defaulterrorreporter.java

来自「主要的怎么样结合java 和 javascript!」· Java 代码 · 共 100 行

/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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 Netscape are
 * Copyright (C) 1997-1999 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 * Norris Boyd
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU Public License (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 NPL, indicate your decision by
 * deleting the provisions above and replace 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 NPL or the GPL.
 */

package org.mozilla.javascript;

/**
 * This is the default error reporter for JavaScript.
 *
 * @author Norris Boyd
 */
class DefaultErrorReporter implements ErrorReporter
{
    static final DefaultErrorReporter instance = new DefaultErrorReporter();

    private boolean forEval;
    private ErrorReporter chainedReporter;

    private DefaultErrorReporter() { }

    static ErrorReporter forEval(ErrorReporter reporter)
    {
        DefaultErrorReporter r = new DefaultErrorReporter();
        r.forEval = true;
        r.chainedReporter = reporter;
        return r;
    }

    public void warning(String message, String sourceURI, int line,
                        String lineText, int lineOffset)
    {
        if (chainedReporter != null) {
            chainedReporter.warning(
                message, sourceURI, line, lineText, lineOffset);
        } else {
            // Do nothing
        }
    }

    public void error(String message, String sourceURI, int line,
                      String lineText, int lineOffset)
    {
        if (forEval) {
            throw ScriptRuntime.constructError(
                "SyntaxError", message, sourceURI, line, lineText, lineOffset);
        }
        if (chainedReporter != null) {
            chainedReporter.error(
                message, sourceURI, line, lineText, lineOffset);
        } else {
            throw runtimeError(
                message, sourceURI, line, lineText, lineOffset);
        }
    }

    public EvaluatorException runtimeError(String message, String sourceURI,
                                           int line, String lineText,
                                           int lineOffset)
    {
        if (chainedReporter != null) {
            return chainedReporter.runtimeError(
                message, sourceURI, line, lineText, lineOffset);
        } else {
            return new EvaluatorException(
                message, sourceURI, line, lineText, lineOffset);
        }
    }
}