'use strict'

Object.defineProperty(exports, '__esModule', {value: true})

var content = require('../tokenize/content.js')
var factorySpace = require('../tokenize/factory-space.js')
var partialBlankLine = require('../tokenize/partial-blank-line.js')

var tokenize = initializeFlow

function initializeFlow(effects) {
  var self = this
  var initial = effects.attempt(
    // Try to parse a blank line.
    partialBlankLine,
    atBlankEnding, // Try to parse initial flow (essentially, only code).
    effects.attempt(
      this.parser.constructs.flowInitial,
      afterConstruct,
      factorySpace(
        effects,
        effects.attempt(
          this.parser.constructs.flow,
          afterConstruct,
          effects.attempt(content, afterConstruct)
        ),
        'linePrefix'
      )
    )
  )
  return initial

  function atBlankEnding(code) {
    if (code === null) {
      effects.consume(code)
      return
    }

    effects.enter('lineEndingBlank')
    effects.consume(code)
    effects.exit('lineEndingBlank')
    self.currentConstruct = undefined
    return initial
  }

  function afterConstruct(code) {
    if (code === null) {
      effects.consume(code)
      return
    }

    effects.enter('lineEnding')
    effects.consume(code)
    effects.exit('lineEnding')
    self.currentConstruct = undefined
    return initial
  }
}

exports.tokenize = tokenize