X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gcc%2Fada%2Fsem_util.ads;fp=gcc%2Fada%2Fsem_util.ads;h=0000000000000000000000000000000000000000;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=b4c9e45c8c7547258dd145bd169e29f0e9e68fba;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/ada/sem_util.ads b/gcc/ada/sem_util.ads deleted file mode 100644 index b4c9e45c..00000000 --- a/gcc/ada/sem_util.ads +++ /dev/null @@ -1,698 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- S E M _ U T I L -- --- -- --- S p e c -- --- -- --- $Revision: 1.3.10.1 $ --- -- --- Copyright (C) 1992-2001, Free Software Foundation, Inc. -- --- -- --- GNAT is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 2, or (at your option) any later ver- -- --- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- --- OUT 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 distributed with GNAT; see file COPYING. If not, write -- --- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- --- MA 02111-1307, USA. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- Package containing utility procedures used throughout the semantics - -with Einfo; use Einfo; -with Types; use Types; -with Uintp; use Uintp; -with Urealp; use Urealp; - -package Sem_Util is - - procedure Add_Access_Type_To_Process (E : Entity_Id; A : Entity_Id); - -- Add A to the list of access types to process when expanding the - -- freeze node of E. - - function Alignment_In_Bits (E : Entity_Id) return Uint; - -- If the alignment of the type or object E is currently known to the - -- compiler, then this function returns the alignment value in bits. - -- Otherwise Uint_0 is returned, indicating that the alignment of the - -- entity is not yet known to the compiler. - - procedure Apply_Compile_Time_Constraint_Error - (N : Node_Id; - Msg : String; - Ent : Entity_Id := Empty; - Typ : Entity_Id := Empty; - Loc : Source_Ptr := No_Location; - Rep : Boolean := True); - -- N is a subexpression which will raise constraint error when evaluated - -- at runtime. Msg is a message that explains the reason for raising the - -- exception. The last character is ? if the message is always a - -- warning, even in Ada 95, and is not a ? if the message represents an - -- illegality (because of violation of static expression rules) in Ada 95 - -- (but not in Ada 83). Typically this routine posts all messages at - -- the Sloc of node N. However, if Loc /= No_Location, Loc is the Sloc - -- used to output the message. After posting the appropriate message, - -- and if the flag Rep is set, this routine replaces the expression - -- with an N_Raise_Constraint_Error node. This node is then marked as - -- being static if the original node is static, but sets the flag - -- Raises_Constraint_Error, preventing further evaluation. - -- The error message may contain a } or & insertion character. - -- This normally references Etype (N), unless the Ent argument is given - -- explicitly, in which case it is used instead. The type of the raise - -- node that is built is normally Etype (N), but if the Typ parameter - -- is present, this is used instead. - - function Build_Actual_Subtype - (T : Entity_Id; - N : Node_Or_Entity_Id) - return Node_Id; - -- Build an anonymous subtype for an entity or expression, using the - -- bounds of the entity or the discriminants of the enclosing record. - -- T is the type for which the actual subtype is required, and N is either - -- a defining identifier, or any subexpression. - - function Build_Actual_Subtype_Of_Component - (T : Entity_Id; - N : Node_Id) - return Node_Id; - -- Determine whether a selected component has a type that depends on - -- discriminants, and build actual subtype for it if so. - - function Build_Discriminal_Subtype_Of_Component - (T : Entity_Id) - return Node_Id; - -- Determine whether a record component has a type that depends on - -- discriminants, and build actual subtype for it if so. - - procedure Build_Elaboration_Entity (N : Node_Id; Spec_Id : Entity_Id); - -- Given a compilation unit node N, allocate an elaboration boolean for - -- the compilation unit, and install it in the Elaboration_Entity field - -- of Spec_Id, the entity for the compilation unit. - - procedure Check_Fully_Declared (T : Entity_Id; N : Node_Id); - -- Verify that the full declaration of type T has been seen. If not, - -- place error message on node N. Used in object declarations, type - -- conversions, qualified expressions. - - procedure Check_Potentially_Blocking_Operation (N : Node_Id); - -- N is one of the statement forms that is a potentially blocking - -- operation. If it appears within a protected action, emit warning - -- and raise Program_Error. - - procedure Check_VMS (Construct : Node_Id); - -- Check that this the target is OpenVMS, and if so, return with - -- no effect, otherwise post an error noting this can only be used - -- with OpenVMS ports. The argument is the construct in question - -- and is used to post the error message. - - function Collect_Primitive_Operations (T : Entity_Id) return Elist_Id; - -- Called upon type derivation and extension. We scan the declarative - -- part in which the type appears, and collect subprograms that have - -- one subsidiary subtype of the type. These subprograms can only - -- appear after the type itself. - - function Compile_Time_Constraint_Error - (N : Node_Id; - Msg : String; - Ent : Entity_Id := Empty; - Loc : Source_Ptr := No_Location) - return Node_Id; - -- Subsidiary to Apply_Compile_Time_Constraint_Error and Checks routines. - -- Does not modify any nodes, but generates a warning (or error) message. - -- For convenience, the function always returns its first argument. - - procedure Conditional_Delay (New_Ent, Old_Ent : Entity_Id); - -- Sets the Has_Delayed_Freeze flag of New if the Delayed_Freeze flag - -- of Old is set and Old has no yet been Frozen (i.e. Is_Frozen is false); - - function Current_Entity (N : Node_Id) return Entity_Id; - -- Find the currently visible definition for a given identifier, that is to - -- say the first entry in the visibility chain for the Chars of N. - - function Current_Entity_In_Scope (N : Node_Id) return Entity_Id; - -- Find whether there is a previous definition for identifier N in the - -- current scope. Because declarations for a scope are not necessarily - -- contiguous (e.g. for packages) the first entry on the visibility chain - -- for N is not necessarily in the current scope. - - function Current_Scope return Entity_Id; - -- Get entity representing current scope - - function Current_Subprogram return Entity_Id; - -- Returns current enclosing subprogram. If Current_Scope is a subprogram, - -- then that is what is returned, otherwise the Enclosing_Subprogram of - -- the Current_Scope is returned. The returned value is Empty if this - -- is called from a library package which is not within any subprogram. - - function Defining_Entity (N : Node_Id) return Entity_Id; - -- Given a declaration N, returns the associated defining entity. If - -- the declaration has a specification, the entity is obtained from - -- the specification. If the declaration has a defining unit name, - -- then the defining entity is obtained from the defining unit name - -- ignoring any child unit prefixes. - - function Denotes_Discriminant (N : Node_Id) return Boolean; - -- Returns True if node N is an N_Identifier node for a discriminant. - -- Returns False for any other kind of node, or for an N_Identifier - -- node that does not denote a discriminant. - - function Depends_On_Discriminant (N : Node_Id) return Boolean; - -- Returns True if N denotes a discriminant or if N is a range, a subtype - -- indication or a scalar subtype where one of the bounds is a - -- discriminant. - - function Designate_Same_Unit - (Name1 : Node_Id; - Name2 : Node_Id) - return Boolean; - -- Return true if Name1 and Name2 designate the same unit name; - -- each of these names is supposed to be a selected component name, - -- an expanded name, a defining program unit name or an identifier - - function Enclosing_Generic_Body - (E : Entity_Id) - return Node_Id; - -- Returns the Node_Id associated with the innermost enclosing - -- generic body, if any. If none, then returns Empty. - - function Enclosing_Lib_Unit_Entity return Entity_Id; - -- Returns the entity of enclosing N_Compilation_Unit Node which is the - -- root of the current scope (which must not be Standard_Standard, and - -- the caller is responsible for ensuring this condition). - - function Enclosing_Lib_Unit_Node (N : Node_Id) return Node_Id; - -- Returns the enclosing N_Compilation_Unit Node that is the root - -- of a subtree containing N. - - function Enclosing_Subprogram (E : Entity_Id) return Entity_Id; - -- Utility function to return the Ada entity of the subprogram enclosing - -- the entity E, if any. Returns Empty if no enclosing subprogram. - - procedure Ensure_Freeze_Node (E : Entity_Id); - -- Make sure a freeze node is allocated for entity E. If necessary, - -- build and initialize a new freeze node and set Has_Delayed_Freeze - -- true for entity E. - - procedure Enter_Name (Def_Id : Node_Id); - -- Insert new name in symbol table of current scope with check for - -- duplications (error message is issued if a conflict is found) - -- Note: Enter_Name is not used for overloadable entities, instead - -- these are entered using Sem_Ch6.Enter_Overloadable_Entity. - - function Find_Corresponding_Discriminant - (Id : Node_Id; - Typ : Entity_Id) - return Entity_Id; - -- Because discriminants may have different names in a generic unit - -- and in an instance, they are resolved positionally when possible. - -- A reference to a discriminant carries the discriminant that it - -- denotes when analyzed. Subsequent uses of this id on a different - -- type denote the discriminant at the same position in this new type. - - function First_Actual (Node : Node_Id) return Node_Id; - -- Node is an N_Function_Call or N_Procedure_Call_Statement node. The - -- result returned is the first actual parameter in declaration order - -- (not the order of parameters as they appeared in the source, which - -- can be quite different as a result of the use of named parameters). - -- Empty is returned for a call with no parameters. The procedure for - -- iterating through the actuals in declaration order is to use this - -- function to find the first actual, and then use Next_Actual to obtain - -- the next actual in declaration order. Note that the value returned - -- is always the expression (not the N_Parameter_Association nodes - -- even if named association is used). - - function Full_Qualified_Name (E : Entity_Id) return String_Id; - -- Generates the string literal corresponding to the E's full qualified - -- name in upper case. An ASCII.NUL is appended as the last character - - procedure Gather_Components - (Typ : Entity_Id; - Comp_List : Node_Id; - Governed_By : List_Id; - Into : Elist_Id; - Report_Errors : out Boolean); - -- The purpose of this procedure is to gather the valid components - -- in a record type according to the values of its discriminants, in order - -- to validate the components of a record aggregate. - -- - -- Typ is the type of the aggregate when its constrained discriminants - -- need to be collected, otherwise it is Empty. - -- - -- Comp_List is an N_Component_List node. - -- - -- Governed_By is a list of N_Component_Association nodes, - -- where each choice list contains the name of a discriminant and - -- the expression field gives its value. The values of the - -- discriminants governing the (possibly nested) variant parts in - -- Comp_List are found in this Component_Association List. - -- - -- Into is the list where the valid components are appended. - -- Note that Into need not be an Empty list. If it's not, components - -- are attached to its tail. - -- - -- Report_Errors is set to True if the values of the discriminants - -- are non-static. - - -- This procedure is also used when building a record subtype. If the - -- discriminant constraint of the subtype is static, the components of the - -- subtype are only those of the variants selected by the values of the - -- discriminants. Otherwise all components of the parent must be included - -- in the subtype for semantic analysis. - - function Get_Actual_Subtype (N : Node_Id) return Entity_Id; - -- Given a node for an expression, obtain the actual subtype of the - -- expression. In the case of a parameter where the formal is an - -- unconstrained array or discriminated type, this will be the - -- previously constructed subtype of the actual. Note that this is - -- not quite the "Actual Subtype" of the RM, since it is always - -- a constrained type, i.e. it is the subtype of the value of the - -- actual. The actual subtype is also returned in other cases where - -- it has already been constructed for an object. Otherwise the - -- expression type is returned unchanged, except for the case of an - -- unconstrained array type, where an actual subtype is created, using - -- Insert_Actions if necessary to insert any associated actions. - - function Get_Actual_Subtype_If_Available (N : Node_Id) return Entity_Id; - -- This is like Get_Actual_Subtype, except that it never constructs an - -- actual subtype. If an actual subtype is already available, i.e. the - -- Actual_Subtype field of the corresponding entity is set, then it is - -- returned. Otherwise the Etype of the node is returned. - - function Get_Default_External_Name (E : Node_Or_Entity_Id) return Node_Id; - -- This is used to construct the string literal node representing a - -- default external name, i.e. one that is constructed from the name - -- of an entity, or (in the case of extended DEC import/export pragmas, - -- an identifier provided as the external name. Letters in the name are - -- according to the setting of Opt.External_Name_Default_Casing. - - procedure Get_Index_Bounds (N : Node_Id; L, H : out Node_Id); - -- This procedure assigns to L and H respectively the values of the - -- low and high bounds of node N, which must be a range, subtype - -- indication, or the name of a scalar subtype. The result in L, H - -- may be set to Error if there was an earlier error in the range. - - function Get_Enum_Lit_From_Pos - (T : Entity_Id; - Pos : Uint; - Loc : Source_Ptr) - return Entity_Id; - -- This function obtains the E_Enumeration_Literal entity for the - -- specified value from the enumneration type or subtype T. The - -- second argument is the Pos value, which is assumed to be in range. - -- The third argument supplies a source location for constructed - -- nodes returned by this function. - - function Get_Name_Entity_Id (Id : Name_Id) return Entity_Id; - -- An entity value is associated with each name in the name table. The - -- Get_Name_Entity_Id function fetches the Entity_Id of this entity, - -- which is the innermost visible entity with the given name. See the - -- body of Sem_Ch8 for further details on handling of entity visibility. - - function Get_Referenced_Object (N : Node_Id) return Node_Id; - -- Given a node, return the renamed object if the node represents - -- a renamed object, otherwise return the node unchanged. The node - -- may represent an arbitrary expression. - - function Get_Subprogram_Body (E : Entity_Id) return Node_Id; - -- Given the entity for a subprogram (E_Function or E_Procedure), - -- return the corresponding N_Subprogram_Body node. If the corresponding - -- body of the declaration is missing (as for an imported subprogram) - -- return Empty. - - function Get_Task_Body_Procedure (E : Entity_Id) return Node_Id; - pragma Inline (Get_Task_Body_Procedure); - -- Given an entity for a task type or subtype, retrieves the - -- Task_Body_Procedure field from the corresponding task type - -- declaration. - - function Has_Infinities (E : Entity_Id) return Boolean; - -- Determines if the range of the floating-point type E includes - -- infinities. Returns False if E is not a floating-point type. - - function Has_Private_Component (Type_Id : Entity_Id) return Boolean; - -- Check if a type has a (sub)component of a private type that has not - -- yet received a full declaration. - - function Has_Tagged_Component (Typ : Entity_Id) return Boolean; - -- Typ must be a composite type (array or record). This function is used - -- to check if '=' has to be expanded into a bunch component comparaisons. - - function In_Instance return Boolean; - -- Returns True if the current scope is within a generic instance. - - function In_Instance_Body return Boolean; - -- Returns True if current scope is within the body of an instance, where - -- several semantic checks (e.g. accessibility checks) are relaxed. - - function In_Instance_Not_Visible return Boolean; - -- Returns True if current scope is with the private part or the body of - -- an instance. Other semantic checks are suppressed in this context. - - function In_Instance_Visible_Part return Boolean; - -- Returns True if current scope is within the visible part of a package - -- instance, where several additional semantic checks apply. - - function In_Subprogram_Or_Concurrent_Unit return Boolean; - -- Determines if the current scope is within a subprogram compilation - -- unit (inside a subprogram declaration, subprogram body, or generic - -- subprogram declaration) or within a task or protected body. The test - -- is for appearing anywhere within such a construct (that is it does not - -- need to be directly within). - - function In_Visible_Part (Scope_Id : Entity_Id) return Boolean; - -- Determine whether a declaration occurs within the visible part of a - -- package specification. The package must be on the scope stack, and the - -- corresponding private part must not. - - function Is_AAMP_Float (E : Entity_Id) return Boolean; - -- Defined for all type entities. Returns True only for the base type - -- of float types with AAMP format. The particular format is determined - -- by the Digits_Value value which is 6 for the 32-bit floating point type, - -- or 9 for the 48-bit type. This is not an attribute function (like - -- VAX_Float) in order to not use up an extra flag and to prevent - -- the dependency of Einfo on Targparm which would be required for a - -- synthesized attribute. - - function Is_Dependent_Component_Of_Mutable_Object - (Object : Node_Id) - return Boolean; - -- Returns True if Object is the name of a subcomponent that - -- depends on discriminants of a variable whose nominal subtype - -- is unconstrained and not indefinite, and the variable is - -- not aliased. Otherwise returns False. The nodes passed - -- to this function are assumed to denote objects. - - function Is_Actual_Parameter (N : Node_Id) return Boolean; - -- Determines if N is an actual parameter in a subprogram call. - - function Is_Aliased_View (Obj : Node_Id) return Boolean; - -- Determine if Obj is an aliased view, i.e. the name of an - -- object to which 'Access or 'Unchecked_Access can apply. - - function Is_Atomic_Object (N : Node_Id) return Boolean; - -- Determines if the given node denotes an atomic object in the sense - -- of the legality checks described in RM C.6(12). - - function Is_False (U : Uint) return Boolean; - -- The argument is a Uint value which is the Boolean'Pos value of a - -- Boolean operand (i.e. is either 0 for False, or 1 for True). This - -- function simply tests if it is False (i.e. zero) - - function Is_Fixed_Model_Number (U : Ureal; T : Entity_Id) return Boolean; - -- Returns True iff the number U is a model number of the fixed- - -- point type T, i.e. if it is an exact multiple of Small. - - function Is_Fully_Initialized_Type (Typ : Entity_Id) return Boolean; - -- Typ is a type entity. This function returns true if this type is - -- fully initialized, meaning that an object of the type is fully - -- initialized. Note that initialization resulting from the use of - -- pragma Normalized_Scalars does not count. - - function Is_Inherited_Operation (E : Entity_Id) return Boolean; - -- E is a subprogram. Return True is E is an implicit operation inherited - -- by a derived type declarations. - - function Is_Library_Level_Entity (E : Entity_Id) return Boolean; - -- A library-level declaration is one that is accessible from Standard, - -- i.e. a library unit or an entity declared in a library package. - - function Is_Local_Variable_Reference (Expr : Node_Id) return Boolean; - -- Determines whether Expr is a refeference to a variable or IN OUT - -- mode parameter of the current enclosing subprogram. - - function Is_Object_Reference (N : Node_Id) return Boolean; - -- Determines if the tree referenced by N represents an object. Both - -- variable and constant objects return True (compare Is_Variable). - - function Is_OK_Variable_For_Out_Formal (AV : Node_Id) return Boolean; - -- Used to test if AV is an acceptable formal for an OUT or IN OUT - -- formal. Note that the Is_Variable function is not quite the right - -- test because this is a case in which conversions whose expression - -- is a variable (in the Is_Variable sense) with a non-tagged type - -- target are considered view conversions and hence variables. - - function Is_RCI_Pkg_Spec_Or_Body (Cunit : Node_Id) return Boolean; - -- Return True if a compilation unit is the specification or the - -- body of a remote call interface package. - - function Is_Remote_Access_To_Class_Wide_Type (E : Entity_Id) return Boolean; - -- Return True if E is a remote access-to-class-wide-limited_private type - - function Is_Remote_Access_To_Subprogram_Type (E : Entity_Id) return Boolean; - -- Return True if E is a remote access to subprogram type. - - function Is_Remote_Call (N : Node_Id) return Boolean; - -- Return True if N denotes a potentially remote call - - function Is_Selector_Name (N : Node_Id) return Boolean; - -- Given an N_Identifier node N, determines if it is a Selector_Name. - -- As described in Sinfo, Selector_Names are special because they - -- represent use of the N_Identifier node for a true identifier, when - -- normally such nodes represent a direct name. - - function Is_Statement (N : Node_Id) return Boolean; - -- Check if the node N is a statement node. Note that this includes - -- the case of procedure call statements (unlike the direct use of - -- the N_Statement_Other_Than_Procedure_Call subtype from Sinfo) - - function Is_Transfer (N : Node_Id) return Boolean; - -- Returns True if the node N is a statement which is known to cause - -- an unconditional transfer of control at runtime, i.e. the following - -- statement definitely will not be executed. - - function Is_True (U : Uint) return Boolean; - -- The argument is a Uint value which is the Boolean'Pos value of a - -- Boolean operand (i.e. is either 0 for False, or 1 for True). This - -- function simply tests if it is True (i.e. non-zero) - - function Is_Variable (N : Node_Id) return Boolean; - -- Determines if the tree referenced by N represents a variable, i.e. - -- can appear on the left side of an assignment. There is one situation, - -- namely formal parameters, in which non-tagged type conversions are - -- also considered variables, but Is_Variable returns False for such - -- cases, since it has no knowledge of the context. Note that this is - -- the point at which Assignment_OK is checked, and True is returned - -- for any tree thus marked. - - function Is_Volatile_Object (N : Node_Id) return Boolean; - -- Determines if the given node denotes an volatile object in the sense - -- of the legality checks described in RM C.6(12). - - procedure Kill_Size_Check_Code (E : Entity_Id); - -- Called when an address clause or pragma Import is applied to an - -- entity. If the entity is a variable or a constant, and size check - -- code is present, this size check code is killed, since the object - -- will not be allocated by the program. - - function New_External_Entity - (Kind : Entity_Kind; - Scope_Id : Entity_Id; - Sloc_Value : Source_Ptr; - Related_Id : Entity_Id; - Suffix : Character; - Suffix_Index : Nat := 0; - Prefix : Character := ' ') - return Entity_Id; - -- This function creates an N_Defining_Identifier node for an internal - -- created entity, such as an implicit type or subtype, or a record - -- initialization procedure. The entity name is constructed with a call - -- to New_External_Name (Related_Id, Suffix, Suffix_Index, Prefix), so - -- that the generated name may be referenced as a public entry, and the - -- Is_Public flag is set if needed (using Set_Public_Status). If the - -- entity is for a type or subtype, the size/align fields are initialized - -- to unknown (Uint_0). - - function New_Internal_Entity - (Kind : Entity_Kind; - Scope_Id : Entity_Id; - Sloc_Value : Source_Ptr; - Id_Char : Character) - return Entity_Id; - -- This function is similar to New_External_Entity, except that the - -- name is constructed by New_Internal_Name (Id_Char). This is used - -- when the resulting entity does not have to be referenced as a - -- public entity (and in this case Is_Public is not set). - - procedure Next_Actual (Actual_Id : in out Node_Id); - pragma Inline (Next_Actual); - -- Next_Actual (N) is equivalent to N := Next_Actual (N) - - function Next_Actual (Actual_Id : Node_Id) return Node_Id; - -- Find next actual parameter in declaration order. As described for - -- First_Actual, this is the next actual in the declaration order, not - -- the call order, so this does not correspond to simply taking the - -- next entry of the Parameter_Associations list. The argument is an - -- actual previously returned by a call to First_Actual or Next_Actual. - -- Note tha the result produced is always an expression, not a parameter - -- assciation node, even if named notation was used. - - procedure Normalize_Actuals - (N : Node_Id; - S : Entity_Id; - Report : Boolean; - Success : out Boolean); - -- Reorders lists of actuals according to names of formals, value returned - -- in Success indicates success of reordering. For more details, see body. - -- Errors are reported only if Report is set to True. - - procedure Note_Possible_Modification (N : Node_Id); - -- This routine is called if the sub-expression N maybe the target of - -- an assignment (e.g. it is the left side of an assignment, used as - -- an out parameters, or used as prefixes of access attributes). It - -- sets May_Be_Modified in the associated entity if there is one, - -- taking into account the rule that in the case of renamed objects, - -- it is the flag in the renamed object that must be set. - - function Object_Access_Level (Obj : Node_Id) return Uint; - -- Return the accessibility level of the view of the object Obj. - -- For convenience, qualified expressions applied to object names - -- are also allowed as actuals for this function. - - function Private_Component (Type_Id : Entity_Id) return Entity_Id; - -- Returns some private component (if any) of the given Type_Id. - -- Used to enforce the rules on visibility of operations on composite - -- types, that depend on the full view of the component type. For a - -- record type there may be several such components, we just return - -- the first one. - - procedure Process_End_Label (N : Node_Id; Typ : Character); - -- N is a node whose End_Label is to be processed, generating all - -- appropriate cross-reference entries, and performing style checks - -- for any identifier references in the end label. Typ is either - -- 'e' or 't indicating the type of the cross-reference entity - -- (e for spec, t for body, see Lib.Xref spec for details). - - function Real_Convert (S : String) return Node_Id; - -- S is a possibly signed syntactically valid real literal. The result - -- returned is an N_Real_Literal node representing the literal value. - - function Requires_Transient_Scope (Id : Entity_Id) return Boolean; - -- E is a type entity. The result is True when temporaries of this - -- type need to be wrapped in a transient scope to be reclaimed - -- properly when a secondary stack is in use. Examples of types - -- requiring such wrapping are controlled types and variable-sized - -- types including unconstrained arrays - - procedure Reset_Analyzed_Flags (N : Node_Id); - -- Reset the Analyzed flags in all nodes of the tree whose root is N - - function Same_Name (N1, N2 : Node_Id) return Boolean; - -- Determine if two (possibly expanded) names are the same name - - function Same_Type (T1, T2 : Entity_Id) return Boolean; - -- Determines if T1 and T2 represent exactly the same type. Two types - -- are the same if they are identical, or if one is an unconstrained - -- subtype of the other, or they are both common subtypes of the same - -- type with identical constraints. The result returned is conservative. - -- It is True if the types are known to be the same, but a result of - -- False is indecisive (e.g. the compiler may not be able to tell that - -- two constraints are identical). - - function Scope_Within_Or_Same (Scope1, Scope2 : Entity_Id) return Boolean; - -- Determines if the entity Scope1 is the same as Scope2, or if it is - -- inside it, where both entities represent scopes. Note that scopes - -- are only partially ordered, so Scope_Within_Or_Same (A,B) and - -- Scope_Within_Or_Same (B,A) can both be False for a given pair A,B. - - function Scope_Within (Scope1, Scope2 : Entity_Id) return Boolean; - -- Like Scope_Within_Or_Same, except that this function returns - -- False in the case where Scope1 and Scope2 are the same scope. - - procedure Set_Current_Entity (E : Entity_Id); - -- Establish the entity E as the currently visible definition of its - -- associated name (i.e. the Node_Id associated with its name) - - procedure Set_Entity_With_Style_Check (N : Node_Id; Val : Entity_Id); - -- This procedure has the same calling sequence as Set_Entity, but - -- if Style_Check is set, then it calls a style checking routine which - -- can check identifier spelling style. - - procedure Set_Name_Entity_Id (Id : Name_Id; Val : Entity_Id); - -- Sets the Entity_Id value associated with the given name, which is the - -- Id of the innermost visible entity with the given name. See the body - -- of package Sem_Ch8 for further details on the handling of visibility. - - procedure Set_Next_Actual (Ass1_Id : Node_Id; Ass2_Id : Node_Id); - -- The arguments may be parameter associations, whose descendants - -- are the optional formal name and the actual parameter. Positional - -- parameters are already members of a list, and do not need to be - -- chained separately. See also First_Actual and Next_Actual. - - procedure Set_Public_Status (Id : Entity_Id); - -- If an entity (visible or otherwise) is defined in a library - -- package, or a package that is itself public, then this subprogram - -- labels the entity public as well. - - procedure Set_Scope_Is_Transient (V : Boolean := True); - -- Set the flag Is_Transient of the current scope - - procedure Set_Size_Info (T1, T2 : Entity_Id); - -- Copies the Esize field and Has_Biased_Representation flag from - -- (sub)type entity T2 to (sub)type entity T1. Also copies the - -- Is_Unsigned_Type flag in the fixed-point and discrete cases, - -- and also copies the alignment value from T2 to T1. It does NOT - -- copy the RM_Size field, which must be separately set if this - -- is required to be copied also. - - function Scope_Is_Transient return Boolean; - -- True if the current scope is transient. - - function Static_Integer (N : Node_Id) return Uint; - -- This function analyzes the given expression node and then resolves it - -- as any integer type. If the result is static, then the value of the - -- universal expression is returned, otherwise an error message is output - -- and a value of No_Uint is returned. - - function Statically_Different (E1, E2 : Node_Id) return Boolean; - -- Return True if it can be statically determined that the Expressions - -- E1 and E2 refer to different objects - - function Subprogram_Access_Level (Subp : Entity_Id) return Uint; - -- Return the accessibility level of the view denoted by Subp. - - procedure Trace_Scope (N : Node_Id; E : Entity_Id; Msg : String); - -- Print debugging information on entry to each unit being analyzed. - - procedure Transfer_Entities (From : Entity_Id; To : Entity_Id); - -- Move a list of entities from one scope to another, and recompute - -- Is_Public based upon the new scope. - - function Type_Access_Level (Typ : Entity_Id) return Uint; - -- Return the accessibility level of Typ. - - function Unit_Declaration_Node (Unit_Id : Entity_Id) return Node_Id; - -- Unit_Id is the simple name of a program unit, this function returns - -- the corresponding xxx_Declaration node for the entity. Also applies - -- to the body entities for subprograms in tasks, in which case it - -- returns the subprogram or task body node for it. The unit may be - -- a child unit with any number of ancestors. - - function Within_Init_Proc return Boolean; - -- Determines if Current_Scope is within an Init_Proc - - procedure Wrong_Type (Expr : Node_Id; Expected_Type : Entity_Id); - -- Output error message for incorrectly typed expression. Expr is the - -- node for the incorrectly typed construct (Etype (Expr) is the type - -- found), and Expected_Type is the entity for the expected type. Note - -- that Expr does not have to be a subexpression, anything with an - -- Etype field may be used. - -private - pragma Inline (Current_Entity); - pragma Inline (Get_Name_Entity_Id); - pragma Inline (Is_False); - pragma Inline (Is_Statement); - pragma Inline (Is_True); - pragma Inline (Set_Current_Entity); - pragma Inline (Set_Name_Entity_Id); - pragma Inline (Set_Size_Info); - -end Sem_Util;