Class: Philosophal::Property

Inherits:
Object
  • Object
show all
Defined in:
lib/philosophal/property.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name:, type:, default:, transform:, immutable:, description:) ⇒ Property

Returns a new instance of Property.



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# File 'lib/philosophal/property.rb', line 5

def initialize(name:, type:, default:, transform:, immutable:, description:)
  @name = name
  @type = type
  @default = default
  @transform = transform
  @immutable = immutable
  @description = description
end

Instance Attribute Details

#default ⇒ Object (readonly)

Returns the value of attribute default.



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# File 'lib/philosophal/property.rb', line 14

def default
  @default
end

#description ⇒ Object (readonly)

Returns the value of attribute description.



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# File 'lib/philosophal/property.rb', line 14

def description
  @description
end

#immutable ⇒ Object (readonly)

Returns the value of attribute immutable.



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# File 'lib/philosophal/property.rb', line 14

def immutable
  @immutable
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/philosophal/property.rb', line 14

def name
  @name
end

#transform ⇒ Object (readonly)

Returns the value of attribute transform.



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# File 'lib/philosophal/property.rb', line 14

def transform
  @transform
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/philosophal/property.rb', line 14

def type
  @type
end

Instance Method Details

#check_conversion(value) ⇒ Object 



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# File 'lib/philosophal/property.rb', line 31

def check_conversion(value)
  Philosophal.convert(self, value)
end

#default? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/philosophal/property.rb', line 16

def default?
  @default != nil
end

#default_value ⇒ Object 



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# File 'lib/philosophal/property.rb', line 20

def default_value
  case @default
  when Proc then @default.call
  else @default
  end
end

#generate_boolean_method(buffer = +'')) ⇒ Object 



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# File 'lib/philosophal/property.rb', line 70

def generate_boolean_method(buffer = +'')
  buffer <<
    ' def ' <<
    @name.name <<
    "?\n  " \
    '!!@' << @name.name <<
    "\nend\n"
end

#generate_description_method(buffer = +'')) ⇒ Object 



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# File 'lib/philosophal/property.rb', line 79

def generate_description_method(buffer = +'')
  buffer <<
    ' def ' <<
    @name.name <<
    "_description\n  " \
    '%(' << @description << ')' \
    "\nend\n"
end

#generate_immutable_writer_method(buffer = +'')) ⇒ Object 



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# File 'lib/philosophal/property.rb', line 46

def generate_immutable_writer_method(buffer = +'')
  buffer <<
    ' def ' << @name.name << "=(value)\n  " \
                             'raise FrozenError, "can\'t modify frozen variable @' <<
    @name.name << '" if defined?(@' << @name.name << ")\n" \
                                                     '@' << @name.name << ' = self.class.philosophal_properties[:' <<
    @name.name <<
    "].check_conversion(value).freeze\n" \
    "rescue Philosophal::TypeError => error\n" \
    "error.set_backtrace(caller(1))\n  raise\n" \
    "end\n"
end

#generate_reader_method(buffer = +'')) ⇒ Object 



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# File 'lib/philosophal/property.rb', line 59

def generate_reader_method(buffer = +'')
  buffer <<
    ' def ' <<
    @name.name <<
    "\n  " \
    '@' << @name.name << ' || self.class.philosophal_properties[:' <<
    @name.name <<
    "].default_value\n" \
    "end\n"
end

#generate_writer_method(buffer = +'')) ⇒ Object 



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# File 'lib/philosophal/property.rb', line 35

def generate_writer_method(buffer = +'')
  buffer <<
    ' def ' << @name.name << "=(value)\n  " \
                             '@' << @name.name << ' = self.class.philosophal_properties[:' <<
    @name.name <<
    "].check_conversion(value)\n" \
    "rescue Philosophal::TypeError => error\n" \
    "error.set_backtrace(caller(1))\n  raise\n" \
    "end\n"
end

#transform? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/philosophal/property.rb', line 27

def transform?
  @transform != nil
end