gecko-dev/dom/base/DOMException.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/dom/DOMException.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/dom/Exceptions.h"
#include "nsContentUtils.h"
#include "nsCOMPtr.h"
#include "mozilla/dom/Document.h"
#include "nsIException.h"
#include "nsMemory.h"
#include "xpcprivate.h"
#include "mozilla/dom/DOMExceptionBinding.h"
#include "mozilla/ErrorResult.h"
using namespace mozilla;
using namespace mozilla::dom;
enum DOM4ErrorTypeCodeMap {
/* DOM4 errors from
http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#domexception */
IndexSizeError = DOMException_Binding::INDEX_SIZE_ERR,
HierarchyRequestError = DOMException_Binding::HIERARCHY_REQUEST_ERR,
WrongDocumentError = DOMException_Binding::WRONG_DOCUMENT_ERR,
InvalidCharacterError = DOMException_Binding::INVALID_CHARACTER_ERR,
NoModificationAllowedError =
DOMException_Binding::NO_MODIFICATION_ALLOWED_ERR,
NotFoundError = DOMException_Binding::NOT_FOUND_ERR,
NotSupportedError = DOMException_Binding::NOT_SUPPORTED_ERR,
// Can't remove until setNamedItem is removed
InUseAttributeError = DOMException_Binding::INUSE_ATTRIBUTE_ERR,
InvalidStateError = DOMException_Binding::INVALID_STATE_ERR,
SyntaxError = DOMException_Binding::SYNTAX_ERR,
InvalidModificationError = DOMException_Binding::INVALID_MODIFICATION_ERR,
NamespaceError = DOMException_Binding::NAMESPACE_ERR,
InvalidAccessError = DOMException_Binding::INVALID_ACCESS_ERR,
TypeMismatchError = DOMException_Binding::TYPE_MISMATCH_ERR,
SecurityError = DOMException_Binding::SECURITY_ERR,
NetworkError = DOMException_Binding::NETWORK_ERR,
AbortError = DOMException_Binding::ABORT_ERR,
URLMismatchError = DOMException_Binding::URL_MISMATCH_ERR,
QuotaExceededError = DOMException_Binding::QUOTA_EXCEEDED_ERR,
TimeoutError = DOMException_Binding::TIMEOUT_ERR,
InvalidNodeTypeError = DOMException_Binding::INVALID_NODE_TYPE_ERR,
DataCloneError = DOMException_Binding::DATA_CLONE_ERR,
InvalidPointerId = 0,
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 */
FileHandleInactiveError = 0,
/* WebCrypto errors
https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#dfn-DataError
*/
OperationError = 0,
/* Push API errors */
NotAllowedError = 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 constexpr struct ResultStruct {
nsresult mNSResult;
uint16_t mCode;
const char* mName;
const char* mMessage;
} sDOMErrorMsgMap[] = {
#include "domerr.msg"
};
#undef DOM4_MSG_DEF
#undef DOM_MSG_DEF
static void NSResultToNameAndMessage(nsresult aNSResult, nsCString& aName,
nsCString& aMessage, uint16_t* aCode) {
aName.Truncate();
aMessage.Truncate();
*aCode = 0;
for (uint32_t idx = 0; idx < ArrayLength(sDOMErrorMsgMap); idx++) {
if (aNSResult == sDOMErrorMsgMap[idx].mNSResult) {
aName.Rebind(sDOMErrorMsgMap[idx].mName,
strlen(sDOMErrorMsgMap[idx].mName));
aMessage.Rebind(sDOMErrorMsgMap[idx].mMessage,
strlen(sDOMErrorMsgMap[idx].mMessage));
*aCode = sDOMErrorMsgMap[idx].mCode;
return;
}
}
NS_WARNING("Huh, someone is throwing non-DOM errors using the DOM module!");
}
nsresult NS_GetNameAndMessageForDOMNSResult(nsresult aNSResult,
nsACString& aName,
nsACString& aMessage,
uint16_t* aCode) {
nsCString name;
nsCString message;
uint16_t code = 0;
NSResultToNameAndMessage(aNSResult, name, message, &code);
if (!name.IsEmpty() && !message.IsEmpty()) {
aName = name;
aMessage = message;
if (aCode) {
*aCode = code;
}
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
namespace mozilla {
namespace dom {
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Exception)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(Exception)
NS_INTERFACE_MAP_ENTRY(nsIException)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(Exception)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Exception)
NS_IMPL_CYCLE_COLLECTION_CLASS(Exception)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Exception)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocation)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mData)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Exception)
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mThrownJSVal)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Exception)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocation)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mData)
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
tmp->mThrownJSVal.setNull();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
Exception::Exception(const nsACString& aMessage, nsresult aResult,
const nsACString& aName, nsIStackFrame* aLocation,
nsISupports* aData)
: mMessage(aMessage),
mResult(aResult),
mName(aName),
mData(aData),
mHoldingJSVal(false) {
if (aLocation) {
mLocation = aLocation;
} else {
mLocation = GetCurrentJSStack();
// it is legal for there to be no active JS stack, if C++ code
// is operating on a JS-implemented interface pointer without
// having been called in turn by JS. This happens in the JS
// component loader.
}
}
Exception::~Exception() {
if (mHoldingJSVal) {
MOZ_ASSERT(NS_IsMainThread());
mozilla::DropJSObjects(this);
}
}
bool Exception::StealJSVal(JS::Value* aVp) {
MOZ_ASSERT(NS_IsMainThread());
if (mHoldingJSVal) {
*aVp = mThrownJSVal;
mThrownJSVal.setNull();
mozilla::DropJSObjects(this);
mHoldingJSVal = false;
return true;
}
return false;
}
void Exception::StowJSVal(JS::Value& aVp) {
MOZ_ASSERT(NS_IsMainThread());
mThrownJSVal = aVp;
if (!mHoldingJSVal) {
mozilla::HoldJSObjects(this);
mHoldingJSVal = true;
}
}
void Exception::GetName(nsAString& aName) {
if (!mName.IsEmpty()) {
CopyUTF8toUTF16(mName, aName);
} else {
aName.Truncate();
const char* name = nullptr;
nsXPCException::NameAndFormatForNSResult(mResult, &name, nullptr);
if (name) {
Bug 1402247 - Use encoding_rs for XPCOM string encoding conversions. r=Nika,erahm,froydnj. Correctness improvements: * UTF errors are handled safely per spec instead of dangerously truncating strings. * There are fewer converter implementations. Performance improvements: * The old code did exact buffer length math, which meant doing UTF math twice on each input string (once for length calculation and another time for conversion). Exact length math is more complicated when handling errors properly, which the old code didn't do. The new code does UTF math on the string content only once (when converting) but risks allocating more than once. There are heuristics in place to lower the probability of reallocation in cases where the double math avoidance isn't enough of a saving to absorb an allocation and memcpy. * Previously, in UTF-16 <-> UTF-8 conversions, an ASCII prefix was optimized but a single non-ASCII code point pessimized the rest of the string. The new code tries to get back on the fast ASCII path. * UTF-16 to Latin1 conversion guarantees less about handling of out-of-range input to eliminate an operation from the inner loop on x86/x86_64. * When assigning to a pre-existing string, the new code tries to reuse the old buffer instead of first releasing the old buffer and then allocating a new one. * When reallocating from the new code, the memcpy covers only the data that is part of the logical length of the old string instead of memcpying the whole capacity. (For old callers old excess memcpy behavior is preserved due to bogus callers. See bug 1472113.) * UTF-8 strings in XPConnect that are in the Latin1 range are passed to SpiderMonkey as Latin1. New features: * Conversion between UTF-8 and Latin1 is added in order to enable faster future interop between Rust code (or otherwise UTF-8-using code) and text node and SpiderMonkey code that uses Latin1. MozReview-Commit-ID: JaJuExfILM9
2018-07-06 10:44:43 +03:00
CopyUTF8toUTF16(mozilla::MakeStringSpan(name), aName);
}
}
}
void Exception::GetFilename(JSContext* aCx, nsAString& aFilename) {
if (mLocation) {
mLocation->GetFilename(aCx, aFilename);
return;
}
aFilename.Truncate();
}
void Exception::ToString(JSContext* aCx, nsACString& _retval) {
static const char defaultMsg[] = "<no message>";
static const char defaultLocation[] = "<unknown>";
static const char format[] = "[Exception... \"%s\" nsresult: \"0x%" PRIx32
" (%s)\" location: \"%s\" data: %s]";
nsCString location;
if (mLocation) {
// we need to free this if it does not fail
mLocation->ToString(aCx, location);
}
if (location.IsEmpty()) {
location.Assign(defaultLocation);
}
const char* msg = mMessage.IsEmpty() ? nullptr : mMessage.get();
const char* resultName = mName.IsEmpty() ? nullptr : mName.get();
if (!resultName && !nsXPCException::NameAndFormatForNSResult(
mResult, &resultName, (!msg) ? &msg : nullptr)) {
if (!msg) {
msg = defaultMsg;
}
resultName = "<unknown>";
}
const char* data = mData ? "yes" : "no";
_retval.Truncate();
_retval.AppendPrintf(format, msg, static_cast<uint32_t>(mResult), resultName,
location.get(), data);
}
Bug 1117172 part 3. Change the wrappercached WrapObject methods to allow passing in aGivenProto. r=peterv The only manual changes here are to BindingUtils.h, BindingUtils.cpp, Codegen.py, Element.cpp, IDBFileRequest.cpp, IDBObjectStore.cpp, dom/workers/Navigator.cpp, WorkerPrivate.cpp, DeviceStorageRequestChild.cpp, Notification.cpp, nsGlobalWindow.cpp, MessagePort.cpp, nsJSEnvironment.cpp, Sandbox.cpp, XPCConvert.cpp, ExportHelpers.cpp, and DataStoreService.cpp. The rest of this diff was generated by running the following commands: find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObject\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(Binding(?:_workers)?::Wrap\((?:aCx|cx|aContext|aCtx|js), [^,)]+)\)/\1, aGivenProto)/g'
2015-03-19 17:13:33 +03:00
JSObject* Exception::WrapObject(JSContext* cx,
JS::Handle<JSObject*> aGivenProto) {
return Exception_Binding::Wrap(cx, this, aGivenProto);
}
void Exception::GetMessageMoz(nsString& retval) {
CopyUTF8toUTF16(mMessage, retval);
}
uint32_t Exception::Result() const { return (uint32_t)mResult; }
uint32_t Exception::SourceId(JSContext* aCx) const {
if (mLocation) {
return mLocation->GetSourceId(aCx);
}
return 0;
}
uint32_t Exception::LineNumber(JSContext* aCx) const {
if (mLocation) {
return mLocation->GetLineNumber(aCx);
}
return 0;
}
uint32_t Exception::ColumnNumber() const { return 0; }
already_AddRefed<nsIStackFrame> Exception::GetLocation() const {
nsCOMPtr<nsIStackFrame> location = mLocation;
return location.forget();
}
nsISupports* Exception::GetData() const { return mData; }
void Exception::GetStack(JSContext* aCx, nsAString& aStack) const {
if (mLocation) {
mLocation->GetFormattedStack(aCx, aStack);
}
}
void Exception::Stringify(JSContext* aCx, nsString& retval) {
nsCString str;
ToString(aCx, str);
CopyUTF8toUTF16(str, retval);
}
DOMException::DOMException(nsresult aRv, const nsACString& aMessage,
const nsACString& aName, uint16_t aCode)
: Exception(aMessage, aRv, aName, nullptr, nullptr), mCode(aCode) {}
void DOMException::ToString(JSContext* aCx, nsACString& aReturn) {
aReturn.Truncate();
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%" PRIx32
" (%s)\" location: \"%s\"]";
nsAutoCString location;
if (location.IsEmpty()) {
location = defaultLocation;
}
const char* msg = !mMessage.IsEmpty() ? mMessage.get() : defaultMsg;
const char* resultName = !mName.IsEmpty() ? mName.get() : defaultName;
aReturn.AppendPrintf(format, msg, mCode, static_cast<uint32_t>(mResult),
resultName, location.get());
}
void DOMException::GetName(nsString& retval) { CopyUTF8toUTF16(mName, retval); }
already_AddRefed<DOMException> DOMException::Constructor(
GlobalObject& /* unused */, const nsAString& aMessage,
const Optional<nsAString>& aName, ErrorResult& aError) {
nsresult exceptionResult = NS_OK;
uint16_t exceptionCode = 0;
nsCString name(NS_LITERAL_CSTRING("Error"));
if (aName.WasPassed()) {
CopyUTF16toUTF8(aName.Value(), name);
for (uint32_t idx = 0; idx < ArrayLength(sDOMErrorMsgMap); idx++) {
if (name.EqualsASCII(sDOMErrorMsgMap[idx].mName)) {
exceptionResult = sDOMErrorMsgMap[idx].mNSResult;
exceptionCode = sDOMErrorMsgMap[idx].mCode;
break;
}
}
}
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<DOMException> retval = new DOMException(
exceptionResult, NS_ConvertUTF16toUTF8(aMessage), name, exceptionCode);
return retval.forget();
}
Bug 1117172 part 3. Change the wrappercached WrapObject methods to allow passing in aGivenProto. r=peterv The only manual changes here are to BindingUtils.h, BindingUtils.cpp, Codegen.py, Element.cpp, IDBFileRequest.cpp, IDBObjectStore.cpp, dom/workers/Navigator.cpp, WorkerPrivate.cpp, DeviceStorageRequestChild.cpp, Notification.cpp, nsGlobalWindow.cpp, MessagePort.cpp, nsJSEnvironment.cpp, Sandbox.cpp, XPCConvert.cpp, ExportHelpers.cpp, and DataStoreService.cpp. The rest of this diff was generated by running the following commands: find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObject\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g' find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(Binding(?:_workers)?::Wrap\((?:aCx|cx|aContext|aCtx|js), [^,)]+)\)/\1, aGivenProto)/g'
2015-03-19 17:13:33 +03:00
JSObject* DOMException::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return DOMException_Binding::Wrap(aCx, this, aGivenProto);
}
/* static */
already_AddRefed<DOMException> DOMException::Create(nsresult aRv) {
nsCString name;
nsCString message;
uint16_t code;
NSResultToNameAndMessage(aRv, name, message, &code);
RefPtr<DOMException> inst = new DOMException(aRv, message, name, code);
return inst.forget();
}
/* static */
already_AddRefed<DOMException> DOMException::Create(
nsresult aRv, const nsACString& aMessage) {
nsCString name;
nsCString message;
uint16_t code;
NSResultToNameAndMessage(aRv, name, message, &code);
RefPtr<DOMException> inst = new DOMException(aRv, aMessage, name, code);
return inst.forget();
}
} // namespace dom
} // namespace mozilla