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diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefaultErrorReporter.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefaultErrorReporter.java
new file mode 100644
index 0000000..c7d93d4
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+++ b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefaultErrorReporter.java
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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):
+ *   Norris Boyd
+ *
+ * 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;
+
+/**
+ * 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);
+        }
+    }
+}