Module: Contracts::Core

Defined in:
lib/contracts/core.rb

Class Method Summary collapse

Class Method Details

.common(base) ⇒ Object


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# File 'lib/contracts/core.rb', line 11

def self.common(base)
  base.extend(MethodDecorators)

  base.instance_eval do
    def functype(funcname)
      contracts = Engine.fetch_from(self).decorated_methods_for(:class_methods, funcname)
      if contracts.nil?
        "No contract for #{self}.#{funcname}"
      else
        "#{funcname} :: #{contracts[0]}"
      end
    end
  end

  # NOTE: Workaround for `defined?(super)` bug in ruby 1.9.2
  # source: http://stackoverflow.com/a/11181685
  # bug: https://bugs.ruby-lang.org/issues/6644
  base.class_eval <<-RUBY
    # TODO: deprecate
    # Required when contracts are included in global scope
    def Contract(*args)
      if defined?(super)
        super
      else
        self.class.Contract(*args)
      end
    end
  RUBY

  base.class_eval do
    def functype(funcname)
      contracts = Engine.fetch_from(self.class).decorated_methods_for(:instance_methods, funcname)
      if contracts.nil?
        "No contract for #{self.class}.#{funcname}"
      else
        "#{funcname} :: #{contracts[0]}"
      end
    end
  end
end

.extended(base) ⇒ Object


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# File 'lib/contracts/core.rb', line 7

def self.extended(base)
  common(base)
end

.included(base) ⇒ Object


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# File 'lib/contracts/core.rb', line 3

def self.included(base)
  common(base)
end