sgauthier
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45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
'use strict'
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var assert = require('assert')
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var asciiPunctuation = require('../character/ascii-punctuation.js')
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var codes = require('../character/codes.js')
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var types = require('../constant/types.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 characterEscape = {
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name: 'characterEscape',
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tokenize: tokenizeCharacterEscape
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}
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function tokenizeCharacterEscape(effects, ok, nok) {
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return start
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function start(code) {
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assert__default['default'](code === codes.backslash, 'expected `\\`')
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effects.enter(types.characterEscape)
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effects.enter(types.escapeMarker)
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effects.consume(code)
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effects.exit(types.escapeMarker)
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return open
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}
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function open(code) {
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if (asciiPunctuation(code)) {
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effects.enter(types.characterEscapeValue)
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effects.consume(code)
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effects.exit(types.characterEscapeValue)
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effects.exit(types.characterEscape)
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return ok
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}
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return nok(code)
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}
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}
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module.exports = characterEscape
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