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105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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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#ifndef mozilla_dom_ClonedErrorHolder_h
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#define mozilla_dom_ClonedErrorHolder_h
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#include "nsISupportsImpl.h"
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#include "js/ErrorReport.h"
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#include "js/TypeDecls.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/StructuredCloneHolder.h"
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#include "mozilla/Attributes.h"
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class nsIGlobalObject;
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class nsQueryActorChild;
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class ClonedErrorHolder final {
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NS_INLINE_DECL_REFCOUNTING(ClonedErrorHolder)
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public:
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static already_AddRefed<ClonedErrorHolder> Constructor(
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const GlobalObject& aGlobal, JS::Handle<JSObject*> aError,
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ErrorResult& aRv);
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static already_AddRefed<ClonedErrorHolder> Create(
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JSContext* aCx, JS::Handle<JSObject*> aError, ErrorResult& aRv);
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enum class Type : uint8_t {
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Uninitialized,
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JSError,
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Exception,
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DOMException,
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Max_,
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};
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bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
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JS::MutableHandle<JSObject*> aReflector);
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bool WriteStructuredClone(JSContext* aCx, JSStructuredCloneWriter* aWriter,
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StructuredCloneHolder* aHolder);
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// Reads the structured clone data for the ClonedErrorHolder and returns the
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// wrapped object (either a JS Error or an Exception/DOMException object)
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// directly. Never returns an actual ClonedErrorHolder object.
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static JSObject* ReadStructuredClone(JSContext* aCx,
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JSStructuredCloneReader* aReader,
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StructuredCloneHolder* aHolder);
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private:
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ClonedErrorHolder();
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~ClonedErrorHolder() = default;
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void Init(JSContext* aCx, JS::Handle<JSObject*> aError, ErrorResult& aRv);
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bool Init(JSContext* aCx, JSStructuredCloneReader* aReader);
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// Creates a new JS Error or Exception/DOMException object based on the
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// values stored in the holder. Returns false and sets an exception on aCx
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// if it fails.
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bool ToErrorValue(JSContext* aCx, JS::MutableHandleValue aResult);
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class Holder final : public StructuredCloneHolder {
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public:
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using StructuredCloneHolder::StructuredCloneHolder;
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bool ReadStructuredCloneInternal(JSContext* aCx,
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JSStructuredCloneReader* aReader);
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};
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// Only a subset of the following fields are used, depending on the mType of
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// the error stored:
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nsCString mName; // Exception, DOMException
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nsCString mMessage; // JSError, Exception, DOMException
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nsCString mFilename; // JSError only
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nsCString mSourceLine; // JSError only
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uint32_t mLineNumber = 0; // JSError only
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uint32_t mColumn = 0; // JSError only
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uint32_t mTokenOffset = 0; // JSError only
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uint32_t mErrorNumber = 0; // JSError only
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Type mType = Type::Uninitialized;
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uint16_t mCode = 0; // DOMException only
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JSExnType mExnType = JSExnType(0); // JSError only
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nsresult mResult = NS_OK; // Exception, DOMException
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// JSError, Exception, DOMException
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Holder mStack{Holder::CloningSupported, Holder::TransferringNotSupported,
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Holder::StructuredCloneScope::DifferentProcess};
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};
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} // namespace dom
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} // namespace mozilla
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#endif // !defined(mozilla_dom_ClonedErrorHolder_h)
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