Class: Moguro::Handlers::MethodHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/moguro/handlers/method_handler.rb

Overview

Since:

  • 0.0.1

Direct Known Subclasses

SingletonMethodHandler

Instance Method Summary collapse

Constructor Details

#initialize(class_handler, name, arguments_contract: nil, return_value_contract: nil) ⇒ MethodHandler

Returns a new instance of MethodHandler.

Since:

  • 0.0.1



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# File 'lib/moguro/handlers/method_handler.rb', line 6

def initialize(class_handler, name, arguments_contract: nil, return_value_contract: nil)
  @class_handler = class_handler
  @name = name
  @arguments_contract =
    if arguments_contract.nil?
      arguments_contract
    else
      PreconditionContract.new(klass, arguments_contract, reference)
    end
  @return_value_contract =
    if return_value_contract.nil?
      return_value_contract
    else
      PostconditionContract.new(klass, return_value_contract, reference)
    end
end

Instance Method Details

#module ⇒ Object

Since:

  • 0.0.1



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# File 'lib/moguro/handlers/method_handler.rb', line 23

def module
  m = Module.new

  arguments_contract = @arguments_contract
  return_value_contract = @return_value_contract

  arguments_contract_cb = lambda { |klass, args|
    arguments_contract&.verify!(klass, args)
  }

  return_value_contract_cb = lambda { |klass, results|
    return_value_contract&.verify!(klass, results)
  }
  name = @name
  m.module_eval do
    define_method(name) do |*args, &block|
      arguments_contract_cb.call(self, args)
      *results = super(*args, &block)
      return_value_contract_cb.call(self, results)
    end
  end
  m
end

#reference ⇒ Object

Since:

  • 0.0.1



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# File 'lib/moguro/handlers/method_handler.rb', line 47

def reference
  @reference ||= MethodReference.new(
    method
  )
end