Module: RubyRunJs::JsStringMethods

Extended by:
Helper
Defined in:
lib/ruby_run_js/object_methods/js_string.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

._replace_template(matched_string, offset_start, offset_end, captures, replace_value, whole_string) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 140

def _replace_template(matched_string, offset_start, offset_end, captures, replace_value, whole_string)
  result = ''
  i = 0
  while i < replace_value.length - 1
    if replace_value[i] == '$'
      if replace_value[i + 1] == '$'
        result += '$'
        i += 2
        next
      elsif replace_value[i + 1] == '&'
        result += matched_string
        i += 2
        next
      elsif replace_value[i + 1] == '`'
        result += whole_string[0, offset_start]
        i += 2
        next
      elsif replace_value[i + 1] == '\''
        result += whole_string[offset_end, whole_string.length]
        i += 2
        next
      elsif replace_value[i + 1] =~ /[0-9]/
        digit = replace_value[i + 1]
        if i + 2 < replace_value.length && replace_value[i + 2] =~ /[0-9]/
          digit += replace_value[i + 2]
        end
        num = digit.to_i
        if num == 0 || num >= captures.length
          result += '$' + digit
        else
          result += captures[num - 1]
        end
        i += 1 + digit.length
        next
      end
    end
    result += replace_value[i]
    i += 1
  end
  if i < replace_value.length
    result += replace_value[-1]
  end
  result
end

._split_match(str, q, regexp) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 270

def _split_match(str, q, regexp)
  if regexp.js_class == 'RegExp'
    match_data = regexp.pattern.match(str, q)
    if match_data
      return [match_data.end(0), match_data.captures]
    else
      return nil
    end
  end
  # regexp must be string
  r = regexp.length
  s = str.length
  if str[q..].start_with?(regexp)
    return [q + r, []]
  end
  return nil
end

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



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

def constructor(builtin, this, *args)
  args.length > 0 ? to_string(args[0]) : ''
end

.constructor_fromCharCode(builtin, this, *chars) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 17

def constructor_fromCharCode(builtin, this, *chars)
  chars.map { |char| to_uint16(char).chr(Encoding::UTF_8) }.join('')
end

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



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

def constructor_new(builtin, this, *args)
  builtin.new_string(args.length > 0 ? to_string(args[0]) : '')
end

.prototype_charAt(builtin, this, pos) ⇒ Object 



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

def prototype_charAt(builtin, this, pos)
  check_object(this)
  str = to_string(this)
  pos = to_integer(pos)
  size = str.length
  if pos < 0 || pos >= size
    return ''
  end
  str[pos]
end

.prototype_charCodeAt(builtin, this, pos) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 50

def prototype_charCodeAt(builtin, this, pos)
  check_object(this)
  str = to_string(this)
  pos = to_integer(pos)
  size = str.length
  if pos < 0 || pos >= size
    return Float::NAN
  end
  str[pos].ord.to_f
end

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



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 61

def prototype_concat(builtin, this, *strings)
  check_object(this)
  to_string(this) + strings.map { |s| to_string(s) }.join('')
end

.prototype_indexOf(builtin, this, searchString, position) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 66

def prototype_indexOf(builtin, this, searchString, position)
  check_object(this)
  str = to_string(this)
  search_str = to_string(searchString)
  pos = position == undefined ? 0 : to_integer(position)
  len = str.length
  start = [[0, pos].max, len].min
  r = str.index(search_str, start)
  r.nil? ? -1.0 : r.to_f
end

.prototype_lastIndexOf(builtin, this, searchString, position) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 77

def prototype_lastIndexOf(builtin, this, searchString, position)
  check_object(this)
  str = to_string(this)
  search_str = to_string(searchString)
  len = str.length
  pos = position == undefined ? Float::NAN : to_number(position)
  pos = pos.nan? ? len : to_integer(pos)
  start = [[0, pos].max, len].min
  r = str.rindex(search_str, start)
  r.nil? ? -1.0 : r.to_f
end

.prototype_localeCompare(builtin, this, that) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 89

def prototype_localeCompare(builtin, this, that)
  check_object(this)
  str = to_string(this)
  that = to_string(that)
  if str > that
    return 1.0
  elsif str < that
    return -1.0
  else
    return 0.0
  end
end

.prototype_match(builtin, this, regexp) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 102

def prototype_match(builtin, this, regexp)
  check_object(this)
  str = to_string(this)
  rx = regexp.js_class == 'RegExp' ? regexp : builtin.new_regexp(str, '')
  exec_func = rx.prototype.get('exec')
  unless rx.get('global')
    return exec_func.call(rx, [str])
  end
  rx.put('lastIndex', 0.0)
  results = []
  previous_last_index = 0
  n = 0
  last_match = true
  while last_match
    result = exec_func.call(rx, [str])
    if result == null 
      last_match = false
    else
      this_index = rx.get('lastIndex')
      if this_index == previous_last_index
        rx.put('lastIndex', this_index + 1)
        previous_last_index = this_index + 1
      else
        previous_last_index = this_index
      end
      match_str = result.get('0')
      results << match_str
    end
  end

  if results.empty?
    return null
  end
  js_result = builtin.new_array()
  js_result.set_items(results)
  js_result
end

.prototype_replace(builtin, this, searchValue, replaceValue) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 185

def prototype_replace(builtin, this, searchValue, replaceValue)
  check_object(this)
  str = to_string(this)

  result = ''

  is_func = true
  unless is_callable(replaceValue)
    replaceValue = to_string(replaceValue)
    is_func = false
  end

  if searchValue.js_class == 'RegExp'
    if searchValue.get('global')
      last_index = 0
      match_data = searchValue.pattern.match(str, 0)
      while match_data
        result += str[last_index, match_data.begin(0) - last_index]

        if is_func
          args = [match_data[0]]
          args += match_data.captures
          args << match_data.begin(0)
          args << str
          result += to_string(replaceValue.call(this, args))
        else
          result += _replace_template(match_data[0], match_data.begin(0), match_data.end(0), match_data.captures, replaceValue, str)
        end

        last_index = match_data.end(0)
        match_data = searchValue.pattern.match(str, last_index)
      end
      result += str[last_index..]
      return result
    else
      match_data = searchValue.pattern.match(str)
      if match_data.nil?
        return str
      end
      captures = match_data.captures
      offset_start = match_data.begin(0)
      offset_end = match_data.end(0)
      matched_string = match_data[0]
    end
  else
    matched_string = to_string(searchValue)
    index = str.index(matched_string)
    if index.nil?
      return str
    end
    offset_start = index
    offset_end = index + matched_string.length
    captures = []
  end
  result = str[0,offset_start]
  if is_func
    args = [matched_string] + captures + [offset_start, str]
    result += to_string(replaceValue.call(this, args))
  else
    result += _replace_template(matched_string, offset_start, offset_end, captures, replaceValue, str)
  end
  result += str[offset_end..]
  result
end

.prototype_search(builtin, this, regexp) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 250

def prototype_search(builtin, this, regexp)
  check_object(this)
  str = to_string(this)
  regexp = regexp.js_class == 'RegExp' ? regexp : builtin.new_regexp(regexp, '')
  match_data = regexp.pattern.match(str)
  if match_data
    return match_data.begin(0).to_f
  end
  return -1.0
end

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



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 261

def prototype_slice(builtin, this, i_start, i_end)
  check_object(this)
  str = to_string(this)
  start = to_integer(i_start)
  length = str.length
  i_end = i_end == undefined ? length : to_integer(i_end)
  str[start...i_end]
end

.prototype_split(builtin, this, separator, limit) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 288

def prototype_split(builtin, this, separator, limit)
  check_object(this)
  str = to_string(this)
  results = []
  lim = limit == undefined ? (2**32 - 1) : to_uint32(limit)
  length = str.length
  sep = separator.js_class == 'RegExp' ? separator : to_string(separator)
  return result if lim == 0
  if separator == undefined
    results << str
  elsif length == 0
    z = _split_match(str, 0, sep)
    if z.nil?
      results << str
    end
    return builtin.new_array_with_items(results)
  end
  i = 0
  q = i
  while q != length
    z = _split_match(str, q, sep)
    if z.nil?
      q += 1
    else
      end_index = z[0]
      captures = z[1]
      if end_index == i
        q += 1
      else
        results << str[i...q]
        if results.length == lim
          return builtin.new_array_with_items(results)
        end
        i = end_index
        captures.each do |cap|
          results << cap
          if results.length == lim
            return builtin.new_array_with_items(results)
          end
        end
        q = i
      end
    end
  end
  results << str[q..]
  builtin.new_array_with_items(results)
end

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



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

def prototype_substring(builtin, this, i_start, i_end)
  check_object(this)
  str = to_string(this)
  length = str.length
  i_start = to_integer(i_start)
  i_end = i_end == undefined ? length : to_integer(i_end)
  f_start = [[i_start, 0].max, length].min
  f_end = [[i_end, 0].max, length].min
  from = [f_start, f_end].min
  to = [f_start, f_end].max
  str[from...to]
end

.prototype_toLocaleLowerCase(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 355

def prototype_toLocaleLowerCase(builtin, this)
  prototype_toLowerCase(builtin, this)
end

.prototype_toLocaleUpperCase(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 365

def prototype_toLocaleUpperCase(builtin, this)
  prototype_toUpperCase(builtin, this)
end

.prototype_toLowerCase(builtin, this) ⇒ Object 



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

def prototype_toLowerCase(builtin, this)
  check_object(this)
  str = to_string(this)
  str.downcase
end

.prototype_toString(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 21

def prototype_toString(builtin, this)
  unless this.js_type == :String || this.js_type == :Object && this.js_class == 'String'
    raise make_error('TypeError', 'String.prototype.toString is not generic')
  end

  return this if this.js_type == :String
  return this.value
end

.prototype_toUpperCase(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 359

def prototype_toUpperCase(builtin, this)
  check_object(this)
  str = to_string(this)
  str.upcase
end

.prototype_trim(builtin, this) ⇒ Object 



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# File 'lib/ruby_run_js/object_methods/js_string.rb', line 369

def prototype_trim(builtin, this)
  check_object(this)
  str = to_string(this)
  str.strip
end

.prototype_valueOf(builtin, this) ⇒ Object 



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

def prototype_valueOf(builtin, this)
  unless this.js_type == :String || this.js_type == :Object && this.js_class == 'String'
    raise make_error('TypeError', 'String.prototype.valueOf is not generic')
  end

  return this if this.js_type == :String
  return this.value
end