309 lines
9.7 KiB
Java
309 lines
9.7 KiB
Java
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Rhino code, released
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* May 6, 1999.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1997-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Norris Boyd
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* Igor Bukanov
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*
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* Alternatively, the contents of this file may be used under the terms of
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* the GNU General Public License Version 2 or later (the "GPL"), in which
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* case the provisions of the GPL are applicable instead of those above. If
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* you wish to allow use of your version of this file only under the terms of
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* the GPL and not to allow others to use your version of this file under the
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* MPL, indicate your decision by deleting the provisions above and replacing
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* them with the notice and other provisions required by the GPL. If you do
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* not delete the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.javascript;
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import java.io.CharArrayWriter;
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import java.io.File;
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import java.io.FilenameFilter;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.util.List;
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/**
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* The class of exceptions thrown by the JavaScript engine.
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*/
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public abstract class RhinoException extends RuntimeException
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{
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RhinoException()
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{
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Evaluator e = Context.createInterpreter();
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if (e != null)
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e.captureStackInfo(this);
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}
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RhinoException(String details)
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{
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super(details);
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Evaluator e = Context.createInterpreter();
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if (e != null)
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e.captureStackInfo(this);
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}
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@Override
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public final String getMessage()
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{
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String details = details();
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if (sourceName == null || lineNumber <= 0) {
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return details;
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}
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StringBuffer buf = new StringBuffer(details);
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buf.append(" (");
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if (sourceName != null) {
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buf.append(sourceName);
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}
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if (lineNumber > 0) {
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buf.append('#');
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buf.append(lineNumber);
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}
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buf.append(')');
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return buf.toString();
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}
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public String details()
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{
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return super.getMessage();
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}
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/**
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* Get the uri of the script source containing the error, or null
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* if that information is not available.
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*/
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public final String sourceName()
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{
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return sourceName;
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}
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/**
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* Initialize the uri of the script source containing the error.
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*
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* @param sourceName the uri of the script source responsible for the error.
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* It should not be <tt>null</tt>.
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*
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* @throws IllegalStateException if the method is called more then once.
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*/
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public final void initSourceName(String sourceName)
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{
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if (sourceName == null) throw new IllegalArgumentException();
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if (this.sourceName != null) throw new IllegalStateException();
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this.sourceName = sourceName;
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}
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/**
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* Returns the line number of the statement causing the error,
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* or zero if not available.
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*/
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public final int lineNumber()
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{
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return lineNumber;
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}
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/**
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* Initialize the line number of the script statement causing the error.
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*
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* @param lineNumber the line number in the script source.
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* It should be positive number.
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*
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* @throws IllegalStateException if the method is called more then once.
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*/
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public final void initLineNumber(int lineNumber)
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{
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if (lineNumber <= 0) throw new IllegalArgumentException(String.valueOf(lineNumber));
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if (this.lineNumber > 0) throw new IllegalStateException();
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this.lineNumber = lineNumber;
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}
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/**
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* The column number of the location of the error, or zero if unknown.
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*/
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public final int columnNumber()
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{
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return columnNumber;
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}
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/**
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* Initialize the column number of the script statement causing the error.
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*
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* @param columnNumber the column number in the script source.
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* It should be positive number.
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*
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* @throws IllegalStateException if the method is called more then once.
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*/
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public final void initColumnNumber(int columnNumber)
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{
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if (columnNumber <= 0) throw new IllegalArgumentException(String.valueOf(columnNumber));
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if (this.columnNumber > 0) throw new IllegalStateException();
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this.columnNumber = columnNumber;
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}
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/**
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* The source text of the line causing the error, or null if unknown.
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*/
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public final String lineSource()
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{
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return lineSource;
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}
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/**
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* Initialize the text of the source line containing the error.
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*
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* @param lineSource the text of the source line responsible for the error.
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* It should not be <tt>null</tt>.
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*
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* @throws IllegalStateException if the method is called more then once.
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*/
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public final void initLineSource(String lineSource)
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{
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if (lineSource == null) throw new IllegalArgumentException();
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if (this.lineSource != null) throw new IllegalStateException();
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this.lineSource = lineSource;
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}
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final void recordErrorOrigin(String sourceName, int lineNumber,
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String lineSource, int columnNumber)
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{
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// XXX: for compatibility allow for now -1 to mean 0
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if (lineNumber == -1) {
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lineNumber = 0;
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}
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if (sourceName != null) {
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initSourceName(sourceName);
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}
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if (lineNumber != 0) {
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initLineNumber(lineNumber);
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}
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if (lineSource != null) {
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initLineSource(lineSource);
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}
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if (columnNumber != 0) {
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initColumnNumber(columnNumber);
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}
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}
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private String generateStackTrace()
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{
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// Get stable reference to work properly with concurrent access
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CharArrayWriter writer = new CharArrayWriter();
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super.printStackTrace(new PrintWriter(writer));
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String origStackTrace = writer.toString();
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Evaluator e = Context.createInterpreter();
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if (e != null)
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return e.getPatchedStack(this, origStackTrace);
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return null;
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}
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/**
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* Get a string representing the script stack of this exception.
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* If optimization is enabled, this corresponds to all java stack elements
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* with a source name ending with ".js".
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* @return a script stack dump
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* @since 1.6R6
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*/
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public String getScriptStackTrace()
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{
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return getScriptStackTrace(new FilenameFilter() {
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public boolean accept(File dir, String name) {
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return name.endsWith(".js");
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}
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});
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}
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/**
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* Get a string representing the script stack of this exception.
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* If optimization is enabled, this corresponds to all java stack elements
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* with a source name matching the <code>filter</code>.
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* @param filter the file name filter to determine whether a file is a
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* script file
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* @return a script stack dump
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* @since 1.6R6
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*/
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public String getScriptStackTrace(FilenameFilter filter)
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{
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List<String> interpreterStack = null;
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Evaluator interpreter = Context.createInterpreter();
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if (interpreter != null) {
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interpreterStack = interpreter.getScriptStack(this);
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}
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int interpreterStackIndex = 0;
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StringBuffer buffer = new StringBuffer();
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String lineSeparator = SecurityUtilities.getSystemProperty("line.separator");
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StackTraceElement[] stack = getStackTrace();
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for (int i = 0; i < stack.length; i++) {
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StackTraceElement e = stack[i];
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String name = e.getFileName();
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if (e.getLineNumber() > -1 && name != null &&
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filter.accept(null, name))
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{
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buffer.append("\tat ");
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buffer.append(e.getFileName());
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buffer.append(':');
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buffer.append(e.getLineNumber());
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buffer.append(lineSeparator);
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} else if (interpreterStack != null &&
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interpreterStack.size() > interpreterStackIndex &&
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"org.mozilla.javascript.Interpreter".equals(e.getClassName()) &&
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"interpretLoop".equals(e.getMethodName()))
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{
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buffer.append(interpreterStack.get(interpreterStackIndex++));
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}
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}
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return buffer.toString();
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}
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@Override
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public void printStackTrace(PrintWriter s)
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{
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if (interpreterStackInfo == null) {
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super.printStackTrace(s);
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} else {
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s.print(generateStackTrace());
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}
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}
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@Override
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public void printStackTrace(PrintStream s)
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{
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if (interpreterStackInfo == null) {
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super.printStackTrace(s);
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} else {
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s.print(generateStackTrace());
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}
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}
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private String sourceName;
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private int lineNumber;
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private String lineSource;
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private int columnNumber;
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Object interpreterStackInfo;
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int[] interpreterLineData;
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}
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