117 lines
2.6 KiB
JavaScript
117 lines
2.6 KiB
JavaScript
module.exports = createLabel
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// To do: use `dist/`
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var markdownLineEnding = require('micromark/dist/character/markdown-line-ending')
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var markdownSpace = require('micromark/dist/character/markdown-space')
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// This is a fork of:
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// <https://github.com/micromark/micromark/blob/bf53bf9/lib/tokenize/factory-label.js>
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// to allow empty, support text instead of strings, and optionally w/o EOLs,
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// labels.
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// eslint-disable-next-line max-params
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function createLabel(
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effects,
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ok,
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nok,
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type,
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markerType,
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stringType,
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allowEmpty,
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disallowEol
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) {
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var size = 0
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var data
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return start
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function start(code) {
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/* istanbul ignore if - always `[` */
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if (code !== 91 /* `[` */) throw new Error('expected `[`')
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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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return afterStart
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}
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function afterStart(code) {
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if (code === 93 /* `]` */ && allowEmpty) {
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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 atBreak(code)
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}
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function atBreak(code) {
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if (
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code === null /* EOF */ ||
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code === 91 /* `[` */ ||
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(code === 93 /* `]` */ && !data && !allowEmpty) ||
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/* <https://github.com/micromark/micromark/blob/bf53bf9/lib/constant/constants.js#L34> */
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size > 999
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) {
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return nok(code)
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}
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if (code === 93 /* `]` */) {
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effects.exit(stringType)
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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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if (markdownLineEnding(code)) {
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if (disallowEol) {
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return nok(code)
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}
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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 atBreak
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}
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effects.enter('chunkText', {contentType: 'text'})
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return label(code)
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}
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function label(code) {
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if (
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code === null /* EOF */ ||
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code === 91 /* `[` */ ||
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code === 93 /* `]` */ ||
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markdownLineEnding(code) ||
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/* <https://github.com/micromark/micromark/blob/bf53bf9/lib/constant/constants.js#L34> */
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size > 999
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) {
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effects.exit('chunkText')
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return atBreak(code)
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}
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effects.consume(code)
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data = data || !markdownSpace(code)
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return code === 92 /* `\` */ ? labelEscape : label
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}
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function labelEscape(code) {
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if (
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code === 91 /* `[` */ ||
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code === 92 /* `\` */ ||
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code === 93 /* `]` */
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) {
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effects.consume(code)
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size++
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return label
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}
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return label(code)
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}
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}
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