free_mutant/lib/mutant/mutator/node/literal/range.rb
Markus Schirp 6b2e2a8bb0 Initial round of refactoring
* Remove some RBX only nodes
* Register parser types
* Remove all occurences of ::Rubinius when loading libraries
2013-06-14 21:11:54 +02:00

97 lines
2.1 KiB
Ruby

module Mutant
class Mutator
class Node
class Literal
# Abstract literal range mutator
class Range < self
include AbstractType
private
# Emit mutants
#
# @return [undefined]
#
# @api private
#
def dispatch
emit_nil
emit(inverse)
emit_range
end
# Return inverse node
#
# @return [Parser::AST::Node]
#
# @api private
#
def inverse
node = self.node
new(inverse_class, node.start, node.finish)
end
# Emit range specific mutants
#
# @return [undefined]
#
# @api private
#
def emit_range
emit_finish_mutations
emit_start_mutations
end
# Emit range start mutations
#
# @return [undefined]
#
# @api private
#
def emit_finish_mutations
finish = node.finish
#emit_self(negative_infinity, finish)
emit_self(nan, finish)
end
# Emit start mutations
#
# @return [undefined]
#
# @api private
#
def emit_start_mutations
start = node.start
emit_self(start, infinity)
emit_self(start, nan)
end
# Return inverse AST node class
#
# @return [Class:Parser::AST::Node]
#
# @api private
#
def inverse_class
self.class::INVERSE_CLASS
end
# Mutator for range exclude literals
class Exclude < self
INVERSE_TYPE = :irange
handle(:erange)
end # Exclude
# Mutator for range include literals
class Include < self
INVERSE_TYPE = :erange
handle(:irange)
end # Include
end # Range
end # Literal
end # Node
end # Mutator
end # Mutant