class Crispr::Mutator

It delegates to multiple mutation strategies (Boolean, Numeric, etc.)
Mutator performs simple AST mutations on Ruby source code.

def find_mutations(node) 

def find_mutations(node)
  return [] unless node.is_a?(Parser::AST::Node)
  local_mutations =
    MUTATORS.flat_map { |mutator| mutator.mutations_for(node) }
  child_mutations =
    node.children.flat_map { |child| find_mutations(child) }
  local_mutations + child_mutations
end

def initialize(source_code) 

def initialize(source_code)
  @source_code = source_code
end

def mutations 

def mutations
  ast = Parser::CurrentRuby.parse(@source_code)
  return [] unless ast
  find_mutations(ast)
end