79 lines
1.8 KiB
JavaScript
79 lines
1.8 KiB
JavaScript
/**
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* @typedef {import('mdast').Code} Code
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* @typedef {import('mdast').Parents} Parents
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* @typedef {import('../types.js').Info} Info
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* @typedef {import('../types.js').Map} Map
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* @typedef {import('../types.js').State} State
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*/
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import {longestStreak} from 'longest-streak'
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import {formatCodeAsIndented} from '../util/format-code-as-indented.js'
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import {checkFence} from '../util/check-fence.js'
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/**
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* @param {Code} node
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* @param {Parents | undefined} _
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* @param {State} state
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* @param {Info} info
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* @returns {string}
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*/
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export function code(node, _, state, info) {
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const marker = checkFence(state)
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const raw = node.value || ''
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const suffix = marker === '`' ? 'GraveAccent' : 'Tilde'
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if (formatCodeAsIndented(node, state)) {
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const exit = state.enter('codeIndented')
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const value = state.indentLines(raw, map)
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exit()
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return value
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}
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const tracker = state.createTracker(info)
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const sequence = marker.repeat(Math.max(longestStreak(raw, marker) + 1, 3))
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const exit = state.enter('codeFenced')
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let value = tracker.move(sequence)
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if (node.lang) {
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const subexit = state.enter(`codeFencedLang${suffix}`)
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value += tracker.move(
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state.safe(node.lang, {
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before: value,
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after: ' ',
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encode: ['`'],
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...tracker.current()
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})
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)
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subexit()
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}
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if (node.lang && node.meta) {
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const subexit = state.enter(`codeFencedMeta${suffix}`)
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value += tracker.move(' ')
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value += tracker.move(
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state.safe(node.meta, {
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before: value,
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after: '\n',
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encode: ['`'],
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...tracker.current()
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})
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)
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subexit()
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}
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value += tracker.move('\n')
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if (raw) {
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value += tracker.move(raw + '\n')
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}
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value += tracker.move(sequence)
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exit()
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return value
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}
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/** @type {Map} */
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function map(line, _, blank) {
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return (blank ? '' : ' ') + line
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}
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