| /** |
| * |
| * 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.io.PrintStream; |
| |
| import org.codehaus.groovy.antlr.GroovySourceAST; |
| |
| /** |
| * A simple antlr AST visitor that outputs the tokenName of each node in a pseudo xml style. |
| * |
| * @author <a href="mailto:groovy@ross-rayner.com">Jeremy Rayner</a> |
| * @version $Revision$ |
| */ |
| |
| public class NodePrinter extends VisitorAdapter { |
| private String[] tokenNames; |
| private PrintStream out; |
| |
| /** |
| * A visitor that prints a pseudo xml output to the supplied PrintStream |
| * @param out supplied PrintStream to output nodes to |
| * @param tokenNames an array of token names to use |
| */ |
| public NodePrinter(PrintStream out,String[] tokenNames) { |
| this.tokenNames = tokenNames; |
| this.out = out; |
| } |
| |
| public void visitDefault(GroovySourceAST t,int visit) { |
| if (visit == OPENING_VISIT) { |
| out.print("<"+ tokenNames[t.getType()] + ">"); |
| } else { |
| out.print("</" + tokenNames[t.getType()] + ">"); |
| } |
| } |
| } |