-- B45207D.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 EQUALITY AND INEQUALITY ARE NOT PREDEFINED FOR LIMITED -- TYPES. -- PART 1: LIMITED TYPES NOT INVOLVING TASKING OR TYPE DERIVATION. -- CASES COVERED: ( ">>" MARKS CASES COVERED IN THIS FILE.) -- * LIMITED PRIVATE TYPE -- * ARRAY WHOSE COMPONENTS ARE OF A LIMITED PRIVATE TYPE -- * RECORD WITH A COMPONENT WHICH IS OF A LIMITED PRIVATE TYPE -- * ARRAY OF LIMITED-TYPE RECORDS (AS ABOVE) -- * RECORDS OF LIMITED-TYPE ARRAYS (AS ABOVE) -->> * ARRAY WHOSE COMPONENTS ARE OF AN EQUALITY-ENDOWED -- LIMITED PRIVATE TYPE -->> * RECORD ALL OF WHOSE COMPONENTS ARE OF AN EQUALITY-ENDOWED -- LIMITED PRIVATE TYPE -- RM 2/12/82 -- RM 2/22/82 PROCEDURE B45207D IS BEGIN ------------------------------------------------------------------- ------- ARRAY OF EQUALITY-ENDOWED LIMITED-TYPE COMPONENTS ------- DECLARE B : BOOLEAN := TRUE ; TYPE ENUM IS ( AA , BB , CC ); PACKAGE P IS TYPE LP IS LIMITED PRIVATE; FUNCTION "=" ( U,V:LP ) RETURN BOOLEAN ; PRIVATE TYPE LP IS NEW ENUM ; END P ; USE P ; TYPE ARR IS ARRAY ( 1..3 ) OF LP ; X , Y : ARR ; PACKAGE BODY P IS FUNCTION "=" ( U,V:LP ) RETURN BOOLEAN IS BEGIN RETURN ( ENUM(U) = ENUM(V) ); END "=" ; BEGIN X(1) := AA ; X(2) := AA ; X(3) := AA ; Y(1) := AA ; Y(2) := AA ; Y(3) := AA ; IF X = Y -- ERROR: EQUALITY NOT AVAILABLE THEN NULL ; END IF; END P ; BEGIN IF X = Y -- ERROR: EQUALITY STILL NOT AVAILABLE THEN NULL ; END IF; B := ( X /= Y ) ; -- ERROR: EQUALITY STILL NOT AVAILABLE END ; ------------------------------------------------------------------- ------- RECORD OF EQUALITY-ENDOWED LIMITED-TYPE COMPONENTS ------ DECLARE B : BOOLEAN := TRUE ; TYPE ENUM IS ( AA , BB , CC ); PACKAGE P IS TYPE LP IS LIMITED PRIVATE; FUNCTION "=" ( U,V:LP ) RETURN BOOLEAN ; PRIVATE TYPE LP IS NEW ENUM ; END P ; USE P ; TYPE REC IS RECORD COMPONENT1 : LP ; COMPONENT2 : LP ; END RECORD; X , Y : REC ; PACKAGE BODY P IS FUNCTION "=" ( U,V:LP ) RETURN BOOLEAN IS BEGIN RETURN ( ENUM(U) = ENUM(V) ); END "=" ; BEGIN X.COMPONENT1 := AA ; X.COMPONENT2 := AA ; Y.COMPONENT1 := AA ; Y.COMPONENT2 := AA ; IF X = Y -- ERROR: EQUALITY NOT AVAILABLE THEN NULL ; END IF; END P ; BEGIN IF X = Y -- ERROR: EQUALITY STILL NOT AVAILABLE THEN NULL ; END IF; B := ( X /= Y ) ; -- ERROR: EQUALITY STILL NOT AVAILABLE END ; ------------------------------------------------------------------- END B45207D ;