Module: RubyExt::Callbacks::ClassMethods

Defined in:

lib/ruby_ext/more/callbacks.rb

Instance Method Summary

• #set_callback(name, type, *executor_or_options, &block) ⇒ Object
• #wrap_method_with_callbacks(method, callback) ⇒ Object
• #wrap_with_callback(callback) ⇒ Object

Instance Method Details

#set_callback(name, type, *executor_or_options, &block) ⇒ Object

# File 'lib/ruby_ext/more/callbacks.rb', line 202

def set_callback name, type, *executor_or_options, &block
  name.must.be_a Symbol
  type = type.to_sym

  # Parsing arguments.
  opt = executor_or_options.extract_options!
  "You can't provide both method name and block for filter!" if block and !executor_or_options.empty?
  executor = block || executor_or_options.first

  type.must.be_in [:before, :around, :after]
  executor.must.be_defined

  # Creating callback.
  callback = AbstractCallback.new
  callback = case type
  when :before then BeforeCallback.new
  when :around then AroundCallback.new
  when :after then AfterCallback.new
  end

  callback.executor = executor
  callback.terminator = opt.delete :terminator if type == :before
  callback.conditions = opt

  (self.callbacks[name] ||= []) << callback
end

#wrap_method_with_callbacks(method, callback) ⇒ Object

# File 'lib/ruby_ext/more/callbacks.rb', line 229

def wrap_method_with_callbacks method, callback
  method_without_callback = :"#{method}_without_#{callback}_of_#{self.alias}"
  if method_defined? method_without_callback
    raise "can't wrap method #{method} with #{callback} of #{self.alias} twice!"
  end

  alias_method method_without_callback, method
  define_method method do |*args, &block|
    # We can't use run_callbacks, because in case of the `super`
    # call it will be runned twice.
    run_callbacks callback, method do
      send method_without_callback, *args, &block
    end
  end
end

#wrap_with_callback(callback) ⇒ Object

# File 'lib/ruby_ext/more/callbacks.rb', line 245

def wrap_with_callback callback
  instance_methods(false).each do |method|
    wrap_method_with_callbacks method, callback
  end
end