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60 lines
1.6 KiB
Text
60 lines
1.6 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 {codes} from 'micromark-util-symbol/codes.js'
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import {types} from 'micromark-util-symbol/types.js'
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import {labelEnd} from './label-end.js'
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/** @type {Construct} */
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export const labelStartImage = {
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name: 'labelStartImage',
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tokenize: tokenizeLabelStartImage,
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resolveAll: labelEnd.resolveAll
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}
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/** @type {Tokenizer} */
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function tokenizeLabelStartImage(effects, ok, nok) {
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const self = this
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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.exclamationMark, 'expected `!`')
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effects.enter(types.labelImage)
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effects.enter(types.labelImageMarker)
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effects.consume(code)
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effects.exit(types.labelImageMarker)
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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 (code === codes.leftSquareBracket) {
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effects.enter(types.labelMarker)
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effects.consume(code)
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effects.exit(types.labelMarker)
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effects.exit(types.labelImage)
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return after
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}
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return nok(code)
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}
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/** @type {State} */
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function after(code) {
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/* To do: remove in the future once we’ve switched from
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* `micromark-extension-footnote` to `micromark-extension-gfm-footnote`,
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* which doesn’t need this */
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/* Hidden footnotes hook */
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/* c8 ignore next 3 */
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return code === codes.caret &&
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'_hiddenFootnoteSupport' in self.parser.constructs
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? nok(code)
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: ok(code)
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}
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}
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