Module: RubyRunJs::Helper

Includes:
ConversionHelper
Included in:
BuiltInContext, JsArrayMethods, JsBaseObject, JsBooleanMethods, JsDateMethods, JsErrorMethods, JsFunctionMethods, JsGlobalMethods, JsJsonMethods, JsMathMethods, JsNumberMethods, JsObjectMethods, JsRegExpMethods, JsStringMethods, OPCODES, OPCODES::OP_CODE, Operation
Defined in:
lib/ruby_run_js/helper.rb

Instance Method Summary collapse

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

Instance Method Details

#check_object(obj) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 50

def check_object(obj)
  if obj.js_type == :Undefined || obj.js_type == :Null
    raise make_error('TypeError', 'undefined or null can\'t be converted to object')
  end
end

#get_member(obj, prop, builtin) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 56

def get_member(obj, prop, builtin)
  type = obj.js_type
  if is_primitive(obj)
    case type
    when :String
      if prop.js_type == :Number && prop.finite?
        index = prop.to_i
        if index == prop && index >= 0 && index < obj.length
          return obj[index]
        end
      end

      s_prop = to_string(prop)
      if s_prop == 'length'
        obj.length.to_f
      elsif s_prop =~ /^\d+$/
        index = s_prop.to_i
        if index >= 0 && index < obj.length
          return obj[index]
        end
      end

      return builtin.string_prototype.get(s_prop)
    when :Number
      return builtin.number_prototype.get(to_string(prop))
    when :Boolean
      return builtin.boolean_prototype.get(to_string(prop))
    when :Null
      raise make_error('TypeError', "Cannot read property '#{prop}' of null")
    when :Undefined
      raise make_error('TypeError', "Cannot read property '#{prop}' of undefined")
    end
  end
  obj.get(to_string(prop))
end

#get_member_dot(obj, prop, builtin) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 92

def get_member_dot(obj, prop, builtin)
  if is_primitive(obj)
    case obj.js_type
    when :String
      if prop == 'length'
        obj.length.to_f
      elsif prop =~ /^\d+$/
        index = prop.to_i
        if index >= 0 && index < obj.length
          return obj[index]
        end
      end
      return builtin.string_prototype.get(prop)
    when :Number
      return builtin.number_prototype.get(to_string(prop))
    when :Boolean
      return builtin.boolean_prototype.get(to_string(prop))
    when :Null
      raise make_error('TypeError', "Cannot read property '#{prop}' of null")
    when :Undefined
      raise make_error('TypeError', "Cannot read property '#{prop}' of undefined")
    end
  end
  obj.get(prop)
end

#is_accessor_descriptor(desc) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 19

def is_accessor_descriptor(desc)
  desc && desc != undefined && (desc.key?('get') || desc.key?('set'))
end

#is_callable(func) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 27

def is_callable(func)
  func.respond_to? :call
end

#is_data_descriptor(desc) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 15

def is_data_descriptor(desc)
  desc && desc != undefined && (desc.key?('value') || desc.key?('writable'))
end

#is_generic_descriptor(desc) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 23

def is_generic_descriptor(desc)
  desc && desc != undefined && !(is_data_descriptor(desc) || is_accessor_descriptor(desc))
end

#is_primitive(value) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 31

def is_primitive(value)
  [:Undefined, :Null, :Boolean, :Number, :String].include?(value.js_type)
end

#make_error(error_type, message = 'no info', throw_value = nil) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 11

def make_error(error_type, message = 'no info', throw_value = nil)
  JsException.new(error_type, message, throw_value)
end

#strict_equality(a, b) ⇒ Object 



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# File 'lib/ruby_run_js/helper.rb', line 35

def strict_equality(a, b)
  type = a.js_type
  if type != b.js_type
    return false
  end
  case type
  when :Undefined, :Null
    return true
  when :Boolean, :String, :Number
    return a == b
  else
    return a.equal?(b)
  end
end