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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsHtml5StringParser.h"
#include "nsHtml5DependentUTF16Buffer.h"
#include "nsHtml5Tokenizer.h"
#include "nsHtml5TreeBuilder.h"
#include "nsHtml5TreeOpExecutor.h"
#include "nsIContent.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/DocumentFragment.h"
using mozilla::dom::Document;
NS_IMPL_ISUPPORTS0(nsHtml5StringParser)
nsHtml5StringParser::nsHtml5StringParser()
: mBuilder(new nsHtml5OplessBuilder()),
mTreeBuilder(new nsHtml5TreeBuilder(mBuilder)),
mTokenizer(new nsHtml5Tokenizer(mTreeBuilder.get(), false)) {
mTokenizer->setInterner(&mAtomTable);
}
nsHtml5StringParser::~nsHtml5StringParser() {}
nsresult nsHtml5StringParser::ParseFragment(
const nsAString& aSourceBuffer, nsIContent* aTargetNode,
nsAtom* aContextLocalName, int32_t aContextNamespace, bool aQuirks,
bool aPreventScriptExecution, bool aAllowDeclarativeShadowRoots) {
NS_ENSURE_TRUE(aSourceBuffer.Length() <= INT32_MAX, NS_ERROR_OUT_OF_MEMORY);
Document* doc = aTargetNode->OwnerDoc();
nsIURI* uri = doc->GetDocumentURI();
NS_ENSURE_TRUE(uri, NS_ERROR_NOT_AVAILABLE);
mTreeBuilder->setFragmentContext(aContextLocalName, aContextNamespace,
aTargetNode, aQuirks);
#ifdef DEBUG
if (!aPreventScriptExecution) {
NS_ASSERTION(!aTargetNode->IsInUncomposedDoc(),
"If script execution isn't prevented, "
"the target node must not be in doc.");
NS_ASSERTION(
aTargetNode->NodeType() == nsINode::DOCUMENT_FRAGMENT_NODE,
"If script execution isn't prevented, must parse to DOM fragment.");
}
#endif
mTreeBuilder->SetPreventScriptExecution(aPreventScriptExecution);
return Tokenize(aSourceBuffer, doc, true, aAllowDeclarativeShadowRoots);
}
nsresult nsHtml5StringParser::ParseDocument(
const nsAString& aSourceBuffer, Document* aTargetDoc,
bool aScriptingEnabledForNoscriptParsing) {
MOZ_ASSERT(!aTargetDoc->GetFirstChild());
NS_ENSURE_TRUE(aSourceBuffer.Length() <= INT32_MAX, NS_ERROR_OUT_OF_MEMORY);
mTreeBuilder->setFragmentContext(nullptr, kNameSpaceID_None, nullptr, false);
mTreeBuilder->SetPreventScriptExecution(true);
return Tokenize(aSourceBuffer, aTargetDoc,
aScriptingEnabledForNoscriptParsing,
aTargetDoc->AllowsDeclarativeShadowRoots());
}
nsresult nsHtml5StringParser::Tokenize(const nsAString& aSourceBuffer,
Document* aDocument,
bool aScriptingEnabledForNoscriptParsing,
bool aDeclarativeShadowRootsAllowed) {
nsIURI* uri = aDocument->GetDocumentURI();
mBuilder->Init(aDocument, uri, nullptr, nullptr);
mBuilder->SetParser(this);
mBuilder->SetNodeInfoManager(aDocument->NodeInfoManager());
// Mark the parser as *not* broken by passing NS_OK
nsresult rv = mBuilder->MarkAsBroken(NS_OK);
mTreeBuilder->setScriptingEnabled(aScriptingEnabledForNoscriptParsing);
mTreeBuilder->setIsSrcdocDocument(aDocument->IsSrcdocDocument());
mTreeBuilder->setAllowDeclarativeShadowRoots(aDeclarativeShadowRootsAllowed);
mBuilder->Start();
mTokenizer->start();
if (!aSourceBuffer.IsEmpty()) {
bool lastWasCR = false;
nsHtml5DependentUTF16Buffer buffer(aSourceBuffer);
while (buffer.hasMore()) {
buffer.adjust(lastWasCR);
lastWasCR = false;
if (buffer.hasMore()) {
if (!mTokenizer->EnsureBufferSpace(buffer.getLength())) {
rv = mBuilder->MarkAsBroken(NS_ERROR_OUT_OF_MEMORY);
break;
}
lastWasCR = mTokenizer->tokenizeBuffer(&buffer);
if (NS_FAILED(rv = mBuilder->IsBroken())) {
break;
}
}
}
}
if (NS_SUCCEEDED(rv)) {
mTokenizer->eof();
}
mTokenizer->end();
mBuilder->Finish();
mAtomTable.Clear();
return rv;
}