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Diffstat (limited to 'gcc-4.9/gcc/testsuite/ada/acats/tests/c8/c840001.a')
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diff --git a/gcc-4.9/gcc/testsuite/ada/acats/tests/c8/c840001.a b/gcc-4.9/gcc/testsuite/ada/acats/tests/c8/c840001.a new file mode 100644 index 000000000..2a1df1640 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/ada/acats/tests/c8/c840001.a @@ -0,0 +1,257 @@ +-- C840001.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, for the type determined by the subtype mark of a use type +-- clause, the declaration of each primitive operator is use-visible +-- within the scope of the clause, even if explicit operators with the +-- same names as the type's operators are declared for the subtype. Check +-- that a call to such an operator executes the body of the type's +-- operation. +-- +-- TEST DESCRIPTION: +-- A type may declare a primitive operator, and a subtype of that type +-- may overload the operator. If a use type clause names the subtype, +-- it is the primitive operator of the type (not the subtype) which +-- is made directly visible, and the primitive operator may be called +-- unambiguously. Such a call executes the body of the type's operation. +-- +-- In a package, declare a type for which a predefined operator is +-- overridden. In another package, declare a subtype of the type in the +-- previous package. Declare another version of the predefined operator +-- for the subtype. +-- +-- The main program declares objects of both the type and the explicit +-- subtype, and uses the "**" operator for both. In all cases, the +-- operator declared for the 1st subtype should be the one executed, +-- since it is the primitive operators of the *type* that are made +-- visible; the operators which were declared for the explicit subtype +-- are not primitive operators of the type, since they were declared in +-- a separate package from the original type. +-- +-- +-- CHANGE HISTORY: +-- 06 Dec 94 SAIC ACVC 2.0 +-- 23 Sep 99 RLB Added test case where operator made visible is +-- not visible by selection (as in AI-00122). +-- +--! + +package C840001_0 is +-- Usage scenario: the predefined operators for a floating point type +-- are overridden in order to take advantage of improved algorithms. + + type Precision_Float is new Float range -100.0 .. 100.0; + -- Implicit: function "**" (Left: Precision_Float; Right: Integer'Base) + -- return Precision_Float; + + function "**" (Left: Precision_Float; Right: Integer'Base) + return Precision_Float; + -- Overrides predefined operator. + + function "+" (Right: Precision_Float) + return Precision_Float; + -- Overrides predefined operator. + + -- ... Other overridden operations. + + TC_Expected : constant Precision_Float := 68.0; + +end C840001_0; + + + --==================================================================-- + +package body C840001_0 is + + function "**" (Left: Precision_Float; Right: Integer'Base) + return Precision_Float is + begin + -- ... Utilize desired algorithm. + return (TC_Expected); -- Artificial for testing purposes. + end "**"; + + function "+" (Right: Precision_Float) + return Precision_Float is + -- Overrides predefined operator. + begin + return Right*2.0; + end "+"; + +end C840001_0; + + + --==================================================================-- + +-- Take advantage of some even better algorithms designed for positive +-- floating point values. + +with C840001_0; +package C840001_1 is + + subtype Precision_Pos_Float is C840001_0.Precision_Float + range 0.0 .. 100.0; + +-- This is not a new type, so it has no primitives of it own. However, it +-- can declare another version of the operator and call it as long as both it +-- and the corresponding operator of the 1st subtype are not directly visible +-- in the same place. + + function "**" (Left: Precision_Pos_Float; Right: Natural'Base) + return Precision_Pos_Float; -- Accepts only positive exponent. + +end C840001_1; + + + --==================================================================-- + +package body C840001_1 is + + function "**" (Left: Precision_Pos_Float; Right: Natural'Base) + return Precision_Pos_Float is + begin + -- ... Utilize some other algorithms. + return 57.0; -- Artificial for testing purposes. + end "**"; + +end C840001_1; + + + --==================================================================-- + +with Report; +with C840001_1; +procedure C840001_2 is + + -- Note that C840001_0 and it's contents is not visible in any form here. + + TC_Operand : C840001_1.Precision_Pos_Float := 41.0; + + TC_Operand2 : C840001_1.Precision_Pos_Float; + + use type C840001_1.Precision_Pos_Float; + -- Makes the operators of its parent type directly visible, even though + -- the parent type and operators are not otherwise visible at all. + +begin + + TC_Operand2 := +TC_Operand; -- Overridden operator is visible and called. + + if TC_Operand2 /= 82.0 then -- Predefined equality. + Report.Failed ("3rd test: type's overridden operation not called for " & + "operand of 1st subtype"); + end if; + if TC_Operand + 3.0 >= TC_Operand2 - 13.0 then -- Various predefined operators. + Report.Failed ("3rd test: wrong result from predefined operators"); + end if; + +end C840001_2; + + --==================================================================-- + + +with C840001_0; +with C840001_1; +with C840001_2; + +with Report; + +procedure C840001 is + +begin + Report.Test ("C840001", "Check that, for the type determined by the " & + "subtype mark of a use type clause, the declaration of " & + "each primitive operator is use-visible within the scope " & + "of the clause, even if explicit operators with the same " & + "names as the type's operators are declared for the subtype"); + + + Use_Type_Precision_Pos_Float: + declare + TC_Operand : C840001_0.Precision_Float + := C840001_0.Precision_Float(-2.0); + TC_Positive_Operand : C840001_1.Precision_Pos_Float := 6.0; + + TC_Actual_Type : C840001_0.Precision_Float; + TC_Actual_Subtype : C840001_1.Precision_Pos_Float; + + use type C840001_1.Precision_Pos_Float; + -- Both calls to "**" should return 68.0 (that is, Precision_Float's + -- operation should be called). + + begin + + TC_Actual_Type := TC_Operand**2; + + if C840001_0."/="(TC_Actual_Type, C840001_0.TC_Expected) then + Report.Failed ("1st block: type's operation not called for " & + "operand of 1st subtype"); + end if; + + TC_Actual_Subtype := TC_Positive_Operand**2; + + if not (C840001_0."=" + (TC_Actual_Subtype, C840001_0.TC_Expected)) then + Report.Failed ("1st block: type's operation not called for " & + "operand of explicit subtype"); + end if; + + end Use_Type_Precision_Pos_Float; + + Use_Type_Precision_Float: + declare + TC_Operand : C840001_0.Precision_Float + := C840001_0.Precision_Float(4.0); + TC_Positive_Operand : C840001_1.Precision_Pos_Float := 7.0; + + TC_Actual_Type : C840001_0.Precision_Float; + TC_Actual_Subtype : C840001_1.Precision_Pos_Float; + + use type C840001_0.Precision_Float; + -- Again, both calls to "**" should return 68.0. + + begin + + TC_Actual_Type := TC_Operand**2; + + if C840001_0."/="(TC_Actual_Type, C840001_0.TC_Expected) then + Report.Failed ("2nd block: type's operation not called for " & + "operand of 1st subtype"); + end if; + + TC_Actual_Subtype := TC_Positive_Operand**2; + + if not C840001_0."=" (TC_Actual_Subtype, C840001_0.TC_Expected) then + Report.Failed ("2nd block: type's operation not called for " & + "operand of explicit subtype"); + end if; + + end Use_Type_Precision_Float; + + C840001_2; -- 3rd test. + + Report.Result; + +end C840001; |