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-- C650003.A
--
-- Grant of Unlimited Rights
--
-- The Ada Conformity Assessment Authority (ACAA) holds unlimited
-- rights in the software and documentation contained herein. Unlimited
-- rights are the same as those granted by the U.S. Government for older
-- parts of the Ada Conformity Assessment Test Suite, and are defined
-- in DFAR 252.227-7013(a)(19). By making this public release, the ACAA
-- intends to confer upon all recipients unlimited rights equal to those
-- held by the ACAA. These rights include rights to use, duplicate,
-- release or disclose the released technical data and computer software
-- in whole or in part, in any manner and for any purpose whatsoever, and
-- to have or permit others to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE ACAA MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--
-- Notice
--
-- The ACAA has created and maintains the Ada Conformity Assessment Test
-- Suite for the purpose of conformity assessments conducted in accordance
-- with the International Standard ISO/IEC 18009 - Ada: Conformity
-- assessment of a language processor. This test suite should not be used
-- to make claims of conformance unless used in accordance with
-- ISO/IEC 18009 and any applicable ACAA procedures.
--*
-- OBJECTIVE:
-- Check that reaching the "end return" of an extended_return_statement
-- that applies to a function causes the function to return.
--
-- Check that a simple return statement in the
-- handled_sequence_of_statements of an extended_return_statement
-- completes the extended_return_statement and causes the function to
-- return.
--
-- Check that completing an extended_return_statement that applies to
-- a function by an exit, goto, or exception propagation does not
-- cause the function to return.
--
-- TEST DESCRIPTION:
-- A series of constructor functions are defined that create limited
-- records. The functions use extended returns that return early
-- for some arguments.
--
-- Note that AI05-0058-1 clarifies the meaning of 6.5(22/2) to make it
-- clear that the third objective is intended.
--
-- CHANGE HISTORY:
-- 26 Mar 2008 RLB Created test.
-- 07 Nov 2008 RLB Corrected third test objective.
--
with Report;
procedure C650003 is
type Lim1 is limited record
Val : Natural;
Bool : Boolean;
end record;
function Construct (Val : in Natural) return Lim1 is
-- Check simple return in an extended return and "normal"
-- extended returns.
begin
return Obj : Lim1 do
Obj.Val := Val;
while Obj.Val >= 3 loop
Obj.Val := Obj.Val - 3;
if Obj.Val = 0 then
Obj.Val := Val;
Obj.Bool := True;
return;
end if;
end loop;
Obj.Val := Val;
if Val mod Report.Ident_Int(3) = 0 then
Report.Failed ("Simple return did not return for" & Natural'Image(Val));
end if;
Obj.Bool := Report.Ident_Bool(False);
end return;
Report.Failed ("Extended return did not return for" & Natural'Image(Val));
end Construct;
function Exit_Construct (Val : in Natural) return Lim1 is
-- Check exit in an extended return and a "normal" simple return.
Working : Natural := Val;
begin
Our_Loop: while Working >= 3 loop
Working := Working - 3;
return Obj : Lim1 do
Obj.Val := Val;
if Working = 0 then
Obj.Bool := True;
exit Our_Loop; -- Does not return!
end if;
Obj.Bool := Report.Ident_Bool(False);
if Working = Report.Ident_Int(0) then
Report.Failed ("Exit not executed for" & Natural'Image(Val));
end if;
end return;
end loop Our_Loop;
return (Val => Val, Bool => False);
Report.Failed ("Normal simple return did not return for" & Natural'Image(Val));
end Exit_Construct;
function Goto_Construct (Val : in Natural) return Lim1 is
-- Check goto in an extended return and a "normal" simple return.
begin
return Obj : Lim1 do
Obj.Val := Val;
if Report.Ident_Int(Val) mod 7 = 0 then
Obj.Bool := True;
goto Skip; -- Does not return!
end if;
Obj.Bool := Report.Ident_Bool(False);
if Val mod Report.Ident_Int(7) = 0 then
Report.Failed ("Goto not executed for" & Natural'Image(Val));
end if;
end return;
<<Skip>> null;
return (Val => Val, Bool => False);
Report.Failed ("Normal simple return did not return for" & Natural'Image(Val));
end Goto_Construct;
function Except_Construct (Val : in Natural) return Lim1 is
-- Check exceptions in an extended return and a "normal" simple return.
begin
return Obj : Lim1 do
Obj.Val := Val;
if Report.Ident_Int(Val) mod 4 = 0 then
Obj.Bool := True;
raise Program_Error; -- Does not return!
end if;
Obj.Bool := Report.Ident_Bool(False);
if Val mod Report.Ident_Int(4) = 0 then
Report.Failed ("Exception not raised for" & Natural'Image(Val));
end if;
end return;
Report.Failed ("Extended return did not return for" & Natural'Image(Val));
exception
when Program_Error =>
if Val mod Report.Ident_Int(4) /= 0 then
Report.Failed ("Exception raised for wrong case" & Natural'Image(Val));
end if;
return (Val => Val/2, Bool => False);
Report.Failed ("Normal simple return did not return for" & Natural'Image(Val));
end Except_Construct;
generic
type Disc is (<>);
package Gen is
type Lim2 is limited record
Val : Disc;
Bool : Boolean;
end record;
function Construct (Val : in Disc) return Lim2;
end Gen;
package body Gen is
function Construct (Val : in Disc) return Lim2 is
-- Check simple return in an extended return and "normal"
-- extended returns.
begin
return Obj : Lim2 do
Obj.Val := Val;
if Report.Ident_Int(Disc'Pos(Val)) mod 2 = 0 then
Obj.Bool := True;
return;
end if;
if Disc'Pos(Val) mod Report.Ident_Int(2) = 0 then
Report.Failed ("Simple return did not return for" & Disc'Image(Val));
end if;
Obj.Bool := Report.Ident_Bool(False);
end return;
Report.Failed ("Extended return did not return for" & Disc'Image(Val));
end Construct;
end Gen;
type Enum is (Zero, One, Two, Three);
package Inst is new Gen (Enum);
generic
Mod_Value : in Natural;
function Gen_Con (Val : in Natural) return Lim1;
function Gen_Con (Val : in Natural) return Lim1 is
-- Check simple return in an extended return and "normal"
-- extended returns in a generic function.
begin
return Obj : Lim1 do
Obj.Val := Val;
if Report.Ident_Int(Val) mod Mod_Value = 0 then
Obj.Bool := True;
return;
end if;
if Val mod Mod_Value = 0 then
Report.Failed ("Simple return did not return for" & Natural'Image(Val));
end if;
Obj.Bool := Report.Ident_Bool(False);
end return;
Report.Failed ("Extended return did not return for" & Natural'Image(Val));
end Gen_Con;
function Inst_Construct is new Gen_Con (Mod_Value => 5);
begin
Report.Test ("C650003", "Check that an extended return statement can be " &
"completed by a simple return statement; and that " &
"completing the extended return returns from the " &
"enclosing function");
declare
O1 : Lim1 := Construct (Val => 3);
O2 : Lim1 := Construct (Val => 8);
O3 : Inst.Lim2 := Inst.Construct (Val => One);
O4 : Inst.Lim2 := Inst.Construct (Val => Two);
O5 : Lim1 := Inst_Construct (Val => 5);
O6 : Lim1 := Inst_Construct (Val => 11);
O7 : Lim1 := Exit_Construct (Val => 6);
O8 : Lim1 := Exit_Construct (Val => 4);
O9 : Lim1 := Goto_Construct (Val => 7);
OA : Lim1 := Goto_Construct (Val => 9);
OB : Lim1 := Except_Construct (Val => 12);
OC : Lim1 := Except_Construct (Val => 13);
begin
if O1.Val /= 3 or (not O1.Bool) then
Report.Failed ("Wrong value for O1");
end if;
if O2.Val /= 8 or (O2.Bool) then
Report.Failed ("Wrong value for O2");
end if;
if O3.Val /= One or (O3.Bool) then
Report.Failed ("Wrong value for O3");
end if;
if O4.Val /= Two or (not O4.Bool) then
Report.Failed ("Wrong value for O4");
end if;
if O5.Val /= 5 or (not O5.Bool) then
Report.Failed ("Wrong value for O5");
end if;
if O6.Val /= 11 or (O6.Bool) then
Report.Failed ("Wrong value for O6");
end if;
if O7.Val /= 6 or (O7.Bool) then
Report.Failed ("Wrong value for O7 - exited return statement returned");
end if;
if O8.Val /= 4 or (O8.Bool) then
Report.Failed ("Wrong value for O8");
end if;
if O9.Val /= 7 or (O9.Bool) then
Report.Failed ("Wrong value for O9 - goto out of return statement " &
"returned");
end if;
if OA.Val /= 9 or (OA.Bool) then
Report.Failed ("Wrong value for OA");
end if;
if OB.Val /= 6 or (OB.Bool) then
Report.Failed ("Wrong value for OB - exception propagation out of " &
"return statement returned");
end if;
if OC.Val /= 13 or (OC.Bool) then
Report.Failed ("Wrong value for OC");
end if;
end;
Report.Result;
end C650003;
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