Module: Resultify::ClassMethods

Defined in:
lib/resultify.rb

Instance Method Summary collapse

Instance Method Details

#method_added(name) ⇒ Object 



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# File 'lib/resultify.rb', line 107

def method_added(name)
  return if defined?(@@overwriting_method) && @@overwriting_method
  if defined?(@@resultify_method_names) && @@resultify_method_names.include?(name)
    self.overwrite_method_for_result(name)
  end
  if defined?(@@optionify_method_names) && @@optionify_method_names.include?(name)
    self.overwrite_method_for_option(name)
  end
end

#optionify(*method_names) ⇒ Object 



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# File 'lib/resultify.rb', line 99

def optionify(*method_names)
  @@optionify_method_names = method_names
  self.instance_methods(false).each do |mname|
    self.overwrite_method_for_option(mname) if @@optionify_method_names.include?(mname)
  end
  @@overwriting_method = false
end

#overwrite_method_for_option(name) ⇒ Object 



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# File 'lib/resultify.rb', line 76

def overwrite_method_for_option(name)
  @@overwriting_method = true
  alias_method "old_#{name}".to_sym, name.to_sym
  define_method name do |*args, &block|
    old_method = self.class.instance_method("old_#{name}")
    ret_val = old_method.bind(self).call(*args, &block)
    if ret_val == nil || ret_val == ""
      return Option.new(ret_val)
    else
      return Option.new(nil)
    end
  end
  @@overwriting_method = false
end

#overwrite_method_for_result(name) ⇒ Object 



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# File 'lib/resultify.rb', line 61

def overwrite_method_for_result(name)
  @@overwriting_method = true
  alias_method "old_#{name}".to_sym, name.to_sym
  define_method name do |*args, &block|
    begin
      old_method = self.class.instance_method("old_#{name}")
      ret_val = old_method.bind(self).call(*args, &block)
      return Result.new(ret_val, nil)
    rescue Exception => e
      return Result.new(nil, e)
    end
  end
  @@overwriting_method = false
end

#resultify(*method_names) ⇒ Object 



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# File 'lib/resultify.rb', line 91

def resultify(*method_names)
  @@resultify_method_names = method_names
  self.instance_methods(false).each do |mname|
    self.overwrite_method_for_result(mname) if @@resultify_method_names.include?(mname)
  end
  @@overwriting_method = false
end