Module: MaimaiNet::Page::HelperSupport

Included in:
Base
Defined in:
lib/maimai_net/page-html_helper.rb

Overview

adds capability to inject methods using hidden helper block

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(cls) ⇒ void

This method returns an undefined value.

automatically install mutex upon invoked for an extension



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# File 'lib/maimai_net/page-html_helper.rb', line 118

def self.extended(cls)
  cls.class_exec do
    include ModuleExt::AddInternalMutex
  end
end

Instance Method Details

#helper_method(meth, &block) ⇒ Symbol

defines the method to be injected with hidden helper block. such method have an extended set of capability to use methods provided on HelperBlock class.



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# File 'lib/maimai_net/page-html_helper.rb', line 83

def helper_method(meth, &block)
  lock :helper_method, meth do
    define_method meth do
      HelperBlock.__send__(:new, self).instance_exec(&block)
    end
  end
end

#method_added(meth) ⇒ void

This method returns an undefined value.

install an auto-hook for data method for any Page::Base class.



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# File 'lib/maimai_net/page-html_helper.rb', line 94

def method_added(meth)
  return super unless meth === :data && self <= Page::Base

  lock :helper_method, meth do
    fail NotImplementedError, "no solution found for method definition rebinding. please use helper_method #{meth.inspect} do ... end block instead."

    # rand_name = '_%0*x' % [0.size << 1, rand(1 << (0.size << 3))]
    old_meth = instance_method(meth)
    # obj = allocate
    # old_meth = obj.method(meth)
    # HelperBlock.define_method rand_name, old_meth
    # old_meth = instance_method(rand_name)
    # p old_meth
    # remove_method rand_name

    define_method meth do
      HelperBlock.__send__(:new, self).instance_exec(&old_meth.bind(self))
    end
    super
  end
end