зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
3.8 KiB
C++
122 строки
3.8 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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#include "nsHtml5StringParser.h"
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#include "nsHtml5DependentUTF16Buffer.h"
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#include "nsHtml5Tokenizer.h"
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#include "nsHtml5TreeBuilder.h"
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#include "nsHtml5TreeOpExecutor.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "mozilla/dom/DocumentFragment.h"
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NS_IMPL_ISUPPORTS0(nsHtml5StringParser)
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nsHtml5StringParser::nsHtml5StringParser()
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: mBuilder(new nsHtml5OplessBuilder())
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, mTreeBuilder(new nsHtml5TreeBuilder(mBuilder))
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, mTokenizer(new nsHtml5Tokenizer(mTreeBuilder, false))
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{
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mTokenizer->setInterner(&mAtomTable);
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}
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nsHtml5StringParser::~nsHtml5StringParser() {}
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nsresult
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nsHtml5StringParser::ParseFragment(const nsAString& aSourceBuffer,
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nsIContent* aTargetNode,
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nsAtom* aContextLocalName,
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int32_t aContextNamespace,
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bool aQuirks,
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bool aPreventScriptExecution)
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{
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NS_ENSURE_TRUE(aSourceBuffer.Length() <= INT32_MAX, NS_ERROR_OUT_OF_MEMORY);
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nsIDocument* doc = aTargetNode->OwnerDoc();
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nsIURI* uri = doc->GetDocumentURI();
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NS_ENSURE_TRUE(uri, NS_ERROR_NOT_AVAILABLE);
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mTreeBuilder->setFragmentContext(
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aContextLocalName, aContextNamespace, aTargetNode, aQuirks);
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#ifdef DEBUG
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if (!aPreventScriptExecution) {
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NS_ASSERTION(!aTargetNode->IsInUncomposedDoc(),
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"If script execution isn't prevented, "
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"the target node must not be in doc.");
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NS_ASSERTION(
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aTargetNode->NodeType() == nsINode::DOCUMENT_FRAGMENT_NODE,
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"If script execution isn't prevented, must parse to DOM fragment.");
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}
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#endif
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mTreeBuilder->SetPreventScriptExecution(aPreventScriptExecution);
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return Tokenize(aSourceBuffer, doc, true);
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}
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nsresult
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nsHtml5StringParser::ParseDocument(const nsAString& aSourceBuffer,
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nsIDocument* aTargetDoc,
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bool aScriptingEnabledForNoscriptParsing)
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{
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MOZ_ASSERT(!aTargetDoc->GetFirstChild());
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NS_ENSURE_TRUE(aSourceBuffer.Length() <= INT32_MAX, NS_ERROR_OUT_OF_MEMORY);
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mTreeBuilder->setFragmentContext(nullptr, kNameSpaceID_None, nullptr, false);
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mTreeBuilder->SetPreventScriptExecution(true);
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return Tokenize(
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aSourceBuffer, aTargetDoc, aScriptingEnabledForNoscriptParsing);
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}
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nsresult
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nsHtml5StringParser::Tokenize(const nsAString& aSourceBuffer,
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nsIDocument* aDocument,
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bool aScriptingEnabledForNoscriptParsing)
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{
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nsIURI* uri = aDocument->GetDocumentURI();
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mBuilder->Init(aDocument, uri, nullptr, nullptr);
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mBuilder->SetParser(this);
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mBuilder->SetNodeInfoManager(aDocument->NodeInfoManager());
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// Mark the parser as *not* broken by passing NS_OK
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nsresult rv = mBuilder->MarkAsBroken(NS_OK);
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mTreeBuilder->setScriptingEnabled(aScriptingEnabledForNoscriptParsing);
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mTreeBuilder->setIsSrcdocDocument(aDocument->IsSrcdocDocument());
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mBuilder->Start();
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mTokenizer->start();
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if (!aSourceBuffer.IsEmpty()) {
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bool lastWasCR = false;
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nsHtml5DependentUTF16Buffer buffer(aSourceBuffer);
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while (buffer.hasMore()) {
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buffer.adjust(lastWasCR);
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lastWasCR = false;
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if (buffer.hasMore()) {
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if (!mTokenizer->EnsureBufferSpace(buffer.getLength())) {
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rv = mBuilder->MarkAsBroken(NS_ERROR_OUT_OF_MEMORY);
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break;
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}
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lastWasCR = mTokenizer->tokenizeBuffer(&buffer);
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if (NS_FAILED(rv = mBuilder->IsBroken())) {
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break;
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}
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}
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}
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}
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if (NS_SUCCEEDED(rv)) {
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mTokenizer->eof();
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}
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mTokenizer->end();
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mBuilder->Finish();
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mAtomTable.Clear();
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return rv;
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}
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