Class: Rdbc::Decorator

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

Instance Method Summary collapse

Constructor Details

#initialize(object, contract) ⇒ Decorator

Returns a new instance of Decorator.



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# File 'lib/rdbc/decorator.rb', line 3

def initialize(object, contract)
  @object = object
  @contract = contract
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args) ⇒ Object 



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# File 'lib/rdbc/decorator.rb', line 8

def method_missing(method, *args)
  object_pre = @object.clone
  @contract.send_method_pre(method, @object, *args)
  exception = nil
  begin
    result = @object.send(method, *args)
  rescue => exception
  end
  @contract.send_invariant(@object)
  @contract.send_method_post(method, object_pre, @object, exception, result, *args)
  if exception.nil?
    result
  else
    raise exception
  end
end