5d180d1f99
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED) Since all of these checks are done in release builds as well, let's rename them to VERIFY to prevent confusion, as everyone is used to assertions being compiled out in release. We can introduce a new ASSERT macro that is specifically for debug checks, but I'm doing this wholesale conversion first since we've accumulated thousands of these already, and it's not immediately obvious which ones are suitable for ASSERT.
190 lines
9.3 KiB
C++
190 lines
9.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Queue.h>
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#include <AK/StringView.h>
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#include <AK/Types.h>
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#include <AK/Utf8View.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/Parser/HTMLToken.h>
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namespace Web::HTML {
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#define ENUMERATE_TOKENIZER_STATES \
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__ENUMERATE_TOKENIZER_STATE(Data) \
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__ENUMERATE_TOKENIZER_STATE(RCDATA) \
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__ENUMERATE_TOKENIZER_STATE(RAWTEXT) \
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__ENUMERATE_TOKENIZER_STATE(ScriptData) \
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__ENUMERATE_TOKENIZER_STATE(PLAINTEXT) \
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__ENUMERATE_TOKENIZER_STATE(TagOpen) \
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__ENUMERATE_TOKENIZER_STATE(EndTagOpen) \
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__ENUMERATE_TOKENIZER_STATE(TagName) \
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__ENUMERATE_TOKENIZER_STATE(RCDATALessThanSign) \
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__ENUMERATE_TOKENIZER_STATE(RCDATAEndTagOpen) \
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__ENUMERATE_TOKENIZER_STATE(RCDATAEndTagName) \
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__ENUMERATE_TOKENIZER_STATE(RAWTEXTLessThanSign) \
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__ENUMERATE_TOKENIZER_STATE(RAWTEXTEndTagOpen) \
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__ENUMERATE_TOKENIZER_STATE(RAWTEXTEndTagName) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataLessThanSign) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEndTagOpen) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEndTagName) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapeStart) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapeStartDash) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscaped) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapedDash) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapedDashDash) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapedLessThanSign) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapedEndTagOpen) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataEscapedEndTagName) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataDoubleEscapeStart) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataDoubleEscaped) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataDoubleEscapedDash) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataDoubleEscapedDashDash) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataDoubleEscapedLessThanSign) \
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__ENUMERATE_TOKENIZER_STATE(ScriptDataDoubleEscapeEnd) \
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__ENUMERATE_TOKENIZER_STATE(BeforeAttributeName) \
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__ENUMERATE_TOKENIZER_STATE(AttributeName) \
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__ENUMERATE_TOKENIZER_STATE(AfterAttributeName) \
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__ENUMERATE_TOKENIZER_STATE(BeforeAttributeValue) \
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__ENUMERATE_TOKENIZER_STATE(AttributeValueDoubleQuoted) \
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__ENUMERATE_TOKENIZER_STATE(AttributeValueSingleQuoted) \
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__ENUMERATE_TOKENIZER_STATE(AttributeValueUnquoted) \
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__ENUMERATE_TOKENIZER_STATE(AfterAttributeValueQuoted) \
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__ENUMERATE_TOKENIZER_STATE(SelfClosingStartTag) \
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__ENUMERATE_TOKENIZER_STATE(BogusComment) \
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__ENUMERATE_TOKENIZER_STATE(MarkupDeclarationOpen) \
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__ENUMERATE_TOKENIZER_STATE(CommentStart) \
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__ENUMERATE_TOKENIZER_STATE(CommentStartDash) \
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__ENUMERATE_TOKENIZER_STATE(Comment) \
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__ENUMERATE_TOKENIZER_STATE(CommentLessThanSign) \
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__ENUMERATE_TOKENIZER_STATE(CommentLessThanSignBang) \
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__ENUMERATE_TOKENIZER_STATE(CommentLessThanSignBangDash) \
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__ENUMERATE_TOKENIZER_STATE(CommentLessThanSignBangDashDash) \
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__ENUMERATE_TOKENIZER_STATE(CommentEndDash) \
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__ENUMERATE_TOKENIZER_STATE(CommentEnd) \
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__ENUMERATE_TOKENIZER_STATE(CommentEndBang) \
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__ENUMERATE_TOKENIZER_STATE(DOCTYPE) \
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__ENUMERATE_TOKENIZER_STATE(BeforeDOCTYPEName) \
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__ENUMERATE_TOKENIZER_STATE(DOCTYPEName) \
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__ENUMERATE_TOKENIZER_STATE(AfterDOCTYPEName) \
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__ENUMERATE_TOKENIZER_STATE(AfterDOCTYPEPublicKeyword) \
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__ENUMERATE_TOKENIZER_STATE(BeforeDOCTYPEPublicIdentifier) \
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__ENUMERATE_TOKENIZER_STATE(DOCTYPEPublicIdentifierDoubleQuoted) \
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__ENUMERATE_TOKENIZER_STATE(DOCTYPEPublicIdentifierSingleQuoted) \
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__ENUMERATE_TOKENIZER_STATE(AfterDOCTYPEPublicIdentifier) \
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__ENUMERATE_TOKENIZER_STATE(BetweenDOCTYPEPublicAndSystemIdentifiers) \
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__ENUMERATE_TOKENIZER_STATE(AfterDOCTYPESystemKeyword) \
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__ENUMERATE_TOKENIZER_STATE(BeforeDOCTYPESystemIdentifier) \
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__ENUMERATE_TOKENIZER_STATE(DOCTYPESystemIdentifierDoubleQuoted) \
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__ENUMERATE_TOKENIZER_STATE(DOCTYPESystemIdentifierSingleQuoted) \
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__ENUMERATE_TOKENIZER_STATE(AfterDOCTYPESystemIdentifier) \
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__ENUMERATE_TOKENIZER_STATE(BogusDOCTYPE) \
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__ENUMERATE_TOKENIZER_STATE(CDATASection) \
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__ENUMERATE_TOKENIZER_STATE(CDATASectionBracket) \
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__ENUMERATE_TOKENIZER_STATE(CDATASectionEnd) \
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__ENUMERATE_TOKENIZER_STATE(CharacterReference) \
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__ENUMERATE_TOKENIZER_STATE(NamedCharacterReference) \
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__ENUMERATE_TOKENIZER_STATE(AmbiguousAmpersand) \
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__ENUMERATE_TOKENIZER_STATE(NumericCharacterReference) \
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__ENUMERATE_TOKENIZER_STATE(HexadecimalCharacterReferenceStart) \
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__ENUMERATE_TOKENIZER_STATE(DecimalCharacterReferenceStart) \
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__ENUMERATE_TOKENIZER_STATE(HexadecimalCharacterReference) \
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__ENUMERATE_TOKENIZER_STATE(DecimalCharacterReference) \
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__ENUMERATE_TOKENIZER_STATE(NumericCharacterReferenceEnd)
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class HTMLTokenizer {
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public:
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explicit HTMLTokenizer(const StringView& input, const String& encoding);
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enum class State {
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#define __ENUMERATE_TOKENIZER_STATE(state) state,
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ENUMERATE_TOKENIZER_STATES
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#undef __ENUMERATE_TOKENIZER_STATE
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};
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Optional<HTMLToken> next_token();
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void switch_to(Badge<HTMLDocumentParser>, State new_state);
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void set_blocked(bool b) { m_blocked = b; }
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bool is_blocked() const { return m_blocked; }
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String source() const { return m_decoded_input; }
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private:
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Optional<u32> next_code_point();
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Optional<u32> peek_code_point(size_t offset) const;
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bool consume_next_if_match(const StringView&, CaseSensitivity = CaseSensitivity::CaseSensitive);
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void create_new_token(HTMLToken::Type);
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bool current_end_tag_token_is_appropriate() const;
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static const char* state_name(State state)
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{
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switch (state) {
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#define __ENUMERATE_TOKENIZER_STATE(state) \
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case State::state: \
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return #state;
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ENUMERATE_TOKENIZER_STATES
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#undef __ENUMERATE_TOKENIZER_STATE
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};
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VERIFY_NOT_REACHED();
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}
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void will_emit(HTMLToken&);
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void will_switch_to(State);
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void will_reconsume_in(State);
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bool consumed_as_part_of_an_attribute() const;
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State m_state { State::Data };
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State m_return_state { State::Data };
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Vector<u32> m_temporary_buffer;
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String m_decoded_input;
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StringView m_input;
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Utf8View m_utf8_view;
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AK::Utf8CodepointIterator m_utf8_iterator;
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AK::Utf8CodepointIterator m_prev_utf8_iterator;
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HTMLToken m_current_token;
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HTMLToken m_last_emitted_start_tag;
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bool m_has_emitted_eof { false };
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Queue<HTMLToken> m_queued_tokens;
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u32 m_character_reference_code { 0 };
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bool m_blocked { false };
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};
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}
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