Class: Bound::StaticBoundClass

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

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.define_attributes(*attributes) ⇒ Object 



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# File 'lib/bound.rb', line 154

def self.define_attributes(*attributes)
  if attributes.last.kind_of? Hash
    nested_attributes = attributes.pop
  else
    nested_attributes = {}
  end

  if nested_attributes.keys.any? { |a| !a.kind_of? Symbol }
    message = "Invalid list of attributes: #{nested_attributes.inspect}"
    raise ArgumentError, message
  end

  if attributes.any? { |a| !a.kind_of? Symbol }
    message = "Invalid list of attributes: #{attributes.inspect}"
    raise ArgumentError, message
  end

  nested_attributes.each do |attribute, nested_class|
    define_nested_delegate attribute, nested_class
    define_equality attribute
  end

  attributes.each do |attribute|
    define_delegate attribute
    define_equality attribute
  end
end

.define_delegate(attr, prefix = '') ⇒ Object 



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# File 'lib/bound.rb', line 240

def self.define_delegate(attr, prefix = '')
  code = "    def \#{prefix}\#{attr}\n      if @o && @o.key?(:\#{attr})\n        @o[:\#{attr}]\n      elsif @t\n        if @t.kind_of?(Hash)\n          @t[:\#{attr}]\n        elsif @t.respond_to?(:\#{attr})\n          @t.\#{attr}\n        end\n      end\n    end\n  EOR\n  class_eval code\nend\n"

.define_equality(attr) ⇒ Object 



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# File 'lib/bound.rb', line 224

def self.define_equality(attr)
  @equality ||= []
  @equality << attr
  undef_method :==
  code = "    def ==(other)\n      return false unless other\n      \#{@equality.inspect}.all? do |attr|\n        other.respond_to?(attr) &&\n          other.send(attr) == send(attr)\n      end\n    end\n  EOR\n  class_eval code\nend\n"

.define_initializer(after_init = 'validate!') ⇒ Object 



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# File 'lib/bound.rb', line 143

def self.define_initializer(after_init = 'validate!')
  code = "    def initialize(target = nil, overwrite = nil)\n      @t, @o = target, overwrite\n      %s\n    end\n  EOR\n\n  class_eval code % after_init\nend\n"

.define_initializer_without_validation ⇒ Object 



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# File 'lib/bound.rb', line 139

def self.define_initializer_without_validation
  define_initializer(nil)
end

.define_nested_delegate(attr, nested_class) ⇒ Object 



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# File 'lib/bound.rb', line 257

def self.define_nested_delegate(attr, nested_class)
  define_delegate attr, 'get_'
  code = "    class << self\n      def get_\#{attr}_class\n        @\#{attr}_class\n      end\n      def set_\#{attr}_class(arg)\n        @\#{attr}_class = arg\n      end\n      private :set_\#{attr}_class\n    end\n  EOR\n\n  if nested_class.kind_of? Array\n    nested_class = nested_class.first\n    code += <<-EOR\n      def \#{attr}\n        return @\#{attr} if defined? @\#{attr}\n        return [] unless val = get_\#{attr}\n        @\#{attr} ||= val.map{|t| self.class.get_\#{attr}_class.new t}\n      end\n      private :get_\#{attr}\n    EOR\n  else\n    code += <<-EOR\n      def \#{attr}\n        return @\#{attr} if defined? @\#{attr}\n        return nil unless val = get_\#{attr}\n        @\#{attr} ||= self.class.get_\#{attr}_class.new(val)\n      end\n      private :get_\#{attr}\n    EOR\n  end\n  class_eval code\n  self.send :\"set_\#{attr}_class\", nested_class\nend\n"

.define_validator ⇒ Object 



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# File 'lib/bound.rb', line 182

def self.define_validator
  attributes = symbolize_attributes(@attributes ||= [])
  optional_attributes = symbolize_attributes(@optional_attributes ||= [])
  nested_array_attributes = symbolize_attributes(@nested_array_attributes ||= [])

  undef_method :validate!

  code = "    def validate!\n      v = Bound::BoundValidator.new(self, @t, @o)\n      v.attributes = [\#{attributes}]\n      v.optional_attributes = [\#{optional_attributes}]\n      v.nested_array_attributes = [\#{nested_array_attributes}]\n      v.validate!\n    end\n    private :validate!\n  EOR\n  class_eval code\nend\n"

.optional(*attributes) ⇒ Object 



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# File 'lib/bound.rb', line 299

def self.optional(*attributes)
  set_attributes(:set_optional_attributes, attributes)
end

.required(*attributes) ⇒ Object 



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# File 'lib/bound.rb', line 295

def self.required(*attributes)
  set_attributes(:set_required_attributes, attributes)
end

.set_attributes(type, attributes) ⇒ Object 



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# File 'lib/bound.rb', line 303

def self.set_attributes(type, attributes)
  self.define_attributes(*attributes)

  array_attributes = []
  if attributes.last.kind_of? Hash
    attributes.pop.each do |attr, nested_class|
      array_attributes << attr if nested_class.kind_of? Array
      attributes << attr
    end
  end

  self.send(type, attributes, array_attributes)
  self
end

.set_optional_attributes(attributes, nested_array_attributes) ⇒ Object 



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# File 'lib/bound.rb', line 215

def self.set_optional_attributes(attributes, nested_array_attributes)
  @optional_attributes ||= []
  @optional_attributes.concat attributes
  @optional_attributes.concat nested_array_attributes
  @nested_array_attributes ||= []
  @nested_array_attributes.concat nested_array_attributes
  define_validator
end

.set_required_attributes(attributes, nested_array_attributes) ⇒ Object 



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# File 'lib/bound.rb', line 206

def self.set_required_attributes(attributes, nested_array_attributes)
  @attributes ||= []
  @attributes.concat attributes
  @attributes.concat nested_array_attributes
  @nested_array_attributes ||= []
  @nested_array_attributes.concat nested_array_attributes
  define_validator
end

.symbolize_attributes(attributes) ⇒ Object 



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# File 'lib/bound.rb', line 202

def self.symbolize_attributes(attributes)
  attributes.map { |attr| ":#{attr}" }.join(", ")
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/bound.rb', line 131

def ==(other)
  false unless other
  true
end

#validate! ⇒ Object 



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# File 'lib/bound.rb', line 136

def validate!
end