Line data    Source code

       1             : /* This Source Code Form is subject to the terms of the Mozilla Public
       2             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       3             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       4             : 
       5             : #include "nsHtml5StringParser.h"
       6             : #include "nsHtml5TreeOpExecutor.h"
       7             : #include "nsHtml5TreeBuilder.h"
       8             : #include "nsHtml5Tokenizer.h"
       9             : #include "nsIContent.h"
      10             : #include "nsIDocument.h"
      11             : #include "nsIDOMDocumentFragment.h"
      12             : #include "nsHtml5DependentUTF16Buffer.h"
      13             : 
      14           0 : NS_IMPL_ISUPPORTS0(nsHtml5StringParser)
      15             : 
      16           0 : nsHtml5StringParser::nsHtml5StringParser()
      17           0 :   : mBuilder(new nsHtml5OplessBuilder())
      18           0 :   , mTreeBuilder(new nsHtml5TreeBuilder(mBuilder))
      19           0 :   , mTokenizer(new nsHtml5Tokenizer(mTreeBuilder, false))
      20             : {
      21           0 :   mTokenizer->setInterner(&mAtomTable);
      22           0 : }
      23             : 
      24           0 : nsHtml5StringParser::~nsHtml5StringParser()
      25             : {
      26           0 : }
      27             : 
      28             : nsresult
      29           0 : nsHtml5StringParser::ParseFragment(const nsAString& aSourceBuffer,
      30             :                                    nsIContent* aTargetNode,
      31             :                                    nsIAtom* aContextLocalName,
      32             :                                    int32_t aContextNamespace,
      33             :                                    bool aQuirks,
      34             :                                    bool aPreventScriptExecution)
      35             : {
      36           0 :   NS_ENSURE_TRUE(aSourceBuffer.Length() <= INT32_MAX,
      37             :                  NS_ERROR_OUT_OF_MEMORY);
      38             : 
      39           0 :   nsIDocument* doc = aTargetNode->OwnerDoc();
      40           0 :   nsIURI* uri = doc->GetDocumentURI();
      41           0 :   NS_ENSURE_TRUE(uri, NS_ERROR_NOT_AVAILABLE);
      42             : 
      43           0 :   mTreeBuilder->setFragmentContext(aContextLocalName,
      44             :                                    aContextNamespace,
      45             :                                    aTargetNode,
      46           0 :                                    aQuirks);
      47             : 
      48             : #ifdef DEBUG
      49           0 :   if (!aPreventScriptExecution) {
      50           0 :     NS_ASSERTION(!aTargetNode->IsInUncomposedDoc(),
      51             :                  "If script execution isn't prevented, "
      52             :                  "the target node must not be in doc.");
      53           0 :     nsCOMPtr<nsIDOMDocumentFragment> domFrag = do_QueryInterface(aTargetNode);
      54           0 :     NS_ASSERTION(domFrag,
      55             :       "If script execution isn't prevented, must parse to DOM fragment.");
      56             :   }
      57             : #endif
      58             : 
      59           0 :   mTreeBuilder->SetPreventScriptExecution(aPreventScriptExecution);
      60             : 
      61           0 :   return Tokenize(aSourceBuffer, doc, true);
      62             : }
      63             : 
      64             : nsresult
      65           0 : nsHtml5StringParser::ParseDocument(const nsAString& aSourceBuffer,
      66             :                                    nsIDocument* aTargetDoc,
      67             :                                    bool aScriptingEnabledForNoscriptParsing)
      68             : {
      69           0 :   MOZ_ASSERT(!aTargetDoc->GetFirstChild());
      70             : 
      71           0 :   NS_ENSURE_TRUE(aSourceBuffer.Length() <= INT32_MAX,
      72             :                  NS_ERROR_OUT_OF_MEMORY);
      73             : 
      74           0 :   mTreeBuilder->setFragmentContext(nullptr,
      75             :                                    kNameSpaceID_None,
      76             :                                    nullptr,
      77           0 :                                    false);
      78             : 
      79           0 :   mTreeBuilder->SetPreventScriptExecution(true);
      80             : 
      81           0 :   return Tokenize(aSourceBuffer, aTargetDoc, aScriptingEnabledForNoscriptParsing);
      82             : }
      83             : 
      84             : nsresult
      85           0 : nsHtml5StringParser::Tokenize(const nsAString& aSourceBuffer,
      86             :                               nsIDocument* aDocument,
      87             :                               bool aScriptingEnabledForNoscriptParsing) {
      88             : 
      89           0 :   nsIURI* uri = aDocument->GetDocumentURI();
      90             : 
      91           0 :   mBuilder->Init(aDocument, uri, nullptr, nullptr);
      92             : 
      93           0 :   mBuilder->SetParser(this);
      94           0 :   mBuilder->SetNodeInfoManager(aDocument->NodeInfoManager());
      95             : 
      96             :   // Mark the parser as *not* broken by passing NS_OK
      97           0 :   nsresult rv = mBuilder->MarkAsBroken(NS_OK);
      98             : 
      99           0 :   mTreeBuilder->setScriptingEnabled(aScriptingEnabledForNoscriptParsing);
     100           0 :   mTreeBuilder->setIsSrcdocDocument(aDocument->IsSrcdocDocument()); 
     101           0 :   mBuilder->Start();
     102           0 :   mTokenizer->start();
     103           0 :   if (!aSourceBuffer.IsEmpty()) {
     104           0 :     bool lastWasCR = false;
     105           0 :     nsHtml5DependentUTF16Buffer buffer(aSourceBuffer);
     106           0 :     while (buffer.hasMore()) {
     107           0 :       buffer.adjust(lastWasCR);
     108           0 :       lastWasCR = false;
     109           0 :       if (buffer.hasMore()) {
     110           0 :         if (!mTokenizer->EnsureBufferSpace(buffer.getLength())) {
     111           0 :           rv = mBuilder->MarkAsBroken(NS_ERROR_OUT_OF_MEMORY);
     112           0 :           break;
     113             :         }
     114           0 :         lastWasCR = mTokenizer->tokenizeBuffer(&buffer);
     115           0 :         if (NS_FAILED(rv = mBuilder->IsBroken())) {
     116           0 :           break;
     117             :         }
     118             :       }
     119             :     }
     120             :   }
     121           0 :   if (NS_SUCCEEDED(rv)) {
     122           0 :     mTokenizer->eof();
     123             :   }
     124           0 :   mTokenizer->end();
     125           0 :   mBuilder->Finish();
     126           0 :   mAtomTable.Clear();
     127           0 :   return rv;
     128             : }