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sem_ch10.adb (Build_Ancestor_Name): If the ancestor is an instantiation that has been rewritten as a package body... 

2005-03-08  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch10.adb (Build_Ancestor_Name): If the ancestor is an
	instantiation that has been rewritten as a package body, retrieve spec
	to generate proper name for implicit_with_clause.
	(Install_Parents): Recognize a parent that is an instantiation but has
	been rewritten as a package declaration during analysis.

From-SVN: r96502
This commit is contained in:
Ed Schonberg 2005-03-15 17:12:20 +01:00 committed by Arnaud Charlet
parent c8427bff14
commit f5905c0beb
1 changed files with 31 additions and 12 deletions
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43
gcc/ada/sem_ch10.adb
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@ -2556,15 +2556,26 @@ package body Sem_Ch10 is
-------------------------
function Build_Ancestor_Name (P : Node_Id) return Node_Id is
P_Ref : constant Node_Id :=
P_Ref : constant Node_Id :=
New_Reference_To (Defining_Entity (P), Loc);
P_Spec : Node_Id := P;
begin
if No (Parent_Spec (P)) then
-- Ancestor may have been rewritten as a package body. Retrieve
-- the original spec to trace earlier ancestors.
if Nkind (P) = N_Package_Body
and then Nkind (Original_Node (P)) = N_Package_Instantiation
then
P_Spec := Original_Node (P);
end if;
if No (Parent_Spec (P_Spec)) then
return P_Ref;
else
return
Make_Selected_Component (Loc,
Prefix => Build_Ancestor_Name (Unit (Parent_Spec (P))),
Prefix => Build_Ancestor_Name (Unit (Parent_Spec (P_Spec))),
Selector_Name => P_Ref);
end if;
end Build_Ancestor_Name;
@ -3139,16 +3150,24 @@ package body Sem_Ch10 is
-- Verify that a child of an instance is itself an instance, or
-- the renaming of one. Given that an instance that is a unit is
-- replaced with a package declaration, check against the original
-- node.
-- node. The parent may be currently being instantiated, in which
-- case it appears as a declaration, but the generic_parent is
-- already established indicating that we deal with an instance.
elsif Nkind (Original_Node (P)) = N_Package_Instantiation
and then Nkind (Lib_Unit)
not in N_Renaming_Declaration
and then Nkind (Original_Node (Lib_Unit))
not in N_Generic_Instantiation
then
Error_Msg_N
("child of an instance must be an instance or renaming", Lib_Unit);
elsif Nkind (Original_Node (P)) = N_Package_Instantiation then
if Nkind (Lib_Unit) in N_Renaming_Declaration
or else Nkind (Original_Node (Lib_Unit)) in N_Generic_Instantiation
or else
(Nkind (Lib_Unit) = N_Package_Declaration
and then Present (Generic_Parent (Specification (Lib_Unit))))
then
null;
else
Error_Msg_N
("child of an instance must be an instance or renaming",
Lib_Unit);
end if;
end if;
-- This is the recursive call that ensures all parents are loaded