sgauthier
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75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
'use strict'
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var assert = require('assert')
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var codes = require('../character/codes.js')
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var markdownLineEnding = require('../character/markdown-line-ending.js')
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var markdownSpace = require('../character/markdown-space.js')
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var constants = require('../constant/constants.js')
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var types = require('../constant/types.js')
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var factorySpace = require('./factory-space.js')
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function _interopDefaultLegacy(e) {
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return e && typeof e === 'object' && 'default' in e ? e : {default: e}
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}
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var assert__default = /*#__PURE__*/ _interopDefaultLegacy(assert)
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var thematicBreak = {
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name: 'thematicBreak',
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tokenize: tokenizeThematicBreak
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}
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function tokenizeThematicBreak(effects, ok, nok) {
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var size = 0
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var marker
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return start
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function start(code) {
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assert__default['default'](
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code === codes.asterisk ||
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code === codes.dash ||
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code === codes.underscore,
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'expected `*`, `-`, or `_`'
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)
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effects.enter(types.thematicBreak)
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marker = code
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return atBreak(code)
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}
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function atBreak(code) {
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if (code === marker) {
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effects.enter(types.thematicBreakSequence)
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return sequence(code)
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}
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if (markdownSpace(code)) {
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return factorySpace(effects, atBreak, types.whitespace)(code)
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}
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if (
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size < constants.thematicBreakMarkerCountMin ||
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(code !== codes.eof && !markdownLineEnding(code))
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) {
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return nok(code)
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}
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effects.exit(types.thematicBreak)
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return ok(code)
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}
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function sequence(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 sequence
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}
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effects.exit(types.thematicBreakSequence)
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return atBreak(code)
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}
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}
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module.exports = thematicBreak
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