mirror of
https://github.com/classilla/tenfourfox.git
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249 lines
7.1 KiB
C++
249 lines
7.1 KiB
C++
/* 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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#define NS_HTML5_TREE_BUILDER_HANDLE_ARRAY_LENGTH 512
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private:
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nsHtml5OplessBuilder* mBuilder;
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// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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// If mBuilder is not null, the tree op machinery is not in use and
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// the fields below aren't in use, either.
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// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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nsHtml5Highlighter* mViewSource;
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nsTArray<nsHtml5TreeOperation> mOpQueue;
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nsTArray<nsHtml5SpeculativeLoad> mSpeculativeLoadQueue;
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nsAHtml5TreeOpSink* mOpSink;
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mozilla::UniquePtr<nsIContent*[]> mHandles;
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int32_t mHandlesUsed;
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nsTArray<mozilla::UniquePtr<nsIContent*[]>> mOldHandles;
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nsHtml5TreeOpStage* mSpeculativeLoadStage;
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nsresult mBroken;
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bool mCurrentHtmlScriptIsAsyncOrDefer;
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bool mPreventScriptExecution;
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#ifdef DEBUG
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bool mActive;
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#endif
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// DocumentModeHandler
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/**
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* Tree builder uses this to report quirkiness of the document
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*/
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void documentMode(nsHtml5DocumentMode m);
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nsIContentHandle* getDocumentFragmentForTemplate(nsIContentHandle* aTemplate);
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nsIContentHandle* getFormPointerForContext(nsIContentHandle* aContext);
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/**
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* Using nsIContent** instead of nsIContent* is the parser deals with DOM
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* nodes in a way that works off the main thread. Non-main-thread code
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* can't refcount or otherwise touch nsIContent objects in any way.
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* Yet, the off-the-main-thread code needs to have a way to hold onto a
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* particular node and repeatedly operate on the same node.
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*
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* The way this works is that the off-the-main-thread code has an
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* nsIContent** for each DOM node and a given nsIContent** is only ever
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* actually dereferenced into an actual nsIContent* on the main thread.
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* When the off-the-main-thread code requests a new node, it gets an
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* nsIContent** immediately and a tree op is enqueued for later allocating
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* an actual nsIContent object and writing a pointer to it into the memory
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* location pointed to by the nsIContent**.
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*
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* Since tree ops are in a queue, the node creating tree op will always
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* run before tree ops that try to further operate on the node that the
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* nsIContent** is a handle to.
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*
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* On-the-main-thread parts of the parser use nsIContent* instead of
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* nsIContent**. Since both cases share the same parser core, the parser
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* core casts both to nsIContentHandle*.
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*/
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nsIContentHandle* AllocateContentHandle();
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void accumulateCharactersForced(const char16_t* aBuf, int32_t aStart, int32_t aLength)
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{
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accumulateCharacters(aBuf, aStart, aLength);
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}
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void MarkAsBrokenAndRequestSuspension(nsresult aRv)
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{
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mBuilder->MarkAsBroken(aRv);
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requestSuspension();
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}
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void MarkAsBrokenFromPortability(nsresult aRv);
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public:
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explicit nsHtml5TreeBuilder(nsHtml5OplessBuilder* aBuilder);
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nsHtml5TreeBuilder(nsAHtml5TreeOpSink* aOpSink,
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nsHtml5TreeOpStage* aStage);
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~nsHtml5TreeBuilder();
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void StartPlainTextViewSource(const nsAutoString& aTitle);
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void StartPlainText();
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void StartPlainTextBody();
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bool HasScript();
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void SetOpSink(nsAHtml5TreeOpSink* aOpSink)
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{
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mOpSink = aOpSink;
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}
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void ClearOps()
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{
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mOpQueue.Clear();
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}
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bool Flush(bool aDiscretionary = false);
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void FlushLoads();
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void SetDocumentCharset(nsACString& aCharset, int32_t aCharsetSource);
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void StreamEnded();
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void NeedsCharsetSwitchTo(const nsACString& aEncoding,
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int32_t aSource,
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int32_t aLineNumber);
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void MaybeComplainAboutCharset(const char* aMsgId,
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bool aError,
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int32_t aLineNumber);
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void AddSnapshotToScript(nsAHtml5TreeBuilderState* aSnapshot, int32_t aLine);
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void DropHandles();
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void SetPreventScriptExecution(bool aPrevent)
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{
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mPreventScriptExecution = aPrevent;
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}
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bool HasBuilder()
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{
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return mBuilder;
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}
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/**
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* Makes sure the buffers are large enough to be able to tokenize aLength
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* UTF-16 code units before having to make the buffers larger.
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*
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* @param aLength the number of UTF-16 code units to be tokenized before the
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* next call to this method.
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* @return true if successful; false if out of memory
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*/
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bool EnsureBufferSpace(int32_t aLength);
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void EnableViewSource(nsHtml5Highlighter* aHighlighter);
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void errStrayStartTag(nsIAtom* aName);
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void errStrayEndTag(nsIAtom* aName);
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void errUnclosedElements(int32_t aIndex, nsIAtom* aName);
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void errUnclosedElementsImplied(int32_t aIndex, nsIAtom* aName);
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void errUnclosedElementsCell(int32_t aIndex);
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void errStrayDoctype();
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void errAlmostStandardsDoctype();
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void errQuirkyDoctype();
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void errNonSpaceInTrailer();
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void errNonSpaceAfterFrameset();
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void errNonSpaceInFrameset();
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void errNonSpaceAfterBody();
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void errNonSpaceInColgroupInFragment();
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void errNonSpaceInNoscriptInHead();
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void errFooBetweenHeadAndBody(nsIAtom* aName);
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void errStartTagWithoutDoctype();
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void errNoSelectInTableScope();
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void errStartSelectWhereEndSelectExpected();
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void errStartTagWithSelectOpen(nsIAtom* aName);
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void errBadStartTagInHead(nsIAtom* aName);
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void errImage();
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void errIsindex();
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void errFooSeenWhenFooOpen(nsIAtom* aName);
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void errHeadingWhenHeadingOpen();
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void errFramesetStart();
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void errNoCellToClose();
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void errStartTagInTable(nsIAtom* aName);
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void errFormWhenFormOpen();
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void errTableSeenWhileTableOpen();
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void errStartTagInTableBody(nsIAtom* aName);
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void errEndTagSeenWithoutDoctype();
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void errEndTagAfterBody();
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void errEndTagSeenWithSelectOpen(nsIAtom* aName);
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void errGarbageInColgroup();
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void errEndTagBr();
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void errNoElementToCloseButEndTagSeen(nsIAtom* aName);
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void errHtmlStartTagInForeignContext(nsIAtom* aName);
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void errTableClosedWhileCaptionOpen();
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void errNoTableRowToClose();
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void errNonSpaceInTable();
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void errUnclosedChildrenInRuby();
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void errStartTagSeenWithoutRuby(nsIAtom* aName);
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void errSelfClosing();
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void errNoCheckUnclosedElementsOnStack();
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void errEndTagDidNotMatchCurrentOpenElement(nsIAtom* aName, nsIAtom* aOther);
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void errEndTagViolatesNestingRules(nsIAtom* aName);
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void errEndWithUnclosedElements(nsIAtom* aName);
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void MarkAsBroken(nsresult aRv);
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/**
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* Checks if this parser is broken. Returns a non-NS_OK (i.e. non-0)
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* value if broken.
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*/
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nsresult IsBroken()
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{
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return mBroken;
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}
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