+++ /dev/null
-/* Part of CPP library.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
-
-This program 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.
-
-This program 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 this program; if not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-/* This header defines all the internal data structures and functions
- that need to be visible across files. It's called cpphash.h for
- historical reasons. */
-
-#ifndef GCC_CPPHASH_H
-#define GCC_CPPHASH_H
-
-#include "hashtable.h"
-
-struct directive; /* Deliberately incomplete. */
-
-/* Test if a sign is valid within a preprocessing number. */
-#define VALID_SIGN(c, prevc) \
- (((c) == '+' || (c) == '-') && \
- ((prevc) == 'e' || (prevc) == 'E' \
- || (((prevc) == 'p' || (prevc) == 'P') \
- && CPP_OPTION (pfile, extended_numbers))))
-
-#define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
-#define CPP_BUFFER(PFILE) ((PFILE)->buffer)
-#define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base + (BUF)->col_adjust)
-#define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
-
-/* Maximum nesting of cpp_buffers. We use a static limit, partly for
- efficiency, and partly to limit runaway recursion. */
-#define CPP_STACK_MAX 200
-
-/* A generic memory buffer, and operations on it. */
-typedef struct _cpp_buff _cpp_buff;
-struct _cpp_buff
-{
- struct _cpp_buff *next;
- unsigned char *base, *cur, *limit;
-};
-
-extern _cpp_buff *_cpp_get_buff PARAMS ((cpp_reader *, size_t));
-extern void _cpp_release_buff PARAMS ((cpp_reader *, _cpp_buff *));
-extern void _cpp_extend_buff PARAMS ((cpp_reader *, _cpp_buff **, size_t));
-extern _cpp_buff *_cpp_append_extend_buff PARAMS ((cpp_reader *, _cpp_buff *,
- size_t));
-extern void _cpp_free_buff PARAMS ((_cpp_buff *));
-extern unsigned char *_cpp_aligned_alloc PARAMS ((cpp_reader *, size_t));
-extern unsigned char *_cpp_unaligned_alloc PARAMS ((cpp_reader *, size_t));
-
-#define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
-#define BUFF_FRONT(BUFF) ((BUFF)->cur)
-#define BUFF_LIMIT(BUFF) ((BUFF)->limit)
-
-/* List of directories to look for include files in. */
-struct search_path
-{
- struct search_path *next;
-
- /* NOTE: NAME may not be null terminated for the case of the current
- file's directory! */
- const char *name;
- unsigned int len;
- /* We use these to tell if the directory mentioned here is a duplicate
- of an earlier directory on the search path. */
- ino_t ino;
- dev_t dev;
- /* Non-zero if it is a system include directory. */
- int sysp;
- /* Mapping of file names for this directory. Only used on MS-DOS
- and related platforms. */
- struct file_name_map *name_map;
-};
-
-/* #include types. */
-enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
-
-union utoken
-{
- const cpp_token *token;
- const cpp_token **ptoken;
-};
-
-/* A "run" of tokens; part of a chain of runs. */
-typedef struct tokenrun tokenrun;
-struct tokenrun
-{
- tokenrun *next, *prev;
- cpp_token *base, *limit;
-};
-
-typedef struct cpp_context cpp_context;
-struct cpp_context
-{
- /* Doubly-linked list. */
- cpp_context *next, *prev;
-
- /* Contexts other than the base context are contiguous tokens.
- e.g. macro expansions, expanded argument tokens. */
- union utoken first;
- union utoken last;
-
- /* If non-NULL, a buffer used for storage related to this context.
- When the context is popped, the buffer is released. */
- _cpp_buff *buff;
-
- /* For a macro context, the macro node, otherwise NULL. */
- cpp_hashnode *macro;
-
- /* True if utoken element is token, else ptoken. */
- bool direct_p;
-};
-
-struct lexer_state
-{
- /* Nonzero if first token on line is CPP_HASH. */
- unsigned char in_directive;
-
- /* True if we are skipping a failed conditional group. */
- unsigned char skipping;
-
- /* Nonzero if in a directive that takes angle-bracketed headers. */
- unsigned char angled_headers;
-
- /* Nonzero to save comments. Turned off if discard_comments, and in
- all directives apart from #define. */
- unsigned char save_comments;
-
- /* Nonzero if we're mid-comment. */
- unsigned char lexing_comment;
-
- /* Nonzero if lexing __VA_ARGS__ is valid. */
- unsigned char va_args_ok;
-
- /* Nonzero if lexing poisoned identifiers is valid. */
- unsigned char poisoned_ok;
-
- /* Nonzero to prevent macro expansion. */
- unsigned char prevent_expansion;
-
- /* Nonzero when parsing arguments to a function-like macro. */
- unsigned char parsing_args;
-};
-
-/* Special nodes - identifiers with predefined significance. */
-struct spec_nodes
-{
- cpp_hashnode *n_defined; /* defined operator */
- cpp_hashnode *n_true; /* C++ keyword true */
- cpp_hashnode *n_false; /* C++ keyword false */
- cpp_hashnode *n__STRICT_ANSI__; /* STDC_0_IN_SYSTEM_HEADERS */
- cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */
-};
-
-/* Represents the contents of a file cpplib has read in. */
-struct cpp_buffer
-{
- const unsigned char *cur; /* current position */
- const unsigned char *backup_to; /* if peeked character is not wanted */
- const unsigned char *rlimit; /* end of valid data */
- const unsigned char *line_base; /* start of current line */
-
- struct cpp_buffer *prev;
-
- const unsigned char *buf; /* Entire character buffer. */
-
- /* Pointer into the include table; non-NULL if this is a file
- buffer. Used for include_next and to record control macros. */
- struct include_file *inc;
-
- /* Value of if_stack at start of this file.
- Used to prohibit unmatched #endif (etc) in an include file. */
- struct if_stack *if_stack;
-
- /* Token column position adjustment owing to tabs in whitespace. */
- unsigned int col_adjust;
-
- /* Contains PREV_WHITE and/or AVOID_LPASTE. */
- unsigned char saved_flags;
-
- /* Because of the way the lexer works, -Wtrigraphs can sometimes
- warn twice for the same trigraph. This helps prevent that. */
- const unsigned char *last_Wtrigraphs;
-
- /* True if we have already warned about C++ comments in this file.
- The warning happens only for C89 extended mode with -pedantic on,
- or for -Wtraditional, and only once per file (otherwise it would
- be far too noisy). */
- unsigned char warned_cplusplus_comments;
-
- /* True if we don't process trigraphs and escaped newlines. True
- for preprocessed input, command line directives, and _Pragma
- buffers. */
- unsigned char from_stage3;
-
- /* Nonzero means that the directory to start searching for ""
- include files has been calculated and stored in "dir" below. */
- unsigned char search_cached;
-
- /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is
- true, a CPP_EOF token is then returned. Otherwise, the next
- token from the enclosing buffer is returned. */
- bool return_at_eof;
-
- /* The directory of the this buffer's file. Its NAME member is not
- allocated, so we don't need to worry about freeing it. */
- struct search_path dir;
-};
-
-/* A cpp_reader encapsulates the "state" of a pre-processor run.
- Applying cpp_get_token repeatedly yields a stream of pre-processor
- tokens. Usually, there is only one cpp_reader object active. */
-struct cpp_reader
-{
- /* Top of buffer stack. */
- cpp_buffer *buffer;
-
- /* Lexer state. */
- struct lexer_state state;
-
- /* Source line tracking. */
- struct line_maps line_maps;
- const struct line_map *map;
- unsigned int line;
-
- /* The line of the '#' of the current directive. */
- unsigned int directive_line;
-
- /* Memory buffers. */
- _cpp_buff *a_buff; /* Aligned permanent storage. */
- _cpp_buff *u_buff; /* Unaligned permanent storage. */
- _cpp_buff *free_buffs; /* Free buffer chain. */
-
- /* Context stack. */
- struct cpp_context base_context;
- struct cpp_context *context;
-
- /* If in_directive, the directive if known. */
- const struct directive *directive;
-
- /* Multiple inlcude optimisation. */
- const cpp_hashnode *mi_cmacro;
- const cpp_hashnode *mi_ind_cmacro;
- bool mi_valid;
-
- /* Lexing. */
- cpp_token *cur_token;
- tokenrun base_run, *cur_run;
- unsigned int lookaheads;
-
- /* Non-zero prevents the lexer from re-using the token runs. */
- unsigned int keep_tokens;
-
- /* Error counter for exit code. */
- unsigned int errors;
-
- /* Line and column where a newline was first seen in a string
- constant (multi-line strings). */
- unsigned int mls_line;
- unsigned int mls_col;
-
- /* Buffer to hold macro definition string. */
- unsigned char *macro_buffer;
- unsigned int macro_buffer_len;
-
- /* Tree of other included files. See cppfiles.c. */
- struct splay_tree_s *all_include_files;
-
- /* Current maximum length of directory names in the search path
- for include files. (Altered as we get more of them.) */
- unsigned int max_include_len;
-
- /* Date and time tokens. Calculated together if either is requested. */
- cpp_token date;
- cpp_token time;
-
- /* EOF token, and a token forcing paste avoidance. */
- cpp_token avoid_paste;
- cpp_token eof;
-
- /* Opaque handle to the dependencies of mkdeps.c. Used by -M etc. */
- struct deps *deps;
-
- /* Obstack holding all macro hash nodes. This never shrinks.
- See cpphash.c */
- struct obstack hash_ob;
-
- /* Obstack holding buffer and conditional structures. This is a
- real stack. See cpplib.c. */
- struct obstack buffer_ob;
-
- /* Pragma table - dynamic, because a library user can add to the
- list of recognized pragmas. */
- struct pragma_entry *pragmas;
-
- /* Call backs. */
- struct cpp_callbacks cb;
-
- /* Identifier hash table. */
- struct ht *hash_table;
-
- /* User visible options. */
- struct cpp_options opts;
-
- /* Special nodes - identifiers with predefined significance to the
- preprocessor. */
- struct spec_nodes spec_nodes;
-
- /* Whether to print our version number. Done this way so
- we don't get it twice for -v -version. */
- unsigned char print_version;
-
- /* Whether cpplib owns the hashtable. */
- unsigned char our_hashtable;
-};
-
-/* Character classes. Based on the more primitive macros in safe-ctype.h.
- If the definition of `numchar' looks odd to you, please look up the
- definition of a pp-number in the C standard [section 6.4.8 of C99].
-
- In the unlikely event that characters other than \r and \n enter
- the set is_vspace, the macro handle_newline() in cpplex.c must be
- updated. */
-#define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
-
-#define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x))
-#define is_numchar(x) ISIDNUM(x)
-#define is_idstart(x) (ISIDST(x) || _dollar_ok(x))
-#define is_numstart(x) ISDIGIT(x)
-#define is_hspace(x) ISBLANK(x)
-#define is_vspace(x) IS_VSPACE(x)
-#define is_nvspace(x) IS_NVSPACE(x)
-#define is_space(x) IS_SPACE_OR_NUL(x)
-
-/* This table is constant if it can be initialized at compile time,
- which is the case if cpp was compiled with GCC >=2.7, or another
- compiler that supports C99. */
-#if HAVE_DESIGNATED_INITIALIZERS
-extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
-#else
-extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
-#endif
-
-/* Macros. */
-
-#define CPP_PRINT_DEPS(PFILE) CPP_OPTION (PFILE, print_deps)
-#define CPP_IN_SYSTEM_HEADER(PFILE) ((PFILE)->map && (PFILE)->map->sysp)
-#define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
-#define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
-
-/* In cpperror.c */
-enum error_type { WARNING = 0, WARNING_SYSHDR, PEDWARN, ERROR, FATAL, ICE };
-extern int _cpp_begin_message PARAMS ((cpp_reader *, enum error_type,
- unsigned int, unsigned int));
-
-/* In cppmacro.c */
-extern void _cpp_free_definition PARAMS ((cpp_hashnode *));
-extern int _cpp_create_definition PARAMS ((cpp_reader *, cpp_hashnode *));
-extern void _cpp_pop_context PARAMS ((cpp_reader *));
-
-/* In cpphash.c */
-extern void _cpp_init_hashtable PARAMS ((cpp_reader *, hash_table *));
-extern void _cpp_destroy_hashtable PARAMS ((cpp_reader *));
-
-/* In cppfiles.c */
-extern void _cpp_fake_include PARAMS ((cpp_reader *, const char *));
-extern void _cpp_never_reread PARAMS ((struct include_file *));
-extern char *_cpp_simplify_pathname PARAMS ((char *));
-extern bool _cpp_read_file PARAMS ((cpp_reader *, const char *));
-extern bool _cpp_execute_include PARAMS ((cpp_reader *,
- const cpp_token *,
- enum include_type));
-extern int _cpp_compare_file_date PARAMS ((cpp_reader *,
- const cpp_token *));
-extern void _cpp_report_missing_guards PARAMS ((cpp_reader *));
-extern void _cpp_init_includes PARAMS ((cpp_reader *));
-extern void _cpp_cleanup_includes PARAMS ((cpp_reader *));
-extern bool _cpp_pop_file_buffer PARAMS ((cpp_reader *,
- struct include_file *));
-
-/* In cppexp.c */
-extern int _cpp_parse_expr PARAMS ((cpp_reader *));
-
-/* In cpplex.c */
-extern cpp_token *_cpp_temp_token PARAMS ((cpp_reader *));
-extern const cpp_token *_cpp_lex_token PARAMS ((cpp_reader *));
-extern cpp_token *_cpp_lex_direct PARAMS ((cpp_reader *));
-extern int _cpp_equiv_tokens PARAMS ((const cpp_token *,
- const cpp_token *));
-extern void _cpp_init_tokenrun PARAMS ((tokenrun *, unsigned int));
-
-/* In cppinit.c. */
-extern bool _cpp_push_next_buffer PARAMS ((cpp_reader *));
-
-/* In cpplib.c */
-extern int _cpp_test_assertion PARAMS ((cpp_reader *, int *));
-extern int _cpp_handle_directive PARAMS ((cpp_reader *, int));
-extern void _cpp_define_builtin PARAMS ((cpp_reader *, const char *));
-extern void _cpp_do__Pragma PARAMS ((cpp_reader *));
-extern void _cpp_init_directives PARAMS ((cpp_reader *));
-extern void _cpp_init_internal_pragmas PARAMS ((cpp_reader *));
-extern void _cpp_do_file_change PARAMS ((cpp_reader *, enum lc_reason,
- const char *,
- unsigned int, unsigned int));
-extern void _cpp_pop_buffer PARAMS ((cpp_reader *));
-
-/* Utility routines and macros. */
-#define DSC(str) (const U_CHAR *)str, sizeof str - 1
-#define xnew(T) (T *) xmalloc (sizeof(T))
-#define xcnew(T) (T *) xcalloc (1, sizeof(T))
-#define xnewvec(T, N) (T *) xmalloc (sizeof(T) * (N))
-#define xcnewvec(T, N) (T *) xcalloc (N, sizeof(T))
-#define xobnew(O, T) (T *) obstack_alloc (O, sizeof(T))
-
-/* These are inline functions instead of macros so we can get type
- checking. */
-typedef unsigned char U_CHAR;
-#define U (const U_CHAR *) /* Intended use: U"string" */
-
-static inline int ustrcmp PARAMS ((const U_CHAR *, const U_CHAR *));
-static inline int ustrncmp PARAMS ((const U_CHAR *, const U_CHAR *,
- size_t));
-static inline size_t ustrlen PARAMS ((const U_CHAR *));
-static inline U_CHAR *uxstrdup PARAMS ((const U_CHAR *));
-static inline U_CHAR *ustrchr PARAMS ((const U_CHAR *, int));
-static inline int ufputs PARAMS ((const U_CHAR *, FILE *));
-
-static inline int
-ustrcmp (s1, s2)
- const U_CHAR *s1, *s2;
-{
- return strcmp ((const char *)s1, (const char *)s2);
-}
-
-static inline int
-ustrncmp (s1, s2, n)
- const U_CHAR *s1, *s2;
- size_t n;
-{
- return strncmp ((const char *)s1, (const char *)s2, n);
-}
-
-static inline size_t
-ustrlen (s1)
- const U_CHAR *s1;
-{
- return strlen ((const char *)s1);
-}
-
-static inline U_CHAR *
-uxstrdup (s1)
- const U_CHAR *s1;
-{
- return (U_CHAR *) xstrdup ((const char *)s1);
-}
-
-static inline U_CHAR *
-ustrchr (s1, c)
- const U_CHAR *s1;
- int c;
-{
- return (U_CHAR *) strchr ((const char *)s1, c);
-}
-
-static inline int
-ufputs (s, f)
- const U_CHAR *s;
- FILE *f;
-{
- return fputs ((const char *)s, f);
-}
-
-#endif /* ! GCC_CPPHASH_H */
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