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Groovy: A powerful multi-faceted language for the JVM

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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 groovy.lang;

import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.ast.ModuleNode;

/**
 * An exception thrown by the interpreter
 */
public class GroovyRuntimeException extends RuntimeException {

    private static final long serialVersionUID = -193137033604506378L;
    private ModuleNode module;
    private ASTNode node;

    public GroovyRuntimeException() {
    }

    public GroovyRuntimeException(String message) {
        super(message);
    }

    public GroovyRuntimeException(String message, ASTNode node) {
        super(message);
        this.node = node;
    }

    public GroovyRuntimeException(String message, Throwable cause) {
        super(message, cause);
    }

    public GroovyRuntimeException(Throwable t) {
        super();
        initCause(t);
    }

    public void setModule(ModuleNode module) {
        this.module = module;
    }

    public ModuleNode getModule() {
        return module;
    }

    @Override
    public String getMessage() {
        String messageWithoutLocationText = getMessageWithoutLocationText();
        String locationText = getLocationText();
        if (messageWithoutLocationText == null && locationText.isEmpty()) {
            return null; // not "null"
        }
        return messageWithoutLocationText + locationText;
    }

    public ASTNode getNode() {
        return node;
    }

    public String getMessageWithoutLocationText() {
        return super.getMessage();
    }

    protected String getLocationText() {
        String answer = ". ";
        if (node != null) {
            answer += "At [" + node.getLineNumber() + ":" + node.getColumnNumber() + "] ";
        }
        if (module != null) {
            answer += module.getDescription();
        }
        if (answer.equals(". ")) {
            return "";
        }
        return answer;
    }
}