# File lib/brakeman/call_index.rb, line 88
  def index_calls calls
    calls.each do |call|
      @calls_by_method[call[:method]] ||= []
      @calls_by_method[call[:method]] << call

      target = call[:target]

      if not target.is_a? Sexp
        @calls_by_target[target] ||= []
        @calls_by_target[target] << call
      elsif target.node_type == :params or target.node_type == :session
        @calls_by_target[target.node_type] ||= []
        @calls_by_target[target.node_type] << call
      end
    end
  end