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LibWeb: A whole bunch of work towards spec-compliant <script> elements

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This is still very unfinished, but there's at least a skeleton of code.
This commit is contained in:
Andreas Kling 2020-05-24 22:00:46 +02:00
parent 3a30180e1e
commit 45da08a1e6
8 changed files with 365 additions and 34 deletions
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167
Libraries/LibWeb/Parser/HTMLTokenizer.cpp
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@ -38,22 +38,28 @@
ASSERT_NOT_REACHED(); \
} while (0)
#define SWITCH_TO(new_state) \
will_switch_to(State::new_state); \
m_state = State::new_state; \
current_input_character = next_codepoint(); \
goto new_state;
#define SWITCH_TO(new_state) \
do { \
will_switch_to(State::new_state); \
m_state = State::new_state; \
current_input_character = next_codepoint(); \
goto new_state; \
} while (0)
#define RECONSUME_IN(new_state) \
will_reconsume_in(State::new_state); \
m_state = State::new_state; \
goto new_state;
#define RECONSUME_IN(new_state) \
do { \
will_reconsume_in(State::new_state); \
m_state = State::new_state; \
goto new_state; \
} while (0)
#define SWITCH_TO_AND_EMIT_CURRENT_TOKEN(new_state) \
will_switch_to(State::new_state); \
m_state = State::new_state; \
will_emit(m_current_token); \
return m_current_token;
do { \
will_switch_to(State::new_state); \
m_state = State::new_state; \
will_emit(m_current_token); \
return m_current_token; \
} while (0)
#define DONT_CONSUME_NEXT_INPUT_CHARACTER --m_cursor;
@ -77,23 +83,29 @@
#define ANYTHING_ELSE if (1)
#define EMIT_EOF \
if (m_has_emitted_eof) \
return {}; \
m_has_emitted_eof = true; \
create_new_token(HTMLToken::Type::EndOfFile); \
will_emit(m_current_token); \
return m_current_token;
#define EMIT_EOF \
do { \
if (m_has_emitted_eof) \
return {}; \
m_has_emitted_eof = true; \
create_new_token(HTMLToken::Type::EndOfFile); \
will_emit(m_current_token); \
return m_current_token; \
} while (0)
#define EMIT_CURRENT_TOKEN \
will_emit(m_current_token); \
return m_current_token;
#define EMIT_CURRENT_TOKEN \
do { \
will_emit(m_current_token); \
return m_current_token; \
} while (0)
#define EMIT_CHARACTER(codepoint) \
create_new_token(HTMLToken::Type::Character); \
m_current_token.m_comment_or_character.data.append(codepoint); \
will_emit(m_current_token); \
return m_current_token;
#define EMIT_CHARACTER(codepoint) \
do { \
create_new_token(HTMLToken::Type::Character); \
m_current_token.m_comment_or_character.data.append(codepoint); \
will_emit(m_current_token); \
return m_current_token; \
} while (0)
#define EMIT_CURRENT_CHARACTER \
EMIT_CHARACTER(current_input_character.value());
@ -915,8 +927,104 @@ Optional<HTMLToken> HTMLTokenizer::next_token()
}
END_STATE
BEGIN_STATE(ScriptData)
{
ON('<')
{
SWITCH_TO(ScriptDataLessThanSign);
}
ON(0)
{
TODO();
}
ON_EOF
{
EMIT_EOF;
}
ANYTHING_ELSE
{
EMIT_CURRENT_CHARACTER;
}
}
END_STATE
BEGIN_STATE(ScriptDataLessThanSign)
{
ON('/')
{
m_temporary_buffer.clear();
SWITCH_TO(ScriptDataEndTagOpen);
}
ON('!')
{
TODO();
}
ANYTHING_ELSE
{
EMIT_CHARACTER('<');
RECONSUME_IN(ScriptData);
}
}
END_STATE
BEGIN_STATE(ScriptDataEndTagOpen)
{
ON_ASCII_ALPHA
{
create_new_token(HTMLToken::Type::EndTag);
RECONSUME_IN(ScriptDataEndTagName);
}
ANYTHING_ELSE
{
TODO();
}
}
END_STATE
BEGIN_STATE(ScriptDataEndTagName)
{
ON_WHITESPACE
{
if (current_end_tag_token_is_appropriate())
SWITCH_TO(BeforeAttributeName);
// FIXME: Otherwise, treat it as per the "anything else" entry below.
TODO();
}
ON('/')
{
if (current_end_tag_token_is_appropriate())
SWITCH_TO(SelfClosingStartTag);
// FIXME: Otherwise, treat it as per the "anything else" entry below.
TODO();
}
ON('>')
{
if (current_end_tag_token_is_appropriate())
SWITCH_TO_AND_EMIT_CURRENT_TOKEN(Data);
// FIXME: Otherwise, treat it as per the "anything else" entry below.
TODO();
}
ON_ASCII_UPPER_ALPHA
{
m_current_token.m_tag.tag_name.append(tolower(current_input_character.value()));
m_temporary_buffer.append(current_input_character.value());
continue;
}
ON_ASCII_LOWER_ALPHA
{
m_current_token.m_tag.tag_name.append(current_input_character.value());
m_temporary_buffer.append(current_input_character.value());
continue;
}
ANYTHING_ELSE
{
TODO();
}
}
END_STATE
default:
ASSERT_NOT_REACHED();
TODO();
}
}
}
@ -986,5 +1094,4 @@ bool HTMLTokenizer::current_end_tag_token_is_appropriate() const
return false;
return m_current_token.tag_name() == m_last_emitted_start_tag.tag_name();
}
}