decimal.rb in code-ruby-0.5.0

- old
+ new

@@ -16,56 +16,67 @@
       end
 
       def call(**args)
         operator = args.fetch(:operator, nil)
         arguments = args.fetch(:arguments, [])
+        value = arguments.first&.value
 
         if operator == "%"
-          sig(arguments, ::Code::Object::Number)
-          modulo(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          modulo(value)
         elsif operator == "+"
-          sig(arguments, ::Code::Object)
-          plus(arguments.first.value)
+          if value
+            sig(arguments) { ::Code::Object }
+            plus(value)
+          else
+            sig(arguments)
+            self
+          end
         elsif operator == "-"
-          sig(arguments, ::Code::Object::Number)
-          minus(arguments.first.value)
+          if value
+            sig(arguments) { ::Code::Object::Number }
+            minus(value)
+          else
+            sig(arguments)
+            unary_minus
+          end
         elsif operator == "/"
-          sig(arguments, ::Code::Object::Number)
-          division(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          division(value)
         elsif operator == "*"
-          sig(arguments, ::Code::Object::Number)
-          multiplication(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          multiplication(value)
         elsif operator == "**"
-          sig(arguments, ::Code::Object::Number)
-          power(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          power(value)
         elsif operator == "<"
-          sig(arguments, ::Code::Object::Number)
-          inferior(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          inferior(value)
         elsif operator == "<="
-          sig(arguments, ::Code::Object::Number)
-          inferior_or_equal(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          inferior_or_equal(value)
         elsif operator == ">"
-          sig(arguments, ::Code::Object::Number)
-          superior(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          superior(value)
         elsif operator == ">="
-          sig(arguments, ::Code::Object::Number)
-          superior_or_equal(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          superior_or_equal(value)
         elsif operator == "<<"
-          sig(arguments, ::Code::Object::Number)
-          left_shift(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          left_shift(value)
         elsif operator == ">>"
-          sig(arguments, ::Code::Object::Number)
-          right_shift(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          right_shift(value)
         elsif operator == "&"
-          sig(arguments, ::Code::Object::Number)
-          bitwise_and(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          bitwise_and(value)
         elsif operator == "|"
-          sig(arguments, ::Code::Object::Number)
-          bitwise_or(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          bitwise_or(value)
         elsif operator == "^"
-          sig(arguments, ::Code::Object::Number)
-          bitwise_xor(arguments.first.value)
+          sig(arguments) { ::Code::Object::Number }
+          bitwise_xor(value)
         else
           super
         end
       end
 
@@ -139,9 +150,13 @@
         ::Code::Object::Integer.new(raw.to_i | other.raw.to_i)
       end
 
       def bitwise_xor(other)
         ::Code::Object::Integer.new(raw.to_i ^ other.raw.to_i)
+      end
+
+      def unary_minus
+        ::Code::Object::Decimal.new(-raw)
       end
     end
   end
 end