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* [gcc r12-1877] [Ada] Rewrite Validated_View in recursive style
@ 2021-06-29 14:24 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2021-06-29 14:24 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:d23455ce238122c20c4fa81fa55eeb9ad1d938ee
commit r12-1877-gd23455ce238122c20c4fa81fa55eeb9ad1d938ee
Author: Piotr Trojanek <trojanek@adacore.com>
Date: Tue Apr 6 13:10:40 2021 +0200
[Ada] Rewrite Validated_View in recursive style
gcc/ada/
* sem_util.ads (Validated_View): Fix style in comment.
* sem_util.adb (Validated_View): Rewrite in recursive style.
Diff:
---
gcc/ada/sem_util.adb | 44 +++++++++++++++++++-------------------------
gcc/ada/sem_util.ads | 2 +-
2 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 479bb146b61..169825ec030 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -29471,42 +29471,36 @@ package body Sem_Util is
--------------------
function Validated_View (Typ : Entity_Id) return Entity_Id is
- Continue : Boolean;
- Val_Typ : Entity_Id;
-
begin
- Continue := True;
- Val_Typ := Base_Type (Typ);
-
-- Obtain the full view of the input type by stripping away concurrency,
-- derivations, and privacy.
- while Continue loop
- Continue := False;
-
- if Is_Concurrent_Type (Val_Typ) then
- if Present (Corresponding_Record_Type (Val_Typ)) then
- Continue := True;
- Val_Typ := Corresponding_Record_Type (Val_Typ);
+ if Is_Base_Type (Typ) then
+ if Is_Concurrent_Type (Typ) then
+ if Present (Corresponding_Record_Type (Typ)) then
+ return Corresponding_Record_Type (Typ);
+ else
+ return Typ;
end if;
- elsif Is_Derived_Type (Val_Typ) then
- Continue := True;
- Val_Typ := Etype (Val_Typ);
+ elsif Is_Derived_Type (Typ) then
+ return Validated_View (Etype (Typ));
- elsif Is_Private_Type (Val_Typ) then
- if Present (Underlying_Full_View (Val_Typ)) then
- Continue := True;
- Val_Typ := Underlying_Full_View (Val_Typ);
+ elsif Is_Private_Type (Typ) then
+ if Present (Underlying_Full_View (Typ)) then
+ return Validated_View (Underlying_Full_View (Typ));
- elsif Present (Full_View (Val_Typ)) then
- Continue := True;
- Val_Typ := Full_View (Val_Typ);
+ elsif Present (Full_View (Typ)) then
+ return Validated_View (Full_View (Typ));
+ else
+ return Typ;
end if;
end if;
- end loop;
- return Val_Typ;
+ return Typ;
+ else
+ return Validated_View (Base_Type (Typ));
+ end if;
end Validated_View;
-----------------------
diff --git a/gcc/ada/sem_util.ads b/gcc/ada/sem_util.ads
index a1ed43cba43..f9db80ea496 100644
--- a/gcc/ada/sem_util.ads
+++ b/gcc/ada/sem_util.ads
@@ -3290,7 +3290,7 @@ package Sem_Util is
function Validated_View (Typ : Entity_Id) return Entity_Id;
-- Obtain the "validated view" of arbitrary type Typ which is suitable for
- -- verification by attributes 'Valid_Scalars. This view is the type itself
+ -- verification by attribute 'Valid_Scalars. This view is the type itself
-- or its full view while stripping away concurrency, derivations, and
-- privacy.
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