improve getfenv and setfenv

1 files changed, 0 insertions, 35 deletions

diff --git a/xmake/core/_xmake_main.lua b/xmake/core/_xmake_main.lua
index 94045a2f5..47197d7bb 100644
--- a/xmake/core/_xmake_main.lua
+++ b/xmake/core/_xmake_main.lua
@@ -36,41 +36,6 @@ xmake._WORKING_DIR      = os.curdir()
 xmake._FEATURES         = _FEATURES
 xmake._LUAJIT           = _LUAJIT
 
--- init setfenv/getfenv for lua
-if not getfenv then
-    function getfenv(fn)
-        local i = 1
-        while true do
-            local name, val = debug.getupvalue(fn, i)
-            if name == "_ENV" then
-                return val
-            elseif not name then
-                break
-            end
-            i = i + 1
-        end
-    end
-end
-if not setfenv then
-    function setfenv(fn, env)
-        local i = 1
-        while true do
-            local name = debug.getupvalue(fn, i)
-            if name == "_ENV" then
-                debug.upvaluejoin(fn, i, (function()
-                    return env
-                end), 1)
-                break
-            elseif not name then
-                break
-            end
-
-            i = i + 1
-        end
-        return fn
-    end
-end
-
 -- load the given lua file
 function _loadfile_impl(filepath, mode, opt)