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sem_ch12.adb (Instantiate_Subprogram_Body): When creating the defining entity for the instance body...

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2005-09-01  Ed Schonberg  <schonberg@adacore.com>
	    Javier Miranda  <miranda@adacore.com>
	    Gary Dismukes  <dismukes@adacore.com>

	* sem_ch12.adb (Instantiate_Subprogram_Body): When creating the
	defining entity for the instance body, make a new defining identifier
	rather than copying the entity of the spec, to prevent accidental
	sharing of the entity list.
	(Check_Private_View): When exchanging views of private types, build the
	list of exchanged views as a stack, to ensure that on exit the exchanges
	are undone in the proper order.
	(Analyze_Package_Instantiation, Analyze_Subprogram_Instantiation):
	Restore the compilation environment in case of instantiation_error.
	(Analyze_Generic_Subprogram_Declaration): Handle creation of type entity
	for an anonymous access result.
	(Instantiate_Generic_Subprogram): Subtype_Mark => Result_Definition
	(Formal_Entity): Handle properly the case of a formal package that
	denotes a generic package renaming.

From-SVN: r103879
This commit is contained in:
Ed Schonberg 2005-09-05 09:59:10 +02:00 committed by Arnaud Charlet
parent f818564703
commit 48aa1f1a61
1 changed files with 57 additions and 24 deletions
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81
gcc/ada/sem_ch12.adb
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@ -33,7 +33,6 @@ with Fname; use Fname;
with Fname.UF; use Fname.UF;
with Freeze; use Freeze;
with Hostparm;
with Inline; use Inline;
with Lib; use Lib;
with Lib.Load; use Lib.Load;
with Lib.Xref; use Lib.Xref;
@ -2240,6 +2239,7 @@ package body Sem_Ch12 is
Id : Entity_Id;
Formals : List_Id;
New_N : Node_Id;
Result_Type : Entity_Id;
Save_Parent : Node_Id;
begin
@ -2283,17 +2283,23 @@ package body Sem_Ch12 is
if Nkind (Spec) = N_Function_Specification then
Set_Ekind (Id, E_Generic_Function);
Find_Type (Subtype_Mark (Spec));
Set_Etype (Id, Entity (Subtype_Mark (Spec)));
if Nkind (Result_Definition (Spec)) = N_Access_Definition then
Result_Type := Access_Definition (Spec, Result_Definition (Spec));
Set_Etype (Id, Result_Type);
else
Find_Type (Result_Definition (Spec));
Set_Etype (Id, Entity (Result_Definition (Spec)));
end if;
else
Set_Ekind (Id, E_Generic_Procedure);
Set_Etype (Id, Standard_Void_Type);
end if;
-- For a library unit, we have reconstructed the entity for the
-- unit, and must reset it in the library tables. We also need
-- to make sure that Body_Required is set properly in the original
-- compilation unit node.
-- For a library unit, we have reconstructed the entity for the unit,
-- and must reset it in the library tables. We also make sure that
-- Body_Required is set properly in the original compilation unit node.
if Nkind (Parent (N)) = N_Compilation_Unit then
Set_Cunit_Entity (Current_Sem_Unit, Id);
@ -2315,9 +2321,9 @@ package body Sem_Ch12 is
-- Analyze_Package_Instantiation --
-----------------------------------
-- Note: this procedure is also used for formal package declarations,
-- in which case the argument N is an N_Formal_Package_Declaration
-- node. This should really be noted in the spec! ???
-- Note: this procedure is also used for formal package declarations, in
-- which case the argument N is an N_Formal_Package_Declaration node.
-- This should really be noted in the spec! ???
procedure Analyze_Package_Instantiation (N : Node_Id) is
Loc : constant Source_Ptr := Sloc (N);
@ -2335,6 +2341,7 @@ package body Sem_Ch12 is
Is_Actual_Pack : constant Boolean :=
Is_Internal (Defining_Entity (N));
Env_Installed : Boolean := False;
Parent_Installed : Boolean := False;
Renaming_List : List_Id;
Unit_Renaming : Node_Id;
@ -2428,6 +2435,7 @@ package body Sem_Ch12 is
Pre_Analyze_Actuals (N);
Init_Env;
Env_Installed := True;
Check_Generic_Child_Unit (Gen_Id, Parent_Installed);
Gen_Unit := Entity (Gen_Id);
@ -2900,6 +2908,7 @@ package body Sem_Ch12 is
end if;
Restore_Env;
Env_Installed := False;
end if;
Validate_Categorization_Dependency (N, Act_Decl_Id);
@ -2933,6 +2942,10 @@ package body Sem_Ch12 is
if Parent_Installed then
Remove_Parent;
end if;
if Env_Installed then
Restore_Env;
end if;
end Analyze_Package_Instantiation;
--------------------------
@ -3188,6 +3201,7 @@ package body Sem_Ch12 is
Act_Spec : Node_Id;
Act_Tree : Node_Id;
Env_Installed : Boolean := False;
Gen_Unit : Entity_Id;
Gen_Decl : Node_Id;
Pack_Id : Entity_Id;
@ -3364,6 +3378,7 @@ package body Sem_Ch12 is
Pre_Analyze_Actuals (N);
Init_Env;
Env_Installed := True;
Check_Generic_Child_Unit (Gen_Id, Parent_Installed);
Gen_Unit := Entity (Gen_Id);
@ -3598,6 +3613,7 @@ package body Sem_Ch12 is
end if;
Restore_Env;
Env_Installed := False;
Generic_Renamings.Set_Last (0);
Generic_Renamings_HTable.Reset;
end if;
@ -3607,6 +3623,10 @@ package body Sem_Ch12 is
if Parent_Installed then
Remove_Parent;
end if;
if Env_Installed then
Restore_Env;
end if;
end Analyze_Subprogram_Instantiation;
-------------------------
@ -4599,7 +4619,7 @@ package body Sem_Ch12 is
elsif Nkind (Parent (N)) = N_Subtype_Declaration
or else not In_Private_Part (Scope (Base_Type (T)))
then
Append_Elmt (T, Exchanged_Views);
Prepend_Elmt (T, Exchanged_Views);
Exchange_Declarations (Etype (Get_Associated_Node (N)));
end if;
@ -4640,7 +4660,7 @@ package body Sem_Ch12 is
and then not Is_Generic_Type (BT)
and then not In_Open_Scopes (BT)
then
Append_Elmt (Full_View (BT), Exchanged_Views);
Prepend_Elmt (Full_View (BT), Exchanged_Views);
Exchange_Declarations (BT);
end if;
end if;
@ -6542,14 +6562,25 @@ package body Sem_Ch12 is
Formal_Node : Node_Id;
Formal_Ent : Entity_Id;
Gen_Decl : constant Node_Id :=
Unit_Declaration_Node
(Entity (Name (Orig_Node)));
Formals : constant List_Id :=
Generic_Formal_Declarations (Gen_Decl);
Gen_Decl : Node_Id;
Formals : List_Id;
begin
-- The actual may be a renamed generic package, in which
-- case we want to retrieve the original generic in order
-- to traverse its formal part.
if Present (Renamed_Entity (Entity (Name (Orig_Node)))) then
Gen_Decl :=
Unit_Declaration_Node (
Renamed_Entity (Entity (Name (Orig_Node))));
else
Gen_Decl :=
Unit_Declaration_Node (Entity (Name (Orig_Node)));
end if;
Formals := Generic_Formal_Declarations (Gen_Decl);
if Present (Formals) then
Formal_Node := First_Non_Pragma (Formals);
else
@ -7260,7 +7291,7 @@ package body Sem_Ch12 is
Prepend (Subt_Decl, List);
Append_Elmt (Full_View (Ftyp), Exchanged_Views);
Prepend_Elmt (Full_View (Ftyp), Exchanged_Views);
Exchange_Declarations (Ftyp);
end if;
@ -7834,7 +7865,8 @@ package body Sem_Ch12 is
Make_Subprogram_Body (Loc,
Specification =>
Make_Procedure_Specification (Loc,
Defining_Unit_Name => New_Copy (Anon_Id),
Defining_Unit_Name =>
Make_Defining_Identifier (Loc, Chars (Anon_Id)),
Parameter_Specifications =>
New_Copy_List
(Parameter_Specifications (Parent (Anon_Id)))),
@ -7860,11 +7892,12 @@ package body Sem_Ch12 is
Make_Subprogram_Body (Loc,
Specification =>
Make_Function_Specification (Loc,
Defining_Unit_Name => New_Copy (Anon_Id),
Defining_Unit_Name =>
Make_Defining_Identifier (Loc, Chars (Anon_Id)),
Parameter_Specifications =>
New_Copy_List
(Parameter_Specifications (Parent (Anon_Id))),
Subtype_Mark =>
Result_Definition =>
New_Occurrence_Of (Etype (Anon_Id), Loc)),
Declarations => Empty_List,
@ -10165,7 +10198,7 @@ package body Sem_Ch12 is
Priv_Elmt := First_Elmt (Private_Dependents (BT));
if Present (Full_View (BT)) then
Append_Elmt (Full_View (BT), Exchanged_Views);
Prepend_Elmt (Full_View (BT), Exchanged_Views);
Exchange_Declarations (BT);
end if;
@ -10184,7 +10217,7 @@ package body Sem_Ch12 is
if Present (Full_View (Priv_Sub))
and then not Is_Private_Type (Etype (Full_View (Priv_Sub)))
then
Append_Elmt (Full_View (Priv_Sub), Exchanged_Views);
Prepend_Elmt (Full_View (Priv_Sub), Exchanged_Views);
Exchange_Declarations (Priv_Sub);
end if;