FM / lib

/home/techb158/balavpn.abdallabala.com/node_modules/js-yaml/lib/

/home/techb158/balavpn.abdallabala.com/node_modules/js-yaml/lib

Name	Size	Mode	Actions
schema/	-	0777	rm
type/	-	0777	rm
common.js	1094	0666	edit dl rm
dumper.js	30967	0666	edit dl rm
exception.js	1285	0666	edit dl rm
index_vite_proxy.tmp.mjs	434	0666	edit dl rm
loader.js	50665	0666	edit dl rm
schema.js	3257	0666	edit dl rm
snippet.js	3063	0666	edit dl rm
type.js	1736	0666	edit dl rm

Edit: /home/techb158/balavpn.abdallabala.com/node_modules/js-yaml/lib/loader.js (50665B)

'use strict'

const common = require('./common')
const YAMLException = require('./exception')
const makeSnippet = require('./snippet')
const DEFAULT_SCHEMA = require('./schema/default')

const _hasOwnProperty = Object.prototype.hasOwnProperty

const CONTEXT_FLOW_IN = 1
const CONTEXT_FLOW_OUT = 2
const CONTEXT_BLOCK_IN = 3
const CONTEXT_BLOCK_OUT = 4

const CHOMPING_CLIP = 1
const CHOMPING_STRIP = 2
const CHOMPING_KEEP = 3

// eslint-disable-next-line no-control-regex
const PATTERN_NON_PRINTABLE = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/
const PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/
// eslint-disable-next-line no-useless-escape
const PATTERN_FLOW_INDICATORS = /[,\[\]{}]/
// eslint-disable-next-line no-useless-escape
const PATTERN_TAG_HANDLE = /^(?:!|!!|![0-9A-Za-z-]+!)$/
// eslint-disable-next-line no-useless-escape
const PATTERN_TAG_URI = /^(?:!|[^,\[\]{}])(?:%[0-9a-f]{2}|[0-9a-z\-#;/?:@&=+$,_.!~*'()\[\]])*$/i

function _class (obj) { return Object.prototype.toString.call(obj) }

function isEol (c) {
  return (c === 0x0A/* LF */) || (c === 0x0D/* CR */)
}

function isWhiteSpace (c) {
  return (c === 0x09/* Tab */) || (c === 0x20/* Space */)
}

function isWsOrEol (c) {
  return (c === 0x09/* Tab */) ||
         (c === 0x20/* Space */) ||
         (c === 0x0A/* LF */) ||
         (c === 0x0D/* CR */)
}

function isFlowIndicator (c) {
  return c === 0x2C/* , */ ||
         c === 0x5B/* [ */ ||
         c === 0x5D/* ] */ ||
         c === 0x7B/* { */ ||
         c === 0x7D/* } */
}

function fromHexCode (c) {
  if ((c >= 0x30/* 0 */) && (c <= 0x39/* 9 */)) {
    return c - 0x30
  }

const lc = c | 0x20

if ((lc >= 0x61/* a */) && (lc <= 0x66/* f */)) {
    return lc - 0x61 + 10
  }

return -1
}

function escapedHexLen (c) {
  if (c === 0x78/* x */) { return 2 }
  if (c === 0x75/* u */) { return 4 }
  if (c === 0x55/* U */) { return 8 }
  return 0
}

function fromDecimalCode (c) {
  if ((c >= 0x30/* 0 */) && (c <= 0x39/* 9 */)) {
    return c - 0x30
  }

return -1
}

function simpleEscapeSequence (c) {
  switch (c) {
    case 0x30/* 0 */: return '\x00'
    case 0x61/* a */: return '\x07'
    case 0x62/* b */: return '\x08'
    case 0x74/* t */: return '\x09'
    case 0x09/* Tab */: return '\x09'
    case 0x6E/* n */: return '\x0A'
    case 0x76/* v */: return '\x0B'
    case 0x66/* f */: return '\x0C'
    case 0x72/* r */: return '\x0D'
    case 0x65/* e */: return '\x1B'
    case 0x20/* Space */: return ' '
    case 0x22/* " */: return '\x22'
    case 0x2F/* / */: return '/'
    case 0x5C/* \ */: return '\x5C'
    case 0x4E/* N */: return '\x85'
    case 0x5F/* _ */: return '\xA0'
    case 0x4C/* L */: return '\u2028'
    case 0x50/* P */: return '\u2029'
    default: return ''
  }
}

function charFromCodepoint (c) {
  if (c <= 0xFFFF) {
    return String.fromCharCode(c)
  }
  // Encode UTF-16 surrogate pair
  // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
  return String.fromCharCode(
    ((c - 0x010000) >> 10) + 0xD800,
    ((c - 0x010000) & 0x03FF) + 0xDC00
  )
}

// set a property of a literal object, while protecting against prototype pollution,
// see https://github.com/nodeca/js-yaml/issues/164 for more details
function setProperty (object, key, value) {
  // used for this specific key only because Object.defineProperty is slow
  if (key === '__proto__') {
    Object.defineProperty(object, key, {
      configurable: true,
      enumerable: true,
      writable: true,
      value: value
    })
  } else {
    object[key] = value
  }
}

const simpleEscapeCheck = new Array(256) // integer, for fast access
const simpleEscapeMap = new Array(256)
for (let i = 0; i < 256; i++) {
  simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0
  simpleEscapeMap[i] = simpleEscapeSequence(i)
}

function State (input, options) {
  this.input = input

this.filename = options['filename'] || null
  this.schema = options['schema'] || DEFAULT_SCHEMA
  this.onWarning = options['onWarning'] || null
  // (Hidden) Remove? makes the loader to expect YAML 1.1 documents
  // if such documents have no explicit %YAML directive
  this.legacy = options['legacy'] || false

this.json = options['json'] || false
  this.listener = options['listener'] || null
  this.maxDepth = typeof options['maxDepth'] === 'number' ? options['maxDepth'] : 100
  this.maxTotalMergeKeys = typeof options['maxTotalMergeKeys'] === 'number' ? options['maxTotalMergeKeys'] : 10000

this.implicitTypes = this.schema.compiledImplicit
  this.typeMap = this.schema.compiledTypeMap

this.length = input.length
  this.position = 0
  this.line = 0
  this.lineStart = 0
  this.lineIndent = 0
  this.depth = 0
  this.totalMergeKeys = 0

// position of first leading tab in the current line,
  // used to make sure there are no tabs in the indentation
  this.firstTabInLine = -1

this.documents = []
  this.anchorMapTransactions = []

/*
  this.version;
  this.checkLineBreaks;
  this.tagMap;
  this.anchorMap;
  this.tag;
  this.anchor;
  this.kind;
  this.result; */
}

function generateError (state, message) {
  const mark = {
    name: state.filename,
    buffer: state.input.slice(0, -1), // omit trailing \0
    position: state.position,
    line: state.line,
    column: state.position - state.lineStart
  }

mark.snippet = makeSnippet(mark)

return new YAMLException(message, mark)
}

function throwError (state, message) {
  throw generateError(state, message)
}

function throwWarning (state, message) {
  if (state.onWarning) {
    state.onWarning.call(null, generateError(state, message))
  }
}

function storeAnchor (state, name, value) {
  const transactions = state.anchorMapTransactions

if (transactions.length !== 0) {
    const transaction = transactions[transactions.length - 1]

if (!_hasOwnProperty.call(transaction, name)) {
      transaction[name] = {
        existed: _hasOwnProperty.call(state.anchorMap, name),
        value: state.anchorMap[name]
      }
    }
  }

state.anchorMap[name] = value
}

function beginAnchorTransaction (state) {
  state.anchorMapTransactions.push(Object.create(null))
}

function commitAnchorTransaction (state) {
  const transaction = state.anchorMapTransactions.pop()
  const transactions = state.anchorMapTransactions

if (transactions.length === 0) return

const parent = transactions[transactions.length - 1]
  const names = Object.keys(transaction)

for (let index = 0, length = names.length; index < length; index += 1) {
    const name = names[index]

if (!_hasOwnProperty.call(parent, name)) {
      parent[name] = transaction[name]
    }
  }
}

function rollbackAnchorTransaction (state) {
  const transaction = state.anchorMapTransactions.pop()
  const names = Object.keys(transaction)

for (let index = names.length - 1; index >= 0; index -= 1) {
    const entry = transaction[names[index]]

if (entry.existed) {
      state.anchorMap[names[index]] = entry.value
    } else {
      delete state.anchorMap[names[index]]
    }
  }
}

function snapshotState (state) {
  return {
    position: state.position,
    line: state.line,
    lineStart: state.lineStart,
    lineIndent: state.lineIndent,
    firstTabInLine: state.firstTabInLine,
    tag: state.tag,
    anchor: state.anchor,
    kind: state.kind,
    result: state.result
  }
}

function restoreState (state, snapshot) {
  state.position = snapshot.position
  state.line = snapshot.line
  state.lineStart = snapshot.lineStart
  state.lineIndent = snapshot.lineIndent
  state.firstTabInLine = snapshot.firstTabInLine
  state.tag = snapshot.tag
  state.anchor = snapshot.anchor
  state.kind = snapshot.kind
  state.result = snapshot.result
}

const directiveHandlers = {

YAML: function handleYamlDirective (state, name, args) {
    if (state.version !== null) {
      throwError(state, 'duplication of %YAML directive')
    }

if (args.length !== 1) {
      throwError(state, 'YAML directive accepts exactly one argument')
    }

const match = /^([0-9]+)\.([0-9]+)$/.exec(args[0])

if (match === null) {
      throwError(state, 'ill-formed argument of the YAML directive')
    }

const major = parseInt(match[1], 10)
    const minor = parseInt(match[2], 10)

if (major !== 1) {
      throwError(state, 'unacceptable YAML version of the document')
    }

state.version = args[0]
    state.checkLineBreaks = (minor < 2)

if (minor !== 1 && minor !== 2) {
      throwWarning(state, 'unsupported YAML version of the document')
    }
  },

TAG: function handleTagDirective (state, name, args) {
    let prefix

if (args.length !== 2) {
      throwError(state, 'TAG directive accepts exactly two arguments')
    }

const handle = args[0]
    prefix = args[1]

if (!PATTERN_TAG_HANDLE.test(handle)) {
      throwError(state, 'ill-formed tag handle (first argument) of the TAG directive')
    }

if (_hasOwnProperty.call(state.tagMap, handle)) {
      throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle')
    }

if (!PATTERN_TAG_URI.test(prefix)) {
      throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive')
    }

try {
      prefix = decodeURIComponent(prefix)
    } catch (err) {
      throwError(state, 'tag prefix is malformed: ' + prefix)
    }

state.tagMap[handle] = prefix
  }
}

function captureSegment (state, start, end, checkJson) {
  if (start < end) {
    const _result = state.input.slice(start, end)

if (checkJson) {
      for (let _position = 0, _length = _result.length; _position < _length; _position += 1) {
        const _character = _result.charCodeAt(_position)
        if (!(_character === 0x09 ||
              (_character >= 0x20 && _character <= 0x10FFFF))) {
          throwError(state, 'expected valid JSON character')
        }
      }
    } else if (PATTERN_NON_PRINTABLE.test(_result)) {
      throwError(state, 'the stream contains non-printable characters')
    }

state.result += _result
  }
}

function mergeMappings (state, destination, source, overridableKeys) {
  if (!common.isObject(source)) {
    throwError(state, 'cannot merge mappings; the provided source object is unacceptable')
  }

const sourceKeys = Object.keys(source)

for (let index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
    const key = sourceKeys[index]

if (state.maxTotalMergeKeys !== -1 && ++state.totalMergeKeys > state.maxTotalMergeKeys) {
      throwError(state, 'merge keys exceeded maxTotalMergeKeys (' + state.maxTotalMergeKeys + ')')
    }

if (!_hasOwnProperty.call(destination, key)) {
      setProperty(destination, key, source[key])
      overridableKeys[key] = true
    }
  }
}

function storeMappingPair (state, _result, overridableKeys, keyTag, keyNode, valueNode,
  startLine, startLineStart, startPos) {
  // The output is a plain object here, so keys can only be strings.
  // We need to convert keyNode to a string, but doing so can hang the process
  // (deeply nested arrays that explode exponentially using aliases).
  if (Array.isArray(keyNode)) {
    keyNode = Array.prototype.slice.call(keyNode)

for (let index = 0, quantity = keyNode.length; index < quantity; index += 1) {
      if (Array.isArray(keyNode[index])) {
        throwError(state, 'nested arrays are not supported inside keys')
      }

if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {
        keyNode[index] = '[object Object]'
      }
    }
  }

// Avoid code execution in load() via toString property
  // (still use its own toString for arrays, timestamps,
  // and whatever user schema extensions happen to have @@toStringTag)
  if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {
    keyNode = '[object Object]'
  }

keyNode = String(keyNode)

if (_result === null) {
    _result = {}
  }

if (keyTag === 'tag:yaml.org,2002:merge') {
    if (Array.isArray(valueNode)) {
      for (let index = 0, quantity = valueNode.length; index < quantity; index += 1) {
        mergeMappings(state, _result, valueNode[index], overridableKeys)
      }
    } else {
      mergeMappings(state, _result, valueNode, overridableKeys)
    }
  } else {
    if (!state.json &&
        !_hasOwnProperty.call(overridableKeys, keyNode) &&
        _hasOwnProperty.call(_result, keyNode)) {
      state.line = startLine || state.line
      state.lineStart = startLineStart || state.lineStart
      state.position = startPos || state.position
      throwError(state, 'duplicated mapping key')
    }

setProperty(_result, keyNode, valueNode)
    delete overridableKeys[keyNode]
  }

return _result
}

function readLineBreak (state) {
  const ch = state.input.charCodeAt(state.position)

if (ch === 0x0A/* LF */) {
    state.position++
  } else if (ch === 0x0D/* CR */) {
    state.position++
    if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {
      state.position++
    }
  } else {
    throwError(state, 'a line break is expected')
  }

state.line += 1
  state.lineStart = state.position
  state.firstTabInLine = -1
}

function skipSeparationSpace (state, allowComments, checkIndent) {
  let lineBreaks = 0
  let ch = state.input.charCodeAt(state.position)

while (ch !== 0) {
    while (isWhiteSpace(ch)) {
      if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) {
        state.firstTabInLine = state.position
      }
      ch = state.input.charCodeAt(++state.position)
    }

if (allowComments && ch === 0x23/* # */) {
      do {
        ch = state.input.charCodeAt(++state.position)
      } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0)
    }

if (isEol(ch)) {
      readLineBreak(state)

ch = state.input.charCodeAt(state.position)
      lineBreaks++
      state.lineIndent = 0

while (ch === 0x20/* Space */) {
        state.lineIndent++
        ch = state.input.charCodeAt(++state.position)
      }
    } else {
      break
    }
  }

if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
    throwWarning(state, 'deficient indentation')
  }

return lineBreaks
}

function testDocumentSeparator (state) {
  let _position = state.position
  let ch = state.input.charCodeAt(_position)

// Condition state.position === state.lineStart is tested
  // in parent on each call, for efficiency. No needs to test here again.
  if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&
      ch === state.input.charCodeAt(_position + 1) &&
      ch === state.input.charCodeAt(_position + 2)) {
    _position += 3

ch = state.input.charCodeAt(_position)

if (ch === 0 || isWsOrEol(ch)) {
      return true
    }
  }

return false
}

function writeFoldedLines (state, count) {
  if (count === 1) {
    state.result += ' '
  } else if (count > 1) {
    state.result += common.repeat('\n', count - 1)
  }
}

function readPlainScalar (state, nodeIndent, withinFlowCollection) {
  let captureStart
  let captureEnd
  let hasPendingContent
  let _line
  let _lineStart
  let _lineIndent
  const _kind = state.kind
  const _result = state.result

let ch = state.input.charCodeAt(state.position)

if (isWsOrEol(ch) ||
      isFlowIndicator(ch) ||
      ch === 0x23/* # */ ||
      ch === 0x26/* & */ ||
      ch === 0x2A/* * */ ||
      ch === 0x21/* ! */ ||
      ch === 0x7C/* | */ ||
      ch === 0x3E/* > */ ||
      ch === 0x27/* ' */ ||
      ch === 0x22/* " */ ||
      ch === 0x25/* % */ ||
      ch === 0x40/* @ */ ||
      ch === 0x60/* ` */) {
    return false
  }

if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
    const following = state.input.charCodeAt(state.position + 1)

if (isWsOrEol(following) ||
        (withinFlowCollection && isFlowIndicator(following))) {
      return false
    }
  }

state.kind = 'scalar'
  state.result = ''
  captureStart = captureEnd = state.position
  hasPendingContent = false

while (ch !== 0) {
    if (ch === 0x3A/* : */) {
      const following = state.input.charCodeAt(state.position + 1)

if (isWsOrEol(following) ||
          (withinFlowCollection && isFlowIndicator(following))) {
        break
      }
    } else if (ch === 0x23/* # */) {
      const preceding = state.input.charCodeAt(state.position - 1)

if (isWsOrEol(preceding)) {
        break
      }
    } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
               (withinFlowCollection && isFlowIndicator(ch))) {
      break
    } else if (isEol(ch)) {
      _line = state.line
      _lineStart = state.lineStart
      _lineIndent = state.lineIndent
      skipSeparationSpace(state, false, -1)

if (state.lineIndent >= nodeIndent) {
        hasPendingContent = true
        ch = state.input.charCodeAt(state.position)
        continue
      } else {
        state.position = captureEnd
        state.line = _line
        state.lineStart = _lineStart
        state.lineIndent = _lineIndent
        break
      }
    }

if (hasPendingContent) {
      captureSegment(state, captureStart, captureEnd, false)
      writeFoldedLines(state, state.line - _line)
      captureStart = captureEnd = state.position
      hasPendingContent = false
    }

if (!isWhiteSpace(ch)) {
      captureEnd = state.position + 1
    }

ch = state.input.charCodeAt(++state.position)
  }

captureSegment(state, captureStart, captureEnd, false)

if (state.result) {
    return true
  }

state.kind = _kind
  state.result = _result
  return false
}

function readSingleQuotedScalar (state, nodeIndent) {
  let captureStart
  let captureEnd

let ch = state.input.charCodeAt(state.position)

if (ch !== 0x27/* ' */) {
    return false
  }

state.kind = 'scalar'
  state.result = ''
  state.position++
  captureStart = captureEnd = state.position

while ((ch = state.input.charCodeAt(state.position)) !== 0) {
    if (ch === 0x27/* ' */) {
      captureSegment(state, captureStart, state.position, true)
      ch = state.input.charCodeAt(++state.position)

if (ch === 0x27/* ' */) {
        captureStart = state.position
        state.position++
        captureEnd = state.position
      } else {
        return true
      }
    } else if (isEol(ch)) {
      captureSegment(state, captureStart, captureEnd, true)
      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent))
      captureStart = captureEnd = state.position
    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
      throwError(state, 'unexpected end of the document within a single quoted scalar')
    } else {
      state.position++
      if (!isWhiteSpace(ch)) {
        captureEnd = state.position
      }
    }
  }

throwError(state, 'unexpected end of the stream within a single quoted scalar')
}

function readDoubleQuotedScalar (state, nodeIndent) {
  let captureStart
  let captureEnd
  let tmp

let ch = state.input.charCodeAt(state.position)

if (ch !== 0x22/* " */) {
    return false
  }

state.kind = 'scalar'
  state.result = ''
  state.position++
  captureStart = captureEnd = state.position

while ((ch = state.input.charCodeAt(state.position)) !== 0) {
    if (ch === 0x22/* " */) {
      captureSegment(state, captureStart, state.position, true)
      state.position++
      return true
    } else if (ch === 0x5C/* \ */) {
      captureSegment(state, captureStart, state.position, true)
      ch = state.input.charCodeAt(++state.position)

if (isEol(ch)) {
        skipSeparationSpace(state, false, nodeIndent)

// TODO: rework to inline fn with no type cast?
      } else if (ch < 256 && simpleEscapeCheck[ch]) {
        state.result += simpleEscapeMap[ch]
        state.position++
      } else if ((tmp = escapedHexLen(ch)) > 0) {
        let hexLength = tmp
        let hexResult = 0

for (; hexLength > 0; hexLength--) {
          ch = state.input.charCodeAt(++state.position)

if ((tmp = fromHexCode(ch)) >= 0) {
            hexResult = (hexResult << 4) + tmp
          } else {
            throwError(state, 'expected hexadecimal character')
          }
        }

state.result += charFromCodepoint(hexResult)

state.position++
      } else {
        throwError(state, 'unknown escape sequence')
      }

captureStart = captureEnd = state.position
    } else if (isEol(ch)) {
      captureSegment(state, captureStart, captureEnd, true)
      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent))
      captureStart = captureEnd = state.position
    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
      throwError(state, 'unexpected end of the document within a double quoted scalar')
    } else {
      state.position++
      if (!isWhiteSpace(ch)) {
        captureEnd = state.position
      }
    }
  }

throwError(state, 'unexpected end of the stream within a double quoted scalar')
}

function readFlowCollection (state, nodeIndent) {
  let readNext = true
  let _line
  let _lineStart
  let _pos
  const _tag = state.tag
  let _result
  const _anchor = state.anchor
  let terminator
  let isPair
  let isExplicitPair
  let isMapping
  const overridableKeys = Object.create(null)
  let keyNode
  let keyTag
  let valueNode

let ch = state.input.charCodeAt(state.position)

if (ch === 0x5B/* [ */) {
    terminator = 0x5D/* ] */
    isMapping = false
    _result = []
  } else if (ch === 0x7B/* { */) {
    terminator = 0x7D/* } */
    isMapping = true
    _result = {}
  } else {
    return false
  }

if (state.anchor !== null) {
    storeAnchor(state, state.anchor, _result)
  }

ch = state.input.charCodeAt(++state.position)

while (ch !== 0) {
    skipSeparationSpace(state, true, nodeIndent)

ch = state.input.charCodeAt(state.position)

if (ch === terminator) {
      state.position++
      state.tag = _tag
      state.anchor = _anchor
      state.kind = isMapping ? 'mapping' : 'sequence'
      state.result = _result
      return true
    } else if (!readNext) {
      throwError(state, 'missed comma between flow collection entries')
    } else if (ch === 0x2C/* , */) {
      // "flow collection entries can never be completely empty", as per YAML 1.2, section 7.4
      throwError(state, "expected the node content, but found ','")
    }

keyTag = keyNode = valueNode = null
    isPair = isExplicitPair = false

if (ch === 0x3F/* ? */) {
      const following = state.input.charCodeAt(state.position + 1)

if (isWsOrEol(following)) {
        isPair = isExplicitPair = true
        state.position++
        skipSeparationSpace(state, true, nodeIndent)
      }
    }

_line = state.line // Save the current line.
    _lineStart = state.lineStart
    _pos = state.position
    composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true)
    keyTag = state.tag
    keyNode = state.result
    skipSeparationSpace(state, true, nodeIndent)

ch = state.input.charCodeAt(state.position)

if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {
      isPair = true
      ch = state.input.charCodeAt(++state.position)
      skipSeparationSpace(state, true, nodeIndent)
      composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true)
      valueNode = state.result
    }

if (isMapping) {
      storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos)
    } else if (isPair) {
      _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos))
    } else {
      _result.push(keyNode)
    }

skipSeparationSpace(state, true, nodeIndent)

ch = state.input.charCodeAt(state.position)

if (ch === 0x2C/* , */) {
      readNext = true
      ch = state.input.charCodeAt(++state.position)
    } else {
      readNext = false
    }
  }

throwError(state, 'unexpected end of the stream within a flow collection')
}

function readBlockScalar (state, nodeIndent) {
  let folding
  let chomping = CHOMPING_CLIP
  let didReadContent = false
  let detectedIndent = false
  let textIndent = nodeIndent
  let emptyLines = 0
  let atMoreIndented = false
  let tmp

let ch = state.input.charCodeAt(state.position)

if (ch === 0x7C/* | */) {
    folding = false
  } else if (ch === 0x3E/* > */) {
    folding = true
  } else {
    return false
  }

state.kind = 'scalar'
  state.result = ''

while (ch !== 0) {
    ch = state.input.charCodeAt(++state.position)

if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {
      if (CHOMPING_CLIP === chomping) {
        chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP
      } else {
        throwError(state, 'repeat of a chomping mode identifier')
      }
    } else if ((tmp = fromDecimalCode(ch)) >= 0) {
      if (tmp === 0) {
        throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one')
      } else if (!detectedIndent) {
        textIndent = nodeIndent + tmp - 1
        detectedIndent = true
      } else {
        throwError(state, 'repeat of an indentation width identifier')
      }
    } else {
      break
    }
  }

if (isWhiteSpace(ch)) {
    do { ch = state.input.charCodeAt(++state.position) }
    while (isWhiteSpace(ch))

if (ch === 0x23/* # */) {
      do { ch = state.input.charCodeAt(++state.position) }
      while (!isEol(ch) && (ch !== 0))
    }
  }

while (ch !== 0) {
    readLineBreak(state)
    state.lineIndent = 0

ch = state.input.charCodeAt(state.position)

// eslint-disable-next-line no-unmodified-loop-condition
    while ((!detectedIndent || state.lineIndent < textIndent) &&
           (ch === 0x20/* Space */)) {
      state.lineIndent++
      ch = state.input.charCodeAt(++state.position)
    }

if (!detectedIndent && state.lineIndent > textIndent) {
      textIndent = state.lineIndent
    }

if (isEol(ch)) {
      emptyLines++
      continue
    }

if (!detectedIndent && textIndent === 0) {
      throwError(state, 'missing indentation for block scalar')
    }

// End of the scalar.
    if (state.lineIndent < textIndent) {
      // Perform the chomping.
      if (chomping === CHOMPING_KEEP) {
        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines)
      } else if (chomping === CHOMPING_CLIP) {
        if (didReadContent) { // i.e. only if the scalar is not empty.
          state.result += '\n'
        }
      }

// Break this `while` cycle and go to the funciton's epilogue.
      break
    }

// Folded style: use fancy rules to handle line breaks.
    if (folding) {
      // Lines starting with white space characters (more-indented lines) are not folded.
      if (isWhiteSpace(ch)) {
        atMoreIndented = true
        // except for the first content line (cf. Example 8.1)
        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines)

// End of more-indented block.
      } else if (atMoreIndented) {
        atMoreIndented = false
        state.result += common.repeat('\n', emptyLines + 1)

// Just one line break - perceive as the same line.
      } else if (emptyLines === 0) {
        if (didReadContent) { // i.e. only if we have already read some scalar content.
          state.result += ' '
        }

// Several line breaks - perceive as different lines.
      } else {
        state.result += common.repeat('\n', emptyLines)
      }

// Literal style: just add exact number of line breaks between content lines.
    } else {
      // Keep all line breaks except the header line break.
      state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines)
    }

didReadContent = true
    detectedIndent = true
    emptyLines = 0
    const captureStart = state.position

while (!isEol(ch) && (ch !== 0)) {
      ch = state.input.charCodeAt(++state.position)
    }

captureSegment(state, captureStart, state.position, false)
  }

return true
}

function readBlockSequence (state, nodeIndent) {
  const _tag = state.tag
  const _anchor = state.anchor
  const _result = []
  let detected = false

// there is a leading tab before this token, so it can't be a block sequence/mapping;
  // it can still be flow sequence/mapping or a scalar
  if (state.firstTabInLine !== -1) return false

if (state.anchor !== null) {
    storeAnchor(state, state.anchor, _result)
  }

let ch = state.input.charCodeAt(state.position)

while (ch !== 0) {
    if (state.firstTabInLine !== -1) {
      state.position = state.firstTabInLine
      throwError(state, 'tab characters must not be used in indentation')
    }

if (ch !== 0x2D/* - */) {
      break
    }

const following = state.input.charCodeAt(state.position + 1)

if (!isWsOrEol(following)) {
      break
    }

detected = true
    state.position++

if (skipSeparationSpace(state, true, -1)) {
      if (state.lineIndent <= nodeIndent) {
        _result.push(null)
        ch = state.input.charCodeAt(state.position)
        continue
      }
    }

const _line = state.line
    composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true)
    _result.push(state.result)
    skipSeparationSpace(state, true, -1)

ch = state.input.charCodeAt(state.position)

if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
      throwError(state, 'bad indentation of a sequence entry')
    } else if (state.lineIndent < nodeIndent) {
      break
    }
  }

if (detected) {
    state.tag = _tag
    state.anchor = _anchor
    state.kind = 'sequence'
    state.result = _result
    return true
  }
  return false
}

function readBlockMapping (state, nodeIndent, flowIndent) {
  let allowCompact
  let _keyLine
  let _keyLineStart
  let _keyPos
  const _tag = state.tag
  const _anchor = state.anchor
  const _result = {}
  const overridableKeys = Object.create(null)
  let keyTag = null
  let keyNode = null
  let valueNode = null
  let atExplicitKey = false
  let detected = false

// there is a leading tab before this token, so it can't be a block sequence/mapping;
  // it can still be flow sequence/mapping or a scalar
  if (state.firstTabInLine !== -1) return false

if (state.anchor !== null) {
    storeAnchor(state, state.anchor, _result)
  }

let ch = state.input.charCodeAt(state.position)

while (ch !== 0) {
    if (!atExplicitKey && state.firstTabInLine !== -1) {
      state.position = state.firstTabInLine
      throwError(state, 'tab characters must not be used in indentation')
    }

const following = state.input.charCodeAt(state.position + 1)
    const _line = state.line // Save the current line.

//
    // Explicit notation case. There are two separate blocks:
    // first for the key (denoted by "?") and second for the value (denoted by ":")
    //
    if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && isWsOrEol(following)) {
      if (ch === 0x3F/* ? */) {
        if (atExplicitKey) {
          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos)
          keyTag = keyNode = valueNode = null
        }

detected = true
        atExplicitKey = true
        allowCompact = true
      } else if (atExplicitKey) {
        // i.e. 0x3A/* : */ === character after the explicit key.
        atExplicitKey = false
        allowCompact = true
      } else {
        throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line')
      }

state.position += 1
      ch = following

//
    // Implicit notation case. Flow-style node as the key first, then ":", and the value.
    //
    } else {
      _keyLine = state.line
      _keyLineStart = state.lineStart
      _keyPos = state.position

if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
        // Neither implicit nor explicit notation.
        // Reading is done. Go to the epilogue.
        break
      }

if (state.line === _line) {
        ch = state.input.charCodeAt(state.position)

while (isWhiteSpace(ch)) {
          ch = state.input.charCodeAt(++state.position)
        }

if (ch === 0x3A/* : */) {
          ch = state.input.charCodeAt(++state.position)

if (!isWsOrEol(ch)) {
            throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping')
          }

if (atExplicitKey) {
            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos)
            keyTag = keyNode = valueNode = null
          }

detected = true
          atExplicitKey = false
          allowCompact = false
          keyTag = state.tag
          keyNode = state.result
        } else if (detected) {
          throwError(state, 'can not read an implicit mapping pair; a colon is missed')
        } else {
          state.tag = _tag
          state.anchor = _anchor
          return true // Keep the result of `composeNode`.
        }
      } else if (detected) {
        throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key')
      } else {
        state.tag = _tag
        state.anchor = _anchor
        return true // Keep the result of `composeNode`.
      }
    }

//
    // Common reading code for both explicit and implicit notations.
    //
    if (state.line === _line || state.lineIndent > nodeIndent) {
      if (atExplicitKey) {
        _keyLine = state.line
        _keyLineStart = state.lineStart
        _keyPos = state.position
      }

if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
        if (atExplicitKey) {
          keyNode = state.result
        } else {
          valueNode = state.result
        }
      }

if (!atExplicitKey) {
        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos)
        keyTag = keyNode = valueNode = null
      }

skipSeparationSpace(state, true, -1)
      ch = state.input.charCodeAt(state.position)
    }

if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
      throwError(state, 'bad indentation of a mapping entry')
    } else if (state.lineIndent < nodeIndent) {
      break
    }
  }

//
  // Epilogue.
  //

// Special case: last mapping's node contains only the key in explicit notation.
  if (atExplicitKey) {
    storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos)
  }

// Expose the resulting mapping.
  if (detected) {
    state.tag = _tag
    state.anchor = _anchor
    state.kind = 'mapping'
    state.result = _result
  }

return detected
}

function readTagProperty (state) {
  let isVerbatim = false
  let isNamed = false
  let tagHandle
  let tagName

let ch = state.input.charCodeAt(state.position)

if (ch !== 0x21/* ! */) return false

if (state.tag !== null) {
    throwError(state, 'duplication of a tag property')
  }

ch = state.input.charCodeAt(++state.position)

if (ch === 0x3C/* < */) {
    isVerbatim = true
    ch = state.input.charCodeAt(++state.position)
  } else if (ch === 0x21/* ! */) {
    isNamed = true
    tagHandle = '!!'
    ch = state.input.charCodeAt(++state.position)
  } else {
    tagHandle = '!'
  }

let _position = state.position

if (isVerbatim) {
    do { ch = state.input.charCodeAt(++state.position) }
    while (ch !== 0 && ch !== 0x3E/* > */)

if (state.position < state.length) {
      tagName = state.input.slice(_position, state.position)
      ch = state.input.charCodeAt(++state.position)
    } else {
      throwError(state, 'unexpected end of the stream within a verbatim tag')
    }
  } else {
    while (ch !== 0 && !isWsOrEol(ch)) {
      if (ch === 0x21/* ! */) {
        if (!isNamed) {
          tagHandle = state.input.slice(_position - 1, state.position + 1)

if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
            throwError(state, 'named tag handle cannot contain such characters')
          }

isNamed = true
          _position = state.position + 1
        } else {
          throwError(state, 'tag suffix cannot contain exclamation marks')
        }
      }

ch = state.input.charCodeAt(++state.position)
    }

tagName = state.input.slice(_position, state.position)

if (PATTERN_FLOW_INDICATORS.test(tagName)) {
      throwError(state, 'tag suffix cannot contain flow indicator characters')
    }
  }

if (tagName && !PATTERN_TAG_URI.test(tagName)) {
    throwError(state, 'tag name cannot contain such characters: ' + tagName)
  }

try {
    tagName = decodeURIComponent(tagName)
  } catch (err) {
    throwError(state, 'tag name is malformed: ' + tagName)
  }

if (isVerbatim) {
    state.tag = tagName
  } else if (_hasOwnProperty.call(state.tagMap, tagHandle)) {
    state.tag = state.tagMap[tagHandle] + tagName
  } else if (tagHandle === '!') {
    state.tag = '!' + tagName
  } else if (tagHandle === '!!') {
    state.tag = 'tag:yaml.org,2002:' + tagName
  } else {
    throwError(state, 'undeclared tag handle "' + tagHandle + '"')
  }

return true
}

function readAnchorProperty (state) {
  let ch = state.input.charCodeAt(state.position)

if (ch !== 0x26/* & */) return false

if (state.anchor !== null) {
    throwError(state, 'duplication of an anchor property')
  }

ch = state.input.charCodeAt(++state.position)
  const _position = state.position

while (ch !== 0 && !isWsOrEol(ch) && !isFlowIndicator(ch)) {
    ch = state.input.charCodeAt(++state.position)
  }

if (state.position === _position) {
    throwError(state, 'name of an anchor node must contain at least one character')
  }

state.anchor = state.input.slice(_position, state.position)
  return true
}

function readAlias (state) {
  let ch = state.input.charCodeAt(state.position)

if (ch !== 0x2A/* * */) return false

ch = state.input.charCodeAt(++state.position)
  const _position = state.position

while (ch !== 0 && !isWsOrEol(ch) && !isFlowIndicator(ch)) {
    ch = state.input.charCodeAt(++state.position)
  }

if (state.position === _position) {
    throwError(state, 'name of an alias node must contain at least one character')
  }

const alias = state.input.slice(_position, state.position)

if (!_hasOwnProperty.call(state.anchorMap, alias)) {
    throwError(state, 'unidentified alias "' + alias + '"')
  }

state.result = state.anchorMap[alias]
  skipSeparationSpace(state, true, -1)
  return true
}

function tryReadBlockMappingFromProperty (state, propertyStart, nodeIndent, flowIndent) {
  const fallbackState = snapshotState(state)

beginAnchorTransaction(state)
  restoreState(state, propertyStart)

// Re-read the leading properties as part of the first implicit key, not as
  // properties of the current node.
  state.tag = null
  state.anchor = null
  state.kind = null
  state.result = null

if (readBlockMapping(state, nodeIndent, flowIndent) && state.kind === 'mapping') {
    commitAnchorTransaction(state)
    return true
  }

rollbackAnchorTransaction(state)
  restoreState(state, fallbackState)
  return false
}

function composeNode (state, parentIndent, nodeContext, allowToSeek, allowCompact) {
  let allowBlockScalars
  let allowBlockCollections
  let indentStatus = 1 // 1: this>parent, 0: this=parent, -1: this<parent
  let atNewLine = false
  let hasContent = false
  let propertyStart = null
  let type
  let flowIndent
  let blockIndent

if (state.depth >= state.maxDepth) {
    throwError(state, 'nesting exceeded maxDepth (' + state.maxDepth + ')')
  }

state.depth += 1

if (state.listener !== null) {
    state.listener('open', state)
  }

state.tag = null
  state.anchor = null
  state.kind = null
  state.result = null

const allowBlockStyles = allowBlockScalars = allowBlockCollections =
    CONTEXT_BLOCK_OUT === nodeContext ||
    CONTEXT_BLOCK_IN === nodeContext

if (allowToSeek) {
    if (skipSeparationSpace(state, true, -1)) {
      atNewLine = true

if (state.lineIndent > parentIndent) {
        indentStatus = 1
      } else if (state.lineIndent === parentIndent) {
        indentStatus = 0
      } else if (state.lineIndent < parentIndent) {
        indentStatus = -1
      }
    }
  }

if (indentStatus === 1) {
    while (true) {
      const ch = state.input.charCodeAt(state.position)
      const propertyState = snapshotState(state)

// A duplicate property token after a line break can be the first key of
      // a nested block mapping, e.g. `!!map\n  !!str key: value`.
      if (atNewLine &&
          ((ch === 0x21/* ! */ && state.tag !== null) ||
           (ch === 0x26/* & */ && state.anchor !== null))) {
        break
      }

if (!readTagProperty(state) && !readAnchorProperty(state)) {
        break
      }

if (propertyStart === null) {
        propertyStart = propertyState
      }

if (skipSeparationSpace(state, true, -1)) {
        atNewLine = true
        allowBlockCollections = allowBlockStyles

if (state.lineIndent > parentIndent) {
          indentStatus = 1
        } else if (state.lineIndent === parentIndent) {
          indentStatus = 0
        } else if (state.lineIndent < parentIndent) {
          indentStatus = -1
        }
      } else {
        allowBlockCollections = false
      }
    }
  }

if (allowBlockCollections) {
    allowBlockCollections = atNewLine || allowCompact
  }

if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
    if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
      flowIndent = parentIndent
    } else {
      flowIndent = parentIndent + 1
    }

blockIndent = state.position - state.lineStart

if (indentStatus === 1) {
      if ((allowBlockCollections &&
          (readBlockSequence(state, blockIndent) || readBlockMapping(state, blockIndent, flowIndent))) ||
          readFlowCollection(state, flowIndent)) {
        hasContent = true
      } else {
        const ch = state.input.charCodeAt(state.position)

if (propertyStart !== null && allowBlockStyles && !allowBlockCollections &&
            ch !== 0x7C/* | */ && ch !== 0x3E/* > */ &&
            tryReadBlockMappingFromProperty(
              state,
              propertyStart,
              propertyStart.position - propertyStart.lineStart,
              flowIndent
            )) {
          hasContent = true
        } else if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||
            readSingleQuotedScalar(state, flowIndent) ||
            readDoubleQuotedScalar(state, flowIndent)) {
          hasContent = true
        } else if (readAlias(state)) {
          hasContent = true

if (state.tag !== null || state.anchor !== null) {
            throwError(state, 'alias node should not have any properties')
          }
        } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
          hasContent = true

if (state.tag === null) {
            state.tag = '?'
          }
        }

if (state.anchor !== null) {
          storeAnchor(state, state.anchor, state.result)
        }
      }
    } else if (indentStatus === 0) {
      // Special case: block sequences are allowed to have same indentation level as the parent.
      // http://www.yaml.org/spec/1.2/spec.html#id2799784
      hasContent = allowBlockCollections && readBlockSequence(state, blockIndent)
    }
  }

if (state.tag === null) {
    if (state.anchor !== null) {
      storeAnchor(state, state.anchor, state.result)
    }
  } else if (state.tag === '?') {
    // Implicit resolving is not allowed for non-scalar types, and '?'
    // non-specific tag is only automatically assigned to plain scalars.
    //
    // We only need to check kind conformity in case user explicitly assigns '?'
    // tag, for example like this: "!<?> [0]"
    //
    if (state.result !== null && state.kind !== 'scalar') {
      throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"')
    }

for (let typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
      type = state.implicitTypes[typeIndex]

if (type.resolve(state.result)) { // `state.result` updated in resolver if matched
        state.result = type.construct(state.result)
        state.tag = type.tag
        if (state.anchor !== null) {
          storeAnchor(state, state.anchor, state.result)
        }
        break
      }
    }
  } else if (state.tag !== '!') {
    if (_hasOwnProperty.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
      type = state.typeMap[state.kind || 'fallback'][state.tag]
    } else {
      // looking for multi type
      type = null
      const typeList = state.typeMap.multi[state.kind || 'fallback']

for (let typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
        if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
          type = typeList[typeIndex]
          break
        }
      }
    }

if (!type) {
      throwError(state, 'unknown tag !<' + state.tag + '>')
    }

if (state.result !== null && type.kind !== state.kind) {
      throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"')
    }

if (!type.resolve(state.result, state.tag)) { // `state.result` updated in resolver if matched
      throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag')
    } else {
      state.result = type.construct(state.result, state.tag)
      if (state.anchor !== null) {
        storeAnchor(state, state.anchor, state.result)
      }
    }
  }

if (state.listener !== null) {
    state.listener('close', state)
  }

state.depth -= 1
  return state.tag !== null || state.anchor !== null || hasContent
}

function readDocument (state) {
  const documentStart = state.position
  let hasDirectives = false
  let ch

state.version = null
  state.checkLineBreaks = state.legacy
  state.tagMap = Object.create(null)
  state.anchorMap = Object.create(null)

while ((ch = state.input.charCodeAt(state.position)) !== 0) {
    skipSeparationSpace(state, true, -1)

ch = state.input.charCodeAt(state.position)

if (state.lineIndent > 0 || ch !== 0x25/* % */) {
      break
    }

hasDirectives = true
    ch = state.input.charCodeAt(++state.position)
    let _position = state.position

while (ch !== 0 && !isWsOrEol(ch)) {
      ch = state.input.charCodeAt(++state.position)
    }

const directiveName = state.input.slice(_position, state.position)
    const directiveArgs = []

if (directiveName.length < 1) {
      throwError(state, 'directive name must not be less than one character in length')
    }

while (ch !== 0) {
      while (isWhiteSpace(ch)) {
        ch = state.input.charCodeAt(++state.position)
      }

if (ch === 0x23/* # */) {
        do { ch = state.input.charCodeAt(++state.position) }
        while (ch !== 0 && !isEol(ch))
        break
      }

if (isEol(ch)) break

_position = state.position

while (ch !== 0 && !isWsOrEol(ch)) {
        ch = state.input.charCodeAt(++state.position)
      }

directiveArgs.push(state.input.slice(_position, state.position))
    }

if (ch !== 0) readLineBreak(state)

if (_hasOwnProperty.call(directiveHandlers, directiveName)) {
      directiveHandlers[directiveName](state, directiveName, directiveArgs)
    } else {
      throwWarning(state, 'unknown document directive "' + directiveName + '"')
    }
  }

skipSeparationSpace(state, true, -1)

if (state.lineIndent === 0 &&
      state.input.charCodeAt(state.position) === 0x2D/* - */ &&
      state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&
      state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {
    state.position += 3
    skipSeparationSpace(state, true, -1)
  } else if (hasDirectives) {
    throwError(state, 'directives end mark is expected')
  }

composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true)
  skipSeparationSpace(state, true, -1)

if (state.checkLineBreaks &&
      PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
    throwWarning(state, 'non-ASCII line breaks are interpreted as content')
  }

state.documents.push(state.result)

if (state.position === state.lineStart && testDocumentSeparator(state)) {
    if (state.input.charCodeAt(state.position) === 0x2E/* . */) {
      state.position += 3
      skipSeparationSpace(state, true, -1)
    }
    return
  }

if (state.position < (state.length - 1)) {
    throwError(state, 'end of the stream or a document separator is expected')
  }
}

function loadDocuments (input, options) {
  input = String(input)
  options = options || {}

if (input.length !== 0) {
    // Add tailing `\n` if not exists
    if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&
        input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {
      input += '\n'
    }

// Strip BOM
    if (input.charCodeAt(0) === 0xFEFF) {
      input = input.slice(1)
    }
  }

const state = new State(input, options)

const nullpos = input.indexOf('\0')

if (nullpos !== -1) {
    state.position = nullpos
    throwError(state, 'null byte is not allowed in input')
  }

// Use 0 as string terminator. That significantly simplifies bounds check.
  state.input += '\0'

while (state.input.charCodeAt(state.position) === 0x20/* Space */) {
    state.lineIndent += 1
    state.position += 1
  }

while (state.position < (state.length - 1)) {
    readDocument(state)
  }

return state.documents
}

function loadAll (input, iterator, options) {
  if (iterator !== null && typeof iterator === 'object' && typeof options === 'undefined') {
    options = iterator
    iterator = null
  }

const documents = loadDocuments(input, options)

if (typeof iterator !== 'function') {
    return documents
  }

for (let index = 0, length = documents.length; index < length; index += 1) {
    iterator(documents[index])
  }
}

function load (input, options) {
  const documents = loadDocuments(input, options)

if (documents.length === 0) {
    return undefined
  } else if (documents.length === 1) {
    return documents[0]
  }
  throw new YAMLException('expected a single document in the stream, but found more')
}

module.exports.loadAll = loadAll
module.exports.load = load

cmd: