Patch to _lupa.pyx to compare tables by identity of lua table rather than by identity of python wrapper

_lupa.patch

==== //dfp/Main/Common/Code/NonDF/lupa/lupa/_lupa.pyx#1 (text) - //dfp/Main/Common/Code/NonDF/lupa/lupa/_lupa.pyx#2 (text) ==== content
@@ -18,6 +18,7 @@
 
 cdef extern from *:
     ctypedef char* const_char_ptr "const char*"
+ctypedef unsigned long uintptr_t
 
 cdef object exc_info
 from sys import exc_info
@@ -458,6 +459,45 @@
     def __iter__(self):
         return _LuaIter(self, KEYS)
 
+    def __richcmp__(_LuaTable self, other_, int op):
+        if not isinstance(other_, _LuaTable):
+            if op == 2: return False
+            elif op == 3: return True
+            return NotImplemented
+        cdef _LuaTable other = <_LuaTable>other_
+        cdef lua_State* L = self._state
+        cdef uintptr_t selfptr
+        cdef uintptr_t otherptr
+        cdef int ret = 0
+        lock_runtime(self._runtime)
+        try:
+            self.push_lua_object()
+            selfptr = <uintptr_t>lua.lua_topointer(L, -1)
+            lua.lua_pop(L, 1)
+            other.push_lua_object()
+            otherptr = <uintptr_t>lua.lua_topointer(L, -1)
+            lua.lua_pop(L, 1)
+        finally:
+            unlock_runtime(self._runtime)
+        if   op == 2: ret = selfptr == otherptr
+        elif op == 3: ret = selfptr != otherptr
+        elif op == 0: ret = selfptr <  otherptr
+        elif op == 1: ret = selfptr <= otherptr
+        elif op == 4: ret = selfptr >  otherptr
+        elif op == 5: ret = selfptr >= otherptr
+        if ret: return True
+        else:   return False
+
+    def __hash__(self):
+        cdef lua_State* L = self._state
+        lock_runtime(self._runtime)
+        try:
+            self.push_lua_object()
+            return <int>lua.lua_topointer(L, -1)
+        finally:
+            lua.lua_pop(L, 1)
+            unlock_runtime(self._runtime)
+
     def keys(self):
         """Returns an iterator over the keys of a table that this
         object represents.  Same as iter(obj).