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HTMLTokenizer.cpp
1451 lines (1338 loc) · 50.9 KB
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HTMLTokenizer.cpp
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/*
* Copyright (C) 2008-2016 Apple Inc. All Rights Reserved.
* Copyright (C) 2009 Torch Mobile, Inc. http://www.torchmobile.com/
* Copyright (C) 2010 Google, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "HTMLTokenizer.h"
#include "HTMLEntityParser.h"
#include "HTMLNames.h"
#include "MarkupTokenizerInlines.h"
#include <wtf/text/StringBuilder.h>
namespace WebCore {
using namespace HTMLNames;
static inline LChar convertASCIIAlphaToLower(UChar character)
{
ASSERT(isASCIIAlpha(character));
return toASCIILowerUnchecked(character);
}
inline bool HTMLTokenizer::inEndTagBufferingState() const
{
switch (m_state) {
case RCDATAEndTagOpenState:
case RCDATAEndTagNameState:
case RAWTEXTEndTagOpenState:
case RAWTEXTEndTagNameState:
case ScriptDataEndTagOpenState:
case ScriptDataEndTagNameState:
case ScriptDataEscapedEndTagOpenState:
case ScriptDataEscapedEndTagNameState:
return true;
default:
return false;
}
}
HTMLTokenizer::HTMLTokenizer(const HTMLParserOptions& options)
: m_preprocessor(*this)
, m_options(options)
{
}
inline void HTMLTokenizer::bufferASCIICharacter(UChar character)
{
ASSERT(character != kEndOfFileMarker);
ASSERT(isASCII(character));
LChar narrowedCharacter = character;
m_token.appendToCharacter(narrowedCharacter);
}
inline void HTMLTokenizer::bufferCharacter(UChar character)
{
ASSERT(character != kEndOfFileMarker);
m_token.appendToCharacter(character);
}
template<typename CharacterType>
inline void HTMLTokenizer::bufferCharacters(Span<const CharacterType> characters)
{
#if ASSERT_ENABLED
for (auto character : characters)
ASSERT(character != kEndOfFileMarker);
#endif
m_token.appendToCharacter(characters);
}
inline bool HTMLTokenizer::emitAndResumeInDataState(SegmentedString& source)
{
saveEndTagNameIfNeeded();
m_state = DataState;
source.advancePastNonNewline();
return true;
}
inline bool HTMLTokenizer::emitAndReconsumeInDataState()
{
saveEndTagNameIfNeeded();
m_state = DataState;
return true;
}
inline bool HTMLTokenizer::emitEndOfFile(SegmentedString& source)
{
m_state = DataState;
if (haveBufferedCharacterToken())
return true;
source.advance();
m_token.clear();
m_token.makeEndOfFile();
return true;
}
inline void HTMLTokenizer::saveEndTagNameIfNeeded()
{
ASSERT(m_token.type() != HTMLToken::Type::Uninitialized);
if (m_token.type() == HTMLToken::Type::StartTag)
m_appropriateEndTagName = m_token.name();
}
inline bool HTMLTokenizer::haveBufferedCharacterToken() const
{
return m_token.type() == HTMLToken::Type::Character;
}
inline bool HTMLTokenizer::processEntity(SegmentedString& source)
{
bool notEnoughCharacters = false;
StringBuilder decodedEntity;
bool success = consumeHTMLEntity(source, decodedEntity, notEnoughCharacters);
if (notEnoughCharacters)
return false;
if (!success) {
ASSERT(decodedEntity.isEmpty());
bufferASCIICharacter('&');
} else {
if (decodedEntity.is8Bit())
bufferCharacters(decodedEntity.span<LChar>());
else
bufferCharacters(decodedEntity.span<UChar>());
}
return true;
}
void HTMLTokenizer::flushBufferedEndTag()
{
m_token.beginEndTag(m_bufferedEndTagName);
m_bufferedEndTagName.clear();
m_appropriateEndTagName.clear();
m_temporaryBuffer.clear();
}
bool HTMLTokenizer::commitToPartialEndTag(SegmentedString& source, UChar character, State state)
{
ASSERT(source.currentCharacter() == character);
appendToTemporaryBuffer(character);
source.advance();
if (haveBufferedCharacterToken()) {
// Emit the buffered character token.
// The next call to processToken will flush the buffered end tag and continue parsing it.
m_state = state;
return true;
}
flushBufferedEndTag();
return false;
}
bool HTMLTokenizer::commitToCompleteEndTag(SegmentedString& source)
{
ASSERT(source.currentCharacter() == '>');
appendToTemporaryBuffer('>');
source.advancePastNonNewline();
m_state = DataState;
if (haveBufferedCharacterToken()) {
// Emit the character token we already have.
// The next call to processToken will flush the buffered end tag and emit it.
return true;
}
flushBufferedEndTag();
return true;
}
bool HTMLTokenizer::processToken(SegmentedString& source)
{
if (!m_bufferedEndTagName.isEmpty() && !inEndTagBufferingState()) {
// We are back here after emitting a character token that came just before an end tag.
// To continue parsing the end tag we need to move the buffered tag name into the token.
flushBufferedEndTag();
// If we are in the data state, the end tag is already complete and we should emit it
// now, otherwise, we want to resume parsing the partial end tag.
if (m_state == DataState)
return true;
}
if (!m_preprocessor.peek(source, isNullCharacterSkippingState(m_state)))
return haveBufferedCharacterToken();
UChar character = m_preprocessor.nextInputCharacter();
// https://html.spec.whatwg.org/#tokenization
switch (m_state) {
BEGIN_STATE(DataState)
if (character == '&')
ADVANCE_PAST_NON_NEWLINE_TO(CharacterReferenceInDataState);
if (character == '<') {
if (haveBufferedCharacterToken())
RETURN_IN_CURRENT_STATE(true);
ADVANCE_PAST_NON_NEWLINE_TO(TagOpenState);
}
if (character == kEndOfFileMarker)
return emitEndOfFile(source);
bufferCharacter(character);
ADVANCE_TO(DataState);
END_STATE()
BEGIN_STATE(CharacterReferenceInDataState)
if (!processEntity(source))
RETURN_IN_CURRENT_STATE(haveBufferedCharacterToken());
SWITCH_TO(DataState);
END_STATE()
BEGIN_STATE(RCDATAState)
if (character == '&')
ADVANCE_PAST_NON_NEWLINE_TO(CharacterReferenceInRCDATAState);
if (character == '<')
ADVANCE_PAST_NON_NEWLINE_TO(RCDATALessThanSignState);
if (character == kEndOfFileMarker)
RECONSUME_IN(DataState);
bufferCharacter(character);
ADVANCE_TO(RCDATAState);
END_STATE()
BEGIN_STATE(CharacterReferenceInRCDATAState)
if (!processEntity(source))
RETURN_IN_CURRENT_STATE(haveBufferedCharacterToken());
SWITCH_TO(RCDATAState);
END_STATE()
BEGIN_STATE(RAWTEXTState)
if (character == '<')
ADVANCE_PAST_NON_NEWLINE_TO(RAWTEXTLessThanSignState);
if (character == kEndOfFileMarker)
RECONSUME_IN(DataState);
bufferCharacter(character);
ADVANCE_TO(RAWTEXTState);
END_STATE()
BEGIN_STATE(ScriptDataState)
if (character == '<')
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataLessThanSignState);
if (character == kEndOfFileMarker)
RECONSUME_IN(DataState);
bufferCharacter(character);
ADVANCE_TO(ScriptDataState);
END_STATE()
BEGIN_STATE(PLAINTEXTState)
if (character == kEndOfFileMarker)
RECONSUME_IN(DataState);
bufferCharacter(character);
ADVANCE_TO(PLAINTEXTState);
END_STATE()
BEGIN_STATE(TagOpenState)
if (character == '!')
ADVANCE_PAST_NON_NEWLINE_TO(MarkupDeclarationOpenState);
if (character == '/')
ADVANCE_PAST_NON_NEWLINE_TO(EndTagOpenState);
if (isASCIIAlpha(character)) {
m_token.beginStartTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(TagNameState);
}
if (character == '?') {
parseError();
// The spec consumes the current character before switching
// to the bogus comment state, but it's easier to implement
// if we reconsume the current character.
RECONSUME_IN(BogusCommentState);
}
parseError();
bufferASCIICharacter('<');
RECONSUME_IN(DataState);
END_STATE()
BEGIN_STATE(EndTagOpenState)
if (isASCIIAlpha(character)) {
m_token.beginEndTag(convertASCIIAlphaToLower(character));
m_appropriateEndTagName.clear();
ADVANCE_PAST_NON_NEWLINE_TO(TagNameState);
}
if (character == '>') {
parseError();
ADVANCE_PAST_NON_NEWLINE_TO(DataState);
}
if (character == kEndOfFileMarker) {
parseError();
bufferCharacters("</"_s);
RECONSUME_IN(DataState);
}
parseError();
RECONSUME_IN(BogusCommentState);
END_STATE()
BEGIN_STATE(TagNameState)
if (isTokenizerWhitespace(character))
ADVANCE_TO(BeforeAttributeNameState);
if (character == '/')
ADVANCE_PAST_NON_NEWLINE_TO(SelfClosingStartTagState);
if (character == '>')
return emitAndResumeInDataState(source);
if (m_options.usePreHTML5ParserQuirks && character == '<')
return emitAndReconsumeInDataState();
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
m_token.appendToName(toASCIILower(character));
ADVANCE_PAST_NON_NEWLINE_TO(TagNameState);
END_STATE()
BEGIN_STATE(RCDATALessThanSignState)
if (character == '/') {
m_temporaryBuffer.clear();
ASSERT(m_bufferedEndTagName.isEmpty());
ADVANCE_PAST_NON_NEWLINE_TO(RCDATAEndTagOpenState);
}
bufferASCIICharacter('<');
RECONSUME_IN(RCDATAState);
END_STATE()
BEGIN_STATE(RCDATAEndTagOpenState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(RCDATAEndTagNameState);
}
bufferCharacters("</"_s);
RECONSUME_IN(RCDATAState);
END_STATE()
BEGIN_STATE(RCDATAEndTagNameState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(RCDATAEndTagNameState);
}
if (isTokenizerWhitespace(character)) {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, character, BeforeAttributeNameState))
return true;
SWITCH_TO(BeforeAttributeNameState);
}
} else if (character == '/') {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, '/', SelfClosingStartTagState))
return true;
SWITCH_TO(SelfClosingStartTagState);
}
} else if (character == '>') {
if (isAppropriateEndTag())
return commitToCompleteEndTag(source);
}
bufferCharacters("</"_s);
m_token.appendToCharacter(m_temporaryBuffer);
m_bufferedEndTagName.clear();
m_temporaryBuffer.clear();
RECONSUME_IN(RCDATAState);
END_STATE()
BEGIN_STATE(RAWTEXTLessThanSignState)
if (character == '/') {
m_temporaryBuffer.clear();
ASSERT(m_bufferedEndTagName.isEmpty());
ADVANCE_PAST_NON_NEWLINE_TO(RAWTEXTEndTagOpenState);
}
bufferASCIICharacter('<');
RECONSUME_IN(RAWTEXTState);
END_STATE()
BEGIN_STATE(RAWTEXTEndTagOpenState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(RAWTEXTEndTagNameState);
}
bufferCharacters("</"_s);
RECONSUME_IN(RAWTEXTState);
END_STATE()
BEGIN_STATE(RAWTEXTEndTagNameState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(RAWTEXTEndTagNameState);
}
if (isTokenizerWhitespace(character)) {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, character, BeforeAttributeNameState))
return true;
SWITCH_TO(BeforeAttributeNameState);
}
} else if (character == '/') {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, '/', SelfClosingStartTagState))
return true;
SWITCH_TO(SelfClosingStartTagState);
}
} else if (character == '>') {
if (isAppropriateEndTag())
return commitToCompleteEndTag(source);
}
bufferCharacters("</"_s);
m_token.appendToCharacter(m_temporaryBuffer);
m_bufferedEndTagName.clear();
m_temporaryBuffer.clear();
RECONSUME_IN(RAWTEXTState);
END_STATE()
BEGIN_STATE(ScriptDataLessThanSignState)
if (character == '/') {
m_temporaryBuffer.clear();
ASSERT(m_bufferedEndTagName.isEmpty());
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEndTagOpenState);
}
if (character == '!') {
bufferCharacters("<!"_s);
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapeStartState);
}
bufferASCIICharacter('<');
RECONSUME_IN(ScriptDataState);
END_STATE()
BEGIN_STATE(ScriptDataEndTagOpenState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEndTagNameState);
}
bufferCharacters("</"_s);
RECONSUME_IN(ScriptDataState);
END_STATE()
BEGIN_STATE(ScriptDataEndTagNameState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEndTagNameState);
}
if (isTokenizerWhitespace(character)) {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, character, BeforeAttributeNameState))
return true;
SWITCH_TO(BeforeAttributeNameState);
}
} else if (character == '/') {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, '/', SelfClosingStartTagState))
return true;
SWITCH_TO(SelfClosingStartTagState);
}
} else if (character == '>') {
if (isAppropriateEndTag())
return commitToCompleteEndTag(source);
}
bufferCharacters("</"_s);
m_token.appendToCharacter(m_temporaryBuffer);
m_bufferedEndTagName.clear();
m_temporaryBuffer.clear();
RECONSUME_IN(ScriptDataState);
END_STATE()
BEGIN_STATE(ScriptDataEscapeStartState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapeStartDashState);
} else
RECONSUME_IN(ScriptDataState);
END_STATE()
BEGIN_STATE(ScriptDataEscapeStartDashState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedDashDashState);
} else
RECONSUME_IN(ScriptDataState);
END_STATE()
BEGIN_STATE(ScriptDataEscapedState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedDashState);
}
if (character == '<')
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedLessThanSignState);
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
bufferCharacter(character);
ADVANCE_TO(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataEscapedDashState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedDashDashState);
}
if (character == '<')
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedLessThanSignState);
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
bufferCharacter(character);
ADVANCE_TO(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataEscapedDashDashState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedDashDashState);
}
if (character == '<')
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedLessThanSignState);
if (character == '>') {
bufferASCIICharacter('>');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataState);
}
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
bufferCharacter(character);
ADVANCE_TO(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataEscapedLessThanSignState)
if (character == '/') {
m_temporaryBuffer.clear();
ASSERT(m_bufferedEndTagName.isEmpty());
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedEndTagOpenState);
}
if (isASCIIAlpha(character)) {
bufferASCIICharacter('<');
bufferASCIICharacter(character);
m_temporaryBuffer.clear();
appendToTemporaryBuffer(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapeStartState);
}
bufferASCIICharacter('<');
RECONSUME_IN(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataEscapedEndTagOpenState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedEndTagNameState);
}
bufferCharacters("</"_s);
RECONSUME_IN(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataEscapedEndTagNameState)
if (isASCIIAlpha(character)) {
appendToTemporaryBuffer(character);
appendToPossibleEndTag(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataEscapedEndTagNameState);
}
if (isTokenizerWhitespace(character)) {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, character, BeforeAttributeNameState))
return true;
SWITCH_TO(BeforeAttributeNameState);
}
} else if (character == '/') {
if (isAppropriateEndTag()) {
if (commitToPartialEndTag(source, '/', SelfClosingStartTagState))
return true;
SWITCH_TO(SelfClosingStartTagState);
}
} else if (character == '>') {
if (isAppropriateEndTag())
return commitToCompleteEndTag(source);
}
bufferCharacters("</"_s);
m_token.appendToCharacter(m_temporaryBuffer);
m_bufferedEndTagName.clear();
m_temporaryBuffer.clear();
RECONSUME_IN(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataDoubleEscapeStartState)
if (isTokenizerWhitespace(character) || character == '/' || character == '>') {
bufferASCIICharacter(character);
if (temporaryBufferIs("script"_s))
ADVANCE_TO(ScriptDataDoubleEscapedState);
else
ADVANCE_TO(ScriptDataEscapedState);
}
if (isASCIIAlpha(character)) {
bufferASCIICharacter(character);
appendToTemporaryBuffer(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapeStartState);
}
RECONSUME_IN(ScriptDataEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataDoubleEscapedState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapedDashState);
}
if (character == '<') {
bufferASCIICharacter('<');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapedLessThanSignState);
}
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
bufferCharacter(character);
ADVANCE_TO(ScriptDataDoubleEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataDoubleEscapedDashState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapedDashDashState);
}
if (character == '<') {
bufferASCIICharacter('<');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapedLessThanSignState);
}
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
bufferCharacter(character);
ADVANCE_TO(ScriptDataDoubleEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataDoubleEscapedDashDashState)
if (character == '-') {
bufferASCIICharacter('-');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapedDashDashState);
}
if (character == '<') {
bufferASCIICharacter('<');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapedLessThanSignState);
}
if (character == '>') {
bufferASCIICharacter('>');
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataState);
}
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
bufferCharacter(character);
ADVANCE_TO(ScriptDataDoubleEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataDoubleEscapedLessThanSignState)
if (character == '/') {
bufferASCIICharacter('/');
m_temporaryBuffer.clear();
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapeEndState);
}
RECONSUME_IN(ScriptDataDoubleEscapedState);
END_STATE()
BEGIN_STATE(ScriptDataDoubleEscapeEndState)
if (isTokenizerWhitespace(character) || character == '/' || character == '>') {
bufferASCIICharacter(character);
if (temporaryBufferIs("script"_s))
ADVANCE_TO(ScriptDataEscapedState);
else
ADVANCE_TO(ScriptDataDoubleEscapedState);
}
if (isASCIIAlpha(character)) {
bufferASCIICharacter(character);
appendToTemporaryBuffer(convertASCIIAlphaToLower(character));
ADVANCE_PAST_NON_NEWLINE_TO(ScriptDataDoubleEscapeEndState);
}
RECONSUME_IN(ScriptDataDoubleEscapedState);
END_STATE()
BEGIN_STATE(BeforeAttributeNameState)
if (isTokenizerWhitespace(character))
ADVANCE_TO(BeforeAttributeNameState);
if (character == '/')
ADVANCE_PAST_NON_NEWLINE_TO(SelfClosingStartTagState);
if (character == '>')
return emitAndResumeInDataState(source);
if (m_options.usePreHTML5ParserQuirks && character == '<')
return emitAndReconsumeInDataState();
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
if (character == '"' || character == '\'' || character == '<' || character == '=')
parseError();
m_token.beginAttribute();
m_token.appendToAttributeName(toASCIILower(character));
ADVANCE_PAST_NON_NEWLINE_TO(AttributeNameState);
END_STATE()
BEGIN_STATE(AttributeNameState)
if (isTokenizerWhitespace(character))
ADVANCE_TO(AfterAttributeNameState);
if (character == '/')
ADVANCE_PAST_NON_NEWLINE_TO(SelfClosingStartTagState);
if (character == '=')
ADVANCE_PAST_NON_NEWLINE_TO(BeforeAttributeValueState);
if (character == '>')
return emitAndResumeInDataState(source);
if (m_options.usePreHTML5ParserQuirks && character == '<')
return emitAndReconsumeInDataState();
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
if (character == '"' || character == '\'' || character == '<' || character == '=')
parseError();
m_token.appendToAttributeName(toASCIILower(character));
ADVANCE_PAST_NON_NEWLINE_TO(AttributeNameState);
END_STATE()
BEGIN_STATE(AfterAttributeNameState)
if (isTokenizerWhitespace(character))
ADVANCE_TO(AfterAttributeNameState);
if (character == '/')
ADVANCE_PAST_NON_NEWLINE_TO(SelfClosingStartTagState);
if (character == '=')
ADVANCE_PAST_NON_NEWLINE_TO(BeforeAttributeValueState);
if (character == '>')
return emitAndResumeInDataState(source);
if (m_options.usePreHTML5ParserQuirks && character == '<')
return emitAndReconsumeInDataState();
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
if (character == '"' || character == '\'' || character == '<')
parseError();
m_token.beginAttribute();
m_token.appendToAttributeName(toASCIILower(character));
ADVANCE_PAST_NON_NEWLINE_TO(AttributeNameState);
END_STATE()
BEGIN_STATE(BeforeAttributeValueState)
if (isTokenizerWhitespace(character))
ADVANCE_TO(BeforeAttributeValueState);
if (character == '"')
ADVANCE_PAST_NON_NEWLINE_TO(AttributeValueDoubleQuotedState);
if (character == '&')
RECONSUME_IN(AttributeValueUnquotedState);
if (character == '\'')
ADVANCE_PAST_NON_NEWLINE_TO(AttributeValueSingleQuotedState);
if (character == '>') {
parseError();
return emitAndResumeInDataState(source);
}
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
if (character == '<' || character == '=' || character == '`')
parseError();
m_token.appendToAttributeValue(character);
ADVANCE_PAST_NON_NEWLINE_TO(AttributeValueUnquotedState);
END_STATE()
BEGIN_STATE(AttributeValueDoubleQuotedState)
if (character == '"') {
m_token.endAttribute();
ADVANCE_PAST_NON_NEWLINE_TO(AfterAttributeValueQuotedState);
}
if (character == '&') {
m_additionalAllowedCharacter = '"';
ADVANCE_PAST_NON_NEWLINE_TO(CharacterReferenceInAttributeValueState);
}
if (character == kEndOfFileMarker) {
parseError();
m_token.endAttribute();
RECONSUME_IN(DataState);
}
m_token.appendToAttributeValue(character);
ADVANCE_TO(AttributeValueDoubleQuotedState);
END_STATE()
BEGIN_STATE(AttributeValueSingleQuotedState)
if (character == '\'') {
m_token.endAttribute();
ADVANCE_PAST_NON_NEWLINE_TO(AfterAttributeValueQuotedState);
}
if (character == '&') {
m_additionalAllowedCharacter = '\'';
ADVANCE_PAST_NON_NEWLINE_TO(CharacterReferenceInAttributeValueState);
}
if (character == kEndOfFileMarker) {
parseError();
m_token.endAttribute();
RECONSUME_IN(DataState);
}
m_token.appendToAttributeValue(character);
ADVANCE_TO(AttributeValueSingleQuotedState);
END_STATE()
BEGIN_STATE(AttributeValueUnquotedState)
if (isTokenizerWhitespace(character)) {
m_token.endAttribute();
ADVANCE_TO(BeforeAttributeNameState);
}
if (character == '&') {
m_additionalAllowedCharacter = '>';
ADVANCE_PAST_NON_NEWLINE_TO(CharacterReferenceInAttributeValueState);
}
if (character == '>') {
m_token.endAttribute();
return emitAndResumeInDataState(source);
}
if (character == kEndOfFileMarker) {
parseError();
m_token.endAttribute();
RECONSUME_IN(DataState);
}
if (character == '"' || character == '\'' || character == '<' || character == '=' || character == '`')
parseError();
m_token.appendToAttributeValue(character);
ADVANCE_PAST_NON_NEWLINE_TO(AttributeValueUnquotedState);
END_STATE()
BEGIN_STATE(CharacterReferenceInAttributeValueState)
bool notEnoughCharacters = false;
StringBuilder decodedEntity;
bool success = consumeHTMLEntity(source, decodedEntity, notEnoughCharacters, m_additionalAllowedCharacter);
if (notEnoughCharacters)
RETURN_IN_CURRENT_STATE(haveBufferedCharacterToken());
if (!success) {
ASSERT(decodedEntity.isEmpty());
m_token.appendToAttributeValue('&');
} else {
if (decodedEntity.is8Bit())
m_token.appendToAttributeValue(decodedEntity.span<LChar>());
else
m_token.appendToAttributeValue(decodedEntity.span<UChar>());
}
// We're supposed to switch back to the attribute value state that
// we were in when we were switched into this state. Rather than
// keeping track of this explictly, we observe that the previous
// state can be determined by m_additionalAllowedCharacter.
if (m_additionalAllowedCharacter == '"')
SWITCH_TO(AttributeValueDoubleQuotedState);
if (m_additionalAllowedCharacter == '\'')
SWITCH_TO(AttributeValueSingleQuotedState);
ASSERT(m_additionalAllowedCharacter == '>');
SWITCH_TO(AttributeValueUnquotedState);
END_STATE()
BEGIN_STATE(AfterAttributeValueQuotedState)
if (isTokenizerWhitespace(character))
ADVANCE_TO(BeforeAttributeNameState);
if (character == '/')
ADVANCE_PAST_NON_NEWLINE_TO(SelfClosingStartTagState);
if (character == '>')
return emitAndResumeInDataState(source);
if (m_options.usePreHTML5ParserQuirks && character == '<')
return emitAndReconsumeInDataState();
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
parseError();
RECONSUME_IN(BeforeAttributeNameState);
END_STATE()
BEGIN_STATE(SelfClosingStartTagState)
if (character == '>') {
m_token.setSelfClosing();
return emitAndResumeInDataState(source);
}
if (character == kEndOfFileMarker) {
parseError();
RECONSUME_IN(DataState);
}
parseError();
RECONSUME_IN(BeforeAttributeNameState);
END_STATE()
BEGIN_STATE(BogusCommentState)
m_token.beginComment();
RECONSUME_IN(ContinueBogusCommentState);
END_STATE()
BEGIN_STATE(ContinueBogusCommentState)
if (character == '>')
return emitAndResumeInDataState(source);
if (character == kEndOfFileMarker)
return emitAndReconsumeInDataState();
m_token.appendToComment(character);
ADVANCE_TO(ContinueBogusCommentState);
END_STATE()
BEGIN_STATE(MarkupDeclarationOpenState)
if (character == '-') {
auto result = source.advancePast("--");
if (result == SegmentedString::DidMatch) {
m_token.beginComment();
SWITCH_TO(CommentStartState);
}
if (result == SegmentedString::NotEnoughCharacters)
RETURN_IN_CURRENT_STATE(haveBufferedCharacterToken());
} else if (isASCIIAlphaCaselessEqual(character, 'd')) {
auto result = source.advancePastLettersIgnoringASCIICase("doctype");
if (result == SegmentedString::DidMatch)
SWITCH_TO(DOCTYPEState);
if (result == SegmentedString::NotEnoughCharacters)
RETURN_IN_CURRENT_STATE(haveBufferedCharacterToken());
} else if (character == '[' && shouldAllowCDATA()) {
auto result = source.advancePast("[CDATA[");
if (result == SegmentedString::DidMatch)
SWITCH_TO(CDATASectionState);
if (result == SegmentedString::NotEnoughCharacters)
RETURN_IN_CURRENT_STATE(haveBufferedCharacterToken());
}
parseError();
RECONSUME_IN(BogusCommentState);
END_STATE()
BEGIN_STATE(CommentStartState)
if (character == '-')
ADVANCE_PAST_NON_NEWLINE_TO(CommentStartDashState);
if (character == '>') {
parseError();
return emitAndResumeInDataState(source);
}
if (character == kEndOfFileMarker) {
parseError();
return emitAndReconsumeInDataState();
}
m_token.appendToComment(character);
ADVANCE_TO(CommentState);
END_STATE()
BEGIN_STATE(CommentStartDashState)
if (character == '-')
ADVANCE_PAST_NON_NEWLINE_TO(CommentEndState);
if (character == '>') {
parseError();
return emitAndResumeInDataState(source);
}
if (character == kEndOfFileMarker) {
parseError();
return emitAndReconsumeInDataState();
}
m_token.appendToComment('-');
m_token.appendToComment(character);
ADVANCE_TO(CommentState);
END_STATE()
BEGIN_STATE(CommentState)
if (character == '-')
ADVANCE_PAST_NON_NEWLINE_TO(CommentEndDashState);
if (character == kEndOfFileMarker) {
parseError();
return emitAndReconsumeInDataState();
}
m_token.appendToComment(character);
ADVANCE_TO(CommentState);
END_STATE()
BEGIN_STATE(CommentEndDashState)
if (character == '-')
ADVANCE_PAST_NON_NEWLINE_TO(CommentEndState);
if (character == kEndOfFileMarker) {
parseError();
return emitAndReconsumeInDataState();
}
m_token.appendToComment('-');
m_token.appendToComment(character);
ADVANCE_TO(CommentState);
END_STATE()
BEGIN_STATE(CommentEndState)
if (character == '>')
return emitAndResumeInDataState(source);