49 lines
1 KiB
Ruby
49 lines
1 KiB
Ruby
|
module Mutant
|
||
|
|
class Mutator
|
||
|
|
# Registry for mutators
|
||
|
|
module Registry
|
||
|
|
# Return registry state
|
||
|
|
#
|
||
|
|
# @return [Hash]
|
||
|
|
#
|
||
|
|
# @api private
|
||
|
|
#
|
||
|
|
def self.registry
|
||
|
|
@registry ||= {}
|
||
|
|
end
|
||
|
|
private_class_method :registry
|
||
|
|
|
||
|
|
# Register mutator class for AST node class
|
||
|
|
#
|
||
|
|
# @param [Class] ast_class
|
||
|
|
# @param [Class] mutator_class
|
||
|
|
#
|
||
|
|
# @api private
|
||
|
|
#
|
||
|
|
# @return [self]
|
||
|
|
#
|
||
|
|
def self.register(ast_class,mutator_class)
|
||
|
|
registry[ast_class]=mutator_class
|
||
|
|
self
|
||
|
|
end
|
||
|
|
|
||
|
|
# Lookup mutator class for AST node class
|
||
|
|
#
|
||
|
|
# @param [Class] ast_class
|
||
|
|
#
|
||
|
|
# @return [Class]
|
||
|
|
#
|
||
|
|
# @raise [ArgumentError]
|
||
|
|
# raises argument error when mutator class cannot be found
|
||
|
|
#
|
||
|
|
# @api private
|
||
|
|
#
|
||
|
|
def self.lookup(ast_class)
|
||
|
|
registry.fetch(ast_class) do
|
||
|
|
raise ArgumentError,"No mutator to handle: #{ast_class.inspect}"
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|