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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /parser/html/nsHtml5DocumentBuilder.h | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'parser/html/nsHtml5DocumentBuilder.h')
-rw-r--r-- | parser/html/nsHtml5DocumentBuilder.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/parser/html/nsHtml5DocumentBuilder.h b/parser/html/nsHtml5DocumentBuilder.h new file mode 100644 index 000000000..86a02ff8c --- /dev/null +++ b/parser/html/nsHtml5DocumentBuilder.h @@ -0,0 +1,130 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 sw=2 et tw=78: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef nsHtml5DocumentBuilder_h +#define nsHtml5DocumentBuilder_h + +#include "nsContentSink.h" +#include "nsHtml5DocumentMode.h" +#include "nsIDocument.h" +#include "nsIContent.h" + +typedef nsIContent* nsIContentPtr; + +enum eHtml5FlushState { + eNotFlushing = 0, // not flushing + eInFlush = 1, // the Flush() method is on the call stack + eInDocUpdate = 2, // inside an update batch on the document + eNotifying = 3 // flushing pending append notifications +}; + +class nsHtml5DocumentBuilder : public nsContentSink +{ +public: + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsHtml5DocumentBuilder, + nsContentSink) + + NS_DECL_ISUPPORTS_INHERITED + + inline void HoldElement(already_AddRefed<nsIContent> aContent) + { + *(mOwnedElements.AppendElement()) = aContent; + } + + nsresult Init(nsIDocument* aDoc, nsIURI* aURI, + nsISupports* aContainer, nsIChannel* aChannel); + + // Getters and setters for fields from nsContentSink + nsIDocument* GetDocument() + { + return mDocument; + } + + nsNodeInfoManager* GetNodeInfoManager() + { + return mNodeInfoManager; + } + + /** + * Marks this parser as broken and tells the stream parser (if any) to + * terminate. + * + * @return aReason for convenience + */ + virtual nsresult MarkAsBroken(nsresult aReason); + + /** + * Checks if this parser is broken. Returns a non-NS_OK (i.e. non-0) + * value if broken. + */ + inline nsresult IsBroken() + { + return mBroken; + } + + inline void BeginDocUpdate() + { + NS_PRECONDITION(mFlushState == eInFlush, "Tried to double-open update."); + NS_PRECONDITION(mParser, "Started update without parser."); + mFlushState = eInDocUpdate; + mDocument->BeginUpdate(UPDATE_CONTENT_MODEL); + } + + inline void EndDocUpdate() + { + NS_PRECONDITION(mFlushState != eNotifying, "mFlushState out of sync"); + if (mFlushState == eInDocUpdate) { + mFlushState = eInFlush; + mDocument->EndUpdate(UPDATE_CONTENT_MODEL); + } + } + + bool IsInDocUpdate() + { + return mFlushState == eInDocUpdate; + } + + void SetDocumentCharsetAndSource(nsACString& aCharset, int32_t aCharsetSource); + + /** + * Sets up style sheet load / parse + */ + void UpdateStyleSheet(nsIContent* aElement); + + void SetDocumentMode(nsHtml5DocumentMode m); + + void SetNodeInfoManager(nsNodeInfoManager* aManager) + { + mNodeInfoManager = aManager; + } + + // nsContentSink methods + virtual void UpdateChildCounts() override; + virtual nsresult FlushTags() override; + +protected: + + explicit nsHtml5DocumentBuilder(bool aRunsToCompletion); + virtual ~nsHtml5DocumentBuilder(); + +protected: + AutoTArray<nsCOMPtr<nsIContent>, 32> mOwnedElements; + /** + * Non-NS_OK if this parser should refuse to process any more input. + * For example, the parser needs to be marked as broken if it drops some + * input due to a memory allocation failure. In such a case, the whole + * parser needs to be marked as broken, because some input has been lost + * and parsing more input could lead to a DOM where pieces of HTML source + * that weren't supposed to become scripts become scripts. + * + * Since NS_OK is actually 0, zeroing operator new takes care of + * initializing this. + */ + nsresult mBroken; + eHtml5FlushState mFlushState; +}; + +#endif // nsHtml5DocumentBuilder_h |