From 47cf523c3abc5af218560f9412f3cf203996817d Mon Sep 17 00:00:00 2001
From: kugwa <kugwa2000@gmail.com>
Date: Fri, 23 Oct 2015 02:35:10 +0800
Subject: More complex format of int and float can be match

---
 lexer.l | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lexer.l b/lexer.l
index 829c158..529ba1a 100644
--- a/lexer.l
+++ b/lexer.l
@@ -48,9 +48,9 @@ ID              {letter}({letter}|{digit}|"_")*
 WS              [ \t]+
 
 /* You need to define the following RE's */
-CONST_INT       {digit}+
-CONST_FLOAT     {digit}+\.{digit}+
-/* -?([0-9]+|[0-9]*\.[0-9]+([eE][-+]?[0-9]+)?) */
+CONST_INT       [+-]?{digit}+
+CONST_FLOAT     [+-]?([0-9]+|[0-9]*\.[0-9]+([eE][-+]?[0-9]+)?)
+                /* {digit}+\.{digit}+ */
 CONST_STRING    \"([^\"\n]|(\\.))*\"
 COMMENT         \/\*([^*]|\n|(\*+([^*/]|\n)))*\*+\/
 
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