Module: MonkeySupport::CProxy

Included in:
ActiveSupport::Inflector
Defined in:
lib/monkeysupport/c_proxy.rb

Defined Under Namespace

Modules: Util

Instance Method Summary collapse

Instance Method Details

#monkey_c_proxy(ruby_name, c_name, args) ⇒ Object

Generates a proxy-to-C method.

Parameters:

- ruby_name -- the original name of the function to override
- c_name    -- the name of the C function in MonkeySupport::C to use
- args      -- list of arguments to funtion, by type.

args example: [:string, :fixnum, [:string, ‘-’], [:bool true]]

- takes a string, a fixnum, a string with default value '-', then a boolean
  with default value true.

EXAMPLE:

alias_method :__unproxy_demodulize, :demodulize MS_C = MonkeySupport::C unless defined? MS_C def demodulize(arg0)

begin
  MS_C.activesupport_inflector_demodulize(arg0)
rescue TypeError
  __unproxy_demodulize(arg0)
end

end



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# File 'lib/monkeysupport/c_proxy.rb', line 26

def monkey_c_proxy(ruby_name, c_name, args)
  arglist_with_defaults    = Util::arglist(args, true)
  arglist_without_defaults = Util::arglist(args, false)

  # Note: About MS_C: That little extra lookup to MonkeySupport::C
  # can be a near-15% performance hit on some functions. Brutal.
  function = "    alias_method :__unproxy_\#{ruby_name}, :\#{ruby_name}\n    MS_C = MonkeySupport::C unless defined? MS_C\n    def \#{ruby_name}(\#{arglist_with_defaults})\n      begin\n        MS_C.\#{c_name}(\#{arglist_without_defaults})\n      rescue TypeError\n        __unproxy_\#{ruby_name}(\#{arglist_without_defaults})\n      end\n    end\n  EOS\n\n  class_eval(function)\nend\n"