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Contents
# frozen_string_literal: true
module Mutant
class Mutator
class Node
# Mutator for case nodes
class Case < self
handle(:case)
children :condition
private
# Emit mutations
#
# @return [undefined]
def dispatch
emit_singletons
emit_condition_mutations if condition
emit_when_mutations
emit_else_mutations
end
# Emit when mutations
#
# @return [undefined]
def emit_when_mutations
indices = children.each_index.drop(1).take(children.length - 2)
one = indices.one?
indices.each do |index|
mutate_child(index)
delete_child(index) unless one
end
end
# Emit else mutations
#
# @return [undefined]
def emit_else_mutations
else_branch = children.last
else_index = children.length - 1
return unless else_branch
mutate_child(else_index)
emit_child_update(else_index, nil)
end
end # Case
end # Node
end # Mutator
end # Mutant
Version data entries
17 entries across 17 versions & 1 rubygems