-- C641001.A -- -- Grant of Unlimited Rights -- -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained -- unlimited rights in the software and documentation contained herein. -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making -- this public release, the Government intends to confer upon all -- recipients unlimited rights equal to those held by the Government. -- 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 GOVERNMENT 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. --* -- -- OBJECTIVE: -- Check that actual parameters passed by reference are view converted -- to the nominal subtype of the formal parameter. -- -- TEST DESCRIPTION: -- Check that sliding is allowed for formal parameters, especially -- check cases that would have caused errors in Ada'83. -- Check that length check for a formal parameter (esp out mode) -- is performed before the call, not after. -- -- notes: 6.2; by reference ::= tagged, task, protected, -- limited (nonprivate), or composite containing such -- 4.6; view conversion -- -- -- CHANGE HISTORY: -- 26 JAN 96 SAIC Initial version -- 04 NOV 96 SAIC Commentary revision for release 2.1 -- 27 FEB 97 PWB.CTA Corrected reference to the wrong string --! ----------------------------------------------------------------- C641001_0 package C641001_0 is subtype String_10 is String(1..10); procedure Check_String_10( S : out String_10; Start, Stop: Natural ); procedure Check_Illegal_Slice_Reference( Slice_Passed : in out String; Index: Natural ); type Tagged_Data(Bound: Natural) is tagged record Data_Item : String(1..Bound) := (others => '*'); end record; type Tag_List is array(Natural range <>) of Tagged_Data(5); subtype Tag_List_10 is Tag_List(1..10); procedure Check_Tag_Slice( TL : in out Tag_List_10 ); procedure Check_Out_Tagged_Data( Formal : out Tagged_Data ); end C641001_0; -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- with Report; with TCTouch; package body C641001_0 is String_Data : constant String := "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ"; procedure Check_String_10( S : out String_10; Start, Stop: Natural ) is begin if S'Length /= 10 then Report.Failed("Length check not performed prior to execution"); end if; S := String_Data(Start..Stop); exception when others => Report.Failed("Exception encountered in Check_String_10"); end Check_String_10; procedure Check_Illegal_Slice_Reference( Slice_Passed : in out String; Index: Natural ) is begin -- essentially "do-nothing" for optimization foilage... if Slice_Passed(Index) in Character then -- Intent is ^^^^^ should raise Constraint_Error Report.Failed("Illegal Slice provided legal character"); else Report.Failed("Illegal Slice provided illegal character"); end if; exception when Constraint_Error => null; -- expected case when others => Report.Failed("Wrong exception in Check_Illegal_Slice_Reference"); end Check_Illegal_Slice_Reference; procedure Check_Tag_Slice( TL : in out Tag_List_10 ) is -- if the view conversion is not performed, one of the following checks -- will fail (given data passed as 0..9 and then 2..11) begin Check_Under_Index: -- index 0 should raise C_E begin TCTouch.Assert( TL(Report.Ident_Int(0)).Data_Item = "*****", "Index 0 (illegal); bad data" ); Report.Failed("Index 0 did not raise Constraint_Error"); exception when Constraint_Error => null; -- expected case when others => Report.Failed("Wrong exception in Check_Under_Index "); end Check_Under_Index; Check_Over_Index: -- index 11 should raise C_E begin TCTouch.Assert( TL(Report.Ident_Int(11)).Data_Item = "*****", "Index 11 (illegal); bad data" ); Report.Failed("Index 11 did not raise Constraint_Error"); exception when Constraint_Error => null; -- expected case when others => Report.Failed("Wrong exception in Check_Over_Index "); end Check_Over_Index; end Check_Tag_Slice; procedure Check_Out_Tagged_Data( Formal : out Tagged_Data ) is begin TCTouch.Assert( Formal.Data_Item = "*****", "out formal data bad" ); Formal.Data_Item(1) := '!'; end Check_Out_Tagged_Data; end C641001_0; ------------------------------------------------------------------- C641001 with Report; with TCTouch; with C641001_0; procedure C641001 is function II( I: Integer ) return Integer renames Report.Ident_Int; -- ^^ name chosen to allow embedding in calls A_String_10 : C641001_0.String_10; Slicable : String(1..40); Tag_Slices : C641001_0.Tag_List(0..11); Global_Data : String(1..26) := "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; procedure Check_Out_Sliding( Lo1, Hi1, Lo2, Hi2 : Natural ) is subtype One_Constrained_String is String(Lo1..Hi1); -- 1 5 subtype Two_Constrained_String is String(Lo2..Hi2); -- 6 10 procedure Out_Param( Param : out One_Constrained_String ) is begin Param := Report.Ident_Str( Global_Data(Lo2..Hi2) ); end Out_Param; Object : Two_Constrained_String; begin Out_Param( Object ); if Object /= Report.Ident_Str( Global_Data(Lo2..Hi2) ) then Report.Failed("Bad result in Check_Out_Sliding"); end if; exception when others => Report.Failed("Exception in Check_Out_Sliding"); end Check_Out_Sliding; procedure Check_Dynamic_Subtype_Cases(F_Lower,F_Upper: Natural; A_Lower,A_Upper: Natural) is subtype Dyn_String is String(F_Lower..F_Upper); procedure Check_Dyn_Subtype_Formal_Out( Param : out Dyn_String ) is begin Param := Global_Data(11..20); end Check_Dyn_Subtype_Formal_Out; procedure Check_Dyn_Subtype_Formal_In( Param : in Dyn_String ) is begin if Param /= Global_Data(11..20) then Report.Failed("Dynamic case, data mismatch"); end if; end Check_Dyn_Subtype_Formal_In; Stuff: String(A_Lower..A_Upper); begin Check_Dyn_Subtype_Formal_Out( Stuff ); Check_Dyn_Subtype_Formal_In( Stuff ); end Check_Dynamic_Subtype_Cases; begin -- Main test procedure. Report.Test ("C641001", "Check that actual parameters passed by " & "reference are view converted to the nominal " & "subtype of the formal parameter" ); -- non error cases for string slices C641001_0.Check_String_10( A_String_10, 1, 10 ); TCTouch.Assert( A_String_10 = "1234567890", "Nominal case" ); C641001_0.Check_String_10( A_String_10, 11, 20 ); TCTouch.Assert( A_String_10 = "ABCDEFGHIJ", "Sliding to subtype" ); C641001_0.Check_String_10( Slicable(1..10), 1, 10 ); TCTouch.Assert( Slicable(1..10) = "1234567890", "Slice, no sliding" ); C641001_0.Check_String_10( Slicable(1..10), 21, 30 ); TCTouch.Assert( Slicable(1..10) = "KLMNOPQRST", "Sliding to slice" ); C641001_0.Check_String_10( Slicable(11..20), 11, 20 ); TCTouch.Assert( Slicable(11..20) = "ABCDEFGHIJ", "Sliding to same" ); C641001_0.Check_String_10( Slicable(21..30), 11, 20 ); TCTouch.Assert( Slicable(21..30) = "ABCDEFGHIJ", "Sliding up" ); -- error cases for string slices C641001_0.Check_Illegal_Slice_Reference( Slicable(21..30), 20 ); C641001_0.Check_Illegal_Slice_Reference( Slicable(1..15), Slicable'Last ); -- checks for view converting actuals to formals -- catch low bound fault C641001_0.Check_Tag_Slice( Tag_Slices(II(0)..9) ); -- II ::= Ident_Int TCTouch.Assert( Tag_Slices'First = 0, "Tag_Slices'First = 0" ); TCTouch.Assert( Tag_Slices'Last = 11, "Tag_Slices'Last = 11" ); -- catch high bound fault C641001_0.Check_Tag_Slice( Tag_Slices(2..II(11)) ); TCTouch.Assert( Tag_Slices'First = 0, "Tag_Slices'First = 0" ); TCTouch.Assert( Tag_Slices'Last = 11, "Tag_Slices'Last = 11" ); Check_Formal_Association_Check: begin C641001_0.Check_String_10( Slicable, 1, 10 ); -- catch length fault Report.Failed("Exception not raised at Check_Formal_Association_Check"); exception when Constraint_Error => null; -- expected case when others => Report.Failed("Wrong exception at Check_Formal_Association_Check"); end Check_Formal_Association_Check; -- check for constrained actual, unconstrained formal C641001_0.Check_Out_Tagged_Data( Tag_Slices(5) ); TCTouch.Assert( Tag_Slices(5).Data_Item = "!****", "formal out returned bad result" ); -- additional checks for out mode formal parameters, dynamic subtypes Check_Out_Sliding( II(1),II(5), II(6),II(10) ); Check_Out_Sliding( 21,25, 6,10 ); Check_Dynamic_Subtype_Cases(F_Lower => II(1), F_Upper => II(10), A_Lower => II(1), A_Upper => II(10)); Check_Dynamic_Subtype_Cases(F_Lower => II(21), F_Upper => II(30), A_Lower => II( 1), A_Upper => II(10)); Check_Dynamic_Subtype_Cases(F_Lower => II( 1), F_Upper => II(10), A_Lower => II(21), A_Upper => II(30)); Report.Result; end C641001;