97 lines
2.7 KiB
JavaScript
97 lines
2.7 KiB
JavaScript
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/**
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* @typedef {import('../types.js').Handle} Handle
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* @typedef {import('../types.js').Info} Info
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* @typedef {import('../types.js').PhrasingParents} PhrasingParents
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* @typedef {import('../types.js').State} State
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*/
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/**
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* Serialize the children of a parent that contains phrasing children.
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*
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* These children will be joined flush together.
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*
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* @param {PhrasingParents} parent
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* Parent of flow nodes.
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* @param {State} state
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* Info passed around about the current state.
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* @param {Info} info
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* Info on where we are in the document we are generating.
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* @returns {string}
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* Serialized children, joined together.
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*/
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export function containerPhrasing(parent, state, info) {
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const indexStack = state.indexStack
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const children = parent.children || []
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/** @type {Array<string>} */
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const results = []
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let index = -1
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let before = info.before
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indexStack.push(-1)
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let tracker = state.createTracker(info)
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while (++index < children.length) {
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const child = children[index]
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/** @type {string} */
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let after
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indexStack[indexStack.length - 1] = index
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if (index + 1 < children.length) {
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/** @type {Handle} */
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// @ts-expect-error: hush, it’s actually a `zwitch`.
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let handle = state.handle.handlers[children[index + 1].type]
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/** @type {Handle} */
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// @ts-expect-error: hush, it’s actually a `zwitch`.
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if (handle && handle.peek) handle = handle.peek
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after = handle
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? handle(children[index + 1], parent, state, {
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before: '',
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after: '',
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...tracker.current()
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}).charAt(0)
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: ''
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} else {
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after = info.after
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}
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// In some cases, html (text) can be found in phrasing right after an eol.
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// When we’d serialize that, in most cases that would be seen as html
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// (flow).
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// As we can’t escape or so to prevent it from happening, we take a somewhat
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// reasonable approach: replace that eol with a space.
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// See: <https://github.com/syntax-tree/mdast-util-to-markdown/issues/15>
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if (
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results.length > 0 &&
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(before === '\r' || before === '\n') &&
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child.type === 'html'
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) {
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results[results.length - 1] = results[results.length - 1].replace(
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/(\r?\n|\r)$/,
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' '
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)
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before = ' '
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// To do: does this work to reset tracker?
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tracker = state.createTracker(info)
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tracker.move(results.join(''))
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}
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results.push(
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tracker.move(
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state.handle(child, parent, state, {
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...tracker.current(),
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before,
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after
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})
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)
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)
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before = results[results.length - 1].slice(-1)
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}
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indexStack.pop()
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return results.join('')
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}
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