org.mozilla.javascript.DefaultErrorReporter Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of rhino Show documentation
The Rhino JavaScript Engine for Java
The newest version!
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

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) {
            // Assume error message strings that start with "TypeError: "
            // should become TypeError exceptions. A bit of a hack, but we
            // don't want to change the ErrorReporter interface.
            String error = "SyntaxError";
            final String TYPE_ERROR_NAME = "TypeError";
            final String DELIMETER = ": ";
            final String prefix = TYPE_ERROR_NAME + DELIMETER;
            if (message.startsWith(prefix)) {
                error = TYPE_ERROR_NAME;
                message = message.substring(prefix.length());
            }
            throw ScriptRuntime.constructError(error, 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);
        }
    }
}