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-- CC3019B2M.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 INSTANTIATIONS OF UNITS WITHIN GENERIC UNITS, E.G.,

--  TO SUPPORT ITERATORS. THIS TEST SPECIFICALLY CHECKS THAT A

--  NESTING LEVEL OF 2 IS SUPPORTED FOR GENERICS.

--

--  *** THIS IS THE MAIN PROGRAM. IT MUST BE COMPILED AFTER THE

--  *** SOURCE CODE IN FILES CC3019B0.ADA AND CC3019B1.ADA HAVE

--  *** BEEN COMPILED.

--

-- HISTORY:

--         EDWARD V. BERARD, 31 AUGUST 1990

WITH REPORT ;

WITH CC3019B1_STACK_CLASS ;

PROCEDURE CC3019B2M IS

     TYPE MONTH_TYPE IS (JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG,

                         SEP, OCT, NOV, DEC) ;

     TYPE DAY_TYPE IS RANGE 1 .. 31 ;

     TYPE YEAR_TYPE IS RANGE 1904 .. 2050 ;

     TYPE DATE IS RECORD

          MONTH : MONTH_TYPE ;

          DAY   : DAY_TYPE ;

          YEAR  : YEAR_TYPE ;

     END RECORD ;

     STORE_DATE     : DATE ;

     TODAY        : DATE := (MONTH => AUG,

                             DAY   => 31,

                             YEAR  => 1990) ;

     FIRST_DATE   : DATE := (MONTH => JUN,

                             DAY   => 4,

                             YEAR  => 1967) ;

     BIRTH_DATE   : DATE := (MONTH => OCT,

                             DAY   => 3,

                             YEAR  => 1949) ;

     WALL_DATE    : DATE := (MONTH => NOV,

                             DAY   => 9,

                             YEAR  => 1989) ;

     PROCEDURE ASSIGN (THE_VALUE_OF_THIS_DATE    : IN OUT DATE ;

                       TO_THIS_DATE              : IN OUT DATE) ;

     FUNCTION IS_EQUAL (LEFT  : IN DATE ;

                        RIGHT : IN DATE) RETURN BOOLEAN ;

     PACKAGE DATE_STACK IS

          NEW CC3019B1_STACK_CLASS (ELEMENT => DATE,

                                    ASSIGN  => ASSIGN,

                                    "="     => IS_EQUAL) ;

     FIRST_DATE_STACK    : DATE_STACK.STACK ;

     SECOND_DATE_STACK   : DATE_STACK.STACK ;

     THIRD_DATE_STACK    : DATE_STACK.STACK ;

     FUNCTION "=" (LEFT  : IN DATE_STACK.STACK ;

                   RIGHT : IN DATE_STACK.STACK) RETURN BOOLEAN

                   RENAMES DATE_STACK."=" ;

     PROCEDURE ASSIGN (THE_VALUE_OF_THIS_DATE    : IN OUT DATE ;

                       TO_THIS_DATE              : IN OUT DATE) IS

     BEGIN -- ASSIGN

          TO_THIS_DATE := THE_VALUE_OF_THIS_DATE ;

     END ASSIGN ;

     FUNCTION IS_EQUAL (LEFT  : IN DATE ;

                        RIGHT : IN DATE) RETURN BOOLEAN IS

     BEGIN -- IS_EQUAL

          RETURN (LEFT.MONTH = RIGHT.MONTH) AND

                 (LEFT.DAY = RIGHT.DAY) AND

                 (LEFT.YEAR = RIGHT.YEAR) ;

     END IS_EQUAL ;

BEGIN  -- CC3019B2M

     REPORT.TEST ("CC3019B2M",

                  "CHECK INSTANTIATIONS OF UNITS WITHIN GENERIC " &

                  "UNITS, E.G., TO SUPPORT ITERATORS. THIS TEST " &

                  "SPECIFICALLY CHECKS THAT A NESTING LEVEL OF " &

                  "2 IS SUPPORTED FOR GENERICS.") ;

     DATE_STACK.CLEAR (THIS_STACK => FIRST_DATE_STACK) ;

     IF DATE_STACK.NUMBER_OF_ELEMENTS

        (ON_THIS_STACK => FIRST_DATE_STACK) /= 0 THEN

          REPORT.FAILED (

               "IMPROPER VALUE RETURNED FROM NUMBER_OF_ELEMENTS - 1") ;

     END IF ;

     DATE_STACK.PUSH (THIS_ELEMENT     => TODAY,

                      ON_TO_THIS_STACK => FIRST_DATE_STACK) ;

     IF DATE_STACK.NUMBER_OF_ELEMENTS

        (ON_THIS_STACK => FIRST_DATE_STACK) /= 1 THEN

          REPORT.FAILED (

               "IMPROPER VALUE RETURNED FROM NUMBER_OF_ELEMENTS - 2") ;

     END IF ;

     DATE_STACK.PUSH (THIS_ELEMENT     => FIRST_DATE,

                      ON_TO_THIS_STACK => FIRST_DATE_STACK) ;

     IF DATE_STACK.NUMBER_OF_ELEMENTS

        (ON_THIS_STACK => FIRST_DATE_STACK) /= 2 THEN

          REPORT.FAILED (

               "IMPROPER VALUE RETURNED FROM NUMBER_OF_ELEMENTS - 3") ;

     END IF ;

     DATE_STACK.PUSH (THIS_ELEMENT     => BIRTH_DATE,

                      ON_TO_THIS_STACK => FIRST_DATE_STACK) ;

     IF DATE_STACK.NUMBER_OF_ELEMENTS

        (ON_THIS_STACK => FIRST_DATE_STACK) /= 3 THEN

          REPORT.FAILED (

               "IMPROPER VALUE RETURNED FROM NUMBER_OF_ELEMENTS - 4") ;

     END IF ;

     DATE_STACK.POP (THIS_ELEMENT   => STORE_DATE,

                           OFF_THIS_STACK => FIRST_DATE_STACK) ;

     IF DATE_STACK.NUMBER_OF_ELEMENTS

        (ON_THIS_STACK => FIRST_DATE_STACK) /= 2 THEN

          REPORT.FAILED (

               "IMPROPER VALUE RETURNED FROM NUMBER_OF_ELEMENTS - 5") ;

     END IF ;

     IF STORE_DATE /= BIRTH_DATE THEN

          REPORT.FAILED (

               "IMPROPER VALUE REMOVED FROM STACK - 1") ;

     END IF ;

     DATE_STACK.CLEAR (THIS_STACK => SECOND_DATE_STACK) ;

     IF DATE_STACK.NUMBER_OF_ELEMENTS

        (ON_THIS_STACK => SECOND_DATE_STACK) /= 0 THEN

          REPORT.FAILED (

               "IMPROPER VALUE RETURNED FROM NUMBER_OF_ELEMENTS - 6") ;

     END IF ;

     DATE_STACK.COPY (THIS_STACK    => FIRST_DATE_STACK,

                      TO_THIS_STACK => SECOND_DATE_STACK) ;

     IF FIRST_DATE_STACK /= SECOND_DATE_STACK THEN

          REPORT.FAILED (

               "PROBLEMS WITH COPY OR TEST FOR EQUALITY") ;

     END IF ;

     DATE_STACK.POP (THIS_ELEMENT   => STORE_DATE,

                     OFF_THIS_STACK => SECOND_DATE_STACK) ;

     DATE_STACK.PUSH (THIS_ELEMENT     => WALL_DATE,

                      ON_TO_THIS_STACK => SECOND_DATE_STACK) ;

     IF FIRST_DATE_STACK = SECOND_DATE_STACK THEN

          REPORT.FAILED (

               "PROBLEMS WITH POP OR TEST FOR EQUALITY") ;

     END IF ;

     UNDERFLOW_EXCEPTION_TEST:

     BEGIN  -- UNDERFLOW_EXCEPTION_TEST

          DATE_STACK.CLEAR (THIS_STACK => THIRD_DATE_STACK) ;

          DATE_STACK.POP (THIS_ELEMENT      => STORE_DATE,

                          OFF_THIS_STACK    => THIRD_DATE_STACK) ;

          REPORT.FAILED ("UNDERFLOW EXCEPTION NOT RAISED") ;

     EXCEPTION

          WHEN DATE_STACK.UNDERFLOW => NULL ;  -- CORRECT EXCEPTION

                                               -- RAISED

          WHEN OTHERS =>

               REPORT.FAILED ("INCORRECT EXCEPTION RAISED IN " &

                              "UNDERFLOW EXCEPTION TEST") ;

     END UNDERFLOW_EXCEPTION_TEST ;

     OVERFLOW_EXCEPTION_TEST:

     BEGIN  -- OVERFLOW_EXCEPTION_TEST

          DATE_STACK.CLEAR (THIS_STACK => THIRD_DATE_STACK) ;

          FOR INDEX IN 1 .. 10 LOOP

               DATE_STACK.PUSH ( THIS_ELEMENT     => TODAY,

                                 ON_TO_THIS_STACK => THIRD_DATE_STACK) ;

          END LOOP ;

          DATE_STACK.PUSH (THIS_ELEMENT     => TODAY,

                           ON_TO_THIS_STACK => THIRD_DATE_STACK) ;

          REPORT.FAILED ("OVERFLOW EXCEPTION NOT RAISED") ;

     EXCEPTION

          WHEN DATE_STACK.OVERFLOW => NULL ;  -- CORRECT EXCEPTION

                                              -- RAISED

          WHEN OTHERS =>

               REPORT.FAILED ("INCORRECT EXCEPTION RAISED IN " &

                              "OVERFLOW EXCEPTION TEST") ;

     END OVERFLOW_EXCEPTION_TEST ;

     LOCAL_BLOCK:

     DECLARE

          TYPE DATE_TABLE IS ARRAY (POSITIVE RANGE 1 .. 10) OF DATE ;

          FIRST_DATE_TABLE : DATE_TABLE ;

          TABLE_INDEX : POSITIVE := 1 ;

          PROCEDURE SHOW_DATES (THIS_DATE : IN  DATE ;

                                CONTINUE  : OUT BOOLEAN) ;

          PROCEDURE STORE_DATES (THIS_DATE : IN DATE ;

                                 CONTINUE  : OUT BOOLEAN) ;

          PROCEDURE SHOW_DATE_ITERATE IS NEW

               DATE_STACK.ITERATE (PROCESS => SHOW_DATES) ;

          PROCEDURE STORE_DATE_ITERATE IS NEW

               DATE_STACK.ITERATE (PROCESS => STORE_DATES) ;

          PROCEDURE SHOW_DATES (THIS_DATE : IN  DATE ;

                                CONTINUE  : OUT BOOLEAN) IS

          BEGIN  -- SHOW_DATES

                REPORT.COMMENT ("THE MONTH IS " &

                           MONTH_TYPE'IMAGE (THIS_DATE.MONTH)) ;

                REPORT.COMMENT ("THE DAY IS " &

                           DAY_TYPE'IMAGE (THIS_DATE.DAY)) ;

                REPORT.COMMENT ("THE YEAR IS " &

                           YEAR_TYPE'IMAGE (THIS_DATE.YEAR)) ;

                CONTINUE := TRUE ;

          END SHOW_DATES ;

          PROCEDURE STORE_DATES (THIS_DATE : IN  DATE ;

                                       CONTINUE  : OUT BOOLEAN) IS

          BEGIN  -- STORE_DATES

                FIRST_DATE_TABLE (TABLE_INDEX) := THIS_DATE ;

                TABLE_INDEX := TABLE_INDEX + 1 ;

                CONTINUE := TRUE ;

          END STORE_DATES ;

     BEGIN  -- LOCAL_BLOCK

          REPORT.COMMENT ("CONTENTS OF THE FIRST STACK") ;

          SHOW_DATE_ITERATE (OVER_THIS_STACK => FIRST_DATE_STACK) ;

          REPORT.COMMENT ("CONTENTS OF THE SECOND STACK") ;

          SHOW_DATE_ITERATE (OVER_THIS_STACK => SECOND_DATE_STACK) ;

          STORE_DATE_ITERATE (OVER_THIS_STACK => FIRST_DATE_STACK) ;

          IF (FIRST_DATE_TABLE (1) /= TODAY) OR

               (FIRST_DATE_TABLE (2) /= FIRST_DATE) THEN

                     REPORT.FAILED ("PROBLEMS WITH ITERATION - 1") ;

          END IF ;

          TABLE_INDEX := 1 ;

          STORE_DATE_ITERATE (OVER_THIS_STACK => SECOND_DATE_STACK) ;

          IF (FIRST_DATE_TABLE (1) /= TODAY) OR

               (FIRST_DATE_TABLE (2) /= WALL_DATE) THEN

                     REPORT.FAILED ("PROBLEMS WITH ITERATION - 2") ;

          END IF ;

     END LOCAL_BLOCK ;

     REPORT.RESULT ;

END CC3019B2M ;