From a6c0459384a0899f5ca9c56e78c21f3f37b3af0a Mon Sep 17 00:00:00 2001
From: zhengshouren <448949750@qq.com>
Date: Fri, 10 May 2019 17:44:21 +0800
Subject: [PATCH] 非法数字判断加强判断

---
 src/utils/MathUtil.lua | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/utils/MathUtil.lua b/src/utils/MathUtil.lua
index 9815a41..cef498c 100644
--- a/src/utils/MathUtil.lua
+++ b/src/utils/MathUtil.lua
@@ -42,12 +42,26 @@ function math.randWeight(dataset, field)
 end
 
 function math.illegalNum(num, min, max)
-	local illegal = true
+	if type(num) ~= "number" then
+		-- 非数字类型
+		return true
+	end
+	if num ~= num then
+		-- 非法数字nan
+		return true
+	end
+	if num ~= math.floor(num) then
+		-- 非整数
+		return true
+	end
+	if math.abs(max - min) > 1000 then
+		-- 防止出现数值过大的情况，在线上环境出现效率问题
+		return true
+	end
 	for i = min, max do
 		if num == i then
-			illegal = false
-			break
+			return false
 		end
 	end
-	return illegal
+	return true
 end
\ No newline at end of file
--
libgit2 0.21.2