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[Ada] Replace variables with constants in expanded code for task names

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Using constants instead of variables is cleaner both in human-written
and auto-generated code.

Cleanup related to handling of character values in SPARK
counterexamples, which just like the code for names of tasks create
N_Character_Literal nodes.

gcc/ada/

	* exp_util.adb (Build_Task_Array_Image): Declare expanded
	objects as constants.
	(Build_Task_Image_Prefix): Likewise.
	(Build_Task_Record_Image): Likewise.
This commit is contained in:
Piotr Trojanek 2022-01-19 13:35:46 +01:00 committed by Pierre-Marie de Rodat
parent 5046228671
commit d979a676fd
1 changed files with 12 additions and 6 deletions
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18
gcc/ada/exp_util.adb
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@ -4049,11 +4049,13 @@ package body Exp_Util is
-- function F return String is
-- Pref : String renames Task_Name;
-- T1 : String := Index1'Image (Val1);
-- T1 : constant String := Index1'Image (Val1);
-- ...
-- Tn : String := Indexn'Image (Valn);
-- Len : Integer := Pref'Length + T1'Length + ... + Tn'Length + n + 1;
-- Tn : constant String := Indexn'Image (Valn);
-- Len : constant Integer :=
-- Pref'Length + T1'Length + ... + Tn'Length + n + 1;
-- -- Len includes commas and the end parentheses
--
-- Res : String (1 .. Len);
-- Pos : Integer := Pref'Length;
--
@ -4124,8 +4126,9 @@ package body Exp_Util is
Append_To (Decls,
Make_Object_Declaration (Loc,
Defining_Identifier => Pref,
Object_Definition => New_Occurrence_Of (Standard_String, Loc),
Expression =>
Constant_Present => True,
Object_Definition => New_Occurrence_Of (Standard_String, Loc),
Expression =>
Make_String_Literal (Loc,
Strval => String_From_Name_Buffer)));
@ -4148,6 +4151,7 @@ package body Exp_Util is
Make_Object_Declaration (Loc,
Defining_Identifier => T,
Object_Definition => New_Occurrence_Of (Standard_String, Loc),
Constant_Present => True,
Expression =>
Make_Attribute_Reference (Loc,
Attribute_Name => Name_Image,
@ -4425,6 +4429,7 @@ package body Exp_Util is
Append_To (Decls,
Make_Object_Declaration (Loc,
Defining_Identifier => Len,
Constant_Present => True,
Object_Definition => New_Occurrence_Of (Standard_Integer, Loc),
Expression => Sum));
@ -4530,7 +4535,8 @@ package body Exp_Util is
Append_To (Decls,
Make_Object_Declaration (Loc,
Defining_Identifier => Pref,
Object_Definition => New_Occurrence_Of (Standard_String, Loc),
Constant_Present => True,
Object_Definition => New_Occurrence_Of (Standard_String, Loc),
Expression =>
Make_String_Literal (Loc,
Strval => String_From_Name_Buffer)));