init: added basic source file and doc.

.gitignore

@@ -39,3 +39,6 @@ luac.out
 *.x86_64
 *.hex
 
+# dev
+go
+t/servroot

README.md

@@ -1,2 +1,8 @@
 # lua-typeof
 Check the data type for Lua variable
+
+## Install
+
+```shell
+luarocks install typeof
+```

lib/typeof.lua

@@ -0,0 +1,119 @@
+local INFINITE_POS = math.huge
+local INFINITE_NEG = -INFINITE_POS
+local type = type
+local floor = math.floor
+local rawequal = rawequal
+
+local function typeof(cmp, arg)
+    return cmp == type(arg)
+end
+
+local function typeof_nil(...)
+    return typeof('nil', ...)
+end
+
+local function typeof_bool(...)
+    return typeof('boolean', ...)
+end
+
+local function typeof_str(...)
+    return typeof('string', ...)
+end
+
+local function typeof_num(...)
+    return typeof('number', ...)
+end
+
+local function typeof_fun(...)
+    return typeof('function', ...)
+end
+
+local function typeof_table(...)
+    return typeof('table', ...)
+end
+
+local function typeof_thread(...)
+    return typeof('thread', ...)
+end
+
+local function typeof_userdata(...)
+    return typeof('userdata', ...)
+end
+
+local function typeof_finite(arg)
+    return type(arg) == 'number' and (arg < INFINITE_POS and arg > INFINITE_NEG)
+end
+
+local function typeof_unsigned(arg)
+    return type(arg) == 'number' and (arg < INFINITE_POS and arg >= 0)
+end
+
+local function typeof_int(arg)
+    return typeof_finite(arg) and rawequal(floor(arg), arg)
+end
+
+local function typeof_int8(arg)
+    return typeof_int(arg) and arg >= -128 and arg <= 127
+end
+
+local function typeof_int16(arg)
+    return typeof_int(arg) and arg >= -32768 and arg <= 32767
+end
+
+local function typeof_int32(arg)
+    return typeof_int(arg) and arg >= -2147483648 and arg <= 2147483647
+end
+
+local function typeof_uint(arg)
+    return typeof_unsigned(arg) and rawequal(floor(arg), arg)
+end
+
+local function typeof_uint8(arg)
+    return typeof_uint(arg) and arg <= 255
+end
+
+local function typeof_uint16(arg)
+    return typeof_uint(arg) and arg <= 65535
+end
+
+local function typeof_uint32(arg)
+    return typeof_uint(arg) and arg <= 4294967295
+end
+
+local function typeof_nan(arg)
+    return arg ~= arg
+end
+
+local function typeof_non(arg)
+    return arg == nil or arg == false or arg == 0 or arg == '' or arg ~= arg
+end
+
+
+local _M = {
+    version = 0.1,
+    ['nil'] = typeof_nil,
+    ['boolean'] = typeof_bool,
+    ['string'] = typeof_str,
+    ['number'] = typeof_num,
+    ['function'] = typeof_fun,
+    ['table'] = typeof_table,
+    ['thread'] = typeof_thread,
+    ['userdata'] = typeof_userdata,
+    ['finite'] = typeof_finite,
+    ['unsigned'] = typeof_unsigned,
+    ['int'] = typeof_int,
+    ['int8'] = typeof_int8,
+    ['int16'] = typeof_int16,
+    ['int32'] = typeof_int32,
+    ['uint'] = typeof_uint,
+    ['uint8'] = typeof_uint8,
+    ['uint16'] = typeof_uint16,
+    ['uint32'] = typeof_uint32,
+    ['nan'] = typeof_nan,
+    ['non'] = typeof_non,
+    -- alias
+    ['Nil'] = typeof_nil,
+    ['Function'] = typeof_fun
+}
+
+return _M

lua-typeof-0.1-0.rockspec

@@ -0,0 +1,21 @@
+package = "lua-typeof"
+version = "0.1-0"
+source = {
+   url = "git://github.com/iresty/lua-typeof",
+   tag = "v0.1"
+}
+description = {
+   summary = "Nonblocking Lua etcd driver library for OpenResty",
+   homepage = "https://github.com/iresty/lua-typeof",
+   license = "Apache License 2.0",
+   maintainer = "Yuansheng Wang <[email protected]>"
+}
+dependencies = {
+   "lua >= 5.1"
+}
+build = {
+   type = "builtin",
+   modules = {
+      ["typeof"] = "lib/typeof.lua",
+   }
+}