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44 lines
1.1 KiB
44 lines
1.1 KiB
'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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