free_mutant/lib/mutant/mutator/node/send/with_arguments.rb
Markus Schirp 97a75dd062 Cleanup mutation generation
This is a reaction to the to_source rewrite

* Do not use 1.8 specific nodes anymore
* Do not generate AST nodes that would not be generatable from source
2013-01-09 20:43:06 +01:00

81 lines
1.8 KiB
Ruby

module Mutant
class Mutator
class Node
class Send
# Mutator for send with arguments
class WithArguments < self
handle(Rubinius::AST::SendWithArguments)
private
# Emit mutations
#
# @return [undefined]
#
# @api private
#
def dispatch
super
if binary_operator?
run(BinaryOperatorMethod)
return
end
emit_send_remove_mutation
emit_argument_mutations
end
# Test if message is a binary operator
#
# @return [true]
# if message is a binary operator
#
# @return [false]
# otherwise
#
# @api private
#
def binary_operator?
Mutant::BINARY_METHOD_OPERATORS.include?(node.name)
end
# Emit argument mutations
#
# @api private
#
# @return [undefined]
#
# @api private
#
def emit_argument_mutations
emit_attribute_mutations(:arguments) do |mutation|
if mutation.arguments.array.empty?
mutation = new_send(receiver, node.name)
mutation.privately = node.privately
mutation
else
mutation
end
end
end
# Emit send remove mutation
#
# @return [undefined]
#
# @api private
#
def emit_send_remove_mutation
array = node.arguments.array
return unless array.length == 1
emit(array.first)
end
end
end
end
end
end