mirror of
https://github.com/Sevichecc/Urara-Blog.git
synced 2025-05-20 18:49:13 +08:00
234 lines
5.3 KiB
Text
234 lines
5.3 KiB
Text
/**
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* @typedef {import('micromark-util-types').Construct} Construct
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* @typedef {import('micromark-util-types').Tokenizer} Tokenizer
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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 {
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markdownLineEnding,
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markdownLineEndingOrSpace
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} from 'micromark-util-character'
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/** @type {Construct} */
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export const codeFenced = {
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name: 'codeFenced',
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tokenize: tokenizeCodeFenced,
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concrete: true
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}
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/** @type {Tokenizer} */
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function tokenizeCodeFenced(effects, ok, nok) {
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const self = this
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/** @type {Construct} */
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const closingFenceConstruct = {
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tokenize: tokenizeClosingFence,
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partial: true
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}
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/** @type {Construct} */
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const nonLazyLine = {
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tokenize: tokenizeNonLazyLine,
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partial: true
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}
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const tail = this.events[this.events.length - 1]
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const initialPrefix =
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tail && tail[1].type === 'linePrefix'
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? tail[2].sliceSerialize(tail[1], true).length
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: 0
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let sizeOpen = 0
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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('codeFenced')
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effects.enter('codeFencedFence')
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effects.enter('codeFencedFenceSequence')
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marker = code
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return sequenceOpen(code)
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}
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/** @type {State} */
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function sequenceOpen(code) {
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if (code === marker) {
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effects.consume(code)
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sizeOpen++
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return sequenceOpen
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}
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effects.exit('codeFencedFenceSequence')
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return sizeOpen < 3
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? nok(code)
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: factorySpace(effects, infoOpen, 'whitespace')(code)
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}
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/** @type {State} */
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function infoOpen(code) {
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if (code === null || markdownLineEnding(code)) {
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return openAfter(code)
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}
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effects.enter('codeFencedFenceInfo')
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effects.enter('chunkString', {
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contentType: 'string'
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})
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return info(code)
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}
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/** @type {State} */
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function info(code) {
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if (code === null || markdownLineEndingOrSpace(code)) {
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effects.exit('chunkString')
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effects.exit('codeFencedFenceInfo')
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return factorySpace(effects, infoAfter, 'whitespace')(code)
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}
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if (code === 96 && code === marker) return nok(code)
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effects.consume(code)
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return info
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}
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/** @type {State} */
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function infoAfter(code) {
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if (code === null || markdownLineEnding(code)) {
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return openAfter(code)
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}
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effects.enter('codeFencedFenceMeta')
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effects.enter('chunkString', {
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contentType: 'string'
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})
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return meta(code)
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}
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/** @type {State} */
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function meta(code) {
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if (code === null || markdownLineEnding(code)) {
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effects.exit('chunkString')
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effects.exit('codeFencedFenceMeta')
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return openAfter(code)
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}
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if (code === 96 && code === marker) return nok(code)
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effects.consume(code)
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return meta
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}
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/** @type {State} */
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function openAfter(code) {
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effects.exit('codeFencedFence')
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return self.interrupt ? ok(code) : contentStart(code)
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}
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/** @type {State} */
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function contentStart(code) {
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if (code === null) {
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return after(code)
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}
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if (markdownLineEnding(code)) {
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return effects.attempt(
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nonLazyLine,
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effects.attempt(
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closingFenceConstruct,
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after,
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initialPrefix
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? factorySpace(
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effects,
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contentStart,
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'linePrefix',
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initialPrefix + 1
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)
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: contentStart
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),
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after
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)(code)
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}
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effects.enter('codeFlowValue')
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return contentContinue(code)
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}
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/** @type {State} */
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function contentContinue(code) {
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if (code === null || markdownLineEnding(code)) {
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effects.exit('codeFlowValue')
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return contentStart(code)
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}
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effects.consume(code)
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return contentContinue
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}
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/** @type {State} */
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function after(code) {
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effects.exit('codeFenced')
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return ok(code)
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}
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/** @type {Tokenizer} */
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function tokenizeNonLazyLine(effects, ok, nok) {
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const self = this
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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('lineEnding')
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effects.consume(code)
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effects.exit('lineEnding')
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return lineStart
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}
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/** @type {State} */
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function lineStart(code) {
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return self.parser.lazy[self.now().line] ? nok(code) : ok(code)
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}
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}
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/** @type {Tokenizer} */
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function tokenizeClosingFence(effects, ok, nok) {
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let size = 0
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return factorySpace(
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effects,
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closingSequenceStart,
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'linePrefix',
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this.parser.constructs.disable.null.includes('codeIndented')
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? undefined
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: 4
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)
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/** @type {State} */
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function closingSequenceStart(code) {
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effects.enter('codeFencedFence')
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effects.enter('codeFencedFenceSequence')
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return closingSequence(code)
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}
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/** @type {State} */
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function closingSequence(code) {
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if (code === marker) {
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effects.consume(code)
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size++
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return closingSequence
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}
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if (size < sizeOpen) return nok(code)
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effects.exit('codeFencedFenceSequence')
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return factorySpace(effects, closingSequenceEnd, 'whitespace')(code)
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}
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/** @type {State} */
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function closingSequenceEnd(code) {
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if (code === null || markdownLineEnding(code)) {
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effects.exit('codeFencedFence')
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return ok(code)
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}
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return nok(code)
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}
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}
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}
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