Module: RubyRunJs::JsArrayMethods

Extended by:
Helper
Defined in:
lib/ruby_run_js/object_methods/js_array.rb

Class Method Summary collapse

Methods included from Helper

check_object, get_member, get_member_dot, is_accessor_descriptor, is_callable, is_data_descriptor, is_generic_descriptor, is_primitive, make_error, strict_equality

Methods included from ConversionHelper

#convert_to_js_type, #to_boolean, #to_int32, #to_integer, #to_number, #to_object, #to_primitive, #to_string, #to_uint16, #to_uint32

Class Method Details

._internal_sort(a, b, cmpfn) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 180

def _internal_sort(a, b, cmpfn)
  if a.nil?
    return b.nil? ? 0 : 1
  end
  if b.nil?
    return a.nil? ? 0 : -1
  end
  if a == undefined
    return b == undefined ? 0 : 1
  end
  if b == undefined
    return a == undefined ? 0 : -1
  end
  if cmpfn != undefined
    unless is_callable(cmpfn)
      raise make_error('TypeError', 'the compare function used by Array.sort is not callable')
    end
    return cmpfn.call(undefined, [a, b])
  end
  to_string(a) <=> to_string(b)
end

._move_item(array, from, to) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 59

def _move_item(array, from, to)
  from_s = from.to_s
  to_s = to.to_s
  if array.has_property(from_s)
    array.put(to_s, array.get(from_s), true)
  else
    array.delete(to_s, true)
  end
end

._to_array(obj, builtin) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 69

def _to_array(obj, builtin)
  array = to_object(obj, builtin)
  return array, to_uint32(array.get('length'))
end

.constructor(builtin, this, *args) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 9

def constructor(builtin, this, *args)
  constructor_new(builtin, this, *args)
end

.constructor_isArray(builtin, this, arg) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 26

def constructor_isArray(builtin, this, arg)
  arg.js_type == :Object && arg.js_class == 'Array'
end

.constructor_new(builtin, this, *args) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 13

def constructor_new(builtin, this, *args)
  if args.length == 1 && args[0].js_type == :Number
    if to_uint32(args[0]) == args[0]
      return builtin.new_array(to_uint32(args[0]))
    else
      raise make_error('RangeError', 'the length of Array is not integer')
    end
  end
  array = builtin.new_array
  array.set_items(args)
  array
end

.prototype_concat(builtin, this, *args) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 74

def prototype_concat(builtin, this, *args)
  array = to_object(this, builtin)
  result = []
  ([array] + args).each do |item|
    if item.js_type == :Object && item.js_class == 'Array'
      (0...item.get('length')).each do |i|
        i_str = i.to_s
        if item.has_property(i_str)
          result.append(item.get(i_str))
        end
      end
    else
      result.append(item)
    end
  end
  res_array = builtin.new_array
  res_array.set_items(result)
  res_array
end

.prototype_every(builtin, this, callbackfn, thisArg) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 306

def prototype_every(builtin, this, callbackfn, thisArg)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  len.times do |k|
    if array.has_property(k.to_s)
      unless to_boolean(callbackfn.call(thisArg, [array.get(k.to_s), k.to_f, array]))
        return false
      end
    end
  end
  true
end

.prototype_filter(builtin, this, callbackfn, thisArg) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 364

def prototype_filter(builtin, this, callbackfn, thisArg)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  res = []
  len.times do |k|
    if array.has_property(k.to_s)
      kValue = array.get(k.to_s)
      if to_boolean(callbackfn.call(thisArg, [kValue, k.to_f, array]))
        res << kValue
      end
    end
  end
  new_array = builtin.new_array
  new_array.set_items(res)
  new_array
end

.prototype_forEach(builtin, this, callbackfn, thisArg) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 336

def prototype_forEach(builtin, this, callbackfn, thisArg)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  len.times do |k|
    if array.has_property(k.to_s)
      callbackfn.call(thisArg, [array.get(k.to_s), k.to_f, array])
    end
  end
  undefined
end

.prototype_indexOf(builtin, this, searchElement, *fromIndex) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 263

def prototype_indexOf(builtin, this, searchElement, *fromIndex)
  array, len = _to_array(this, builtin)
  return -1.0 if len == 0
  fromIndex = fromIndex.length > 0 ? to_integer(fromIndex[0]) : 0
  if fromIndex >= len
    return -1.0
  elsif fromIndex >= 0
    k = fromIndex
  else
    k = len + fromIndex
    k = k >= 0 ? k : 0
  end
  while k < len
    if array.has_property(k.to_s)
      if strict_equality(array.get(k.to_s), searchElement)
        return k.to_f
      end
    end
    k += 1
  end
  -1.0
end

.prototype_join(builtin, this, separator) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 94

def prototype_join(builtin, this, separator)
  array, len = _to_array(this, builtin)
  if separator == undefined
    separator = ','
  end
  sep = to_string(separator)
  res = []
  array.get_items.each do |item|
    res << ((item == undefined || item == null) ? '' : to_string(item))
  end
  res.join(sep)
end

.prototype_lastIndexOf(builtin, this, searchElement, *fromIndex) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 286

def prototype_lastIndexOf(builtin, this, searchElement, *fromIndex)
  array, len = _to_array(this, builtin)
  return -1.0 if len == 0
  fromIndex = fromIndex.length > 0 ? to_integer(fromIndex[0]) : len - 1
  if fromIndex >= 0
    k = [fromIndex, len - 1].min
  else
    k = len + fromIndex
  end
  while k >= 0
    if array.has_property(k.to_s)
      if strict_equality(array.get(k.to_s), searchElement)
        return k.to_f
      end
    end
    k -= 1
  end
  -1.0
end

.prototype_map(builtin, this, callbackfn, thisArg) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 349

def prototype_map(builtin, this, callbackfn, thisArg)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  new_array = builtin.new_array(len)
  len.times do |k|
    if array.has_property(k.to_s)
      value = callbackfn.call(thisArg, [array.get(k.to_s), k.to_f, array])
      new_array.put(k.to_s, value, false)
    end
  end
  new_array
end

.prototype_pop(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 107

def prototype_pop(builtin, this)
  array, len = _to_array(this, builtin)
  if len == 0
    array.put('length', 0.0, true)
    return undefined
  end
  len = (len - 1).to_f
  index = to_string(len)
  element = array.get(index)
  array.delete(index, true)
  array.put('length', len, true)
  element
end

.prototype_push(builtin, this, *args) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 121

def prototype_push(builtin, this, *args)
  array, len = _to_array(this, builtin)
  args.each do |item|
    array.put(len.to_s, item, true)
    len += 1
  end
  array.put('length', len.to_f, true)
  len.to_f
end

.prototype_reduce(builtin, this, callbackfn, *initialValue) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 383

def prototype_reduce(builtin, this, callbackfn, *initialValue)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  if len == 0 && initialValue.length == 0
    raise make_error('TypeError', 'Reduce of empty array with no initial value')
  end

  k = 0

  if initialValue.length > 0
    accumulator = initialValue[0]
  else
    k_present = false
    while k < len && !k_present
      if array.has_property(k.to_s)
        accumulator = array.get(k.to_s)
      else
        k_present = true
      end
      k += 1
    end
    unless k_present
      raise make_error('TypeError', 'Reduce of empty array with no initial value')
    end
  end
  while k < len
    if array.has_property(k.to_s)
      accumulator = callbackfn.call(undefined, [accumulator, array.get(k.to_s), k.to_f, array])
    end
    k += 1
  end
  accumulator
end

.prototype_reduceRight(builtin, this, callbackfn, *initialValue) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 419

def prototype_reduceRight(builtin, this, callbackfn, *initialValue)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  if len == 0 && initialValue.length == 0
    raise make_error('TypeError', 'Reduce of empty array with no initial value')
  end

  k = len - 1

  if initialValue.length > 0
    accumulator = initialValue[0]
  else
    k_present = false
    while k >= 0 && !k_present
      if array.has_property(k.to_s)
        accumulator = array.get(k.to_s)
      else
        k_present = true
      end
      k -= 1
    end
    unless k_present
      raise make_error('TypeError', 'Reduce of empty array with no initial value')
    end
  end
  while k >= 0
    if array.has_property(k.to_s)
      accumulator = callbackfn.call(undefined, [accumulator, array.get(k.to_s), k.to_f, array])
    end
    k -= 1
  end
  accumulator
end

.prototype_reverse(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 131

def prototype_reverse(builtin, this)
  array = to_object(this, builtin)
  items = array.get_items
  items.reverse!
  len = to_uint32(array.get('length'))
  has_props = len.times.map { |i| array.has_property(i.to_s) }
  has_props.reverse!
  items.each_index do |index|
    if has_props[index]
      array.put(index.to_s, items[index], true)
    else
      array.delete(index.to_s)
    end
  end
  array
end

.prototype_shift(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 148

def prototype_shift(builtin, this)
  array, len = _to_array(this, builtin)
  if len == 0
    array.put('length', 0.0, true)
    return undefined
  end
  first = array.get('0')
  (1...len).each do |k|
    _move_item(array, k, k - 1)
  end
  array.delete((len-1).to_s, true)
  array.put('length', (len-1).to_f, true)
  first
end

.prototype_slice(builtin, this, i_start, i_end) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 163

def prototype_slice(builtin, this, i_start, i_end)
  array, len = _to_array(this, builtin)
  relativeStart = to_integer(i_start)
  k = relativeStart < 0 ? [0, len + relativeStart].max : [len, relativeStart].min
  relativeEnd = i_end == undefined ? len : to_integer(i_end)
  final = relativeEnd < 0 ? [len + relativeEnd,0].max : [len, relativeEnd].min
  res = []
  (k...final).each do |i|
    if array.has_property(i.to_s)
      res << array.get(i.to_s)
    end
  end
  result = builtin.new_array
  result.set_items(res)
  result
end

.prototype_some(builtin, this, callbackfn, thisArg) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 321

def prototype_some(builtin, this, callbackfn, thisArg)
  array, len = _to_array(this, builtin)
  unless is_callable(callbackfn)
    raise make_error('TypeError', 'callbackfn must be a function')
  end
  len.times do |k|
    if array.has_property(k.to_s)
      if to_boolean(callbackfn.call(thisArg, [array.get(k.to_s), k.to_f, array]))
        return true
      end
    end
  end
  false
end

.prototype_sort(builtin, this, comparefn) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 202

def prototype_sort(builtin, this, comparefn)
  obj, len = _to_array(this, builtin)
  items = len.times.map { |i| obj.has_property(i.to_s) ? obj.get(i.to_s) : nil }
  items.sort! { |a, b| _internal_sort(a, b, comparefn) }
  len.times do |i|
    if items[i].nil?
      obj.delete(i.to_s, true)
    else
      obj.put(i.to_s, items[i], true)
    end
  end
  obj
end

.prototype_splice(builtin, this, start, deleteCount, *args) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 216

def prototype_splice(builtin, this, start, deleteCount, *args)
  obj, len = _to_array(this, builtin)
  relativeStart = to_integer(start)
  actualStart = relativeStart < 0 ? [0, len + relativeStart].max : [len, relativeStart].min
  actualDeleteCount = [[to_integer(deleteCount), 0].max, len - actualStart].min
  
  k = 0
  new_array = builtin.new_array
  while k < actualDeleteCount
    from = (actualStart + k).to_s
    if obj.has_property(from)
      new_array.put(k.to_s, obj.get(from))
    end
    k += 1
  end

  if args.length < actualDeleteCount
    k = actualStart
    while k < len - actualDeleteCount
      _move_item(obj, k + actualDeleteCount, k + args.length)
      k += 1
    end
  elsif args.length > actualDeleteCount
    k = len - actualDeleteCount
    while k > actualStart
      _move_item(obj, k + actualDeleteCount - 1, k + args.length - 1)
      k -= 1
    end
  end
  k = actualStart
  args.each do |item|
    obj.put(k.to_s, item, true)
    k += 1
  end
  obj.put('length', (len - actualDeleteCount + args.length).to_f, true)
  new_array
end

.prototype_toLocaleString(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 39

def prototype_toLocaleString(builtin, this)
  array, len = _to_array(this, builtin)
  return '' if len == 0
  res = []
  len.times do |i|
    item = array.get(i.to_s)
    if item == undefined || item == null
      res << ''
    else
      item_obj = to_object(item, builtin)
      str_func = item_obj.get('toLocaleString')
      unless is_callable(str_func)
        raise make_error('TypeError', "toLocaleString method of item at index #{i} is not callable")
      end
      res << to_string(str_func.call(item_obj, []))
    end
  end
  res.join(',')
end

.prototype_toString(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 30

def prototype_toString(builtin, this)
  array = to_object(this, builtin)
  func = array.get('join')
  unless is_callable(func)
    func = builtin.object_prototype.get('toString')
  end
  func.call(this, [])
end

.prototype_unshift(builtin, this, *args) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_array.rb', line 254

def prototype_unshift(builtin, this, *args)
  array, len = _to_array(this, builtin)
  arg_count = args.length
  len.downto(1) { |k| _move_item(array, k - 1, k + arg_count - 1) }
  args.each_index { |i| array.put(i.to_s, args[i], true) }
  array.put('length', len + arg_count, true)
  (len + arg_count).to_f
end