free_mutant/lib/mutant/runner.rb
2014-05-11 14:25:11 +00:00

180 lines
2.9 KiB
Ruby

# encoding: utf-8
module Mutant
# Runner baseclass
class Runner
include Adamantium::Flat, AbstractType
REGISTRY = {}
# Register handler
#
# @param [Class] klass
#
# @return [undefined]
#
# @api private
#
def self.register(klass)
REGISTRY[klass] = self
end
private_class_method :register
# Lookup runner
#
# @param [Class] klass
#
# @return [undefined]
#
# @api private
#
def self.lookup(klass)
current = klass
while current
return REGISTRY.fetch(current) if REGISTRY.key?(current)
current = current.superclass
end
raise ArgumentError, "No handler for: #{klass}"
end
private_class_method :lookup
# Run runner for object
#
# @param [Config] config
# @param [Object] object
#
# @return [Runner]
#
# @api private
#
def self.run(config, object)
handler = lookup(object.class)
handler.new(config, object)
end
# Return config
#
# @return [Mutant::Config]
#
# @api private
#
attr_reader :config
# Initialize object
#
# @param [Config] config
#
# @return [undefined]
#
# @api private
#
def initialize(config)
@config = config
@stop = false
@start = Time.now
run
@end = Time.now
end
# Test if runner should stop
#
# @return [true]
# if runner should stop
#
# @return [false]
# otherwise
#
# @api private
#
def stop?
@stop
end
# Return runtime
#
# @return [Float]
#
# @api private
#
def runtime
(@end || Time.now) - @start
end
# Return reporter
#
# @return [Reporter]
#
# @api private
#
def reporter
config.reporter
end
# Test if runner is successful
#
# @return [true]
# if successful
#
# @return [false]
# otherwise
#
# @api private
#
abstract_method :success?
private
# Perform operation
#
# @return [undefined]
#
# @api private
#
abstract_method :run
# Run reporter on object
#
# @param [Object] object
#
# @return [undefined]
#
# @api private
#
def report(object)
reporter.report(object)
end
# Perform dispatch on multiple inputs
#
# @param [Enumerable<Object>] input
#
# @return [Enumerable<Runner>]
#
# @api private
#
def visit_collection(input)
collection = []
input.each do |object|
runner = visit(object)
collection << runner
@stop = runner.stop?
break if @stop
end
collection
end
# Visit object
#
# @param [Object] object
#
# @return [undefined]
#
# @api private
#
def visit(object)
Runner.run(config, object)
end
end # Runner
end # Mutant