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/**
* @typedef {import('micromark-util-types').Construct} Construct
* @typedef {import('micromark-util-types').State} State
* @typedef {import('micromark-util-types').TokenizeContext} TokenizeContext
* @typedef {import('micromark-util-types').Tokenizer} Tokenizer
*/
import {asciiPunctuation} from 'micromark-util-character'
import {codes} from 'micromark-util-symbol/codes.js'
import {types} from 'micromark-util-symbol/types.js'
import {ok as assert} from 'uvu/assert'
/** @type {Construct} */
export const characterEscape = {
name: 'characterEscape',
tokenize: tokenizeCharacterEscape
}
/**
* @this {TokenizeContext}
* @type {Tokenizer}
*/
function tokenizeCharacterEscape(effects, ok, nok) {
return start
/**
* Start of character escape.
*
* ```markdown
* > | a\*b
* ^
* ```
*
* @type {State}
*/
function start(code) {
assert(code === codes.backslash, 'expected `\\`')
effects.enter(types.characterEscape)
effects.enter(types.escapeMarker)
effects.consume(code)
effects.exit(types.escapeMarker)
return inside
}
/**
* After `\`, at punctuation.
*
* ```markdown
* > | a\*b
* ^
* ```
*
* @type {State}
*/
function inside(code) {
// ASCII punctuation.
if (asciiPunctuation(code)) {
effects.enter(types.characterEscapeValue)
effects.consume(code)
effects.exit(types.characterEscapeValue)
effects.exit(types.characterEscape)
return ok
}
return nok(code)
}
}
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