optimizations

internal/evaluator/evaluator.go

@@ -133,6 +133,9 @@ func Eval(ctx context.Context, node ast.Node, env *object.Environment) object.Ob
 	case *ast.IntegerLiteral:
 		return object.Integer{Value: node.Value}
 
+	case *ast.FloatLiteral:
+		return object.Float{Value: node.Value}
+
 	case *ast.Boolean:
 		return nativeBoolToBooleanObject(node.Value)
 
@@ -401,6 +404,8 @@ func evalInfixExpression(operator string, left, right object.Object) object.Obje
 		return evalBooleanInfixExpression(operator, left, right)
 	case left.Type() == object.IntegerType && right.Type() == object.IntegerType:
 		return evalIntegerInfixExpression(operator, left, right)
+	case left.Type() == right.Type() && left.Type() == object.FloatType:
+		return evalFloatInfixExpression(operator, left, right)
 	case left.Type() == object.StringType && right.Type() == object.StringType:
 		return evalStringInfixExpression(operator, left, right)
 
@@ -409,6 +414,36 @@ func evalInfixExpression(operator string, left, right object.Object) object.Obje
 	}
 }
 
+func evalFloatInfixExpression(operator string, left, right object.Object) object.Object {
+	leftVal := left.(object.Float).Value
+	rightVal := right.(object.Float).Value
+
+	switch operator {
+	case "+":
+		return object.Float{Value: leftVal + rightVal}
+	case "-":
+		return object.Float{Value: leftVal - rightVal}
+	case "*":
+		return object.Float{Value: leftVal * rightVal}
+	case "/":
+		return object.Float{Value: leftVal / rightVal}
+	case "<":
+		return nativeBoolToBooleanObject(leftVal < rightVal)
+	case "<=":
+		return nativeBoolToBooleanObject(leftVal <= rightVal)
+	case ">":
+		return nativeBoolToBooleanObject(leftVal > rightVal)
+	case ">=":
+		return nativeBoolToBooleanObject(leftVal >= rightVal)
+	case "==":
+		return nativeBoolToBooleanObject(leftVal == rightVal)
+	case "!=":
+		return nativeBoolToBooleanObject(leftVal != rightVal)
+	default:
+		return NULL
+	}
+}
+
 func evalBooleanInfixExpression(operator string, left, right object.Object) object.Object {
 	leftVal := left.(object.Boolean).Value
 	rightVal := right.(object.Boolean).Value