WITH REPORT; USE REPORT;
PROCEDURE C67005C IS
GENERIC
TYPE T IS LIMITED PRIVATE;
WITH FUNCTION EQUAL (LEFT, RIGHT : T) RETURN BOOLEAN IS <>;
PACKAGE EQUALITY IS
FUNCTION "=" (LEFT, RIGHT : T) RETURN BOOLEAN;
END EQUALITY;
PACKAGE BODY EQUALITY IS
FUNCTION "=" (LEFT, RIGHT : T) RETURN BOOLEAN IS
BEGIN
RETURN EQUAL (LEFT, RIGHT);
END "=";
END EQUALITY;
PACKAGE STARTER IS
TYPE INT IS PRIVATE;
FUNCTION VALUE_OF (I : INTEGER) RETURN INT;
FUNCTION EQUAL (LEFT, RIGHT : INT) RETURN BOOLEAN;
PRIVATE
TYPE INT IS ACCESS INTEGER;
END STARTER;
PACKAGE BODY STARTER IS
FUNCTION VALUE_OF (I : INTEGER) RETURN INT IS
BEGIN
RETURN NEW INTEGER'(I);
END VALUE_OF;
FUNCTION EQUAL (LEFT, RIGHT : INT) RETURN BOOLEAN IS
BEGIN
RETURN LEFT.ALL = RIGHT.ALL;
END EQUAL;
END STARTER;
PACKAGE ABSTRACTION IS
TYPE INT IS NEW STARTER.INT;
PACKAGE INT_EQUALITY IS NEW EQUALITY (INT, EQUAL);
FUNCTION "=" (LEFT, RIGHT : INT) RETURN BOOLEAN
RENAMES INT_EQUALITY."=";
END ABSTRACTION;
USE ABSTRACTION;
BEGIN
TEST ("C67005C", "RENAMING OF EQUALITY OPERATOR WITH " &
"NON-LIMITED PARAMETERS");
DECLARE
I : INT := VALUE_OF(1);
J : INT := VALUE_OF(0);
PROCEDURE CHECK (B : BOOLEAN) IS
BEGIN
IF I = J AND B THEN
COMMENT ("I = J");
ELSIF I /= J AND NOT B THEN
COMMENT ("I /= J");
ELSE
FAILED ("WRONG ""="" OPERATOR");
END IF;
END CHECK;
BEGIN
CHECK(FALSE);
I := VALUE_OF(0);
CHECK(TRUE);
RESULT;
END;
END C67005C;