free_mutant/lib/mutant/cli/classifier/method.rb
2013-06-14 21:12:10 +02:00

100 lines
2.1 KiB
Ruby

module Mutant
class CLI
class Classifier
# Explicit method classifier
class Method < self
register
TABLE = {
'.' => Matcher::Methods::Singleton,
'#' => Matcher::Methods::Instance
}.freeze
REGEXP = %r(\A(#{SCOPE_PATTERN})([.#])(#{METHOD_NAME_PATTERN}\z)).freeze
# Positions of captured regexp groups
SCOPE_NAME_POSITION = 1
SCOPE_SYMBOL_POSITION = 2
METHOD_NAME_POSITION = 3
# Return method matcher
#
# @return [Matcher::Method]
#
# @api private
#
def matcher
methods_matcher.matcher.new(scope, method)
end
memoize :matcher
private
# Return method
#
# @return [Method, UnboundMethod]
#
# @api private
#
def method
methods_matcher.methods.detect do |method|
method.name == method_name
end or raise("Cannot find method #{identification}")
end
memoize :method, :freezer => :noop
# Return scope name
#
# @return [String]
#
# @api private
#
def scope_name
match[SCOPE_NAME_POSITION]
end
# Return scope
#
# @return [Class, Method]
#
# @api private
#
def scope
Classifier.constant_lookup(scope_name)
end
# Return method name
#
# @return [String]
#
# @api private
#
def method_name
match[METHOD_NAME_POSITION].to_sym
end
# Return scope symbol
#
# @return [Symbol]
#
# @api private
#
def scope_symbol
match[SCOPE_SYMBOL_POSITION]
end
# Return matcher class
#
# @return [Class:Mutant::Matcher]
#
# @api private
#
def methods_matcher
TABLE.fetch(scope_symbol).new(scope)
end
memoize :methods_matcher
end # Method
end # Classifier
end # CLI
end # Mutant