compositevisitor.java

大名鼎鼎的java动态脚本语言。已经通过了sun的认证

/**
 *
 * Copyright 2005 Jeremy Rayner
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 **/
package org.codehaus.groovy.antlr.treewalker;

import java.util.*;

import org.codehaus.groovy.antlr.GroovySourceAST;

/**
 * A composite of many visitors. Any call to a method from Visitor
 * will invoke each visitor in turn, and reverse the invocation
 * order on a closing visit.
 * i.e.
 * with the list of visitors = [a,b,c]
 * composite.visitDefault() would...
 * call on the opening visit - a.visitDefault() then b.visitDefault() then c.visitDefault()
 * call on the closing visit - c.visitDefault() then b.visitDefault() then a.visitDefault()
 *
 * @author <a href="mailto:[e-mail]">Jeremy Rayner</a>
 * @version $Revision: 1.2 $
 */

public class CompositeVisitor implements Visitor{
    List visitors;
    List backToFrontVisitors;
    private Stack stack;

    /**
     * A composite of the supplied list of antlr AST visitors.
     * @param visitors a List of implementations of the Visitor interface
     */
    public CompositeVisitor(List visitors) {
        this.visitors = visitors;
        this.stack = new Stack();
        backToFrontVisitors = new ArrayList();
        backToFrontVisitors.addAll(visitors);
        Collections.reverse(backToFrontVisitors);
    }

    private Iterator itr(int visit) {
        Iterator itr=visitors.iterator();
        if (visit == CLOSING_VISIT) {
            itr = backToFrontVisitors.iterator();
        }
        return itr;
    }

    public void setUp() {
        Iterator itr = visitors.iterator();
        while (itr.hasNext()) {((Visitor)itr.next()).setUp();}
    }

    public void visitAbstract(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAbstract(t,visit);}
    }

    public void visitAnnotation(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAnnotation(t,visit);}
    }

    public void visitAnnotations(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAnnotations(t,visit);}
    }

    public void visitAnnotationArrayInit(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAnnotationArrayInit(t,visit);}
    }

    public void visitAnnotationDef(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAnnotationDef(t,visit);}
    }

    public void visitAnnotationFieldDef(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAnnotationFieldDef(t,visit);}
    }

    public void visitAnnotationMemberValuePair(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAnnotationMemberValuePair(t,visit);}
    }

    public void visitArrayDeclarator(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitArrayDeclarator(t,visit);}
    }

    public void visitAssign(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAssign(t,visit);}
    }

    public void visitAt(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitAt(t,visit);}
    }

    public void visitBand(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBand(t,visit);}
    }

    public void visitBandAssign(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBandAssign(t,visit);}
    }

    public void visitBigSuffix(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBigSuffix(t,visit);}
    }

    public void visitBlock(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBlock(t,visit);}
    }

    public void visitBnot(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBnot(t,visit);}
    }

    public void visitBor(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBor(t,visit);}
    }

    public void visitBorAssign(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBorAssign(t,visit);}
    }

    public void visitBsr(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBsr(t,visit);}
    }

    public void visitBsrAssign(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBsrAssign(t,visit);}
    }

    public void visitBxor(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBxor(t,visit);}
    }

    public void visitBxorAssign(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitBxorAssign(t,visit);}
    }

    public void visitCaseGroup(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitCaseGroup(t,visit);}
    }

    public void visitClassDef(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitClassDef(t,visit);}
    }

    public void visitClosedBlock(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitClosedBlock(t,visit);}
    }

    public void visitClosureOp(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitClosureOp(t,visit);}
    }

    public void visitColon(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitColon(t,visit);}
    }

    public void visitComma(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitComma(t,visit);}
    }

    public void visitCompareTo(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitCompareTo(t,visit);}
    }

    public void visitCtorCall(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitCtorCall(t,visit);}
    }

    public void visitCtorIdent(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitCtorIdent(t,visit);}
    }

    public void visitDec(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDec(t,visit);}
    }

    public void visitDigit(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDigit(t,visit);}
    }

    public void visitDiv(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDiv(t,visit);}
    }

    public void visitDivAssign(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDivAssign(t,visit);}
    }

    public void visitDollar(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDollar(t,visit);}
    }

    public void visitDot(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDot(t,visit);}
    }

    public void visitDynamicMember(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitDynamicMember(t,visit);}
    }

    public void visitElist(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitElist(t,visit);}
    }

    public void visitEmptyStat(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitEmptyStat(t,visit);}
    }

    public void visitEnumConstantDef(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitEnumConstantDef(t,visit);}
    }

    public void visitEnumDef(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitEnumDef(t,visit);}
    }

    public void visitEof(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitEof(t,visit);}
    }

    public void visitEqual(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitEqual(t,visit);}
    }

    public void visitEsc(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitEsc(t,visit);}
    }

    public void visitExponent(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitExponent(t,visit);}
    }

    public void visitExpr(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitExpr(t,visit);}
    }

    public void visitExtendsClause(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitExtendsClause(t,visit);}
    }

    public void visitFinal(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitFinal(t,visit);}
    }

    public void visitFloatSuffix(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitFloatSuffix(t,visit);}
    }

    public void visitForCondition(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitForCondition(t,visit);}
    }

    public void visitForEachClause(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitForEachClause(t,visit);}
    }

    public void visitForInit(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitForInit(t,visit);}
    }

    public void visitForInIterable(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitForInIterable(t,visit);}
    }

    public void visitForIterator(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitForIterator(t,visit);}
    }

    public void visitGe(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitGe(t,visit);}
    }

    public void visitGt(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitGt(t,visit);}
    }

    public void visitHexDigit(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitHexDigit(t,visit);}
    }

    public void visitIdent(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitIdent(t,visit);}
    }

    public void visitImplementsClause(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitImplementsClause(t,visit);}
    }

    public void visitImplicitParameters(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitImplicitParameters(t,visit);}
    }

    public void visitImport(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitImport(t,visit);}
    }

    public void visitInc(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitInc(t,visit);}
    }

    public void visitIndexOp(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitIndexOp(t,visit);}
    }

    public void visitInstanceInit(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitInstanceInit(t,visit);}
    }

    public void visitInterfaceDef(GroovySourceAST t, int visit) {
        Iterator itr = itr(visit);
        while (itr.hasNext()) {((Visitor)itr.next()).visitInterfaceDef(t,visit);}
    }

    public void visitLabeledArg(GroovySourceAST t, int visit) {