LCOV - code coverage report
Current view: directory - parser/html - nsHtml5StringParser.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 64 48 75.0 %
Date: 2012-06-02 Functions: 9 7 77.8 %

       1                 : /* ***** BEGIN LICENSE BLOCK *****
       2                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       3                 :  *
       4                 :  * The contents of this file are subject to the Mozilla Public License Version
       5                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       6                 :  * the License. You may obtain a copy of the License at
       7                 :  * http://www.mozilla.org/MPL/
       8                 :  *
       9                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      10                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      11                 :  * for the specific language governing rights and limitations under the
      12                 :  * License.
      13                 :  *
      14                 :  * The Original Code is mozilla.org code.
      15                 :  *
      16                 :  * The Initial Developer of the Original Code is
      17                 :  * Netscape Communications Corporation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Pierre Phaneuf <pp@ludusdesign.com>
      23                 :  *   Henri Sivonen <hsivonen@iki.fi>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsHtml5StringParser.h"
      40                 : #include "nsHtml5TreeOpExecutor.h"
      41                 : #include "nsHtml5TreeBuilder.h"
      42                 : #include "nsHtml5Tokenizer.h"
      43                 : #include "nsIContent.h"
      44                 : #include "nsIDocument.h"
      45                 : #include "nsIDOMDocumentFragment.h"
      46                 : #include "nsHtml5DependentUTF16Buffer.h"
      47                 : 
      48             960 : NS_IMPL_ISUPPORTS0(nsHtml5StringParser)
      49                 : 
      50              12 : nsHtml5StringParser::nsHtml5StringParser()
      51              12 :   : mExecutor(new nsHtml5TreeOpExecutor(true))
      52              24 :   , mTreeBuilder(new nsHtml5TreeBuilder(mExecutor, nsnull))
      53              72 :   , mTokenizer(new nsHtml5Tokenizer(mTreeBuilder, false))
      54                 : {
      55              12 :   MOZ_COUNT_CTOR(nsHtml5StringParser);
      56              12 :   mAtomTable.Init(); // we aren't checking for OOM anyway...
      57              12 :   mTokenizer->setInterner(&mAtomTable);
      58              12 : }
      59                 : 
      60              36 : nsHtml5StringParser::~nsHtml5StringParser()
      61                 : {
      62              12 :   MOZ_COUNT_DTOR(nsHtml5StringParser);
      63              48 : }
      64                 : 
      65                 : nsresult
      66               0 : nsHtml5StringParser::ParseFragment(const nsAString& aSourceBuffer,
      67                 :                                    nsIContent* aTargetNode,
      68                 :                                    nsIAtom* aContextLocalName,
      69                 :                                    PRInt32 aContextNamespace,
      70                 :                                    bool aQuirks,
      71                 :                                    bool aPreventScriptExecution)
      72                 : {
      73               0 :   NS_ENSURE_TRUE(aSourceBuffer.Length() <= PR_INT32_MAX,
      74                 :                  NS_ERROR_OUT_OF_MEMORY);
      75                 : 
      76               0 :   nsIDocument* doc = aTargetNode->OwnerDoc();
      77               0 :   nsIURI* uri = doc->GetDocumentURI();
      78               0 :   NS_ENSURE_TRUE(uri, NS_ERROR_NOT_AVAILABLE);
      79                 : 
      80               0 :   nsIContent* target = aTargetNode;
      81                 :   mTreeBuilder->setFragmentContext(aContextLocalName,
      82                 :                                    aContextNamespace,
      83                 :                                    &target,
      84               0 :                                    aQuirks);
      85                 : 
      86                 : #ifdef DEBUG
      87               0 :   if (!aPreventScriptExecution) {
      88               0 :     NS_ASSERTION(!aTargetNode->IsInDoc(),
      89                 :                  "If script execution isn't prevented, "
      90                 :                  "the target node must not be in doc.");
      91               0 :     nsCOMPtr<nsIDOMDocumentFragment> domFrag = do_QueryInterface(aTargetNode);
      92               0 :     NS_ASSERTION(domFrag,
      93                 :       "If script execution isn't prevented, must parse to DOM fragment.");
      94                 :   }
      95                 : #endif
      96                 : 
      97               0 :   mExecutor->EnableFragmentMode(aPreventScriptExecution);
      98                 : 
      99               0 :   Tokenize(aSourceBuffer, doc, true);
     100               0 :   return NS_OK;
     101                 : }
     102                 : 
     103                 : nsresult
     104             234 : nsHtml5StringParser::ParseDocument(const nsAString& aSourceBuffer,
     105                 :                                    nsIDocument* aTargetDoc,
     106                 :                                    bool aScriptingEnabledForNoscriptParsing)
     107                 : {
     108             234 :   MOZ_ASSERT(!aTargetDoc->GetFirstChild());
     109                 : 
     110             234 :   NS_ENSURE_TRUE(aSourceBuffer.Length() <= PR_INT32_MAX,
     111                 :                  NS_ERROR_OUT_OF_MEMORY);
     112                 : 
     113                 :   mTreeBuilder->setFragmentContext(nsnull,
     114                 :                                    kNameSpaceID_None,
     115                 :                                    nsnull,
     116             234 :                                    false);
     117                 : 
     118             234 :   mExecutor->PreventScriptExecution();
     119                 : 
     120             234 :   Tokenize(aSourceBuffer, aTargetDoc, aScriptingEnabledForNoscriptParsing);
     121             234 :   return NS_OK;
     122                 : }
     123                 : 
     124                 : void
     125             234 : nsHtml5StringParser::Tokenize(const nsAString& aSourceBuffer,
     126                 :                               nsIDocument* aDocument,
     127                 :                               bool aScriptingEnabledForNoscriptParsing) {
     128                 : 
     129             234 :   nsIURI* uri = aDocument->GetDocumentURI();
     130                 : 
     131             234 :   mExecutor->Init(aDocument, uri, nsnull, nsnull);
     132                 : 
     133             234 :   mExecutor->SetParser(this);
     134             234 :   mExecutor->SetNodeInfoManager(aDocument->NodeInfoManager());
     135                 : 
     136             234 :   NS_PRECONDITION(!mExecutor->HasStarted(),
     137                 :                   "Tried to start parse without initializing the parser.");
     138             234 :   mTreeBuilder->setScriptingEnabled(aScriptingEnabledForNoscriptParsing);
     139             234 :   mTokenizer->start();
     140             234 :   mExecutor->Start(); // Don't call WillBuildModel in fragment case
     141             234 :   if (!aSourceBuffer.IsEmpty()) {
     142             234 :     bool lastWasCR = false;
     143             468 :     nsHtml5DependentUTF16Buffer buffer(aSourceBuffer);
     144             702 :     while (buffer.hasMore()) {
     145             234 :       buffer.adjust(lastWasCR);
     146             234 :       lastWasCR = false;
     147             234 :       if (buffer.hasMore()) {
     148             234 :         lastWasCR = mTokenizer->tokenizeBuffer(&buffer);
     149             234 :         if (mTreeBuilder->HasScript()) {
     150                 :           // Flush on each script, because the execution prevention code
     151                 :           // can handle at most one script per flush.
     152               0 :           mTreeBuilder->Flush(); // Move ops to the executor
     153               0 :           mExecutor->FlushDocumentWrite(); // run the ops
     154                 :         }
     155                 :       }
     156                 :     }
     157                 :   }
     158             234 :   mTokenizer->eof();
     159             234 :   mTreeBuilder->StreamEnded();
     160             234 :   mTreeBuilder->Flush();
     161             234 :   mExecutor->FlushDocumentWrite();
     162             234 :   mTokenizer->end();
     163             234 :   mExecutor->DropParserAndPerfHint();
     164             234 :   mExecutor->DropHeldElements();
     165             234 :   mTreeBuilder->DropHandles();
     166             234 :   mAtomTable.Clear();
     167             234 :   mExecutor->Reset();
     168             234 : }

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