From 240670ca85f65b1bdb755782c8693c80ad5ec474 Mon Sep 17 00:00:00 2001
From: Valk Richard Li <48872266+ValKmjolnir@users.noreply.github.com>
Date: Tue, 7 Apr 2020 01:49:29 -0700
Subject: [PATCH] update

---
 version2.0/nasal_lexer.h | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/version2.0/nasal_lexer.h b/version2.0/nasal_lexer.h
index 5a90f28..199fc66 100644
--- a/version2.0/nasal_lexer.h
+++ b/version2.0/nasal_lexer.h
@@ -242,18 +242,38 @@ std::string nasal_lexer::identifier_gen(std::vector<char>& res,int& ptr,int& lin
 }
 std::string nasal_lexer::number_gen(std::vector<char>& res,int& ptr,int& line)
 {
+	bool scientific_notation=false;
 	std::string token_str="";
 	while(('0'<=res[ptr] && res[ptr]<='9') ||
 		('a'<=res[ptr] && res[ptr]<='f') ||
 		('A'<=res[ptr] && res[ptr]<='F') ||
 		res[ptr]=='.' || res[ptr]=='x' || res[ptr]=='o' ||
-		res[ptr]=='e' || res[ptr]=='E' || res[ptr]=='-')
+		res[ptr]=='e' || res[ptr]=='E')
 	{
 		token_str+=res[ptr];
+		if(res[ptr]=='e' || res[ptr]=='E')
+		{
+			scientific_notation=true;
+			++ptr;
+			break;
+		}
 		++ptr;
 		if(ptr>=res.size())
 			break;
 	}
+	if(scientific_notation && ptr<res.size())
+	{
+		if(res[ptr]=='-')
+		{
+			token_str+='-';
+			++ptr;
+		}
+		while(ptr<res.size() && '0'<=res[ptr] && res[ptr]<='9')
+		{
+			token_str+=res[ptr];
+			++ptr;
+		}
+	}
 	if(!check_numerable_string(token_str))
 	{
 		++error;