lib/dentaku.rb in dentaku-1.0.0 vs lib/dentaku.rb in dentaku-1.1.0

@@ -1,10 +1,19 @@
+require "bigdecimal"
 require "dentaku/calculator"
 require "dentaku/version"
 
 module Dentaku
   def self.evaluate(expression, data={})
     calculator.evaluate(expression, data)
+  end
+
+  class UnboundVariableError < StandardError
+    attr_reader :unbound_variables
+
+    def initialize(unbound_variables)
+      @unbound_variables = unbound_variables
+    end
   end
 
   private
 
   def self.calculator