/*
 *  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.syntax;

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

/** Base exception indicating a syntax error.
 *
 *  @author <a href="bob@werken.com">bob mcwhirter</a>
 */
public class SyntaxException extends GroovyException {

    /** Line upon which the error occurred. */
    private final int startLine;
    private final int endLine;

    /** Column upon which the error occurred. */
    private final int startColumn;
    private final int endColumn;

    private String sourceLocator;

    public SyntaxException(String message, ASTNode node) {
        this(message, node.getLineNumber(), node.getColumnNumber(), node.getLastLineNumber(), node.getLastColumnNumber());
    }

    public SyntaxException(String message, int startLine, int startColumn) {
        this(message, startLine, startColumn, startLine, startColumn+1);
    }

    public SyntaxException(String message, int startLine, int startColumn, int endLine, int endColumn) {
        super(message, false);
        this.startLine = startLine;
        this.startColumn = startColumn;
        this.endLine = endLine;
        this.endColumn = endColumn;
    }

    public SyntaxException(String message, Throwable cause, int startLine, int startColumn) {
        this(message, cause, startLine, startColumn, startLine, startColumn+1);
    }

    public SyntaxException(String message, Throwable cause, int startLine, int startColumn, int endLine, int endColumn) {
        super(message, cause);
        this.startLine = startLine;
        this.startColumn = startColumn;
        this.endLine = endLine;
        this.endColumn = endColumn;
    }

    // Properties
    // ----------------------------------------------------------------------
    public void setSourceLocator(String sourceLocator) {
        this.sourceLocator = sourceLocator;
    }

    public String getSourceLocator() {
        return this.sourceLocator;
    }

    /** Retrieve the line upon which the error occurred.
     *
     *  @return The line.
     */
    public int getLine() {
        return getStartLine();
    }

    /**
     * @return the line on which the error occurs
     */
    public int getStartLine() {
        return startLine;
    }

    /**
     * Retrieve the column upon which the error occurred.
     *
     *  @return The column.
     */
    public int getStartColumn() {
        return startColumn;
    }

    /**
     * @return the end line on which the error occurs
     */
    public int getEndLine() {
        return endLine;
    }

    /**
     * @return the end column on which the error occurs
     */
    public int getEndColumn() {
        return endColumn;
    }

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

    public String getMessage() {
        return super.getMessage() + " @ line " + startLine + ", column " + startColumn + ".";
    }
}