136 lines
2.4 KiB
JavaScript
136 lines
2.4 KiB
JavaScript
'use strict'
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module.exports = atxHeading
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var lineFeed = '\n'
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var tab = '\t'
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var space = ' '
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var numberSign = '#'
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var maxFenceCount = 6
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function atxHeading(eat, value, silent) {
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var self = this
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var pedantic = self.options.pedantic
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var length = value.length + 1
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var index = -1
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var now = eat.now()
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var subvalue = ''
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var content = ''
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var character
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var queue
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var depth
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// Eat initial spacing.
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while (++index < length) {
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character = value.charAt(index)
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if (character !== space && character !== tab) {
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index--
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break
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}
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subvalue += character
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}
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// Eat hashes.
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depth = 0
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while (++index <= length) {
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character = value.charAt(index)
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if (character !== numberSign) {
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index--
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break
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}
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subvalue += character
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depth++
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}
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if (depth > maxFenceCount) {
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return
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}
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if (!depth || (!pedantic && value.charAt(index + 1) === numberSign)) {
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return
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}
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length = value.length + 1
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// Eat intermediate white-space.
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queue = ''
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while (++index < length) {
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character = value.charAt(index)
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if (character !== space && character !== tab) {
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index--
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break
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}
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queue += character
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}
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// Exit when not in pedantic mode without spacing.
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if (!pedantic && queue.length === 0 && character && character !== lineFeed) {
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return
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}
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if (silent) {
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return true
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}
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// Eat content.
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subvalue += queue
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queue = ''
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content = ''
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while (++index < length) {
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character = value.charAt(index)
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if (!character || character === lineFeed) {
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break
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}
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if (character !== space && character !== tab && character !== numberSign) {
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content += queue + character
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queue = ''
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continue
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}
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while (character === space || character === tab) {
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queue += character
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character = value.charAt(++index)
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}
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// `#` without a queue is part of the content.
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if (!pedantic && content && !queue && character === numberSign) {
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content += character
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continue
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}
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while (character === numberSign) {
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queue += character
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character = value.charAt(++index)
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}
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while (character === space || character === tab) {
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queue += character
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character = value.charAt(++index)
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}
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index--
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}
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now.column += subvalue.length
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now.offset += subvalue.length
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subvalue += content + queue
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return eat(subvalue)({
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type: 'heading',
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depth: depth,
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children: self.tokenizeInline(content, now)
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})
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}
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