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Markdown parser fork with extended syntax for personal use.
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8.9 kB · 281 lines
Rust
at hack
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282//! The text content type.//!//! **Text** contains phrasing content such as//! [attention][crate::construct::attention] (emphasis, gfm strikethrough, strong),//! [raw (text)][crate::construct::raw_text] (code (text), math (text)), and actual text.//!//! The constructs found in text are://!//! * [Attention][crate::construct::attention] (emphasis, gfm strikethrough, strong)//! * [Autolink][crate::construct::autolink]//! * [Character escape][crate::construct::character_escape]//! * [Character reference][crate::construct::character_reference]//! * [Raw (text)][crate::construct::raw_text] (code (text), math (text))//! * [GFM: Label start (footnote)][crate::construct::gfm_label_start_footnote]//! * [GFM: Task list item check][crate::construct::gfm_task_list_item_check]//! * [Hard break (escape)][crate::construct::hard_break_escape]//! * [HTML (text)][crate::construct::html_text]//! * [Label start (image)][crate::construct::label_start_image]//! * [Label start (link)][crate::construct::label_start_link]//! * [Label end][crate::construct::label_end]//! * [MDX: expression (text)][crate::construct::mdx_expression_text]//! * [MDX: JSX (text)][crate::construct::mdx_jsx_text]//!//! > 👉 **Note**: for performance reasons, hard break (trailing) is formed by//! > [whitespace][crate::construct::partial_whitespace].
use crate::construct::gfm_autolink_literal::resolve as resolve_gfm_autolink_literal;use crate::construct::partial_whitespace::resolve_whitespace;use crate::resolve::Name as ResolveName;use crate::state::{Name as StateName, State};use crate::subtokenize::Subresult;use crate::tokenizer::Tokenizer;
/// Characters that can start something in text.const MARKERS: [u8; 16] = [ b'!', // `label_start_image` b'$', // `raw_text` (math (text)) b'&', // `character_reference` b'*', // `attention` (emphasis, strong) b'<', // `autolink`, `html_text`, `mdx_jsx_text` b'H', // `gfm_autolink_literal` (`protocol` kind) b'W', // `gfm_autolink_literal` (`www.` kind) b'[', // `label_start_link` b'\\', // `character_escape`, `hard_break_escape` b']', // `label_end`, `gfm_label_start_footnote` b'_', // `attention` (emphasis, strong) b'`', // `raw_text` (code (text)) b'h', // `gfm_autolink_literal` (`protocol` kind) b'w', // `gfm_autolink_literal` (`www.` kind) b'{', // `mdx_expression_text` b'~', // `attention` (gfm strikethrough)];
/// Start of text.////// There is a slightly weird case where task list items have their check at/// the start of the first paragraph./// So we start by checking for that.////// ```markdown/// > | abc/// ^/// ```pub fn start(tokenizer: &mut Tokenizer) -> State { tokenizer.tokenize_state.markers = &MARKERS; tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBefore), ); State::Retry(StateName::GfmTaskListItemCheckStart)}
/// Before text.////// ```markdown/// > | abc/// ^/// ```pub fn before(tokenizer: &mut Tokenizer) -> State { match tokenizer.current { None => { tokenizer.register_resolver(ResolveName::Data); tokenizer.register_resolver(ResolveName::Text); State::Ok } Some(b'!') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::LabelStartImageStart) } // raw (text) (code (text), math (text)) Some(b'$' | b'`') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::RawTextStart) } Some(b'&') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::CharacterReferenceStart) } // attention (emphasis, gfm strikethrough, strong) Some(b'*' | b'_' | b'~') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::AttentionStart) } // `autolink`, `html_text` (order does not matter), `mdx_jsx_text` (order matters). Some(b'<') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeHtml), ); State::Retry(StateName::AutolinkStart) } Some(b'H' | b'h') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::GfmAutolinkLiteralProtocolStart) } Some(b'W' | b'w') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::GfmAutolinkLiteralWwwStart) } Some(b'[') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeWikilinkStart), ); State::Retry(StateName::GfmLabelStartFootnoteStart) } Some(b'\\') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeHardBreakEscape), ); State::Retry(StateName::CharacterEscapeStart) } Some(b']') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::LabelEndStart) } Some(b'{') => { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::MdxExpressionTextStart) } _ => State::Retry(StateName::TextBeforeData), }}
/// Before html (text).////// At `<`, which wasn’t an autolink.////// ```markdown/// > | a <b>/// ^/// ```pub fn before_html(tokenizer: &mut Tokenizer) -> State { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeMdxJsx), ); State::Retry(StateName::HtmlTextStart)}
/// Before mdx jsx (text).////// At `<`, which wasn’t an autolink or html.////// ```markdown/// > | a <b>/// ^/// ```pub fn before_mdx_jsx(tokenizer: &mut Tokenizer) -> State { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::MdxJsxTextStart)}
/// Before hard break escape.////// At `\`, which wasn’t a character escape.////// ```markdown/// > | a \␊/// ^/// ```pub fn before_hard_break_escape(tokenizer: &mut Tokenizer) -> State { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::HardBreakEscapeStart)}
/// Before wikilink start.////// At `[`, which wasn’t a GFM label start (footnote).////// ```markdown/// > | [[a]]/// ^/// ```pub fn before_label_wikilink_start(tokenizer: &mut Tokenizer) -> State { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::WikilinkStart)}
/// Before label start (link).///////// At `[`, which wasn’t a GFM label start (footnote).////// ```markdown/// > | [a](b)/// ^/// ```pub fn before_label_start_link(tokenizer: &mut Tokenizer) -> State { tokenizer.attempt( State::Next(StateName::TextBefore), State::Next(StateName::TextBeforeData), ); State::Retry(StateName::LabelStartLinkStart)}
/// Before data.////// ```markdown/// > | a/// ^/// ```pub fn before_data(tokenizer: &mut Tokenizer) -> State { tokenizer.attempt(State::Next(StateName::TextBefore), State::Nok); State::Retry(StateName::DataStart)}
/// Resolve whitespace.pub fn resolve(tokenizer: &mut Tokenizer) -> Option<Subresult> { resolve_whitespace( tokenizer, tokenizer.parse_state.options.constructs.hard_break_trailing, true, );
if tokenizer .parse_state .options .constructs .gfm_autolink_literal { resolve_gfm_autolink_literal(tokenizer); }
tokenizer.map.consume(&mut tokenizer.events); None}