49 lines
1.2 KiB
JavaScript
49 lines
1.2 KiB
JavaScript
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/**
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* @typedef {import('mdast').Emphasis} Emphasis
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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').State} State
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*/
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import {checkEmphasis} from '../util/check-emphasis.js'
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emphasis.peek = emphasisPeek
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// To do: there are cases where emphasis cannot “form” depending on the
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// previous or next character of sequences.
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// There’s no way around that though, except for injecting zero-width stuff.
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// Do we need to safeguard against that?
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/**
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* @param {Emphasis} 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 emphasis(node, _, state, info) {
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const marker = checkEmphasis(state)
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const exit = state.enter('emphasis')
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const tracker = state.createTracker(info)
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let value = tracker.move(marker)
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value += tracker.move(
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state.containerPhrasing(node, {
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before: value,
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after: marker,
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...tracker.current()
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})
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)
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value += tracker.move(marker)
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exit()
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return value
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}
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/**
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* @param {Emphasis} _
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* @param {Parents | undefined} _1
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* @param {State} state
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* @returns {string}
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*/
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function emphasisPeek(_, _1, state) {
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return state.options.emphasis || '*'
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}
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