Class: Module

Inherits:
Object show all
Defined in:
lib/call-me/named.rb,
lib/call-me/memoize.rb,
lib/call-me/overload.rb,
lib/call-me/pattern-matching.rb

Instance Method Summary collapse

Instance Method Details

#def_signature(*sign) ⇒ Object 



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# File 'lib/call-me/overload.rb', line 47

def def_signature (*sign)
	@__to_overload__ = sign
end

#define_overloadable(name, default = nil, matchers) ⇒ Object 



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# File 'lib/call-me/overload.rb', line 51

def define_overloadable (name, default = nil, matchers)
	define_method name do |*args|
		matchers.each {|signature, body|
			return instance_exec *args, &body if (signature.is_a?(Array) ? signature : [signature]).each_with_index.all? {|klass, index|
				args[index].is_a?(klass)
			}
		}

		return instance_exec *args, &default if default

		raise ArgumentError, "the arguments don't match any signature"
	end
end

#define_pattern_matched(name, default = nil, matchers) ⇒ Object 



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# File 'lib/call-me/pattern-matching.rb', line 63

def define_pattern_matched (name, default = nil, matchers)
	define_method name do |*args|
		matchers.each {|signature, body|
			return instance_exec *args, &body if (if signature.is_a?(Proc)
				signature.call(*args)
			else
				(signature.is_a?(Array) ? signature : [signature]) == args
			end)
		}

		return instance_exec *args, &default if default

		raise ArgumentError, "non-exhaustive patterns"
	end
end

#is_overloaded?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/call-me/overload.rb', line 43

def is_overloaded? (name)
	__overloaded__.has_key?(name)
end