gecko/dom/base/nsDOMException.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 04:12:37 -07:00
/* 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/. */
#include "nsCOMPtr.h"
#include "nsCRTGlue.h"
#include "nsContentUtils.h"
#include "nsDOMClassInfoID.h"
#include "nsError.h"
#include "nsDOMException.h"
#include "nsIDOMDOMException.h"
#include "nsIDocument.h"
#include "nsString.h"
#include "prprf.h"
enum DOM4ErrorTypeCodeMap {
/* DOM4 errors from http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#domexception */
IndexSizeError = nsIDOMDOMException::INDEX_SIZE_ERR,
HierarchyRequestError = nsIDOMDOMException::HIERARCHY_REQUEST_ERR,
WrongDocumentError = nsIDOMDOMException::WRONG_DOCUMENT_ERR,
InvalidCharacterError = nsIDOMDOMException::INVALID_CHARACTER_ERR,
NoModificationAllowedError = nsIDOMDOMException::NO_MODIFICATION_ALLOWED_ERR,
NotFoundError = nsIDOMDOMException::NOT_FOUND_ERR,
NotSupportedError = nsIDOMDOMException::NOT_SUPPORTED_ERR,
// Can't remove until setNamedItem is removed
InUseAttributeError = nsIDOMDOMException::INUSE_ATTRIBUTE_ERR,
InvalidStateError = nsIDOMDOMException::INVALID_STATE_ERR,
SyntaxError = nsIDOMDOMException::SYNTAX_ERR,
InvalidModificationError = nsIDOMDOMException::INVALID_MODIFICATION_ERR,
NamespaceError = nsIDOMDOMException::NAMESPACE_ERR,
InvalidAccessError = nsIDOMDOMException::INVALID_ACCESS_ERR,
TypeMismatchError = nsIDOMDOMException::TYPE_MISMATCH_ERR,
SecurityError = nsIDOMDOMException::SECURITY_ERR,
NetworkError = nsIDOMDOMException::NETWORK_ERR,
AbortError = nsIDOMDOMException::ABORT_ERR,
URLMismatchError = nsIDOMDOMException::URL_MISMATCH_ERR,
QuotaExceededError = nsIDOMDOMException::QUOTA_EXCEEDED_ERR,
TimeoutError = nsIDOMDOMException::TIMEOUT_ERR,
InvalidNodeTypeError = nsIDOMDOMException::INVALID_NODE_TYPE_ERR,
DataCloneError = nsIDOMDOMException::DATA_CLONE_ERR,
EncodingError = 0,
/* XXX Should be JavaScript native errors */
TypeError = 0,
RangeError = 0,
/* IndexedDB errors http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#exceptions */
UnknownError = 0,
ConstraintError = 0,
DataError = 0,
TransactionInactiveError = 0,
ReadOnlyError = 0,
VersionError = 0,
/* File API errors http://dev.w3.org/2006/webapi/FileAPI/#ErrorAndException */
NotReadableError = 0,
/* FileHandle API errors */
LockedFileInactiveError = 0,
};
#define DOM4_MSG_DEF(name, message, nsresult) {(nsresult), name, #name, message},
#define DOM_MSG_DEF(val, message) {(val), NS_ERROR_GET_CODE(val), #val, message},
static struct ResultStruct
{
nsresult mNSResult;
uint16_t mCode;
const char* mName;
const char* mMessage;
} gDOMErrorMsgMap[] = {
#include "domerr.msg"
{NS_OK, 0, nullptr, nullptr} // sentinel to mark end of array
};
#undef DOM4_MSG_DEF
#undef DOM_MSG_DEF
static void
NSResultToNameAndMessage(nsresult aNSResult,
const char** aName,
const char** aMessage,
uint16_t* aCode)
{
*aName = nullptr;
*aMessage = nullptr;
*aCode = 0;
ResultStruct* result_struct = gDOMErrorMsgMap;
while (result_struct->mName) {
if (aNSResult == result_struct->mNSResult) {
*aName = result_struct->mName;
*aMessage = result_struct->mMessage;
*aCode = result_struct->mCode;
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, uint16_t* aCode)
{
const char* name = nullptr;
const char* message = nullptr;
uint16_t code = 0;
NSResultToNameAndMessage(aNSResult, &name, &message, &code);
if (name && message) {
*aName = name;
*aMessage = message;
if (aCode) {
*aCode = code;
}
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
class nsDOMException : public nsIException,
public nsIDOMDOMException
{
public:
nsDOMException() {}
virtual ~nsDOMException() {}
NS_DECL_ISUPPORTS
NS_DECL_NSIEXCEPTION
NS_IMETHOD Init(nsresult aNSResult, const char* aName,
const char* aMessage, uint16_t aCode,
nsIException* aDefaultException);
NS_DECL_NSIDOMDOMEXCEPTION
protected:
const char* mName;
const char* mMessage;
nsCOMPtr<nsIException> mInner;
nsresult mResult;
uint16_t mCode;
};
DOMCI_DATA(DOMException, nsDOMException)
NS_IMPL_ADDREF(nsDOMException)
NS_IMPL_RELEASE(nsDOMException)
NS_INTERFACE_MAP_BEGIN(nsDOMException)
NS_INTERFACE_MAP_ENTRY(nsIException)
NS_INTERFACE_MAP_ENTRY(nsIDOMDOMException)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIException)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(DOMException)
NS_INTERFACE_MAP_END
nsresult
NS_NewDOMException(nsresult aNSResult, nsIException* aDefaultException,
nsIException** aException)
{
const char* name;
const char* message;
uint16_t code;
NSResultToNameAndMessage(aNSResult, &name, &message, &code);
nsDOMException* inst = new nsDOMException();
inst->Init(aNSResult, name, message, code, aDefaultException);
*aException = inst;
NS_ADDREF(*aException);
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetCode(uint16_t* aCode)
{
NS_ENSURE_ARG_POINTER(aCode);
*aCode = mCode;
// Warn only when the code was changed (other than DOM Core)
// or the code is useless (zero)
if (NS_ERROR_GET_MODULE(mResult) != NS_ERROR_MODULE_DOM || !mCode) {
nsCOMPtr<nsIDocument> doc = nsContentUtils::GetDocumentFromCaller();
if (doc) {
doc->WarnOnceAbout(nsIDocument::eDOMExceptionCode);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetMessageMoz(char **aMessage)
{
if (mMessage) {
*aMessage = NS_strdup(mMessage);
} else {
*aMessage = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetResult(nsresult* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = mResult;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetName(char **aName)
{
NS_ENSURE_ARG_POINTER(aName);
if (mName) {
*aName = NS_strdup(mName);
} else {
*aName = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetFilename(char **aFilename)
{
if (mInner) {
return mInner->GetFilename(aFilename);
}
NS_ENSURE_ARG_POINTER(aFilename);
*aFilename = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetLineNumber(uint32_t *aLineNumber)
{
if (mInner) {
return mInner->GetLineNumber(aLineNumber);
}
NS_ENSURE_ARG_POINTER(aLineNumber);
*aLineNumber = 0;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetColumnNumber(uint32_t *aColumnNumber)
{
if (mInner) {
return mInner->GetColumnNumber(aColumnNumber);
}
NS_ENSURE_ARG_POINTER(aColumnNumber);
*aColumnNumber = 0;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetLocation(nsIStackFrame **aLocation)
{
if (mInner) {
return mInner->GetLocation(aLocation);
}
NS_ENSURE_ARG_POINTER(aLocation);
*aLocation = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetInner(nsIException **aInner)
{
NS_ENSURE_ARG_POINTER(aInner);
*aInner = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::GetData(nsISupports **aData)
{
if (mInner) {
return mInner->GetData(aData);
}
NS_ENSURE_ARG_POINTER(aData);
*aData = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDOMException::ToString(char **aReturn)
{
*aReturn = nullptr;
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\"]";
nsAutoCString location;
if (mInner) {
nsXPIDLCString filename;
mInner->GetFilename(getter_Copies(filename));
if (!filename.IsEmpty()) {
uint32_t 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;
*aReturn = PR_smprintf(format, msg, mCode, mResult, resultName,
location.get());
return *aReturn ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
nsDOMException::Init(nsresult aNSResult, const char* aName,
const char* aMessage, uint16_t aCode,
nsIException* aDefaultException)
{
mResult = aNSResult;
mName = aName;
mMessage = aMessage;
mCode = aCode;
mInner = aDefaultException;
return NS_OK;
}