michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/DOMException.h"
michael@0: 
michael@0: #include "jsprf.h"
michael@0: #include "js/OldDebugAPI.h"
michael@0: #include "mozilla/ArrayUtils.h"
michael@0: #include "mozilla/HoldDropJSObjects.h"
michael@0: #include "mozilla/dom/Exceptions.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsIClassInfoImpl.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "nsIDOMDOMException.h"
michael@0: #include "nsIException.h"
michael@0: #include "nsIProgrammingLanguage.h"
michael@0: #include "nsMemory.h"
michael@0: #include "prprf.h"
michael@0: #include "xpcprivate.h"
michael@0: 
michael@0: #include "mozilla/dom/DOMExceptionBinding.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: enum DOM4ErrorTypeCodeMap {
michael@0:   /* DOM4 errors from http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#domexception */
michael@0:   IndexSizeError             = nsIDOMDOMException::INDEX_SIZE_ERR,
michael@0:   HierarchyRequestError      = nsIDOMDOMException::HIERARCHY_REQUEST_ERR,
michael@0:   WrongDocumentError         = nsIDOMDOMException::WRONG_DOCUMENT_ERR,
michael@0:   InvalidCharacterError      = nsIDOMDOMException::INVALID_CHARACTER_ERR,
michael@0:   NoModificationAllowedError = nsIDOMDOMException::NO_MODIFICATION_ALLOWED_ERR,
michael@0:   NotFoundError              = nsIDOMDOMException::NOT_FOUND_ERR,
michael@0:   NotSupportedError          = nsIDOMDOMException::NOT_SUPPORTED_ERR,
michael@0:   // Can't remove until setNamedItem is removed
michael@0:   InUseAttributeError        = nsIDOMDOMException::INUSE_ATTRIBUTE_ERR,
michael@0:   InvalidStateError          = nsIDOMDOMException::INVALID_STATE_ERR,
michael@0:   SyntaxError                = nsIDOMDOMException::SYNTAX_ERR,
michael@0:   InvalidModificationError   = nsIDOMDOMException::INVALID_MODIFICATION_ERR,
michael@0:   NamespaceError             = nsIDOMDOMException::NAMESPACE_ERR,
michael@0:   InvalidAccessError         = nsIDOMDOMException::INVALID_ACCESS_ERR,
michael@0:   TypeMismatchError          = nsIDOMDOMException::TYPE_MISMATCH_ERR,
michael@0:   SecurityError              = nsIDOMDOMException::SECURITY_ERR,
michael@0:   NetworkError               = nsIDOMDOMException::NETWORK_ERR,
michael@0:   AbortError                 = nsIDOMDOMException::ABORT_ERR,
michael@0:   URLMismatchError           = nsIDOMDOMException::URL_MISMATCH_ERR,
michael@0:   QuotaExceededError         = nsIDOMDOMException::QUOTA_EXCEEDED_ERR,
michael@0:   TimeoutError               = nsIDOMDOMException::TIMEOUT_ERR,
michael@0:   InvalidNodeTypeError       = nsIDOMDOMException::INVALID_NODE_TYPE_ERR,
michael@0:   DataCloneError             = nsIDOMDOMException::DATA_CLONE_ERR,
michael@0:   InvalidPointerId           = nsIDOMDOMException::INVALID_POINTER_ERR,
michael@0:   EncodingError              = 0,
michael@0: 
michael@0:   /* XXX Should be JavaScript native errors */
michael@0:   TypeError                  = 0,
michael@0:   RangeError                 = 0,
michael@0: 
michael@0:   /* IndexedDB errors http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#exceptions */
michael@0:   UnknownError             = 0,
michael@0:   ConstraintError          = 0,
michael@0:   DataError                = 0,
michael@0:   TransactionInactiveError = 0,
michael@0:   ReadOnlyError            = 0,
michael@0:   VersionError             = 0,
michael@0: 
michael@0:   /* File API errors http://dev.w3.org/2006/webapi/FileAPI/#ErrorAndException */
michael@0:   NotReadableError         = 0,
michael@0: 
michael@0:   /* FileHandle API errors */
michael@0:   LockedFileInactiveError = 0,
michael@0: };
michael@0: 
michael@0: #define DOM4_MSG_DEF(name, message, nsresult) {(nsresult), name, #name, message},
michael@0: #define DOM_MSG_DEF(val, message) {(val), NS_ERROR_GET_CODE(val), #val, message},
michael@0: 
michael@0: static const struct ResultStruct
michael@0: {
michael@0:   nsresult mNSResult;
michael@0:   uint16_t mCode;
michael@0:   const char* mName;
michael@0:   const char* mMessage;
michael@0: } sDOMErrorMsgMap[] = {
michael@0: #include "domerr.msg"
michael@0: };
michael@0: 
michael@0: #undef DOM4_MSG_DEF
michael@0: #undef DOM_MSG_DEF
michael@0: 
michael@0: static void
michael@0: NSResultToNameAndMessage(nsresult aNSResult,
michael@0:                          nsCString& aName,
michael@0:                          nsCString& aMessage,
michael@0:                          uint16_t* aCode)
michael@0: {
michael@0:   aName.Truncate();
michael@0:   aMessage.Truncate();
michael@0:   *aCode = 0;
michael@0:   for (uint32_t idx = 0; idx < ArrayLength(sDOMErrorMsgMap); idx++) {
michael@0:     if (aNSResult == sDOMErrorMsgMap[idx].mNSResult) {
michael@0:       aName.Rebind(sDOMErrorMsgMap[idx].mName,
michael@0:                    strlen(sDOMErrorMsgMap[idx].mName));
michael@0:       aMessage.Rebind(sDOMErrorMsgMap[idx].mMessage,
michael@0:                    strlen(sDOMErrorMsgMap[idx].mMessage));
michael@0:       *aCode = sDOMErrorMsgMap[idx].mCode;
michael@0:       return;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   NS_WARNING("Huh, someone is throwing non-DOM errors using the DOM module!");
michael@0: 
michael@0:   return;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: NS_GetNameAndMessageForDOMNSResult(nsresult aNSResult, nsACString& aName,
michael@0:                                    nsACString& aMessage, uint16_t* aCode)
michael@0: {
michael@0:   nsCString name;
michael@0:   nsCString message;
michael@0:   uint16_t code = 0;
michael@0:   NSResultToNameAndMessage(aNSResult, name, message, &code);
michael@0: 
michael@0:   if (!name.IsEmpty() && !message.IsEmpty()) {
michael@0:     aName = name;
michael@0:     aMessage = message;
michael@0:     if (aCode) {
michael@0:       *aCode = code;
michael@0:     }
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   return NS_ERROR_NOT_AVAILABLE;
michael@0: }
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: bool Exception::sEverMadeOneFromFactory = false;
michael@0: 
michael@0: NS_IMPL_CLASSINFO(Exception, nullptr, nsIClassInfo::DOM_OBJECT,
michael@0:                   NS_XPCEXCEPTION_CID)
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Exception)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIException)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIXPCException)
michael@0:   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIException)
michael@0:   NS_IMPL_QUERY_CLASSINFO(Exception)
michael@0: NS_INTERFACE_MAP_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTING_ADDREF(Exception)
michael@0: NS_IMPL_CYCLE_COLLECTING_RELEASE(Exception)
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_CLASS(Exception)
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Exception)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocation)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInner)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
michael@0: NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Exception)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mThrownJSVal);
michael@0: NS_IMPL_CYCLE_COLLECTION_TRACE_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Exception)
michael@0:   NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocation)
michael@0:   NS_IMPL_CYCLE_COLLECTION_UNLINK(mInner)
michael@0:   NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
michael@0:   tmp->mThrownJSVal.setNull();
michael@0: NS_IMPL_CYCLE_COLLECTION_UNLINK_END
michael@0: 
michael@0: NS_IMPL_CI_INTERFACE_GETTER(Exception, nsIXPCException)
michael@0: 
michael@0: Exception::Exception(const nsACString& aMessage,
michael@0:                      nsresult aResult,
michael@0:                      const nsACString& aName,
michael@0:                      nsIStackFrame *aLocation,
michael@0:                      nsISupports *aData)
michael@0: : mResult(NS_OK),
michael@0:   mLineNumber(0),
michael@0:   mInitialized(false),
michael@0:   mHoldingJSVal(false)
michael@0: {
michael@0:   SetIsDOMBinding();
michael@0: 
michael@0:   // A little hack... The nsIGenericModule nsIClassInfo scheme relies on there
michael@0:   // having been at least one instance made via the factory. Otherwise, the
michael@0:   // shared factory/classinsance object never gets created and our QI getter
michael@0:   // for our instance's pointer to our nsIClassInfo will always return null.
michael@0:   // This is bad because it means that wrapped exceptions will never have a
michael@0:   // shared prototype. So... We force one to be created via the factory
michael@0:   // *once* and then go about our business.
michael@0:   if (!sEverMadeOneFromFactory) {
michael@0:     nsCOMPtr<nsIXPCException> e =
michael@0:         do_CreateInstance(XPC_EXCEPTION_CONTRACTID);
michael@0:     sEverMadeOneFromFactory = true;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIStackFrame> location;
michael@0:   if (aLocation) {
michael@0:     location = aLocation;
michael@0:   } else {
michael@0:     location = GetCurrentJSStack();
michael@0:     // it is legal for there to be no active JS stack, if C++ code
michael@0:     // is operating on a JS-implemented interface pointer without
michael@0:     // having been called in turn by JS.  This happens in the JS
michael@0:     // component loader, and will become more common as additional
michael@0:     // components are implemented in JS.
michael@0:   }
michael@0:   // We want to trim off any leading native 'dataless' frames
michael@0:   if (location) {
michael@0:     while (1) {
michael@0:       uint32_t language;
michael@0:       int32_t lineNumber;
michael@0:       if (NS_FAILED(location->GetLanguage(&language)) ||
michael@0:           language == nsIProgrammingLanguage::JAVASCRIPT ||
michael@0:           NS_FAILED(location->GetLineNumber(&lineNumber)) ||
michael@0:           lineNumber) {
michael@0:         break;
michael@0:       }
michael@0:       nsCOMPtr<nsIStackFrame> caller;
michael@0:       if (NS_FAILED(location->GetCaller(getter_AddRefs(caller))) || !caller) {
michael@0:         break;
michael@0:       }
michael@0:       location = caller;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   Initialize(aMessage, aResult, aName, location, aData, nullptr);
michael@0: }
michael@0: 
michael@0: Exception::Exception()
michael@0:   : mResult(NS_OK),
michael@0:     mLineNumber(-1),
michael@0:     mInitialized(false),
michael@0:     mHoldingJSVal(false)
michael@0: {
michael@0: }
michael@0: 
michael@0: Exception::~Exception()
michael@0: {
michael@0:   if (mHoldingJSVal) {
michael@0:     MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:     mozilla::DropJSObjects(this);
michael@0:   }
michael@0: }
michael@0: 
michael@0: bool
michael@0: Exception::StealJSVal(JS::Value* aVp)
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:   if (mHoldingJSVal) {
michael@0:     *aVp = mThrownJSVal;
michael@0:     mThrownJSVal.setNull();
michael@0: 
michael@0:     mozilla::DropJSObjects(this);
michael@0:     mHoldingJSVal = false;
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: void
michael@0: Exception::StowJSVal(JS::Value& aVp)
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:   mThrownJSVal = aVp;
michael@0:   if (!mHoldingJSVal) {
michael@0:     mozilla::HoldJSObjects(this);
michael@0:     mHoldingJSVal = true;
michael@0:   }
michael@0: }
michael@0: 
michael@0: /* readonly attribute AUTF8String message; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetMessageMoz(nsACString& aMessage)
michael@0: {
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   aMessage.Assign(mMessage);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute nsresult result; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetResult(nsresult* aResult)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aResult);
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   *aResult = mResult;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute AUTF8String name; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetName(nsACString& aName)
michael@0: {
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   if (!mName.IsEmpty()) {
michael@0:     aName.Assign(mName);
michael@0:   } else {
michael@0:     aName.Truncate();
michael@0: 
michael@0:     const char* name = nullptr;
michael@0:     nsXPCException::NameAndFormatForNSResult(mResult, &name, nullptr);
michael@0: 
michael@0:     if (name) {
michael@0:       aName.Assign(name);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute AString filename; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetFilename(nsAString& aFilename)
michael@0: {
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   if (mLocation) {
michael@0:     return mLocation->GetFilename(aFilename);
michael@0:   }
michael@0: 
michael@0:   aFilename.Assign(mFilename);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute uint32_t lineNumber; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetLineNumber(uint32_t *aLineNumber)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aLineNumber);
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   if (mLocation) {
michael@0:     int32_t lineno;
michael@0:     nsresult rv = mLocation->GetLineNumber(&lineno);
michael@0:     *aLineNumber = lineno;
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   *aLineNumber = mLineNumber;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute uint32_t columnNumber; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetColumnNumber(uint32_t* aColumnNumber)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aColumnNumber);
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   *aColumnNumber = 0;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute nsIStackFrame location; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetLocation(nsIStackFrame** aLocation)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aLocation);
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   nsCOMPtr<nsIStackFrame> location = mLocation;
michael@0:   location.forget(aLocation);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute nsISupports data; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetData(nsISupports** aData)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aData);
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   nsCOMPtr<nsISupports> data = mData;
michael@0:   data.forget(aData);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute nsIException inner; */
michael@0: NS_IMETHODIMP
michael@0: Exception::GetInner(nsIException** aException)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aException);
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   nsCOMPtr<nsIException> inner = mInner;
michael@0:   inner.forget(aException);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* AUTF8String toString (); */
michael@0: NS_IMETHODIMP
michael@0: Exception::ToString(nsACString& _retval)
michael@0: {
michael@0:   NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   static const char defaultMsg[] = "<no message>";
michael@0:   static const char defaultLocation[] = "<unknown>";
michael@0:   static const char format[] =
michael@0: "[Exception... \"%s\"  nsresult: \"0x%x (%s)\"  location: \"%s\"  data: %s]";
michael@0: 
michael@0:   nsCString location;
michael@0: 
michael@0:   if (mLocation) {
michael@0:     // we need to free this if it does not fail
michael@0:     nsresult rv = mLocation->ToString(location);
michael@0:     NS_ENSURE_SUCCESS(rv, rv);
michael@0:   }
michael@0: 
michael@0:   if (location.IsEmpty()) {
michael@0:     location.Assign(defaultLocation);
michael@0:   }
michael@0: 
michael@0:   const char* msg = mMessage.IsEmpty() ? nullptr : mMessage.get();
michael@0: 
michael@0:   const char* resultName = mName.IsEmpty() ? nullptr: mName.get();
michael@0:   if (!resultName &&
michael@0:       !nsXPCException::NameAndFormatForNSResult(mResult, &resultName,
michael@0:                                                 (!msg) ? &msg : nullptr)) {
michael@0:     if (!msg) {
michael@0:       msg = defaultMsg;
michael@0:     }
michael@0:     resultName = "<unknown>";
michael@0:   }
michael@0:   const char* data = mData ? "yes" : "no";
michael@0: 
michael@0:   _retval.Truncate();
michael@0:   _retval.AppendPrintf(format, msg, mResult, resultName,
michael@0:                        location.get(), data);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* void initialize (in AUTF8String aMessage, in nsresult aResult,
michael@0:  *                  in AUTF8String aName, in nsIStackFrame aLocation,
michael@0:  *                  in nsISupports aData, in nsIException aInner); */
michael@0: NS_IMETHODIMP
michael@0: Exception::Initialize(const nsACString& aMessage, nsresult aResult,
michael@0:                       const nsACString& aName, nsIStackFrame *aLocation,
michael@0:                       nsISupports *aData, nsIException *aInner)
michael@0: {
michael@0:   NS_ENSURE_FALSE(mInitialized, NS_ERROR_ALREADY_INITIALIZED);
michael@0: 
michael@0:   mMessage = aMessage;
michael@0:   mName = aName;
michael@0:   mResult = aResult;
michael@0: 
michael@0:   if (aLocation) {
michael@0:     mLocation = aLocation;
michael@0:   } else {
michael@0:     nsresult rv;
michael@0:     nsXPConnect* xpc = nsXPConnect::XPConnect();
michael@0:     rv = xpc->GetCurrentJSStack(getter_AddRefs(mLocation));
michael@0:     if (NS_FAILED(rv)) {
michael@0:       return rv;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   mData = aData;
michael@0:   mInner = aInner;
michael@0: 
michael@0:   mInitialized = true;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: Exception::WrapObject(JSContext* cx)
michael@0: {
michael@0:   return ExceptionBinding::Wrap(cx, this);
michael@0: }
michael@0: 
michael@0: void
michael@0: Exception::GetMessageMoz(nsString& retval)
michael@0: {
michael@0:   nsCString str;
michael@0: #ifdef DEBUG
michael@0:   DebugOnly<nsresult> rv = 
michael@0: #endif
michael@0:   GetMessageMoz(str);
michael@0:   MOZ_ASSERT(NS_SUCCEEDED(rv));
michael@0:   CopyUTF8toUTF16(str, retval);
michael@0: }
michael@0: 
michael@0: uint32_t
michael@0: Exception::Result() const
michael@0: {
michael@0:   return (uint32_t)mResult;
michael@0: }
michael@0: 
michael@0: void
michael@0: Exception::GetName(nsString& retval)
michael@0: {
michael@0:   nsCString str;
michael@0: #ifdef DEBUG
michael@0:   DebugOnly<nsresult> rv =
michael@0: #endif
michael@0:   GetName(str);
michael@0:   MOZ_ASSERT(NS_SUCCEEDED(rv));
michael@0:   CopyUTF8toUTF16(str, retval);
michael@0: }
michael@0: 
michael@0: uint32_t
michael@0: Exception::LineNumber() const
michael@0: {
michael@0:   if (mLocation) {
michael@0:     int32_t lineno;
michael@0:     if (NS_SUCCEEDED(mLocation->GetLineNumber(&lineno))) {
michael@0:       return lineno;
michael@0:     }
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   return mLineNumber;
michael@0: }
michael@0: 
michael@0: uint32_t
michael@0: Exception::ColumnNumber() const
michael@0: {
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsIStackFrame>
michael@0: Exception::GetLocation() const
michael@0: {
michael@0:   nsCOMPtr<nsIStackFrame> location = mLocation;
michael@0:   return location.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsISupports>
michael@0: Exception::GetInner() const
michael@0: {
michael@0:   nsCOMPtr<nsIException> inner = mInner;
michael@0:   return inner.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsISupports>
michael@0: Exception::GetData() const
michael@0: {
michael@0:   nsCOMPtr<nsISupports> data = mData;
michael@0:   return data.forget();
michael@0: }
michael@0: 
michael@0: void
michael@0: Exception::Stringify(nsString& retval)
michael@0: {
michael@0:   nsCString str;
michael@0: #ifdef DEBUG
michael@0:   DebugOnly<nsresult> rv =
michael@0: #endif
michael@0:   ToString(str);
michael@0:   MOZ_ASSERT(NS_SUCCEEDED(rv));
michael@0:   CopyUTF8toUTF16(str, retval);
michael@0: }
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(DOMException, Exception)
michael@0: NS_IMPL_RELEASE_INHERITED(DOMException, Exception)
michael@0: NS_INTERFACE_MAP_BEGIN(DOMException)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIDOMDOMException)
michael@0: NS_INTERFACE_MAP_END_INHERITING(Exception)
michael@0: 
michael@0: DOMException::DOMException(nsresult aRv, const nsACString& aMessage,
michael@0:                            const nsACString& aName, uint16_t aCode)
michael@0:   : Exception(EmptyCString(), aRv, EmptyCString(), nullptr, nullptr),
michael@0:     mName(aName),
michael@0:     mMessage(aMessage),
michael@0:     mCode(aCode)
michael@0: {
michael@0:   SetIsDOMBinding();
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: DOMException::GetCode(uint16_t* aCode)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aCode);
michael@0:   *aCode = mCode;
michael@0: 
michael@0:   // Warn only when the code was changed (other than DOM Core)
michael@0:   // or the code is useless (zero)
michael@0:   if (NS_ERROR_GET_MODULE(mResult) != NS_ERROR_MODULE_DOM || !mCode) {
michael@0:     nsCOMPtr<nsIDocument> doc = nsContentUtils::GetDocumentFromCaller();
michael@0:     if (doc) {
michael@0:       doc->WarnOnceAbout(nsIDocument::eDOMExceptionCode);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: DOMException::ToString(nsACString& aReturn)
michael@0: {
michael@0:   aReturn.Truncate();
michael@0: 
michael@0:   static const char defaultMsg[] = "<no message>";
michael@0:   static const char defaultLocation[] = "<unknown>";
michael@0:   static const char defaultName[] = "<unknown>";
michael@0:   static const char format[] =
michael@0:     "[Exception... \"%s\"  code: \"%d\" nsresult: \"0x%x (%s)\"  location: \"%s\"]";
michael@0: 
michael@0:   nsAutoCString location;
michael@0: 
michael@0:   if (mInner) {
michael@0:     nsString filename;
michael@0:     mInner->GetFilename(filename);
michael@0: 
michael@0:     if (!filename.IsEmpty()) {
michael@0:       uint32_t line_nr = 0;
michael@0: 
michael@0:       mInner->GetLineNumber(&line_nr);
michael@0: 
michael@0:       char *temp = PR_smprintf("%s Line: %d",
michael@0:                                NS_ConvertUTF16toUTF8(filename).get(),
michael@0:                                line_nr);
michael@0:       if (temp) {
michael@0:         location.Assign(temp);
michael@0:         PR_smprintf_free(temp);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (location.IsEmpty()) {
michael@0:     location = defaultLocation;
michael@0:   }
michael@0: 
michael@0:   const char* msg = !mMessage.IsEmpty() ? mMessage.get() : defaultMsg;
michael@0:   const char* resultName = !mName.IsEmpty() ? mName.get() : defaultName;
michael@0: 
michael@0:   aReturn.AppendPrintf(format, msg, mCode, mResult, resultName,
michael@0:                        location.get());
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: DOMException::GetName(nsString& retval)
michael@0: {
michael@0:   CopyUTF8toUTF16(mName, retval);
michael@0: }
michael@0: 
michael@0: void
michael@0: DOMException::GetMessageMoz(nsString& retval)
michael@0: {
michael@0:   CopyUTF8toUTF16(mMessage, retval);
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: DOMException::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return DOMExceptionBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: /* static */already_AddRefed<DOMException>
michael@0: DOMException::Create(nsresult aRv)
michael@0: {
michael@0:   nsCString name;
michael@0:   nsCString message;
michael@0:   uint16_t code;
michael@0:   NSResultToNameAndMessage(aRv, name, message, &code);
michael@0:   nsRefPtr<DOMException> inst =
michael@0:     new DOMException(aRv, message, name, code);
michael@0:   return inst.forget();
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla