Class: Context::ExecutionProxy

Inherits:
Object
  • Object
show all
Defined in:
lib/Context/ExecutionProxy.rb

Overview

A Proxy for carrying on conditional execution.

Instance Method Summary collapse

Constructor Details

#initialize(object, cond) ⇒ ExecutionProxy

Set the true object on which to execute and the condition to execute. NOTE: The condition is a bool. In other words it has already been evaluated before we get to this point.



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# File 'lib/Context/ExecutionProxy.rb', line 8

def initialize(object, cond)
    @object = object
    @cond = cond
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol) ⇒ Object

Conditionally evaluate the symbol. If the condition is true, evaluate the symbol. Otherwise return the true object.



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# File 'lib/Context/ExecutionProxy.rb', line 27

def method_missing(symbol)
    if @cond
        @object.instance_eval(symbol.to_s)
    else
        @object
    end
end

Instance Method Details

#execute_if_you_can(&block) ⇒ Object

Conditionally execute the block. If the condition is true, execute the block. Otherwise return the true object. NOTE: Crazy name is so that you don’t have something with the same name and accidently call it with method_missing.



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# File 'lib/Context/ExecutionProxy.rb', line 17

def execute_if_you_can(&block)
    if @cond
        @object.instance_eval(&block)
    else
        @object
    end
end