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44 lines
1.2 KiB
Text
44 lines
1.2 KiB
Text
/**
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* @typedef {import('micromark-util-types').Construct} Construct
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* @typedef {import('micromark-util-types').Tokenizer} Tokenizer
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* @typedef {import('micromark-util-types').State} State
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*/
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import {ok as assert} from 'uvu/assert'
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import {asciiPunctuation} from 'micromark-util-character'
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import {codes} from 'micromark-util-symbol/codes.js'
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import {types} from 'micromark-util-symbol/types.js'
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/** @type {Construct} */
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export const characterEscape = {
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name: 'characterEscape',
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tokenize: tokenizeCharacterEscape
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}
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/** @type {Tokenizer} */
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function tokenizeCharacterEscape(effects, ok, nok) {
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return start
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/** @type {State} */
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function start(code) {
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assert(code === codes.backslash, 'expected `\\`')
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effects.enter(types.characterEscape)
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effects.enter(types.escapeMarker)
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effects.consume(code)
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effects.exit(types.escapeMarker)
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return open
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}
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/** @type {State} */
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function open(code) {
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if (asciiPunctuation(code)) {
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effects.enter(types.characterEscapeValue)
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effects.consume(code)
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effects.exit(types.characterEscapeValue)
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effects.exit(types.characterEscape)
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return ok
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}
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return nok(code)
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}
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}
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