зеркало из https://github.com/mozilla/pjs.git
360 строки
10 KiB
C++
360 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** 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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* 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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#ifndef NS_HTML5_PARSER__
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#define NS_HTML5_PARSER__
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#include "nsAutoPtr.h"
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#include "nsIParser.h"
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#include "nsDeque.h"
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#include "nsIURL.h"
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#include "nsParserCIID.h"
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#include "nsITokenizer.h"
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#include "nsThreadUtils.h"
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#include "nsIContentSink.h"
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#include "nsIParserFilter.h"
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#include "nsIRequest.h"
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#include "nsIChannel.h"
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#include "nsCOMArray.h"
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#include "nsContentSink.h"
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#include "nsIHTMLDocument.h"
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#include "nsIUnicharStreamListener.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsIInputStream.h"
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#include "nsDetectionConfident.h"
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#include "nsHtml5UTF16Buffer.h"
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#include "nsHtml5TreeOpExecutor.h"
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#include "nsHtml5StreamParser.h"
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class nsHtml5Parser : public nsIParser {
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public:
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsHtml5Parser, nsIParser)
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nsHtml5Parser();
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virtual ~nsHtml5Parser();
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/* Start nsIParser */
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/**
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* No-op for backwards compat.
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*/
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NS_IMETHOD_(void) SetContentSink(nsIContentSink* aSink);
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/**
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* Returns |this| for backwards compat.
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*/
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NS_IMETHOD_(nsIContentSink*) GetContentSink(void);
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/**
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* Always returns "view" for backwards compat.
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*/
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NS_IMETHOD_(void) GetCommand(nsCString& aCommand);
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/**
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* No-op for backwards compat.
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*/
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NS_IMETHOD_(void) SetCommand(const char* aCommand);
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/**
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* No-op for backwards compat.
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*/
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NS_IMETHOD_(void) SetCommand(eParserCommands aParserCommand);
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/**
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* Call this method once you've created a parser, and want to instruct it
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* about what charset to load
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*
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* @param aCharset the charset of a document
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* @param aCharsetSource the source of the charset
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*/
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NS_IMETHOD_(void) SetDocumentCharset(const nsACString& aCharset, PRInt32 aSource);
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/**
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* Don't call. For interface compat only.
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*/
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NS_IMETHOD_(void) GetDocumentCharset(nsACString& aCharset, PRInt32& aSource)
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{
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NS_NOTREACHED("No one should call this.");
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}
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/**
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* No-op for backwards compat.
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*/
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NS_IMETHOD_(void) SetParserFilter(nsIParserFilter* aFilter);
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/**
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* Get the channel associated with this parser
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* @param aChannel out param that will contain the result
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* @return NS_OK if successful or NS_NOT_AVAILABLE if not
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*/
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NS_IMETHOD GetChannel(nsIChannel** aChannel);
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/**
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* Return |this| for backwards compat.
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*/
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NS_IMETHOD GetDTD(nsIDTD** aDTD);
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/**
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* Get the stream parser for this parser
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*/
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NS_IMETHOD GetStreamListener(nsIStreamListener** aListener);
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/**
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* Unblocks parser and calls ContinueInterruptedParsing()
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*/
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NS_IMETHOD ContinueParsing();
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/**
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* If scripts are not executing, maybe flushes tree builder and parses
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* until suspension.
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*/
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NS_IMETHOD ContinueInterruptedParsing();
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/**
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* Blocks the parser.
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*/
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NS_IMETHOD_(void) BlockParser();
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/**
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* Unblocks the parser.
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*/
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NS_IMETHOD_(void) UnblockParser();
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/**
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* Query whether the parser is enabled or not.
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*/
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NS_IMETHOD_(PRBool) IsParserEnabled();
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/**
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* Query whether the parser thinks it's done with parsing.
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*/
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NS_IMETHOD_(PRBool) IsComplete();
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/**
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* Set up request observer.
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*
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* @param aURL ignored (for interface compat only)
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* @param aListener a listener to forward notifications to
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* @param aKey the root context key (used for document.write)
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* @param aMode ignored (for interface compat only)
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*/
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NS_IMETHOD Parse(nsIURI* aURL,
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nsIRequestObserver* aListener = nsnull,
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void* aKey = 0,
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nsDTDMode aMode = eDTDMode_autodetect);
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/**
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* document.write and document.close
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*
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* @param aSourceBuffer the argument of document.write (empty for .close())
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* @param aKey a key unique to the script element that caused this call
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* @param aContentType ignored (for interface compat only)
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* @param aLastCall true if .close() false if .write()
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* @param aMode ignored (for interface compat only)
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*/
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NS_IMETHOD Parse(const nsAString& aSourceBuffer,
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void* aKey,
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const nsACString& aContentType,
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PRBool aLastCall,
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nsDTDMode aMode = eDTDMode_autodetect);
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/**
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* Gets the key passed to initial Parse()
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*/
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NS_IMETHOD_(void *) GetRootContextKey();
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/**
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* Stops the parser prematurely
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*/
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NS_IMETHOD Terminate(void);
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/**
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* Don't call. For interface backwards compat only.
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*/
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NS_IMETHOD ParseFragment(const nsAString& aSourceBuffer,
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void* aKey,
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nsTArray<nsString>& aTagStack,
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PRBool aXMLMode,
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const nsACString& aContentType,
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nsDTDMode aMode = eDTDMode_autodetect);
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/**
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* Invoke the fragment parsing algorithm (innerHTML).
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*
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* @param aSourceBuffer the string being set as innerHTML
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* @param aTargetNode the target container (must QI to nsIContent)
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* @param aContextLocalName local name of context node
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* @param aContextNamespace namespace of context node
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* @param aQuirks true to make <table> not close <p>
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*/
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NS_IMETHOD ParseFragment(const nsAString& aSourceBuffer,
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nsISupports* aTargetNode,
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nsIAtom* aContextLocalName,
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PRInt32 aContextNamespace,
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PRBool aQuirks);
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/**
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* Calls ParseUntilSuspend()
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*/
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NS_IMETHOD BuildModel(void);
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/**
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* Removes continue parsing events
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*/
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NS_IMETHODIMP CancelParsingEvents();
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/**
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* Sets the state to initial values
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*/
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virtual void Reset();
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/**
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* True in fragment mode and during synchronous document.write
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*/
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virtual PRBool CanInterrupt();
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/* End nsIParser */
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/**
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* Fired when the continue parse event is triggered.
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*/
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void HandleParserContinueEvent(class nsHtml5ParserContinueEvent *);
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// Not from an external interface
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// Non-inherited methods
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public:
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/**
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* Initializes the parser to load from a channel.
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*/
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virtual nsresult Initialize(nsIDocument* aDoc,
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nsIURI* aURI,
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nsISupports* aContainer,
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nsIChannel* aChannel);
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/**
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* Request event loop spin as soon as the tokenizer returns
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*/
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void Suspend();
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inline nsHtml5Tokenizer* GetTokenizer() {
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return mTokenizer;
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}
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/**
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* Posts a continue event if there isn't one already
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*/
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void MaybePostContinueEvent();
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void DropStreamParser() {
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mStreamParser = nsnull;
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}
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private:
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/**
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* Parse until pending data is exhausted or tree builder suspends
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*/
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void ParseUntilSuspend();
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// State variables
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/**
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* Whether the last character tokenized was a carriage return (for CRLF)
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*/
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PRBool mLastWasCR;
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/**
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* The parser is in the fragment mode
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*/
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PRBool mFragmentMode;
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/**
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* The parser is blocking on a script
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*/
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PRBool mBlocked;
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/**
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* The event loop will spin ASAP
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*/
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PRBool mSuspending;
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// script execution
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// Gecko integration
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void* mRootContextKey;
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nsIRunnable* mContinueEvent; // weak ref
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// Portable parser objects
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/**
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* The first buffer in the pending UTF-16 buffer queue
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*/
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nsHtml5UTF16Buffer* mFirstBuffer; // manually managed strong ref
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/**
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* The last buffer in the pending UTF-16 buffer queue
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*/
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nsHtml5UTF16Buffer* mLastBuffer; // weak ref; always points to
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// a buffer of the size NS_HTML5_PARSER_READ_BUFFER_SIZE
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/**
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* The tree operation executor
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*/
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nsRefPtr<nsHtml5TreeOpExecutor> mExecutor;
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/**
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* The HTML5 tree builder
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*/
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const nsAutoPtr<nsHtml5TreeBuilder> mTreeBuilder;
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/**
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* The HTML5 tokenizer
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*/
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const nsAutoPtr<nsHtml5Tokenizer> mTokenizer;
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/**
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* The stream parser.
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*/
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nsRefPtr<nsHtml5StreamParser> mStreamParser;
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};
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#endif
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