001 /** 002 * 003 * Copyright 2005 Jeremy Rayner 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 **/ 018 019 package org.codehaus.groovy.antlr; 020 021 import antlr.collections.AST; 022 023 /** 024 * An interface for processing antlr AST objects 025 * 026 * @author <a href="mailto:groovy@ross-rayner.com">Jeremy Rayner</a> 027 * @version $Revision: 2387 $ 028 */ 029 public interface AntlrASTProcessor { 030 /** 031 * performs some processing on the supplied AST node. 032 * @param t the AST node to process. 033 * @return possibly returns the AST modified or null, depends on the implementation. 034 */ 035 AST process(AST t); 036 }