astassociationend.java

UML设计测试工具

/*
 * 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.parser.use;

import org.tzi.use.parser.AST;
import org.tzi.use.parser.Context;
import org.tzi.use.parser.MyToken;
import org.tzi.use.parser.SemanticException;
import org.tzi.use.uml.mm.MAssociationEnd;
import org.tzi.use.uml.mm.MClass;
import org.tzi.use.uml.mm.MMultiplicity;

/**
 * Node of the abstract syntax tree constructed by the parser.
 *
 * @version     $ProjectVersion: 2-3-0-release.1 $
 * @author  Mark Richters
 */
public class ASTAssociationEnd extends AST {
    private MyToken fName;
    private ASTMultiplicity fMultiplicity;
    private MyToken fRolename;  // optional: may be null!
    private boolean fOrdered;

    public ASTAssociationEnd(MyToken name, ASTMultiplicity mult) {
        fName = name;
        fMultiplicity = mult;
        fOrdered = false;
    }

    public void setRolename(MyToken rolename) {
        fRolename = rolename;
    }

    public void setOrdered() {
        fOrdered = true;
    }

    public MAssociationEnd gen(Context ctx, int kind) throws SemanticException {
        // lookup class at association end in current model
        MClass cls = ctx.model().getClass(fName.getText());
        if (cls == null )
            // this also renders the rest of the association useless
            throw new SemanticException(fName, "Class `" + fName.getText() +
                                        "' does not exist in this model.");
    
        MMultiplicity mult = fMultiplicity.gen(ctx);
        if (fOrdered && ! mult.isCollection() ) {
            ctx.reportWarning(fName, "Specifying `ordered' for " +
                              "an association end targeting single objects has no effect.");
            fOrdered = false;
        }

        MAssociationEnd aend = ctx.modelFactory().createAssociationEnd(cls, 
            ( fRolename != null ) ? fRolename.getText() : cls.nameAsRolename(),
            mult, kind, fOrdered);

        return aend;
    }

    public String toString() {
        return "FIXME";
    }
}