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|
-- C37213F.ADA
-- 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.
--*
-- CHECK THAT IF
-- A DISCRIMINANT CONSTRAINT
-- DEPENDS ON A DISCRIMINANT, THE NON-DISCRIMINANT EXPRESSIONS IN THE
-- CONSTRAINT ARE EVALUATED WHEN THE COMPONENT SUBTYPE DEFINITION IS
-- ELABORATED, BUT THE VALUES ARE CHECKED WHEN THE RECORD TYPE IS:
--
-- CASE D: USED WITHOUT A CONSTRAINT ONLY IN AN ALLOCATOR OR OBJECT
-- DECLARATION AND THE COMPONENT IS PRESENT IN THE DEFAULT SUBTYPE.
-- JBG 10/17/86
WITH REPORT; USE REPORT;
PROCEDURE C37213F IS
SUBTYPE SM IS INTEGER RANGE 1..10;
TYPE REC (D1, D2 : SM) IS
RECORD NULL; END RECORD;
F1_CONS : INTEGER := 2;
FUNCTION CHK (
CONS : INTEGER;
VALUE : INTEGER;
MESSAGE : STRING) RETURN BOOLEAN IS
BEGIN
IF CONS /= VALUE THEN
FAILED (MESSAGE & ": CONS IS " &
INTEGER'IMAGE(CONS));
END IF;
RETURN TRUE;
END CHK;
FUNCTION F1 RETURN INTEGER IS
BEGIN
F1_CONS := F1_CONS - IDENT_INT(1);
RETURN F1_CONS;
END F1;
BEGIN
TEST ("C37213F", "CHECK EVALUATION OF DISCRIMINANT EXPRESSIONS " &
"WHEN CONSTRAINT DEPENDS ON DISCRIMINANT, " &
"DISCRIMINANTS HAVE DEFAULTS, AND COMPONENT" &
"SUBTYPE DETERMINES WHETHER CONSTRAINT SHOULD " &
"BE CHECKED");
-- CASE D1: COMPONENT IS PRESENT
DECLARE
TYPE CONS (D3 : INTEGER := IDENT_INT(1)) IS
RECORD
CASE D3 IS
WHEN -5..10 =>
C1 : REC (D3, F1); -- F1 EVALUATED
WHEN OTHERS =>
C2 : INTEGER := IDENT_INT(0);
END CASE;
END RECORD;
CHK1 : BOOLEAN := CHK (F1_CONS, 1, "F1 NOT EVALUATED");
X : CONS; -- F1 NOT EVALUATED AGAIN
Y : CONS; -- F1 NOT EVALUATED AGAIN
CHK2 : BOOLEAN := CHK (F1_CONS, 1, "F1 EVALUATED");
BEGIN
IF X /= (1, (1, 1)) OR Y /= (1, (1, 1)) THEN
FAILED ("DISCRIMINANT VALUES NOT CORRECT");
END IF;
END;
F1_CONS := 12;
DECLARE
TYPE CONS (D3 : INTEGER := IDENT_INT(1)) IS
RECORD
CASE D3 IS
WHEN -5..10 =>
C1 : REC(D3, F1);
WHEN OTHERS =>
C2 : INTEGER := IDENT_INT(0);
END CASE;
END RECORD;
BEGIN
BEGIN
DECLARE
X : CONS;
BEGIN
FAILED ("DISCRIMINANT CHECK NOT PERFORMED - 1");
IF X /= (1, (1, 1)) THEN
COMMENT ("SHOULDN'T GET HERE");
END IF;
END;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION - 1");
END;
BEGIN
DECLARE
TYPE ACC_CONS IS ACCESS CONS;
X : ACC_CONS;
BEGIN
X := NEW CONS;
FAILED ("DISCRIMINANT CHECK NOT PERFORMED - 2");
IF X.ALL /= (1, (1, 1)) THEN
COMMENT ("IRRELEVANT");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION RAISED - 2A");
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION RAISED - 2B");
END;
BEGIN
DECLARE
SUBTYPE SCONS IS CONS;
BEGIN
DECLARE
X : SCONS;
BEGIN
FAILED ("DISCRIMINANT CHECK NOT " &
"PERFORMED - 3");
IF X /= (1, (1, 1)) THEN
COMMENT ("IRRELEVANT");
END IF;
END;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION RAISED - 3");
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("CONSTRAINT CHECKED TOO SOON - 3");
END;
BEGIN
DECLARE
TYPE ARR IS ARRAY (1..5) OF CONS;
BEGIN
DECLARE
X : ARR;
BEGIN
FAILED ("DISCRIMINANT CHECK NOT " &
"PERFORMED - 4");
IF X /= (1..5 => (1, (1, 1))) THEN
COMMENT ("IRRELEVANT");
END IF;
END;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION RAISED - 4");
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("CONSTRAINT CHECKED TOO SOON - 4");
END;
BEGIN
DECLARE
TYPE NREC IS
RECORD
C1 : CONS;
END RECORD;
BEGIN
DECLARE
X : NREC;
BEGIN
FAILED ("DISCRIMINANT CHECK NOT " &
"PERFORMED - 5");
IF X /= (C1 => (1, (1, 1))) THEN
COMMENT ("IRRELEVANT");
END IF;
END;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION RAISED - 5");
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("CONSTRAINT CHECKED TOO SOON - 5");
END;
BEGIN
DECLARE
TYPE DREC IS NEW CONS;
BEGIN
DECLARE
X : DREC;
BEGIN
FAILED ("DISCRIMINANT CHECK NOT " &
"PERFORMED - 6");
IF X /= (1, (1, 1)) THEN
COMMENT ("IRRELEVANT");
END IF;
END;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION RAISED - 6");
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("CONSTRAINT CHECKED TOO SOON - 6");
END;
END;
-- CASE C2 : COMPONENT IS ABSENT
F1_CONS := 2;
DECLARE
TYPE CONS (D3 : INTEGER := IDENT_INT(-6)) IS
RECORD
CASE D3 IS
WHEN -5..10 =>
C1 : REC (D3, F1); -- F1 EVALUATED
WHEN OTHERS =>
C2 : INTEGER := IDENT_INT(0);
END CASE;
END RECORD;
CHK1 : BOOLEAN := CHK (F1_CONS, 1, "F1 NOT EVALUATED - 2");
X : CONS; -- F1 NOT EVALUATED AGAIN
Y : CONS; -- F1 NOT EVALUATED AGAIN
CHK2 : BOOLEAN := CHK (F1_CONS, 1, "F1 EVALUATED - 2");
BEGIN
IF X /= (-6, 0) OR Y /= (-6, 0) THEN
FAILED ("DISCRIMINANT VALUES NOT CORRECT");
END IF;
END;
F1_CONS := 12;
DECLARE
TYPE CONS (D3 : INTEGER := IDENT_INT(11)) IS
RECORD
CASE D3 IS
WHEN -5..10 =>
C1 : REC(D3, F1);
WHEN OTHERS =>
C2 : INTEGER := IDENT_INT(0);
END CASE;
END RECORD;
BEGIN
BEGIN
DECLARE
X : CONS;
BEGIN
IF X /= (11, 0) THEN
FAILED ("WRONG VALUE FOR X - 11");
END IF;
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("NONEXISTENT CONSTRAINT CHECKED - 11");
END;
BEGIN
DECLARE
SUBTYPE SCONS IS CONS;
BEGIN
DECLARE
X : SCONS;
BEGIN
IF X /= (11, 0) THEN
FAILED ("X VALUE WRONG - 12");
END IF;
END;
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("NONEXISTENT CONSTRAINT CHECKED - 12");
END;
BEGIN
DECLARE
TYPE ARR IS ARRAY (1..5) OF CONS;
X : ARR;
BEGIN
IF X /= (1..5 => (11, 0)) THEN
FAILED ("X VALUE INCORRECT - 13");
END IF;
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("NONEXISTENT CONSTRAINT CHECKED - 13");
END;
BEGIN
DECLARE
TYPE NREC IS
RECORD
C1 : CONS;
END RECORD;
X : NREC;
BEGIN
IF X /= (C1 => (11, 0)) THEN
FAILED ("X VALUE IS INCORRECT - 14");
END IF;
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("NONEXISTENT CONSTRAINT CHECKED - 14");
END;
BEGIN
DECLARE
TYPE NREC IS NEW CONS;
X : NREC;
BEGIN
IF X /= (11, 0) THEN
FAILED ("X VALUE INCORRECT - 15");
END IF;
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("NONEXISTENT CONSTRAINT CHECKED - 15");
END;
BEGIN
DECLARE
TYPE ACC_CONS IS ACCESS CONS;
X : ACC_CONS := NEW CONS;
BEGIN
IF X.ALL /= (11, 0) THEN
FAILED ("X VALUE INCORRECT - 17");
END IF;
END;
EXCEPTION
WHEN OTHERS =>
FAILED ("NONEXISTENT CONSTRAINT CHECKED - 17");
END;
END;
RESULT;
EXCEPTION
WHEN OTHERS =>
FAILED ("CONSTRAINT CHECK DONE TOO EARLY");
RESULT;
END C37213F;
|
