?? expforall.java
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/* * 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; }}
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