| /** | |
| * @typedef {import('micromark-util-types').Code} Code | |
| * @typedef {import('micromark-util-types').Construct} Construct | |
| * @typedef {import('micromark-util-types').State} State | |
| * @typedef {import('micromark-util-types').TokenizeContext} TokenizeContext | |
| * @typedef {import('micromark-util-types').Tokenizer} Tokenizer | |
| */ | |
| import {factorySpace} from 'micromark-factory-space' | |
| import {markdownLineEnding, markdownSpace} from 'micromark-util-character' | |
| /** @type {Construct} */ | |
| export const thematicBreak = { | |
| name: 'thematicBreak', | |
| tokenize: tokenizeThematicBreak | |
| } | |
| /** | |
| * @this {TokenizeContext} | |
| * @type {Tokenizer} | |
| */ | |
| function tokenizeThematicBreak(effects, ok, nok) { | |
| let size = 0 | |
| /** @type {NonNullable<Code>} */ | |
| let marker | |
| return start | |
| /** | |
| * Start of thematic break. | |
| * | |
| * ```markdown | |
| * > | *** | |
| * ^ | |
| * ``` | |
| * | |
| * @type {State} | |
| */ | |
| function start(code) { | |
| effects.enter('thematicBreak') | |
| // To do: parse indent like `markdown-rs`. | |
| return before(code) | |
| } | |
| /** | |
| * After optional whitespace, at marker. | |
| * | |
| * ```markdown | |
| * > | *** | |
| * ^ | |
| * ``` | |
| * | |
| * @type {State} | |
| */ | |
| function before(code) { | |
| marker = code | |
| return atBreak(code) | |
| } | |
| /** | |
| * After something, before something else. | |
| * | |
| * ```markdown | |
| * > | *** | |
| * ^ | |
| * ``` | |
| * | |
| * @type {State} | |
| */ | |
| function atBreak(code) { | |
| if (code === marker) { | |
| effects.enter('thematicBreakSequence') | |
| return sequence(code) | |
| } | |
| if (size >= 3 && (code === null || markdownLineEnding(code))) { | |
| effects.exit('thematicBreak') | |
| return ok(code) | |
| } | |
| return nok(code) | |
| } | |
| /** | |
| * In sequence. | |
| * | |
| * ```markdown | |
| * > | *** | |
| * ^ | |
| * ``` | |
| * | |
| * @type {State} | |
| */ | |
| function sequence(code) { | |
| if (code === marker) { | |
| effects.consume(code) | |
| size++ | |
| return sequence | |
| } | |
| effects.exit('thematicBreakSequence') | |
| return markdownSpace(code) | |
| ? factorySpace(effects, atBreak, 'whitespace')(code) | |
| : atBreak(code) | |
| } | |
| } | |