module Forwardable
Constants
- FORWARDABLE_VERSION
Attributes
debug[RW]
Public Instance Methods
def_instance_delegator(accessor, method, ali = method)
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# File lib/drink-menu/ext/forwardable.rb, line 45 def def_instance_delegator(accessor, method, ali = method) accessor = accessor.id2name if accessor.kind_of?(Integer) method = method.id2name if method.kind_of?(Integer) ali = ali.id2name if ali.kind_of?(Integer) activity = Proc.new do define_method("#{ali}") do |*args, &block| begin instance_variable_get(accessor).__send__(method, *args, &block) rescue Exception $@.delete_if{|s| %r"#{Regexp.quote(__FILE__)}"o =~ s} unless Forwardable::debug Kernel::raise end end end # If it's not a class or module, it's an instance begin module_eval(&activity) rescue instance_eval(&activity) end end
Also aliased as: def_delegator
def_instance_delegators(accessor, *methods)
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Shortcut for defining multiple delegator methods, but with no provision for using a different name. The following two code samples have the same effect:
def_delegators :@records, :size, :<<, :map def_delegator :@records, :size def_delegator :@records, :<< def_delegator :@records, :map
# File lib/drink-menu/ext/forwardable.rb, line 37 def def_instance_delegators(accessor, *methods) methods.delete("__send__") methods.delete("__id__") for method in methods def_instance_delegator(accessor, method) end end
Also aliased as: def_delegators
instance_delegate [method, method, ...] => accessor
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Takes a hash as its argument. The key is a symbol or an array of symbols. These symbols correspond to method names. The value is the accessor to which the methods will be delegated.
# File lib/drink-menu/ext/forwardable.rb, line 17 def instance_delegate(hash) hash.each{ |methods, accessor| methods = [methods] unless methods.respond_to?(:each) methods.each{ |method| def_instance_delegator(accessor, method) } } end
Also aliased as: delegate