-- C760007.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 Adjust is called for the execution of a return -- statement for a function returning a result of a (non-limited) -- controlled type. -- -- Check that Adjust is called when evaluating an aggregate -- component association for a controlled component. -- -- Check that Adjust is called for the assignment of the ancestor -- expression of an extension aggregate when the type of the -- aggregate is controlled. -- -- TEST DESCRIPTION: -- A type is derived from Ada.Finalization.Controlled; the dispatching -- procedure Adjust is defined for the new type. Structures and -- subprograms to model the test objectives are used to check that -- Adjust is called at the right time. For the sake of simplicity, -- globally accessible data is used to check that the calls are made. -- -- -- CHANGE HISTORY: -- 06 DEC 94 SAIC ACVC 2.0 -- 14 OCT 95 SAIC Update and repair for ACVC 2.0.1 -- 05 APR 96 SAIC Add RM reference -- 06 NOV 96 SAIC Reduce adjust requirement -- 25 NOV 97 EDS Allowed zero calls to adjust at line 144 --! ---------------------------------------------------------------- C760007_0 with Ada.Finalization; package C760007_0 is type Controlled is new Ada.Finalization.Controlled with record TC_ID : Natural := Natural'Last; end record; procedure Adjust( Object: in out Controlled ); type Structure is record Controlled_Component : Controlled; end record; type Child is new Controlled with record TC_XX : Natural := Natural'Last; end record; procedure Adjust( Object: in out Child ); Adjust_Count : Natural := 0; Child_Adjust_Count : Natural := 0; end C760007_0; package body C760007_0 is procedure Adjust( Object: in out Controlled ) is begin Adjust_Count := Adjust_Count +1; end Adjust; procedure Adjust( Object: in out Child ) is begin Child_Adjust_Count := Child_Adjust_Count +1; end Adjust; end C760007_0; ------------------------------------------------------------------ C760007 with Report; with C760007_0; procedure C760007 is procedure Check_Adjust_Count(Message: String; Min: Natural := 1; Max: Natural := 2) is begin -- in order to allow for the anonymous objects referred to in -- the reference manual, the check for calls to Adjust must be -- in a range. This number must then be further adjusted -- to allow for the optimization that does not call for an adjust -- of an aggregate initial value built directly in the object if C760007_0.Adjust_Count not in Min..Max then Report.Failed(Message & " = " & Natural'Image(C760007_0.Adjust_Count)); end if; C760007_0.Adjust_Count := 0; end Check_Adjust_Count; procedure Check_Child_Adjust_Count(Message: String; Min: Natural := 1; Max: Natural := 2) is begin -- ditto above if C760007_0.Child_Adjust_Count not in Min..Max then Report.Failed(Message & " = " & Natural'Image(C760007_0.Child_Adjust_Count)); end if; C760007_0.Child_Adjust_Count := 0; end Check_Child_Adjust_Count; Object : C760007_0.Controlled; -- Check that Adjust is called for the execution of a return -- statement for a function returning a result of a (non-limited) -- controlled type or a result of a noncontrolled type with -- controlled components. procedure Subtest_1 is function Create return C760007_0.Controlled is New_Object : C760007_0.Controlled; begin return New_Object; end Create; procedure Examine( Thing : in C760007_0.Controlled ) is begin Check_Adjust_Count("Function call passed as parameter",0); end Examine; begin -- this assignment must call Adjust: -- 1: on the value resulting from the function -- ** unless this is optimized out by building the result directly -- in the target object. -- 2: on Object once it's been assigned -- may call adjust -- 1: for a anonymous object created in the evaluation of the function -- 2: for a anonymous object created in the assignment operation Object := Create; Check_Adjust_Count("Function call",1,4); Examine( Create ); end Subtest_1; -- Check that Adjust is called when evaluating an aggregate -- component association for a controlled component. procedure Subtest_2 is S : C760007_0.Structure; procedure Examine( Thing : in C760007_0.Structure ) is begin Check_Adjust_Count("Aggregate passed as parameter"); end Examine; begin -- this assignment must call Adjust: -- 1: on the value resulting from the aggregate -- ** unless this is optimized out by building the result directly -- in the target object. -- 2: on Object once it's been assigned -- may call adjust -- 1: for a anonymous object created in the evaluation of the aggregate -- 2: for a anonymous object created in the assignment operation S := ( Controlled_Component => Object ); Check_Adjust_Count("Aggregate and Assignment", 1, 4); Examine( C760007_0.Structure'(Controlled_Component => Object) ); end Subtest_2; -- Check that Adjust is called for the assignment of the ancestor -- expression of an extension aggregate when the type of the -- aggregate is controlled. procedure Subtest_3 is Bambino : C760007_0.Child; procedure Examine( Thing : in C760007_0.Child ) is begin Check_Adjust_Count("Extension aggregate as parameter (ancestor)", 0, 2); Check_Child_Adjust_Count("Extension aggregate as parameter", 0, 4); end Examine; begin -- implementation permissions make all of the following calls to adjust -- optional: -- these assignments may call Adjust: -- 1: on the value resulting from the aggregate -- 2: on Object once it's been assigned -- 3: for a anonymous object created in the evaluation of the aggregate -- 4: for a anonymous object created in the assignment operation Bambino := ( Object with TC_XX => 10 ); Check_Adjust_Count("Ancestor (expression) part of aggregate", 0, 2); Check_Child_Adjust_Count("Child aggregate assignment 1", 0, 4 ); Bambino := ( C760007_0.Controlled with TC_XX => 11 ); Check_Adjust_Count("Ancestor (subtype_mark) part of aggregate", 0, 2); Check_Child_Adjust_Count("Child aggregate assignment 2", 0, 4 ); Examine( ( Object with TC_XX => 21 ) ); Examine( ( C760007_0.Controlled with TC_XX => 37 ) ); end Subtest_3; begin -- Main test procedure. Report.Test ("C760007", "Check that Adjust is called for the " & "execution of a return statement for a " & "function returning a result containing a " & "controlled type. Check that Adjust is " & "called when evaluating an aggregate " & "component association for a controlled " & "component. " & "Check that Adjust is called for the " & "assignment of the ancestor expression of an " & "extension aggregate when the type of the " & "aggregate is controlled" ); Subtest_1; Subtest_2; Subtest_3; Report.Result; end C760007;