GENERIC
TYPE ELEMENT_TYPE IS PRIVATE;
PACKAGE CC3019A_QUEUES IS
TYPE QUEUE_TYPE IS PRIVATE;
PROCEDURE ADD (TO_Q : IN OUT QUEUE_TYPE;
VALUE : ELEMENT_TYPE);
GENERIC
WITH PROCEDURE APPLY (VAL : ELEMENT_TYPE);
PROCEDURE ITERATOR (TO_Q : QUEUE_TYPE);
PRIVATE
TYPE CONTENTS_TYPE IS ARRAY (1..3) OF ELEMENT_TYPE;
TYPE QUEUE_TYPE IS
RECORD
CONTENTS : CONTENTS_TYPE;
SIZE : NATURAL := 0;
END RECORD;
END CC3019A_QUEUES;
PACKAGE BODY CC3019A_QUEUES IS
PROCEDURE ADD (TO_Q : IN OUT QUEUE_TYPE;
VALUE : ELEMENT_TYPE) IS
BEGIN
TO_Q.SIZE := TO_Q.SIZE + 1;
TO_Q.CONTENTS(TO_Q.SIZE) := VALUE;
END ADD;
PROCEDURE ITERATOR (TO_Q : QUEUE_TYPE) IS
BEGIN
FOR I IN TO_Q.CONTENTS'FIRST .. TO_Q.SIZE LOOP
APPLY (TO_Q.CONTENTS(I));
END LOOP;
END ITERATOR;
END CC3019A_QUEUES;
WITH REPORT; USE REPORT;
WITH CC3019A_QUEUES;
PROCEDURE CC3019A IS
SUBTYPE STR6 IS STRING (1..6);
TYPE STR6_ARR IS ARRAY (1..3) OF STR6;
STR6_VALS : STR6_ARR := ("111111", "222222",
IDENT_STR("333333"));
CUR_STR_INDEX : NATURAL := 1;
TYPE INT_ARR IS ARRAY (1..3) OF INTEGER;
INT_VALS : INT_ARR := (-1, 3, IDENT_INT(3));
CUR_INT_INDEX : NATURAL := 1;
PROCEDURE CHECK_STR (VAL : STR6) IS
BEGIN
IF VAL /= STR6_VALS(CUR_STR_INDEX) THEN
FAILED ("STR6 ITERATOR FOR INDEX =" &
INTEGER'IMAGE(CUR_STR_INDEX) & " WITH VALUE " &
"""" & VAL & """");
END IF;
CUR_STR_INDEX := CUR_STR_INDEX + 1;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
FAILED ("STR6 - CONSTRAINT_ERROR RAISED");
WHEN OTHERS =>
FAILED ("STR6 - UNEXPECTED EXCEPTION");
END CHECK_STR;
PROCEDURE CHECK_INT (VAL : INTEGER) IS
BEGIN
IF VAL /= INT_VALS(CUR_INT_INDEX) THEN
FAILED ("INTEGER ITERATOR FOR INDEX =" &
INTEGER'IMAGE(CUR_INT_INDEX) & " WITH VALUE " &
"""" & INTEGER'IMAGE(VAL) & """");
END IF;
CUR_INT_INDEX := CUR_INT_INDEX + 1;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
FAILED ("INTEGER - CONSTRAINT_ERROR RAISED");
WHEN OTHERS =>
FAILED ("INTEGER - UNEXPECTED EXCEPTION");
END CHECK_INT;
PACKAGE STR6_QUEUE IS NEW CC3019A_QUEUES (STR6);
USE STR6_QUEUE;
PACKAGE INT_QUEUE IS NEW CC3019A_QUEUES (INTEGER);
USE INT_QUEUE;
BEGIN
TEST ("CC3019A", "CHECK NESTED GENERICS - ITERATORS");
DECLARE
Q1 : STR6_QUEUE.QUEUE_TYPE;
PROCEDURE CHK_STR IS NEW STR6_QUEUE.ITERATOR (CHECK_STR);
BEGIN
ADD (Q1, "111111");
ADD (Q1, "222222");
ADD (Q1, "333333");
CUR_STR_INDEX := 1;
CHK_STR (Q1);
EXCEPTION
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION - Q1");
END;
DECLARE
Q2 : INT_QUEUE.QUEUE_TYPE;
PROCEDURE CHK_INT IS NEW INT_QUEUE.ITERATOR (CHECK_INT);
BEGIN
ADD (Q2, -1);
ADD (Q2, 3);
ADD (Q2, 3);
CUR_INT_INDEX := 1;
CHK_INT (Q2);
EXCEPTION
WHEN OTHERS =>
FAILED ("UNEXPECTED EXCEPTION - Q2");
END;
RESULT;
END CC3019A;