implement exception constants defined in DOM level 3

b=245476, patch by jonathan.watt@strath.ac.uk, r=peterv, sr=jst

remove redundant declarations and correct comment
b=251824, patch by jonathan.watt@strath.ac.uk, r+sr=peterv

content/xslt/src/xpath/nsXPathException.cpp

@@ -1,116 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * 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 TransforMiiX XSLT processor code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2001
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Peter Van der Beken <peterv@propagandism.org>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-#include "nsXPathException.h"
-#include "nsCRT.h"
-#include "nsIDOMClassInfo.h"
-#include "nsIBaseDOMException.h"
-#include "prprf.h"
-
-static const char kInvalidExpressionErrName[] = "NS_ERROR_DOM_INVALID_EXPRESSION_ERR";
-static const char kInvalidExpressionErrMessage[] = NS_ERROR_DOM_INVALID_EXPRESSION_MSG;
-static const char kTypeErrName[] = "NS_ERROR_DOM_TYPE_ERR";
-static const char kTypeErrMessage[] = NS_ERROR_DOM_TYPE_MSG;
-
-static void
-TXResultToNameAndMessage(nsresult aNSResult,
-                         const char** aName,
-                         const char** aMessage);
-
-void
-TXResultToNameAndMessage(nsresult aNSResult,
-                         const char** aName,
-                         const char** aMessage)
-{
-    if (aNSResult == NS_ERROR_DOM_INVALID_EXPRESSION_ERR) {
-        *aName = kInvalidExpressionErrName;
-        *aMessage = kInvalidExpressionErrMessage;
-    }
-    else if (aNSResult == NS_ERROR_DOM_TYPE_ERR) {
-        *aName = kTypeErrName;
-        *aMessage = kTypeErrMessage;
-    }
-    else {
-        NS_WARNING("Huh, someone is throwing non-XPath DOM errors using the XPath DOM module!");
-        *aName = nsnull;
-        *aMessage = nsnull;
-    }
-
-    return;
-}
-
-
-IMPL_DOM_EXCEPTION_HEAD(nsXPathException, nsIDOMXPathException)
-  NS_DECL_NSIDOMXPATHEXCEPTION
-IMPL_DOM_EXCEPTION_TAIL(nsXPathException, nsIDOMXPathException, XPathException,
-                        NS_ERROR_MODULE_DOM_XPATH, TXResultToNameAndMessage)
-
-NS_IMETHODIMP
-nsXPathException::GetCode(PRUint16* aCode)
-{
-    NS_ENSURE_ARG_POINTER(aCode);
-    nsresult result;
-    mBase->GetResult(&result);
-    *aCode = NS_ERROR_GET_CODE(result);
-
-    return NS_OK;
-}
-
-
-NS_IMPL_ISUPPORTS1(nsXPathExceptionProvider, nsIExceptionProvider)
-
-nsXPathExceptionProvider::nsXPathExceptionProvider()
-{
-}
-
-nsXPathExceptionProvider::~nsXPathExceptionProvider()
-{
-}
-
-NS_IMETHODIMP
-nsXPathExceptionProvider::GetException(nsresult aNSResult,
-                                       nsIException *aDefaultException,
-                                       nsIException **aException)
-{
-    NS_ENSURE_ARG_POINTER(aException);
-
-    NS_NewXPathException(aNSResult, aDefaultException, aException);
-    NS_ENSURE_TRUE(*aException, NS_ERROR_OUT_OF_MEMORY);
-
-    return NS_OK;
-}