg1> [, <arg2>]);
-
- ARG2 can be NULL and will be omitted in that case. It will denote a
- read access. */
-
-static tree
-build_outer_field_access_expr (lc, type, access_method_name, arg1, arg2)
- int lc;
- tree type, access_method_name, arg1, arg2;
-{
- tree args, cn, access;
-
- args = arg1 ? arg1 :
- build_wfl_node (build_current_thisn (current_class));
- args = build_tree_list (NULL_TREE, args);
-
- if (arg2)
- args = tree_cons (NULL_TREE, arg2, args);
-
- access = build_method_invocation (build_wfl_node (access_method_name), args);
- cn = build_wfl_node (DECL_NAME (TYPE_NAME (type)));
- return make_qualified_primary (cn, access, lc);
-}
-
-static tree
-build_new_access_id ()
-{
- static int access_n_counter = 1;
- char buffer [128];
-
- sprintf (buffer, "access$%d", access_n_counter++);
- return get_identifier (buffer);
-}
-
-/* Create the static access functions for the outer field DECL. We define a
- read:
- TREE_TYPE (<field>) access$<n> (DECL_CONTEXT (<field>) inst$) {
- return inst$.field;
- }
- and a write access:
- TREE_TYPE (<field>) access$<n> (DECL_CONTEXT (<field>) inst$,
- TREE_TYPE (<field>) value$) {
- return inst$.field = value$;
- }
- We should have a usage flags on the DECL so we can lazily turn the ones
- we're using for code generation. FIXME.
-*/
-
-static tree
-build_outer_field_access_methods (decl)
- tree decl;
-{
- tree id, args, stmt, mdecl;
-
- if (FIELD_INNER_ACCESS_P (decl))
- return FIELD_INNER_ACCESS (decl);
-
- MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
-
- /* Create the identifier and a function named after it. */
- id = build_new_access_id ();
-
- /* The identifier is marked as bearing the name of a generated write
- access function for outer field accessed from inner classes. */
- OUTER_FIELD_ACCESS_IDENTIFIER_P (id) = 1;
-
- /* Create the read access */
- args = build_tree_list (inst_id, build_pointer_type (DECL_CONTEXT (decl)));
- TREE_CHAIN (args) = end_params_node;
- stmt = make_qualified_primary (build_wfl_node (inst_id),
- build_wfl_node (DECL_NAME (decl)), 0);
- stmt = build_return (0, stmt);
- mdecl = build_outer_field_access_method (DECL_CONTEXT (decl),
- TREE_TYPE (decl), id, args, stmt);
- DECL_FUNCTION_ACCESS_DECL (mdecl) = decl;
-
- /* Create the write access method. No write access for final variable */
- if (!FIELD_FINAL (decl))
- {
- args = build_tree_list (inst_id,
- build_pointer_type (DECL_CONTEXT (decl)));
- TREE_CHAIN (args) = build_tree_list (wpv_id, TREE_TYPE (decl));
- TREE_CHAIN (TREE_CHAIN (args)) = end_params_node;
- stmt = make_qualified_primary (build_wfl_node (inst_id),
- build_wfl_node (DECL_NAME (decl)), 0);
- stmt = build_return (0, build_assignment (ASSIGN_TK, 0, stmt,
- build_wfl_node (wpv_id)));
- mdecl = build_outer_field_access_method (DECL_CONTEXT (decl),
- TREE_TYPE (decl), id,
- args, stmt);
- }
- DECL_FUNCTION_ACCESS_DECL (mdecl) = decl;
-
- /* Return the access name */
- return FIELD_INNER_ACCESS (decl) = id;
-}
-
-/* Build an field access method NAME. */
-
-static tree
-build_outer_field_access_method (class, type, name, args, body)
- tree class, type, name, args, body;
-{
- tree saved_current_function_decl, mdecl;
-
- /* Create the method */
- mdecl = create_artificial_method (class, ACC_STATIC, type, name, args);
- fix_method_argument_names (args, mdecl);
- layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
-
- /* Attach the method body. */
- saved_current_function_decl = current_function_decl;
- start_artificial_method_body (mdecl);
- java_method_add_stmt (mdecl, body);
- end_artificial_method_body (mdecl);
- current_function_decl = saved_current_function_decl;
-
- return mdecl;
-}
-
-\f
-/* This section deals with building access function necessary for
- certain kinds of method invocation from inner classes. */
-
-static tree
-build_outer_method_access_method (decl)
- tree decl;
-{
- tree saved_current_function_decl, mdecl;
- tree args = NULL_TREE, call_args = NULL_TREE;
- tree carg, id, body, class;
- char buffer [80];
- int parm_id_count = 0;
-
- /* Test this abort with an access to a private field */
- if (!strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)), "access$"))
- abort ();
-
- /* Check the cache first */
- if (DECL_FUNCTION_INNER_ACCESS (decl))
- return DECL_FUNCTION_INNER_ACCESS (decl);
-
- class = DECL_CONTEXT (decl);
-
- /* Obtain an access identifier and mark it */
- id = build_new_access_id ();
- OUTER_FIELD_ACCESS_IDENTIFIER_P (id) = 1;
-
- carg = TYPE_ARG_TYPES (TREE_TYPE (decl));
- /* Create the arguments, as much as the original */
- for (; carg && carg != end_params_node;
- carg = TREE_CHAIN (carg))
- {
- sprintf (buffer, "write_parm_value$%d", parm_id_count++);
- args = chainon (args, build_tree_list (get_identifier (buffer),
- TREE_VALUE (carg)));
- }
- args = chainon (args, end_params_node);
-
- /* Create the method */
- mdecl = create_artificial_method (class, ACC_STATIC,
- TREE_TYPE (TREE_TYPE (decl)), id, args);
- layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
- /* There is a potential bug here. We should be able to use
- fix_method_argument_names, but then arg names get mixed up and
- eventually a constructor will have its this$0 altered and the
- outer context won't be assignment properly. The test case is
- stub.java FIXME */
- TYPE_ARG_TYPES (TREE_TYPE (mdecl)) = args;
-
- /* Attach the method body. */
- saved_current_function_decl = current_function_decl;
- start_artificial_method_body (mdecl);
-
- /* The actual method invocation uses the same args. When invoking a
- static methods that way, we don't want to skip the first
- argument. */
- carg = args;
- if (!METHOD_STATIC (decl))
- carg = TREE_CHAIN (carg);
- for (; carg && carg != end_params_node; carg = TREE_CHAIN (carg))
- call_args = tree_cons (NULL_TREE, build_wfl_node (TREE_PURPOSE (carg)),
- call_args);
-
- body = build_method_invocation (build_wfl_node (DECL_NAME (decl)),
- call_args);
- if (!METHOD_STATIC (decl))
- body = make_qualified_primary (build_wfl_node (TREE_PURPOSE (args)),
- body, 0);
- if (TREE_TYPE (TREE_TYPE (decl)) != void_type_node)
- body = build_return (0, body);
- java_method_add_stmt (mdecl,body);
- end_artificial_method_body (mdecl);
- current_function_decl = saved_current_function_decl;
-
- /* Back tag the access function so it know what it accesses */
- DECL_FUNCTION_ACCESS_DECL (decl) = mdecl;
-
- /* Tag the current method so it knows it has an access generated */
- return DECL_FUNCTION_INNER_ACCESS (decl) = mdecl;
-}
-
-\f
-/* This section of the code deals with building expressions to access
- the enclosing instance of an inner class. The enclosing instance is
- kept in a generated field called this$<n>, with <n> being the
- inner class nesting level (starting from 0.) */
-
-/* Build an access to a given this$<n>, always chaining access call to
- others. Access methods to this$<n> are build on the fly if
- necessary. This CAN'T be used to solely access this$<n-1> from
- this$<n> (which alway yield to special cases and optimization, see
- for example build_outer_field_access). */
-
-static tree
-build_access_to_thisn (from, to, lc)
- tree from, to;
- int lc;
-{
- tree access = NULL_TREE;
-
- while (from != to && PURE_INNER_CLASS_TYPE_P (from))
- {
- if (!access)
- {
- access = build_current_thisn (from);
- access = build_wfl_node (access);
- }
- else
- {
- tree access0_wfl, cn;
-
- maybe_build_thisn_access_method (from);
- access0_wfl = build_wfl_node (access0_identifier_node);
- cn = build_wfl_node (DECL_NAME (TYPE_NAME (from)));
- EXPR_WFL_LINECOL (access0_wfl) = lc;
- access = build_tree_list (NULL_TREE, access);
- access = build_method_invocation (access0_wfl, access);
- access = make_qualified_primary (cn, access, lc);
- }
-
- /* If FROM isn't an inner class, that's fine, we've done enough.
- What we're looking for can be accessed from there. */
- from = DECL_CONTEXT (TYPE_NAME (from));
- if (!from)
- break;
- from = TREE_TYPE (from);
- }
- return access;
-}
-
-/* Build an access function to the this$<n> local to TYPE. NULL_TREE
- is returned if nothing needs to be generated. Otherwise, the method
- generated and a method decl is returned.
-
- NOTE: These generated methods should be declared in a class file
- attribute so that they can't be referred to directly. */
-
-static tree
-maybe_build_thisn_access_method (type)
- tree type;
-{
- tree mdecl, args, stmt, rtype;
- tree saved_current_function_decl;
-
- /* If TYPE is a top-level class, no access method is required.
- If there already is such an access method, bail out. */
- if (CLASS_ACCESS0_GENERATED_P (type) || !PURE_INNER_CLASS_TYPE_P (type))
- return NULL_TREE;
-
- /* We generate the method. The method looks like:
- static <outer_of_type> access$0 (<type> inst$) { return inst$.this$<n>; }
- */
- args = build_tree_list (inst_id, build_pointer_type (type));
- TREE_CHAIN (args) = end_params_node;
- rtype = build_pointer_type (TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))));
- mdecl = create_artificial_method (type, ACC_STATIC, rtype,
- access0_identifier_node, args);
- fix_method_argument_names (args, mdecl);
- layout_class_method (type, NULL_TREE, mdecl, NULL_TREE);
- stmt = build_current_thisn (type);
- stmt = make_qualified_primary (build_wfl_node (inst_id),
- build_wfl_node (stmt), 0);
- stmt = build_return (0, stmt);
-
- saved_current_function_decl = current_function_decl;
- start_artificial_method_body (mdecl);
- java_method_add_stmt (mdecl, stmt);
- end_artificial_method_body (mdecl);
- current_function_decl = saved_current_function_decl;
-
- CLASS_ACCESS0_GENERATED_P (type) = 1;
-
- return mdecl;
-}
-
-/* Craft an correctly numbered `this$<n>'string. this$0 is used for
- the first level of innerclassing. this$1 for the next one, etc...
- This function can be invoked with TYPE to NULL, available and then
- has to count the parser context. */
-
-static tree
-build_current_thisn (type)
- tree type;
-{
- static int saved_i = -1;
- static tree saved_thisn = NULL_TREE;
- static tree saved_type = NULL_TREE;
- static int saved_type_i = 0;
- static int initialized_p;
- tree decl;
- char buffer [24];
- int i = 0;
-
- /* Register SAVED_THISN and SAVED_TYPE with the garbage collector. */
- if (!initialized_p)
- {
- ggc_add_tree_root (&saved_thisn, 1);
- ggc_add_tree_root (&saved_type, 1);
- initialized_p = 1;
- }
-
- if (type)
- {
- if (type == saved_type)
- i = saved_type_i;
- else
- {
- for (i = -1, decl = DECL_CONTEXT (TYPE_NAME (type));
- decl; decl = DECL_CONTEXT (decl), i++)
- ;
-
- saved_type = type;
- saved_type_i = i;
- }
- }
- else
- i = list_length (GET_CPC_LIST ())-2;
-
- if (i == saved_i)
- return saved_thisn;
-
- sprintf (buffer, "this$%d", i);
- saved_i = i;
- saved_thisn = get_identifier (buffer);
- return saved_thisn;
-}
-
-/* Return the assignement to the hidden enclosing context `this$<n>'
- by the second incoming parameter to the innerclass constructor. The
- form used is `this.this$<n> = this$<n>;'. */
-
-static tree
-build_thisn_assign ()
-{
- if (current_class && PURE_INNER_CLASS_TYPE_P (current_class))
- {
- tree thisn = build_current_thisn (current_class);
- tree lhs = make_qualified_primary (build_wfl_node (this_identifier_node),
- build_wfl_node (thisn), 0);
- tree rhs = build_wfl_node (thisn);
- EXPR_WFL_SET_LINECOL (lhs, lineno, 0);
- return build_assignment (ASSIGN_TK, EXPR_WFL_LINECOL (lhs), lhs, rhs);
- }
- return NULL_TREE;
-}
-
-\f
-/* Building the synthetic `class$' used to implement the `.class' 1.1
- extension for non primitive types. This method looks like:
-
- static Class class$(String type) throws NoClassDefFoundError
- {
- try {return (java.lang.Class.forName (String));}
- catch (ClassNotFoundException e) {
- throw new NoClassDefFoundError(e.getMessage());}
- } */
-
-static tree
-build_dot_class_method (class)
- tree class;
-{
-#define BWF(S) build_wfl_node (get_identifier ((S)))
-#define MQN(X,Y) make_qualified_name ((X), (Y), 0)
- tree args, tmp, saved_current_function_decl, mdecl;
- tree stmt, throw_stmt;
-
- static tree get_message_wfl, type_parm_wfl;
-
- if (!get_message_wfl)
- {
- get_message_wfl = build_wfl_node (get_identifier ("getMessage"));
- type_parm_wfl = build_wfl_node (get_identifier ("type$"));
- ggc_add_tree_root (&get_message_wfl, 1);
- ggc_add_tree_root (&type_parm_wfl, 1);
- }
-
- /* Build the arguments */
- args = build_tree_list (get_identifier ("type$"),
- build_pointer_type (string_type_node));
- TREE_CHAIN (args) = end_params_node;
-
- /* Build the qualified name java.lang.Class.forName */
- tmp = MQN (MQN (MQN (BWF ("java"),
- BWF ("lang")), BWF ("Class")), BWF ("forName"));
- load_class (class_not_found_type_node, 1);
- load_class (no_class_def_found_type_node, 1);
-
- /* Create the "class$" function */
- mdecl = create_artificial_method (class, ACC_STATIC,
- build_pointer_type (class_type_node),
- classdollar_identifier_node, args);
- DECL_FUNCTION_THROWS (mdecl) =
- build_tree_list (NULL_TREE, no_class_def_found_type_node);
-
- /* We start by building the try block. We need to build:
- return (java.lang.Class.forName (type)); */
- stmt = build_method_invocation (tmp,
- build_tree_list (NULL_TREE, type_parm_wfl));
- stmt = build_return (0, stmt);
-
- /* Now onto the catch block. We start by building the expression
- throwing a new exception: throw new NoClassDefFoundError (_.getMessage) */
- throw_stmt = make_qualified_name (build_wfl_node (wpv_id),
- get_message_wfl, 0);
- throw_stmt = build_method_invocation (throw_stmt, NULL_TREE);
-
- /* Build new NoClassDefFoundError (_.getMessage) */
- throw_stmt = build_new_invocation
- (build_wfl_node (get_identifier ("NoClassDefFoundError")),
- build_tree_list (build_pointer_type (string_type_node), throw_stmt));
-
- /* Build the throw, (it's too early to use BUILD_THROW) */
- throw_stmt = build1 (THROW_EXPR, NULL_TREE, throw_stmt);
-
- /* Encapsulate STMT in a try block. The catch clause executes THROW_STMT */
- stmt = encapsulate_with_try_catch (0, class_not_found_type_node,
- stmt, throw_stmt);
-
- fix_method_argument_names (args, mdecl);
- layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
- saved_current_function_decl = current_function_decl;
- start_artificial_method_body (mdecl);
- java_method_add_stmt (mdecl, stmt);
- end_artificial_method_body (mdecl);
- current_function_decl = saved_current_function_decl;
- TYPE_DOT_CLASS (class) = mdecl;
-
- return mdecl;
-}
-
-static tree
-build_dot_class_method_invocation (type)
- tree type;
-{
- tree sig_id, s;
-
- if (TYPE_ARRAY_P (type))
- sig_id = build_java_signature (type);
- else
- sig_id = DECL_NAME (TYPE_NAME (type));
-
- /* Ensure that the proper name separator is used */
- sig_id = unmangle_classname (IDENTIFIER_POINTER (sig_id),
- IDENTIFIER_LENGTH (sig_id));
-
- s = build_string (IDENTIFIER_LENGTH (sig_id),
- IDENTIFIER_POINTER (sig_id));
- return build_method_invocation (build_wfl_node (classdollar_identifier_node),
- build_tree_list (NULL_TREE, s));
-}
-
-/* This section of the code deals with constructor. */
-
-/* Craft a body for default constructor. Patch existing constructor
- bodies with call to super() and field initialization statements if
- necessary. */
-
-static void
-fix_constructors (mdecl)
- tree mdecl;
-{
- tree iii; /* Instance Initializer Invocation */
- tree body = DECL_FUNCTION_BODY (mdecl);
- tree thisn_assign, compound = NULL_TREE;
- tree class_type = DECL_CONTEXT (mdecl);
-
- if (DECL_FIXED_CONSTRUCTOR_P (mdecl))
- return;
- DECL_FIXED_CONSTRUCTOR_P (mdecl) = 1;
-
- if (!body)
- {
- /* It is an error for the compiler to generate a default
- constructor if the superclass doesn't have a constructor that
- takes no argument, or the same args for an anonymous class */
- if (verify_constructor_super (mdecl))
- {
- tree sclass_decl = TYPE_NAME (CLASSTYPE_SUPER (class_type));
- tree save = DECL_NAME (mdecl);
- const char *n = IDENTIFIER_POINTER (DECL_NAME (sclass_decl));
- DECL_NAME (mdecl) = DECL_NAME (sclass_decl);
- parse_error_context
- (lookup_cl (TYPE_NAME (class_type)),
- "No constructor matching `%s' found in class `%s'",
- lang_printable_name (mdecl, 0), n);
- DECL_NAME (mdecl) = save;
- }
-
- /* The constructor body must be crafted by hand. It's the
- constructor we defined when we realize we didn't have the
- CLASSNAME() constructor */
- start_artificial_method_body (mdecl);
-
- /* Insert an assignment to the this$<n> hidden field, if
- necessary */
- if ((thisn_assign = build_thisn_assign ()))
- java_method_add_stmt (mdecl, thisn_assign);
-
- /* We don't generate a super constructor invocation if we're
- compiling java.lang.Object. build_super_invocation takes care
- of that. */
- java_method_add_stmt (mdecl, build_super_invocation (mdecl));
-
- /* FIXME */
- if ((iii = build_instinit_invocation (class_type)))
- java_method_add_stmt (mdecl, iii);
-
- end_artificial_method_body (mdecl);
- }
- /* Search for an explicit constructor invocation */
- else
- {
- int found = 0;
- int invokes_this = 0;
- tree found_call = NULL_TREE;
- tree main_block = BLOCK_EXPR_BODY (body);
-
- while (body)
- switch (TREE_CODE (body))
- {
- case CALL_EXPR:
- found = CALL_EXPLICIT_CONSTRUCTOR_P (body);
- if (CALL_THIS_CONSTRUCTOR_P (body))
- invokes_this = 1;
- body = NULL_TREE;
- break;
- case COMPOUND_EXPR:
- case EXPR_WITH_FILE_LOCATION:
- found_call = body;
- body = TREE_OPERAND (body, 0);
- break;
- case BLOCK:
- found_call = body;
- body = BLOCK_EXPR_BODY (body);
- break;
- default:
- found = 0;
- body = NULL_TREE;
- }
-
- /* Generate the assignment to this$<n>, if necessary */
- if ((thisn_assign = build_thisn_assign ()))
- compound = add_stmt_to_compound (compound, NULL_TREE, thisn_assign);
-
- /* The constructor is missing an invocation of super() */
- if (!found)
- compound = add_stmt_to_compound (compound, NULL_TREE,
- build_super_invocation (mdecl));
- /* Explicit super() invokation should take place before the
- instance initializer blocks. */
- else
- {
- compound = add_stmt_to_compound (compound, NULL_TREE,
- TREE_OPERAND (found_call, 0));
- TREE_OPERAND (found_call, 0) = empty_stmt_node;
- }
-
- DECL_INIT_CALLS_THIS (mdecl) = invokes_this;
-
- /* Insert the instance initializer block right after. */
- if (!invokes_this && (iii = build_instinit_invocation (class_type)))
- compound = add_stmt_to_compound (compound, NULL_TREE, iii);
-
- /* Fix the constructor main block if we're adding extra stmts */
- if (compound)
- {
- compound = add_stmt_to_compound (compound, NULL_TREE,
- BLOCK_EXPR_BODY (main_block));
- BLOCK_EXPR_BODY (main_block) = compound;
- }
- }
-}
-
-/* Browse constructors in the super class, searching for a constructor
- that doesn't take any argument. Return 0 if one is found, 1
- otherwise. If the current class is an anonymous inner class, look
- for something that has the same signature. */
-
-static int
-verify_constructor_super (mdecl)
- tree mdecl;
-{
- tree class = CLASSTYPE_SUPER (current_class);
- int super_inner = PURE_INNER_CLASS_TYPE_P (class);
- tree sdecl;
-
- if (!class)
- return 0;
-
- if (ANONYMOUS_CLASS_P (current_class))
- {
- tree mdecl_arg_type;
- SKIP_THIS_AND_ARTIFICIAL_PARMS (mdecl_arg_type, mdecl);
- for (sdecl = TYPE_METHODS (class); sdecl; sdecl = TREE_CHAIN (sdecl))
- if (DECL_CONSTRUCTOR_P (sdecl))
- {
- tree m_arg_type;
- tree arg_type = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (sdecl)));
- if (super_inner)
- arg_type = TREE_CHAIN (arg_type);
- for (m_arg_type = mdecl_arg_type;
- (arg_type != end_params_node
- && m_arg_type != end_params_node);
- arg_type = TREE_CHAIN (arg_type),
- m_arg_type = TREE_CHAIN (m_arg_type))
- if (!valid_method_invocation_conversion_p
- (TREE_VALUE (arg_type),
- TREE_VALUE (m_arg_type)))
- break;
-
- if (arg_type == end_params_node && m_arg_type == end_params_node)
- return 0;
- }
- }
- else
- {
- for (sdecl = TYPE_METHODS (class); sdecl; sdecl = TREE_CHAIN (sdecl))
- {
- tree arg = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (sdecl)));
- if (super_inner)
- arg = TREE_CHAIN (arg);
- if (DECL_CONSTRUCTOR_P (sdecl) && arg == end_params_node)
- return 0;
- }
- }
- return 1;
-}
-
-/* Generate code for all context remembered for code generation. */
-
-void
-java_expand_classes ()
-{
- int save_error_count = 0;
- static struct parser_ctxt *cur_ctxp = NULL;
-
- java_parse_abort_on_error ();
- if (!(ctxp = ctxp_for_generation))
- return;
- java_layout_classes ();
- java_parse_abort_on_error ();
-
- for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
- {
- ctxp = cur_ctxp;
- input_filename = ctxp->filename;
- lang_init_source (2); /* Error msgs have method prototypes */
- java_complete_expand_classes (); /* Complete and expand classes */
- java_parse_abort_on_error ();
- }
- input_filename = main_input_filename;
-
-
- /* Find anonymous classes and expand their constructor. This extra pass is
- neccessary because the constructor itself is only generated when the
- method in which it is defined is expanded. */
- for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
- {
- tree current;
- ctxp = cur_ctxp;
- for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
- {
- current_class = TREE_TYPE (current);
- if (ANONYMOUS_CLASS_P (current_class))
- {
- tree d;
- for (d = TYPE_METHODS (current_class); d; d = TREE_CHAIN (d))
- {
- if (DECL_CONSTRUCTOR_P (d))
- {
- restore_line_number_status (1);
- java_complete_expand_method (d);
- restore_line_number_status (0);
- break; /* There is only one constructor. */
- }
- }
- }
- }
- }
-
- /* If we've found error at that stage, don't try to generate
- anything, unless we're emitting xrefs or checking the syntax only
- (but not using -fsyntax-only for the purpose of generating
- bytecode. */
- if (java_error_count && !flag_emit_xref
- && (!flag_syntax_only && !flag_emit_class_files))
- return;
-
- /* Now things are stable, go for generation of the class data. */
-
- /* We pessimistically marked all fields external until we knew
- what set of classes we were planning to compile. Now mark
- those that will be generated locally as not external. */
- for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
- {
- tree current;
- ctxp = cur_ctxp;
- for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
- {
- tree class = TREE_TYPE (current);
- tree field;
- for (field = TYPE_FIELDS (class); field ; field = TREE_CHAIN (field))
- if (FIELD_STATIC (field))
- DECL_EXTERNAL (field) = 0;
- }
- }
-
- /* Compile the classes. */
- for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
- {
- tree current;
- tree reversed_class_list = NULL;
-
- ctxp = cur_ctxp;
-
- /* We write out the classes in reverse order. This ensures that
- inner classes are written before their containing classes,
- which is important for parallel builds. Otherwise, the
- class file for the outer class may be found, but the class
- file for the inner class may not be present. In that
- situation, the compiler cannot fall back to the original
- source, having already read the outer class, so we must
- prevent that situation. */
- for (current = ctxp->class_list;
- current;
- current = TREE_CHAIN (current))
- reversed_class_list
- = tree_cons (NULL_TREE, current, reversed_class_list);
- ggc_add_tree_root (&reversed_class_list, 1);
-
- for (current = reversed_class_list;
- current;
- current = TREE_CHAIN (current))
- {
- current_class = TREE_TYPE (TREE_VALUE (current));
- outgoing_cpool = TYPE_CPOOL (current_class);
- if (flag_emit_class_files)
- write_classfile (current_class);
- if (flag_emit_xref)
- expand_xref (current_class);
- else if (! flag_syntax_only)
- {
- java_expand_method_bodies (current_class);
- finish_class ();
- }
- }
-
- ggc_del_root (&reversed_class_list);
- }
-}
-
-/* Wrap non WFL PRIMARY around a WFL and set EXPR_WFL_QUALIFICATION to
- a tree list node containing RIGHT. Fore coming RIGHTs will be
- chained to this hook. LOCATION contains the location of the
- separating `.' operator. */
-
-static tree
-make_qualified_primary (primary, right, location)
- tree primary, right;
- int location;
-{
- tree wfl;
-
- if (TREE_CODE (primary) != EXPR_WITH_FILE_LOCATION)
- wfl = build_wfl_wrap (primary, location);
- else
- {
- wfl = primary;
- /* If wfl wasn't qualified, we build a first anchor */
- if (!EXPR_WFL_QUALIFICATION (wfl))
- EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (wfl, NULL_TREE);
- }
-
- /* And chain them */
- EXPR_WFL_LINECOL (right) = location;
- chainon (EXPR_WFL_QUALIFICATION (wfl), build_tree_list (right, NULL_TREE));
- PRIMARY_P (wfl) = 1;
- return wfl;
-}
-
-/* Simple merge of two name separated by a `.' */
-
-static tree
-merge_qualified_name (left, right)
- tree left, right;
-{
- tree node;
- if (!left && !right)
- return NULL_TREE;
-
- if (!left)
- return right;
-
- if (!right)
- return left;
-
- obstack_grow (&temporary_obstack, IDENTIFIER_POINTER (left),
- IDENTIFIER_LENGTH (left));
- obstack_1grow (&temporary_obstack, '.');
- obstack_grow0 (&temporary_obstack, IDENTIFIER_POINTER (right),
- IDENTIFIER_LENGTH (right));
- node = get_identifier (obstack_base (&temporary_obstack));
- obstack_free (&temporary_obstack, obstack_base (&temporary_obstack));
- QUALIFIED_P (node) = 1;
- return node;
-}
-
-/* Merge the two parts of a qualified name into LEFT. Set the
- location information of the resulting node to LOCATION, usually
- inherited from the location information of the `.' operator. */
-
-static tree
-make_qualified_name (left, right, location)
- tree left, right;
- int location;
-{
-#ifdef USE_COMPONENT_REF
- tree node = build (COMPONENT_REF, NULL_TREE, left, right);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-#else
- tree left_id = EXPR_WFL_NODE (left);
- tree right_id = EXPR_WFL_NODE (right);
- tree wfl, merge;
-
- merge = merge_qualified_name (left_id, right_id);
-
- /* Left wasn't qualified and is now qualified */
- if (!QUALIFIED_P (left_id))
- {
- tree wfl = build_expr_wfl (left_id, ctxp->filename, 0, 0);
- EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (left);
- EXPR_WFL_QUALIFICATION (left) = build_tree_list (wfl, NULL_TREE);
- }
-
- wfl = build_expr_wfl (right_id, ctxp->filename, 0, 0);
- EXPR_WFL_LINECOL (wfl) = location;
- chainon (EXPR_WFL_QUALIFICATION (left), build_tree_list (wfl, NULL_TREE));
-
- EXPR_WFL_NODE (left) = merge;
- return left;
-#endif
-}
-
-/* Extract the last identifier component of the qualified in WFL. The
- last identifier is removed from the linked list */
-
-static tree
-cut_identifier_in_qualified (wfl)
- tree wfl;
-{
- tree q;
- tree previous = NULL_TREE;
- for (q = EXPR_WFL_QUALIFICATION (wfl); ; previous = q, q = TREE_CHAIN (q))
- if (!TREE_CHAIN (q))
- {
- if (!previous)
- /* Operating on a non qualified qualified WFL. */
- abort ();
-
- TREE_CHAIN (previous) = NULL_TREE;
- return TREE_PURPOSE (q);
- }
-}
-
-/* Resolve the expression name NAME. Return its decl. */
-
-static tree
-resolve_expression_name (id, orig)
- tree id;
- tree *orig;
-{
- tree name = EXPR_WFL_NODE (id);
- tree decl;
-
- /* 6.5.5.1: Simple expression names */
- if (!PRIMARY_P (id) && !QUALIFIED_P (name))
- {
- /* 15.13.1: NAME can appear within the scope of a local variable
- declaration */
- if ((decl = IDENTIFIER_LOCAL_VALUE (name)))
- return decl;
-
- /* 15.13.1: NAME can appear within a class declaration */
- else
- {
- decl = lookup_field_wrapper (current_class, name);
- if (decl)
- {
- tree access = NULL_TREE;
- int fs = FIELD_STATIC (decl);
-
- /* If we're accessing an outer scope local alias, make
- sure we change the name of the field we're going to
- build access to. */
- if (FIELD_LOCAL_ALIAS_USED (decl))
- name = DECL_NAME (decl);
-
- /* Instance variable (8.3.1.1) can't appear within
- static method, static initializer or initializer for
- a static variable. */
- if (!fs && METHOD_STATIC (current_function_decl))
- {
- static_ref_err (id, name, current_class);
- return error_mark_node;
- }
- /* Instance variables can't appear as an argument of
- an explicit constructor invocation */
- if (!fs && ctxp->explicit_constructor_p
- && !enclosing_context_p (DECL_CONTEXT (decl), current_class))
- {
- parse_error_context
- (id, "Can't reference `%s' before the superclass constructor has been called", IDENTIFIER_POINTER (name));
- return error_mark_node;
- }
-
- /* If we're processing an inner class and we're trying
- to access a field belonging to an outer class, build
- the access to the field */
- if (!fs && outer_field_access_p (current_class, decl))
- {
- if (CLASS_STATIC (TYPE_NAME (current_class)))
- {
- static_ref_err (id, DECL_NAME (decl), current_class);
- return error_mark_node;
- }
- access = build_outer_field_access (id, decl);
- if (orig)
- *orig = access;
- return access;
- }
-
- /* Otherwise build what it takes to access the field */
- access = build_field_ref ((fs ? NULL_TREE : current_this),
- DECL_CONTEXT (decl), name);
- if (fs)
- access = maybe_build_class_init_for_field (decl, access);
- /* We may be asked to save the real field access node */
- if (orig)
- *orig = access;
- /* And we return what we got */
- return access;
- }
- /* Fall down to error report on undefined variable */
- }
- }
- /* 6.5.5.2 Qualified Expression Names */
- else
- {
- if (orig)
- *orig = NULL_TREE;
- qualify_ambiguous_name (id);
- /* 15.10.1 Field Access Using a Primary and/or Expression Name */
- /* 15.10.2: Accessing Superclass Members using super */
- return resolve_field_access (id, orig, NULL);
- }
-
- /* We've got an error here */
- if (INNER_CLASS_TYPE_P (current_class))
- parse_error_context (id,
- "Local variable `%s' can't be accessed from within the inner class `%s' unless it is declared final",
- IDENTIFIER_POINTER (name),
- IDENTIFIER_POINTER (DECL_NAME
- (TYPE_NAME (current_class))));
- else
- parse_error_context (id, "Undefined variable `%s'",
- IDENTIFIER_POINTER (name));
-
- return error_mark_node;
-}
-
-static void
-static_ref_err (wfl, field_id, class_type)
- tree wfl, field_id, class_type;
-{
- parse_error_context
- (wfl,
- "Can't make a static reference to nonstatic variable `%s' in class `%s'",
- IDENTIFIER_POINTER (field_id),
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (class_type))));
-}
-
-/* 15.10.1 Field Access Using a Primary and/or Expression Name.
- We return something suitable to generate the field access. We also
- return the field decl in FIELD_DECL and its type in FIELD_TYPE. If
- recipient's address can be null. */
-
-static tree
-resolve_field_access (qual_wfl, field_decl, field_type)
- tree qual_wfl;
- tree *field_decl, *field_type;
-{
- int is_static = 0;
- tree field_ref;
- tree decl, where_found, type_found;
-
- if (resolve_qualified_expression_name (qual_wfl, &decl,
- &where_found, &type_found))
- return error_mark_node;
-
- /* Resolve the LENGTH field of an array here */
- if (DECL_P (decl) && DECL_NAME (decl) == length_identifier_node
- && type_found && TYPE_ARRAY_P (type_found)
- && ! flag_emit_class_files && ! flag_emit_xref)
- {
- tree length = build_java_array_length_access (where_found);
- field_ref = length;
-
- /* In case we're dealing with a static array, we need to
- initialize its class before the array length can be fetched.
- It's also a good time to create a DECL_RTL for the field if
- none already exists, otherwise if the field was declared in a
- class found in an external file and hasn't been (and won't
- be) accessed for its value, none will be created. */
- if (TREE_CODE (where_found) == VAR_DECL && FIELD_STATIC (where_found))
- {
- build_static_field_ref (where_found);
- field_ref = build_class_init (DECL_CONTEXT (where_found), field_ref);
- }
- }
- /* We might have been trying to resolve field.method(). In which
- case, the resolution is over and decl is the answer */
- else if (JDECL_P (decl) && IDENTIFIER_LOCAL_VALUE (DECL_NAME (decl)) == decl)
- field_ref = decl;
- else if (JDECL_P (decl))
- {
- if (!type_found)
- type_found = DECL_CONTEXT (decl);
- is_static = FIELD_STATIC (decl);
- field_ref = build_field_ref ((is_static && !flag_emit_xref?
- NULL_TREE : where_found),
- type_found, DECL_NAME (decl));
- if (field_ref == error_mark_node)
- return error_mark_node;
- if (is_static)
- field_ref = maybe_build_class_init_for_field (decl, field_ref);
- }
- else
- field_ref = decl;
-
- if (field_decl)
- *field_decl = decl;
- if (field_type)
- *field_type = (QUAL_DECL_TYPE (decl) ?
- QUAL_DECL_TYPE (decl) : TREE_TYPE (decl));
- return field_ref;
-}
-
-/* If NODE is an access to f static field, strip out the class
- initialization part and return the field decl, otherwise, return
- NODE. */
-
-static tree
-strip_out_static_field_access_decl (node)
- tree node;
-{
- if (TREE_CODE (node) == COMPOUND_EXPR)
- {
- tree op1 = TREE_OPERAND (node, 1);
- if (TREE_CODE (op1) == COMPOUND_EXPR)
- {
- tree call = TREE_OPERAND (op1, 0);
- if (TREE_CODE (call) == CALL_EXPR
- && TREE_CODE (TREE_OPERAND (call, 0)) == ADDR_EXPR
- && TREE_OPERAND (TREE_OPERAND (call, 0), 0)
- == soft_initclass_node)
- return TREE_OPERAND (op1, 1);
- }
- else if (JDECL_P (op1))
- return op1;
- }
- return node;
-}
-
-/* 6.5.5.2: Qualified Expression Names */
-
-static int
-resolve_qualified_expression_name (wfl, found_decl, where_found, type_found)
- tree wfl;
- tree *found_decl, *type_found, *where_found;
-{
- int from_type = 0; /* Field search initiated from a type */
- int from_super = 0, from_cast = 0, from_qualified_this = 0;
- int previous_call_static = 0;
- int is_static;
- tree decl = NULL_TREE, type = NULL_TREE, q;
- /* For certain for of inner class instantiation */
- tree saved_current, saved_this;
-#define RESTORE_THIS_AND_CURRENT_CLASS \
- { current_class = saved_current; current_this = saved_this;}
-
- *type_found = *where_found = NULL_TREE;
-
- for (q = EXPR_WFL_QUALIFICATION (wfl); q; q = TREE_CHAIN (q))
- {
- tree qual_wfl = QUAL_WFL (q);
- tree ret_decl; /* for EH checking */
- int location; /* for EH checking */
-
- /* 15.10.1 Field Access Using a Primary */
- switch (TREE_CODE (qual_wfl))
- {
- case CALL_EXPR:
- case NEW_CLASS_EXPR:
- /* If the access to the function call is a non static field,
- build the code to access it. */
- if (JDECL_P (decl) && !FIELD_STATIC (decl))
- {
- decl = maybe_access_field (decl, *where_found,
- DECL_CONTEXT (decl));
- if (decl == error_mark_node)
- return 1;
- }
-
- /* And code for the function call */
- if (complete_function_arguments (qual_wfl))
- return 1;
-
- /* We might have to setup a new current class and a new this
- for the search of an inner class, relative to the type of
- a expression resolved as `decl'. The current values are
- saved and restored shortly after */
- saved_current = current_class;
- saved_this = current_this;
- if (decl
- && (TREE_CODE (qual_wfl) == NEW_CLASS_EXPR
- || from_qualified_this))
- {
- /* If we still have `from_qualified_this', we have the form
- <T>.this.f() and we need to build <T>.this */
- if (from_qualified_this)
- {
- decl = build_access_to_thisn (current_class, type, 0);
- decl = java_complete_tree (decl);
- type = TREE_TYPE (TREE_TYPE (decl));
- }
- current_class = type;
- current_this = decl;
- from_qualified_this = 0;
- }
-
- if (from_super && TREE_CODE (qual_wfl) == CALL_EXPR)
- CALL_USING_SUPER (qual_wfl) = 1;
- location = (TREE_CODE (qual_wfl) == CALL_EXPR ?
- EXPR_WFL_LINECOL (TREE_OPERAND (qual_wfl, 0)) : 0);
- *where_found = patch_method_invocation (qual_wfl, decl, type,
- from_super,
- &is_static, &ret_decl);
- from_super = 0;
- if (*where_found == error_mark_node)
- {
- RESTORE_THIS_AND_CURRENT_CLASS;
- return 1;
- }
- *type_found = type = QUAL_DECL_TYPE (*where_found);
-
- /* If we're creating an inner class instance, check for that
- an enclosing instance is in scope */
- if (TREE_CODE (qual_wfl) == NEW_CLASS_EXPR
- && INNER_ENCLOSING_SCOPE_CHECK (type))
- {
- parse_error_context
- (qual_wfl, "No enclosing instance for inner class `%s' is in scope%s",
- lang_printable_name (type, 0),
- (!current_this ? "" :
- "; an explicit one must be provided when creating this inner class"));
- RESTORE_THIS_AND_CURRENT_CLASS;
- return 1;
- }
-
- /* In case we had to change then to resolve a inner class
- instantiation using a primary qualified by a `new' */
- RESTORE_THIS_AND_CURRENT_CLASS;
-
- /* EH check. No check on access$<n> functions */
- if (location
- && !OUTER_FIELD_ACCESS_IDENTIFIER_P
- (DECL_NAME (current_function_decl)))
- check_thrown_exceptions (location, ret_decl);
-
- /* If the previous call was static and this one is too,
- build a compound expression to hold the two (because in
- that case, previous function calls aren't transported as
- forcoming function's argument. */
- if (previous_call_static && is_static)
- {
- decl = build (COMPOUND_EXPR, TREE_TYPE (*where_found),
- decl, *where_found);
- TREE_SIDE_EFFECTS (decl) = 1;
- }
- else
- {
- previous_call_static = is_static;
- decl = *where_found;
- }
- from_type = 0;
- continue;
-
- case NEW_ARRAY_EXPR:
- case NEW_ANONYMOUS_ARRAY_EXPR:
- *where_found = decl = java_complete_tree (qual_wfl);
- if (decl == error_mark_node)
- return 1;
- *type_found = type = QUAL_DECL_TYPE (decl);
- continue;
-
- case CONVERT_EXPR:
- *where_found = decl = java_complete_tree (qual_wfl);
- if (decl == error_mark_node)
- return 1;
- *type_found = type = QUAL_DECL_TYPE (decl);
- from_cast = 1;
- continue;
-
- case CONDITIONAL_EXPR:
- case STRING_CST:
- case MODIFY_EXPR:
- *where_found = decl = java_complete_tree (qual_wfl);
- if (decl == error_mark_node)
- return 1;
- *type_found = type = QUAL_DECL_TYPE (decl);
- continue;
-
- case ARRAY_REF:
- /* If the access to the function call is a non static field,
- build the code to access it. */
- if (JDECL_P (decl) && !FIELD_STATIC (decl))
- {
- decl = maybe_access_field (decl, *where_found, type);
- if (decl == error_mark_node)
- return 1;
- }
- /* And code for the array reference expression */
- decl = java_complete_tree (qual_wfl);
- if (decl == error_mark_node)
- return 1;
- type = QUAL_DECL_TYPE (decl);
- continue;
-
- case PLUS_EXPR:
- if ((decl = java_complete_tree (qual_wfl)) == error_mark_node)
- return 1;
- if ((type = patch_string (decl)))
- decl = type;
- *where_found = QUAL_RESOLUTION (q) = decl;
- *type_found = type = TREE_TYPE (decl);
- break;
-
- case CLASS_LITERAL:
- if ((decl = java_complete_tree (qual_wfl)) == error_mark_node)
- return 1;
- *where_found = QUAL_RESOLUTION (q) = decl;
- *type_found = type = TREE_TYPE (decl);
- break;
-
- default:
- /* Fix for -Wall Just go to the next statement. Don't
- continue */
- break;
- }
-
- /* If we fall here, we weren't processing a (static) function call. */
- previous_call_static = 0;
-
- /* It can be the keyword THIS */
- if (TREE_CODE (qual_wfl) == EXPR_WITH_FILE_LOCATION
- && EXPR_WFL_NODE (qual_wfl) == this_identifier_node)
- {
- if (!current_this)
- {
- parse_error_context
- (wfl, "Keyword `this' used outside allowed context");
- return 1;
- }
- if (ctxp->explicit_constructor_p
- && type == current_class)
- {
- parse_error_context (wfl, "Can't reference `this' before the superclass constructor has been called");
- return 1;
- }
- /* We have to generate code for intermediate access */
- if (!from_type || TREE_TYPE (TREE_TYPE (current_this)) == type)
- {
- *where_found = decl = current_this;
- *type_found = type = QUAL_DECL_TYPE (decl);
- }
- /* We're trying to access the this from somewhere else. Make sure
- it's allowed before doing so. */
- else
- {
- if (!enclosing_context_p (type, current_class))
- {
- char *p = xstrdup (lang_printable_name (type, 0));
- parse_error_context (qual_wfl, "Can't use variable `%s.this': type `%s' isn't an outer type of type `%s'",
- p, p,
- lang_printable_name (current_class, 0));
- free (p);
- return 1;
- }
- from_qualified_this = 1;
- /* If there's nothing else after that, we need to
- produce something now, otherwise, the section of the
- code that needs to produce <T>.this will generate
- what is necessary. */
- if (!TREE_CHAIN (q))
- {
- decl = build_access_to_thisn (current_class, type, 0);
- *where_found = decl = java_complete_tree (decl);
- *type_found = type = TREE_TYPE (decl);
- }
- }
-
- from_type = 0;
- continue;
- }
-
- /* 15.10.2 Accessing Superclass Members using SUPER */
- if (TREE_CODE (qual_wfl) == EXPR_WITH_FILE_LOCATION
- && EXPR_WFL_NODE (qual_wfl) == super_identifier_node)
- {
- tree node;
- /* Check on the restricted use of SUPER */
- if (METHOD_STATIC (current_function_decl)
- || current_class == object_type_node)
- {
- parse_error_context
- (wfl, "Keyword `super' used outside allowed context");
- return 1;
- }
- /* Otherwise, treat SUPER as (SUPER_CLASS)THIS */
- node = build_cast (EXPR_WFL_LINECOL (qual_wfl),
- CLASSTYPE_SUPER (current_class),
- build_this (EXPR_WFL_LINECOL (qual_wfl)));
- *where_found = decl = java_complete_tree (node);
- if (decl == error_mark_node)
- return 1;
- *type_found = type = QUAL_DECL_TYPE (decl);
- from_super = from_type = 1;
- continue;
- }
-
- /* 15.13.1: Can't search for field name in packages, so we
- assume a variable/class name was meant. */
- if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
- {
- tree name;
- if ((decl = resolve_package (wfl, &q, &name)))
- {
- tree list;
- *where_found = decl;
-
- /* We want to be absolutely sure that the class is laid
- out. We're going to search something inside it. */
- *type_found = type = TREE_TYPE (decl);
- layout_class (type);
- from_type = 1;
-
- /* Fix them all the way down, if any are left. */
- if (q)
- {
- list = TREE_CHAIN (q);
- while (list)
- {
- RESOLVE_EXPRESSION_NAME_P (QUAL_WFL (list)) = 1;
- RESOLVE_PACKAGE_NAME_P (QUAL_WFL (list)) = 0;
- list = TREE_CHAIN (list);
- }
- }
- }
- else
- {
- if (from_super || from_cast)
- parse_error_context
- ((from_cast ? qual_wfl : wfl),
- "No variable `%s' defined in class `%s'",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
- lang_printable_name (type, 0));
- else
- parse_error_context
- (qual_wfl, "Undefined variable or class name: `%s'",
- IDENTIFIER_POINTER (name));
- return 1;
- }
- }
-
- /* We have a type name. It's been already resolved when the
- expression was qualified. */
- else if (RESOLVE_TYPE_NAME_P (qual_wfl) && QUAL_RESOLUTION (q))
- {
- decl = QUAL_RESOLUTION (q);
-
- /* Sneak preview. If next we see a `new', we're facing a
- qualification with resulted in a type being selected
- instead of a field. Report the error */
- if(TREE_CHAIN (q)
- && TREE_CODE (TREE_PURPOSE (TREE_CHAIN (q))) == NEW_CLASS_EXPR)
- {
- parse_error_context (qual_wfl, "Undefined variable `%s'",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
- return 1;
- }
-
- if (not_accessible_p (TREE_TYPE (decl), decl, type, 0))
- {
- parse_error_context
- (qual_wfl, "Can't access %s field `%s.%s' from `%s'",
- java_accstring_lookup (get_access_flags_from_decl (decl)),
- GET_TYPE_NAME (type),
- IDENTIFIER_POINTER (DECL_NAME (decl)),
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
- return 1;
- }
- check_deprecation (qual_wfl, decl);
-
- type = TREE_TYPE (decl);
- from_type = 1;
- }
- /* We resolve an expression name */
- else
- {
- tree field_decl = NULL_TREE;
-
- /* If there exists an early resolution, use it. That occurs
- only once and we know that there are more things to
- come. Don't do that when processing something after SUPER
- (we need more thing to be put in place below */
- if (!from_super && QUAL_RESOLUTION (q))
- {
- decl = QUAL_RESOLUTION (q);
- if (!type)
- {
- if (TREE_CODE (decl) == FIELD_DECL && !FIELD_STATIC (decl))
- {
- if (current_this)
- *where_found = current_this;
- else
- {
- static_ref_err (qual_wfl, DECL_NAME (decl),
- current_class);
- return 1;
- }
- if (outer_field_access_p (current_class, decl))
- decl = build_outer_field_access (qual_wfl, decl);
- }
- else
- {
- *where_found = TREE_TYPE (decl);
- if (TREE_CODE (*where_found) == POINTER_TYPE)
- *where_found = TREE_TYPE (*where_found);
- }
- }
- }
-
- /* Report and error if we're using a numerical litteral as a
- qualifier. It can only be an INTEGER_CST. */
- else if (TREE_CODE (qual_wfl) == INTEGER_CST)
- {
- parse_error_context
- (wfl, "Can't use type `%s' as a qualifier",
- lang_printable_name (TREE_TYPE (qual_wfl), 0));
- return 1;
- }
-
- /* We have to search for a field, knowing the type of its
- container. The flag FROM_TYPE indicates that we resolved
- the last member of the expression as a type name, which
- means that for the resolution of this field, we'll look
- for other errors than if it was resolved as a member of
- an other field. */
- else
- {
- int is_static;
- tree field_decl_type; /* For layout */
-
- if (!from_type && !JREFERENCE_TYPE_P (type))
- {
- parse_error_context
- (qual_wfl, "Attempt to reference field `%s' in `%s %s'",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
- lang_printable_name (type, 0),
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- return 1;
- }
-
- field_decl = lookup_field_wrapper (type,
- EXPR_WFL_NODE (qual_wfl));
-
- /* Maybe what we're trying to access to is an inner
- class, only if decl is a TYPE_DECL. */
- if (!field_decl && TREE_CODE (decl) == TYPE_DECL)
- {
- tree ptr, inner_decl;
-
- BUILD_PTR_FROM_NAME (ptr, EXPR_WFL_NODE (qual_wfl));
- inner_decl = resolve_class (decl, ptr, NULL_TREE, qual_wfl);
- if (inner_decl)
- {
- check_inner_class_access (inner_decl, decl, qual_wfl);
- type = TREE_TYPE (inner_decl);
- decl = inner_decl;
- from_type = 1;
- continue;
- }
- }
-
- if (field_decl == NULL_TREE)
- {
- parse_error_context
- (qual_wfl, "No variable `%s' defined in type `%s'",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
- GET_TYPE_NAME (type));
- return 1;
- }
- if (field_decl == error_mark_node)
- return 1;
-
- /* Layout the type of field_decl, since we may need
- it. Don't do primitive types or loaded classes. The
- situation of non primitive arrays may not handled
- properly here. FIXME */
- if (TREE_CODE (TREE_TYPE (field_decl)) == POINTER_TYPE)
- field_decl_type = TREE_TYPE (TREE_TYPE (field_decl));
- else
- field_decl_type = TREE_TYPE (field_decl);
- if (!JPRIMITIVE_TYPE_P (field_decl_type)
- && !CLASS_LOADED_P (field_decl_type)
- && !TYPE_ARRAY_P (field_decl_type))
- resolve_and_layout (field_decl_type, NULL_TREE);
-
- /* Check on accessibility here */
- if (not_accessible_p (current_class, field_decl,
- DECL_CONTEXT (field_decl), from_super))
- {
- parse_error_context
- (qual_wfl,
- "Can't access %s field `%s.%s' from `%s'",
- java_accstring_lookup
- (get_access_flags_from_decl (field_decl)),
- GET_TYPE_NAME (type),
- IDENTIFIER_POINTER (DECL_NAME (field_decl)),
- IDENTIFIER_POINTER
- (DECL_NAME (TYPE_NAME (current_class))));
- return 1;
- }
- check_deprecation (qual_wfl, field_decl);
-
- /* There are things to check when fields are accessed
- from type. There are no restrictions on a static
- declaration of the field when it is accessed from an
- interface */
- is_static = FIELD_STATIC (field_decl);
- if (!from_super && from_type
- && !TYPE_INTERFACE_P (type)
- && !is_static
- && (current_function_decl
- && METHOD_STATIC (current_function_decl)))
- {
- static_ref_err (qual_wfl, EXPR_WFL_NODE (qual_wfl), type);
- return 1;
- }
- from_cast = from_super = 0;
-
- /* It's an access from a type but it isn't static, we
- make it relative to `this'. */
- if (!is_static && from_type)
- decl = current_this;
-
- /* If we need to generate something to get a proper
- handle on what this field is accessed from, do it
- now. */
- if (!is_static)
- {
- decl = maybe_access_field (decl, *where_found, *type_found);
- if (decl == error_mark_node)
- return 1;
- }
-
- /* We want to keep the location were found it, and the type
- we found. */
- *where_found = decl;
- *type_found = type;
-
- /* Generate the correct expression for field access from
- qualified this */
- if (from_qualified_this)
- {
- field_decl = build_outer_field_access (qual_wfl, field_decl);
- from_qualified_this = 0;
- }
-
- /* This is the decl found and eventually the next one to
- search from */
- decl = field_decl;
- }
- from_type = 0;
- type = QUAL_DECL_TYPE (decl);
-
- /* Sneak preview. If decl is qualified by a `new', report
- the error here to be accurate on the peculiar construct */
- if (TREE_CHAIN (q)
- && TREE_CODE (TREE_PURPOSE (TREE_CHAIN (q))) == NEW_CLASS_EXPR
- && !JREFERENCE_TYPE_P (type))
- {
- parse_error_context (qual_wfl, "Attempt to reference field `new' in a `%s'",
- lang_printable_name (type, 0));
- return 1;
- }
- }
- /* `q' might have changed due to a after package resolution
- re-qualification */
- if (!q)
- break;
- }
- *found_decl = decl;
- return 0;
-}
-
-/* 6.6 Qualified name and access control. Returns 1 if MEMBER (a decl)
- can't be accessed from REFERENCE (a record type). If MEMBER
- features a protected access, we then use WHERE which, if non null,
- holds the type of MEMBER's access that is checked against
- 6.6.2.1. This function should be used when decl is a field or a
- method. */
-
-static int
-not_accessible_p (reference, member, where, from_super)
- tree reference, member;
- tree where;
- int from_super;
-{
- int access_flag = get_access_flags_from_decl (member);
-
- /* Inner classes are processed by check_inner_class_access */
- if (INNER_CLASS_TYPE_P (reference))
- return 0;
-
- /* Access always granted for members declared public */
- if (access_flag & ACC_PUBLIC)
- return 0;
-
- /* Check access on protected members */
- if (access_flag & ACC_PROTECTED)
- {
- /* Access granted if it occurs from within the package
- containing the class in which the protected member is
- declared */
- if (class_in_current_package (DECL_CONTEXT (member)))
- return 0;
-
- /* If accessed with the form `super.member', then access is granted */
- if (from_super)
- return 0;
-
- /* If where is active, access was made through a
- qualifier. Access is granted if the type of the qualifier is
- or is a sublass of the type the access made from (6.6.2.1.) */
- if (where && !inherits_from_p (reference, where))
- return 1;
-
- /* Otherwise, access is granted if occurring from the class where
- member is declared or a subclass of it. Find the right
- context to perform the check */
- if (PURE_INNER_CLASS_TYPE_P (reference))
- {
- while (INNER_CLASS_TYPE_P (reference))
- {
- if (inherits_from_p (reference, DECL_CONTEXT (member)))
- return 0;
- reference = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (reference)));
- }
- }
- if (inherits_from_p (reference, DECL_CONTEXT (member)))
- return 0;
- return 1;
- }
-
- /* Check access on private members. Access is granted only if it
- occurs from within the class in which it is declared -- that does
- it for innerclasses too. */
- if (access_flag & ACC_PRIVATE)
- {
- if (reference == DECL_CONTEXT (member))
- return 0;
- if (enclosing_context_p (reference, DECL_CONTEXT (member)))
- return 0;
- return 1;
- }
-
- /* Default access are permitted only when occurring within the
- package in which the type (REFERENCE) is declared. In other words,
- REFERENCE is defined in the current package */
- if (ctxp->package)
- return !class_in_current_package (reference);
-
- /* Otherwise, access is granted */
- return 0;
-}
-
-/* Test deprecated decl access. */
-static void
-check_deprecation (wfl, decl)
- tree wfl, decl;
-{
- const char *file = DECL_SOURCE_FILE (decl);
- /* Complain if the field is deprecated and the file it was defined
- in isn't compiled at the same time the file which contains its
- use is */
- if (DECL_DEPRECATED (decl)
- && !IS_A_COMMAND_LINE_FILENAME_P (get_identifier (file)))
- {
- char the [20];
- switch (TREE_CODE (decl))
- {
- case FUNCTION_DECL:
- strcpy (the, "method");
- break;
- case FIELD_DECL:
- case VAR_DECL:
- strcpy (the, "field");
- break;
- case TYPE_DECL:
- parse_warning_context (wfl, "The class `%s' has been deprecated",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- return;
- default:
- abort ();
- }
- /* Don't issue a message if the context as been deprecated as a
- whole. */
- if (! CLASS_DEPRECATED (TYPE_NAME (DECL_CONTEXT (decl))))
- parse_warning_context
- (wfl, "The %s `%s' in class `%s' has been deprecated",
- the, lang_printable_name (decl, 0),
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))));
- }
-}
-
-/* Returns 1 if class was declared in the current package, 0 otherwise */
-
-static int
-class_in_current_package (class)
- tree class;
-{
- static tree cache = NULL_TREE;
- int qualified_flag;
- tree left;
-
- if (cache == class)
- return 1;
-
- qualified_flag = QUALIFIED_P (DECL_NAME (TYPE_NAME (class)));
-
- /* If the current package is empty and the name of CLASS is
- qualified, class isn't in the current package. If there is a
- current package and the name of the CLASS is not qualified, class
- isn't in the current package */
- if ((!ctxp->package && qualified_flag) || (ctxp->package && !qualified_flag))
- return 0;
-
- /* If there is not package and the name of CLASS isn't qualified,
- they belong to the same unnamed package */
- if (!ctxp->package && !qualified_flag)
- return 1;
-
- /* Compare the left part of the name of CLASS with the package name */
- breakdown_qualified (&left, NULL, DECL_NAME (TYPE_NAME (class)));
- if (ctxp->package == left)
- {
- static int initialized_p;
- /* Register CACHE with the garbage collector. */
- if (!initialized_p)
- {
- ggc_add_tree_root (&cache, 1);
- initialized_p = 1;
- }
-
- cache = class;
- return 1;
- }
- return 0;
-}
-
-/* This function may generate code to access DECL from WHERE. This is
- done only if certain conditions meet. */
-
-static tree
-maybe_access_field (decl, where, type)
- tree decl, where, type;
-{
- if (TREE_CODE (decl) == FIELD_DECL && decl != current_this
- && !FIELD_STATIC (decl))
- decl = build_field_ref (where ? where : current_this,
- (type ? type : DECL_CONTEXT (decl)),
- DECL_NAME (decl));
- return decl;
-}
-
-/* Build a method invocation, by patching PATCH. If non NULL
- and according to the situation, PRIMARY and WHERE may be
- used. IS_STATIC is set to 1 if the invoked function is static. */
-
-static tree
-patch_method_invocation (patch, primary, where, from_super,
- is_static, ret_decl)
- tree patch, primary, where;
- int from_super;
- int *is_static;
- tree *ret_decl;
-{
- tree wfl = TREE_OPERAND (patch, 0);
- tree args = TREE_OPERAND (patch, 1);
- tree name = EXPR_WFL_NODE (wfl);
- tree list;
- int is_static_flag = 0;
- int is_super_init = 0;
- tree this_arg = NULL_TREE;
- int is_array_clone_call = 0;
-
- /* Should be overriden if everything goes well. Otherwise, if
- something fails, it should keep this value. It stop the
- evaluation of a bogus assignment. See java_complete_tree,
- MODIFY_EXPR: for the reasons why we sometimes want to keep on
- evaluating an assignment */
- TREE_TYPE (patch) = error_mark_node;
-
- /* Since lookup functions are messing with line numbers, save the
- context now. */
- java_parser_context_save_global ();
-
- /* 15.11.1: Compile-Time Step 1: Determine Class or Interface to Search */
-
- /* Resolution of qualified name, excluding constructors */
- if (QUALIFIED_P (name) && !CALL_CONSTRUCTOR_P (patch))
- {
- tree identifier, identifier_wfl, type, resolved;
- /* Extract the last IDENTIFIER of the qualified
- expression. This is a wfl and we will use it's location
- data during error report. */
- identifier_wfl = cut_identifier_in_qualified (wfl);
- identifier = EXPR_WFL_NODE (identifier_wfl);
-
- /* Given the context, IDENTIFIER is syntactically qualified
- as a MethodName. We need to qualify what's before */
- qualify_ambiguous_name (wfl);
- resolved = resolve_field_access (wfl, NULL, NULL);
-
- if (TREE_CODE (resolved) == VAR_DECL && FIELD_STATIC (resolved)
- && FIELD_FINAL (resolved)
- && !inherits_from_p (DECL_CONTEXT (resolved), current_class)
- && !flag_emit_class_files && !flag_emit_xref)
- resolved = build_class_init (DECL_CONTEXT (resolved), resolved);
-
- if (resolved == error_mark_node)
- PATCH_METHOD_RETURN_ERROR ();
-
- type = GET_SKIP_TYPE (resolved);
- resolve_and_layout (type, NULL_TREE);
-
- if (JPRIMITIVE_TYPE_P (type))
- {
- parse_error_context
- (identifier_wfl,
- "Can't invoke a method on primitive type `%s'",
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
- PATCH_METHOD_RETURN_ERROR ();
- }
-
- list = lookup_method_invoke (0, identifier_wfl, type, identifier, args);
- args = nreverse (args);
-
- /* We're resolving a call from a type */
- if (TREE_CODE (resolved) == TYPE_DECL)
- {
- if (CLASS_INTERFACE (resolved))
- {
- parse_error_context
- (identifier_wfl,
- "Can't make static reference to method `%s' in interface `%s'",
- IDENTIFIER_POINTER (identifier),
- IDENTIFIER_POINTER (name));
- PATCH_METHOD_RETURN_ERROR ();
- }
- if (list && !METHOD_STATIC (list))
- {
- char *fct_name = xstrdup (lang_printable_name (list, 0));
- parse_error_context
- (identifier_wfl,
- "Can't make static reference to method `%s %s' in class `%s'",
- lang_printable_name (TREE_TYPE (TREE_TYPE (list)), 0),
- fct_name, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
- free (fct_name);
- PATCH_METHOD_RETURN_ERROR ();
- }
- }
- else
- this_arg = primary = resolved;
-
- if (TYPE_ARRAY_P (type) && identifier == get_identifier ("clone"))
- is_array_clone_call = 1;
-
- /* IDENTIFIER_WFL will be used to report any problem further */
- wfl = identifier_wfl;
- }
- /* Resolution of simple names, names generated after a primary: or
- constructors */
- else
- {
- tree class_to_search = NULL_TREE;
- int lc; /* Looking for Constructor */
-
- /* We search constructor in their target class */
- if (CALL_CONSTRUCTOR_P (patch))
- {
- if (TREE_CODE (patch) == NEW_CLASS_EXPR)
- class_to_search = EXPR_WFL_NODE (wfl);
- else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) ==
- this_identifier_node)
- class_to_search = NULL_TREE;
- else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) ==
- super_identifier_node)
- {
- is_super_init = 1;
- if (CLASSTYPE_SUPER (current_class))
- class_to_search =
- DECL_NAME (TYPE_NAME (CLASSTYPE_SUPER (current_class)));
- else
- {
- parse_error_context (wfl, "Can't invoke super constructor on java.lang.Object");
- PATCH_METHOD_RETURN_ERROR ();
- }
- }
-
- /* Class to search is NULL if we're searching the current one */
- if (class_to_search)
- {
- class_to_search = resolve_and_layout (class_to_search, wfl);
-
- if (!class_to_search)
- {
- parse_error_context
- (wfl, "Class `%s' not found in type declaration",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
- PATCH_METHOD_RETURN_ERROR ();
- }
-
- /* Can't instantiate an abstract class, but we can
- invoke it's constructor. It's use within the `new'
- context is denied here. */
- if (CLASS_ABSTRACT (class_to_search)
- && TREE_CODE (patch) == NEW_CLASS_EXPR)
- {
- parse_error_context
- (wfl, "Class `%s' is an abstract class. It can't be instantiated",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
- PATCH_METHOD_RETURN_ERROR ();
- }
-
- class_to_search = TREE_TYPE (class_to_search);
- }
- else
- class_to_search = current_class;
- lc = 1;
- }
- /* This is a regular search in the local class, unless an
- alternate class is specified. */
- else
- {
- if (where != NULL_TREE)
- class_to_search = where;
- else if (QUALIFIED_P (name))
- class_to_search = current_class;
- else
- {
- class_to_search = current_class;
-
- for (;;)
- {
- if (has_method (class_to_search, name))
- break;
- if (! INNER_CLASS_TYPE_P (class_to_search))
- {
- parse_error_context (wfl,
- "No method named `%s' in scope",
- IDENTIFIER_POINTER (name));
- PATCH_METHOD_RETURN_ERROR ();
- }
- class_to_search
- = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class_to_search)));
- }
- }
- lc = 0;
- }
-
- /* NAME is a simple identifier or comes from a primary. Search
- in the class whose declaration contain the method being
- invoked. */
- resolve_and_layout (class_to_search, NULL_TREE);
-
- list = lookup_method_invoke (lc, wfl, class_to_search, name, args);
- /* Don't continue if no method were found, as the next statement
- can't be executed then. */
- if (!list)
- PATCH_METHOD_RETURN_ERROR ();
-
- if (TYPE_ARRAY_P (class_to_search)
- && DECL_NAME (list) == get_identifier ("clone"))
- is_array_clone_call = 1;
-
- /* Check for static reference if non static methods */
- if (check_for_static_method_reference (wfl, patch, list,
- class_to_search, primary))
- PATCH_METHOD_RETURN_ERROR ();
-
- /* Check for inner classes creation from illegal contexts */
- if (lc && (INNER_CLASS_TYPE_P (class_to_search)
- && !CLASS_STATIC (TYPE_NAME (class_to_search)))
- && INNER_ENCLOSING_SCOPE_CHECK (class_to_search)
- && !DECL_INIT_P (current_function_decl))
- {
- parse_error_context
- (wfl, "No enclosing instance for inner class `%s' is in scope%s",
- lang_printable_name (class_to_search, 0),
- (!current_this ? "" :
- "; an explicit one must be provided when creating this inner class"));
- PATCH_METHOD_RETURN_ERROR ();
- }
-
- /* Non static methods are called with the current object extra
- argument. If patch a `new TYPE()', the argument is the value
- returned by the object allocator. If method is resolved as a
- primary, use the primary otherwise use the current THIS. */
- args = nreverse (args);
- if (TREE_CODE (patch) != NEW_CLASS_EXPR)
- {
- this_arg = primary ? primary : current_this;
-
- /* If we're using an access method, things are different.
- There are two familly of cases:
-
- 1) We're not generating bytecodes:
-
- - LIST is non static. It's invocation is transformed from
- x(a1,...,an) into this$<n>.x(a1,....an).
- - LIST is static. It's invocation is transformed from
- x(a1,...,an) into TYPE_OF(this$<n>).x(a1,....an)
-
- 2) We're generating bytecodes:
-
- - LIST is non static. It's invocation is transformed from
- x(a1,....,an) into access$<n>(this$<n>,a1,...,an).
- - LIST is static. It's invocation is transformed from
- x(a1,....,an) into TYPE_OF(this$<n>).x(a1,....an).
-
- Of course, this$<n> can be abitrary complex, ranging from
- this$0 (the immediate outer context) to
- access$0(access$0(...(this$0))).
-
- maybe_use_access_method returns a non zero value if the
- this_arg has to be moved into the (then generated) stub
- argument list. In the meantime, the selected function
- might have be replaced by a generated stub. */
- if (!primary &&
- maybe_use_access_method (is_super_init, &list, &this_arg))
- {
- args = tree_cons (NULL_TREE, this_arg, args);
- this_arg = NULL_TREE; /* So it doesn't get chained twice */
- }
- }
- }
-
- /* Merge point of all resolution schemes. If we have nothing, this
- is an error, already signaled */
- if (!list)
- PATCH_METHOD_RETURN_ERROR ();
-
- /* Check accessibility, position the is_static flag, build and
- return the call */
- if (not_accessible_p (DECL_CONTEXT (current_function_decl), list,
- (primary ? TREE_TYPE (TREE_TYPE (primary)) :
- NULL_TREE), from_super)
- /* Calls to clone() on array types are permitted as a special-case. */
- && !is_array_clone_call)
- {
- const char *const fct_name = IDENTIFIER_POINTER (DECL_NAME (list));
- const char *const access =
- java_accstring_lookup (get_access_flags_from_decl (list));
- const char *const klass =
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (list))));
- const char *const refklass =
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class)));
- const char *const what = (DECL_CONSTRUCTOR_P (list)
- ? "constructor" : "method");
- /* FIXME: WFL yields the wrong message here but I don't know
- what else to use. */
- parse_error_context (wfl,
- "Can't access %s %s `%s.%s' from `%s'",
- access, what, klass, fct_name, refklass);
- PATCH_METHOD_RETURN_ERROR ();
- }
-
- /* Deprecation check: check whether the method being invoked or the
- instance-being-created's type are deprecated. */
- if (TREE_CODE (patch) == NEW_CLASS_EXPR)
- check_deprecation (wfl, TYPE_NAME (DECL_CONTEXT (list)));
- else
- check_deprecation (wfl, list);
-
- /* If invoking a innerclass constructor, there are hidden parameters
- to pass */
- if (TREE_CODE (patch) == NEW_CLASS_EXPR
- && PURE_INNER_CLASS_TYPE_P (DECL_CONTEXT (list)))
- {
- /* And make sure we add the accessed local variables to be saved
- in field aliases. */
- args = build_alias_initializer_parameter_list
- (AIPL_FUNCTION_CTOR_INVOCATION, DECL_CONTEXT (list), args, NULL);
-
- /* Secretly pass the current_this/primary as a second argument */
- if (primary || current_this)
- {
- tree extra_arg;
- tree this_type = (current_this ?
- TREE_TYPE (TREE_TYPE (current_this)) : NULL_TREE);
- /* Method's (list) enclosing context */
- tree mec = DECL_CONTEXT (TYPE_NAME (DECL_CONTEXT (list)));
- /* If we have a primary, use it. */
- if (primary)
- extra_arg = primary;
- /* The current `this' is an inner class but isn't a direct
- enclosing context for the inner class we're trying to
- create. Build an access to the proper enclosing context
- and use it. */
- else if (current_this && PURE_INNER_CLASS_TYPE_P (this_type)
- && this_type != TREE_TYPE (mec))
- {
-
- extra_arg = build_access_to_thisn (current_class,
- TREE_TYPE (mec), 0);
- extra_arg = java_complete_tree (extra_arg);
- }
- /* Otherwise, just use the current `this' as an enclosing
- context. */
- else
- extra_arg = current_this;
- args = tree_cons (NULL_TREE, extra_arg, args);
- }
- else
- args = tree_cons (NULL_TREE, integer_zero_node, args);
- }
-
- /* This handles the situation where a constructor invocation needs
- to have an enclosing context passed as a second parameter (the
- constructor is one of an inner class). */
- if ((is_super_init ||
- (TREE_CODE (patch) == CALL_EXPR && name == this_identifier_node))
- && PURE_INNER_CLASS_TYPE_P (DECL_CONTEXT (list)))
- {
- tree dest = TYPE_NAME (DECL_CONTEXT (list));
- tree extra_arg =
- build_access_to_thisn (current_class, DECL_CONTEXT (dest), 0);
- extra_arg = java_complete_tree (extra_arg);
- args = tree_cons (NULL_TREE, extra_arg, args);
- }
-
- is_static_flag = METHOD_STATIC (list);
- if (! is_static_flag && this_arg != NULL_TREE)
- args = tree_cons (NULL_TREE, this_arg, args);
-
- /* In the context of an explicit constructor invocation, we can't
- invoke any method relying on `this'. Exceptions are: we're
- invoking a static function, primary exists and is not the current
- this, we're creating a new object. */
- if (ctxp->explicit_constructor_p
- && !is_static_flag
- && (!primary || primary == current_this)
- && (TREE_CODE (patch) != NEW_CLASS_EXPR))
- {
- parse_error_context (wfl, "Can't reference `this' before the superclass constructor has been called");
- PATCH_METHOD_RETURN_ERROR ();
- }
- java_parser_context_restore_global ();
- if (is_static)
- *is_static = is_static_flag;
- /* Sometimes, we want the decl of the selected method. Such as for
- EH checking */
- if (ret_decl)
- *ret_decl = list;
- patch = patch_invoke (patch, list, args);
-
- /* Now is a good time to insert the call to finit$ */
- if (is_super_init && CLASS_HAS_FINIT_P (current_class))
- {
- tree finit_parms, finit_call;
-
- /* Prepare to pass hidden parameters to finit$, if any. */
- finit_parms = build_alias_initializer_parameter_list
- (AIPL_FUNCTION_FINIT_INVOCATION, current_class, NULL_TREE, NULL);
-
- finit_call =
- build_method_invocation (build_wfl_node (finit_identifier_node),
- finit_parms);
-
- /* Generate the code used to initialize fields declared with an
- initialization statement and build a compound statement along
- with the super constructor invocation. */
- CAN_COMPLETE_NORMALLY (patch) = 1;
- patch = build (COMPOUND_EXPR, void_type_node, patch,
- java_complete_tree (finit_call));
- }
- return patch;
-}
-
-/* Check that we're not trying to do a static reference to a method in
- non static method. Return 1 if it's the case, 0 otherwise. */
-
-static int
-check_for_static_method_reference (wfl, node, method, where, primary)
- tree wfl, node, method, where, primary;
-{
- if (METHOD_STATIC (current_function_decl)
- && !METHOD_STATIC (method) && !primary && !CALL_CONSTRUCTOR_P (node))
- {
- char *fct_name = xstrdup (lang_printable_name (method, 0));
- parse_error_context
- (wfl, "Can't make static reference to method `%s %s' in class `%s'",
- lang_printable_name (TREE_TYPE (TREE_TYPE (method)), 0), fct_name,
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (where))));
- free (fct_name);
- return 1;
- }
- return 0;
-}
-
-/* Fix the invocation of *MDECL if necessary in the case of a
- invocation from an inner class. *THIS_ARG might be modified
- appropriately and an alternative access to *MDECL might be
- returned. */
-
-static int
-maybe_use_access_method (is_super_init, mdecl, this_arg)
- int is_super_init;
- tree *mdecl, *this_arg;
-{
- tree ctx;
- tree md = *mdecl, ta = *this_arg;
- int to_return = 0;
- int non_static_context = !METHOD_STATIC (md);
-
- if (is_super_init
- || DECL_CONTEXT (md) == current_class
- || !PURE_INNER_CLASS_TYPE_P (current_class)
- || DECL_FINIT_P (md)
- || DECL_INSTINIT_P (md))
- return 0;
-
- /* If we're calling a method found in an enclosing class, generate
- what it takes to retrieve the right this. Don't do that if we're
- invoking a static method. Note that if MD's type is unrelated to
- CURRENT_CLASS, then the current this can be used. */
-
- if (non_static_context && DECL_CONTEXT (md) != object_type_node)
- {
- ctx = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current_class)));
- if (inherits_from_p (ctx, DECL_CONTEXT (md)))
- {
- ta = build_current_thisn (current_class);
- ta = build_wfl_node (ta);
- }
- else
- {
- tree type = ctx;
- while (type)
- {
- maybe_build_thisn_access_method (type);
- if (inherits_from_p (type, DECL_CONTEXT (md)))
- {
- ta = build_access_to_thisn (ctx, type, 0);
- break;
- }
- type = (DECL_CONTEXT (TYPE_NAME (type)) ?
- TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))) : NULL_TREE);
- }
- }
- ta = java_complete_tree (ta);
- }
-
- /* We might have to use an access method to get to MD. We can
- break the method access rule as far as we're not generating
- bytecode */
- if (METHOD_PRIVATE (md) && flag_emit_class_files)
- {
- md = build_outer_method_access_method (md);
- to_return = 1;
- }
-
- *mdecl = md;
- *this_arg = ta;
-
- /* Returnin a non zero value indicates we were doing a non static
- method invokation that is now a static invocation. It will have
- callee displace `this' to insert it in the regular argument
- list. */
- return (non_static_context && to_return);
-}
-
-/* Patch an invoke expression METHOD and ARGS, based on its invocation
- mode. */
-
-static tree
-patch_invoke (patch, method, args)
- tree patch, method, args;
-{
- tree dtable, func;
- tree original_call, t, ta;
- tree check = NULL_TREE;
-
- /* Last step for args: convert build-in types. If we're dealing with
- a new TYPE() type call, the first argument to the constructor
- isn't found in the incoming argument list, but delivered by
- `new' */
- t = TYPE_ARG_TYPES (TREE_TYPE (method));
- if (TREE_CODE (patch) == NEW_CLASS_EXPR)
- t = TREE_CHAIN (t);
- for (ta = args; t != end_params_node && ta;
- t = TREE_CHAIN (t), ta = TREE_CHAIN (ta))
- if (JPRIMITIVE_TYPE_P (TREE_TYPE (TREE_VALUE (ta))) &&
- TREE_TYPE (TREE_VALUE (ta)) != TREE_VALUE (t))
- TREE_VALUE (ta) = convert (TREE_VALUE (t), TREE_VALUE (ta));
-
- /* Resolve unresolved returned type isses */
- t = TREE_TYPE (TREE_TYPE (method));
- if (TREE_CODE (t) == POINTER_TYPE && !CLASS_LOADED_P (TREE_TYPE (t)))
- resolve_and_layout (TREE_TYPE (t), NULL);
-
- if (flag_emit_class_files || flag_emit_xref)
- func = method;
- else
- {
- switch (invocation_mode (method, CALL_USING_SUPER (patch)))
- {
- case INVOKE_VIRTUAL:
- dtable = invoke_build_dtable (0, args);
- func = build_invokevirtual (dtable, method);
- break;
-
- case INVOKE_NONVIRTUAL:
- /* If the object for the method call is null, we throw an
- exception. We don't do this if the object is the current
- method's `this'. In other cases we just rely on an
- optimization pass to eliminate redundant checks. */
- if (TREE_VALUE (args) != current_this)
- {
- /* We use a save_expr here to make sure we only evaluate
- the new `self' expression once. */
- tree save_arg = save_expr (TREE_VALUE (args));
- TREE_VALUE (args) = save_arg;
- check = java_check_reference (save_arg, 1);
- }
- /* Fall through. */
-
- case INVOKE_SUPER:
- case INVOKE_STATIC:
- {
- tree signature = build_java_signature (TREE_TYPE (method));
- func = build_known_method_ref (method, TREE_TYPE (method),
- DECL_CONTEXT (method),
- signature, args);
- }
- break;
-
- case INVOKE_INTERFACE:
- dtable = invoke_build_dtable (1, args);
- func = build_invokeinterface (dtable, method);
- break;
-
- default:
- abort ();
- }
-
- /* Ensure self_type is initialized, (invokestatic). FIXME */
- func = build1 (NOP_EXPR, build_pointer_type (TREE_TYPE (method)), func);
- }
-
- TREE_TYPE (patch) = TREE_TYPE (TREE_TYPE (method));
- TREE_OPERAND (patch, 0) = func;
- TREE_OPERAND (patch, 1) = args;
- patch = check_for_builtin (method, patch);
- original_call = patch;
-
- /* We're processing a `new TYPE ()' form. New is called and its
- returned value is the first argument to the constructor. We build
- a COMPOUND_EXPR and use saved expression so that the overall NEW
- expression value is a pointer to a newly created and initialized
- class. */
- if (TREE_CODE (original_call) == NEW_CLASS_EXPR)
- {
- tree class = DECL_CONTEXT (method);
- tree c1, saved_new, size, new;
- tree alloc_node;
-
- if (flag_emit_class_files || flag_emit_xref)
- {
- TREE_TYPE (patch) = build_pointer_type (class);
- return patch;
- }
- if (!TYPE_SIZE (class))
- safe_layout_class (class);
- size = size_in_bytes (class);
- alloc_node =
- (class_has_finalize_method (class) ? alloc_object_node
- : alloc_no_finalizer_node);
- new = build (CALL_EXPR, promote_type (class),
- build_address_of (alloc_node),
- tree_cons (NULL_TREE, build_class_ref (class),
- build_tree_list (NULL_TREE,
- size_in_bytes (class))),
- NULL_TREE);
- saved_new = save_expr (new);
- c1 = build_tree_list (NULL_TREE, saved_new);
- TREE_CHAIN (c1) = TREE_OPERAND (original_call, 1);
- TREE_OPERAND (original_call, 1) = c1;
- TREE_SET_CODE (original_call, CALL_EXPR);
- patch = build (COMPOUND_EXPR, TREE_TYPE (new), patch, saved_new);
- }
-
- /* If CHECK is set, then we are building a check to see if the object
- is NULL. */
- if (check != NULL_TREE)
- {
- patch = build (COMPOUND_EXPR, TREE_TYPE (patch), check, patch);
- TREE_SIDE_EFFECTS (patch) = 1;
- }
-
- /* In order to be able to modify PATCH later, we SAVE_EXPR it and
- put it as the first expression of a COMPOUND_EXPR. The second
- expression being an empty statement to be later patched if
- necessary. We remember a TREE_LIST (the PURPOSE is the method,
- the VALUE is the compound) in a hashtable and return a
- COMPOUND_EXPR built so that the result of the evaluation of the
- original PATCH node is returned. */
- if (STATIC_CLASS_INIT_OPT_P ()
- && current_function_decl && METHOD_STATIC (method))
- {
- tree list;
- tree fndecl = current_function_decl;
- tree save = save_expr (patch);
- tree type = TREE_TYPE (patch);
-
- patch = build (COMPOUND_EXPR, type, save, empty_stmt_node);
- list = tree_cons (method, patch,
- DECL_FUNCTION_STATIC_METHOD_INVOCATION_COMPOUND (fndecl));
-
- DECL_FUNCTION_STATIC_METHOD_INVOCATION_COMPOUND (fndecl) = list;
-
- patch = build (COMPOUND_EXPR, type, patch, save);
- }
-
- return patch;
-}
-
-static int
-invocation_mode (method, super)
- tree method;
- int super;
-{
- int access = get_access_flags_from_decl (method);
-
- if (super)
- return INVOKE_SUPER;
-
- if (access & ACC_STATIC)
- return INVOKE_STATIC;
-
- /* We have to look for a constructor before we handle nonvirtual
- calls; otherwise the constructor will look nonvirtual. */
- if (DECL_CONSTRUCTOR_P (method))
- return INVOKE_STATIC;
-
- if (access & ACC_FINAL || access & ACC_PRIVATE)
- return INVOKE_NONVIRTUAL;
-
- if (CLASS_FINAL (TYPE_NAME (DECL_CONTEXT (method))))
- return INVOKE_NONVIRTUAL;
-
- if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))))
- return INVOKE_INTERFACE;
-
- return INVOKE_VIRTUAL;
-}
-
-/* Retrieve a refined list of matching methods. It covers the step
- 15.11.2 (Compile-Time Step 2) */
-
-static tree
-lookup_method_invoke (lc, cl, class, name, arg_list)
- int lc;
- tree cl;
- tree class, name, arg_list;
-{
- tree atl = end_params_node; /* Arg Type List */
- tree method, signature, list, node;
- const char *candidates; /* Used for error report */
- char *dup;
-
- /* Fix the arguments */
- for (node = arg_list; node; node = TREE_CHAIN (node))
- {
- tree current_arg = TREE_TYPE (TREE_VALUE (node));
- /* Non primitive type may have to be resolved */
- if (!JPRIMITIVE_TYPE_P (current_arg))
- resolve_and_layout (current_arg, NULL_TREE);
- /* And promoted */
- if (TREE_CODE (current_arg) == RECORD_TYPE)
- current_arg = promote_type (current_arg);
- atl = tree_cons (NULL_TREE, current_arg, atl);
- }
-
- /* Presto. If we're dealing with an anonymous class and a
- constructor call, generate the right constructor now, since we
- know the arguments' types. */
-
- if (lc && ANONYMOUS_CLASS_P (class))
- {
- tree saved_current_class;
- tree mdecl = craft_constructor (TYPE_NAME (class), atl);
- saved_current_class = current_class;
- current_class = class;
- fix_constructors (mdecl);
- current_class = saved_current_class;
- }
-
- /* Find all candidates and then refine the list, searching for the
- most specific method. */
- list = find_applicable_accessible_methods_list (lc, class, name, atl);
- list = find_most_specific_methods_list (list);
- if (list && !TREE_CHAIN (list))
- return TREE_VALUE (list);
-
- /* Issue an error. List candidates if any. Candidates are listed
- only if accessible (non accessible methods may end-up here for
- the sake of a better error report). */
- candidates = NULL;
- if (list)
- {
- tree current;
- obstack_grow (&temporary_obstack, ". Candidates are:\n", 18);
- for (current = list; current; current = TREE_CHAIN (current))
- {
- tree cm = TREE_VALUE (current);
- char string [4096];
- if (!cm || not_accessible_p (class, cm, NULL_TREE, 0))
- continue;
- sprintf
- (string, " `%s' in `%s'%s",
- get_printable_method_name (cm),
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (cm)))),
- (TREE_CHAIN (current) ? "\n" : ""));
- obstack_grow (&temporary_obstack, string, strlen (string));
- }
- obstack_1grow (&temporary_obstack, '\0');
- candidates = obstack_finish (&temporary_obstack);
- }
- /* Issue the error message */
- method = make_node (FUNCTION_TYPE);
- TYPE_ARG_TYPES (method) = atl;
- signature = build_java_argument_signature (method);
- dup = xstrdup (lang_printable_name (class, 0));
- parse_error_context (cl, "Can't find %s `%s(%s)' in type `%s'%s",
- (lc ? "constructor" : "method"),
- (lc ? dup : IDENTIFIER_POINTER (name)),
- IDENTIFIER_POINTER (signature), dup,
- (candidates ? candidates : ""));
- free (dup);
- return NULL_TREE;
-}
-
-/* 15.11.2.1: Find Methods that are Applicable and Accessible. LC is 1
- when we're looking for a constructor. */
-
-static tree
-find_applicable_accessible_methods_list (lc, class, name, arglist)
- int lc;
- tree class, name, arglist;
-{
- static struct hash_table t, *searched_classes = NULL;
- static int search_not_done = 0;
- tree list = NULL_TREE, all_list = NULL_TREE;
-
- /* Check the hash table to determine if this class has been searched
- already. */
- if (searched_classes)
- {
- if (hash_lookup (searched_classes,
- (const hash_table_key) class, FALSE, NULL))
- return NULL;
- }
- else
- {
- hash_table_init (&t, hash_newfunc, java_hash_hash_tree_node,
- java_hash_compare_tree_node);
- searched_classes = &t;
- }
-
- search_not_done++;
- hash_lookup (searched_classes,
- (const hash_table_key) class, TRUE, NULL);
-
- if (!CLASS_LOADED_P (class) && !CLASS_FROM_SOURCE_P (class))
- {
- load_class (class, 1);
- safe_layout_class (class);
- }
-
- /* Search interfaces */
- if (TREE_CODE (TYPE_NAME (class)) == TYPE_DECL
- && CLASS_INTERFACE (TYPE_NAME (class)))
- {
- int i, n;
- tree basetype_vec = TYPE_BINFO_BASETYPES (class);
- search_applicable_methods_list (lc, TYPE_METHODS (class),
- name, arglist, &list, &all_list);
- n = TREE_VEC_LENGTH (basetype_vec);
- for (i = 1; i < n; i++)
- {
- tree t = BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i));
- tree rlist;
-
- rlist = find_applicable_accessible_methods_list (lc, t, name,
- arglist);
- list = chainon (rlist, list);
- }
- }
- /* Search classes */
- else
- {
- search_applicable_methods_list (lc, TYPE_METHODS (class),
- name, arglist, &list, &all_list);
-
- /* When looking finit$, class$ or instinit$, we turn LC to 1 so
- that we only search in class. Note that we should have found
- something at this point. */
- if (ID_FINIT_P (name) || ID_CLASSDOLLAR_P (name) || ID_INSTINIT_P (name))
- {
- lc = 1;
- if (!list)
- abort ();
- }
-
- /* We must search all interfaces of this class */
- if (!lc)
- {
- tree basetype_vec = TYPE_BINFO_BASETYPES (class);
- int n = TREE_VEC_LENGTH (basetype_vec), i;
- for (i = 1; i < n; i++)
- {
- tree t = BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i));
- if (t != object_type_node)
- {
- tree rlist
- = find_applicable_accessible_methods_list (lc, t,
- name, arglist);
- list = chainon (rlist, list);
- }
- }
- }
-
- /* Search superclass */
- if (!lc && CLASSTYPE_SUPER (class) != NULL_TREE)
- {
- tree rlist;
- class = CLASSTYPE_SUPER (class);
- rlist = find_applicable_accessible_methods_list (lc, class,
- name, arglist);
- list = chainon (rlist, list);
- }
- }
-
- search_not_done--;
-
- /* We're done. Reset the searched classes list and finally search
- java.lang.Object if it wasn't searched already. */
- if (!search_not_done)
- {
- if (!lc
- && TYPE_METHODS (object_type_node)
- && !hash_lookup (searched_classes,
- (const hash_table_key) object_type_node,
- FALSE, NULL))
- {
- search_applicable_methods_list (lc,
- TYPE_METHODS (object_type_node),
- name, arglist, &list, &all_list);
- }
- hash_table_free (searched_classes);
- searched_classes = NULL;
- }
-
- /* Either return the list obtained or all selected (but
- inaccessible) methods for better error report. */
- return (!list ? all_list : list);
-}
-
-/* Effectively search for the appropriate method in method */
-
-static void
-search_applicable_methods_list (lc, method, name, arglist, list, all_list)
- int lc;
- tree method, name, arglist;
- tree *list, *all_list;
-{
- for (; method; method = TREE_CHAIN (method))
- {
- /* When dealing with constructor, stop here, otherwise search
- other classes */
- if (lc && !DECL_CONSTRUCTOR_P (method))
- continue;
- else if (!lc && (DECL_CONSTRUCTOR_P (method)
- || (DECL_NAME (method) != name)))
- continue;
-
- if (argument_types_convertible (method, arglist))
- {
- /* Retain accessible methods only */
- if (!not_accessible_p (DECL_CONTEXT (current_function_decl),
- method, NULL_TREE, 0))
- *list = tree_cons (NULL_TREE, method, *list);
- else
- /* Also retain all selected method here */
- *all_list = tree_cons (NULL_TREE, method, *list);
- }
- }
-}
-
-/* 15.11.2.2 Choose the Most Specific Method */
-
-static tree
-find_most_specific_methods_list (list)
- tree list;
-{
- int max = 0;
- int abstract, candidates;
- tree current, new_list = NULL_TREE;
- for (current = list; current; current = TREE_CHAIN (current))
- {
- tree method;
- DECL_SPECIFIC_COUNT (TREE_VALUE (current)) = 0;
-
- for (method = list; method; method = TREE_CHAIN (method))
- {
- tree method_v, current_v;
- /* Don't test a method against itself */
- if (method == current)
- continue;
-
- method_v = TREE_VALUE (method);
- current_v = TREE_VALUE (current);
-
- /* Compare arguments and location where methods where declared */
- if (argument_types_convertible (method_v, current_v))
- {
- if (valid_method_invocation_conversion_p
- (DECL_CONTEXT (method_v), DECL_CONTEXT (current_v))
- || (INNER_CLASS_TYPE_P (DECL_CONTEXT (current_v))
- && enclosing_context_p (DECL_CONTEXT (method_v),
- DECL_CONTEXT (current_v))))
- {
- int v = (DECL_SPECIFIC_COUNT (current_v) +=
- (INNER_CLASS_TYPE_P (DECL_CONTEXT (current_v)) ? 2 : 1));
- max = (v > max ? v : max);
- }
- }
- }
- }
-
- /* Review the list and select the maximally specific methods */
- for (current = list, abstract = -1, candidates = -1;
- current; current = TREE_CHAIN (current))
- if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max)
- {
- new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list);
- abstract += (METHOD_ABSTRACT (TREE_VALUE (current)) ? 1 : 0);
- candidates++;
- }
-
- /* If we have several and they're all abstract, just pick the
- closest one. */
- if (candidates > 0 && (candidates == abstract))
- {
- new_list = nreverse (new_list);
- TREE_CHAIN (new_list) = NULL_TREE;
- }
-
- /* We have several (we couldn't find a most specific), all but one
- are abstract, we pick the only non abstract one. */
- if (candidates > 0 && (candidates == abstract+1))
- {
- for (current = new_list; current; current = TREE_CHAIN (current))
- if (!METHOD_ABSTRACT (TREE_VALUE (current)))
- {
- TREE_CHAIN (current) = NULL_TREE;
- new_list = current;
- }
- }
-
- /* If we can't find one, lower expectations and try to gather multiple
- maximally specific methods */
- while (!new_list && max)
- {
- while (--max > 0)
- {
- if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max)
- new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list);
- }
- }
-
- return new_list;
-}
-
-/* Make sure that the type of each M2_OR_ARGLIST arguments can be
- converted by method invocation conversion (5.3) to the type of the
- corresponding parameter of M1. Implementation expects M2_OR_ARGLIST
- to change less often than M1. */
-
-static int
-argument_types_convertible (m1, m2_or_arglist)
- tree m1, m2_or_arglist;
-{
- static tree m2_arg_value = NULL_TREE;
- static tree m2_arg_cache = NULL_TREE;
- static int initialized_p;
-
- register tree m1_arg, m2_arg;
-
- /* Register M2_ARG_VALUE and M2_ARG_CACHE with the garbage
- collector. */
- if (!initialized_p)
- {
- ggc_add_tree_root (&m2_arg_value, 1);
- ggc_add_tree_root (&m2_arg_cache, 1);
- initialized_p = 1;
- }
-
- SKIP_THIS_AND_ARTIFICIAL_PARMS (m1_arg, m1)
-
- if (m2_arg_value == m2_or_arglist)
- m2_arg = m2_arg_cache;
- else
- {
- /* M2_OR_ARGLIST can be a function DECL or a raw list of
- argument types */
- if (m2_or_arglist && TREE_CODE (m2_or_arglist) == FUNCTION_DECL)
- {
- m2_arg = TYPE_ARG_TYPES (TREE_TYPE (m2_or_arglist));
- if (!METHOD_STATIC (m2_or_arglist))
- m2_arg = TREE_CHAIN (m2_arg);
- }
- else
- m2_arg = m2_or_arglist;
-
- m2_arg_value = m2_or_arglist;
- m2_arg_cache = m2_arg;
- }
-
- while (m1_arg != end_params_node && m2_arg != end_params_node)
- {
- resolve_and_layout (TREE_VALUE (m1_arg), NULL_TREE);
- if (!valid_method_invocation_conversion_p (TREE_VALUE (m1_arg),
- TREE_VALUE (m2_arg)))
- break;
- m1_arg = TREE_CHAIN (m1_arg);
- m2_arg = TREE_CHAIN (m2_arg);
- }
- return m1_arg == end_params_node && m2_arg == end_params_node;
-}
-
-/* Qualification routines */
-
-static void
-qualify_ambiguous_name (id)
- tree id;
-{
- tree qual, qual_wfl, name = NULL_TREE, decl, ptr_type = NULL_TREE,
- saved_current_class;
- int again, super_found = 0, this_found = 0, new_array_found = 0;
- int code;
-
- /* We first qualify the first element, then derive qualification of
- others based on the first one. If the first element is qualified
- by a resolution (field or type), this resolution is stored in the
- QUAL_RESOLUTION of the qual element being examined. We need to
- save the current_class since the use of SUPER might change the
- its value. */
- saved_current_class = current_class;
- qual = EXPR_WFL_QUALIFICATION (id);
- do {
-
- /* Simple qualified expression feature a qual_wfl that is a
- WFL. Expression derived from a primary feature more complicated
- things like a CALL_EXPR. Expression from primary need to be
- worked out to extract the part on which the qualification will
- take place. */
- qual_wfl = QUAL_WFL (qual);
- switch (TREE_CODE (qual_wfl))
- {
- case CALL_EXPR:
- qual_wfl = TREE_OPERAND (qual_wfl, 0);
- if (TREE_CODE (qual_wfl) != EXPR_WITH_FILE_LOCATION
- || (EXPR_WFL_QUALIFICATION (qual_wfl)
- && TREE_CODE (EXPR_WFL_QUALIFICATION (qual_wfl)) == TREE_LIST))
- {
- qual = EXPR_WFL_QUALIFICATION (qual_wfl);
- qual_wfl = QUAL_WFL (qual);
- }
- break;
- case NEW_ARRAY_EXPR:
- case NEW_ANONYMOUS_ARRAY_EXPR:
- qual = TREE_CHAIN (qual);
- again = new_array_found = 1;
- continue;
- case CONVERT_EXPR:
- break;
- case NEW_CLASS_EXPR:
- qual_wfl = TREE_OPERAND (qual_wfl, 0);
- break;
- case ARRAY_REF:
- while (TREE_CODE (qual_wfl) == ARRAY_REF)
- qual_wfl = TREE_OPERAND (qual_wfl, 0);
- break;
- case STRING_CST:
- qual = TREE_CHAIN (qual);
- qual_wfl = QUAL_WFL (qual);
- break;
- case CLASS_LITERAL:
- qual = TREE_CHAIN (qual);
- qual_wfl = QUAL_WFL (qual);
- break;
- default:
- /* Fix for -Wall. Just break doing nothing */
- break;
- }
-
- ptr_type = current_class;
- again = 0;
- code = TREE_CODE (qual_wfl);
-
- /* Pos evaluation: non WFL leading expression nodes */
- if (code == CONVERT_EXPR
- && TREE_CODE (TREE_TYPE (qual_wfl)) == EXPR_WITH_FILE_LOCATION)
- name = EXPR_WFL_NODE (TREE_TYPE (qual_wfl));
-
- else if (code == INTEGER_CST)
- name = qual_wfl;
-
- else if (code == CONVERT_EXPR &&
- TREE_CODE (TREE_OPERAND (qual_wfl, 0)) == EXPR_WITH_FILE_LOCATION)
- name = TREE_OPERAND (qual_wfl, 0);
-
- else if (code == CONVERT_EXPR
- && TREE_CODE (TREE_OPERAND (qual_wfl, 0)) == CALL_EXPR
- && (TREE_CODE (TREE_OPERAND (TREE_OPERAND (qual_wfl, 0), 0))
- == EXPR_WITH_FILE_LOCATION))
- name = TREE_OPERAND (TREE_OPERAND (qual_wfl, 0), 0);
-
- else if ((code == ARRAY_REF || code == CALL_EXPR || code == MODIFY_EXPR) &&
- TREE_CODE (TREE_OPERAND (qual_wfl, 0)) == EXPR_WITH_FILE_LOCATION)
- name = EXPR_WFL_NODE (TREE_OPERAND (qual_wfl, 0));
-
- else if (code == TREE_LIST)
- name = EXPR_WFL_NODE (TREE_PURPOSE (qual_wfl));
-
- else if (code == STRING_CST || code == CONDITIONAL_EXPR
- || code == PLUS_EXPR)
- {
- qual = TREE_CHAIN (qual);
- qual_wfl = QUAL_WFL (qual);
- again = 1;
- }
- else
- {
- name = EXPR_WFL_NODE (qual_wfl);
- if (!name)
- {
- qual = EXPR_WFL_QUALIFICATION (qual_wfl);
- again = 1;
- }
- }
-
- /* If we have a THIS (from a primary), we set the context accordingly */
- if (name == this_identifier_node)
- {
- /* This isn't really elegant. One more added irregularity
- before I start using COMPONENT_REF (hopefully very soon.) */
- if (TREE_CODE (TREE_PURPOSE (qual)) == ARRAY_REF
- && TREE_CODE (TREE_OPERAND (TREE_PURPOSE (qual), 0)) ==
- EXPR_WITH_FILE_LOCATION
- && EXPR_WFL_NODE (TREE_OPERAND (TREE_PURPOSE (qual), 0)) ==
- this_identifier_node)
- {
- qual = TREE_OPERAND (TREE_PURPOSE (qual), 0);
- qual = EXPR_WFL_QUALIFICATION (qual);
- }
- qual = TREE_CHAIN (qual);
- qual_wfl = QUAL_WFL (qual);
- if (TREE_CODE (qual_wfl) == CALL_EXPR)
- again = 1;
- else if (TREE_CODE (qual_wfl) == EXPR_WITH_FILE_LOCATION)
- name = EXPR_WFL_NODE (qual_wfl);
- else if (TREE_CODE (qual_wfl) == NEW_CLASS_EXPR)
- name = TREE_OPERAND (qual_wfl, 0);
- this_found = 1;
- }
- /* If we have a SUPER, we set the context accordingly */
- if (name == super_identifier_node)
- {
- current_class = CLASSTYPE_SUPER (ptr_type);
- /* Check that there is such a thing as a super class. If not,
- return. The error will be caught later on, during the
- resolution */
- if (!current_class)
- {
- current_class = saved_current_class;
- return;
- }
- qual = TREE_CHAIN (qual);
- /* Do one more interation to set things up */
- super_found = again = 1;
- }
- } while (again);
-
- /* If name appears within the scope of a local variable declaration
- or parameter declaration, then it is an expression name. We don't
- carry this test out if we're in the context of the use of SUPER
- or THIS */
- if (!this_found && !super_found
- && TREE_CODE (name) != STRING_CST && TREE_CODE (name) != INTEGER_CST
- && (decl = IDENTIFIER_LOCAL_VALUE (name)))
- {
- RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1;
- QUAL_RESOLUTION (qual) = decl;
- }
-
- /* If within the class/interface NAME was found to be used there
- exists a (possibly inherited) field named NAME, then this is an
- expression name. If we saw a NEW_ARRAY_EXPR before and want to
- address length, it is OK. */
- else if ((decl = lookup_field_wrapper (ptr_type, name))
- || name == length_identifier_node)
- {
- RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1;
- QUAL_RESOLUTION (qual) = (new_array_found ? NULL_TREE : decl);
- }
-
- /* We reclassify NAME as yielding to a type name resolution if:
- - NAME is a class/interface declared within the compilation
- unit containing NAME,
- - NAME is imported via a single-type-import declaration,
- - NAME is declared in an another compilation unit of the package
- of the compilation unit containing NAME,
- - NAME is declared by exactly on type-import-on-demand declaration
- of the compilation unit containing NAME.
- - NAME is actually a STRING_CST.
- This can't happen if the expression was qualified by `this.' */
- else if (! this_found &&
- (TREE_CODE (name) == STRING_CST ||
- TREE_CODE (name) == INTEGER_CST ||
- (decl = resolve_and_layout (name, NULL_TREE))))
- {
- RESOLVE_TYPE_NAME_P (qual_wfl) = 1;
- QUAL_RESOLUTION (qual) = decl;
- }
-
- /* Method call, array references and cast are expression name */
- else if (TREE_CODE (QUAL_WFL (qual)) == CALL_EXPR
- || TREE_CODE (QUAL_WFL (qual)) == ARRAY_REF
- || TREE_CODE (QUAL_WFL (qual)) == CONVERT_EXPR
- || TREE_CODE (QUAL_WFL (qual)) == MODIFY_EXPR)
- RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1;
-
- /* Check here that NAME isn't declared by more than one
- type-import-on-demand declaration of the compilation unit
- containing NAME. FIXME */
-
- /* Otherwise, NAME is reclassified as a package name */
- else
- RESOLVE_PACKAGE_NAME_P (qual_wfl) = 1;
-
- /* Propagate the qualification accross other components of the
- qualified name */
- for (qual = TREE_CHAIN (qual); qual;
- qual_wfl = QUAL_WFL (qual), qual = TREE_CHAIN (qual))
- {
- if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
- RESOLVE_PACKAGE_NAME_P (QUAL_WFL (qual)) = 1;
- else
- RESOLVE_EXPRESSION_NAME_P (QUAL_WFL (qual)) = 1;
- }
-
- /* Store the global qualification for the ambiguous part of ID back
- into ID fields */
- if (RESOLVE_EXPRESSION_NAME_P (qual_wfl))
- RESOLVE_EXPRESSION_NAME_P (id) = 1;
- else if (RESOLVE_TYPE_NAME_P (qual_wfl))
- RESOLVE_TYPE_NAME_P (id) = 1;
- else if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
- RESOLVE_PACKAGE_NAME_P (id) = 1;
-
- /* Restore the current class */
- current_class = saved_current_class;
-}
-
-static int
-breakdown_qualified (left, right, source)
- tree *left, *right, source;
-{
- char *p, *base;
- int l = IDENTIFIER_LENGTH (source);
-
- base = alloca (l + 1);
- memcpy (base, IDENTIFIER_POINTER (source), l + 1);
-
- /* Breakdown NAME into REMAINDER . IDENTIFIER */
- p = base + l - 1;
- while (*p != '.' && p != base)
- p--;
-
- /* We didn't find a '.'. Return an error */
- if (p == base)
- return 1;
-
- *p = '\0';
- if (right)
- *right = get_identifier (p+1);
- *left = get_identifier (base);
-
- return 0;
-}
-
-/* Return TRUE if two classes are from the same package. */
-
-static int
-in_same_package (name1, name2)
- tree name1, name2;
-{
- tree tmp;
- tree pkg1;
- tree pkg2;
-
- if (TREE_CODE (name1) == TYPE_DECL)
- name1 = DECL_NAME (name1);
- if (TREE_CODE (name2) == TYPE_DECL)
- name2 = DECL_NAME (name2);
-
- if (QUALIFIED_P (name1) != QUALIFIED_P (name2))
- /* One in empty package. */
- return 0;
-
- if (QUALIFIED_P (name1) == 0 && QUALIFIED_P (name2) == 0)
- /* Both in empty package. */
- return 1;
-
- breakdown_qualified (&pkg1, &tmp, name1);
- breakdown_qualified (&pkg2, &tmp, name2);
-
- return (pkg1 == pkg2);
-}
-
-/* Patch tree nodes in a function body. When a BLOCK is found, push
- local variable decls if present.
- Same as java_complete_lhs, but does resolve static finals to values. */
-
-static tree
-java_complete_tree (node)
- tree node;
-{
- node = java_complete_lhs (node);
- if (JDECL_P (node) && CLASS_FINAL_VARIABLE_P (node)
- && DECL_INITIAL (node) != NULL_TREE
- && !flag_emit_xref)
- {
- tree value = DECL_INITIAL (node);
- DECL_INITIAL (node) = NULL_TREE;
- value = fold_constant_for_init (value, node);
- DECL_INITIAL (node) = value;
- if (value != NULL_TREE)
- {
- /* fold_constant_for_init sometimes widens the original type
- of the constant (i.e. byte to int). It's not desirable,
- especially if NODE is a function argument. */
- if ((TREE_CODE (value) == INTEGER_CST
- || TREE_CODE (value) == REAL_CST)
- && TREE_TYPE (node) != TREE_TYPE (value))
- return convert (TREE_TYPE (node), value);
- else
- return value;
- }
- }
- return node;
-}
-
-static tree
-java_stabilize_reference (node)
- tree node;
-{
- if (TREE_CODE (node) == COMPOUND_EXPR)
- {
- tree op0 = TREE_OPERAND (node, 0);
- tree op1 = TREE_OPERAND (node, 1);
- TREE_OPERAND (node, 0) = save_expr (op0);
- TREE_OPERAND (node, 1) = java_stabilize_reference (op1);
- return node;
- }
- return stabilize_reference (node);
-}
-
-/* Patch tree nodes in a function body. When a BLOCK is found, push
- local variable decls if present.
- Same as java_complete_tree, but does not resolve static finals to values. */
-
-static tree
-java_complete_lhs (node)
- tree node;
-{
- tree nn, cn, wfl_op1, wfl_op2, wfl_op3;
- int flag;
-
- /* CONVERT_EXPR always has its type set, even though it needs to be
- worked out. */
- if (TREE_TYPE (node) && TREE_CODE (node) != CONVERT_EXPR)
- return node;
-
- /* The switch block implements cases processing container nodes
- first. Contained nodes are always written back. Leaves come
- next and return a value. */
- switch (TREE_CODE (node))
- {
- case BLOCK:
-
- /* 1- Block section.
- Set the local values on decl names so we can identify them
- faster when they're referenced. At that stage, identifiers
- are legal so we don't check for declaration errors. */
- for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn))
- {
- DECL_CONTEXT (cn) = current_function_decl;
- IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = cn;
- }
- if (BLOCK_EXPR_BODY (node) == NULL_TREE)
- CAN_COMPLETE_NORMALLY (node) = 1;
- else
- {
- tree stmt = BLOCK_EXPR_BODY (node);
- tree *ptr;
- int error_seen = 0;
- if (TREE_CODE (stmt) == COMPOUND_EXPR)
- {
- /* Re-order from (((A; B); C); ...; Z) to
- (A; (B; (C ; (...; Z)))).
- This makes it easier to scan the statements left-to-right
- without using recursion (which might overflow the stack
- if the block has many statements. */
- for (;;)
- {
- tree left = TREE_OPERAND (stmt, 0);
- if (TREE_CODE (left) != COMPOUND_EXPR)
- break;
- TREE_OPERAND (stmt, 0) = TREE_OPERAND (left, 1);
- TREE_OPERAND (left, 1) = stmt;
- stmt = left;
- }
- BLOCK_EXPR_BODY (node) = stmt;
- }
-
- /* Now do the actual complete, without deep recursion for
- long blocks. */
- ptr = &BLOCK_EXPR_BODY (node);
- while (TREE_CODE (*ptr) == COMPOUND_EXPR
- && TREE_OPERAND (*ptr, 1) != empty_stmt_node)
- {
- tree cur = java_complete_tree (TREE_OPERAND (*ptr, 0));
- tree *next = &TREE_OPERAND (*ptr, 1);
- TREE_OPERAND (*ptr, 0) = cur;
- if (cur == empty_stmt_node)
- {
- /* Optimization; makes it easier to detect empty bodies.
- Most useful for <clinit> with all-constant initializer. */
- *ptr = *next;
- continue;
- }
- if (TREE_CODE (cur) == ERROR_MARK)
- error_seen++;
- else if (! CAN_COMPLETE_NORMALLY (cur))
- {
- wfl_op2 = *next;
- for (;;)
- {
- if (TREE_CODE (wfl_op2) == BLOCK)
- wfl_op2 = BLOCK_EXPR_BODY (wfl_op2);
- else if (TREE_CODE (wfl_op2) == COMPOUND_EXPR)
- wfl_op2 = TREE_OPERAND (wfl_op2, 0);
- else
- break;
- }
- if (TREE_CODE (wfl_op2) != CASE_EXPR
- && TREE_CODE (wfl_op2) != DEFAULT_EXPR)
- unreachable_stmt_error (*ptr);
- }
- ptr = next;
- }
- *ptr = java_complete_tree (*ptr);
-
- if (TREE_CODE (*ptr) == ERROR_MARK || error_seen > 0)
- return error_mark_node;
- CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (*ptr);
- }
- /* Turn local bindings to null */
- for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn))
- IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = NULL_TREE;
-
- TREE_TYPE (node) = void_type_node;
- break;
-
- /* 2- They are expressions but ultimately deal with statements */
-
- case THROW_EXPR:
- wfl_op1 = TREE_OPERAND (node, 0);
- COMPLETE_CHECK_OP_0 (node);
- /* 14.19 A throw statement cannot complete normally. */
- CAN_COMPLETE_NORMALLY (node) = 0;
- return patch_throw_statement (node, wfl_op1);
-
- case SYNCHRONIZED_EXPR:
- wfl_op1 = TREE_OPERAND (node, 0);
- return patch_synchronized_statement (node, wfl_op1);
-
- case TRY_EXPR:
- return patch_try_statement (node);
-
- case TRY_FINALLY_EXPR:
- COMPLETE_CHECK_OP_0 (node);
- COMPLETE_CHECK_OP_1 (node);
- if (TREE_OPERAND (node, 0) == empty_stmt_node)
- return TREE_OPERAND (node, 1);
- if (TREE_OPERAND (node, 1) == empty_stmt_node)
- return TREE_OPERAND (node, 0);
- CAN_COMPLETE_NORMALLY (node)
- = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0))
- && CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)));
- TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 0));
- return node;
-
- case LABELED_BLOCK_EXPR:
- PUSH_LABELED_BLOCK (node);
- if (LABELED_BLOCK_BODY (node))
- COMPLETE_CHECK_OP_1 (node);
- TREE_TYPE (node) = void_type_node;
- POP_LABELED_BLOCK ();
-
- if (LABELED_BLOCK_BODY (node) == empty_stmt_node)
- {
- LABELED_BLOCK_BODY (node) = NULL_TREE;
- CAN_COMPLETE_NORMALLY (node) = 1;
- }
- else if (CAN_COMPLETE_NORMALLY (LABELED_BLOCK_BODY (node)))
- CAN_COMPLETE_NORMALLY (node) = 1;
- return node;
-
- case EXIT_BLOCK_EXPR:
- /* We don't complete operand 1, because it's the return value of
- the EXIT_BLOCK_EXPR which doesn't exist it Java */
- return patch_bc_statement (node);
-
- case CASE_EXPR:
- cn = java_complete_tree (TREE_OPERAND (node, 0));
- if (cn == error_mark_node)
- return cn;
-
- /* First, the case expression must be constant. Values of final
- fields are accepted. */
- cn = fold (cn);
- if ((TREE_CODE (cn) == COMPOUND_EXPR || TREE_CODE (cn) == COMPONENT_REF)
- && JDECL_P (TREE_OPERAND (cn, 1))
- && FIELD_FINAL (TREE_OPERAND (cn, 1))
- && DECL_INITIAL (TREE_OPERAND (cn, 1)))
- {
- cn = fold_constant_for_init (DECL_INITIAL (TREE_OPERAND (cn, 1)),
- TREE_OPERAND (cn, 1));
- }
- /* Accept final locals too. */
- else if (TREE_CODE (cn) == VAR_DECL && DECL_FINAL (cn))
- cn = fold_constant_for_init (DECL_INITIAL (cn), cn);
-
- if (!TREE_CONSTANT (cn) && !flag_emit_xref)
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
- parse_error_context (node, "Constant expression required");
- return error_mark_node;
- }
-
- nn = ctxp->current_loop;
-
- /* It must be assignable to the type of the switch expression. */
- if (!try_builtin_assignconv (NULL_TREE,
- TREE_TYPE (TREE_OPERAND (nn, 0)), cn))
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
- parse_error_context
- (wfl_operator,
- "Incompatible type for case. Can't convert `%s' to `int'",
- lang_printable_name (TREE_TYPE (cn), 0));
- return error_mark_node;
- }
-
- cn = fold (convert (int_type_node, cn));
- TREE_CONSTANT_OVERFLOW (cn) = 0;
- CAN_COMPLETE_NORMALLY (cn) = 1;
-
- /* Save the label on a list so that we can later check for
- duplicates. */
- case_label_list = tree_cons (node, cn, case_label_list);
-
- /* Multiple instance of a case label bearing the same value is
- checked later. The case expression is all right so far. */
- if (TREE_CODE (cn) == VAR_DECL)
- cn = DECL_INITIAL (cn);
- TREE_OPERAND (node, 0) = cn;
- TREE_TYPE (node) = void_type_node;
- CAN_COMPLETE_NORMALLY (node) = 1;
- TREE_SIDE_EFFECTS (node) = 1;
- break;
-
- case DEFAULT_EXPR:
- nn = ctxp->current_loop;
- /* Only one default label is allowed per switch statement */
- if (SWITCH_HAS_DEFAULT (nn))
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
- parse_error_context (wfl_operator,
- "Duplicate case label: `default'");
- return error_mark_node;
- }
- else
- SWITCH_HAS_DEFAULT (nn) = 1;
- TREE_TYPE (node) = void_type_node;
- TREE_SIDE_EFFECTS (node) = 1;
- CAN_COMPLETE_NORMALLY (node) = 1;
- break;
-
- case SWITCH_EXPR:
- case LOOP_EXPR:
- PUSH_LOOP (node);
- /* Check whether the loop was enclosed in a labeled
- statement. If not, create one, insert the loop in it and
- return the node */
- nn = patch_loop_statement (node);
-
- /* Anyways, walk the body of the loop */
- if (TREE_CODE (node) == LOOP_EXPR)
- TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
- /* Switch statement: walk the switch expression and the cases */
- else
- node = patch_switch_statement (node);
-
- if (node == error_mark_node || TREE_OPERAND (node, 0) == error_mark_node)
- nn = error_mark_node;
- else
- {
- TREE_TYPE (nn) = TREE_TYPE (node) = void_type_node;
- /* If we returned something different, that's because we
- inserted a label. Pop the label too. */
- if (nn != node)
- {
- if (CAN_COMPLETE_NORMALLY (node))
- CAN_COMPLETE_NORMALLY (nn) = 1;
- POP_LABELED_BLOCK ();
- }
- }
- POP_LOOP ();
- return nn;
-
- case EXIT_EXPR:
- TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
- return patch_exit_expr (node);
-
- case COND_EXPR:
- /* Condition */
- TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
- if (TREE_OPERAND (node, 0) == error_mark_node)
- return error_mark_node;
- /* then-else branches */
- TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
- if (TREE_OPERAND (node, 1) == error_mark_node)
- return error_mark_node;
- TREE_OPERAND (node, 2) = java_complete_tree (TREE_OPERAND (node, 2));
- if (TREE_OPERAND (node, 2) == error_mark_node)
- return error_mark_node;
- return patch_if_else_statement (node);
- break;
-
- case CONDITIONAL_EXPR:
- /* Condition */
- wfl_op1 = TREE_OPERAND (node, 0);
- COMPLETE_CHECK_OP_0 (node);
- wfl_op2 = TREE_OPERAND (node, 1);
- COMPLETE_CHECK_OP_1 (node);
- wfl_op3 = TREE_OPERAND (node, 2);
- COMPLETE_CHECK_OP_2 (node);
- return patch_conditional_expr (node, wfl_op1, wfl_op2);
-
- /* 3- Expression section */
- case COMPOUND_EXPR:
- wfl_op2 = TREE_OPERAND (node, 1);
- TREE_OPERAND (node, 0) = nn =
- java_complete_tree (TREE_OPERAND (node, 0));
- if (wfl_op2 == empty_stmt_node)
- CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (nn);
- else
- {
- if (! CAN_COMPLETE_NORMALLY (nn) && TREE_CODE (nn) != ERROR_MARK)
- {
- /* An unreachable condition in a do-while statement
- is *not* (technically) an unreachable statement. */
- nn = wfl_op2;
- if (TREE_CODE (nn) == EXPR_WITH_FILE_LOCATION)
- nn = EXPR_WFL_NODE (nn);
- if (TREE_CODE (nn) != EXIT_EXPR)
- {
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op2);
- parse_error_context (wfl_operator, "Unreachable statement");
- }
- }
- TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
- if (TREE_OPERAND (node, 1) == error_mark_node)
- return error_mark_node;
- /* Even though we might allow the case where the first
- operand doesn't return normally, we still should compute
- CAN_COMPLETE_NORMALLY correctly. */
- CAN_COMPLETE_NORMALLY (node)
- = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0))
- && CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)));
- }
- TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 1));
- break;
-
- case RETURN_EXPR:
- /* CAN_COMPLETE_NORMALLY (node) = 0; */
- return patch_return (node);
-
- case EXPR_WITH_FILE_LOCATION:
- if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */
- || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE)
- {
- tree wfl = node;
- node = resolve_expression_name (node, NULL);
- if (node == error_mark_node)
- return node;
- /* Keep line number information somewhere were it doesn't
- disrupt the completion process. */
- if (flag_emit_xref && TREE_CODE (node) != CALL_EXPR)
- {
- EXPR_WFL_NODE (wfl) = TREE_OPERAND (node, 1);
- TREE_OPERAND (node, 1) = wfl;
- }
- CAN_COMPLETE_NORMALLY (node) = 1;
- }
- else
- {
- tree body;
- int save_lineno = lineno;
- lineno = EXPR_WFL_LINENO (node);
- body = java_complete_tree (EXPR_WFL_NODE (node));
- lineno = save_lineno;
- EXPR_WFL_NODE (node) = body;
- TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (body);
- CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (body);
- if (body == empty_stmt_node || TREE_CONSTANT (body))
- {
- /* Makes it easier to constant fold, detect empty bodies. */
- return body;
- }
- if (body == error_mark_node)
- {
- /* Its important for the evaluation of assignment that
- this mark on the TREE_TYPE is propagated. */
- TREE_TYPE (node) = error_mark_node;
- return error_mark_node;
- }
- else
- TREE_TYPE (node) = TREE_TYPE (EXPR_WFL_NODE (node));
-
- }
- break;
-
- case NEW_ARRAY_EXPR:
- /* Patch all the dimensions */
- flag = 0;
- for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn))
- {
- int location = EXPR_WFL_LINECOL (TREE_VALUE (cn));
- tree dim = convert (int_type_node,
- java_complete_tree (TREE_VALUE (cn)));
- if (dim == error_mark_node)
- {
- flag = 1;
- continue;
- }
- else
- {
- TREE_VALUE (cn) = dim;
- /* Setup the location of the current dimension, for
- later error report. */
- TREE_PURPOSE (cn) =
- build_expr_wfl (NULL_TREE, input_filename, 0, 0);
- EXPR_WFL_LINECOL (TREE_PURPOSE (cn)) = location;
- }
- }
- /* They complete the array creation expression, if no errors
- were found. */
- CAN_COMPLETE_NORMALLY (node) = 1;
- return (flag ? error_mark_node
- : force_evaluation_order (patch_newarray (node)));
-
- case NEW_ANONYMOUS_ARRAY_EXPR:
- /* Create the array type if necessary. */
- if (ANONYMOUS_ARRAY_DIMS_SIG (node))
- {
- tree type = ANONYMOUS_ARRAY_BASE_TYPE (node);
- if (!(type = resolve_type_during_patch (type)))
- return error_mark_node;
- type = build_array_from_name (type, NULL_TREE,
- ANONYMOUS_ARRAY_DIMS_SIG (node), NULL);
- ANONYMOUS_ARRAY_BASE_TYPE (node) = build_pointer_type (type);
- }
- node = patch_new_array_init (ANONYMOUS_ARRAY_BASE_TYPE (node),
- ANONYMOUS_ARRAY_INITIALIZER (node));
- if (node == error_mark_node)
- return error_mark_node;
- CAN_COMPLETE_NORMALLY (node) = 1;
- return node;
-
- case NEW_CLASS_EXPR:
- case CALL_EXPR:
- /* Complete function's argument(s) first */
- if (complete_function_arguments (node))
- return error_mark_node;
- else
- {
- tree decl, wfl = TREE_OPERAND (node, 0);
- int in_this = CALL_THIS_CONSTRUCTOR_P (node);
- int from_super = (EXPR_WFL_NODE (TREE_OPERAND (node, 0)) ==
- super_identifier_node);
-
- node = patch_method_invocation (node, NULL_TREE, NULL_TREE,
- from_super, 0, &decl);
- if (node == error_mark_node)
- return error_mark_node;
-
- check_thrown_exceptions (EXPR_WFL_LINECOL (node), decl);
- /* If we call this(...), register signature and positions */
- if (in_this)
- DECL_CONSTRUCTOR_CALLS (current_function_decl) =
- tree_cons (wfl, decl,
- DECL_CONSTRUCTOR_CALLS (current_function_decl));
- CAN_COMPLETE_NORMALLY (node) = 1;
- return force_evaluation_order (node);
- }
-
- case MODIFY_EXPR:
- /* Save potential wfls */
- wfl_op1 = TREE_OPERAND (node, 0);
- TREE_OPERAND (node, 0) = nn = java_complete_lhs (wfl_op1);
-
- if (MODIFY_EXPR_FROM_INITIALIZATION_P (node)
- && TREE_CODE (nn) == VAR_DECL && TREE_STATIC (nn)
- && DECL_INITIAL (nn) != NULL_TREE)
- {
- tree value;
-
- value = fold_constant_for_init (nn, nn);
-
- /* When we have a primitype type, or a string and we're not
- emitting a class file, we actually don't want to generate
- anything for the assignment. */
- if (value != NULL_TREE &&
- (JPRIMITIVE_TYPE_P (TREE_TYPE (value)) ||
- (TREE_TYPE (value) == string_ptr_type_node &&
- ! flag_emit_class_files)))
- {
- /* Prepare node for patch_assignment */
- TREE_OPERAND (node, 1) = value;
- /* Call patch assignment to verify the assignment */
- if (patch_assignment (node, wfl_op1) == error_mark_node)
- return error_mark_node;
- /* Set DECL_INITIAL properly (a conversion might have
- been decided by patch_assignment) and return the
- empty statement. */
- else
- {
- tree patched = patch_string (TREE_OPERAND (node, 1));
- if (patched)
- DECL_INITIAL (nn) = patched;
- else
- DECL_INITIAL (nn) = TREE_OPERAND (node, 1);
- DECL_FIELD_FINAL_IUD (nn) = 1;
- return empty_stmt_node;
- }
- }
- if (! flag_emit_class_files)
- DECL_INITIAL (nn) = NULL_TREE;
- }
- wfl_op2 = TREE_OPERAND (node, 1);
-
- if (TREE_OPERAND (node, 0) == error_mark_node)
- return error_mark_node;
-
- flag = COMPOUND_ASSIGN_P (wfl_op2);
- if (flag)
- {
- /* This might break when accessing outer field from inner
- class. TESTME, FIXME */
- tree lvalue = java_stabilize_reference (TREE_OPERAND (node, 0));
-
- /* Hand stabilize the lhs on both places */
- TREE_OPERAND (node, 0) = lvalue;
- TREE_OPERAND (TREE_OPERAND (node, 1), 0) =
- (flag_emit_class_files ? lvalue : save_expr (lvalue));
-
- /* 15.25.2.a: Left hand is not an array access. FIXME */
- /* Now complete the RHS. We write it back later on. */
- nn = java_complete_tree (TREE_OPERAND (node, 1));
-
- if ((cn = patch_string (nn)))
- nn = cn;
-
- /* The last part of the rewrite for E1 op= E2 is to have
- E1 = (T)(E1 op E2), with T being the type of E1. */
- nn = java_complete_tree (build_cast (EXPR_WFL_LINECOL (wfl_op2),
- TREE_TYPE (lvalue), nn));
-
- /* If the assignment is compound and has reference type,
- then ensure the LHS has type String and nothing else. */
- if (JREFERENCE_TYPE_P (TREE_TYPE (lvalue))
- && ! JSTRING_TYPE_P (TREE_TYPE (lvalue)))
- parse_error_context (wfl_op2,
- "Incompatible type for `+='. Can't convert `%s' to `java.lang.String'",
- lang_printable_name (TREE_TYPE (lvalue), 0));
-
- /* 15.25.2.b: Left hand is an array access. FIXME */
- }
-
- /* If we're about to patch a NEW_ARRAY_INIT, we call a special
- function to complete this RHS. Note that a NEW_ARRAY_INIT
- might have been already fully expanded if created as a result
- of processing an anonymous array initializer. We avoid doing
- the operation twice by testing whether the node already bears
- a type. */
- else if (TREE_CODE (wfl_op2) == NEW_ARRAY_INIT && !TREE_TYPE (wfl_op2))
- nn = patch_new_array_init (TREE_TYPE (TREE_OPERAND (node, 0)),
- TREE_OPERAND (node, 1));
- /* Otherwise we simply complete the RHS */
- else
- nn = java_complete_tree (TREE_OPERAND (node, 1));
-
- if (nn == error_mark_node)
- return error_mark_node;
-
- /* Write back the RHS as we evaluated it. */
- TREE_OPERAND (node, 1) = nn;
-
- /* In case we're handling = with a String as a RHS, we need to
- produce a String out of the RHS (it might still be a
- STRING_CST or a StringBuffer at this stage */
- if ((nn = patch_string (TREE_OPERAND (node, 1))))
- TREE_OPERAND (node, 1) = nn;
-
- if ((nn = outer_field_access_fix (wfl_op1, TREE_OPERAND (node, 0),
- TREE_OPERAND (node, 1))))
- {
- /* We return error_mark_node if outer_field_access_fix
- detects we write into a final. */
- if (nn == error_mark_node)
- return error_mark_node;
- node = nn;
- }
- else
- {
- node = patch_assignment (node, wfl_op1);
- if (node == error_mark_node)
- return error_mark_node;
- /* Reorganize the tree if necessary. */
- if (flag && (!JREFERENCE_TYPE_P (TREE_TYPE (node))
- || JSTRING_P (TREE_TYPE (node))))
- node = java_refold (node);
- }
-
- /* Seek to set DECL_INITIAL to a proper value, since it might have
- undergone a conversion in patch_assignment. We do that only when
- it's necessary to have DECL_INITIAL properly set. */
- nn = TREE_OPERAND (node, 0);
- if (TREE_CODE (nn) == VAR_DECL
- && DECL_INITIAL (nn) && CONSTANT_VALUE_P (DECL_INITIAL (nn))
- && FIELD_STATIC (nn) && FIELD_FINAL (nn)
- && (JPRIMITIVE_TYPE_P (TREE_TYPE (nn))
- || TREE_TYPE (nn) == string_ptr_type_node))
- DECL_INITIAL (nn) = TREE_OPERAND (node, 1);
-
- CAN_COMPLETE_NORMALLY (node) = 1;
- return node;
-
- case MULT_EXPR:
- case PLUS_EXPR:
- case MINUS_EXPR:
- case LSHIFT_EXPR:
- case RSHIFT_EXPR:
- case URSHIFT_EXPR:
- case BIT_AND_EXPR:
- case BIT_XOR_EXPR:
- case BIT_IOR_EXPR:
- case TRUNC_MOD_EXPR:
- case TRUNC_DIV_EXPR:
- case RDIV_EXPR:
- case TRUTH_ANDIF_EXPR:
- case TRUTH_ORIF_EXPR:
- case EQ_EXPR:
- case NE_EXPR:
- case GT_EXPR:
- case GE_EXPR:
- case LT_EXPR:
- case LE_EXPR:
- /* Operands 0 and 1 are WFL in certain cases only. patch_binop
- knows how to handle those cases. */
- wfl_op1 = TREE_OPERAND (node, 0);
- wfl_op2 = TREE_OPERAND (node, 1);
-
- CAN_COMPLETE_NORMALLY (node) = 1;
- /* Don't complete string nodes if dealing with the PLUS operand. */
- if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op1))
- {
- nn = java_complete_tree (wfl_op1);
- if (nn == error_mark_node)
- return error_mark_node;
-
- TREE_OPERAND (node, 0) = nn;
- }
- if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op2))
- {
- nn = java_complete_tree (wfl_op2);
- if (nn == error_mark_node)
- return error_mark_node;
-
- TREE_OPERAND (node, 1) = nn;
- }
- return force_evaluation_order (patch_binop (node, wfl_op1, wfl_op2));
-
- case INSTANCEOF_EXPR:
- wfl_op1 = TREE_OPERAND (node, 0);
- COMPLETE_CHECK_OP_0 (node);
- if (flag_emit_xref)
- {
- TREE_TYPE (node) = boolean_type_node;
- return node;
- }
- return patch_binop (node, wfl_op1, TREE_OPERAND (node, 1));
-
- case UNARY_PLUS_EXPR:
- case NEGATE_EXPR:
- case TRUTH_NOT_EXPR:
- case BIT_NOT_EXPR:
- case PREDECREMENT_EXPR:
- case PREINCREMENT_EXPR:
- case POSTDECREMENT_EXPR:
- case POSTINCREMENT_EXPR:
- case CONVERT_EXPR:
- /* There are cases were wfl_op1 is a WFL. patch_unaryop knows
- how to handle those cases. */
- wfl_op1 = TREE_OPERAND (node, 0);
- CAN_COMPLETE_NORMALLY (node) = 1;
- TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1);
- if (TREE_OPERAND (node, 0) == error_mark_node)
- return error_mark_node;
- node = patch_unaryop (node, wfl_op1);
- CAN_COMPLETE_NORMALLY (node) = 1;
- break;
-
- case ARRAY_REF:
- /* There are cases were wfl_op1 is a WFL. patch_array_ref knows
- how to handle those cases. */
- wfl_op1 = TREE_OPERAND (node, 0);
- TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1);
- if (TREE_OPERAND (node, 0) == error_mark_node)
- return error_mark_node;
- if (!flag_emit_class_files && !flag_emit_xref)
- TREE_OPERAND (node, 0) = save_expr (TREE_OPERAND (node, 0));
- /* The same applies to wfl_op2 */
- wfl_op2 = TREE_OPERAND (node, 1);
- TREE_OPERAND (node, 1) = java_complete_tree (wfl_op2);
- if (TREE_OPERAND (node, 1) == error_mark_node)
- return error_mark_node;
- if (!flag_emit_class_files && !flag_emit_xref)
- TREE_OPERAND (node, 1) = save_expr (TREE_OPERAND (node, 1));
- return patch_array_ref (node);
-
- case RECORD_TYPE:
- return node;;
-
- case COMPONENT_REF:
- /* The first step in the re-write of qualified name handling. FIXME.
- So far, this is only to support PRIMTYPE.class -> PRIMCLASS.TYPE. */
- TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
- if (TREE_CODE (TREE_OPERAND (node, 0)) == RECORD_TYPE)
- {
- tree name = TREE_OPERAND (node, 1);
- tree field = lookup_field_wrapper (TREE_OPERAND (node, 0), name);
- if (field == NULL_TREE)
- {
- error ("missing static field `%s'", IDENTIFIER_POINTER (name));
- return error_mark_node;
- }
- if (! FIELD_STATIC (field))
- {
- error ("not a static field `%s'", IDENTIFIER_POINTER (name));
- return error_mark_node;
- }
- return field;
- }
- else
- abort ();
- break;
-
- case THIS_EXPR:
- /* Can't use THIS in a static environment */
- if (!current_this)
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
- parse_error_context (wfl_operator,
- "Keyword `this' used outside allowed context");
- TREE_TYPE (node) = error_mark_node;
- return error_mark_node;
- }
- if (ctxp->explicit_constructor_p)
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
- parse_error_context
- (wfl_operator, "Can't reference `this' or `super' before the superclass constructor has been called");
- TREE_TYPE (node) = error_mark_node;
- return error_mark_node;
- }
- return current_this;
-
- case CLASS_LITERAL:
- CAN_COMPLETE_NORMALLY (node) = 1;
- node = patch_incomplete_class_ref (node);
- if (node == error_mark_node)
- return error_mark_node;
- break;
-
- default:
- CAN_COMPLETE_NORMALLY (node) = 1;
- /* Ok: may be we have a STRING_CST or a crafted `StringBuffer'
- and it's time to turn it into the appropriate String object */
- if ((nn = patch_string (node)))
- node = nn;
- else
- internal_error ("No case for %s", tree_code_name [TREE_CODE (node)]);
- }
- return node;
-}
-
-/* Complete function call's argument. Return a non zero value is an
- error was found. */
-
-static int
-complete_function_arguments (node)
- tree node;
-{
- int flag = 0;
- tree cn;
-
- ctxp->explicit_constructor_p += (CALL_EXPLICIT_CONSTRUCTOR_P (node) ? 1 : 0);
- for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn))
- {
- tree wfl = TREE_VALUE (cn), parm, temp;
- parm = java_complete_tree (wfl);
-
- if (parm == error_mark_node)
- {
- flag = 1;
- continue;
- }
- /* If have a string literal that we haven't transformed yet or a
- crafted string buffer, as a result of use of the the String
- `+' operator. Build `parm.toString()' and expand it. */
- if ((temp = patch_string (parm)))
- parm = temp;
-
- TREE_VALUE (cn) = parm;
- }
- ctxp->explicit_constructor_p -= (CALL_EXPLICIT_CONSTRUCTOR_P (node) ? 1 : 0);
- return flag;
-}
-
-/* Sometimes (for loops and variable initialized during their
- declaration), we want to wrap a statement around a WFL and turn it
- debugable. */
-
-static tree
-build_debugable_stmt (location, stmt)
- int location;
- tree stmt;
-{
- if (TREE_CODE (stmt) != EXPR_WITH_FILE_LOCATION)
- {
- stmt = build_expr_wfl (stmt, input_filename, 0, 0);
- EXPR_WFL_LINECOL (stmt) = location;
- }
- JAVA_MAYBE_GENERATE_DEBUG_INFO (stmt);
- return stmt;
-}
-
-static tree
-build_expr_block (body, decls)
- tree body, decls;
-{
- tree node = make_node (BLOCK);
- BLOCK_EXPR_DECLS (node) = decls;
- BLOCK_EXPR_BODY (node) = body;
- if (body)
- TREE_TYPE (node) = TREE_TYPE (body);
- TREE_SIDE_EFFECTS (node) = 1;
- return node;
-}
-
-/* Create a new function block and link it appropriately to current
- function block chain */
-
-static tree
-enter_block ()
-{
- tree b = build_expr_block (NULL_TREE, NULL_TREE);
-
- /* Link block B supercontext to the previous block. The current
- function DECL is used as supercontext when enter_a_block is called
- for the first time for a given function. The current function body
- (DECL_FUNCTION_BODY) is set to be block B. */
-
- tree fndecl = current_function_decl;
-
- if (!fndecl) {
- BLOCK_SUPERCONTEXT (b) = current_static_block;
- current_static_block = b;
- }
-
- else if (!DECL_FUNCTION_BODY (fndecl))
- {
- BLOCK_SUPERCONTEXT (b) = fndecl;
- DECL_FUNCTION_BODY (fndecl) = b;
- }
- else
- {
- BLOCK_SUPERCONTEXT (b) = DECL_FUNCTION_BODY (fndecl);
- DECL_FUNCTION_BODY (fndecl) = b;
- }
- return b;
-}
-
-/* Exit a block by changing the current function body
- (DECL_FUNCTION_BODY) to the current block super context, only if
- the block being exited isn't the method's top level one. */
-
-static tree
-exit_block ()
-{
- tree b;
- if (current_function_decl)
- {
- b = DECL_FUNCTION_BODY (current_function_decl);
- if (BLOCK_SUPERCONTEXT (b) != current_function_decl)
- DECL_FUNCTION_BODY (current_function_decl) = BLOCK_SUPERCONTEXT (b);
- }
- else
- {
- b = current_static_block;
-
- if (BLOCK_SUPERCONTEXT (b))
- current_static_block = BLOCK_SUPERCONTEXT (b);
- }
- return b;
-}
-
-/* Lookup for NAME in the nested function's blocks, all the way up to
- the current toplevel one. It complies with Java's local variable
- scoping rules. */
-
-static tree
-lookup_name_in_blocks (name)
- tree name;
-{
- tree b = GET_CURRENT_BLOCK (current_function_decl);
-
- while (b != current_function_decl)
- {
- tree current;
-
- /* Paranoid sanity check. To be removed */
- if (TREE_CODE (b) != BLOCK)
- abort ();
-
- for (current = BLOCK_EXPR_DECLS (b); current;
- current = TREE_CHAIN (current))
- if (DECL_NAME (current) == name)
- return current;
- b = BLOCK_SUPERCONTEXT (b);
- }
- return NULL_TREE;
-}
-
-static void
-maybe_absorb_scoping_blocks ()
-{
- while (BLOCK_IS_IMPLICIT (GET_CURRENT_BLOCK (current_function_decl)))
- {
- tree b = exit_block ();
- java_method_add_stmt (current_function_decl, b);
- SOURCE_FRONTEND_DEBUG (("Absorbing scoping block at line %d", lineno));
- }
-}
-
-\f
-/* This section of the source is reserved to build_* functions that
- are building incomplete tree nodes and the patch_* functions that
- are completing them. */
-
-/* Wrap a non WFL node around a WFL. */
-
-static tree
-build_wfl_wrap (node, location)
- tree node;
- int location;
-{
- tree wfl, node_to_insert = node;
-
- /* We want to process THIS . xxx symbolicaly, to keep it consistent
- with the way we're processing SUPER. A THIS from a primary as a
- different form than a SUPER. Turn THIS into something symbolic */
- if (TREE_CODE (node) == THIS_EXPR)
- node_to_insert = wfl = build_wfl_node (this_identifier_node);
- else
- wfl = build_expr_wfl (NULL_TREE, ctxp->filename, 0, 0);
-
- EXPR_WFL_LINECOL (wfl) = location;
- EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (node_to_insert, NULL_TREE);
- return wfl;
-}
-
-/* Build a super() constructor invocation. Returns empty_stmt_node if
- we're currently dealing with the class java.lang.Object. */
-
-static tree
-build_super_invocation (mdecl)
- tree mdecl;
-{
- if (DECL_CONTEXT (mdecl) == object_type_node)
- return empty_stmt_node;
- else
- {
- tree super_wfl = build_wfl_node (super_identifier_node);
- tree a = NULL_TREE, t;
- /* If we're dealing with an anonymous class, pass the arguments
- of the crafted constructor along. */
- if (ANONYMOUS_CLASS_P (DECL_CONTEXT (mdecl)))
- {
- SKIP_THIS_AND_ARTIFICIAL_PARMS (t, mdecl);
- for (; t != end_params_node; t = TREE_CHAIN (t))
- a = tree_cons (NULL_TREE, build_wfl_node (TREE_PURPOSE (t)), a);
- }
- return build_method_invocation (super_wfl, a);
- }
-}
-
-/* Build a SUPER/THIS qualified method invocation. */
-
-static tree
-build_this_super_qualified_invocation (use_this, name, args, lloc, rloc)
- int use_this;
- tree name, args;
- int lloc, rloc;
-{
- tree invok;
- tree wfl =
- build_wfl_node (use_this ? this_identifier_node : super_identifier_node);
- EXPR_WFL_LINECOL (wfl) = lloc;
- invok = build_method_invocation (name, args);
- return make_qualified_primary (wfl, invok, rloc);
-}
-
-/* Build an incomplete CALL_EXPR node. */
-
-static tree
-build_method_invocation (name, args)
- tree name;
- tree args;
-{
- tree call = build (CALL_EXPR, NULL_TREE, name, args, NULL_TREE);
- TREE_SIDE_EFFECTS (call) = 1;
- EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name);
- return call;
-}
-
-/* Build an incomplete new xxx(...) node. */
-
-static tree
-build_new_invocation (name, args)
- tree name, args;
-{
- tree call = build (NEW_CLASS_EXPR, NULL_TREE, name, args, NULL_TREE);
- TREE_SIDE_EFFECTS (call) = 1;
- EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name);
- return call;
-}
-
-/* Build an incomplete assignment expression. */
-
-static tree
-build_assignment (op, op_location, lhs, rhs)
- int op, op_location;
- tree lhs, rhs;
-{
- tree assignment;
- /* Build the corresponding binop if we deal with a Compound
- Assignment operator. Mark the binop sub-tree as part of a
- Compound Assignment expression */
- if (op != ASSIGN_TK)
- {
- rhs = build_binop (BINOP_LOOKUP (op), op_location, lhs, rhs);
- COMPOUND_ASSIGN_P (rhs) = 1;
- }
- assignment = build (MODIFY_EXPR, NULL_TREE, lhs, rhs);
- TREE_SIDE_EFFECTS (assignment) = 1;
- EXPR_WFL_LINECOL (assignment) = op_location;
- return assignment;
-}
-
-/* Print an INTEGER_CST node in a static buffer, and return the buffer. */
-
-char *
-print_int_node (node)
- tree node;
-{
- static char buffer [80];
- if (TREE_CONSTANT_OVERFLOW (node))
- sprintf (buffer, "<overflow>");
-
- if (TREE_INT_CST_HIGH (node) == 0)
- sprintf (buffer, HOST_WIDE_INT_PRINT_UNSIGNED,
- TREE_INT_CST_LOW (node));
- else if (TREE_INT_CST_HIGH (node) == -1
- && TREE_INT_CST_LOW (node) != 0)
- {
- buffer [0] = '-';
- sprintf (&buffer [1], HOST_WIDE_INT_PRINT_UNSIGNED,
- -TREE_INT_CST_LOW (node));
- }
- else
- sprintf (buffer, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
- TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
-
- return buffer;
-}
-
-\f
-/* Return 1 if an assignment to a FINAL is attempted in a non suitable
- context. */
-
-/* 15.25 Assignment operators. */
-
-static tree
-patch_assignment (node, wfl_op1)
- tree node;
- tree wfl_op1;
-{
- tree rhs = TREE_OPERAND (node, 1);
- tree lvalue = TREE_OPERAND (node, 0), llvalue;
- tree lhs_type = NULL_TREE, rhs_type, new_rhs = NULL_TREE;
- int error_found = 0;
- int lvalue_from_array = 0;
- int is_return = 0;
-
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- /* Lhs can be a named variable */
- if (JDECL_P (lvalue))
- {
- lhs_type = TREE_TYPE (lvalue);
- }
- /* Or Lhs can be an array access. */
- else if (TREE_CODE (lvalue) == ARRAY_REF)
- {
- lhs_type = TREE_TYPE (lvalue);
- lvalue_from_array = 1;
- }
- /* Or a field access */
- else if (TREE_CODE (lvalue) == COMPONENT_REF)
- lhs_type = TREE_TYPE (lvalue);
- /* Or a function return slot */
- else if (TREE_CODE (lvalue) == RESULT_DECL)
- {
- /* If the return type is an integral type, then we create the
- RESULT_DECL with a promoted type, but we need to do these
- checks against the unpromoted type to ensure type safety. So
- here we look at the real type, not the type of the decl we
- are modifying. */
- lhs_type = TREE_TYPE (TREE_TYPE (current_function_decl));
- is_return = 1;
- }
- /* Otherwise, we might want to try to write into an optimized static
- final, this is an of a different nature, reported further on. */
- else if (TREE_CODE (wfl_op1) == EXPR_WITH_FILE_LOCATION
- && resolve_expression_name (wfl_op1, &llvalue))
- {
- lhs_type = TREE_TYPE (lvalue);
- }
- else
- {
- parse_error_context (wfl_op1, "Invalid left hand side of assignment");
- error_found = 1;
- }
-
- rhs_type = TREE_TYPE (rhs);
-
- /* 5.1 Try the assignment conversion for builtin type. */
- new_rhs = try_builtin_assignconv (wfl_op1, lhs_type, rhs);
-
- /* 5.2 If it failed, try a reference conversion */
- if (!new_rhs && (new_rhs = try_reference_assignconv (lhs_type, rhs)))
- lhs_type = promote_type (rhs_type);
-
- /* 15.25.2 If we have a compound assignment, convert RHS into the
- type of the LHS */
- else if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1)))
- new_rhs = convert (lhs_type, rhs);
-
- /* Explicit cast required. This is an error */
- if (!new_rhs)
- {
- char *t1 = xstrdup (lang_printable_name (TREE_TYPE (rhs), 0));
- char *t2 = xstrdup (lang_printable_name (lhs_type, 0));
- tree wfl;
- char operation [32]; /* Max size known */
-
- /* If the assignment is part of a declaration, we use the WFL of
- the declared variable to point out the error and call it a
- declaration problem. If the assignment is a genuine =
- operator, we call is a operator `=' problem, otherwise we
- call it an assignment problem. In both of these last cases,
- we use the WFL of the operator to indicate the error. */
-
- if (MODIFY_EXPR_FROM_INITIALIZATION_P (node))
- {
- wfl = wfl_op1;
- strcpy (operation, "declaration");
- }
- else
- {
- wfl = wfl_operator;
- if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1)))
- strcpy (operation, "assignment");
- else if (is_return)
- strcpy (operation, "`return'");
- else
- strcpy (operation, "`='");
- }
-
- if (!valid_cast_to_p (rhs_type, lhs_type))
- parse_error_context
- (wfl, "Incompatible type for %s. Can't convert `%s' to `%s'",
- operation, t1, t2);
- else
- parse_error_context (wfl, "Incompatible type for %s. Explicit cast needed to convert `%s' to `%s'",
- operation, t1, t2);
- free (t1); free (t2);
- error_found = 1;
- }
-
- if (error_found)
- return error_mark_node;
-
- /* If we're processing a `return' statement, promote the actual type
- to the promoted type. */
- if (is_return)
- new_rhs = convert (TREE_TYPE (lvalue), new_rhs);
-
- /* 10.10: Array Store Exception runtime check */
- if (!flag_emit_class_files
- && !flag_emit_xref
- && lvalue_from_array
- && JREFERENCE_TYPE_P (TYPE_ARRAY_ELEMENT (lhs_type)))
- {
- tree array, store_check, base, index_expr;
-
- /* Save RHS so that it doesn't get re-evaluated by the store check. */
- new_rhs = save_expr (new_rhs);
-
- /* Get the INDIRECT_REF. */
- array = TREE_OPERAND (TREE_OPERAND (lvalue, 0), 0);
- /* Get the array pointer expr. */
- array = TREE_OPERAND (array, 0);
- store_check = build_java_arraystore_check (array, new_rhs);
-
- index_expr = TREE_OPERAND (lvalue, 1);
-
- if (TREE_CODE (index_expr) == COMPOUND_EXPR)
- {
- /* A COMPOUND_EXPR here is a bounds check. The bounds check must
- happen before the store check, so prepare to insert the store
- check within the second operand of the existing COMPOUND_EXPR. */
- base = index_expr;
- }
- else
- base = lvalue;
-
- index_expr = TREE_OPERAND (base, 1);
- TREE_OPERAND (base, 1) = build (COMPOUND_EXPR, TREE_TYPE (index_expr),
- store_check, index_expr);
- }
-
- /* Final locals can be used as case values in switch
- statement. Prepare them for this eventuality. */
- if (TREE_CODE (lvalue) == VAR_DECL
- && DECL_FINAL (lvalue)
- && TREE_CONSTANT (new_rhs)
- && IDENTIFIER_LOCAL_VALUE (DECL_NAME (lvalue))
- && JINTEGRAL_TYPE_P (TREE_TYPE (lvalue))
- )
- {
- TREE_CONSTANT (lvalue) = 1;
- DECL_INITIAL (lvalue) = new_rhs;
- }
-
- TREE_OPERAND (node, 0) = lvalue;
- TREE_OPERAND (node, 1) = new_rhs;
- TREE_TYPE (node) = lhs_type;
- return node;
-}
-
-/* Check that type SOURCE can be cast into type DEST. If the cast
- can't occur at all, return NULL; otherwise, return a possibly
- modified rhs. */
-
-static tree
-try_reference_assignconv (lhs_type, rhs)
- tree lhs_type, rhs;
-{
- tree new_rhs = NULL_TREE;
- tree rhs_type = TREE_TYPE (rhs);
-
- if (!JPRIMITIVE_TYPE_P (rhs_type) && JREFERENCE_TYPE_P (lhs_type))
- {
- /* `null' may be assigned to any reference type */
- if (rhs == null_pointer_node)
- new_rhs = null_pointer_node;
- /* Try the reference assignment conversion */
- else if (valid_ref_assignconv_cast_p (rhs_type, lhs_type, 0))
- new_rhs = rhs;
- /* This is a magic assignment that we process differently */
- else if (TREE_CODE (rhs) == JAVA_EXC_OBJ_EXPR)
- new_rhs = rhs;
- }
- return new_rhs;
-}
-
-/* Check that RHS can be converted into LHS_TYPE by the assignment
- conversion (5.2), for the cases of RHS being a builtin type. Return
- NULL_TREE if the conversion fails or if because RHS isn't of a
- builtin type. Return a converted RHS if the conversion is possible. */
-
-static tree
-try_builtin_assignconv (wfl_op1, lhs_type, rhs)
- tree wfl_op1, lhs_type, rhs;
-{
- tree new_rhs = NULL_TREE;
- tree rhs_type = TREE_TYPE (rhs);
-
- /* Handle boolean specially. */
- if (TREE_CODE (rhs_type) == BOOLEAN_TYPE
- || TREE_CODE (lhs_type) == BOOLEAN_TYPE)
- {
- if (TREE_CODE (rhs_type) == BOOLEAN_TYPE
- && TREE_CODE (lhs_type) == BOOLEAN_TYPE)
- new_rhs = rhs;
- }
-
- /* 5.1.1 Try Identity Conversion,
- 5.1.2 Try Widening Primitive Conversion */
- else if (valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type))
- new_rhs = convert (lhs_type, rhs);
-
- /* Try a narrowing primitive conversion (5.1.3):
- - expression is a constant expression of type int AND
- - variable is byte, short or char AND
- - The value of the expression is representable in the type of the
- variable */
- else if (rhs_type == int_type_node && TREE_CONSTANT (rhs)
- && (lhs_type == byte_type_node || lhs_type == char_type_node
- || lhs_type == short_type_node))
- {
- if (int_fits_type_p (rhs, lhs_type))
- new_rhs = convert (lhs_type, rhs);
- else if (wfl_op1) /* Might be called with a NULL */
- parse_warning_context
- (wfl_op1, "Constant expression `%s' too wide for narrowing primitive conversion to `%s'",
- print_int_node (rhs), lang_printable_name (lhs_type, 0));
- /* Reported a warning that will turn into an error further
- down, so we don't return */
- }
-
- return new_rhs;
-}
-
-/* Return 1 if RHS_TYPE can be converted to LHS_TYPE by identity
- conversion (5.1.1) or widening primitive conversion (5.1.2). Return
- 0 is the conversion test fails. This implements parts the method
- invocation convertion (5.3). */
-
-static int
-valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type)
- tree lhs_type, rhs_type;
-{
- /* 5.1.1: This is the identity conversion part. */
- if (lhs_type == rhs_type)
- return 1;
-
- /* Reject non primitive types and boolean conversions. */
- if (!JNUMERIC_TYPE_P (lhs_type) || !JNUMERIC_TYPE_P (rhs_type))
- return 0;
-
- /* 5.1.2: widening primitive conversion. byte, even if it's smaller
- than a char can't be converted into a char. Short can't too, but
- the < test below takes care of that */
- if (lhs_type == char_type_node && rhs_type == byte_type_node)
- return 0;
-
- /* Accept all promoted type here. Note, we can't use <= in the test
- below, because we still need to bounce out assignments of short
- to char and the likes */
- if (lhs_type == int_type_node
- && (rhs_type == promoted_byte_type_node
- || rhs_type == promoted_short_type_node
- || rhs_type == promoted_char_type_node
- || rhs_type == promoted_boolean_type_node))
- return 1;
-
- /* From here, an integral is widened if its precision is smaller
- than the precision of the LHS or if the LHS is a floating point
- type, or the RHS is a float and the RHS a double. */
- if ((JINTEGRAL_TYPE_P (rhs_type) && JINTEGRAL_TYPE_P (lhs_type)
- && (TYPE_PRECISION (rhs_type) < TYPE_PRECISION (lhs_type)))
- || (JINTEGRAL_TYPE_P (rhs_type) && JFLOAT_TYPE_P (lhs_type))
- || (rhs_type == float_type_node && lhs_type == double_type_node))
- return 1;
-
- return 0;
-}
-
-/* Check that something of SOURCE type can be assigned or cast to
- something of DEST type at runtime. Return 1 if the operation is
- valid, 0 otherwise. If CAST is set to 1, we're treating the case
- were SOURCE is cast into DEST, which borrows a lot of the
- assignment check. */
-
-static int
-valid_ref_assignconv_cast_p (source, dest, cast)
- tree source;
- tree dest;
- int cast;
-{
- /* SOURCE or DEST might be null if not from a declared entity. */
- if (!source || !dest)
- return 0;
- if (JNULLP_TYPE_P (source))
- return 1;
- if (TREE_CODE (source) == POINTER_TYPE)
- source = TREE_TYPE (source);
- if (TREE_CODE (dest) == POINTER_TYPE)
- dest = TREE_TYPE (dest);
-
- /* If source and dest are being compiled from bytecode, they may need to
- be loaded. */
- if (CLASS_P (source) && !CLASS_LOADED_P (source))
- {
- load_class (source, 1);
- safe_layout_class (source);
- }
- if (CLASS_P (dest) && !CLASS_LOADED_P (dest))
- {
- load_class (dest, 1);
- safe_layout_class (dest);
- }
-
- /* Case where SOURCE is a class type */
- if (TYPE_CLASS_P (source))
- {
- if (TYPE_CLASS_P (dest))
- return (source == dest
- || inherits_from_p (source, dest)
- || (cast && inherits_from_p (dest, source)));
- if (TYPE_INTERFACE_P (dest))
- {
- /* If doing a cast and SOURCE is final, the operation is
- always correct a compile time (because even if SOURCE
- does not implement DEST, a subclass of SOURCE might). */
- if (cast && !CLASS_FINAL (TYPE_NAME (source)))
- return 1;
- /* Otherwise, SOURCE must implement DEST */
- return interface_of_p (dest, source);
- }
- /* DEST is an array, cast permited if SOURCE is of Object type */
- return (cast && source == object_type_node ? 1 : 0);
- }
- if (TYPE_INTERFACE_P (source))
- {
- if (TYPE_CLASS_P (dest))
- {
- /* If not casting, DEST must be the Object type */
- if (!cast)
- return dest == object_type_node;
- /* We're doing a cast. The cast is always valid is class
- DEST is not final, otherwise, DEST must implement SOURCE */
- else if (!CLASS_FINAL (TYPE_NAME (dest)))
- return 1;
- else
- return interface_of_p (source, dest);
- }
- if (TYPE_INTERFACE_P (dest))
- {
- /* If doing a cast, then if SOURCE and DEST contain method
- with the same signature but different return type, then
- this is a (compile time) error */
- if (cast)
- {
- tree method_source, method_dest;
- tree source_type;
- tree source_sig;
- tree source_name;
- for (method_source = TYPE_METHODS (source); method_source;
- method_source = TREE_CHAIN (method_source))
- {
- source_sig =
- build_java_argument_signature (TREE_TYPE (method_source));
- source_type = TREE_TYPE (TREE_TYPE (method_source));
- source_name = DECL_NAME (method_source);
- for (method_dest = TYPE_METHODS (dest);
- method_dest; method_dest = TREE_CHAIN (method_dest))
- if (source_sig ==
- build_java_argument_signature (TREE_TYPE (method_dest))
- && source_name == DECL_NAME (method_dest)
- && source_type != TREE_TYPE (TREE_TYPE (method_dest)))
- return 0;
- }
- return 1;
- }
- else
- return source == dest || interface_of_p (dest, source);
- }
- else
- {
- /* Array */
- return (cast
- && (DECL_NAME (TYPE_NAME (source)) == java_lang_cloneable
- || (DECL_NAME (TYPE_NAME (source))
- == java_io_serializable)));
- }
- }
- if (TYPE_ARRAY_P (source))
- {
- if (TYPE_CLASS_P (dest))
- return dest == object_type_node;
- /* Can't cast an array to an interface unless the interface is
- java.lang.Cloneable or java.io.Serializable. */
- if (TYPE_INTERFACE_P (dest))
- return (DECL_NAME (TYPE_NAME (dest)) == java_lang_cloneable
- || DECL_NAME (TYPE_NAME (dest)) == java_io_serializable);
- else /* Arrays */
- {
- tree source_element_type = TYPE_ARRAY_ELEMENT (source);
- tree dest_element_type = TYPE_ARRAY_ELEMENT (dest);
-
- /* In case of severe errors, they turn out null */
- if (!dest_element_type || !source_element_type)
- return 0;
- if (source_element_type == dest_element_type)
- return 1;
- return valid_ref_assignconv_cast_p (source_element_type,
- dest_element_type, cast);
- }
- return 0;
- }
- return 0;
-}
-
-static int
-valid_cast_to_p (source, dest)
- tree source;
- tree dest;
-{
- if (TREE_CODE (source) == POINTER_TYPE)
- source = TREE_TYPE (source);
- if (TREE_CODE (dest) == POINTER_TYPE)
- dest = TREE_TYPE (dest);
-
- if (TREE_CODE (source) == RECORD_TYPE && TREE_CODE (dest) == RECORD_TYPE)
- return valid_ref_assignconv_cast_p (source, dest, 1);
-
- else if (JNUMERIC_TYPE_P (source) && JNUMERIC_TYPE_P (dest))
- return 1;
-
- else if (TREE_CODE (source) == BOOLEAN_TYPE
- && TREE_CODE (dest) == BOOLEAN_TYPE)
- return 1;
-
- return 0;
-}
-
-static tree
-do_unary_numeric_promotion (arg)
- tree arg;
-{
- tree type = TREE_TYPE (arg);
- if ((TREE_CODE (type) == INTEGER_TYPE && TYPE_PRECISION (type) < 32)
- || TREE_CODE (type) == CHAR_TYPE)
- arg = convert (int_type_node, arg);
- return arg;
-}
-
-/* Return a non zero value if SOURCE can be converted into DEST using
- the method invocation conversion rule (5.3). */
-static int
-valid_method_invocation_conversion_p (dest, source)
- tree dest, source;
-{
- return ((JPRIMITIVE_TYPE_P (source) && JPRIMITIVE_TYPE_P (dest)
- && valid_builtin_assignconv_identity_widening_p (dest, source))
- || ((JREFERENCE_TYPE_P (source) || JNULLP_TYPE_P (source))
- && (JREFERENCE_TYPE_P (dest) || JNULLP_TYPE_P (dest))
- && valid_ref_assignconv_cast_p (source, dest, 0)));
-}
-
-/* Build an incomplete binop expression. */
-
-static tree
-build_binop (op, op_location, op1, op2)
- enum tree_code op;
- int op_location;
- tree op1, op2;
-{
- tree binop = build (op, NULL_TREE, op1, op2);
- TREE_SIDE_EFFECTS (binop) = 1;
- /* Store the location of the operator, for better error report. The
- string of the operator will be rebuild based on the OP value. */
- EXPR_WFL_LINECOL (binop) = op_location;
- return binop;
-}
-
-/* Build the string of the operator retained by NODE. If NODE is part
- of a compound expression, add an '=' at the end of the string. This
- function is called when an error needs to be reported on an
- operator. The string is returned as a pointer to a static character
- buffer. */
-
-static char *
-operator_string (node)
- tree node;
-{
-#define BUILD_OPERATOR_STRING(S) \
- { \
- sprintf (buffer, "%s%s", S, (COMPOUND_ASSIGN_P (node) ? "=" : "")); \
- return buffer; \
- }
-
- static char buffer [10];
- switch (TREE_CODE (node))
- {
- case MULT_EXPR: BUILD_OPERATOR_STRING ("*");
- case RDIV_EXPR: BUILD_OPERATOR_STRING ("/");
- case TRUNC_MOD_EXPR: BUILD_OPERATOR_STRING ("%");
- case PLUS_EXPR: BUILD_OPERATOR_STRING ("+");
- case MINUS_EXPR: BUILD_OPERATOR_STRING ("-");
- case LSHIFT_EXPR: BUILD_OPERATOR_STRING ("<<");
- case RSHIFT_EXPR: BUILD_OPERATOR_STRING (">>");
- case URSHIFT_EXPR: BUILD_OPERATOR_STRING (">>>");
- case BIT_AND_EXPR: BUILD_OPERATOR_STRING ("&");
- case BIT_XOR_EXPR: BUILD_OPERATOR_STRING ("^");
- case BIT_IOR_EXPR: BUILD_OPERATOR_STRING ("|");
- case TRUTH_ANDIF_EXPR: BUILD_OPERATOR_STRING ("&&");
- case TRUTH_ORIF_EXPR: BUILD_OPERATOR_STRING ("||");
- case EQ_EXPR: BUILD_OPERATOR_STRING ("==");
- case NE_EXPR: BUILD_OPERATOR_STRING ("!=");
- case GT_EXPR: BUILD_OPERATOR_STRING (">");
- case GE_EXPR: BUILD_OPERATOR_STRING (">=");
- case LT_EXPR: BUILD_OPERATOR_STRING ("<");
- case LE_EXPR: BUILD_OPERATOR_STRING ("<=");
- case UNARY_PLUS_EXPR: BUILD_OPERATOR_STRING ("+");
- case NEGATE_EXPR: BUILD_OPERATOR_STRING ("-");
- case TRUTH_NOT_EXPR: BUILD_OPERATOR_STRING ("!");
- case BIT_NOT_EXPR: BUILD_OPERATOR_STRING ("~");
- case PREINCREMENT_EXPR: /* Fall through */
- case POSTINCREMENT_EXPR: BUILD_OPERATOR_STRING ("++");
- case PREDECREMENT_EXPR: /* Fall through */
- case POSTDECREMENT_EXPR: BUILD_OPERATOR_STRING ("--");
- default:
- internal_error ("unregistered operator %s",
- tree_code_name [TREE_CODE (node)]);
- }
- return NULL;
-#undef BUILD_OPERATOR_STRING
-}
-
-/* Return 1 if VAR_ACCESS1 is equivalent to VAR_ACCESS2. */
-
-static int
-java_decl_equiv (var_acc1, var_acc2)
- tree var_acc1, var_acc2;
-{
- if (JDECL_P (var_acc1))
- return (var_acc1 == var_acc2);
-
- return (TREE_CODE (var_acc1) == COMPONENT_REF
- && TREE_CODE (var_acc2) == COMPONENT_REF
- && TREE_OPERAND (TREE_OPERAND (var_acc1, 0), 0)
- == TREE_OPERAND (TREE_OPERAND (var_acc2, 0), 0)
- && TREE_OPERAND (var_acc1, 1) == TREE_OPERAND (var_acc2, 1));
-}
-
-/* Return a non zero value if CODE is one of the operators that can be
- used in conjunction with the `=' operator in a compound assignment. */
-
-static int
-binop_compound_p (code)
- enum tree_code code;
-{
- int i;
- for (i = 0; i < BINOP_COMPOUND_CANDIDATES; i++)
- if (binop_lookup [i] == code)
- break;
-
- return i < BINOP_COMPOUND_CANDIDATES;
-}
-
-/* Reorganize after a fold to get SAVE_EXPR to generate what we want. */
-
-static tree
-java_refold (t)
- tree t;
-{
- tree c, b, ns, decl;
-
- if (TREE_CODE (t) != MODIFY_EXPR)
- return t;
-
- c = TREE_OPERAND (t, 1);
- if (! (c && TREE_CODE (c) == COMPOUND_EXPR
- && TREE_CODE (TREE_OPERAND (c, 0)) == MODIFY_EXPR
- && binop_compound_p (TREE_CODE (TREE_OPERAND (c, 1)))))
- return t;
-
- /* Now the left branch of the binary operator. */
- b = TREE_OPERAND (TREE_OPERAND (c, 1), 0);
- if (! (b && TREE_CODE (b) == NOP_EXPR
- && TREE_CODE (TREE_OPERAND (b, 0)) == SAVE_EXPR))
- return t;
-
- ns = TREE_OPERAND (TREE_OPERAND (b, 0), 0);
- if (! (ns && TREE_CODE (ns) == NOP_EXPR
- && TREE_CODE (TREE_OPERAND (ns, 0)) == SAVE_EXPR))
- return t;
-
- decl = TREE_OPERAND (TREE_OPERAND (ns, 0), 0);
- if ((JDECL_P (decl) || TREE_CODE (decl) == COMPONENT_REF)
- /* It's got to be the an equivalent decl */
- && java_decl_equiv (decl, TREE_OPERAND (TREE_OPERAND (c, 0), 0)))
- {
- /* Shorten the NOP_EXPR/SAVE_EXPR path. */
- TREE_OPERAND (TREE_OPERAND (c, 1), 0) = TREE_OPERAND (ns, 0);
- /* Substitute the COMPOUND_EXPR by the BINOP_EXPR */
- TREE_OPERAND (t, 1) = TREE_OPERAND (c, 1);
- /* Change the right part of the BINOP_EXPR */
- TREE_OPERAND (TREE_OPERAND (t, 1), 1) = TREE_OPERAND (c, 0);
- }
-
- return t;
-}
-
-/* Binary operators (15.16 up to 15.18). We return error_mark_node on
- errors but we modify NODE so that it contains the type computed
- according to the expression, when it's fixed. Otherwise, we write
- error_mark_node as the type. It allows us to further the analysis
- of remaining nodes and detects more errors in certain cases. */
-
-static tree
-patch_binop (node, wfl_op1, wfl_op2)
- tree node;
- tree wfl_op1;
- tree wfl_op2;
-{
- tree op1 = TREE_OPERAND (node, 0);
- tree op2 = TREE_OPERAND (node, 1);
- tree op1_type = TREE_TYPE (op1);
- tree op2_type = TREE_TYPE (op2);
- tree prom_type = NULL_TREE, cn;
- enum tree_code code = TREE_CODE (node);
-
- /* If 1, tell the routine that we have to return error_mark_node
- after checking for the initialization of the RHS */
- int error_found = 0;
-
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- /* If either op<n>_type are NULL, this might be early signs of an
- error situation, unless it's too early to tell (in case we're
- handling a `+', `==', `!=' or `instanceof'.) We want to set op<n>_type
- correctly so the error can be later on reported accurately. */
- if (! (code == PLUS_EXPR || code == NE_EXPR
- || code == EQ_EXPR || code == INSTANCEOF_EXPR))
- {
- tree n;
- if (! op1_type)
- {
- n = java_complete_tree (op1);
- op1_type = TREE_TYPE (n);
- }
- if (! op2_type)
- {
- n = java_complete_tree (op2);
- op2_type = TREE_TYPE (n);
- }
- }
-
- switch (code)
- {
- /* 15.16 Multiplicative operators */
- case MULT_EXPR: /* 15.16.1 Multiplication Operator * */
- case RDIV_EXPR: /* 15.16.2 Division Operator / */
- case TRUNC_DIV_EXPR: /* 15.16.2 Integral type Division Operator / */
- case TRUNC_MOD_EXPR: /* 15.16.3 Remainder operator % */
- if (!JNUMERIC_TYPE_P (op1_type) || !JNUMERIC_TYPE_P (op2_type))
- {
- if (!JNUMERIC_TYPE_P (op1_type))
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
- if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- break;
- }
- prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
-
- /* Detect integral division by zero */
- if ((code == RDIV_EXPR || code == TRUNC_MOD_EXPR)
- && TREE_CODE (prom_type) == INTEGER_TYPE
- && (op2 == integer_zero_node || op2 == long_zero_node ||
- (TREE_CODE (op2) == INTEGER_CST &&
- ! TREE_INT_CST_LOW (op2) && ! TREE_INT_CST_HIGH (op2))))
- {
- parse_warning_context (wfl_operator, "Evaluating this expression will result in an arithmetic exception being thrown");
- TREE_CONSTANT (node) = 0;
- }
-
- /* Change the division operator if necessary */
- if (code == RDIV_EXPR && TREE_CODE (prom_type) == INTEGER_TYPE)
- TREE_SET_CODE (node, TRUNC_DIV_EXPR);
-
- /* Before divisions as is disapear, try to simplify and bail if
- applicable, otherwise we won't perform even simple
- simplifications like (1-1)/3. We can't do that with floating
- point number, folds can't handle them at this stage. */
- if (code == RDIV_EXPR && TREE_CONSTANT (op1) && TREE_CONSTANT (op2)
- && JINTEGRAL_TYPE_P (op1) && JINTEGRAL_TYPE_P (op2))
- {
- TREE_TYPE (node) = prom_type;
- node = fold (node);
- if (TREE_CODE (node) != code)
- return node;
- }
-
- if (TREE_CODE (prom_type) == INTEGER_TYPE
- && flag_use_divide_subroutine
- && ! flag_emit_class_files
- && (code == RDIV_EXPR || code == TRUNC_MOD_EXPR))
- return build_java_soft_divmod (TREE_CODE (node), prom_type, op1, op2);
-
- /* This one is more complicated. FLOATs are processed by a
- function call to soft_fmod. Duplicate the value of the
- COMPOUND_ASSIGN_P flag. */
- if (code == TRUNC_MOD_EXPR)
- {
- tree mod = build_java_binop (TRUNC_MOD_EXPR, prom_type, op1, op2);
- COMPOUND_ASSIGN_P (mod) = COMPOUND_ASSIGN_P (node);
- TREE_SIDE_EFFECTS (mod)
- = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
- return mod;
- }
- break;
-
- /* 15.17 Additive Operators */
- case PLUS_EXPR: /* 15.17.1 String Concatenation Operator + */
-
- /* Operation is valid if either one argument is a string
- constant, a String object or a StringBuffer crafted for the
- purpose of the a previous usage of the String concatenation
- operator */
-
- if (TREE_CODE (op1) == STRING_CST
- || TREE_CODE (op2) == STRING_CST
- || JSTRING_TYPE_P (op1_type)
- || JSTRING_TYPE_P (op2_type)
- || IS_CRAFTED_STRING_BUFFER_P (op1)
- || IS_CRAFTED_STRING_BUFFER_P (op2))
- return build_string_concatenation (op1, op2);
-
- case MINUS_EXPR: /* 15.17.2 Additive Operators (+ and -) for
- Numeric Types */
- if (!JNUMERIC_TYPE_P (op1_type) || !JNUMERIC_TYPE_P (op2_type))
- {
- if (!JNUMERIC_TYPE_P (op1_type))
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
- if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- break;
- }
- prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
- break;
-
- /* 15.18 Shift Operators */
- case LSHIFT_EXPR:
- case RSHIFT_EXPR:
- case URSHIFT_EXPR:
- if (!JINTEGRAL_TYPE_P (op1_type) || !JINTEGRAL_TYPE_P (op2_type))
- {
- if (!JINTEGRAL_TYPE_P (op1_type))
- ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type);
- else
- {
- if (JNUMERIC_TYPE_P (op2_type))
- parse_error_context (wfl_operator,
- "Incompatible type for `%s'. Explicit cast needed to convert shift distance from `%s' to integral",
- operator_string (node),
- lang_printable_name (op2_type, 0));
- else
- parse_error_context (wfl_operator,
- "Incompatible type for `%s'. Can't convert shift distance from `%s' to integral",
- operator_string (node),
- lang_printable_name (op2_type, 0));
- }
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- break;
- }
-
- /* Unary numeric promotion (5.6.1) is performed on each operand
- separately */
- op1 = do_unary_numeric_promotion (op1);
- op2 = do_unary_numeric_promotion (op2);
-
- /* The type of the shift expression is the type of the promoted
- type of the left-hand operand */
- prom_type = TREE_TYPE (op1);
-
- /* Shift int only up to 0x1f and long up to 0x3f */
- if (prom_type == int_type_node)
- op2 = fold (build (BIT_AND_EXPR, int_type_node, op2,
- build_int_2 (0x1f, 0)));
- else
- op2 = fold (build (BIT_AND_EXPR, int_type_node, op2,
- build_int_2 (0x3f, 0)));
-
- /* The >>> operator is a >> operating on unsigned quantities */
- if (code == URSHIFT_EXPR && ! flag_emit_class_files)
- {
- tree to_return;
- tree utype = unsigned_type (prom_type);
- op1 = convert (utype, op1);
- TREE_SET_CODE (node, RSHIFT_EXPR);
- TREE_OPERAND (node, 0) = op1;
- TREE_OPERAND (node, 1) = op2;
- TREE_TYPE (node) = utype;
- to_return = convert (prom_type, node);
- /* Copy the original value of the COMPOUND_ASSIGN_P flag */
- COMPOUND_ASSIGN_P (to_return) = COMPOUND_ASSIGN_P (node);
- TREE_SIDE_EFFECTS (to_return)
- = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
- return to_return;
- }
- break;
-
- /* 15.19.1 Type Comparison Operator instaceof */
- case INSTANCEOF_EXPR:
-
- TREE_TYPE (node) = boolean_type_node;
-
- if (!(op2_type = resolve_type_during_patch (op2)))
- return error_mark_node;
-
- /* The first operand must be a reference type or the null type */
- if (!JREFERENCE_TYPE_P (op1_type) && op1 != null_pointer_node)
- error_found = 1; /* Error reported further below */
-
- /* The second operand must be a reference type */
- if (!JREFERENCE_TYPE_P (op2_type))
- {
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op2);
- parse_error_context
- (wfl_operator, "Invalid argument `%s' for `instanceof'",
- lang_printable_name (op2_type, 0));
- error_found = 1;
- }
-
- if (!error_found && valid_ref_assignconv_cast_p (op1_type, op2_type, 1))
- {
- /* If the first operand is null, the result is always false */
- if (op1 == null_pointer_node)
- return boolean_false_node;
- else if (flag_emit_class_files)
- {
- TREE_OPERAND (node, 1) = op2_type;
- TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1);
- return node;
- }
- /* Otherwise we have to invoke instance of to figure it out */
- else
- return build_instanceof (op1, op2_type);
- }
- /* There is no way the expression operand can be an instance of
- the type operand. This is a compile time error. */
- else
- {
- char *t1 = xstrdup (lang_printable_name (op1_type, 0));
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
- parse_error_context
- (wfl_operator, "Impossible for `%s' to be instance of `%s'",
- t1, lang_printable_name (op2_type, 0));
- free (t1);
- error_found = 1;
- }
-
- break;
-
- /* 15.21 Bitwise and Logical Operators */
- case BIT_AND_EXPR:
- case BIT_XOR_EXPR:
- case BIT_IOR_EXPR:
- if (JINTEGRAL_TYPE_P (op1_type) && JINTEGRAL_TYPE_P (op2_type))
- /* Binary numeric promotion is performed on both operand and the
- expression retain that type */
- prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
-
- else if (TREE_CODE (op1_type) == BOOLEAN_TYPE
- && TREE_CODE (op1_type) == BOOLEAN_TYPE)
- /* The type of the bitwise operator expression is BOOLEAN */
- prom_type = boolean_type_node;
- else
- {
- if (!JINTEGRAL_TYPE_P (op1_type))
- ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type);
- if (!JINTEGRAL_TYPE_P (op2_type) && (op1_type != op2_type))
- ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op2_type);
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- /* Insert a break here if adding thing before the switch's
- break for this case */
- }
- break;
-
- /* 15.22 Conditional-And Operator */
- case TRUTH_ANDIF_EXPR:
- /* 15.23 Conditional-Or Operator */
- case TRUTH_ORIF_EXPR:
- /* Operands must be of BOOLEAN type */
- if (TREE_CODE (op1_type) != BOOLEAN_TYPE ||
- TREE_CODE (op2_type) != BOOLEAN_TYPE)
- {
- if (TREE_CODE (op1_type) != BOOLEAN_TYPE)
- ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op1_type);
- if (TREE_CODE (op2_type) != BOOLEAN_TYPE && (op1_type != op2_type))
- ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op2_type);
- TREE_TYPE (node) = boolean_type_node;
- error_found = 1;
- break;
- }
- else if (integer_zerop (op1))
- {
- return code == TRUTH_ANDIF_EXPR ? op1 : op2;
- }
- else if (integer_onep (op1))
- {
- return code == TRUTH_ANDIF_EXPR ? op2 : op1;
- }
- /* The type of the conditional operators is BOOLEAN */
- prom_type = boolean_type_node;
- break;
-
- /* 15.19.1 Numerical Comparison Operators <, <=, >, >= */
- case LT_EXPR:
- case GT_EXPR:
- case LE_EXPR:
- case GE_EXPR:
- /* The type of each of the operands must be a primitive numeric
- type */
- if (!JNUMERIC_TYPE_P (op1_type) || ! JNUMERIC_TYPE_P (op2_type))
- {
- if (!JNUMERIC_TYPE_P (op1_type))
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
- if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
- TREE_TYPE (node) = boolean_type_node;
- error_found = 1;
- break;
- }
- /* Binary numeric promotion is performed on the operands */
- binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
- /* The type of the relation expression is always BOOLEAN */
- prom_type = boolean_type_node;
- break;
-
- /* 15.20 Equality Operator */
- case EQ_EXPR:
- case NE_EXPR:
- /* It's time for us to patch the strings. */
- if ((cn = patch_string (op1)))
- {
- op1 = cn;
- op1_type = TREE_TYPE (op1);
- }
- if ((cn = patch_string (op2)))
- {
- op2 = cn;
- op2_type = TREE_TYPE (op2);
- }
-
- /* 15.20.1 Numerical Equality Operators == and != */
- /* Binary numeric promotion is performed on the operands */
- if (JNUMERIC_TYPE_P (op1_type) && JNUMERIC_TYPE_P (op2_type))
- binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
-
- /* 15.20.2 Boolean Equality Operators == and != */
- else if (TREE_CODE (op1_type) == BOOLEAN_TYPE &&
- TREE_CODE (op2_type) == BOOLEAN_TYPE)
- ; /* Nothing to do here */
-
- /* 15.20.3 Reference Equality Operators == and != */
- /* Types have to be either references or the null type. If
- they're references, it must be possible to convert either
- type to the other by casting conversion. */
- else if (op1 == null_pointer_node || op2 == null_pointer_node
- || (JREFERENCE_TYPE_P (op1_type) && JREFERENCE_TYPE_P (op2_type)
- && (valid_ref_assignconv_cast_p (op1_type, op2_type, 1)
- || valid_ref_assignconv_cast_p (op2_type,
- op1_type, 1))))
- ; /* Nothing to do here */
-
- /* Else we have an error figure what can't be converted into
- what and report the error */
- else
- {
- char *t1;
- t1 = xstrdup (lang_printable_name (op1_type, 0));
- parse_error_context
- (wfl_operator,
- "Incompatible type for `%s'. Can't convert `%s' to `%s'",
- operator_string (node), t1,
- lang_printable_name (op2_type, 0));
- free (t1);
- TREE_TYPE (node) = boolean_type_node;
- error_found = 1;
- break;
- }
- prom_type = boolean_type_node;
- break;
- default:
- abort ();
- }
-
- if (error_found)
- return error_mark_node;
-
- TREE_OPERAND (node, 0) = op1;
- TREE_OPERAND (node, 1) = op2;
- TREE_TYPE (node) = prom_type;
- TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
-
- if (flag_emit_xref)
- return node;
-
- /* fold does not respect side-effect order as required for Java but not C.
- * Also, it sometimes create SAVE_EXPRs which are bad when emitting
- * bytecode.
- */
- if (flag_emit_class_files ? (TREE_CONSTANT (op1) && TREE_CONSTANT (op2))
- : ! TREE_SIDE_EFFECTS (node))
- node = fold (node);
- return node;
-}
-
-/* Concatenate the STRING_CST CSTE and STRING. When AFTER is a non
- zero value, the value of CSTE comes after the valude of STRING */
-
-static tree
-do_merge_string_cste (cste, string, string_len, after)
- tree cste;
- const char *string;
- int string_len, after;
-{
- const char *old = TREE_STRING_POINTER (cste);
- int old_len = TREE_STRING_LENGTH (cste);
- int len = old_len + string_len;
- char *new = alloca (len+1);
-
- if (after)
- {
- memcpy (new, string, string_len);
- memcpy (&new [string_len], old, old_len);
- }
- else
- {
- memcpy (new, old, old_len);
- memcpy (&new [old_len], string, string_len);
- }
- new [len] = '\0';
- return build_string (len, new);
-}
-
-/* Tries to merge OP1 (a STRING_CST) and OP2 (if suitable). Return a
- new STRING_CST on success, NULL_TREE on failure */
-
-static tree
-merge_string_cste (op1, op2, after)
- tree op1, op2;
- int after;
-{
- /* Handle two string constants right away */
- if (TREE_CODE (op2) == STRING_CST)
- return do_merge_string_cste (op1, TREE_STRING_POINTER (op2),
- TREE_STRING_LENGTH (op2), after);
-
- /* Reasonable integer constant can be treated right away */
- if (TREE_CODE (op2) == INTEGER_CST && !TREE_CONSTANT_OVERFLOW (op2))
- {
- static const char *const boolean_true = "true";
- static const char *const boolean_false = "false";
- static const char *const null_pointer = "null";
- char ch[3];
- const char *string;
-
- if (op2 == boolean_true_node)
- string = boolean_true;
- else if (op2 == boolean_false_node)
- string = boolean_false;
- else if (op2 == null_pointer_node)
- string = null_pointer;
- else if (TREE_TYPE (op2) == char_type_node)
- {
- ch[0] = (char )TREE_INT_CST_LOW (op2);
- ch[1] = '\0';
- string = ch;
- }
- else
- string = print_int_node (op2);
-
- return do_merge_string_cste (op1, string, strlen (string), after);
- }
- return NULL_TREE;
-}
-
-/* Tries to statically concatenate OP1 and OP2 if possible. Either one
- has to be a STRING_CST and the other part must be a STRING_CST or a
- INTEGRAL constant. Return a new STRING_CST if the operation
- succeed, NULL_TREE otherwise.
-
- If the case we want to optimize for space, we might want to return
- NULL_TREE for each invocation of this routine. FIXME */
-
-static tree
-string_constant_concatenation (op1, op2)
- tree op1, op2;
-{
- if (TREE_CODE (op1) == STRING_CST || (TREE_CODE (op2) == STRING_CST))
- {
- tree string, rest;
- int invert;
-
- string = (TREE_CODE (op1) == STRING_CST ? op1 : op2);
- rest = (string == op1 ? op2 : op1);
- invert = (string == op1 ? 0 : 1 );
-
- /* Walk REST, only if it looks reasonable */
- if (TREE_CODE (rest) != STRING_CST
- && !IS_CRAFTED_STRING_BUFFER_P (rest)
- && !JSTRING_TYPE_P (TREE_TYPE (rest))
- && TREE_CODE (rest) == EXPR_WITH_FILE_LOCATION)
- {
- rest = java_complete_tree (rest);
- if (rest == error_mark_node)
- return error_mark_node;
- rest = fold (rest);
- }
- return merge_string_cste (string, rest, invert);
- }
- return NULL_TREE;
-}
-
-/* Implement the `+' operator. Does static optimization if possible,
- otherwise create (if necessary) and append elements to a
- StringBuffer. The StringBuffer will be carried around until it is
- used for a function call or an assignment. Then toString() will be
- called on it to turn it into a String object. */
-
-static tree
-build_string_concatenation (op1, op2)
- tree op1, op2;
-{
- tree result;
- int side_effects = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
-
- if (flag_emit_xref)
- return build (PLUS_EXPR, string_type_node, op1, op2);
-
- /* Try to do some static optimization */
- if ((result = string_constant_concatenation (op1, op2)))
- return result;
-
- /* Discard empty strings on either side of the expression */
- if (TREE_CODE (op1) == STRING_CST && TREE_STRING_LENGTH (op1) == 0)
- {
- op1 = op2;
- op2 = NULL_TREE;
- }
- else if (TREE_CODE (op2) == STRING_CST && TREE_STRING_LENGTH (op2) == 0)
- op2 = NULL_TREE;
-
- /* If operands are string constant, turn then into object references */
- if (TREE_CODE (op1) == STRING_CST)
- op1 = patch_string_cst (op1);
- if (op2 && TREE_CODE (op2) == STRING_CST)
- op2 = patch_string_cst (op2);
-
- /* If either one of the constant is null and the other non null
- operand is a String object, return it. */
- if (JSTRING_TYPE_P (TREE_TYPE (op1)) && !op2)
- return op1;
-
- /* If OP1 isn't already a StringBuffer, create and
- initialize a new one */
- if (!IS_CRAFTED_STRING_BUFFER_P (op1))
- {
- /* Two solutions here:
- 1) OP1 is a constant string reference, we call new StringBuffer(OP1)
- 2) OP1 is something else, we call new StringBuffer().append(OP1). */
- if (TREE_CONSTANT (op1) && JSTRING_TYPE_P (TREE_TYPE (op1)))
- op1 = BUILD_STRING_BUFFER (op1);
- else
- {
- tree aNew = BUILD_STRING_BUFFER (NULL_TREE);
- op1 = make_qualified_primary (aNew, BUILD_APPEND (op1), 0);
- }
- }
-
- if (op2)
- {
- /* OP1 is no longer the last node holding a crafted StringBuffer */
- IS_CRAFTED_STRING_BUFFER_P (op1) = 0;
- /* Create a node for `{new...,xxx}.append (op2)' */
- if (op2)
- op1 = make_qualified_primary (op1, BUILD_APPEND (op2), 0);
- }
-
- /* Mark the last node holding a crafted StringBuffer */
- IS_CRAFTED_STRING_BUFFER_P (op1) = 1;
-
- TREE_SIDE_EFFECTS (op1) = side_effects;
- return op1;
-}
-
-/* Patch the string node NODE. NODE can be a STRING_CST of a crafted
- StringBuffer. If no string were found to be patched, return
- NULL. */
-
-static tree
-patch_string (node)
- tree node;
-{
- if (node == error_mark_node)
- return error_mark_node;
- if (TREE_CODE (node) == STRING_CST)
- return patch_string_cst (node);
- else if (IS_CRAFTED_STRING_BUFFER_P (node))
- {
- int saved = ctxp->explicit_constructor_p;
- tree invoke = build_method_invocation (wfl_to_string, NULL_TREE);
- tree ret;
- /* Temporary disable forbid the use of `this'. */
- ctxp->explicit_constructor_p = 0;
- ret = java_complete_tree (make_qualified_primary (node, invoke, 0));
- /* String concatenation arguments must be evaluated in order too. */
- ret = force_evaluation_order (ret);
- /* Restore it at its previous value */
- ctxp->explicit_constructor_p = saved;
- return ret;
- }
- return NULL_TREE;
-}
-
-/* Build the internal representation of a string constant. */
-
-static tree
-patch_string_cst (node)
- tree node;
-{
- int location;
- if (! flag_emit_class_files)
- {
- node = get_identifier (TREE_STRING_POINTER (node));
- location = alloc_name_constant (CONSTANT_String, node);
- node = build_ref_from_constant_pool (location);
- }
- TREE_TYPE (node) = string_ptr_type_node;
- TREE_CONSTANT (node) = 1;
- return node;
-}
-
-/* Build an incomplete unary operator expression. */
-
-static tree
-build_unaryop (op_token, op_location, op1)
- int op_token, op_location;
- tree op1;
-{
- enum tree_code op;
- tree unaryop;
- switch (op_token)
- {
- case PLUS_TK: op = UNARY_PLUS_EXPR; break;
- case MINUS_TK: op = NEGATE_EXPR; break;
- case NEG_TK: op = TRUTH_NOT_EXPR; break;
- case NOT_TK: op = BIT_NOT_EXPR; break;
- default: abort ();
- }
-
- unaryop = build1 (op, NULL_TREE, op1);
- TREE_SIDE_EFFECTS (unaryop) = 1;
- /* Store the location of the operator, for better error report. The
- string of the operator will be rebuild based on the OP value. */
- EXPR_WFL_LINECOL (unaryop) = op_location;
- return unaryop;
-}
-
-/* Special case for the ++/-- operators, since they require an extra
- argument to build, which is set to NULL and patched
- later. IS_POST_P is 1 if the operator, 0 otherwise. */
-
-static tree
-build_incdec (op_token, op_location, op1, is_post_p)
- int op_token, op_location;
- tree op1;
- int is_post_p;
-{
- static const enum tree_code lookup [2][2] =
- {
- { PREDECREMENT_EXPR, PREINCREMENT_EXPR, },
- { POSTDECREMENT_EXPR, POSTINCREMENT_EXPR, },
- };
- tree node = build (lookup [is_post_p][(op_token - DECR_TK)],
- NULL_TREE, op1, NULL_TREE);
- TREE_SIDE_EFFECTS (node) = 1;
- /* Store the location of the operator, for better error report. The
- string of the operator will be rebuild based on the OP value. */
- EXPR_WFL_LINECOL (node) = op_location;
- return node;
-}
-
-/* Build an incomplete cast operator, based on the use of the
- CONVERT_EXPR. Note that TREE_TYPE of the constructed node is
- set. java_complete_tree is trained to walk a CONVERT_EXPR even
- though its type is already set. */
-
-static tree
-build_cast (location, type, exp)
- int location;
- tree type, exp;
-{
- tree node = build1 (CONVERT_EXPR, type, exp);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-}
-
-/* Build an incomplete class reference operator. */
-static tree
-build_incomplete_class_ref (location, class_name)
- int location;
- tree class_name;
-{
- tree node = build1 (CLASS_LITERAL, NULL_TREE, class_name);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-}
-
-/* Complete an incomplete class reference operator. */
-static tree
-patch_incomplete_class_ref (node)
- tree node;
-{
- tree type = TREE_OPERAND (node, 0);
- tree ref_type;
-
- if (!(ref_type = resolve_type_during_patch (type)))
- return error_mark_node;
-
- if (!flag_emit_class_files || JPRIMITIVE_TYPE_P (ref_type))
- {
- tree dot = build_class_ref (ref_type);
- /* A class referenced by `foo.class' is initialized. */
- if (!flag_emit_class_files)
- dot = build_class_init (ref_type, dot);
- return java_complete_tree (dot);
- }
-
- /* If we're emitting class files and we have to deal with non
- primitive types, we invoke (and consider generating) the
- synthetic static method `class$'. */
- if (!TYPE_DOT_CLASS (current_class))
- build_dot_class_method (current_class);
- ref_type = build_dot_class_method_invocation (ref_type);
- return java_complete_tree (ref_type);
-}
-
-/* 15.14 Unary operators. We return error_mark_node in case of error,
- but preserve the type of NODE if the type is fixed. */
-
-static tree
-patch_unaryop (node, wfl_op)
- tree node;
- tree wfl_op;
-{
- tree op = TREE_OPERAND (node, 0);
- tree op_type = TREE_TYPE (op);
- tree prom_type = NULL_TREE, value, decl;
- int outer_field_flag = 0;
- int code = TREE_CODE (node);
- int error_found = 0;
-
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- switch (code)
- {
- /* 15.13.2 Postfix Increment Operator ++ */
- case POSTINCREMENT_EXPR:
- /* 15.13.3 Postfix Increment Operator -- */
- case POSTDECREMENT_EXPR:
- /* 15.14.1 Prefix Increment Operator ++ */
- case PREINCREMENT_EXPR:
- /* 15.14.2 Prefix Decrement Operator -- */
- case PREDECREMENT_EXPR:
- op = decl = strip_out_static_field_access_decl (op);
- outer_field_flag = outer_field_expanded_access_p (op, NULL, NULL, NULL);
- /* We might be trying to change an outer field accessed using
- access method. */
- if (outer_field_flag)
- {
- /* Retrieve the decl of the field we're trying to access. We
- do that by first retrieving the function we would call to
- access the field. It has been already verified that this
- field isn't final */
- if (flag_emit_class_files)
- decl = TREE_OPERAND (op, 0);
- else
- decl = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (op, 0), 0), 0);
- decl = DECL_FUNCTION_ACCESS_DECL (decl);
- }
- /* We really should have a JAVA_ARRAY_EXPR to avoid this */
- else if (!JDECL_P (decl)
- && TREE_CODE (decl) != COMPONENT_REF
- && !(flag_emit_class_files && TREE_CODE (decl) == ARRAY_REF)
- && TREE_CODE (decl) != INDIRECT_REF
- && !(TREE_CODE (decl) == COMPOUND_EXPR
- && TREE_OPERAND (decl, 1)
- && (TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)))
- {
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
-
- /* From now on, we know that op if a variable and that it has a
- valid wfl. We use wfl_op to locate errors related to the
- ++/-- operand. */
- if (!JNUMERIC_TYPE_P (op_type))
- {
- parse_error_context
- (wfl_op, "Invalid argument type `%s' to `%s'",
- lang_printable_name (op_type, 0), operator_string (node));
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
- else
- {
- /* Before the addition, binary numeric promotion is performed on
- both operands, if really necessary */
- if (JINTEGRAL_TYPE_P (op_type))
- {
- value = build_int_2 (1, 0);
- TREE_TYPE (value) = TREE_TYPE (node) = op_type;
- }
- else
- {
- value = build_int_2 (1, 0);
- TREE_TYPE (node) =
- binary_numeric_promotion (op_type,
- TREE_TYPE (value), &op, &value);
- }
-
- /* We remember we might be accessing an outer field */
- if (outer_field_flag)
- {
- /* We re-generate an access to the field */
- value = build (PLUS_EXPR, TREE_TYPE (op),
- build_outer_field_access (wfl_op, decl), value);
-
- /* And we patch the original access$() into a write
- with plus_op as a rhs */
- return outer_field_access_fix (node, op, value);
- }
-
- /* And write back into the node. */
- TREE_OPERAND (node, 0) = op;
- TREE_OPERAND (node, 1) = value;
- /* Convert the overall back into its original type, if
- necessary, and return */
- if (JINTEGRAL_TYPE_P (op_type))
- return fold (node);
- else
- return fold (convert (op_type, node));
- }
- break;
-
- /* 15.14.3 Unary Plus Operator + */
- case UNARY_PLUS_EXPR:
- /* 15.14.4 Unary Minus Operator - */
- case NEGATE_EXPR:
- if (!JNUMERIC_TYPE_P (op_type))
- {
- ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op_type);
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
- /* Unary numeric promotion is performed on operand */
- else
- {
- op = do_unary_numeric_promotion (op);
- prom_type = TREE_TYPE (op);
- if (code == UNARY_PLUS_EXPR)
- return fold (op);
- }
- break;
-
- /* 15.14.5 Bitwise Complement Operator ~ */
- case BIT_NOT_EXPR:
- if (!JINTEGRAL_TYPE_P (op_type))
- {
- ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op_type);
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
- else
- {
- op = do_unary_numeric_promotion (op);
- prom_type = TREE_TYPE (op);
- }
- break;
-
- /* 15.14.6 Logical Complement Operator ! */
- case TRUTH_NOT_EXPR:
- if (TREE_CODE (op_type) != BOOLEAN_TYPE)
- {
- ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op_type);
- /* But the type is known. We will report an error if further
- attempt of a assignment is made with this rhs */
- TREE_TYPE (node) = boolean_type_node;
- error_found = 1;
- }
- else
- prom_type = boolean_type_node;
- break;
-
- /* 15.15 Cast Expression */
- case CONVERT_EXPR:
- value = patch_cast (node, wfl_operator);
- if (value == error_mark_node)
- {
- /* If this cast is part of an assignment, we tell the code
- that deals with it not to complain about a mismatch,
- because things have been cast, anyways */
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
- else
- {
- value = fold (value);
- TREE_SIDE_EFFECTS (value) = TREE_SIDE_EFFECTS (op);
- return value;
- }
- break;
- }
-
- if (error_found)
- return error_mark_node;
-
- /* There are cases where node has been replaced by something else
- and we don't end up returning here: UNARY_PLUS_EXPR,
- CONVERT_EXPR, {POST,PRE}{INCR,DECR}EMENT_EXPR. */
- TREE_OPERAND (node, 0) = fold (op);
- TREE_TYPE (node) = prom_type;
- TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op);
- return fold (node);
-}
-
-/* Generic type resolution that sometimes takes place during node
- patching. Returned the resolved type or generate an error
- message. Return the resolved type or NULL_TREE. */
-
-static tree
-resolve_type_during_patch (type)
- tree type;
-{
- if (unresolved_type_p (type, NULL))
- {
- tree type_decl = resolve_and_layout (EXPR_WFL_NODE (type), type);
- if (!type_decl)
- {
- parse_error_context (type,
- "Class `%s' not found in type declaration",
- IDENTIFIER_POINTER (EXPR_WFL_NODE (type)));
- return NULL_TREE;
- }
- return TREE_TYPE (type_decl);
- }
- return type;
-}
-/* 5.5 Casting Conversion. error_mark_node is returned if an error is
- found. Otherwise NODE or something meant to replace it is returned. */
-
-static tree
-patch_cast (node, wfl_op)
- tree node;
- tree wfl_op;
-{
- tree op = TREE_OPERAND (node, 0);
- tree cast_type = TREE_TYPE (node);
- tree patched, op_type;
- char *t1;
-
- /* Some string patching might be necessary at this stage */
- if ((patched = patch_string (op)))
- TREE_OPERAND (node, 0) = op = patched;
- op_type = TREE_TYPE (op);
-
- /* First resolve OP_TYPE if unresolved */
- if (!(cast_type = resolve_type_during_patch (cast_type)))
- return error_mark_node;
-
- /* Check on cast that are proven correct at compile time */
- if (JNUMERIC_TYPE_P (cast_type) && JNUMERIC_TYPE_P (op_type))
- {
- /* Same type */
- if (cast_type == op_type)
- return node;
-
- /* float and double type are converted to the original type main
- variant and then to the target type. */
- if (JFLOAT_TYPE_P (op_type) && TREE_CODE (cast_type) == CHAR_TYPE)
- op = convert (integer_type_node, op);
-
- /* Try widening/narowwing convertion. Potentially, things need
- to be worked out in gcc so we implement the extreme cases
- correctly. fold_convert() needs to be fixed. */
- return convert (cast_type, op);
- }
-
- /* It's also valid to cast a boolean into a boolean */
- if (op_type == boolean_type_node && cast_type == boolean_type_node)
- return node;
-
- /* null can be casted to references */
- if (op == null_pointer_node && JREFERENCE_TYPE_P (cast_type))
- return build_null_of_type (cast_type);
-
- /* The remaining legal casts involve conversion between reference
- types. Check for their compile time correctness. */
- if (JREFERENCE_TYPE_P (op_type) && JREFERENCE_TYPE_P (cast_type)
- && valid_ref_assignconv_cast_p (op_type, cast_type, 1))
- {
- TREE_TYPE (node) = promote_type (cast_type);
- /* Now, the case can be determined correct at compile time if
- OP_TYPE can be converted into CAST_TYPE by assignment
- conversion (5.2) */
-
- if (valid_ref_assignconv_cast_p (op_type, cast_type, 0))
- {
- TREE_SET_CODE (node, NOP_EXPR);
- return node;
- }
-
- if (flag_emit_class_files)
- {
- TREE_SET_CODE (node, CONVERT_EXPR);
- return node;
- }
-
- /* The cast requires a run-time check */
- return build (CALL_EXPR, promote_type (cast_type),
- build_address_of (soft_checkcast_node),
- tree_cons (NULL_TREE, build_class_ref (cast_type),
- build_tree_list (NULL_TREE, op)),
- NULL_TREE);
- }
-
- /* Any other casts are proven incorrect at compile time */
- t1 = xstrdup (lang_printable_name (op_type, 0));
- parse_error_context (wfl_op, "Invalid cast from `%s' to `%s'",
- t1, lang_printable_name (cast_type, 0));
- free (t1);
- return error_mark_node;
-}
-
-/* Build a null constant and give it the type TYPE. */
-
-static tree
-build_null_of_type (type)
- tree type;
-{
- tree node = build_int_2 (0, 0);
- TREE_TYPE (node) = promote_type (type);
- return node;
-}
-
-/* Build an ARRAY_REF incomplete tree node. Note that operand 1 isn't
- a list of indices. */
-static tree
-build_array_ref (location, array, index)
- int location;
- tree array, index;
-{
- tree node = build (ARRAY_REF, NULL_TREE, array, index);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-}
-
-/* 15.12 Array Access Expression */
-
-static tree
-patch_array_ref (node)
- tree node;
-{
- tree array = TREE_OPERAND (node, 0);
- tree array_type = TREE_TYPE (array);
- tree index = TREE_OPERAND (node, 1);
- tree index_type = TREE_TYPE (index);
- int error_found = 0;
-
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- if (TREE_CODE (array_type) == POINTER_TYPE)
- array_type = TREE_TYPE (array_type);
-
- /* The array reference must be an array */
- if (!TYPE_ARRAY_P (array_type))
- {
- parse_error_context
- (wfl_operator,
- "`[]' can only be applied to arrays. It can't be applied to `%s'",
- lang_printable_name (array_type, 0));
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
-
- /* The array index undergoes unary numeric promotion. The promoted
- type must be int */
- index = do_unary_numeric_promotion (index);
- if (TREE_TYPE (index) != int_type_node)
- {
- if (valid_cast_to_p (index_type, int_type_node))
- parse_error_context (wfl_operator,
- "Incompatible type for `[]'. Explicit cast needed to convert `%s' to `int'",
- lang_printable_name (index_type, 0));
- else
- parse_error_context (wfl_operator,
- "Incompatible type for `[]'. Can't convert `%s' to `int'",
- lang_printable_name (index_type, 0));
- TREE_TYPE (node) = error_mark_node;
- error_found = 1;
- }
-
- if (error_found)
- return error_mark_node;
-
- array_type = TYPE_ARRAY_ELEMENT (array_type);
-
- if (flag_emit_class_files || flag_emit_xref)
- {
- TREE_OPERAND (node, 0) = array;
- TREE_OPERAND (node, 1) = index;
- }
- else
- node = build_java_arrayaccess (array, array_type, index);
- TREE_TYPE (node) = array_type;
- return node;
-}
-
-/* 15.9 Array Creation Expressions */
-
-static tree
-build_newarray_node (type, dims, extra_dims)
- tree type;
- tree dims;
- int extra_dims;
-{
- tree node =
- build (NEW_ARRAY_EXPR, NULL_TREE, type, nreverse (dims),
- build_int_2 (extra_dims, 0));
- return node;
-}
-
-static tree
-patch_newarray (node)
- tree node;
-{
- tree type = TREE_OPERAND (node, 0);
- tree dims = TREE_OPERAND (node, 1);
- tree cdim, array_type;
- int error_found = 0;
- int ndims = 0;
- int xdims = TREE_INT_CST_LOW (TREE_OPERAND (node, 2));
-
- /* Dimension types are verified. It's better for the types to be
- verified in order. */
- for (cdim = dims, ndims = 0; cdim; cdim = TREE_CHAIN (cdim), ndims++ )
- {
- int dim_error = 0;
- tree dim = TREE_VALUE (cdim);
-
- /* Dim might have been saved during its evaluation */
- dim = (TREE_CODE (dim) == SAVE_EXPR ? TREE_OPERAND (dim, 0) : dim);
-
- /* The type of each specified dimension must be an integral type. */
- if (!JINTEGRAL_TYPE_P (TREE_TYPE (dim)))
- dim_error = 1;
-
- /* Each expression undergoes an unary numeric promotion (5.6.1) and the
- promoted type must be int. */
- else
- {
- dim = do_unary_numeric_promotion (dim);
- if (TREE_TYPE (dim) != int_type_node)
- dim_error = 1;
- }
-
- /* Report errors on types here */
- if (dim_error)
- {
- parse_error_context
- (TREE_PURPOSE (cdim),
- "Incompatible type for dimension in array creation expression. %s convert `%s' to `int'",
- (valid_cast_to_p (TREE_TYPE (dim), int_type_node) ?
- "Explicit cast needed to" : "Can't"),
- lang_printable_name (TREE_TYPE (dim), 0));
- error_found = 1;
- }
-
- TREE_PURPOSE (cdim) = NULL_TREE;
- }
-
- /* Resolve array base type if unresolved */
- if (!(type = resolve_type_during_patch (type)))
- error_found = 1;
-
- if (error_found)
- {
- /* We don't want further evaluation of this bogus array creation
- operation */
- TREE_TYPE (node) = error_mark_node;
- return error_mark_node;
- }
-
- /* Set array_type to the actual (promoted) array type of the result. */
- if (TREE_CODE (type) == RECORD_TYPE)
- type = build_pointer_type (type);
- while (--xdims >= 0)
- {
- type = promote_type (build_java_array_type (type, -1));
- }
- dims = nreverse (dims);
- array_type = type;
- for (cdim = dims; cdim; cdim = TREE_CHAIN (cdim))
- {
- type = array_type;
- array_type
- = build_java_array_type (type,
- TREE_CODE (cdim) == INTEGER_CST
- ? (HOST_WIDE_INT) TREE_INT_CST_LOW (cdim)
- : -1);
- array_type = promote_type (array_type);
- }
- dims = nreverse (dims);
-
- /* The node is transformed into a function call. Things are done
- differently according to the number of dimensions. If the number
- of dimension is equal to 1, then the nature of the base type
- (primitive or not) matters. */
- if (ndims == 1)
- return build_new_array (type, TREE_VALUE (dims));
-
- /* Can't reuse what's already written in expr.c because it uses the
- JVM stack representation. Provide a build_multianewarray. FIXME */
- return build (CALL_EXPR, array_type,
- build_address_of (soft_multianewarray_node),
- tree_cons (NULL_TREE, build_class_ref (TREE_TYPE (array_type)),
- tree_cons (NULL_TREE,
- build_int_2 (ndims, 0), dims )),
- NULL_TREE);
-}
-
-/* 10.6 Array initializer. */
-
-/* Build a wfl for array element that don't have one, so we can
- pin-point errors. */
-
-static tree
-maybe_build_array_element_wfl (node)
- tree node;
-{
- if (TREE_CODE (node) != EXPR_WITH_FILE_LOCATION)
- return build_expr_wfl (NULL_TREE, ctxp->filename,
- ctxp->elc.line, ctxp->elc.prev_col);
- else
- return NULL_TREE;
-}
-
-/* Build a NEW_ARRAY_INIT that features a CONSTRUCTOR node. This makes
- identification of initialized arrays easier to detect during walk
- and expansion. */
-
-static tree
-build_new_array_init (location, values)
- int location;
- tree values;
-{
- tree constructor = build (CONSTRUCTOR, NULL_TREE, NULL_TREE, values);
- tree to_return = build1 (NEW_ARRAY_INIT, NULL_TREE, constructor);
- EXPR_WFL_LINECOL (to_return) = location;
- return to_return;
-}
-
-/* Expand a NEW_ARRAY_INIT node. Return error_mark_node if an error
- occurred. Otherwise return NODE after having set its type
- appropriately. */
-
-static tree
-patch_new_array_init (type, node)
- tree type, node;
-{
- int error_seen = 0;
- tree current, element_type;
- HOST_WIDE_INT length;
- int all_constant = 1;
- tree init = TREE_OPERAND (node, 0);
-
- if (TREE_CODE (type) != POINTER_TYPE || ! TYPE_ARRAY_P (TREE_TYPE (type)))
- {
- parse_error_context (node,
- "Invalid array initializer for non-array type `%s'",
- lang_printable_name (type, 1));
- return error_mark_node;
- }
- type = TREE_TYPE (type);
- element_type = TYPE_ARRAY_ELEMENT (type);
-
- CONSTRUCTOR_ELTS (init) = nreverse (CONSTRUCTOR_ELTS (init));
-
- for (length = 0, current = CONSTRUCTOR_ELTS (init);
- current; length++, current = TREE_CHAIN (current))
- {
- tree elt = TREE_VALUE (current);
- if (elt == NULL_TREE || TREE_CODE (elt) != NEW_ARRAY_INIT)
- {
- error_seen |= array_constructor_check_entry (element_type, current);
- elt = TREE_VALUE (current);
- /* When compiling to native code, STRING_CST is converted to
- INDIRECT_REF, but still with a TREE_CONSTANT flag. */
- if (! TREE_CONSTANT (elt) || TREE_CODE (elt) == INDIRECT_REF)
- all_constant = 0;
- }
- else
- {
- TREE_VALUE (current) = patch_new_array_init (element_type, elt);
- TREE_PURPOSE (current) = NULL_TREE;
- all_constant = 0;
- }
- if (elt && TREE_CODE (elt) == TREE_LIST
- && TREE_VALUE (elt) == error_mark_node)
- error_seen = 1;
- }
-
- if (error_seen)
- return error_mark_node;
-
- /* Create a new type. We can't reuse the one we have here by
- patching its dimension because it originally is of dimension -1
- hence reused by gcc. This would prevent triangular arrays. */
- type = build_java_array_type (element_type, length);
- TREE_TYPE (init) = TREE_TYPE (TREE_CHAIN (TREE_CHAIN (TYPE_FIELDS (type))));
- TREE_TYPE (node) = promote_type (type);
- TREE_CONSTANT (init) = all_constant;
- TREE_CONSTANT (node) = all_constant;
- return node;
-}
-
-/* Verify that one entry of the initializer element list can be
- assigned to the array base type. Report 1 if an error occurred, 0
- otherwise. */
-
-static int
-array_constructor_check_entry (type, entry)
- tree type, entry;
-{
- char *array_type_string = NULL; /* For error reports */
- tree value, type_value, new_value, wfl_value, patched;
- int error_seen = 0;
-
- new_value = NULL_TREE;
- wfl_value = TREE_VALUE (entry);
-
- value = java_complete_tree (TREE_VALUE (entry));
- /* patch_string return error_mark_node if arg is error_mark_node */
- if ((patched = patch_string (value)))
- value = patched;
- if (value == error_mark_node)
- return 1;
-
- type_value = TREE_TYPE (value);
-
- /* At anytime, try_builtin_assignconv can report a warning on
- constant overflow during narrowing. */
- SET_WFL_OPERATOR (wfl_operator, TREE_PURPOSE (entry), wfl_value);
- new_value = try_builtin_assignconv (wfl_operator, type, value);
- if (!new_value && (new_value = try_reference_assignconv (type, value)))
- type_value = promote_type (type);
-
- /* Check and report errors */
- if (!new_value)
- {
- const char *const msg = (!valid_cast_to_p (type_value, type) ?
- "Can't" : "Explicit cast needed to");
- if (!array_type_string)
- array_type_string = xstrdup (lang_printable_name (type, 1));
- parse_error_context
- (wfl_operator, "Incompatible type for array. %s convert `%s' to `%s'",
- msg, lang_printable_name (type_value, 1), array_type_string);
- error_seen = 1;
- }
-
- if (new_value)
- TREE_VALUE (entry) = new_value;
-
- if (array_type_string)
- free (array_type_string);
-
- TREE_PURPOSE (entry) = NULL_TREE;
- return error_seen;
-}
-
-static tree
-build_this (location)
- int location;
-{
- tree node = build_wfl_node (this_identifier_node);
- TREE_SET_CODE (node, THIS_EXPR);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-}
-
-/* 14.15 The return statement. It builds a modify expression that
- assigns the returned value to the RESULT_DECL that hold the value
- to be returned. */
-
-static tree
-build_return (location, op)
- int location;
- tree op;
-{
- tree node = build1 (RETURN_EXPR, NULL_TREE, op);
- EXPR_WFL_LINECOL (node) = location;
- node = build_debugable_stmt (location, node);
- return node;
-}
-
-static tree
-patch_return (node)
- tree node;
-{
- tree return_exp = TREE_OPERAND (node, 0);
- tree meth = current_function_decl;
- tree mtype = TREE_TYPE (TREE_TYPE (current_function_decl));
- int error_found = 0;
-
- TREE_TYPE (node) = error_mark_node;
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- /* It's invalid to have a return value within a function that is
- declared with the keyword void or that is a constructor */
- if (return_exp && (mtype == void_type_node || DECL_CONSTRUCTOR_P (meth)))
- error_found = 1;
-
- /* It's invalid to use a return statement in a static block */
- if (DECL_CLINIT_P (current_function_decl))
- error_found = 1;
-
- /* It's invalid to have a no return value within a function that
- isn't declared with the keyword `void' */
- if (!return_exp && (mtype != void_type_node && !DECL_CONSTRUCTOR_P (meth)))
- error_found = 2;
-
- if (DECL_INSTINIT_P (current_function_decl))
- error_found = 1;
-
- if (error_found)
- {
- if (DECL_INSTINIT_P (current_function_decl))
- parse_error_context (wfl_operator,
- "`return' inside instance initializer");
-
- else if (DECL_CLINIT_P (current_function_decl))
- parse_error_context (wfl_operator,
- "`return' inside static initializer");
-
- else if (!DECL_CONSTRUCTOR_P (meth))
- {
- char *t = xstrdup (lang_printable_name (mtype, 0));
- parse_error_context (wfl_operator,
- "`return' with%s value from `%s %s'",
- (error_found == 1 ? "" : "out"),
- t, lang_printable_name (meth, 0));
- free (t);
- }
- else
- parse_error_context (wfl_operator,
- "`return' with value from constructor `%s'",
- lang_printable_name (meth, 0));
- return error_mark_node;
- }
-
- /* If we have a return_exp, build a modify expression and expand
- it. Note: at that point, the assignment is declared valid, but we
- may want to carry some more hacks */
- if (return_exp)
- {
- tree exp = java_complete_tree (return_exp);
- tree modify, patched;
-
- if ((patched = patch_string (exp)))
- exp = patched;
-
- modify = build (MODIFY_EXPR, NULL_TREE, DECL_RESULT (meth), exp);
- EXPR_WFL_LINECOL (modify) = EXPR_WFL_LINECOL (node);
- modify = java_complete_tree (modify);
-
- if (modify != error_mark_node)
- {
- TREE_SIDE_EFFECTS (modify) = 1;
- TREE_OPERAND (node, 0) = modify;
- }
- else
- return error_mark_node;
- }
- TREE_TYPE (node) = void_type_node;
- TREE_SIDE_EFFECTS (node) = 1;
- return node;
-}
-
-/* 14.8 The if Statement */
-
-static tree
-build_if_else_statement (location, expression, if_body, else_body)
- int location;
- tree expression, if_body, else_body;
-{
- tree node;
- if (!else_body)
- else_body = empty_stmt_node;
- node = build (COND_EXPR, NULL_TREE, expression, if_body, else_body);
- EXPR_WFL_LINECOL (node) = location;
- node = build_debugable_stmt (location, node);
- return node;
-}
-
-static tree
-patch_if_else_statement (node)
- tree node;
-{
- tree expression = TREE_OPERAND (node, 0);
- int can_complete_normally
- = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1))
- | CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 2)));
-
- TREE_TYPE (node) = error_mark_node;
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- /* The type of expression must be boolean */
- if (TREE_TYPE (expression) != boolean_type_node
- && TREE_TYPE (expression) != promoted_boolean_type_node)
- {
- parse_error_context
- (wfl_operator,
- "Incompatible type for `if'. Can't convert `%s' to `boolean'",
- lang_printable_name (TREE_TYPE (expression), 0));
- return error_mark_node;
- }
-
- if (TREE_CODE (expression) == INTEGER_CST)
- {
- if (integer_zerop (expression))
- node = TREE_OPERAND (node, 2);
- else
- node = TREE_OPERAND (node, 1);
- if (CAN_COMPLETE_NORMALLY (node) != can_complete_normally)
- {
- node = build (COMPOUND_EXPR, void_type_node, node, empty_stmt_node);
- CAN_COMPLETE_NORMALLY (node) = can_complete_normally;
- }
- return node;
- }
- TREE_TYPE (node) = void_type_node;
- TREE_SIDE_EFFECTS (node) = 1;
- CAN_COMPLETE_NORMALLY (node) = can_complete_normally;
- return node;
-}
-
-/* 14.6 Labeled Statements */
-
-/* Action taken when a lableled statement is parsed. a new
- LABELED_BLOCK_EXPR is created. No statement is attached to the
- label, yet. LABEL can be NULL_TREE for artificially-generated blocks. */
-
-static tree
-build_labeled_block (location, label)
- int location;
- tree label;
-{
- tree label_name ;
- tree label_decl, node;
- if (label == NULL_TREE || label == continue_identifier_node)
- label_name = label;
- else
- {
- label_name = merge_qualified_name (label_id, label);
- /* Issue an error if we try to reuse a label that was previously
- declared */
- if (IDENTIFIER_LOCAL_VALUE (label_name))
- {
- EXPR_WFL_LINECOL (wfl_operator) = location;
- parse_error_context (wfl_operator,
- "Declaration of `%s' shadows a previous label declaration",
- IDENTIFIER_POINTER (label));
- EXPR_WFL_LINECOL (wfl_operator) =
- EXPR_WFL_LINECOL (IDENTIFIER_LOCAL_VALUE (label_name));
- parse_error_context (wfl_operator,
- "This is the location of the previous declaration of label `%s'",
- IDENTIFIER_POINTER (label));
- java_error_count--;
- }
- }
-
- label_decl = create_label_decl (label_name);
- node = build (LABELED_BLOCK_EXPR, NULL_TREE, label_decl, NULL_TREE);
- EXPR_WFL_LINECOL (node) = location;
- TREE_SIDE_EFFECTS (node) = 1;
- return node;
-}
-
-/* A labeled statement LBE is attached a statement. */
-
-static tree
-finish_labeled_statement (lbe, statement)
- tree lbe; /* Labeled block expr */
- tree statement;
-{
- /* In anyways, tie the loop to its statement */
- LABELED_BLOCK_BODY (lbe) = statement;
- pop_labeled_block ();
- POP_LABELED_BLOCK ();
- return lbe;
-}
-
-/* 14.10, 14.11, 14.12 Loop Statements */
-
-/* Create an empty LOOP_EXPR and make it the last in the nested loop
- list. */
-
-static tree
-build_new_loop (loop_body)
- tree loop_body;
-{
- tree loop = build (LOOP_EXPR, NULL_TREE, loop_body);
- TREE_SIDE_EFFECTS (loop) = 1;
- PUSH_LOOP (loop);
- return loop;
-}
-
-/* Create a loop body according to the following structure:
- COMPOUND_EXPR
- COMPOUND_EXPR (loop main body)
- EXIT_EXPR (this order is for while/for loops.
- LABELED_BLOCK_EXPR the order is reversed for do loops)
- LABEL_DECL (a continue occurring here branches at the
- BODY end of this labeled block)
- INCREMENT (if any)
-
- REVERSED, if non zero, tells that the loop condition expr comes
- after the body, like in the do-while loop.
-
- To obtain a loop, the loop body structure described above is
- encapsulated within a LOOP_EXPR surrounded by a LABELED_BLOCK_EXPR:
-
- LABELED_BLOCK_EXPR
- LABEL_DECL (use this label to exit the loop)
- LOOP_EXPR
- <structure described above> */
-
-static tree
-build_loop_body (location, condition, reversed)
- int location;
- tree condition;
- int reversed;
-{
- tree first, second, body;
-
- condition = build (EXIT_EXPR, NULL_TREE, condition); /* Force walk */
- EXPR_WFL_LINECOL (condition) = location; /* For accurate error report */
- condition = build_debugable_stmt (location, condition);
- TREE_SIDE_EFFECTS (condition) = 1;
-
- body = build_labeled_block (0, continue_identifier_node);
- first = (reversed ? body : condition);
- second = (reversed ? condition : body);
- return
- build (COMPOUND_EXPR, NULL_TREE,
- build (COMPOUND_EXPR, NULL_TREE, first, second), empty_stmt_node);
-}
-
-/* Install CONDITION (if any) and loop BODY (using REVERSED to tell
- their order) on the current loop. Unlink the current loop from the
- loop list. */
-
-static tree
-finish_loop_body (location, condition, body, reversed)
- int location;
- tree condition, body;
- int reversed;
-{
- tree to_return = ctxp->current_loop;
- tree loop_body = LOOP_EXPR_BODY (to_return);
- if (condition)
- {
- tree cnode = LOOP_EXPR_BODY_CONDITION_EXPR (loop_body, reversed);
- /* We wrapped the EXIT_EXPR around a WFL so we can debug it.
- The real EXIT_EXPR is one operand further. */
- EXPR_WFL_LINECOL (cnode) = location;
- /* This one is for accurate error reports */
- EXPR_WFL_LINECOL (TREE_OPERAND (cnode, 0)) = location;
- TREE_OPERAND (TREE_OPERAND (cnode, 0), 0) = condition;
- }
- LOOP_EXPR_BODY_BODY_EXPR (loop_body, reversed) = body;
- POP_LOOP ();
- return to_return;
-}
-
-/* Tailored version of finish_loop_body for FOR loops, when FOR
- loops feature the condition part */
-
-static tree
-finish_for_loop (location, condition, update, body)
- int location;
- tree condition, update, body;
-{
- /* Put the condition and the loop body in place */
- tree loop = finish_loop_body (location, condition, body, 0);
- /* LOOP is the current loop which has been now popped of the loop
- stack. Install the update block */
- LOOP_EXPR_BODY_UPDATE_BLOCK (LOOP_EXPR_BODY (loop)) = update;
- return loop;
-}
-
-/* Try to find the loop a block might be related to. This comprises
- the case where the LOOP_EXPR is found as the second operand of a
- COMPOUND_EXPR, because the loop happens to have an initialization
- part, then expressed as the first operand of the COMPOUND_EXPR. If
- the search finds something, 1 is returned. Otherwise, 0 is
- returned. The search is assumed to start from a
- LABELED_BLOCK_EXPR's block. */
-
-static tree
-search_loop (statement)
- tree statement;
-{
- if (TREE_CODE (statement) == LOOP_EXPR)
- return statement;
-
- if (TREE_CODE (statement) == BLOCK)
- statement = BLOCK_SUBBLOCKS (statement);
- else
- return NULL_TREE;
-
- if (statement && TREE_CODE (statement) == COMPOUND_EXPR)
- while (statement && TREE_CODE (statement) == COMPOUND_EXPR)
- statement = TREE_OPERAND (statement, 1);
-
- return (TREE_CODE (statement) == LOOP_EXPR
- && FOR_LOOP_P (statement) ? statement : NULL_TREE);
-}
-
-/* Return 1 if LOOP can be found in the labeled block BLOCK. 0 is
- returned otherwise. */
-
-static int
-labeled_block_contains_loop_p (block, loop)
- tree block, loop;
-{
- if (!block)
- return 0;
-
- if (LABELED_BLOCK_BODY (block) == loop)
- return 1;
-
- if (FOR_LOOP_P (loop) && search_loop (LABELED_BLOCK_BODY (block)) == loop)
- return 1;
-
- return 0;
-}
-
-/* If the loop isn't surrounded by a labeled statement, create one and
- insert LOOP as its body. */
-
-static tree
-patch_loop_statement (loop)
- tree loop;
-{
- tree loop_label;
-
- TREE_TYPE (loop) = void_type_node;
- if (labeled_block_contains_loop_p (ctxp->current_labeled_block, loop))
- return loop;
-
- loop_label = build_labeled_block (0, NULL_TREE);
- /* LOOP is an EXPR node, so it should have a valid EXPR_WFL_LINECOL
- that LOOP_LABEL could enquire about, for a better accuracy. FIXME */
- LABELED_BLOCK_BODY (loop_label) = loop;
- PUSH_LABELED_BLOCK (loop_label);
- return loop_label;
-}
-
-/* 14.13, 14.14: break and continue Statements */
-
-/* Build a break or a continue statement. a null NAME indicates an
- unlabeled break/continue statement. */
-
-static tree
-build_bc_statement (location, is_break, name)
- int location, is_break;
- tree name;
-{
- tree break_continue, label_block_expr = NULL_TREE;
-
- if (name)
- {
- if (!(label_block_expr = IDENTIFIER_LOCAL_VALUE
- (merge_qualified_name (label_id, EXPR_WFL_NODE (name)))))
- /* Null means that we don't have a target for this named
- break/continue. In this case, we make the target to be the
- label name, so that the error can be reported accuratly in
- patch_bc_statement. */
- label_block_expr = EXPR_WFL_NODE (name);
- }
- /* Unlabeled break/continue will be handled during the
- break/continue patch operation */
- break_continue
- = build (EXIT_BLOCK_EXPR, NULL_TREE, label_block_expr, NULL_TREE);
-
- IS_BREAK_STMT_P (break_continue) = is_break;
- TREE_SIDE_EFFECTS (break_continue) = 1;
- EXPR_WFL_LINECOL (break_continue) = location;
- break_continue = build_debugable_stmt (location, break_continue);
- return break_continue;
-}
-
-/* Verification of a break/continue statement. */
-
-static tree
-patch_bc_statement (node)
- tree node;
-{
- tree bc_label = EXIT_BLOCK_LABELED_BLOCK (node), target_stmt;
- tree labeled_block = ctxp->current_labeled_block;
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- /* Having an identifier here means that the target is unknown. */
- if (bc_label != NULL_TREE && TREE_CODE (bc_label) == IDENTIFIER_NODE)
- {
- parse_error_context (wfl_operator, "No label definition found for `%s'",
- IDENTIFIER_POINTER (bc_label));
- return error_mark_node;
- }
- if (! IS_BREAK_STMT_P (node))
- {
- /* It's a continue statement. */
- for (;; labeled_block = TREE_CHAIN (labeled_block))
- {
- if (labeled_block == NULL_TREE)
- {
- if (bc_label == NULL_TREE)
- parse_error_context (wfl_operator,
- "`continue' must be in loop");
- else
- parse_error_context
- (wfl_operator, "continue label `%s' does not name a loop",
- IDENTIFIER_POINTER (bc_label));
- return error_mark_node;
- }
- if ((DECL_NAME (LABELED_BLOCK_LABEL (labeled_block))
- == continue_identifier_node)
- && (bc_label == NULL_TREE
- || TREE_CHAIN (labeled_block) == bc_label))
- {
- bc_label = labeled_block;
- break;
- }
- }
- }
- else if (!bc_label)
- {
- for (;; labeled_block = TREE_CHAIN (labeled_block))
- {
- if (labeled_block == NULL_TREE)
- {
- parse_error_context (wfl_operator,
- "`break' must be in loop or switch");
- return error_mark_node;
- }
- target_stmt = LABELED_BLOCK_BODY (labeled_block);
- if (TREE_CODE (target_stmt) == SWITCH_EXPR
- || search_loop (target_stmt))
- {
- bc_label = labeled_block;
- break;
- }
- }
- }
-
- EXIT_BLOCK_LABELED_BLOCK (node) = bc_label;
- CAN_COMPLETE_NORMALLY (bc_label) = 1;
-
- /* Our break/continue don't return values. */
- TREE_TYPE (node) = void_type_node;
- /* Encapsulate the break within a compound statement so that it's
- expanded all the times by expand_expr (and not clobbered
- sometimes, like after a if statement) */
- node = add_stmt_to_compound (NULL_TREE, void_type_node, node);
- TREE_SIDE_EFFECTS (node) = 1;
- return node;
-}
-
-/* Process the exit expression belonging to a loop. Its type must be
- boolean. */
-
-static tree
-patch_exit_expr (node)
- tree node;
-{
- tree expression = TREE_OPERAND (node, 0);
- TREE_TYPE (node) = error_mark_node;
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
-
- /* The type of expression must be boolean */
- if (TREE_TYPE (expression) != boolean_type_node)
- {
- parse_error_context
- (wfl_operator,
- "Incompatible type for loop conditional. Can't convert `%s' to `boolean'",
- lang_printable_name (TREE_TYPE (expression), 0));
- return error_mark_node;
- }
- /* Now we know things are allright, invert the condition, fold and
- return */
- TREE_OPERAND (node, 0) =
- fold (build1 (TRUTH_NOT_EXPR, boolean_type_node, expression));
-
- if (! integer_zerop (TREE_OPERAND (node, 0))
- && ctxp->current_loop != NULL_TREE
- && TREE_CODE (ctxp->current_loop) == LOOP_EXPR)
- CAN_COMPLETE_NORMALLY (ctxp->current_loop) = 1;
- if (! integer_onep (TREE_OPERAND (node, 0)))
- CAN_COMPLETE_NORMALLY (node) = 1;
-
-
- TREE_TYPE (node) = void_type_node;
- return node;
-}
-
-/* 14.9 Switch statement */
-
-static tree
-patch_switch_statement (node)
- tree node;
-{
- tree se = TREE_OPERAND (node, 0), se_type;
- tree save, iter;
-
- /* Complete the switch expression */
- se = TREE_OPERAND (node, 0) = java_complete_tree (se);
- se_type = TREE_TYPE (se);
- /* The type of the switch expression must be char, byte, short or
- int */
- if (! JINTEGRAL_TYPE_P (se_type) || se_type == long_type_node)
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
- parse_error_context (wfl_operator,
- "Incompatible type for `switch'. Can't convert `%s' to `int'",
- lang_printable_name (se_type, 0));
- /* This is what java_complete_tree will check */
- TREE_OPERAND (node, 0) = error_mark_node;
- return error_mark_node;
- }
-
- /* Save and restore the outer case label list. */
- save = case_label_list;
- case_label_list = NULL_TREE;
-
- TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
-
- /* See if we've found a duplicate label. We can't leave this until
- code generation, because in `--syntax-only' and `-C' modes we
- don't do ordinary code generation. */
- for (iter = case_label_list; iter != NULL_TREE; iter = TREE_CHAIN (iter))
- {
- HOST_WIDE_INT val = TREE_INT_CST_LOW (TREE_VALUE (iter));
- tree subiter;
- for (subiter = TREE_CHAIN (iter);
- subiter != NULL_TREE;
- subiter = TREE_CHAIN (subiter))
- {
- HOST_WIDE_INT subval = TREE_INT_CST_LOW (TREE_VALUE (subiter));
- if (val == subval)
- {
- EXPR_WFL_LINECOL (wfl_operator)
- = EXPR_WFL_LINECOL (TREE_PURPOSE (iter));
- /* The case_label_list is in reverse order, so print the
- outer label first. */
- parse_error_context (wfl_operator, "duplicate case label: `"
- HOST_WIDE_INT_PRINT_DEC "'", subval);
- EXPR_WFL_LINECOL (wfl_operator)
- = EXPR_WFL_LINECOL (TREE_PURPOSE (subiter));
- parse_error_context (wfl_operator, "original label is here");
-
- break;
- }
- }
- }
-
- case_label_list = save;
-
- /* Ready to return */
- if (TREE_CODE (TREE_OPERAND (node, 1)) == ERROR_MARK)
- {
- TREE_TYPE (node) = error_mark_node;
- return error_mark_node;
- }
- TREE_TYPE (node) = void_type_node;
- TREE_SIDE_EFFECTS (node) = 1;
- CAN_COMPLETE_NORMALLY (node)
- = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1))
- || ! SWITCH_HAS_DEFAULT (node);
- return node;
-}
-
-/* 14.18 The try/catch statements */
-
-/* Encapsulate TRY_STMTS' in a try catch sequence. The catch clause
- catches TYPE and executes CATCH_STMTS. */
-
-static tree
-encapsulate_with_try_catch (location, type, try_stmts, catch_stmts)
- int location;
- tree type, try_stmts, catch_stmts;
-{
- tree try_block, catch_clause_param, catch_block, catch;
-
- /* First build a try block */
- try_block = build_expr_block (try_stmts, NULL_TREE);
-
- /* Build a catch block: we need a catch clause parameter */
- catch_clause_param = build_decl (VAR_DECL,
- wpv_id, build_pointer_type (type));
- /* And a block */
- catch_block = build_expr_block (NULL_TREE, catch_clause_param);
-
- /* Initialize the variable and store in the block */
- catch = build (MODIFY_EXPR, NULL_TREE, catch_clause_param,
- build (JAVA_EXC_OBJ_EXPR, ptr_type_node));
- add_stmt_to_block (catch_block, NULL_TREE, catch);
-
- /* Add the catch statements */
- add_stmt_to_block (catch_block, NULL_TREE, catch_stmts);
-
- /* Now we can build a CATCH_EXPR */
- catch_block = build1 (CATCH_EXPR, NULL_TREE, catch_block);
-
- return build_try_statement (location, try_block, catch_block);
-}
-
-static tree
-build_try_statement (location, try_block, catches)
- int location;
- tree try_block, catches;
-{
- tree node = build (TRY_EXPR, NULL_TREE, try_block, catches);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-}
-
-static tree
-build_try_finally_statement (location, try_block, finally)
- int location;
- tree try_block, finally;
-{
- tree node = build (TRY_FINALLY_EXPR, NULL_TREE, try_block, finally);
- EXPR_WFL_LINECOL (node) = location;
- return node;
-}
-
-static tree
-patch_try_statement (node)
- tree node;
-{
- int error_found = 0;
- tree try = TREE_OPERAND (node, 0);
- /* Exception handlers are considered in left to right order */
- tree catch = nreverse (TREE_OPERAND (node, 1));
- tree current, caught_type_list = NULL_TREE;
-
- /* Check catch clauses, if any. Every time we find an error, we try
- to process the next catch clause. We process the catch clause before
- the try block so that when processing the try block we can check thrown
- exceptions againts the caught type list. */
- for (current = catch; current; current = TREE_CHAIN (current))
- {
- tree carg_decl, carg_type;
- tree sub_current, catch_block, catch_clause;
- int unreachable;
-
- /* At this point, the structure of the catch clause is
- CATCH_EXPR (catch node)
- BLOCK (with the decl of the parameter)
- COMPOUND_EXPR
- MODIFY_EXPR (assignment of the catch parameter)
- BLOCK (catch clause block)
- */
- catch_clause = TREE_OPERAND (current, 0);
- carg_decl = BLOCK_EXPR_DECLS (catch_clause);
- carg_type = TREE_TYPE (TREE_TYPE (carg_decl));
-
- /* Catch clauses can't have more than one parameter declared,
- but it's already enforced by the grammar. Make sure that the
- only parameter of the clause statement in of class Throwable
- or a subclass of Throwable, but that was done earlier. The
- catch clause parameter type has also been resolved. */
-
- /* Just make sure that the catch clause parameter type inherits
- from java.lang.Throwable */
- if (!inherits_from_p (carg_type, throwable_type_node))
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current);
- parse_error_context (wfl_operator,
- "Can't catch class `%s'. Catch clause parameter type must be a subclass of class `java.lang.Throwable'",
- lang_printable_name (carg_type, 0));
- error_found = 1;
- continue;
- }
-
- /* Partial check for unreachable catch statement: The catch
- clause is reachable iff is no earlier catch block A in
- the try statement such that the type of the catch
- clause's parameter is the same as or a subclass of the
- type of A's parameter */
- unreachable = 0;
- for (sub_current = catch;
- sub_current != current; sub_current = TREE_CHAIN (sub_current))
- {
- tree sub_catch_clause, decl;
- sub_catch_clause = TREE_OPERAND (sub_current, 0);
- decl = BLOCK_EXPR_DECLS (sub_catch_clause);
-
- if (inherits_from_p (carg_type, TREE_TYPE (TREE_TYPE (decl))))
- {
- EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current);
- parse_error_context
- (wfl_operator,
- "`catch' not reached because of the catch clause at line %d",
- EXPR_WFL_LINENO (sub_current));
- unreachable = error_found = 1;
- break;
- }
- }
- /* Complete the catch clause block */
- catch_block = java_complete_tree (TREE_OPERAND (current, 0));
- if (catch_block == error_mark_node)
- {
- error_found = 1;
- continue;
- }
- if (CAN_COMPLETE_NORMALLY (catch_block))
- CAN_COMPLETE_NORMALLY (node) = 1;
- TREE_OPERAND (current, 0) = catch_block;
-
- if (unreachable)
- continue;
-
- /* Things to do here: the exception must be thrown */
-
- /* Link this type to the caught type list */
- caught_type_list = tree_cons (NULL_TREE, carg_type, caught_type_list);
- }
-
- PUSH_EXCEPTIONS (caught_type_list);
- if ((try = java_complete_tree (try)) == error_mark_node)
- error_found = 1;
- if (CAN_COMPLETE_NORMALLY (try))
- CAN_COMPLETE_NORMALLY (node) = 1;
- POP_EXCEPTIONS ();
-
- /* Verification ends here */
- if (error_found)
- return error_mark_node;
-
- TREE_OPERAND (node, 0) = try;
- TREE_OPERAND (node, 1) = catch;
- TREE_TYPE (node) = void_type_node;
- return node;
-}
-
-/* 14.17 The synchronized Statement */
-
-static tree
-patch_synchronized_statement (node, wfl_op1)
- tree node, wfl_op1;
-{
- tree expr = java_complete_tree (TREE_OPERAND (node, 0));
- tree block = TREE_OPERAND (node, 1);
-
- tree tmp, enter, exit, expr_decl, assignment;
-
- if (expr == error_mark_node)
- {
- block = java_complete_tree (block);
- return expr;
- }
-
- /* We might be trying to synchronize on a STRING_CST */
- if ((tmp = patch_string (expr)))
- expr = tmp;
-
- /* The TYPE of expr must be a reference type */
- if (!JREFERENCE_TYPE_P (TREE_TYPE (expr)))
- {
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
- parse_error_context (wfl_operator, "Incompatible type for `synchronized'. Can't convert `%s' to `java.lang.Object'",
- lang_printable_name (TREE_TYPE (expr), 0));
- return error_mark_node;
- }
-
- if (flag_emit_xref)
- {
- TREE_OPERAND (node, 0) = expr;
- TREE_OPERAND (node, 1) = java_complete_tree (block);
- CAN_COMPLETE_NORMALLY (node) = 1;
- return node;
- }
-
- /* Generate a try-finally for the synchronized statement, except
- that the handler that catches all throw exception calls
- _Jv_MonitorExit and then rethrow the exception.
- The synchronized statement is then implemented as:
- TRY
- {
- _Jv_MonitorEnter (expression)
- synchronized_block
- _Jv_MonitorExit (expression)
- }
- CATCH_ALL
- {
- e = _Jv_exception_info ();
- _Jv_MonitorExit (expression)
- Throw (e);
- } */
-
- expr_decl = build_decl (VAR_DECL, generate_name (), TREE_TYPE (expr));
- BUILD_MONITOR_ENTER (enter, expr_decl);
- BUILD_MONITOR_EXIT (exit, expr_decl);
- CAN_COMPLETE_NORMALLY (enter) = 1;
- CAN_COMPLETE_NORMALLY (exit) = 1;
- assignment = build (MODIFY_EXPR, NULL_TREE, expr_decl, expr);
- TREE_SIDE_EFFECTS (assignment) = 1;
- node = build (COMPOUND_EXPR, NULL_TREE,
- build (COMPOUND_EXPR, NULL_TREE, assignment, enter),
- build (TRY_FINALLY_EXPR, NULL_TREE, block, exit));
- node = build_expr_block (node, expr_decl);
-
- return java_complete_tree (node);
-}
-
-/* 14.16 The throw Statement */
-
-static tree
-patch_throw_statement (node, wfl_op1)
- tree node, wfl_op1;
-{
- tree expr = TREE_OPERAND (node, 0);
- tree type = TREE_TYPE (expr);
- int unchecked_ok = 0, tryblock_throws_ok = 0;
-
- /* Thrown expression must be assignable to java.lang.Throwable */
- if (!try_reference_assignconv (throwable_type_node, expr))
- {
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
- parse_error_context (wfl_operator,
- "Can't throw `%s'; it must be a subclass of class `java.lang.Throwable'",
- lang_printable_name (type, 0));
- /* If the thrown expression was a reference, we further the
- compile-time check. */
- if (!JREFERENCE_TYPE_P (type))
- return error_mark_node;
- }
-
- /* At least one of the following must be true */
-
- /* The type of the throw expression is a not checked exception,
- i.e. is a unchecked expression. */
- unchecked_ok = IS_UNCHECKED_EXCEPTION_P (TREE_TYPE (type));
-
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
- /* An instance can't throw a checked exception unless that exception
- is explicitly declared in the `throws' clause of each
- constructor. This doesn't apply to anonymous classes, since they
- don't have declared constructors. */
- if (!unchecked_ok
- && DECL_INSTINIT_P (current_function_decl)
- && !ANONYMOUS_CLASS_P (current_class))
- {
- tree current;
- for (current = TYPE_METHODS (current_class); current;
- current = TREE_CHAIN (current))
- if (DECL_CONSTRUCTOR_P (current)
- && !check_thrown_exceptions_do (TREE_TYPE (expr)))
- {
- parse_error_context (wfl_operator, "Checked exception `%s' can't be thrown in instance initializer (not all declared constructor are declaring it in their `throws' clause)",
- lang_printable_name (TREE_TYPE (expr), 0));
- return error_mark_node;
- }
- }
-
- /* Throw is contained in a try statement and at least one catch
- clause can receive the thrown expression or the current method is
- declared to throw such an exception. Or, the throw statement is
- contained in a method or constructor declaration and the type of
- the Expression is assignable to at least one type listed in the
- throws clause the declaration. */
- if (!unchecked_ok)
- tryblock_throws_ok = check_thrown_exceptions_do (TREE_TYPE (expr));
- if (!(unchecked_ok || tryblock_throws_ok))
- {
- /* If there is a surrounding try block that has no matching
- clatch clause, report it first. A surrounding try block exits
- only if there is something after the list of checked
- exception thrown by the current function (if any). */
- if (IN_TRY_BLOCK_P ())
- parse_error_context (wfl_operator, "Checked exception `%s' can't be caught by any of the catch clause(s) of the surrounding `try' block",
- lang_printable_name (type, 0));
- /* If we have no surrounding try statement and the method doesn't have
- any throws, report it now. FIXME */
-
- /* We report that the exception can't be throw from a try block
- in all circumstances but when the `throw' is inside a static
- block. */
- else if (!EXCEPTIONS_P (currently_caught_type_list)
- && !tryblock_throws_ok)
- {
- if (DECL_CLINIT_P (current_function_decl))
- parse_error_context (wfl_operator,
- "Checked exception `%s' can't be thrown in initializer",
- lang_printable_name (type, 0));
- else
- parse_error_context (wfl_operator,
- "Checked exception `%s' isn't thrown from a `try' block",
- lang_printable_name (type, 0));
- }
- /* Otherwise, the current method doesn't have the appropriate
- throws declaration */
- else
- parse_error_context (wfl_operator, "Checked exception `%s' doesn't match any of current method's `throws' declaration(s)",
- lang_printable_name (type, 0));
- return error_mark_node;
- }
-
- if (! flag_emit_class_files && ! flag_emit_xref)
- BUILD_THROW (node, expr);
-
- /* If doing xrefs, keep the location where the `throw' was seen. */
- if (flag_emit_xref)
- EXPR_WFL_LINECOL (node) = EXPR_WFL_LINECOL (wfl_op1);
- return node;
-}
-
-/* Check that exception said to be thrown by method DECL can be
- effectively caught from where DECL is invoked. */
-
-static void
-check_thrown_exceptions (location, decl)
- int location;
- tree decl;
-{
- tree throws;
- /* For all the unchecked exceptions thrown by DECL */
- for (throws = DECL_FUNCTION_THROWS (decl); throws;
- throws = TREE_CHAIN (throws))
- if (!check_thrown_exceptions_do (TREE_VALUE (throws)))
- {
-#if 1
- /* Temporary hack to suppresses errors about cloning arrays. FIXME */
- if (DECL_NAME (decl) == get_identifier ("clone"))
- continue;
-#endif
- EXPR_WFL_LINECOL (wfl_operator) = location;
- if (DECL_FINIT_P (current_function_decl))
- parse_error_context
- (wfl_operator, "Exception `%s' can't be thrown in initializer",
- lang_printable_name (TREE_VALUE (throws), 0));
- else
- {
- parse_error_context
- (wfl_operator, "Exception `%s' must be caught, or it must be declared in the `throws' clause of `%s'",
- lang_printable_name (TREE_VALUE (throws), 0),
- (DECL_INIT_P (current_function_decl) ?
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))) :
- IDENTIFIER_POINTER (DECL_NAME (current_function_decl))));
- }
- }
-}
-
-/* Return 1 if checked EXCEPTION is caught at the current nesting level of
- try-catch blocks, OR is listed in the `throws' clause of the
- current method. */
-
-static int
-check_thrown_exceptions_do (exception)
- tree exception;
-{
- tree list = currently_caught_type_list;
- resolve_and_layout (exception, NULL_TREE);
- /* First, all the nested try-catch-finally at that stage. The
- last element contains `throws' clause exceptions, if any. */
- if (IS_UNCHECKED_EXCEPTION_P (exception))
- return 1;
- while (list)
- {
- tree caught;
- for (caught = TREE_VALUE (list); caught; caught = TREE_CHAIN (caught))
- if (valid_ref_assignconv_cast_p (exception, TREE_VALUE (caught), 0))
- return 1;
- list = TREE_CHAIN (list);
- }
- return 0;
-}
-
-static void
-purge_unchecked_exceptions (mdecl)
- tree mdecl;
-{
- tree throws = DECL_FUNCTION_THROWS (mdecl);
- tree new = NULL_TREE;
-
- while (throws)
- {
- tree next = TREE_CHAIN (throws);
- if (!IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (throws)))
- {
- TREE_CHAIN (throws) = new;
- new = throws;
- }
- throws = next;
- }
- /* List is inverted here, but it doesn't matter */
- DECL_FUNCTION_THROWS (mdecl) = new;
-}
-
-/* This function goes over all of CLASS_TYPE ctors and checks whether
- each of them features at least one unchecked exception in its
- `throws' clause. If it's the case, it returns `true', `false'
- otherwise. */
-
-static bool
-ctors_unchecked_throws_clause_p (class_type)
- tree class_type;
-{
- tree current;
-
- for (current = TYPE_METHODS (class_type); current;
- current = TREE_CHAIN (current))
- {
- bool ctu = false; /* Ctor Throws Unchecked */
- if (DECL_CONSTRUCTOR_P (current))
- {
- tree throws;
- for (throws = DECL_FUNCTION_THROWS (current); throws && !ctu;
- throws = TREE_CHAIN (throws))
- if (inherits_from_p (TREE_VALUE (throws), exception_type_node))
- ctu = true;
- }
- /* We return false as we found one ctor that is unfit. */
- if (!ctu && DECL_CONSTRUCTOR_P (current))
- return false;
- }
- /* All ctors feature at least one unchecked exception in their
- `throws' clause. */
- return true;
-}
-
-/* 15.24 Conditional Operator ?: */
-
-static tree
-patch_conditional_expr (node, wfl_cond, wfl_op1)
- tree node, wfl_cond, wfl_op1;
-{
- tree cond = TREE_OPERAND (node, 0);
- tree op1 = TREE_OPERAND (node, 1);
- tree op2 = TREE_OPERAND (node, 2);
- tree resulting_type = NULL_TREE;
- tree t1, t2, patched;
- int error_found = 0;
-
- /* Operands of ?: might be StringBuffers crafted as a result of a
- string concatenation. Obtain a descent operand here. */
- if ((patched = patch_string (op1)))
- TREE_OPERAND (node, 1) = op1 = patched;
- if ((patched = patch_string (op2)))
- TREE_OPERAND (node, 2) = op2 = patched;
-
- t1 = TREE_TYPE (op1);
- t2 = TREE_TYPE (op2);
-
- /* The first expression must be a boolean */
- if (TREE_TYPE (cond) != boolean_type_node)
- {
- SET_WFL_OPERATOR (wfl_operator, node, wfl_cond);
- parse_error_context (wfl_operator,
- "Incompatible type for `?:'. Can't convert `%s' to `boolean'",
- lang_printable_name (TREE_TYPE (cond), 0));
- error_found = 1;
- }
-
- /* Second and third can be numeric, boolean (i.e. primitive),
- references or null. Anything else results in an error */
- if (!((JNUMERIC_TYPE_P (t1) && JNUMERIC_TYPE_P (t2))
- || ((JREFERENCE_TYPE_P (t1) || op1 == null_pointer_node)
- && (JREFERENCE_TYPE_P (t2) || op2 == null_pointer_node))
- || (t1 == boolean_type_node && t2 == boolean_type_node)))
- error_found = 1;
-
- /* Determine the type of the conditional expression. Same types are
- easy to deal with */
- else if (t1 == t2)
- resulting_type = t1;
-
- /* There are different rules for numeric types */
- else if (JNUMERIC_TYPE_P (t1))
- {
- /* if byte/short found, the resulting type is short */
- if ((t1 == byte_type_node && t2 == short_type_node)
- || (t1 == short_type_node && t2 == byte_type_node))
- resulting_type = short_type_node;
-
- /* If t1 is a constant int and t2 is of type byte, short or char
- and t1's value fits in t2, then the resulting type is t2 */
- else if ((t1 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 1)))
- && JBSC_TYPE_P (t2) && int_fits_type_p (TREE_OPERAND (node, 1), t2))
- resulting_type = t2;
-
- /* If t2 is a constant int and t1 is of type byte, short or char
- and t2's value fits in t1, then the resulting type is t1 */
- else if ((t2 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 2)))
- && JBSC_TYPE_P (t1) && int_fits_type_p (TREE_OPERAND (node, 2), t1))
- resulting_type = t1;
-
- /* Otherwise, binary numeric promotion is applied and the
- resulting type is the promoted type of operand 1 and 2 */
- else
- resulting_type = binary_numeric_promotion (t1, t2,
- &TREE_OPERAND (node, 1),
- &TREE_OPERAND (node, 2));
- }
-
- /* Cases of a reference and a null type */
- else if (JREFERENCE_TYPE_P (t1) && op2 == null_pointer_node)
- resulting_type = t1;
-
- else if (JREFERENCE_TYPE_P (t2) && op1 == null_pointer_node)
- resulting_type = t2;
-
- /* Last case: different reference types. If a type can be converted
- into the other one by assignment conversion, the latter
- determines the type of the expression */
- else if ((resulting_type = try_reference_assignconv (t1, op2)))
- resulting_type = promote_type (t1);
-
- else if ((resulting_type = try_reference_assignconv (t2, op1)))
- resulting_type = promote_type (t2);
-
- /* If we don't have any resulting type, we're in trouble */
- if (!resulting_type)
- {
- char *t = xstrdup (lang_printable_name (t1, 0));
- SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
- parse_error_context (wfl_operator,
- "Incompatible type for `?:'. Can't convert `%s' to `%s'",
- t, lang_printable_name (t2, 0));
- free (t);
- error_found = 1;
- }
-
- if (error_found)
- {
- TREE_TYPE (node) = error_mark_node;
- return error_mark_node;
- }
-
- TREE_TYPE (node) = resulting_type;
- TREE_SET_CODE (node, COND_EXPR);
- CAN_COMPLETE_NORMALLY (node) = 1;
- return node;
-}
-
-/* Wrap EXPR with code to initialize DECL's class, if appropriate. */
-
-static tree
-maybe_build_class_init_for_field (decl, expr)
- tree decl, expr;
-{
- tree clas = DECL_CONTEXT (decl);
- if (flag_emit_class_files || flag_emit_xref)
- return expr;
-
- if (TREE_CODE (decl) == VAR_DECL && FIELD_STATIC (decl)
- && FIELD_FINAL (decl))
- {
- tree init = DECL_INITIAL (decl);
- if (init != NULL_TREE)
- init = fold_constant_for_init (init, decl);
- if (init != NULL_TREE && CONSTANT_VALUE_P (init))
- return expr;
- }
-
- return build_class_init (clas, expr);
-}
-
-/* Try to constant fold NODE.
- If NODE is not a constant expression, return NULL_EXPR.
- CONTEXT is a static final VAR_DECL whose initializer we are folding. */
-
-static tree
-fold_constant_for_init (node, context)
- tree node;
- tree context;
-{
- tree op0, op1, val;
- enum tree_code code = TREE_CODE (node);
-
- switch (code)
- {
- case STRING_CST:
- case INTEGER_CST:
- case REAL_CST:
- return node;
-
- case PLUS_EXPR:
- case MINUS_EXPR:
- case MULT_EXPR:
- case TRUNC_MOD_EXPR:
- case RDIV_EXPR:
- case LSHIFT_EXPR:
- case RSHIFT_EXPR:
- case URSHIFT_EXPR:
- case BIT_AND_EXPR:
- case BIT_XOR_EXPR:
- case BIT_IOR_EXPR:
- case TRUTH_ANDIF_EXPR:
- case TRUTH_ORIF_EXPR:
- case EQ_EXPR:
- case NE_EXPR:
- case GT_EXPR:
- case GE_EXPR:
- case LT_EXPR:
- case LE_EXPR:
- op0 = TREE_OPERAND (node, 0);
- op1 = TREE_OPERAND (node, 1);
- val = fold_constant_for_init (op0, context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 0) = val;
- val = fold_constant_for_init (op1, context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 1) = val;
- return patch_binop (node, op0, op1);
-
- case UNARY_PLUS_EXPR:
- case NEGATE_EXPR:
- case TRUTH_NOT_EXPR:
- case BIT_NOT_EXPR:
- case CONVERT_EXPR:
- op0 = TREE_OPERAND (node, 0);
- val = fold_constant_for_init (op0, context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 0) = val;
- return patch_unaryop (node, op0);
- break;
-
- case COND_EXPR:
- val = fold_constant_for_init (TREE_OPERAND (node, 0), context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 0) = val;
- val = fold_constant_for_init (TREE_OPERAND (node, 1), context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 1) = val;
- val = fold_constant_for_init (TREE_OPERAND (node, 2), context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 2) = val;
- return integer_zerop (TREE_OPERAND (node, 0)) ? TREE_OPERAND (node, 1)
- : TREE_OPERAND (node, 2);
-
- case VAR_DECL:
- case FIELD_DECL:
- if (! FIELD_FINAL (node)
- || DECL_INITIAL (node) == NULL_TREE)
- return NULL_TREE;
- val = DECL_INITIAL (node);
- /* Guard against infinite recursion. */
- DECL_INITIAL (node) = NULL_TREE;
- val = fold_constant_for_init (val, node);
- DECL_INITIAL (node) = val;
- return val;
-
- case EXPR_WITH_FILE_LOCATION:
- /* Compare java_complete_tree and resolve_expression_name. */
- if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */
- || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE)
- {
- tree name = EXPR_WFL_NODE (node);
- tree decl;
- if (PRIMARY_P (node))
- return NULL_TREE;
- else if (! QUALIFIED_P (name))
- {
- decl = lookup_field_wrapper (DECL_CONTEXT (context), name);
- if (decl == NULL_TREE
- || (! FIELD_STATIC (decl) && ! FIELD_FINAL (decl)))
- return NULL_TREE;
- return fold_constant_for_init (decl, decl);
- }
- else
- {
- /* Install the proper context for the field resolution.
- The prior context is restored once the name is
- properly qualified. */
- tree saved_current_class = current_class;
- /* Wait until the USE_COMPONENT_REF re-write. FIXME. */
- current_class = DECL_CONTEXT (context);
- qualify_ambiguous_name (node);
- current_class = saved_current_class;
- if (resolve_field_access (node, &decl, NULL)
- && decl != NULL_TREE)
- return fold_constant_for_init (decl, decl);
- return NULL_TREE;
- }
- }
- else
- {
- op0 = TREE_OPERAND (node, 0);
- val = fold_constant_for_init (op0, context);
- if (val == NULL_TREE || ! TREE_CONSTANT (val))
- return NULL_TREE;
- TREE_OPERAND (node, 0) = val;
- return val;
- }
-
-#ifdef USE_COMPONENT_REF
- case IDENTIFIER:
- case COMPONENT_REF:
- ?;
-#endif
-
- default:
- return NULL_TREE;
- }
-}
-
-#ifdef USE_COMPONENT_REF
-/* Context is 'T' for TypeName, 'P' for PackageName,
- 'M' for MethodName, 'E' for ExpressionName, and 'A' for AmbiguousName. */
-
-tree
-resolve_simple_name (name, context)
- tree name;
- int context;
-{
-}
-
-tree
-resolve_qualified_name (name, context)
- tree name;
- int context;
-{
-}
-#endif
-
-/* Mark P, which is really a `struct parser_ctxt **' for GC. */
-
-static void
-mark_parser_ctxt (p)
- void *p;
-{
- struct parser_ctxt *pc = *((struct parser_ctxt **) p);
- int i;
-
- if (!pc)
- return;
-
-#ifndef JC1_LITE
- for (i = 0; i < 11; ++i)
- ggc_mark_tree (pc->modifier_ctx[i]);
- ggc_mark_tree (pc->class_type);
- ggc_mark_tree (pc->function_decl);
- ggc_mark_tree (pc->package);
- ggc_mark_tree (pc->class_list);
- ggc_mark_tree (pc->current_parsed_class);
- ggc_mark_tree (pc->current_parsed_class_un);
- ggc_mark_tree (pc->non_static_initialized);
- ggc_mark_tree (pc->static_initialized);
- ggc_mark_tree (pc->instance_initializers);
- ggc_mark_tree (pc->import_list);
- ggc_mark_tree (pc->import_demand_list);
- ggc_mark_tree (pc->current_loop);
- ggc_mark_tree (pc->current_labeled_block);
-#endif /* JC1_LITE */
-
- if (pc->next)
- mark_parser_ctxt (&pc->next);
-}
-
-void
-init_src_parse ()
-{
- /* Register roots with the garbage collector. */
- ggc_add_tree_root (src_parse_roots, sizeof (src_parse_roots) / sizeof(tree));
-
- /* Sanity check; we've been bit by this before. */
- if (sizeof (ctxp->modifier_ctx) / sizeof (tree) !=
- MODIFIER_TK - PUBLIC_TK)
- abort ();
-}
-
-\f
-
-/* This section deals with the functions that are called when tables
- recording class initialization information are traversed. */
-
-/* Attach to PTR (a block) the declaration found in ENTRY. */
-
-static bool
-attach_init_test_initialization_flags (entry, ptr)
- struct hash_entry *entry;
- PTR ptr;
-{
- tree block = (tree)ptr;
- struct init_test_hash_entry *ite = (struct init_test_hash_entry *) entry;
-
- TREE_CHAIN (ite->init_test_decl) = BLOCK_EXPR_DECLS (block);
- BLOCK_EXPR_DECLS (block) = ite->init_test_decl;
- return true;
-}
-
-/* This function is called for each classes that is known definitely
- assigned when a given static method was called. This function
- augments a compound expression (INFO) storing all assignment to
- initialized static class flags if a flag already existed, otherwise
- a new one is created. */
-
-static bool
-emit_test_initialization (entry, info)
- struct hash_entry *entry;
- PTR info;
-{
- tree l = (tree) info;
- tree decl, init;
-
- struct init_test_hash_entry *ite = (struct init_test_hash_entry *)
- hash_lookup (&DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl),
- entry->key,
- current_function_decl != TREE_PURPOSE (l), NULL);
-
- /* If we haven't found a flag and we're dealing with self registered
- with current_function_decl, then don't do anything. Self is
- always added as definitely initialized but this information is
- valid only if used outside the current function. */
- if (! ite)
- return true;
-
- /* If we don't have a variable, create one and install it. */
- if (! ite->init_test_decl)
- {
- tree block;
-
- decl = build_decl (VAR_DECL, NULL_TREE, boolean_type_node);
- MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
- LOCAL_CLASS_INITIALIZATION_FLAG (decl) = 1;
- DECL_CONTEXT (decl) = current_function_decl;
- DECL_INITIAL (decl) = boolean_true_node;
-
- /* The trick is to find the right context for it. */
- block = BLOCK_SUBBLOCKS (GET_CURRENT_BLOCK (current_function_decl));
- TREE_CHAIN (decl) = BLOCK_EXPR_DECLS (block);
- BLOCK_EXPR_DECLS (block) = decl;
- ite->init_test_decl = decl;
- }
- else
- decl = ite->init_test_decl;
-
- /* Now simply augment the compound that holds all the assignments
- pertaining to this method invocation. */
- init = build (MODIFY_EXPR, boolean_type_node, decl, boolean_true_node);
- TREE_SIDE_EFFECTS (init) = 1;
- TREE_VALUE (l) = add_stmt_to_compound (TREE_VALUE (l), void_type_node, init);
- TREE_SIDE_EFFECTS (TREE_VALUE (l)) = 1;
-
- return true;
-}
projects / msp430-gcc.git / blobdiff