------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S E M _ C H 6 -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2003 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. -- -- -- ------------------------------------------------------------------------------ with Types; use Types; package Sem_Ch6 is procedure Analyze_Abstract_Subprogram_Declaration (N : Node_Id); procedure Analyze_Function_Call (N : Node_Id); procedure Analyze_Operator_Symbol (N : Node_Id); procedure Analyze_Parameter_Association (N : Node_Id); procedure Analyze_Procedure_Call (N : Node_Id); procedure Analyze_Return_Statement (N : Node_Id); procedure Analyze_Subprogram_Declaration (N : Node_Id); procedure Analyze_Subprogram_Body (N : Node_Id); function Analyze_Subprogram_Specification (N : Node_Id) return Entity_Id; -- Analyze subprogram specification in both subprogram declarations -- and body declarations. Returns the defining entity for the spec. procedure Cannot_Inline (Msg : String; N : Node_Id; Subp : Entity_Id); -- This procedure is called if the node N, an instance of a call to -- subprogram Subp, cannot be inlined. Msg is the message to be issued, -- and has a ? as the last character. If Subp has a pragma Always_Inlined, -- then an error message is issued (by removing the last character of Msg). -- If Subp is not Always_Inlined, then a warning is issued if the flag -- Ineffective_Inline_Warnings is set, and if not, the call has no effect. procedure Check_Delayed_Subprogram (Designator : Entity_Id); -- Designator can be a E_Subrpgram_Type, E_Procedure or E_Function. If a -- type in its profile depends on a private type without a full -- declaration, indicate that the subprogram is delayed. procedure Check_Discriminant_Conformance (N : Node_Id; Prev : Entity_Id; Prev_Loc : Node_Id); -- Check that the discriminants of a full type N fully conform to -- the discriminants of the corresponding partial view Prev. -- Prev_Loc indicates the source location of the partial view, -- which may be different than Prev in the case of private types. procedure Check_Fully_Conformant (New_Id : Entity_Id; Old_Id : Entity_Id; Err_Loc : Node_Id := Empty); -- Check that two callable entitites (subprograms, entries, literals) -- are fully conformant, post error message if not (RM 6.3.1(17)) with -- the flag being placed on the Err_Loc node if it is specified, and -- on the appropriate component of the New_Id construct if not. Note: -- when checking spec/body conformance, New_Id must be the body entity -- and Old_Id is the spec entity (the code in the implementation relies -- on this ordering, and in any case, this makes sense, since if flags -- are to be placed on the construct, they clearly belong on the body. procedure Check_Mode_Conformant (New_Id : Entity_Id; Old_Id : Entity_Id; Err_Loc : Node_Id := Empty; Get_Inst : Boolean := False); -- Check that two callable entitites (subprograms, entries, literals) -- are mode conformant, post error message if not (RM 6.3.1(15)) with -- the flag being placed on the Err_Loc node if it is specified, and -- on the appropriate component of the New_Id construct if not. The -- argument Get_Inst is set to True when this is a check against a -- formal access-to-subprogram type, indicating that mapping of types -- is needed. procedure Check_Subtype_Conformant (New_Id : Entity_Id; Old_Id : Entity_Id; Err_Loc : Node_Id := Empty); -- Check that two callable entitites (subprograms, entries, literals) -- are subtype conformant, post error message if not (RM 6.3.1(16)) -- the flag being placed on the Err_Loc node if it is specified, and -- on the appropriate component of the New_Id construct if not. procedure Check_Type_Conformant (New_Id : Entity_Id; Old_Id : Entity_Id; Err_Loc : Node_Id := Empty); -- Check that two callable entitites (subprograms, entries, literals) -- are type conformant, post error message if not (RM 6.3.1(14)) with -- the flag being placed on the Err_Loc node if it is specified, and -- on the appropriate component of the New_Id construct if not. procedure Create_Extra_Formals (E : Entity_Id); -- For each parameter of a subprogram or entry that requires an additional -- formal (such as for access parameters and indefinite discriminated -- parameters), creates the appropriate formal and attach it to its -- associated parameter. Each extra formal will also be appended to -- the end of Subp's parameter list (with each subsequent extra formal -- being attached to the preceding extra formal). function Find_Corresponding_Spec (N : Node_Id) return Entity_Id; -- Use the subprogram specification in the body to retrieve the previous -- subprogram declaration, if any. function Fully_Conformant (New_Id, Old_Id : Entity_Id) return Boolean; -- Determine whether two callable entities (subprograms, entries, -- literals) are fully conformant (RM 6.3.1(17)) function Fully_Conformant_Expressions (Given_E1 : Node_Id; Given_E2 : Node_Id) return Boolean; -- Determines if two (non-empty) expressions are fully conformant -- as defined by (RM 6.3.1(18-21)) function Fully_Conformant_Discrete_Subtypes (Given_S1 : Node_Id; Given_S2 : Node_Id) return Boolean; -- Determines if two subtype definitions are fully conformant. Used -- for entry family conformance checks (RM 6.3.1 (24)). function Mode_Conformant (New_Id, Old_Id : Entity_Id) return Boolean; -- Determine whether two callable entities (subprograms, entries, -- literals) are mode conformant (RM 6.3.1(15)) procedure New_Overloaded_Entity (S : Entity_Id; Derived_Type : Entity_Id := Empty); -- Process new overloaded entity. Overloaded entities are created -- by enumeration type declarations, subprogram specifications, -- entry declarations, and (implicitly) by type derivations. -- If Derived_Type is not Empty, then it indicates that this -- is subprogram derived for that type. procedure Process_Formals (T : List_Id; Related_Nod : Node_Id); -- Enter the formals in the scope of the subprogram or entry, and -- analyze default expressions if any. The implicit types created for -- access parameter are attached to the Related_Nod which comes from the -- context. procedure Set_Actual_Subtypes (N : Node_Id; Subp : Entity_Id); -- If the formals of a subprogram are unconstrained, build a subtype -- declaration that uses the bounds or discriminants of the actual to -- construct an actual subtype for them. This is an optimization that -- is done only in some cases where the actual subtype cannot change -- during execution of the subprogram. By setting the actual subtype -- once, we avoid recomputing it unnecessarily. procedure Set_Formal_Mode (Formal_Id : Entity_Id); -- Set proper Ekind to reflect formal mode (in, out, in out) function Subtype_Conformant (New_Id, Old_Id : Entity_Id) return Boolean; -- Determine whether two callable entities (subprograms, entries, -- literals) are subtype conformant (RM6.3.1(16)) function Type_Conformant (New_Id, Old_Id : Entity_Id) return Boolean; -- Determine whether two callable entities (subprograms, entries, -- literals) are type conformant (RM6.3.1(14)) procedure Valid_Operator_Definition (Designator : Entity_Id); -- Verify that an operator definition has the proper number of formals end Sem_Ch6;