mirror of
https://github.com/mozilla/gecko-dev.git
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a10a5b4139
MozReview-Commit-ID: 4BaYjfOdrUc
623 lines
16 KiB
C++
623 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/DOMException.h"
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#include "jsprf.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/HoldDropJSObjects.h"
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#include "mozilla/dom/Exceptions.h"
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#include "nsContentUtils.h"
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#include "nsCOMPtr.h"
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#include "nsIDocument.h"
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#include "nsIDOMDOMException.h"
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#include "nsIException.h"
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#include "nsMemory.h"
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#include "xpcprivate.h"
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#include "mozilla/dom/DOMExceptionBinding.h"
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#include "mozilla/ErrorResult.h"
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using namespace mozilla;
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enum DOM4ErrorTypeCodeMap {
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/* DOM4 errors from http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#domexception */
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IndexSizeError = nsIDOMDOMException::INDEX_SIZE_ERR,
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HierarchyRequestError = nsIDOMDOMException::HIERARCHY_REQUEST_ERR,
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WrongDocumentError = nsIDOMDOMException::WRONG_DOCUMENT_ERR,
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InvalidCharacterError = nsIDOMDOMException::INVALID_CHARACTER_ERR,
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NoModificationAllowedError = nsIDOMDOMException::NO_MODIFICATION_ALLOWED_ERR,
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NotFoundError = nsIDOMDOMException::NOT_FOUND_ERR,
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NotSupportedError = nsIDOMDOMException::NOT_SUPPORTED_ERR,
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// Can't remove until setNamedItem is removed
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InUseAttributeError = nsIDOMDOMException::INUSE_ATTRIBUTE_ERR,
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InvalidStateError = nsIDOMDOMException::INVALID_STATE_ERR,
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SyntaxError = nsIDOMDOMException::SYNTAX_ERR,
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InvalidModificationError = nsIDOMDOMException::INVALID_MODIFICATION_ERR,
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NamespaceError = nsIDOMDOMException::NAMESPACE_ERR,
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InvalidAccessError = nsIDOMDOMException::INVALID_ACCESS_ERR,
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TypeMismatchError = nsIDOMDOMException::TYPE_MISMATCH_ERR,
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SecurityError = nsIDOMDOMException::SECURITY_ERR,
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NetworkError = nsIDOMDOMException::NETWORK_ERR,
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AbortError = nsIDOMDOMException::ABORT_ERR,
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URLMismatchError = nsIDOMDOMException::URL_MISMATCH_ERR,
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QuotaExceededError = nsIDOMDOMException::QUOTA_EXCEEDED_ERR,
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TimeoutError = nsIDOMDOMException::TIMEOUT_ERR,
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InvalidNodeTypeError = nsIDOMDOMException::INVALID_NODE_TYPE_ERR,
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DataCloneError = nsIDOMDOMException::DATA_CLONE_ERR,
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InvalidPointerId = nsIDOMDOMException::INVALID_POINTER_ERR,
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EncodingError = 0,
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/* XXX Should be JavaScript native errors */
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TypeError = 0,
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RangeError = 0,
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/* IndexedDB errors http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#exceptions */
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UnknownError = 0,
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ConstraintError = 0,
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DataError = 0,
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TransactionInactiveError = 0,
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ReadOnlyError = 0,
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VersionError = 0,
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/* File API errors http://dev.w3.org/2006/webapi/FileAPI/#ErrorAndException */
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NotReadableError = 0,
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/* FileHandle API errors */
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FileHandleInactiveError = 0,
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/* WebCrypto errors https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#dfn-DataError */
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OperationError = 0,
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/* Push API errors */
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NotAllowedError = 0,
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};
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#define DOM4_MSG_DEF(name, message, nsresult) {(nsresult), name, #name, message},
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#define DOM_MSG_DEF(val, message) {(val), NS_ERROR_GET_CODE(val), #val, message},
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static constexpr struct ResultStruct
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{
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nsresult mNSResult;
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uint16_t mCode;
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const char* mName;
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const char* mMessage;
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} sDOMErrorMsgMap[] = {
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#include "domerr.msg"
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};
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#undef DOM4_MSG_DEF
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#undef DOM_MSG_DEF
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static void
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NSResultToNameAndMessage(nsresult aNSResult,
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nsCString& aName,
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nsCString& aMessage,
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uint16_t* aCode)
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{
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aName.Truncate();
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aMessage.Truncate();
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*aCode = 0;
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for (uint32_t idx = 0; idx < ArrayLength(sDOMErrorMsgMap); idx++) {
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if (aNSResult == sDOMErrorMsgMap[idx].mNSResult) {
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aName.Rebind(sDOMErrorMsgMap[idx].mName,
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strlen(sDOMErrorMsgMap[idx].mName));
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aMessage.Rebind(sDOMErrorMsgMap[idx].mMessage,
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strlen(sDOMErrorMsgMap[idx].mMessage));
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*aCode = sDOMErrorMsgMap[idx].mCode;
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return;
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}
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}
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NS_WARNING("Huh, someone is throwing non-DOM errors using the DOM module!");
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}
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nsresult
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NS_GetNameAndMessageForDOMNSResult(nsresult aNSResult, nsACString& aName,
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nsACString& aMessage, uint16_t* aCode)
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{
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nsCString name;
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nsCString message;
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uint16_t code = 0;
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NSResultToNameAndMessage(aNSResult, name, message, &code);
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if (!name.IsEmpty() && !message.IsEmpty()) {
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aName = name;
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aMessage = message;
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if (aCode) {
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*aCode = code;
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}
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return NS_OK;
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}
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return NS_ERROR_NOT_AVAILABLE;
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}
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namespace mozilla {
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namespace dom {
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Exception)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(Exception)
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NS_INTERFACE_MAP_ENTRY(nsIException)
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NS_INTERFACE_MAP_ENTRY(nsIXPCException)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIException)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(Exception)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(Exception)
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NS_IMPL_CYCLE_COLLECTION_CLASS(Exception)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Exception)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocation)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mData)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Exception)
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mThrownJSVal)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Exception)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocation)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mData)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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tmp->mThrownJSVal.setNull();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CI_INTERFACE_GETTER(Exception, nsIXPCException)
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Exception::Exception(const nsACString& aMessage,
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nsresult aResult,
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const nsACString& aName,
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nsIStackFrame *aLocation,
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nsISupports *aData)
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: mResult(NS_OK),
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mInitialized(false),
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mHoldingJSVal(false)
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{
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Initialize(aMessage, aResult, aName, aLocation, aData);
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}
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Exception::Exception()
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: mResult(NS_OK),
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mInitialized(false),
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mHoldingJSVal(false)
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{
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}
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Exception::~Exception()
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{
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if (mHoldingJSVal) {
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MOZ_ASSERT(NS_IsMainThread());
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mozilla::DropJSObjects(this);
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}
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}
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bool
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Exception::StealJSVal(JS::Value* aVp)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (mHoldingJSVal) {
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*aVp = mThrownJSVal;
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mThrownJSVal.setNull();
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mozilla::DropJSObjects(this);
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mHoldingJSVal = false;
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return true;
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}
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return false;
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}
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void
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Exception::StowJSVal(JS::Value& aVp)
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{
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MOZ_ASSERT(NS_IsMainThread());
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mThrownJSVal = aVp;
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if (!mHoldingJSVal) {
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mozilla::HoldJSObjects(this);
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mHoldingJSVal = true;
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}
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}
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NS_IMETHODIMP
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Exception::GetMessageMoz(nsACString& aMessage)
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{
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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aMessage.Assign(mMessage);
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetResult(nsresult* aResult)
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{
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NS_ENSURE_ARG_POINTER(aResult);
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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*aResult = mResult;
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetName(nsACString& aName)
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{
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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if (!mName.IsEmpty()) {
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aName.Assign(mName);
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} else {
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aName.Truncate();
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const char* name = nullptr;
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nsXPCException::NameAndFormatForNSResult(mResult, &name, nullptr);
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if (name) {
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aName.Assign(name);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetFilename(JSContext* aCx, nsAString& aFilename)
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{
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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if (mLocation) {
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return mLocation->GetFilename(aCx, aFilename);
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}
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aFilename.Truncate();
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetLineNumber(JSContext* aCx, uint32_t *aLineNumber)
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{
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NS_ENSURE_ARG_POINTER(aLineNumber);
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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if (mLocation) {
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int32_t lineno;
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nsresult rv = mLocation->GetLineNumber(aCx, &lineno);
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*aLineNumber = lineno;
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return rv;
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}
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*aLineNumber = 0;
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetColumnNumber(uint32_t* aColumnNumber)
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{
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NS_ENSURE_ARG_POINTER(aColumnNumber);
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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*aColumnNumber = 0;
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetLocation(nsIStackFrame** aLocation)
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{
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NS_ENSURE_ARG_POINTER(aLocation);
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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nsCOMPtr<nsIStackFrame> location = mLocation;
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location.forget(aLocation);
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::GetData(nsISupports** aData)
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{
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NS_ENSURE_ARG_POINTER(aData);
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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nsCOMPtr<nsISupports> data = mData;
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data.forget(aData);
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::ToString(JSContext* aCx, nsACString& _retval)
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{
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NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
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static const char defaultMsg[] = "<no message>";
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static const char defaultLocation[] = "<unknown>";
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static const char format[] =
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"[Exception... \"%s\" nsresult: \"0x%" PRIx32 " (%s)\" location: \"%s\" data: %s]";
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nsCString location;
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if (mLocation) {
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// we need to free this if it does not fail
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nsresult rv = mLocation->ToString(aCx, location);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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if (location.IsEmpty()) {
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location.Assign(defaultLocation);
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}
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const char* msg = mMessage.IsEmpty() ? nullptr : mMessage.get();
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const char* resultName = mName.IsEmpty() ? nullptr: mName.get();
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if (!resultName &&
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!nsXPCException::NameAndFormatForNSResult(mResult, &resultName,
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(!msg) ? &msg : nullptr)) {
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if (!msg) {
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msg = defaultMsg;
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}
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resultName = "<unknown>";
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}
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const char* data = mData ? "yes" : "no";
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_retval.Truncate();
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_retval.AppendPrintf(format, msg, static_cast<uint32_t>(mResult), resultName,
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location.get(), data);
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return NS_OK;
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}
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NS_IMETHODIMP
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Exception::Initialize(const nsACString& aMessage, nsresult aResult,
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const nsACString& aName, nsIStackFrame *aLocation,
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nsISupports *aData)
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{
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NS_ENSURE_FALSE(mInitialized, NS_ERROR_ALREADY_INITIALIZED);
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mMessage = aMessage;
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mName = aName;
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mResult = aResult;
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if (aLocation) {
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mLocation = aLocation;
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} else {
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mLocation = GetCurrentJSStack();
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// it is legal for there to be no active JS stack, if C++ code
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// is operating on a JS-implemented interface pointer without
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// having been called in turn by JS. This happens in the JS
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// component loader.
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}
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mData = aData;
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mInitialized = true;
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return NS_OK;
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}
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JSObject*
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Exception::WrapObject(JSContext* cx, JS::Handle<JSObject*> aGivenProto)
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{
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return ExceptionBinding::Wrap(cx, this, aGivenProto);
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}
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void
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Exception::GetMessageMoz(nsString& retval)
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{
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nsCString str;
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#ifdef DEBUG
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DebugOnly<nsresult> rv =
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#endif
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GetMessageMoz(str);
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MOZ_ASSERT(NS_SUCCEEDED(rv));
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CopyUTF8toUTF16(str, retval);
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}
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uint32_t
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Exception::Result() const
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{
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return (uint32_t)mResult;
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}
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void
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Exception::GetName(nsString& retval)
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{
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nsCString str;
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#ifdef DEBUG
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DebugOnly<nsresult> rv =
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#endif
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GetName(str);
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MOZ_ASSERT(NS_SUCCEEDED(rv));
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CopyUTF8toUTF16(str, retval);
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}
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uint32_t
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Exception::LineNumber(JSContext* aCx) const
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{
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if (mLocation) {
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int32_t lineno;
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if (NS_SUCCEEDED(mLocation->GetLineNumber(aCx, &lineno))) {
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return lineno;
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}
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return 0;
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}
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return 0;
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}
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uint32_t
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Exception::ColumnNumber() const
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{
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return 0;
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}
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already_AddRefed<nsIStackFrame>
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Exception::GetLocation() const
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{
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nsCOMPtr<nsIStackFrame> location = mLocation;
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return location.forget();
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}
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already_AddRefed<nsISupports>
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Exception::GetData() const
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{
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nsCOMPtr<nsISupports> data = mData;
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return data.forget();
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}
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void
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Exception::GetStack(JSContext* aCx, nsAString& aStack, ErrorResult& aRv) const
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{
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if (mLocation) {
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aRv = mLocation->GetFormattedStack(aCx, aStack);
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}
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}
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void
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Exception::Stringify(JSContext* aCx, nsString& retval)
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{
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nsCString str;
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#ifdef DEBUG
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DebugOnly<nsresult> rv =
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#endif
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ToString(aCx, str);
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MOZ_ASSERT(NS_SUCCEEDED(rv));
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CopyUTF8toUTF16(str, retval);
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}
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NS_IMPL_ADDREF_INHERITED(DOMException, Exception)
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NS_IMPL_RELEASE_INHERITED(DOMException, Exception)
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NS_INTERFACE_MAP_BEGIN(DOMException)
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NS_INTERFACE_MAP_ENTRY(nsIDOMDOMException)
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NS_INTERFACE_MAP_END_INHERITING(Exception)
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DOMException::DOMException(nsresult aRv, const nsACString& aMessage,
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const nsACString& aName, uint16_t aCode)
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: Exception(EmptyCString(), aRv, EmptyCString(), nullptr, nullptr),
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mName(aName),
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mMessage(aMessage),
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mCode(aCode)
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{
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}
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NS_IMETHODIMP
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DOMException::GetCode(uint16_t* aCode)
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{
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NS_ENSURE_ARG_POINTER(aCode);
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*aCode = mCode;
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// Warn only when the code was changed (other than DOM Core)
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// or the code is useless (zero)
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if (NS_ERROR_GET_MODULE(mResult) != NS_ERROR_MODULE_DOM || !mCode) {
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nsCOMPtr<nsIDocument> doc = nsContentUtils::GetDocumentFromCaller();
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if (doc) {
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doc->WarnOnceAbout(nsIDocument::eDOMExceptionCode);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
|
|
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());
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
DOMException::GetName(nsString& retval)
|
|
{
|
|
CopyUTF8toUTF16(mName, retval);
|
|
}
|
|
|
|
void
|
|
DOMException::GetMessageMoz(nsString& retval)
|
|
{
|
|
CopyUTF8toUTF16(mMessage, 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
RefPtr<DOMException> retval =
|
|
new DOMException(exceptionResult,
|
|
NS_ConvertUTF16toUTF8(aMessage),
|
|
name,
|
|
exceptionCode);
|
|
return retval.forget();
|
|
}
|
|
|
|
JSObject*
|
|
DOMException::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return DOMExceptionBinding::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
|