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A version of the Rhino Javascript engine pulled diretly from the Mozialla repos.
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Rhino code, released
 * May 6, 1999.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1997-1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Steve Yegge
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License Version 2 or later (the "GPL"), in which
 * case the provisions of the GPL are applicable instead of those above. If
 * you wish to allow use of your version of this file only under the terms of
 * the GPL and not to allow others to use your version of this file under the
 * MPL, indicate your decision by deleting the provisions above and replacing
 * them with the notice and other provisions required by the GPL. If you do
 * not delete the provisions above, a recipient may use your version of this
 * file under either the MPL or the GPL.
 *
 * ***** END LICENSE BLOCK ***** */

package org.mozilla.javascript.ast;

/**
 * Encapsulates information for a JavaScript parse error or warning.
 */
public class ParseProblem {

    public static enum Type {Error, Warning}

    private Type type;
    private String message;
    private String sourceName;
    private int offset;
    private int length;

    /**
     * Constructs a new ParseProblem.
     */
    public ParseProblem(ParseProblem.Type type, String message,
                        String sourceName, int offset, int length) {
        setType(type);
        setMessage(message);
        setSourceName(sourceName);
        setFileOffset(offset);
        setLength(length);
    }

    public ParseProblem.Type getType() {
        return type;
    }

    public void setType(ParseProblem.Type type) {
        this.type = type;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String msg) {
        this.message = msg;
    }

    public String getSourceName() {
        return sourceName;
    }

    public void setSourceName(String name) {
        this.sourceName = name;
    }

    public int getFileOffset() {
        return offset;
    }

    public void setFileOffset(int offset) {
        this.offset = offset;
    }

    public int getLength() {
        return length;
    }

    public void setLength(int length) {
        this.length = length;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(200);
        sb.append(sourceName).append(":");
        sb.append("offset=").append(offset).append(",");
        sb.append("length=").append(length).append(",");
        sb.append(type == Type.Error ? "error: " : "warning: ");
        sb.append(message);
        return sb.toString();
    }
}