39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
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import {toString} from 'nlcst-to-string'
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import {modifyChildren} from 'unist-util-modify-children'
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// Closing or final punctuation, or terminal markers that should still be
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// included in the previous sentence, even though they follow the sentence’s
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// terminal marker.
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import {affixSymbol} from '../expressions.js'
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// Move certain punctuation following a terminal marker (thus in the next
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// sentence) to the previous sentence.
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export const mergeAffixSymbol = modifyChildren(function (child, index, parent) {
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const children = child.children
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if (children && children.length > 0 && index > 0) {
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const first = children[0]
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const second = children[1]
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const previous = parent.children[index - 1]
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if (
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(first.type === 'SymbolNode' || first.type === 'PunctuationNode') &&
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affixSymbol.test(toString(first))
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) {
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previous.children.push(children.shift())
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// Update position.
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if (first.position && previous.position) {
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previous.position.end = first.position.end
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}
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if (second && second.position && child.position) {
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child.position.start = second.position.start
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}
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// Next, iterate over the previous node again.
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return index - 1
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}
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}
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})
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