mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-13 10:25:01 +00:00
1138 lines
34 KiB
C++
1138 lines
34 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 et tw=78: */
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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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#include "nsError.h"
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#include "nsIPresShell.h"
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#include "nsEvent.h"
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#include "nsGUIEvent.h"
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#include "nsEventDispatcher.h"
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#include "nsNodeUtils.h"
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#include "nsIFrame.h"
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#include "mozilla/Likely.h"
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class nsPresContext;
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nsHtml5TreeBuilder::nsHtml5TreeBuilder(nsAHtml5TreeOpSink* aOpSink,
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nsHtml5TreeOpStage* aStage)
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: scriptingEnabled(false)
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, fragment(false)
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, contextNode(nullptr)
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, formPointer(nullptr)
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, headPointer(nullptr)
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, mViewSource(nullptr)
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, mOpSink(aOpSink)
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, mHandles(new nsIContent*[NS_HTML5_TREE_BUILDER_HANDLE_ARRAY_LENGTH])
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, mHandlesUsed(0)
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, mSpeculativeLoadStage(aStage)
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, mCurrentHtmlScriptIsAsyncOrDefer(false)
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, mPreventScriptExecution(false)
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#ifdef DEBUG
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, mActive(false)
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#endif
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{
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MOZ_COUNT_CTOR(nsHtml5TreeBuilder);
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}
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nsHtml5TreeBuilder::~nsHtml5TreeBuilder()
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{
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MOZ_COUNT_DTOR(nsHtml5TreeBuilder);
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NS_ASSERTION(!mActive, "nsHtml5TreeBuilder deleted without ever calling end() on it!");
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mOpQueue.Clear();
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}
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nsIContent**
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nsHtml5TreeBuilder::createElement(int32_t aNamespace, nsIAtom* aName, nsHtml5HtmlAttributes* aAttributes)
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{
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NS_PRECONDITION(aAttributes, "Got null attributes.");
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NS_PRECONDITION(aName, "Got null name.");
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NS_PRECONDITION(aNamespace == kNameSpaceID_XHTML ||
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aNamespace == kNameSpaceID_SVG ||
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aNamespace == kNameSpaceID_MathML,
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"Bogus namespace.");
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nsIContent** content = AllocateContentHandle();
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(aNamespace,
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aName,
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aAttributes,
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content,
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!!mSpeculativeLoadStage);
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// mSpeculativeLoadStage is non-null only in the off-the-main-thread
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// tree builder, which handles the network stream
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// Start wall of code for speculative loading and line numbers
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if (mSpeculativeLoadStage) {
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switch (aNamespace) {
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case kNameSpaceID_XHTML:
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if (nsHtml5Atoms::img == aName) {
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_SRC);
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if (url) {
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nsString* crossOrigin =
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aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
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mSpeculativeLoadQueue.AppendElement()->
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InitImage(*url,
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crossOrigin ? *crossOrigin : NullString());
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}
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} else if (nsHtml5Atoms::script == aName) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetScriptLineNumberAndFreeze, content, tokenizer->getLineNumber());
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_SRC);
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if (url) {
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nsString* charset = aAttributes->getValue(nsHtml5AttributeName::ATTR_CHARSET);
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nsString* type = aAttributes->getValue(nsHtml5AttributeName::ATTR_TYPE);
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nsString* crossOrigin =
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aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
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mSpeculativeLoadQueue.AppendElement()->
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InitScript(*url,
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(charset) ? *charset : EmptyString(),
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(type) ? *type : EmptyString(),
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(crossOrigin) ? *crossOrigin : NullString(),
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mode == NS_HTML5TREE_BUILDER_IN_HEAD);
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mCurrentHtmlScriptIsAsyncOrDefer =
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aAttributes->contains(nsHtml5AttributeName::ATTR_ASYNC) ||
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aAttributes->contains(nsHtml5AttributeName::ATTR_DEFER);
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}
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} else if (nsHtml5Atoms::link == aName) {
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nsString* rel = aAttributes->getValue(nsHtml5AttributeName::ATTR_REL);
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// Not splitting on space here is bogus but the old parser didn't even
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// do a case-insensitive check.
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if (rel && rel->LowerCaseEqualsASCII("stylesheet")) {
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_HREF);
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if (url) {
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nsString* charset = aAttributes->getValue(nsHtml5AttributeName::ATTR_CHARSET);
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nsString* crossOrigin =
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aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
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mSpeculativeLoadQueue.AppendElement()->
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InitStyle(*url,
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(charset) ? *charset : EmptyString(),
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(crossOrigin) ? *crossOrigin : NullString());
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}
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}
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} else if (nsHtml5Atoms::video == aName) {
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_POSTER);
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if (url) {
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mSpeculativeLoadQueue.AppendElement()->InitImage(*url, NullString());
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}
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} else if (nsHtml5Atoms::style == aName) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetStyleLineNumber, content, tokenizer->getLineNumber());
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} else if (nsHtml5Atoms::html == aName) {
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_MANIFEST);
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if (url) {
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mSpeculativeLoadQueue.AppendElement()->InitManifest(*url);
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} else {
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mSpeculativeLoadQueue.AppendElement()->InitManifest(EmptyString());
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}
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} else if (nsHtml5Atoms::base == aName) {
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nsString* url =
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aAttributes->getValue(nsHtml5AttributeName::ATTR_HREF);
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if (url) {
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mSpeculativeLoadQueue.AppendElement()->InitBase(*url);
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}
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}
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break;
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case kNameSpaceID_SVG:
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if (nsHtml5Atoms::image == aName) {
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_XLINK_HREF);
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if (url) {
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mSpeculativeLoadQueue.AppendElement()->InitImage(*url, NullString());
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}
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} else if (nsHtml5Atoms::script == aName) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetScriptLineNumberAndFreeze, content, tokenizer->getLineNumber());
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_XLINK_HREF);
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if (url) {
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nsString* type = aAttributes->getValue(nsHtml5AttributeName::ATTR_TYPE);
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nsString* crossOrigin =
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aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
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mSpeculativeLoadQueue.AppendElement()->
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InitScript(*url,
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EmptyString(),
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(type) ? *type : EmptyString(),
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(crossOrigin) ? *crossOrigin : NullString(),
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mode == NS_HTML5TREE_BUILDER_IN_HEAD);
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}
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} else if (nsHtml5Atoms::style == aName) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetStyleLineNumber, content, tokenizer->getLineNumber());
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_XLINK_HREF);
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if (url) {
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nsString* crossOrigin =
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aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
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mSpeculativeLoadQueue.AppendElement()->
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InitStyle(*url, EmptyString(),
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(crossOrigin) ? *crossOrigin : NullString());
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}
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}
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break;
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}
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} else if (aNamespace != kNameSpaceID_MathML) {
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// No speculative loader--just line numbers and defer/async check
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if (nsHtml5Atoms::style == aName) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetStyleLineNumber, content, tokenizer->getLineNumber());
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} else if (nsHtml5Atoms::script == aName) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetScriptLineNumberAndFreeze, content, tokenizer->getLineNumber());
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if (aNamespace == kNameSpaceID_XHTML) {
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mCurrentHtmlScriptIsAsyncOrDefer =
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aAttributes->contains(nsHtml5AttributeName::ATTR_SRC) &&
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(aAttributes->contains(nsHtml5AttributeName::ATTR_ASYNC) ||
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aAttributes->contains(nsHtml5AttributeName::ATTR_DEFER));
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}
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} else if (aNamespace == kNameSpaceID_XHTML && nsHtml5Atoms::html == aName) {
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nsString* url = aAttributes->getValue(nsHtml5AttributeName::ATTR_MANIFEST);
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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if (url) {
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treeOp->Init(eTreeOpProcessOfflineManifest, *url);
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} else {
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treeOp->Init(eTreeOpProcessOfflineManifest, EmptyString());
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}
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}
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}
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// End wall of code for speculative loading
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return content;
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}
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nsIContent**
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nsHtml5TreeBuilder::createElement(int32_t aNamespace, nsIAtom* aName, nsHtml5HtmlAttributes* aAttributes, nsIContent** aFormElement)
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{
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nsIContent** content = createElement(aNamespace, aName, aAttributes);
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if (aFormElement) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpSetFormElement, content, aFormElement);
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}
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return content;
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}
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nsIContent**
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nsHtml5TreeBuilder::createHtmlElementSetAsRoot(nsHtml5HtmlAttributes* aAttributes)
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{
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nsIContent** content = createElement(kNameSpaceID_XHTML, nsHtml5Atoms::html, aAttributes);
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppendToDocument, content);
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return content;
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}
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void
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nsHtml5TreeBuilder::detachFromParent(nsIContent** aElement)
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{
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NS_PRECONDITION(aElement, "Null element");
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpDetach, aElement);
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}
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void
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nsHtml5TreeBuilder::appendElement(nsIContent** aChild, nsIContent** aParent)
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{
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NS_PRECONDITION(aChild, "Null child");
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NS_PRECONDITION(aParent, "Null parent");
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if (deepTreeSurrogateParent) {
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return;
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}
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppend, aChild, aParent);
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}
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void
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nsHtml5TreeBuilder::appendChildrenToNewParent(nsIContent** aOldParent, nsIContent** aNewParent)
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{
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NS_PRECONDITION(aOldParent, "Null old parent");
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NS_PRECONDITION(aNewParent, "Null new parent");
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppendChildrenToNewParent, aOldParent, aNewParent);
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}
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void
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nsHtml5TreeBuilder::insertFosterParentedCharacters(PRUnichar* aBuffer, int32_t aStart, int32_t aLength, nsIContent** aTable, nsIContent** aStackParent)
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{
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NS_PRECONDITION(aBuffer, "Null buffer");
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NS_PRECONDITION(aTable, "Null table");
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NS_PRECONDITION(aStackParent, "Null stack parent");
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PRUnichar* bufferCopy = new PRUnichar[aLength];
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memcpy(bufferCopy, aBuffer, aLength * sizeof(PRUnichar));
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpFosterParentText, bufferCopy, aLength, aStackParent, aTable);
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}
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void
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nsHtml5TreeBuilder::insertFosterParentedChild(nsIContent** aChild, nsIContent** aTable, nsIContent** aStackParent)
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{
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NS_PRECONDITION(aChild, "Null child");
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NS_PRECONDITION(aTable, "Null table");
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NS_PRECONDITION(aStackParent, "Null stack parent");
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpFosterParent, aChild, aStackParent, aTable);
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}
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void
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nsHtml5TreeBuilder::appendCharacters(nsIContent** aParent, PRUnichar* aBuffer, int32_t aStart, int32_t aLength)
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{
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NS_PRECONDITION(aBuffer, "Null buffer");
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NS_PRECONDITION(aParent, "Null parent");
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PRUnichar* bufferCopy = new PRUnichar[aLength];
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memcpy(bufferCopy, aBuffer, aLength * sizeof(PRUnichar));
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppendText, bufferCopy, aLength,
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deepTreeSurrogateParent ? deepTreeSurrogateParent : aParent);
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}
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void
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nsHtml5TreeBuilder::appendIsindexPrompt(nsIContent** aParent)
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{
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NS_PRECONDITION(aParent, "Null parent");
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppendIsindexPrompt, aParent);
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}
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void
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nsHtml5TreeBuilder::appendComment(nsIContent** aParent, PRUnichar* aBuffer, int32_t aStart, int32_t aLength)
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{
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NS_PRECONDITION(aBuffer, "Null buffer");
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NS_PRECONDITION(aParent, "Null parent");
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if (deepTreeSurrogateParent) {
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return;
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}
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PRUnichar* bufferCopy = new PRUnichar[aLength];
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memcpy(bufferCopy, aBuffer, aLength * sizeof(PRUnichar));
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppendComment, bufferCopy, aLength, aParent);
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}
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void
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nsHtml5TreeBuilder::appendCommentToDocument(PRUnichar* aBuffer, int32_t aStart, int32_t aLength)
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{
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NS_PRECONDITION(aBuffer, "Null buffer");
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PRUnichar* bufferCopy = new PRUnichar[aLength];
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memcpy(bufferCopy, aBuffer, aLength * sizeof(PRUnichar));
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpAppendCommentToDocument, bufferCopy, aLength);
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}
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void
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nsHtml5TreeBuilder::addAttributesToElement(nsIContent** aElement, nsHtml5HtmlAttributes* aAttributes)
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{
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NS_PRECONDITION(aElement, "Null element");
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NS_PRECONDITION(aAttributes, "Null attributes");
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if (aAttributes == nsHtml5HtmlAttributes::EMPTY_ATTRIBUTES) {
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return;
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}
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(aElement, aAttributes);
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}
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void
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nsHtml5TreeBuilder::markMalformedIfScript(nsIContent** aElement)
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{
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NS_PRECONDITION(aElement, "Null element");
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpMarkMalformedIfScript, aElement);
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}
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void
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nsHtml5TreeBuilder::start(bool fragment)
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{
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mCurrentHtmlScriptIsAsyncOrDefer = false;
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deepTreeSurrogateParent = nullptr;
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#ifdef DEBUG
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mActive = true;
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#endif
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}
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void
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nsHtml5TreeBuilder::end()
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{
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mOpQueue.Clear();
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#ifdef DEBUG
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mActive = false;
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#endif
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}
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void
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nsHtml5TreeBuilder::appendDoctypeToDocument(nsIAtom* aName, nsString* aPublicId, nsString* aSystemId)
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{
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NS_PRECONDITION(aName, "Null name");
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(aName, *aPublicId, *aSystemId);
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// nsXMLContentSink can flush here, but what's the point?
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// It can also interrupt here, but we can't.
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}
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void
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nsHtml5TreeBuilder::elementPushed(int32_t aNamespace, nsIAtom* aName, nsIContent** aElement)
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{
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NS_ASSERTION(aNamespace == kNameSpaceID_XHTML || aNamespace == kNameSpaceID_SVG || aNamespace == kNameSpaceID_MathML, "Element isn't HTML, SVG or MathML!");
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NS_ASSERTION(aName, "Element doesn't have local name!");
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NS_ASSERTION(aElement, "No element!");
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/*
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* The frame constructor uses recursive algorithms, so it can't deal with
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* arbitrarily deep trees. This is especially a problem on Windows where
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* the permitted depth of the runtime stack is rather small.
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*
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* The following is a protection against author incompetence--not against
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* malice. There are other ways to make the DOM deep anyway.
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*
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* The basic idea is that when the tree builder stack gets too deep,
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* append operations no longer append to the node that the HTML parsing
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* algorithm says they should but instead text nodes are append to the last
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* element that was seen before a magic tree builder stack threshold was
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* reached and element and comment nodes aren't appended to the DOM at all.
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*
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* However, for security reasons, non-child descendant text nodes inside an
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* SVG script or style element should not become children. Also, non-cell
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* table elements shouldn't be used as surrogate parents for user experience
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* reasons.
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*/
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if (!deepTreeSurrogateParent && currentPtr >= MAX_REFLOW_DEPTH &&
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!(aName == nsHtml5Atoms::script ||
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aName == nsHtml5Atoms::table ||
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aName == nsHtml5Atoms::thead ||
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aName == nsHtml5Atoms::tfoot ||
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aName == nsHtml5Atoms::tbody ||
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aName == nsHtml5Atoms::tr ||
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aName == nsHtml5Atoms::colgroup ||
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aName == nsHtml5Atoms::style)) {
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deepTreeSurrogateParent = aElement;
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}
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if (aNamespace != kNameSpaceID_XHTML) {
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return;
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}
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if (aName == nsHtml5Atoms::body || aName == nsHtml5Atoms::frameset) {
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nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
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NS_ASSERTION(treeOp, "Tree op allocation failed.");
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treeOp->Init(eTreeOpStartLayout);
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return;
|
|
}
|
|
if (aName == nsHtml5Atoms::input ||
|
|
aName == nsHtml5Atoms::button) {
|
|
if (!formPointer) {
|
|
// If form inputs don't belong to a form, their state preservation
|
|
// won't work right without an append notification flush at this
|
|
// point. See bug 497861.
|
|
mOpQueue.AppendElement()->Init(eTreeOpFlushPendingAppendNotifications);
|
|
}
|
|
mOpQueue.AppendElement()->Init(eTreeOpDoneCreatingElement, aElement);
|
|
return;
|
|
}
|
|
if (aName == nsHtml5Atoms::audio ||
|
|
aName == nsHtml5Atoms::video ||
|
|
aName == nsHtml5Atoms::menuitem) {
|
|
mOpQueue.AppendElement()->Init(eTreeOpDoneCreatingElement, aElement);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::elementPopped(int32_t aNamespace, nsIAtom* aName, nsIContent** aElement)
|
|
{
|
|
NS_ASSERTION(aNamespace == kNameSpaceID_XHTML || aNamespace == kNameSpaceID_SVG || aNamespace == kNameSpaceID_MathML, "Element isn't HTML, SVG or MathML!");
|
|
NS_ASSERTION(aName, "Element doesn't have local name!");
|
|
NS_ASSERTION(aElement, "No element!");
|
|
if (deepTreeSurrogateParent && currentPtr <= MAX_REFLOW_DEPTH) {
|
|
deepTreeSurrogateParent = nullptr;
|
|
}
|
|
if (aNamespace == kNameSpaceID_MathML) {
|
|
return;
|
|
}
|
|
// we now have only SVG and HTML
|
|
if (aName == nsHtml5Atoms::script) {
|
|
if (mPreventScriptExecution) {
|
|
mOpQueue.AppendElement()->Init(eTreeOpPreventScriptExecution, aElement);
|
|
return;
|
|
}
|
|
if (mCurrentHtmlScriptIsAsyncOrDefer) {
|
|
NS_ASSERTION(aNamespace == kNameSpaceID_XHTML,
|
|
"Only HTML scripts may be async/defer.");
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpRunScriptAsyncDefer, aElement);
|
|
mCurrentHtmlScriptIsAsyncOrDefer = false;
|
|
return;
|
|
}
|
|
requestSuspension();
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->InitScript(aElement);
|
|
return;
|
|
}
|
|
if (aName == nsHtml5Atoms::title) {
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpDoneAddingChildren, aElement);
|
|
return;
|
|
}
|
|
if (aName == nsHtml5Atoms::style || (aNamespace == kNameSpaceID_XHTML && aName == nsHtml5Atoms::link)) {
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpUpdateStyleSheet, aElement);
|
|
return;
|
|
}
|
|
if (aNamespace == kNameSpaceID_SVG) {
|
|
if (aName == nsHtml5Atoms::svg) {
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpSvgLoad, aElement);
|
|
}
|
|
return;
|
|
}
|
|
// we now have only HTML
|
|
// Some HTML nodes need DoneAddingChildren() called to initialize
|
|
// properly (e.g. form state restoration).
|
|
// XXX expose ElementName group here and do switch
|
|
if (aName == nsHtml5Atoms::object ||
|
|
aName == nsHtml5Atoms::applet) {
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpDoneAddingChildren, aElement);
|
|
return;
|
|
}
|
|
if (aName == nsHtml5Atoms::select ||
|
|
aName == nsHtml5Atoms::textarea) {
|
|
if (!formPointer) {
|
|
// If form inputs don't belong to a form, their state preservation
|
|
// won't work right without an append notification flush at this
|
|
// point. See bug 497861 and bug 539895.
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpFlushPendingAppendNotifications);
|
|
}
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpDoneAddingChildren, aElement);
|
|
return;
|
|
}
|
|
if (aName == nsHtml5Atoms::meta && !fragment) {
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpProcessMeta, aElement);
|
|
return;
|
|
}
|
|
return;
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::accumulateCharacters(const PRUnichar* aBuf, int32_t aStart, int32_t aLength)
|
|
{
|
|
int32_t newFillLen = charBufferLen + aLength;
|
|
if (newFillLen > charBuffer.length) {
|
|
int32_t newAllocLength = newFillLen + (newFillLen >> 1);
|
|
jArray<PRUnichar,int32_t> newBuf = jArray<PRUnichar,int32_t>::newJArray(newAllocLength);
|
|
memcpy(newBuf, charBuffer, sizeof(PRUnichar) * charBufferLen);
|
|
charBuffer = newBuf;
|
|
}
|
|
memcpy(charBuffer + charBufferLen, aBuf + aStart, sizeof(PRUnichar) * aLength);
|
|
charBufferLen = newFillLen;
|
|
}
|
|
|
|
nsIContent**
|
|
nsHtml5TreeBuilder::AllocateContentHandle()
|
|
{
|
|
if (mHandlesUsed == NS_HTML5_TREE_BUILDER_HANDLE_ARRAY_LENGTH) {
|
|
mOldHandles.AppendElement(mHandles.forget());
|
|
mHandles = new nsIContent*[NS_HTML5_TREE_BUILDER_HANDLE_ARRAY_LENGTH];
|
|
mHandlesUsed = 0;
|
|
}
|
|
#ifdef DEBUG
|
|
mHandles[mHandlesUsed] = (nsIContent*)0xC0DEDBAD;
|
|
#endif
|
|
return &mHandles[mHandlesUsed++];
|
|
}
|
|
|
|
bool
|
|
nsHtml5TreeBuilder::HasScript()
|
|
{
|
|
uint32_t len = mOpQueue.Length();
|
|
if (!len) {
|
|
return false;
|
|
}
|
|
return mOpQueue.ElementAt(len - 1).IsRunScript();
|
|
}
|
|
|
|
bool
|
|
nsHtml5TreeBuilder::Flush(bool aDiscretionary)
|
|
{
|
|
if (!aDiscretionary ||
|
|
!(charBufferLen &&
|
|
currentPtr >= 0 &&
|
|
stack[currentPtr]->isFosterParenting())) {
|
|
// Don't flush text on discretionary flushes if the current element on
|
|
// the stack is a foster-parenting element and there's pending text,
|
|
// because flushing in that case would make the tree shape dependent on
|
|
// where the flush points fall.
|
|
flushCharacters();
|
|
}
|
|
FlushLoads();
|
|
if (mOpSink) {
|
|
bool hasOps = !mOpQueue.IsEmpty();
|
|
if (hasOps) {
|
|
mOpSink->MoveOpsFrom(mOpQueue);
|
|
}
|
|
return hasOps;
|
|
}
|
|
// no op sink: throw away ops
|
|
mOpQueue.Clear();
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::FlushLoads()
|
|
{
|
|
if (!mSpeculativeLoadQueue.IsEmpty()) {
|
|
mSpeculativeLoadStage->MoveSpeculativeLoadsFrom(mSpeculativeLoadQueue);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::SetDocumentCharset(nsACString& aCharset,
|
|
int32_t aCharsetSource)
|
|
{
|
|
if (mSpeculativeLoadStage) {
|
|
mSpeculativeLoadQueue.AppendElement()->InitSetDocumentCharset(
|
|
aCharset, aCharsetSource);
|
|
} else {
|
|
mOpQueue.AppendElement()->Init(
|
|
eTreeOpSetDocumentCharset, aCharset, aCharsetSource);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::StreamEnded()
|
|
{
|
|
// The fragment mode calls DidBuildModel from nsHtml5Parser.
|
|
// Letting DidBuildModel be called from the executor in the fragment case
|
|
// confuses the EndLoad logic of nsHTMLDocument, since nsHTMLDocument
|
|
// thinks it is dealing with document.written content as opposed to
|
|
// innerHTML content.
|
|
if (!fragment) {
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpStreamEnded);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::NeedsCharsetSwitchTo(const nsACString& aCharset,
|
|
int32_t aCharsetSource,
|
|
int32_t aLineNumber)
|
|
{
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(eTreeOpNeedsCharsetSwitchTo,
|
|
aCharset,
|
|
aCharsetSource,
|
|
aLineNumber);
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::MaybeComplainAboutCharset(const char* aMsgId,
|
|
bool aError,
|
|
int32_t aLineNumber)
|
|
{
|
|
mOpQueue.AppendElement()->Init(aMsgId, aError, aLineNumber);
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::AddSnapshotToScript(nsAHtml5TreeBuilderState* aSnapshot, int32_t aLine)
|
|
{
|
|
NS_PRECONDITION(HasScript(), "No script to add a snapshot to!");
|
|
NS_PRECONDITION(aSnapshot, "Got null snapshot.");
|
|
mOpQueue.ElementAt(mOpQueue.Length() - 1).SetSnapshot(aSnapshot, aLine);
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::DropHandles()
|
|
{
|
|
mOldHandles.Clear();
|
|
mHandlesUsed = 0;
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::MarkAsBroken()
|
|
{
|
|
mOpQueue.Clear(); // Previous ops don't matter anymore
|
|
mOpQueue.AppendElement()->Init(eTreeOpMarkAsBroken);
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::StartPlainTextViewSource(const nsAutoString& aTitle)
|
|
{
|
|
startTag(nsHtml5ElementName::ELT_TITLE,
|
|
nsHtml5HtmlAttributes::EMPTY_ATTRIBUTES,
|
|
false);
|
|
|
|
// XUL will add the "Source of: " prefix.
|
|
uint32_t length = aTitle.Length();
|
|
if (length > INT32_MAX) {
|
|
length = INT32_MAX;
|
|
}
|
|
characters(aTitle.get(), 0, (int32_t)length);
|
|
endTag(nsHtml5ElementName::ELT_TITLE);
|
|
|
|
startTag(nsHtml5ElementName::ELT_LINK,
|
|
nsHtml5ViewSourceUtils::NewLinkAttributes(),
|
|
false);
|
|
|
|
startTag(nsHtml5ElementName::ELT_BODY,
|
|
nsHtml5ViewSourceUtils::NewBodyAttributes(),
|
|
false);
|
|
|
|
StartPlainText();
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::StartPlainText()
|
|
{
|
|
startTag(nsHtml5ElementName::ELT_PRE,
|
|
nsHtml5HtmlAttributes::EMPTY_ATTRIBUTES,
|
|
false);
|
|
needToDropLF = false;
|
|
}
|
|
|
|
// DocumentModeHandler
|
|
void
|
|
nsHtml5TreeBuilder::documentMode(nsHtml5DocumentMode m)
|
|
{
|
|
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
|
|
NS_ASSERTION(treeOp, "Tree op allocation failed.");
|
|
treeOp->Init(m);
|
|
}
|
|
|
|
// Error reporting
|
|
|
|
void
|
|
nsHtml5TreeBuilder::EnableViewSource(nsHtml5Highlighter* aHighlighter)
|
|
{
|
|
mViewSource = aHighlighter;
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStrayStartTag(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStrayStartTag2", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStrayEndTag(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStrayEndTag", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errUnclosedElements(int32_t aIndex, nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errUnclosedElements", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errUnclosedElementsImplied(int32_t aIndex, nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errUnclosedElementsImplied",
|
|
aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errUnclosedElementsCell(int32_t aIndex)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errUnclosedElementsCell");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStrayDoctype()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStrayDoctype");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errAlmostStandardsDoctype()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errAlmostStandardsDoctype");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errQuirkyDoctype()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errQuirkyDoctype");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceInTrailer()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceInTrailer");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceAfterFrameset()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceAfterFrameset");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceInFrameset()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceInFrameset");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceAfterBody()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceAfterBody");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceInColgroupInFragment()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceInColgroupInFragment");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceInNoscriptInHead()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceInNoscriptInHead");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errFooBetweenHeadAndBody(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errFooBetweenHeadAndBody", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStartTagWithoutDoctype()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStartTagWithoutDoctype");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNoSelectInTableScope()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNoSelectInTableScope");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStartSelectWhereEndSelectExpected()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun(
|
|
"errStartSelectWhereEndSelectExpected");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStartTagWithSelectOpen(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStartTagWithSelectOpen", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errBadStartTagInHead(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errBadStartTagInHead2", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errImage()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errImage");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errIsindex()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errIsindex");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errFooSeenWhenFooOpen(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errFooSeenWhenFooOpen", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errHeadingWhenHeadingOpen()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errHeadingWhenHeadingOpen");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errFramesetStart()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errFramesetStart");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNoCellToClose()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNoCellToClose");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStartTagInTable(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStartTagInTable", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errFormWhenFormOpen()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errFormWhenFormOpen");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errTableSeenWhileTableOpen()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errTableSeenWhileTableOpen");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStartTagInTableBody(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStartTagInTableBody", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndTagSeenWithoutDoctype()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errEndTagSeenWithoutDoctype");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndTagAfterBody()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errEndTagAfterBody");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndTagSeenWithSelectOpen(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errEndTagSeenWithSelectOpen",
|
|
aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errGarbageInColgroup()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errGarbageInColgroup");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndTagBr()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errEndTagBr");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNoElementToCloseButEndTagSeen(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun(
|
|
"errNoElementToCloseButEndTagSeen", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errHtmlStartTagInForeignContext(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errHtmlStartTagInForeignContext",
|
|
aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errTableClosedWhileCaptionOpen()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errTableClosedWhileCaptionOpen");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNoTableRowToClose()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNoTableRowToClose");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNonSpaceInTable()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errNonSpaceInTable");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errUnclosedChildrenInRuby()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errUnclosedChildrenInRuby");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errStartTagSeenWithoutRuby(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errStartTagSeenWithoutRuby",
|
|
aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errSelfClosing()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentSlash("errSelfClosing");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errNoCheckUnclosedElementsOnStack()
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun(
|
|
"errNoCheckUnclosedElementsOnStack");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndTagDidNotMatchCurrentOpenElement(nsIAtom* aName,
|
|
nsIAtom* aOther)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun(
|
|
"errEndTagDidNotMatchCurrentOpenElement", aName, aOther);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndTagViolatesNestingRules(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errEndTagViolatesNestingRules", aName);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHtml5TreeBuilder::errEndWithUnclosedElements(nsIAtom* aName)
|
|
{
|
|
if (MOZ_UNLIKELY(mViewSource)) {
|
|
mViewSource->AddErrorToCurrentRun("errEndWithUnclosedElements", aName);
|
|
}
|
|
}
|