From 1d7134e7f3e8868087fb3c089cb63407f798af92 Mon Sep 17 00:00:00 2001
From: Danila Fedorin <danila.fedorin@gmail.com>
Date: Fri, 28 Jul 2017 09:52:14 -0700
Subject: [PATCH] Make the decimal matching optional.

---
 src/org/nwapw/abacus/tree/TreeBuilder.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/org/nwapw/abacus/tree/TreeBuilder.java b/src/org/nwapw/abacus/tree/TreeBuilder.java
index 9c57741..3f6b77f 100644
--- a/src/org/nwapw/abacus/tree/TreeBuilder.java
+++ b/src/org/nwapw/abacus/tree/TreeBuilder.java
@@ -37,7 +37,7 @@ public class TreeBuilder {
         lexer = new Lexer<TokenType>(){{
             register(" ", TokenType.WHITESPACE);
             register(",", TokenType.COMMA);
-            register("[0-9]+(\\.[0-9]+)?", TokenType.NUM);
+            register("[0-9]*(\\.[0-9]+)?", TokenType.NUM);
             register("\\(", TokenType.OPEN_PARENTH);
             register("\\)", TokenType.CLOSE_PARENTH);
         }};