| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- E X P _ T S S -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- $Revision: 1.26 $ |
| -- -- |
| -- 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. -- |
| -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Atree; use Atree; |
| with Einfo; use Einfo; |
| with Elists; use Elists; |
| with Exp_Util; use Exp_Util; |
| with Lib; use Lib; |
| with Sem_Util; use Sem_Util; |
| with Sinfo; use Sinfo; |
| with Snames; use Snames; |
| |
| package body Exp_Tss is |
| |
| -------------------- |
| -- Base_Init_Proc -- |
| -------------------- |
| |
| function Base_Init_Proc (Typ : Entity_Id) return Entity_Id is |
| Full_Type : E; |
| Proc : Entity_Id; |
| |
| begin |
| pragma Assert (Ekind (Typ) in Type_Kind); |
| |
| if Is_Private_Type (Typ) then |
| Full_Type := Underlying_Type (Base_Type (Typ)); |
| else |
| Full_Type := Typ; |
| end if; |
| |
| if No (Full_Type) then |
| return Empty; |
| elsif Is_Concurrent_Type (Full_Type) |
| and then Present (Corresponding_Record_Type (Base_Type (Full_Type))) |
| then |
| return Init_Proc (Corresponding_Record_Type (Base_Type (Full_Type))); |
| |
| else |
| Proc := Init_Proc (Base_Type (Full_Type)); |
| |
| if No (Proc) |
| and then Is_Composite_Type (Full_Type) |
| and then Is_Derived_Type (Full_Type) |
| then |
| return Init_Proc (Root_Type (Full_Type)); |
| else |
| return Proc; |
| end if; |
| end if; |
| end Base_Init_Proc; |
| |
| -------------- |
| -- Copy_TSS -- |
| -------------- |
| |
| -- Note: internally this routine is also used to initially set up |
| -- a TSS entry for a new type (case of being called from Set_TSS) |
| |
| procedure Copy_TSS (TSS : Entity_Id; Typ : Entity_Id) is |
| FN : Node_Id; |
| |
| begin |
| Ensure_Freeze_Node (Typ); |
| FN := Freeze_Node (Typ); |
| |
| if No (TSS_Elist (FN)) then |
| Set_TSS_Elist (FN, New_Elmt_List); |
| end if; |
| |
| -- We prepend here, so that a second call overrides the first, it |
| -- is not clear that this is required, but it seems reasonable. |
| |
| Prepend_Elmt (TSS, TSS_Elist (FN)); |
| end Copy_TSS; |
| |
| --------------------------------- |
| -- Has_Non_Null_Base_Init_Proc -- |
| --------------------------------- |
| |
| function Has_Non_Null_Base_Init_Proc (Typ : Entity_Id) return Boolean is |
| BIP : constant Entity_Id := Base_Init_Proc (Typ); |
| |
| begin |
| return Present (BIP) and then not Is_Null_Init_Proc (BIP); |
| end Has_Non_Null_Base_Init_Proc; |
| |
| --------------- |
| -- Init_Proc -- |
| --------------- |
| |
| function Init_Proc (Typ : Entity_Id) return Entity_Id is |
| begin |
| return TSS (Typ, Name_uInit_Proc); |
| end Init_Proc; |
| |
| ------------------- |
| -- Set_Init_Proc -- |
| ------------------- |
| |
| procedure Set_Init_Proc (Typ : Entity_Id; Init : Entity_Id) is |
| begin |
| Set_TSS (Typ, Init); |
| end Set_Init_Proc; |
| |
| ------------- |
| -- Set_TSS -- |
| ------------- |
| |
| procedure Set_TSS (Typ : Entity_Id; TSS : Entity_Id) is |
| Subprog_Body : constant Node_Id := Unit_Declaration_Node (TSS); |
| |
| begin |
| -- Case of insertion location is in unit defining the type |
| |
| if In_Same_Code_Unit (Typ, TSS) then |
| Append_Freeze_Action (Typ, Subprog_Body); |
| |
| -- Otherwise, we are using an already existing TSS in another unit |
| |
| else |
| null; |
| end if; |
| |
| Copy_TSS (TSS, Typ); |
| end Set_TSS; |
| |
| --------- |
| -- TSS -- |
| --------- |
| |
| function TSS (Typ : Entity_Id; Nam : Name_Id) return Entity_Id is |
| FN : constant Node_Id := Freeze_Node (Typ); |
| Elmt : Elmt_Id; |
| Subp : Entity_Id; |
| |
| begin |
| if No (FN) then |
| return Empty; |
| |
| elsif No (TSS_Elist (FN)) then |
| return Empty; |
| |
| else |
| Elmt := First_Elmt (TSS_Elist (FN)); |
| |
| while Present (Elmt) loop |
| if Chars (Node (Elmt)) = Nam then |
| Subp := Node (Elmt); |
| |
| -- For stream subprograms, the TSS entity may be a renaming- |
| -- as-body of an already generated entity. Use that one rather |
| -- the one introduced by the renaming, which is an artifact of |
| -- current stream handling. |
| |
| if Nkind (Parent (Parent (Subp))) = |
| N_Subprogram_Renaming_Declaration |
| and then |
| Present (Corresponding_Spec (Parent (Parent (Subp)))) |
| then |
| return Corresponding_Spec (Parent (Parent (Subp))); |
| else |
| return Subp; |
| end if; |
| |
| else |
| Next_Elmt (Elmt); |
| end if; |
| end loop; |
| end if; |
| |
| return Empty; |
| end TSS; |
| |
| end Exp_Tss; |
