correctly transfer the uservalue of a deep userdata

1 files changed, 9 insertions, 1 deletions

diff --git a/deep_test/deeptest.lua b/deep_test/deeptest.lua
index b3e523f..92cd372 100644
--- a/deep_test/deeptest.lua
+++ b/deep_test/deeptest.lua
@@ -23,13 +23,19 @@ end
 local performTest = function( obj_)
         -- setup the userdata with some value and a uservalue
         obj_:set( 666)
-        obj_:setuv( 1,  makeUserValue( obj_))
+        -- lua 5.1->5.2 support a single table uservalue
+        -- lua 5.3 supports an arbitrary type uservalue
+        obj_:setuv( 1, makeUserValue( obj_))
+        -- lua 5.4 supports multiple uservalues of arbitrary types
+        -- obj_:setuv( 2, "ENDUV")
 
         -- read back the contents of the object
         print( "immediate:", obj_, obj_:getuv( 1))
 
         -- send the object in a linda, get it back out, read the contents
         l:set( "key", obj_)
+        -- when obj_ is a deep userdata, out is the same userdata as obj_ (not another one pointing on the same deep memory block) because of an internal cache table [deep*] -> proxy)
+        -- when obj_ is a clonable userdata, we get a different clone everytime we cross a linda or lane barrier
         local out = l:get( "key")
         print( "out of linda:", out, out:getuv( 1))
 
@@ -46,6 +52,8 @@ local performTest = function( obj_)
                 end
         )
         h = g( obj_)
+        -- when obj_ is a deep userdata, from_lane is the same userdata as obj_ (not another one pointing on the same deep memory block) because of an internal cache table [deep*] -> proxy)
+        -- when obj_ is a clonable userdata, we get a different clone everytime we cross a linda or lane barrier
         local from_lane = h[1]
         print( "from lane:", from_lane, from_lane:getuv( 1))
 end