1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/base/DOMException.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,675 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/dom/DOMException.h"
1.10 +
1.11 +#include "jsprf.h"
1.12 +#include "js/OldDebugAPI.h"
1.13 +#include "mozilla/ArrayUtils.h"
1.14 +#include "mozilla/HoldDropJSObjects.h"
1.15 +#include "mozilla/dom/Exceptions.h"
1.16 +#include "nsContentUtils.h"
1.17 +#include "nsCOMPtr.h"
1.18 +#include "nsIClassInfoImpl.h"
1.19 +#include "nsIDocument.h"
1.20 +#include "nsIDOMDOMException.h"
1.21 +#include "nsIException.h"
1.22 +#include "nsIProgrammingLanguage.h"
1.23 +#include "nsMemory.h"
1.24 +#include "prprf.h"
1.25 +#include "xpcprivate.h"
1.26 +
1.27 +#include "mozilla/dom/DOMExceptionBinding.h"
1.28 +
1.29 +using namespace mozilla;
1.30 +
1.31 +enum DOM4ErrorTypeCodeMap {
1.32 + /* DOM4 errors from http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#domexception */
1.33 + IndexSizeError = nsIDOMDOMException::INDEX_SIZE_ERR,
1.34 + HierarchyRequestError = nsIDOMDOMException::HIERARCHY_REQUEST_ERR,
1.35 + WrongDocumentError = nsIDOMDOMException::WRONG_DOCUMENT_ERR,
1.36 + InvalidCharacterError = nsIDOMDOMException::INVALID_CHARACTER_ERR,
1.37 + NoModificationAllowedError = nsIDOMDOMException::NO_MODIFICATION_ALLOWED_ERR,
1.38 + NotFoundError = nsIDOMDOMException::NOT_FOUND_ERR,
1.39 + NotSupportedError = nsIDOMDOMException::NOT_SUPPORTED_ERR,
1.40 + // Can't remove until setNamedItem is removed
1.41 + InUseAttributeError = nsIDOMDOMException::INUSE_ATTRIBUTE_ERR,
1.42 + InvalidStateError = nsIDOMDOMException::INVALID_STATE_ERR,
1.43 + SyntaxError = nsIDOMDOMException::SYNTAX_ERR,
1.44 + InvalidModificationError = nsIDOMDOMException::INVALID_MODIFICATION_ERR,
1.45 + NamespaceError = nsIDOMDOMException::NAMESPACE_ERR,
1.46 + InvalidAccessError = nsIDOMDOMException::INVALID_ACCESS_ERR,
1.47 + TypeMismatchError = nsIDOMDOMException::TYPE_MISMATCH_ERR,
1.48 + SecurityError = nsIDOMDOMException::SECURITY_ERR,
1.49 + NetworkError = nsIDOMDOMException::NETWORK_ERR,
1.50 + AbortError = nsIDOMDOMException::ABORT_ERR,
1.51 + URLMismatchError = nsIDOMDOMException::URL_MISMATCH_ERR,
1.52 + QuotaExceededError = nsIDOMDOMException::QUOTA_EXCEEDED_ERR,
1.53 + TimeoutError = nsIDOMDOMException::TIMEOUT_ERR,
1.54 + InvalidNodeTypeError = nsIDOMDOMException::INVALID_NODE_TYPE_ERR,
1.55 + DataCloneError = nsIDOMDOMException::DATA_CLONE_ERR,
1.56 + InvalidPointerId = nsIDOMDOMException::INVALID_POINTER_ERR,
1.57 + EncodingError = 0,
1.58 +
1.59 + /* XXX Should be JavaScript native errors */
1.60 + TypeError = 0,
1.61 + RangeError = 0,
1.62 +
1.63 + /* IndexedDB errors http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#exceptions */
1.64 + UnknownError = 0,
1.65 + ConstraintError = 0,
1.66 + DataError = 0,
1.67 + TransactionInactiveError = 0,
1.68 + ReadOnlyError = 0,
1.69 + VersionError = 0,
1.70 +
1.71 + /* File API errors http://dev.w3.org/2006/webapi/FileAPI/#ErrorAndException */
1.72 + NotReadableError = 0,
1.73 +
1.74 + /* FileHandle API errors */
1.75 + LockedFileInactiveError = 0,
1.76 +};
1.77 +
1.78 +#define DOM4_MSG_DEF(name, message, nsresult) {(nsresult), name, #name, message},
1.79 +#define DOM_MSG_DEF(val, message) {(val), NS_ERROR_GET_CODE(val), #val, message},
1.80 +
1.81 +static const struct ResultStruct
1.82 +{
1.83 + nsresult mNSResult;
1.84 + uint16_t mCode;
1.85 + const char* mName;
1.86 + const char* mMessage;
1.87 +} sDOMErrorMsgMap[] = {
1.88 +#include "domerr.msg"
1.89 +};
1.90 +
1.91 +#undef DOM4_MSG_DEF
1.92 +#undef DOM_MSG_DEF
1.93 +
1.94 +static void
1.95 +NSResultToNameAndMessage(nsresult aNSResult,
1.96 + nsCString& aName,
1.97 + nsCString& aMessage,
1.98 + uint16_t* aCode)
1.99 +{
1.100 + aName.Truncate();
1.101 + aMessage.Truncate();
1.102 + *aCode = 0;
1.103 + for (uint32_t idx = 0; idx < ArrayLength(sDOMErrorMsgMap); idx++) {
1.104 + if (aNSResult == sDOMErrorMsgMap[idx].mNSResult) {
1.105 + aName.Rebind(sDOMErrorMsgMap[idx].mName,
1.106 + strlen(sDOMErrorMsgMap[idx].mName));
1.107 + aMessage.Rebind(sDOMErrorMsgMap[idx].mMessage,
1.108 + strlen(sDOMErrorMsgMap[idx].mMessage));
1.109 + *aCode = sDOMErrorMsgMap[idx].mCode;
1.110 + return;
1.111 + }
1.112 + }
1.113 +
1.114 + NS_WARNING("Huh, someone is throwing non-DOM errors using the DOM module!");
1.115 +
1.116 + return;
1.117 +}
1.118 +
1.119 +nsresult
1.120 +NS_GetNameAndMessageForDOMNSResult(nsresult aNSResult, nsACString& aName,
1.121 + nsACString& aMessage, uint16_t* aCode)
1.122 +{
1.123 + nsCString name;
1.124 + nsCString message;
1.125 + uint16_t code = 0;
1.126 + NSResultToNameAndMessage(aNSResult, name, message, &code);
1.127 +
1.128 + if (!name.IsEmpty() && !message.IsEmpty()) {
1.129 + aName = name;
1.130 + aMessage = message;
1.131 + if (aCode) {
1.132 + *aCode = code;
1.133 + }
1.134 + return NS_OK;
1.135 + }
1.136 +
1.137 + return NS_ERROR_NOT_AVAILABLE;
1.138 +}
1.139 +
1.140 +namespace mozilla {
1.141 +namespace dom {
1.142 +
1.143 +bool Exception::sEverMadeOneFromFactory = false;
1.144 +
1.145 +NS_IMPL_CLASSINFO(Exception, nullptr, nsIClassInfo::DOM_OBJECT,
1.146 + NS_XPCEXCEPTION_CID)
1.147 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Exception)
1.148 + NS_INTERFACE_MAP_ENTRY(nsIException)
1.149 + NS_INTERFACE_MAP_ENTRY(nsIXPCException)
1.150 + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIException)
1.151 + NS_IMPL_QUERY_CLASSINFO(Exception)
1.152 +NS_INTERFACE_MAP_END
1.153 +
1.154 +NS_IMPL_CYCLE_COLLECTING_ADDREF(Exception)
1.155 +NS_IMPL_CYCLE_COLLECTING_RELEASE(Exception)
1.156 +
1.157 +NS_IMPL_CYCLE_COLLECTION_CLASS(Exception)
1.158 +
1.159 +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Exception)
1.160 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocation)
1.161 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInner)
1.162 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
1.163 +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
1.164 +
1.165 +NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Exception)
1.166 + NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
1.167 + NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mThrownJSVal);
1.168 +NS_IMPL_CYCLE_COLLECTION_TRACE_END
1.169 +
1.170 +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Exception)
1.171 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocation)
1.172 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mInner)
1.173 + NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
1.174 + tmp->mThrownJSVal.setNull();
1.175 +NS_IMPL_CYCLE_COLLECTION_UNLINK_END
1.176 +
1.177 +NS_IMPL_CI_INTERFACE_GETTER(Exception, nsIXPCException)
1.178 +
1.179 +Exception::Exception(const nsACString& aMessage,
1.180 + nsresult aResult,
1.181 + const nsACString& aName,
1.182 + nsIStackFrame *aLocation,
1.183 + nsISupports *aData)
1.184 +: mResult(NS_OK),
1.185 + mLineNumber(0),
1.186 + mInitialized(false),
1.187 + mHoldingJSVal(false)
1.188 +{
1.189 + SetIsDOMBinding();
1.190 +
1.191 + // A little hack... The nsIGenericModule nsIClassInfo scheme relies on there
1.192 + // having been at least one instance made via the factory. Otherwise, the
1.193 + // shared factory/classinsance object never gets created and our QI getter
1.194 + // for our instance's pointer to our nsIClassInfo will always return null.
1.195 + // This is bad because it means that wrapped exceptions will never have a
1.196 + // shared prototype. So... We force one to be created via the factory
1.197 + // *once* and then go about our business.
1.198 + if (!sEverMadeOneFromFactory) {
1.199 + nsCOMPtr<nsIXPCException> e =
1.200 + do_CreateInstance(XPC_EXCEPTION_CONTRACTID);
1.201 + sEverMadeOneFromFactory = true;
1.202 + }
1.203 +
1.204 + nsCOMPtr<nsIStackFrame> location;
1.205 + if (aLocation) {
1.206 + location = aLocation;
1.207 + } else {
1.208 + location = GetCurrentJSStack();
1.209 + // it is legal for there to be no active JS stack, if C++ code
1.210 + // is operating on a JS-implemented interface pointer without
1.211 + // having been called in turn by JS. This happens in the JS
1.212 + // component loader, and will become more common as additional
1.213 + // components are implemented in JS.
1.214 + }
1.215 + // We want to trim off any leading native 'dataless' frames
1.216 + if (location) {
1.217 + while (1) {
1.218 + uint32_t language;
1.219 + int32_t lineNumber;
1.220 + if (NS_FAILED(location->GetLanguage(&language)) ||
1.221 + language == nsIProgrammingLanguage::JAVASCRIPT ||
1.222 + NS_FAILED(location->GetLineNumber(&lineNumber)) ||
1.223 + lineNumber) {
1.224 + break;
1.225 + }
1.226 + nsCOMPtr<nsIStackFrame> caller;
1.227 + if (NS_FAILED(location->GetCaller(getter_AddRefs(caller))) || !caller) {
1.228 + break;
1.229 + }
1.230 + location = caller;
1.231 + }
1.232 + }
1.233 +
1.234 + Initialize(aMessage, aResult, aName, location, aData, nullptr);
1.235 +}
1.236 +
1.237 +Exception::Exception()
1.238 + : mResult(NS_OK),
1.239 + mLineNumber(-1),
1.240 + mInitialized(false),
1.241 + mHoldingJSVal(false)
1.242 +{
1.243 +}
1.244 +
1.245 +Exception::~Exception()
1.246 +{
1.247 + if (mHoldingJSVal) {
1.248 + MOZ_ASSERT(NS_IsMainThread());
1.249 +
1.250 + mozilla::DropJSObjects(this);
1.251 + }
1.252 +}
1.253 +
1.254 +bool
1.255 +Exception::StealJSVal(JS::Value* aVp)
1.256 +{
1.257 + MOZ_ASSERT(NS_IsMainThread());
1.258 +
1.259 + if (mHoldingJSVal) {
1.260 + *aVp = mThrownJSVal;
1.261 + mThrownJSVal.setNull();
1.262 +
1.263 + mozilla::DropJSObjects(this);
1.264 + mHoldingJSVal = false;
1.265 + return true;
1.266 + }
1.267 +
1.268 + return false;
1.269 +}
1.270 +
1.271 +void
1.272 +Exception::StowJSVal(JS::Value& aVp)
1.273 +{
1.274 + MOZ_ASSERT(NS_IsMainThread());
1.275 +
1.276 + mThrownJSVal = aVp;
1.277 + if (!mHoldingJSVal) {
1.278 + mozilla::HoldJSObjects(this);
1.279 + mHoldingJSVal = true;
1.280 + }
1.281 +}
1.282 +
1.283 +/* readonly attribute AUTF8String message; */
1.284 +NS_IMETHODIMP
1.285 +Exception::GetMessageMoz(nsACString& aMessage)
1.286 +{
1.287 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.288 +
1.289 + aMessage.Assign(mMessage);
1.290 + return NS_OK;
1.291 +}
1.292 +
1.293 +/* readonly attribute nsresult result; */
1.294 +NS_IMETHODIMP
1.295 +Exception::GetResult(nsresult* aResult)
1.296 +{
1.297 + NS_ENSURE_ARG_POINTER(aResult);
1.298 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.299 +
1.300 + *aResult = mResult;
1.301 + return NS_OK;
1.302 +}
1.303 +
1.304 +/* readonly attribute AUTF8String name; */
1.305 +NS_IMETHODIMP
1.306 +Exception::GetName(nsACString& aName)
1.307 +{
1.308 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.309 +
1.310 + if (!mName.IsEmpty()) {
1.311 + aName.Assign(mName);
1.312 + } else {
1.313 + aName.Truncate();
1.314 +
1.315 + const char* name = nullptr;
1.316 + nsXPCException::NameAndFormatForNSResult(mResult, &name, nullptr);
1.317 +
1.318 + if (name) {
1.319 + aName.Assign(name);
1.320 + }
1.321 + }
1.322 +
1.323 + return NS_OK;
1.324 +}
1.325 +
1.326 +/* readonly attribute AString filename; */
1.327 +NS_IMETHODIMP
1.328 +Exception::GetFilename(nsAString& aFilename)
1.329 +{
1.330 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.331 +
1.332 + if (mLocation) {
1.333 + return mLocation->GetFilename(aFilename);
1.334 + }
1.335 +
1.336 + aFilename.Assign(mFilename);
1.337 + return NS_OK;
1.338 +}
1.339 +
1.340 +/* readonly attribute uint32_t lineNumber; */
1.341 +NS_IMETHODIMP
1.342 +Exception::GetLineNumber(uint32_t *aLineNumber)
1.343 +{
1.344 + NS_ENSURE_ARG_POINTER(aLineNumber);
1.345 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.346 +
1.347 + if (mLocation) {
1.348 + int32_t lineno;
1.349 + nsresult rv = mLocation->GetLineNumber(&lineno);
1.350 + *aLineNumber = lineno;
1.351 + return rv;
1.352 + }
1.353 +
1.354 + *aLineNumber = mLineNumber;
1.355 + return NS_OK;
1.356 +}
1.357 +
1.358 +/* readonly attribute uint32_t columnNumber; */
1.359 +NS_IMETHODIMP
1.360 +Exception::GetColumnNumber(uint32_t* aColumnNumber)
1.361 +{
1.362 + NS_ENSURE_ARG_POINTER(aColumnNumber);
1.363 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.364 +
1.365 + *aColumnNumber = 0;
1.366 + return NS_OK;
1.367 +}
1.368 +
1.369 +/* readonly attribute nsIStackFrame location; */
1.370 +NS_IMETHODIMP
1.371 +Exception::GetLocation(nsIStackFrame** aLocation)
1.372 +{
1.373 + NS_ENSURE_ARG_POINTER(aLocation);
1.374 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.375 +
1.376 + nsCOMPtr<nsIStackFrame> location = mLocation;
1.377 + location.forget(aLocation);
1.378 + return NS_OK;
1.379 +}
1.380 +
1.381 +/* readonly attribute nsISupports data; */
1.382 +NS_IMETHODIMP
1.383 +Exception::GetData(nsISupports** aData)
1.384 +{
1.385 + NS_ENSURE_ARG_POINTER(aData);
1.386 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.387 +
1.388 + nsCOMPtr<nsISupports> data = mData;
1.389 + data.forget(aData);
1.390 + return NS_OK;
1.391 +}
1.392 +
1.393 +/* readonly attribute nsIException inner; */
1.394 +NS_IMETHODIMP
1.395 +Exception::GetInner(nsIException** aException)
1.396 +{
1.397 + NS_ENSURE_ARG_POINTER(aException);
1.398 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.399 +
1.400 + nsCOMPtr<nsIException> inner = mInner;
1.401 + inner.forget(aException);
1.402 + return NS_OK;
1.403 +}
1.404 +
1.405 +/* AUTF8String toString (); */
1.406 +NS_IMETHODIMP
1.407 +Exception::ToString(nsACString& _retval)
1.408 +{
1.409 + NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
1.410 +
1.411 + static const char defaultMsg[] = "<no message>";
1.412 + static const char defaultLocation[] = "<unknown>";
1.413 + static const char format[] =
1.414 +"[Exception... \"%s\" nsresult: \"0x%x (%s)\" location: \"%s\" data: %s]";
1.415 +
1.416 + nsCString location;
1.417 +
1.418 + if (mLocation) {
1.419 + // we need to free this if it does not fail
1.420 + nsresult rv = mLocation->ToString(location);
1.421 + NS_ENSURE_SUCCESS(rv, rv);
1.422 + }
1.423 +
1.424 + if (location.IsEmpty()) {
1.425 + location.Assign(defaultLocation);
1.426 + }
1.427 +
1.428 + const char* msg = mMessage.IsEmpty() ? nullptr : mMessage.get();
1.429 +
1.430 + const char* resultName = mName.IsEmpty() ? nullptr: mName.get();
1.431 + if (!resultName &&
1.432 + !nsXPCException::NameAndFormatForNSResult(mResult, &resultName,
1.433 + (!msg) ? &msg : nullptr)) {
1.434 + if (!msg) {
1.435 + msg = defaultMsg;
1.436 + }
1.437 + resultName = "<unknown>";
1.438 + }
1.439 + const char* data = mData ? "yes" : "no";
1.440 +
1.441 + _retval.Truncate();
1.442 + _retval.AppendPrintf(format, msg, mResult, resultName,
1.443 + location.get(), data);
1.444 + return NS_OK;
1.445 +}
1.446 +
1.447 +/* void initialize (in AUTF8String aMessage, in nsresult aResult,
1.448 + * in AUTF8String aName, in nsIStackFrame aLocation,
1.449 + * in nsISupports aData, in nsIException aInner); */
1.450 +NS_IMETHODIMP
1.451 +Exception::Initialize(const nsACString& aMessage, nsresult aResult,
1.452 + const nsACString& aName, nsIStackFrame *aLocation,
1.453 + nsISupports *aData, nsIException *aInner)
1.454 +{
1.455 + NS_ENSURE_FALSE(mInitialized, NS_ERROR_ALREADY_INITIALIZED);
1.456 +
1.457 + mMessage = aMessage;
1.458 + mName = aName;
1.459 + mResult = aResult;
1.460 +
1.461 + if (aLocation) {
1.462 + mLocation = aLocation;
1.463 + } else {
1.464 + nsresult rv;
1.465 + nsXPConnect* xpc = nsXPConnect::XPConnect();
1.466 + rv = xpc->GetCurrentJSStack(getter_AddRefs(mLocation));
1.467 + if (NS_FAILED(rv)) {
1.468 + return rv;
1.469 + }
1.470 + }
1.471 +
1.472 + mData = aData;
1.473 + mInner = aInner;
1.474 +
1.475 + mInitialized = true;
1.476 + return NS_OK;
1.477 +}
1.478 +
1.479 +JSObject*
1.480 +Exception::WrapObject(JSContext* cx)
1.481 +{
1.482 + return ExceptionBinding::Wrap(cx, this);
1.483 +}
1.484 +
1.485 +void
1.486 +Exception::GetMessageMoz(nsString& retval)
1.487 +{
1.488 + nsCString str;
1.489 +#ifdef DEBUG
1.490 + DebugOnly<nsresult> rv =
1.491 +#endif
1.492 + GetMessageMoz(str);
1.493 + MOZ_ASSERT(NS_SUCCEEDED(rv));
1.494 + CopyUTF8toUTF16(str, retval);
1.495 +}
1.496 +
1.497 +uint32_t
1.498 +Exception::Result() const
1.499 +{
1.500 + return (uint32_t)mResult;
1.501 +}
1.502 +
1.503 +void
1.504 +Exception::GetName(nsString& retval)
1.505 +{
1.506 + nsCString str;
1.507 +#ifdef DEBUG
1.508 + DebugOnly<nsresult> rv =
1.509 +#endif
1.510 + GetName(str);
1.511 + MOZ_ASSERT(NS_SUCCEEDED(rv));
1.512 + CopyUTF8toUTF16(str, retval);
1.513 +}
1.514 +
1.515 +uint32_t
1.516 +Exception::LineNumber() const
1.517 +{
1.518 + if (mLocation) {
1.519 + int32_t lineno;
1.520 + if (NS_SUCCEEDED(mLocation->GetLineNumber(&lineno))) {
1.521 + return lineno;
1.522 + }
1.523 + return 0;
1.524 + }
1.525 +
1.526 + return mLineNumber;
1.527 +}
1.528 +
1.529 +uint32_t
1.530 +Exception::ColumnNumber() const
1.531 +{
1.532 + return 0;
1.533 +}
1.534 +
1.535 +already_AddRefed<nsIStackFrame>
1.536 +Exception::GetLocation() const
1.537 +{
1.538 + nsCOMPtr<nsIStackFrame> location = mLocation;
1.539 + return location.forget();
1.540 +}
1.541 +
1.542 +already_AddRefed<nsISupports>
1.543 +Exception::GetInner() const
1.544 +{
1.545 + nsCOMPtr<nsIException> inner = mInner;
1.546 + return inner.forget();
1.547 +}
1.548 +
1.549 +already_AddRefed<nsISupports>
1.550 +Exception::GetData() const
1.551 +{
1.552 + nsCOMPtr<nsISupports> data = mData;
1.553 + return data.forget();
1.554 +}
1.555 +
1.556 +void
1.557 +Exception::Stringify(nsString& retval)
1.558 +{
1.559 + nsCString str;
1.560 +#ifdef DEBUG
1.561 + DebugOnly<nsresult> rv =
1.562 +#endif
1.563 + ToString(str);
1.564 + MOZ_ASSERT(NS_SUCCEEDED(rv));
1.565 + CopyUTF8toUTF16(str, retval);
1.566 +}
1.567 +
1.568 +NS_IMPL_ADDREF_INHERITED(DOMException, Exception)
1.569 +NS_IMPL_RELEASE_INHERITED(DOMException, Exception)
1.570 +NS_INTERFACE_MAP_BEGIN(DOMException)
1.571 + NS_INTERFACE_MAP_ENTRY(nsIDOMDOMException)
1.572 +NS_INTERFACE_MAP_END_INHERITING(Exception)
1.573 +
1.574 +DOMException::DOMException(nsresult aRv, const nsACString& aMessage,
1.575 + const nsACString& aName, uint16_t aCode)
1.576 + : Exception(EmptyCString(), aRv, EmptyCString(), nullptr, nullptr),
1.577 + mName(aName),
1.578 + mMessage(aMessage),
1.579 + mCode(aCode)
1.580 +{
1.581 + SetIsDOMBinding();
1.582 +}
1.583 +
1.584 +NS_IMETHODIMP
1.585 +DOMException::GetCode(uint16_t* aCode)
1.586 +{
1.587 + NS_ENSURE_ARG_POINTER(aCode);
1.588 + *aCode = mCode;
1.589 +
1.590 + // Warn only when the code was changed (other than DOM Core)
1.591 + // or the code is useless (zero)
1.592 + if (NS_ERROR_GET_MODULE(mResult) != NS_ERROR_MODULE_DOM || !mCode) {
1.593 + nsCOMPtr<nsIDocument> doc = nsContentUtils::GetDocumentFromCaller();
1.594 + if (doc) {
1.595 + doc->WarnOnceAbout(nsIDocument::eDOMExceptionCode);
1.596 + }
1.597 + }
1.598 +
1.599 + return NS_OK;
1.600 +}
1.601 +
1.602 +NS_IMETHODIMP
1.603 +DOMException::ToString(nsACString& aReturn)
1.604 +{
1.605 + aReturn.Truncate();
1.606 +
1.607 + static const char defaultMsg[] = "<no message>";
1.608 + static const char defaultLocation[] = "<unknown>";
1.609 + static const char defaultName[] = "<unknown>";
1.610 + static const char format[] =
1.611 + "[Exception... \"%s\" code: \"%d\" nsresult: \"0x%x (%s)\" location: \"%s\"]";
1.612 +
1.613 + nsAutoCString location;
1.614 +
1.615 + if (mInner) {
1.616 + nsString filename;
1.617 + mInner->GetFilename(filename);
1.618 +
1.619 + if (!filename.IsEmpty()) {
1.620 + uint32_t line_nr = 0;
1.621 +
1.622 + mInner->GetLineNumber(&line_nr);
1.623 +
1.624 + char *temp = PR_smprintf("%s Line: %d",
1.625 + NS_ConvertUTF16toUTF8(filename).get(),
1.626 + line_nr);
1.627 + if (temp) {
1.628 + location.Assign(temp);
1.629 + PR_smprintf_free(temp);
1.630 + }
1.631 + }
1.632 + }
1.633 +
1.634 + if (location.IsEmpty()) {
1.635 + location = defaultLocation;
1.636 + }
1.637 +
1.638 + const char* msg = !mMessage.IsEmpty() ? mMessage.get() : defaultMsg;
1.639 + const char* resultName = !mName.IsEmpty() ? mName.get() : defaultName;
1.640 +
1.641 + aReturn.AppendPrintf(format, msg, mCode, mResult, resultName,
1.642 + location.get());
1.643 +
1.644 + return NS_OK;
1.645 +}
1.646 +
1.647 +void
1.648 +DOMException::GetName(nsString& retval)
1.649 +{
1.650 + CopyUTF8toUTF16(mName, retval);
1.651 +}
1.652 +
1.653 +void
1.654 +DOMException::GetMessageMoz(nsString& retval)
1.655 +{
1.656 + CopyUTF8toUTF16(mMessage, retval);
1.657 +}
1.658 +
1.659 +JSObject*
1.660 +DOMException::WrapObject(JSContext* aCx)
1.661 +{
1.662 + return DOMExceptionBinding::Wrap(aCx, this);
1.663 +}
1.664 +
1.665 +/* static */already_AddRefed<DOMException>
1.666 +DOMException::Create(nsresult aRv)
1.667 +{
1.668 + nsCString name;
1.669 + nsCString message;
1.670 + uint16_t code;
1.671 + NSResultToNameAndMessage(aRv, name, message, &code);
1.672 + nsRefPtr<DOMException> inst =
1.673 + new DOMException(aRv, message, name, code);
1.674 + return inst.forget();
1.675 +}
1.676 +
1.677 +} // namespace dom
1.678 +} // namespace mozilla
