Class: Rack::RPC::Service

Inherits:

Object

• Object
• Rack::RPC::Service

show all

Defined in:

lib/rack/rpc/service.rb

Overview

Class Method Summary (collapse)

• + (Class) [](operator_name)

  Returns the operator class for the given operator name.

• + operator(klass, options = {})

  Defines an operator for this service class.

• + (Hash{Class => Hash}) operators

  Returns the operator definitions for this service class.

Instance Method Summary (collapse)

• - method_missing(method_name, *args, &block) protected
• - (Boolean) respond_to?(method_name)

  true or false.

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# File 'lib/rack/rpc/service.rb', line 58

def method_missing(method_name, *args, &block)
  if (operator = self.class[method_name]).nil?
    super # raises NoMethodError
  else
    operator.new(args).execute
  end
end

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# File 'lib/rack/rpc/service.rb', line 38

def self.[](operator_name)
  operator_name = operator_name.to_sym
  operators.find do |klass, options|
    klass_name = klass.name.split('::').last # TODO: optimize this
    return klass if operator_name.eql?(klass_name.to_sym)
  end
end

class Calculator < Service
  operator Add
  operator Subtract
  operator Multiply
  operator Divide
end

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# File 'lib/rack/rpc/service.rb', line 20

def self.operator(klass, options = {})
  raise TypeError, "expected a Class, but got #{klass.inspect}" unless klass.is_a?(Class)
  operators[klass] ||= options
end

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# File 'lib/rack/rpc/service.rb', line 29

def self.operators
  @operators ||= {}
end

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# File 'lib/rack/rpc/service.rb', line 49

def respond_to?(method_name)
  super || (self.class[method_name] ? true : false)
end