/**
 * @typedef {import('micromark-util-types').Construct} Construct
 * @typedef {import('micromark-util-types').Tokenizer} Tokenizer
 * @typedef {import('micromark-util-types').State} State
 */
import {markdownLineEnding} from 'micromark-util-character'

/** @type {Construct} */
export const hardBreakEscape = {
  name: 'hardBreakEscape',
  tokenize: tokenizeHardBreakEscape
}
/** @type {Tokenizer} */

function tokenizeHardBreakEscape(effects, ok, nok) {
  return start
  /** @type {State} */

  function start(code) {
    effects.enter('hardBreakEscape')
    effects.enter('escapeMarker')
    effects.consume(code)
    return open
  }
  /** @type {State} */

  function open(code) {
    if (markdownLineEnding(code)) {
      effects.exit('escapeMarker')
      effects.exit('hardBreakEscape')
      return ok(code)
    }

    return nok(code)
  }
}