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gecko-dev/dom/base/nsDOMException.cpp

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12 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 "nsCOMPtr.h"
#include "nsCRTGlue.h"
#include "nsDOMClassInfoID.h"
#include "nsDOMError.h"
#include "nsDOMException.h"
#include "nsIDOMDOMException.h"
#include "nsIDOMFileException.h"
#include "nsIDOMSVGException.h"
#include "nsIDOMXPathException.h"
#include "nsIIDBDatabaseException.h"
#include "nsString.h"
#include "prprf.h"
#define DOM_MSG_DEF(val, message) {(val), #val, message},
#define DOM_MSG_DEF_(val, name, message) {(NS_ERROR_DOM_##val), name, message},
#define IMPL_INTERNAL_DOM_EXCEPTION_HEAD(classname, ifname) \
class classname : public nsBaseDOMException, \
public ifname \
{ \
public: \
classname(); \
virtual ~classname(); \
\
NS_DECL_ISUPPORTS_INHERITED
#define IMPL_INTERNAL_DOM_EXCEPTION_TAIL(classname, ifname, domname, module, \
mapping_function) \
}; \
\
classname::classname() {} \
classname::~classname() {} \
\
DOMCI_DATA(domname, classname) \
\
NS_IMPL_ADDREF_INHERITED(classname, nsBaseDOMException) \
NS_IMPL_RELEASE_INHERITED(classname, nsBaseDOMException) \
NS_INTERFACE_MAP_BEGIN(classname) \
NS_INTERFACE_MAP_ENTRY(ifname) \
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(domname) \
NS_INTERFACE_MAP_END_INHERITING(nsBaseDOMException) \
\
nsresult \
NS_New##domname(nsresult aNSResult, nsIException* aDefaultException, \
nsIException** aException) \
{ \
if (!(NS_ERROR_GET_MODULE(aNSResult) == module)) { \
NS_WARNING("Trying to create an exception for the wrong error module."); \
return NS_ERROR_FAILURE; \
} \
const char* name; \
const char* message; \
mapping_function(aNSResult, &name, &message); \
classname* inst = new classname(); \
NS_ENSURE_TRUE(inst, NS_ERROR_OUT_OF_MEMORY); \
inst->Init(aNSResult, name, message, aDefaultException); \
*aException = inst; \
NS_ADDREF(*aException); \
return NS_OK; \
}
static struct ResultStruct
{
nsresult mNSResult;
const char* mName;
const char* mMessage;
} gDOMErrorMsgMap[] = {
#include "domerr.msg"
{0, nsnull, nsnull} // sentinel to mark end of array
};
#undef DOM_MSG_DEF
#undef DOM_MSG_DEF_
static void
NSResultToNameAndMessage(nsresult aNSResult,
const char** aName,
const char** aMessage)
{
*aName = nsnull;
*aMessage = nsnull;
ResultStruct* result_struct = gDOMErrorMsgMap;
while (result_struct->mName) {
if (aNSResult == result_struct->mNSResult) {
*aName = result_struct->mName;
*aMessage = result_struct->mMessage;
return;
}
++result_struct;
}
NS_WARNING("Huh, someone is throwing non-DOM errors using the DOM module!");
return;
}
nsresult
NS_GetNameAndMessageForDOMNSResult(nsresult aNSResult, const char** aName,
const char** aMessage)
{
const char* name = nsnull;
const char* message = nsnull;
NSResultToNameAndMessage(aNSResult, &name, &message);
if (name && message) {
*aName = name;
*aMessage = message;
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
IMPL_INTERNAL_DOM_EXCEPTION_HEAD(nsDOMException, nsIDOMDOMException)
NS_DECL_NSIDOMDOMEXCEPTION
IMPL_INTERNAL_DOM_EXCEPTION_TAIL(nsDOMException, nsIDOMDOMException,
DOMException, NS_ERROR_MODULE_DOM,
NSResultToNameAndMessage)
NS_IMETHODIMP
nsDOMException::GetCode(PRUint16* aCode)
{
NS_ENSURE_ARG_POINTER(aCode);
nsresult result;
GetResult(&result);
*aCode = NS_ERROR_GET_CODE(result);
return NS_OK;
}
IMPL_INTERNAL_DOM_EXCEPTION_HEAD(nsSVGException, nsIDOMSVGException)
NS_DECL_NSIDOMSVGEXCEPTION
IMPL_INTERNAL_DOM_EXCEPTION_TAIL(nsSVGException, nsIDOMSVGException,
SVGException, NS_ERROR_MODULE_SVG,
NSResultToNameAndMessage)
NS_IMETHODIMP
nsSVGException::GetCode(PRUint16* aCode)
{
NS_ENSURE_ARG_POINTER(aCode);
nsresult result;
GetResult(&result);
*aCode = NS_ERROR_GET_CODE(result);
return NS_OK;
}
IMPL_INTERNAL_DOM_EXCEPTION_HEAD(nsXPathException, nsIDOMXPathException)
NS_DECL_NSIDOMXPATHEXCEPTION
IMPL_INTERNAL_DOM_EXCEPTION_TAIL(nsXPathException, nsIDOMXPathException,
XPathException, NS_ERROR_MODULE_DOM_XPATH,
NSResultToNameAndMessage)
NS_IMETHODIMP
nsXPathException::GetCode(PRUint16* aCode)
{
NS_ENSURE_ARG_POINTER(aCode);
nsresult result;
GetResult(&result);
*aCode = NS_ERROR_GET_CODE(result);
return NS_OK;
}
IMPL_INTERNAL_DOM_EXCEPTION_HEAD(nsDOMFileException, nsIDOMFileException)
NS_DECL_NSIDOMFILEEXCEPTION
IMPL_INTERNAL_DOM_EXCEPTION_TAIL(nsDOMFileException, nsIDOMFileException,
FileException, NS_ERROR_MODULE_DOM_FILE,
NSResultToNameAndMessage)
NS_IMETHODIMP
nsDOMFileException::GetCode(PRUint16* aCode)
{
NS_ENSURE_ARG_POINTER(aCode);
nsresult result;
GetResult(&result);
*aCode = NS_ERROR_GET_CODE(result);
return NS_OK;
}
IMPL_INTERNAL_DOM_EXCEPTION_HEAD(nsIDBDatabaseException,
nsIIDBDatabaseException)
NS_DECL_NSIIDBDATABASEEXCEPTION
IMPL_INTERNAL_DOM_EXCEPTION_TAIL(nsIDBDatabaseException,
nsIIDBDatabaseException,
IDBDatabaseException,
NS_ERROR_MODULE_DOM_INDEXEDDB,
NSResultToNameAndMessage)
NS_IMETHODIMP
nsIDBDatabaseException::GetCode(PRUint16* aCode)
{
NS_ASSERTION(aCode, "Null pointer!");
nsresult result;
GetResult(&result);
*aCode = NS_ERROR_GET_CODE(result);
return NS_OK;
}
nsBaseDOMException::nsBaseDOMException()
{
}
nsBaseDOMException::~nsBaseDOMException()
{
}
NS_IMPL_ISUPPORTS2(nsBaseDOMException, nsIException, nsIBaseDOMException)
NS_IMETHODIMP
nsBaseDOMException::GetMessageMoz(char **aMessage)
{
if (mMessage) {
*aMessage = NS_strdup(mMessage);
} else {
*aMessage = nsnull;
}
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetResult(PRUint32* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = mResult;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetName(char **aName)
{
NS_ENSURE_ARG_POINTER(aName);
if (mName) {
*aName = NS_strdup(mName);
} else {
*aName = nsnull;
}
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetFilename(char **aFilename)
{
if (mInner) {
return mInner->GetFilename(aFilename);
}
NS_ENSURE_ARG_POINTER(aFilename);
*aFilename = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetLineNumber(PRUint32 *aLineNumber)
{
if (mInner) {
return mInner->GetLineNumber(aLineNumber);
}
NS_ENSURE_ARG_POINTER(aLineNumber);
*aLineNumber = 0;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetColumnNumber(PRUint32 *aColumnNumber)
{
if (mInner) {
return mInner->GetColumnNumber(aColumnNumber);
}
NS_ENSURE_ARG_POINTER(aColumnNumber);
*aColumnNumber = 0;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetLocation(nsIStackFrame **aLocation)
{
if (mInner) {
return mInner->GetLocation(aLocation);
}
NS_ENSURE_ARG_POINTER(aLocation);
*aLocation = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetInner(nsIException **aInner)
{
NS_ENSURE_ARG_POINTER(aInner);
*aInner = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::GetData(nsISupports **aData)
{
if (mInner) {
return mInner->GetData(aData);
}
NS_ENSURE_ARG_POINTER(aData);
*aData = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsBaseDOMException::ToString(char **aReturn)
{
*aReturn = nsnull;
static const char defaultMsg[] = "<no message>";
static const char defaultLocation[] = "<unknown>";
static const char defaultName[] = "<unknown>";
static const char format[] =
"[Exception... \"%s\" code: \"%d\" nsresult: \"0x%x (%s)\" location: \"%s\"]";
nsCAutoString location;
if (mInner) {
nsXPIDLCString filename;
mInner->GetFilename(getter_Copies(filename));
if (!filename.IsEmpty()) {
PRUint32 line_nr = 0;
mInner->GetLineNumber(&line_nr);
char *temp = PR_smprintf("%s Line: %d", filename.get(), line_nr);
if (temp) {
location.Assign(temp);
PR_smprintf_free(temp);
}
}
}
if (location.IsEmpty()) {
location = defaultLocation;
}
const char* msg = mMessage ? mMessage : defaultMsg;
const char* resultName = mName ? mName : defaultName;
PRUint32 code = NS_ERROR_GET_CODE(mResult);
*aReturn = PR_smprintf(format, msg, code, mResult, resultName,
location.get());
return *aReturn ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
nsBaseDOMException::Init(nsresult aNSResult, const char* aName,
const char* aMessage,
nsIException* aDefaultException)
{
mResult = aNSResult;
mName = aName;
mMessage = aMessage;
mInner = aDefaultException;
return NS_OK;
}
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