astassociationclass.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.
 */

package org.tzi.use.parser.use;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.tzi.use.parser.Context;
import org.tzi.use.parser.MyToken;
import org.tzi.use.parser.SemanticException;
import org.tzi.use.parser.Symtable;
import org.tzi.use.uml.mm.MAggregationKind;
import org.tzi.use.uml.mm.MAssociationClass;
import org.tzi.use.uml.mm.MAssociationEnd;
import org.tzi.use.uml.mm.MAttribute;
import org.tzi.use.uml.mm.MClass;
import org.tzi.use.uml.mm.MGeneralization;
import org.tzi.use.uml.mm.MInvalidModelException;
import org.tzi.use.uml.mm.MOperation;
import org.tzi.use.uml.ocl.type.ObjectType;
import org.tzi.use.uml.ocl.type.TypeFactory;


/**
 * @version     $ProjectVersion: 2-3-0-release.1 $
 * @author <a href="mailto:[e-mail]>Hanna Bauerdick</a>
 * @author <a href="mailto:[e-mail]>Fabian Gutsche</a>
 */
public class ASTAssociationClass extends ASTClass {

    private MyToken fKind = null;
    private MAssociationClass fAssocClass;  
    private List fAssociationEnds;

    public ASTAssociationClass( MyToken name, boolean isAbstract ) {
        super( name, isAbstract );
        fAssociationEnds = new ArrayList();
    }

    public void addEnd( ASTAssociationEnd ae ) {
        fAssociationEnds.add( ae );
    }

    public void setKind( MyToken kind ) {
        fKind = kind;
    }

    public MAssociationClass genEmptyAssocClass( Context ctx )
            throws SemanticException {
        fAssocClass = ctx.modelFactory()
            .createAssociationClass( fName.getText(), fIsAbstract );
        // sets the line position of the USE-Model in this association class
        fAssocClass.setPositionInModel( fName.getLine() );
        // makes sure we have a unique class name
        ctx.typeTable().add( fName, TypeFactory.mkObjectType( fAssocClass ) );
        return fAssocClass;
    }

    public void genAttributesOperationSignaturesAndGenSpec( Context ctx ) {
        ctx.setCurrentClass( fAssocClass );
        if ( fSuperClasses != null ) {
            Iterator it = fSuperClasses.iterator();
            while ( it.hasNext() ) {
                MyToken id = ( MyToken ) it.next();

                // lookup parent by name
                MClass parent = ctx.model().getClass( id.getText() );
                if ( parent == null )
                    ctx.reportError( id, "Undefined class `" + id.getText() + "'." );
                else {
                    try {
                        MGeneralization gen =
                            ctx.modelFactory()
                            .createGeneralization( fAssocClass, parent );
                        ctx.model().addGeneralization( gen );
                    } catch ( MInvalidModelException ex ) {
                        ctx.reportError( fName, ex );
                    }
                }
            }
        }
        
        // add attributes
        Iterator it = fAttributes.iterator();
        while ( it.hasNext() ) {
            ASTAttribute a = ( ASTAttribute ) it.next();
            try {
                MAttribute attr = a.gen( ctx );
                fAssocClass.addAttribute( attr );
            } catch ( SemanticException ex ) {
                ctx.reportError( ex );
            } catch ( MInvalidModelException ex ) {
                ctx.reportError( fName, ex );
            }
        }

        // add operation signatures, expressions have to be generated
        // later when all class interfaces are known
        it = fOperations.iterator();
        while ( it.hasNext() ) {
            ASTOperation astOp = ( ASTOperation ) it.next();
            try {
                MOperation op = astOp.genSignature( ctx );
                fAssocClass.addOperation( op );
            } catch ( SemanticException ex ) {
                ctx.reportError( ex );
            } catch ( MInvalidModelException ex ) {
                ctx.reportError( fName, ex );
            }
        }

        ctx.setCurrentClass( null );
    }

    public MAssociationClass genAssociation( Context ctx )
            throws SemanticException {

        int kind = MAggregationKind.NONE;
        if ( fKind != null ) {
            String kindname = fKind.getText();
            
            if ( kindname.equals( "aggregation" ) )
                kind = MAggregationKind.AGGREGATION;
            else if ( kindname.equals( "composition" ) )
                kind = MAggregationKind.COMPOSITION;
        }

        Iterator it = fAssociationEnds.iterator();
        try {
            while ( it.hasNext() ) {
                ASTAssociationEnd ae = ( ASTAssociationEnd ) it.next();

                // kind of association determines kind of first
                // association end
                MAssociationEnd aend = ae.gen( ctx, kind );
                fAssocClass.addAssociationEnd( aend );

                // further ends are plain ends
                kind = MAggregationKind.NONE;
            }
        } catch ( MInvalidModelException ex ) {
            throw new SemanticException( fName,
                                         "In " 
                                         + MAggregationKind.name( fAssocClass.aggregationKind() )
                                         + " `" +
                                         fAssocClass.name() + "': " +
                                         ex.getMessage() );
        }
        return fAssocClass;
    }

    public void genConstraintsAndOperationBodies( Context ctx ) {
        ctx.setCurrentClass( fAssocClass );

        // enter pseudo-variable "self" into scope of expressions
        ObjectType ot = TypeFactory.mkObjectType( fAssocClass );
        ctx.exprContext().push( "self", ot );
        Symtable vars = ctx.varTable();
        vars.enterScope();
        try {
            vars.add( "self", ot, null );
        } catch ( SemanticException ex ) {
            // fatal error?
            throw new Error(ex);
        }


        // generate operation bodies
        Iterator it = fOperations.iterator();
        while ( it.hasNext() ) {
            ASTOperation astOp = ( ASTOperation ) it.next();
            try {
                astOp.genFinal( ctx );
            } catch ( SemanticException ex ) {
                ctx.reportError( ex );
            }
        }

        // add class invariants
        it = fInvariantClauses.iterator();
        while ( it.hasNext() ) {
            ASTInvariantClause astInv = ( ASTInvariantClause ) it.next();
            astInv.gen( ctx, null, fAssocClass );
        }

        vars.exitScope();
        ctx.exprContext().pop();
        ctx.setCurrentClass( null );
    }
}