forked from mirrors/gecko-dev
83 lines
2.6 KiB
C++
83 lines
2.6 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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/*
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* A class that handles loading and evaluation of <script> elements.
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*/
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#ifndef mozilla_dom_ScriptLoadHandler_h
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#define mozilla_dom_ScriptLoadHandler_h
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#include "nsIIncrementalStreamLoader.h"
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namespace mozilla {
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namespace dom {
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class ScriptLoadRequest;
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class ScriptLoader;
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class SRICheckDataVerifier;
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class ScriptLoadHandler final : public nsIIncrementalStreamLoaderObserver
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{
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public:
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explicit ScriptLoadHandler(ScriptLoader* aScriptLoader,
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ScriptLoadRequest* aRequest,
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SRICheckDataVerifier* aSRIDataVerifier);
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NS_DECL_ISUPPORTS
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NS_DECL_NSIINCREMENTALSTREAMLOADEROBSERVER
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private:
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virtual ~ScriptLoadHandler();
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/*
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* Once the charset is found by the EnsureDecoder function, we can
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* incrementally convert the charset to the one expected by the JS Parser.
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*/
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nsresult DecodeRawData(const uint8_t* aData, uint32_t aDataLength,
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bool aEndOfStream);
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/*
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* Discover the charset by looking at the stream data, the script
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* tag, and other indicators. Returns true if charset has been
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* discovered.
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*/
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bool EnsureDecoder(nsIIncrementalStreamLoader* aLoader,
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const uint8_t* aData, uint32_t aDataLength,
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bool aEndOfStream);
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bool EnsureDecoder(nsIIncrementalStreamLoader* aLoader,
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const uint8_t* aData, uint32_t aDataLength,
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bool aEndOfStream, nsCString& oCharset);
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/*
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* When streaming bytecode, we have the opportunity to fallback early if SRI
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* does not match the expectation of the document.
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*/
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nsresult MaybeDecodeSRI();
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// Query the channel to find the data type associated with the input stream.
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nsresult EnsureKnownDataType(nsIIncrementalStreamLoader* aLoader);
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// ScriptLoader which will handle the parsed script.
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RefPtr<ScriptLoader> mScriptLoader;
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// The ScriptLoadRequest for this load. Decoded data are accumulated on it.
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RefPtr<ScriptLoadRequest> mRequest;
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// SRI data verifier.
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nsAutoPtr<SRICheckDataVerifier> mSRIDataVerifier;
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// Status of SRI data operations.
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nsresult mSRIStatus;
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// Unicode decoder for charset.
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mozilla::UniquePtr<mozilla::Decoder> mDecoder;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_ScriptLoadHandler_h
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