/* * USE - UML based specification environment * Copyright (C) 1999-2004 Mark Richters, University of Bremen * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *//* $ProjectHeader: use 2-3-0-release.1 Mon, 12 Sep 2005 20:18:33 +0200 green $ */package org.tzi.use.uml.ocl.expr;import org.tzi.use.uml.ocl.type.TypeFactory;import org.tzi.use.uml.ocl.value.Value;/**  * OCL forAll expression. * * @version     $ProjectVersion: 2-3-0-release.1 $ * @author  Mark Richters */public class ExpForAll extends ExpQuery {    /**     * Constructs a forAll expression.     */    public ExpForAll(VarDeclList elemVarDecls,                     Expression rangeExp,                      Expression queryExp)         throws ExpInvalidException    {        // result is of boolean type        super(TypeFactory.mkBoolean(), elemVarDecls, rangeExp, queryExp);            // queryExp must be a boolean expression        assertBooleanQuery();    }    /**     * Constructs a forAll expression with one element variable.     */    public ExpForAll(VarDecl elemVarDecl,                     Expression rangeExp,                      Expression queryExp)         throws ExpInvalidException    {        this(new VarDeclList(elemVarDecl), rangeExp, queryExp);    }    /**      * Return name of query expression.     */    public String name() {        return "forAll";    }    /**     * Evaluates expression and returns result value.     */    public Value eval(EvalContext ctx) {        ctx.enter(this);        Value res = evalExistsOrForAll(ctx, false);        ctx.exit(this, res);        return res;    }}