зеркало из https://github.com/mozilla/pjs.git
169 строки
5.9 KiB
C++
169 строки
5.9 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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* Henri Sivonen <hsivonen@iki.fi>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsHtml5StringParser.h"
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#include "nsHtml5TreeOpExecutor.h"
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#include "nsHtml5TreeBuilder.h"
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#include "nsHtml5Tokenizer.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocumentFragment.h"
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#include "nsHtml5DependentUTF16Buffer.h"
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NS_IMPL_ISUPPORTS0(nsHtml5StringParser)
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nsHtml5StringParser::nsHtml5StringParser()
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: mExecutor(new nsHtml5TreeOpExecutor(true))
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, mTreeBuilder(new nsHtml5TreeBuilder(mExecutor, nsnull))
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, mTokenizer(new nsHtml5Tokenizer(mTreeBuilder, false))
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{
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MOZ_COUNT_CTOR(nsHtml5StringParser);
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mAtomTable.Init();
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mTokenizer->setInterner(&mAtomTable);
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}
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nsHtml5StringParser::~nsHtml5StringParser()
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{
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MOZ_COUNT_DTOR(nsHtml5StringParser);
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}
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nsresult
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nsHtml5StringParser::ParseFragment(const nsAString& aSourceBuffer,
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nsIContent* aTargetNode,
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nsIAtom* aContextLocalName,
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PRInt32 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() <= PR_INT32_MAX,
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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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nsIContent* target = aTargetNode;
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mTreeBuilder->setFragmentContext(aContextLocalName,
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aContextNamespace,
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&target,
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aQuirks);
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#ifdef DEBUG
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if (!aPreventScriptExecution) {
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NS_ASSERTION(!aTargetNode->IsInDoc(),
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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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nsCOMPtr<nsIDOMDocumentFragment> domFrag = do_QueryInterface(aTargetNode);
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NS_ASSERTION(domFrag,
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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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mExecutor->EnableFragmentMode(aPreventScriptExecution);
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Tokenize(aSourceBuffer, doc, true);
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return NS_OK;
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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() <= PR_INT32_MAX,
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NS_ERROR_OUT_OF_MEMORY);
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mTreeBuilder->setFragmentContext(nsnull,
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kNameSpaceID_None,
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nsnull,
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false);
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mExecutor->PreventScriptExecution();
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Tokenize(aSourceBuffer, aTargetDoc, aScriptingEnabledForNoscriptParsing);
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return NS_OK;
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}
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void
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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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nsIURI* uri = aDocument->GetDocumentURI();
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mExecutor->Init(aDocument, uri, nsnull, nsnull);
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mExecutor->SetParser(this);
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mExecutor->SetNodeInfoManager(aDocument->NodeInfoManager());
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NS_PRECONDITION(!mExecutor->HasStarted(),
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"Tried to start parse without initializing the parser.");
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mTreeBuilder->setScriptingEnabled(aScriptingEnabledForNoscriptParsing);
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mTokenizer->start();
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mExecutor->Start(); // Don't call WillBuildModel in fragment case
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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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lastWasCR = mTokenizer->tokenizeBuffer(&buffer);
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if (mTreeBuilder->HasScript()) {
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// Flush on each script, because the execution prevention code
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// can handle at most one script per flush.
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mTreeBuilder->Flush(); // Move ops to the executor
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mExecutor->FlushDocumentWrite(); // run the ops
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}
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}
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}
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}
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mTokenizer->eof();
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mTreeBuilder->StreamEnded();
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mTreeBuilder->Flush();
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mExecutor->FlushDocumentWrite();
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mTokenizer->end();
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mExecutor->DropParserAndPerfHint();
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mExecutor->DropHeldElements();
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mTreeBuilder->DropHandles();
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mAtomTable.Clear();
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mExecutor->Reset();
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}
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