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/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.ast;

import java.util.Map;

/**
 * Base class for any AST node. This class supports basic information used in all nodes of the AST:
 * 
    *
  • line and column number information. Usually a node represents a certain * area in a text file determined by a starting position and an ending position. * For nodes that do not represent this, this information will be -1. A node can * also be configured in its line/col information using another node through * setSourcePosition(otherNode).
  • *
  • every node can store meta data. A phase operation or transform can use * this to transport arbitrary information to another phase operation or * transform. The only requirement is that the other phase operation or transform * runs after the part storing the information. If the information transport is * done it is strongly recommended to remove that meta data.
  • *
  • a text representation of this node trough getText(). This was in the * past used for assertion messages. Since the usage of power asserts this * method will not be called for this purpose anymore and might be removed in * future versions of Groovy
  • *
*/ public class ASTNode implements NodeMetaDataHandler { private int lineNumber = -1; private int columnNumber = -1; private int lastLineNumber = -1; private int lastColumnNumber = -1; private Map metaDataMap; public void visit(GroovyCodeVisitor visitor) { throw new RuntimeException("No visit() method implemented for class: " + getClass().getName()); } public String getText() { return ""; } public int getLineNumber() { return lineNumber; } public void setLineNumber(int lineNumber) { this.lineNumber = lineNumber; } public int getColumnNumber() { return columnNumber; } public void setColumnNumber(int columnNumber) { this.columnNumber = columnNumber; } public int getLastLineNumber() { return lastLineNumber; } public void setLastLineNumber(int lastLineNumber) { this.lastLineNumber = lastLineNumber; } public int getLastColumnNumber() { return lastColumnNumber; } public void setLastColumnNumber(int lastColumnNumber) { this.lastColumnNumber = lastColumnNumber; } /** * Sets the source position using another ASTNode. * The sourcePosition consists of a line/column pair for * the start and a line/column pair for the end of the * expression or statement * * @param node - the node used to configure the position information */ public void setSourcePosition(ASTNode node) { this.lineNumber = node.getLineNumber(); this.columnNumber = node.getColumnNumber(); this.lastLineNumber = node.getLastLineNumber(); this.lastColumnNumber = node.getLastColumnNumber(); } /** * Copies all node meta data from the other node to this one * @param other - the other node */ public void copyNodeMetaData(ASTNode other) { copyNodeMetaData((NodeMetaDataHandler) other); } @Override public Map getMetaDataMap() { return metaDataMap; } @Override public void setMetaDataMap(Map metaDataMap) { this.metaDataMap = metaDataMap; } }




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