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92 lines
2.1 KiB
Text
92 lines
2.1 KiB
Text
/**
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* @typedef {import('micromark-util-types').Effects} Effects
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* @typedef {import('micromark-util-types').State} State
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* @typedef {import('micromark-util-types').Code} Code
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*/
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import {factorySpace} from 'micromark-factory-space'
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import {markdownLineEnding} from 'micromark-util-character'
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/**
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* @param {Effects} effects
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* @param {State} ok
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* @param {State} nok
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* @param {string} type
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* @param {string} markerType
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* @param {string} stringType
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* @returns {State}
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*/
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// eslint-disable-next-line max-params
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export function factoryTitle(effects, ok, nok, type, markerType, stringType) {
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/** @type {NonNullable<Code>} */
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let marker
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return start
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/** @type {State} */
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function start(code) {
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effects.enter(type)
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effects.enter(markerType)
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effects.consume(code)
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effects.exit(markerType)
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marker = code === 40 ? 41 : code
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return atFirstTitleBreak
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}
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/** @type {State} */
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function atFirstTitleBreak(code) {
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if (code === marker) {
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effects.enter(markerType)
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effects.consume(code)
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effects.exit(markerType)
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effects.exit(type)
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return ok
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}
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effects.enter(stringType)
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return atTitleBreak(code)
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}
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/** @type {State} */
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function atTitleBreak(code) {
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if (code === marker) {
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effects.exit(stringType)
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return atFirstTitleBreak(marker)
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}
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if (code === null) {
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return nok(code)
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} // Note: blank lines can’t exist in content.
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if (markdownLineEnding(code)) {
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effects.enter('lineEnding')
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effects.consume(code)
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effects.exit('lineEnding')
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return factorySpace(effects, atTitleBreak, 'linePrefix')
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}
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effects.enter('chunkString', {
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contentType: 'string'
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})
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return title(code)
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}
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/** @type {State} */
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function title(code) {
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if (code === marker || code === null || markdownLineEnding(code)) {
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effects.exit('chunkString')
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return atTitleBreak(code)
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}
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effects.consume(code)
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return code === 92 ? titleEscape : title
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}
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/** @type {State} */
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function titleEscape(code) {
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if (code === marker || code === 92) {
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effects.consume(code)
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return title
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}
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return title(code)
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}
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}
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