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4790abe2f7
We shouldn't need pendingScripts in ScriptRunner since we should never be trying to run scripts when we're not ready to run them. However this wasn't completely true in the case of imports there was code to have us break before any start tag after an <import> was seen, but it was subtly wrong in that it it would include the start-tag it was trying to break before in the chunk it sent to the main thread. This didn't run out to be the problem I was facing, but I fixed it anyway. The problem which was actually preventing me from removing pendingScripts was adding a check inside didRecieveParsedChunk... to check if imports were pending and add the chunk to the list of pending chunks. I also renamed m_speculations to m_pendingChunks since these chunks are never speculative anymore. We can't test the off-by-one import-breaking code with our current system, but it would be trivial to test with a self-closing custom element if/when we ever add custom elements back to the system. R=abarth@chromium.org BUG= Review URL: https://codereview.chromium.org/934083002
101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
/*
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* Copyright (C) 2013 Google, Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_CORE_HTML_PARSER_BACKGROUNDHTMLPARSER_H_
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#define SKY_ENGINE_CORE_HTML_PARSER_BACKGROUNDHTMLPARSER_H_
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#include "base/memory/weak_ptr.h"
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#include "mojo/common/data_pipe_drainer.h"
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#include "mojo/public/cpp/system/core.h"
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#include "sky/engine/core/html/parser/CompactHTMLToken.h"
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#include "sky/engine/core/html/parser/HTMLTokenizer.h"
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#include "sky/engine/core/html/parser/TextResourceDecoder.h"
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#include "sky/engine/platform/text/SegmentedString.h"
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#include "sky/engine/wtf/PassOwnPtr.h"
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#include "sky/engine/wtf/WeakPtr.h"
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namespace blink {
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class HTMLDocumentParser;
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class SharedBuffer;
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class BackgroundHTMLParser : public mojo::common::DataPipeDrainer::Client {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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struct Configuration {
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mojo::ScopedDataPipeConsumerHandle source;
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base::WeakPtr<HTMLDocumentParser> parser;
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};
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static base::WeakPtr<BackgroundHTMLParser> create(PassOwnPtr<Configuration>);
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void start();
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void stop();
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private:
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explicit BackgroundHTMLParser(PassOwnPtr<Configuration>);
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~BackgroundHTMLParser();
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// DataPipeDrainer::Client:
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void OnDataAvailable(const void* data, size_t numberOfBytes) override;
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void OnDataComplete() override;
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void finish();
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void markEndOfFile();
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void pumpTokenizer();
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void sendTokensToMainThread();
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enum ContinueBehavior {
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ContinueParsing,
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SendTokensIncludingLast,
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SendTokensExceptingLast,
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};
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ContinueBehavior updateTokenizerState(const CompactHTMLToken& token);
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enum State {
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InitialState,
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DidSeeImportState,
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};
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State m_state;
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SegmentedString m_input;
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OwnPtr<HTMLToken> m_token;
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OwnPtr<HTMLTokenizer> m_tokenizer;
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base::WeakPtr<HTMLDocumentParser> m_parser;
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OwnPtr<CompactHTMLTokenStream> m_pendingTokens;
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OwnPtr<TextResourceDecoder> m_decoder;
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mojo::ScopedDataPipeConsumerHandle m_source;
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OwnPtr<mojo::common::DataPipeDrainer> m_drainer;
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base::WeakPtrFactory<BackgroundHTMLParser> m_weakFactory;
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};
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}
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#endif // SKY_ENGINE_CORE_HTML_PARSER_BACKGROUNDHTMLPARSER_H_
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