ab8432783e
This is roughly on-spec, although I had to invent a simple "aborted" state for the tokenizer.
195 lines
7.1 KiB
C++
195 lines
7.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/HTML/Parser/HTMLTokenizer.h>
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#include <LibWeb/HTML/Parser/ListOfActiveFormattingElements.h>
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#include <LibWeb/HTML/Parser/StackOfOpenElements.h>
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namespace Web::HTML {
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#define ENUMERATE_INSERTION_MODES \
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__ENUMERATE_INSERTION_MODE(Initial) \
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__ENUMERATE_INSERTION_MODE(BeforeHTML) \
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__ENUMERATE_INSERTION_MODE(BeforeHead) \
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__ENUMERATE_INSERTION_MODE(InHead) \
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__ENUMERATE_INSERTION_MODE(InHeadNoscript) \
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__ENUMERATE_INSERTION_MODE(AfterHead) \
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__ENUMERATE_INSERTION_MODE(InBody) \
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__ENUMERATE_INSERTION_MODE(Text) \
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__ENUMERATE_INSERTION_MODE(InTable) \
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__ENUMERATE_INSERTION_MODE(InTableText) \
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__ENUMERATE_INSERTION_MODE(InCaption) \
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__ENUMERATE_INSERTION_MODE(InColumnGroup) \
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__ENUMERATE_INSERTION_MODE(InTableBody) \
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__ENUMERATE_INSERTION_MODE(InRow) \
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__ENUMERATE_INSERTION_MODE(InCell) \
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__ENUMERATE_INSERTION_MODE(InSelect) \
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__ENUMERATE_INSERTION_MODE(InSelectInTable) \
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__ENUMERATE_INSERTION_MODE(InTemplate) \
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__ENUMERATE_INSERTION_MODE(AfterBody) \
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__ENUMERATE_INSERTION_MODE(InFrameset) \
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__ENUMERATE_INSERTION_MODE(AfterFrameset) \
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__ENUMERATE_INSERTION_MODE(AfterAfterBody) \
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__ENUMERATE_INSERTION_MODE(AfterAfterFrameset)
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class HTMLParser : public RefCounted<HTMLParser> {
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friend class HTMLTokenizer;
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public:
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~HTMLParser();
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static NonnullRefPtr<HTMLParser> create_for_scripting(DOM::Document&);
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static NonnullRefPtr<HTMLParser> create_with_uncertain_encoding(DOM::Document&, ByteBuffer const& input);
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static NonnullRefPtr<HTMLParser> create(DOM::Document&, StringView input, String const& encoding);
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void run();
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void run(const AK::URL&);
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DOM::Document& document();
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static Vector<JS::Handle<DOM::Node>> parse_html_fragment(DOM::Element& context_element, StringView);
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static String serialize_html_fragment(DOM::Node const& node);
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enum class InsertionMode {
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#define __ENUMERATE_INSERTION_MODE(mode) mode,
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ENUMERATE_INSERTION_MODES
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#undef __ENUMERATE_INSERTION_MODE
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};
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InsertionMode insertion_mode() const { return m_insertion_mode; }
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static bool is_special_tag(FlyString const& tag_name, FlyString const& namespace_);
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HTMLTokenizer& tokenizer() { return m_tokenizer; }
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// https://html.spec.whatwg.org/multipage/parsing.html#abort-a-parser
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void abort();
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bool aborted() const { return m_aborted; }
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bool stopped() const { return m_stop_parsing; }
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size_t script_nesting_level() const { return m_script_nesting_level; }
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private:
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HTMLParser(DOM::Document&, StringView input, String const& encoding);
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HTMLParser(DOM::Document&);
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char const* insertion_mode_name() const;
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DOM::QuirksMode which_quirks_mode(HTMLToken const&) const;
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void handle_initial(HTMLToken&);
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void handle_before_html(HTMLToken&);
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void handle_before_head(HTMLToken&);
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void handle_in_head(HTMLToken&);
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void handle_in_head_noscript(HTMLToken&);
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void handle_after_head(HTMLToken&);
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void handle_in_body(HTMLToken&);
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void handle_after_body(HTMLToken&);
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void handle_after_after_body(HTMLToken&);
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void handle_text(HTMLToken&);
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void handle_in_table(HTMLToken&);
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void handle_in_table_body(HTMLToken&);
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void handle_in_row(HTMLToken&);
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void handle_in_cell(HTMLToken&);
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void handle_in_table_text(HTMLToken&);
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void handle_in_select_in_table(HTMLToken&);
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void handle_in_select(HTMLToken&);
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void handle_in_caption(HTMLToken&);
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void handle_in_column_group(HTMLToken&);
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void handle_in_template(HTMLToken&);
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void handle_in_frameset(HTMLToken&);
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void handle_after_frameset(HTMLToken&);
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void handle_after_after_frameset(HTMLToken&);
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void the_end();
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void stop_parsing() { m_stop_parsing = true; }
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void generate_implied_end_tags(FlyString const& exception = {});
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void generate_all_implied_end_tags_thoroughly();
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JS::NonnullGCPtr<DOM::Element> create_element_for(HTMLToken const&, FlyString const& namespace_, DOM::Node const& intended_parent);
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struct AdjustedInsertionLocation {
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JS::GCPtr<DOM::Node> parent;
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JS::GCPtr<DOM::Node> insert_before_sibling;
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};
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AdjustedInsertionLocation find_appropriate_place_for_inserting_node(JS::GCPtr<DOM::Element> override_target = nullptr);
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DOM::Text* find_character_insertion_node();
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void flush_character_insertions();
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JS::NonnullGCPtr<DOM::Element> insert_foreign_element(HTMLToken const&, FlyString const&);
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JS::NonnullGCPtr<DOM::Element> insert_html_element(HTMLToken const&);
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DOM::Element& current_node();
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DOM::Element& adjusted_current_node();
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DOM::Element& node_before_current_node();
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void insert_character(u32 data);
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void insert_comment(HTMLToken&);
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void reconstruct_the_active_formatting_elements();
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void close_a_p_element();
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void process_using_the_rules_for(InsertionMode, HTMLToken&);
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void process_using_the_rules_for_foreign_content(HTMLToken&);
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void parse_generic_raw_text_element(HTMLToken&);
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void increment_script_nesting_level();
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void decrement_script_nesting_level();
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void reset_the_insertion_mode_appropriately();
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void adjust_mathml_attributes(HTMLToken&);
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void adjust_svg_tag_names(HTMLToken&);
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void adjust_svg_attributes(HTMLToken&);
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void adjust_foreign_attributes(HTMLToken&);
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enum AdoptionAgencyAlgorithmOutcome {
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DoNothing,
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RunAnyOtherEndTagSteps,
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};
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AdoptionAgencyAlgorithmOutcome run_the_adoption_agency_algorithm(HTMLToken&);
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void clear_the_stack_back_to_a_table_context();
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void clear_the_stack_back_to_a_table_body_context();
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void clear_the_stack_back_to_a_table_row_context();
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void close_the_cell();
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InsertionMode m_insertion_mode { InsertionMode::Initial };
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InsertionMode m_original_insertion_mode { InsertionMode::Initial };
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StackOfOpenElements m_stack_of_open_elements;
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Vector<InsertionMode> m_stack_of_template_insertion_modes;
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ListOfActiveFormattingElements m_list_of_active_formatting_elements;
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HTMLTokenizer m_tokenizer;
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bool m_foster_parenting { false };
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bool m_frameset_ok { true };
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bool m_parsing_fragment { false };
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bool m_scripting_enabled { true };
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bool m_invoked_via_document_write { false };
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bool m_aborted { false };
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bool m_parser_pause_flag { false };
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bool m_stop_parsing { false };
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size_t m_script_nesting_level { 0 };
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JS::Realm& realm();
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JS::Handle<DOM::Document> m_document;
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JS::Handle<HTMLHeadElement> m_head_element;
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JS::Handle<HTMLFormElement> m_form_element;
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JS::Handle<DOM::Element> m_context_element;
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Vector<HTMLToken> m_pending_table_character_tokens;
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JS::Handle<DOM::Text> m_character_insertion_node;
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StringBuilder m_character_insertion_builder;
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};
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RefPtr<CSS::StyleValue> parse_dimension_value(StringView);
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RefPtr<CSS::StyleValue> parse_nonzero_dimension_value(StringView);
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}
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