elua: prepare for compatibility with cffi-lua (use ffi.nullptr)

This is necessary because the LuaJIT FFI implements the null
pointer to nil equality behavior, which is not possible to
do in standard Lua (as equality metamethod needs identical types
to trigger).

So replace it with ffi.nullptr as cffi-lua implements; in luajit
ffi.nullptr will just become nil and it'll work like before.

src/bindings/luajit/eina/accessor.lua

@@ -46,12 +46,12 @@ ffi.metatype("Eina_Accessor", {
         unlock = function(self) return eina.eina_accessor_unlock(self) ~= 0 end,
         clone  = function(self)
             local v = eina.eina_accessor_clone(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
         container_get = function(self)
             local v = eina.eina_accessor_container_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -64,7 +64,7 @@ local dgetmt = debug.getmetatable
 M.Accessor = util.Readonly_Object:clone {
     __ctor = function(self, selfmt, acc)
         -- prevent null stuff
-        if acc == nil then acc = nil end
+        if acc == ffi.nullptr then acc = nil end
         if acc then ffi.gc(acc, acc.free) end
         selfmt.__eq = function(self, other)
             return selfmt.__accessor == dgetmt(other).__accessor

src/bindings/luajit/eina/counter.lua

@@ -51,7 +51,7 @@ M.Counter = ffi.metatype("Eina_Counter", {
 
         dump = function(self)
             local v = eina.eina_counter_dump(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             local r = ffi.string(v)
             C.free(v)
             return r

src/bindings/luajit/eina/file.lua

@@ -236,7 +236,7 @@ M.direct_ls = function(dir) return Direct_Ls_Iterator(dir) end
 
 M.path_sanitize = function(path)
     local v = eina.eina_file_path_sanitize(path)
-    if v == nil then return nil end
+    if v == ffi.nullptr then return nil end
     local r = ffi.string(v)
     C.free(v)
     return r
@@ -358,7 +358,7 @@ M.File = ffi.metatype("Eina_File", {
 
         map_all = function(self, rule, raw)
             local v = ffi.cast("char*", eina.eina_file_map_all(self, rule or 0))
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             if not raw then
                 local r = ffi.string(v)
                 self:map_free(v)
@@ -370,7 +370,7 @@ M.File = ffi.metatype("Eina_File", {
         map_new = function(self, rule, offset, length, raw)
             local v = ffi.cast("char*", eina.eina_file_map_new(self, rule or 0,
                 offset or 0, length))
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             if not raw then
                 local r = ffi.string(v, length)
                 self:map_free(v)

src/bindings/luajit/eina/iterator.lua

@@ -43,7 +43,7 @@ ffi.metatype("Eina_Iterator", {
         unlock = function(self) return eina.eina_iterator_unlock(self) ~= 0 end,
         container_get = function(self)
             local v = eina.eina_iterator_container_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -56,7 +56,7 @@ local dgetmt = debug.getmetatable
 M.Iterator = util.Readonly_Object:clone {
     __ctor = function(self, selfmt, iter)
         -- prevent null stuff
-        if iter == nil then iter = nil end
+        if iter == ffi.nullptr then iter = nil end
         if iter then ffi.gc(iter, iter.free) end
         selfmt.__eq = function(self, other)
             return selfmt.__iterator == dgetmt(other).__iterator

src/bindings/luajit/eina/list.lua

@@ -83,7 +83,9 @@ local dgetmt = debug.getmetatable
 
 local List_Iterator = Iterator:clone {
     __ctor = function(self, selfmt, list)
-        if list == nil then return Iterator.__ctor(self, selfmt, nil) end
+        if not list or list == ffi.nullptr then
+            return Iterator.__ctor(self, selfmt, nil)
+        end
         selfmt.__list = list
         return Iterator.__ctor(self, selfmt,
             eina.eina_list_iterator_new(dgetmt(list).__list))
@@ -98,7 +100,9 @@ local List_Iterator = Iterator:clone {
 
 local List_Reverse_Iterator = Iterator:clone {
     __ctor = function(self, selfmt, list)
-        if list == nil then return Iterator.__ctor(self, selfmt, nil) end
+        if not list or list == ffi.nullptr then
+            return Iterator.__ctor(self, selfmt, nil)
+        end
         selfmt.__list = list
         return Iterator.__ctor(self, selfmt,
             eina.eina_list_iterator_reversed_new(dgetmt(list).__list))
@@ -115,7 +119,9 @@ local Accessor = accessor.Accessor
 
 local List_Accessor = Accessor:clone {
     __ctor = function(self, selfmt, list)
-        if list == nil then return Accessor.__ctor(self, selfmt, nil) end
+        if not list or list == ffi.nullptr then
+            return Accessor.__ctor(self, selfmt, nil)
+        end
         selfmt.__list = list
         return Accessor.__ctor(self, selfmt,
             eina.eina_list_accessor_new(dgetmt(list).__list))
@@ -141,37 +147,37 @@ local List = ffi.metatype("Eina_List", {
         data_get = function(self, ptr)
             if ptr ~= nil then return ptr end
             local v = get_list_t(self).data
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         nth = function(self, n)
             local v = eina.eina_list_nth(self, n - 1)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return self:data_get(v)
         end,
 
         nth_list = function(self, n)
             local v = eina.eina_list_nth_list(self, n - 1)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         last = function(self)
             local v = get_list_t(self).accounting.last
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         next = function(self)
             local v = get_list_t(self).next
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         prev = function(self)
             local v = get_list_t(self).prev
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -183,7 +189,7 @@ local List_Base = util.Readonly_Object:clone {
             list = ffi.gc(list, freefunc)
             selfmt.__free = freefunc
         end
-        if list == nil then return end
+        if not list or list == ffi.nullptr then return end
         selfmt.__eq = function(self, other)
             return selfmt.__list == dgetmt(other).__list
         end
@@ -194,62 +200,62 @@ local List_Base = util.Readonly_Object:clone {
     free = function(self)
         self = dgetmt(self)
         local  ffunc, l = self.__free, self.__list
-        if not ffunc or l == nil then return end
+        if not ffunc or not l or l == ffi.nullptr then return end
         ffunc(ffi.gc(self.__list, nil))
     end,
 
     count = function(self)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return 0 end
+        if not l or l == ffi.nullptr then return 0 end
         return #l
     end,
 
     nth = function(self, n)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return nil end
+        if not l or l == ffi.nullptr then return nil end
         return l:nth()
     end,
 
     nth_list = function(self, n)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return nil end
+        if not l or l == ffi.nullptr then return nil end
         return self.__index(l:nth_list())
     end,
 
     last = function(self, n)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return nil end
+        if not l or l == ffi.nullptr then return nil end
         return self.__index(l:last())
     end,
 
     next = function(self, n)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return nil end
+        if not l or l == ffi.nullptr then return nil end
         return self.__index(l:next())
     end,
 
     prev = function(self, n)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return nil end
+        if not l or l == ffi.nullptr then return nil end
         return self.__index(l:prev())
     end,
 
     data_get = function(self, ptr)
         self = dgetmt(self)
         local l = self.__list
-        if l == nil then return nil end
+        if not l or l == ffi.nullptr then return nil end
         return l:data_get(ptr)
     end,
 
     to_array = function(self)
         local l = dgetmt(self).__list
-        if l == nil then return {}, 0 end
+        if not l or l == ffi.nullptr then return {}, 0 end
         local n = 0
         local r = {}
         while l ~= nil do
@@ -293,7 +299,7 @@ M.Ptr_List = List_Base:clone {
 M.String_List = List_Base:clone {
     data_get = function(self, ptr)
         ptr = List_Base.data_get(self, ptr)
-        if ptr == nil then return nil end
+        if not ptr or ptr == ffi.nullptr then return nil end
         return ffi.string(ptr)
     end
 }

src/bindings/luajit/eina/xattr.lua

@@ -98,7 +98,7 @@ end
 M.get = function(file, attribute)
     local size = ffi.new("size_t[1]")
     local v = eina.eina_xattr_get(file, attribute, size)
-    if v == nil then return nil end
+    if v == ffi.nullptr then return nil end
     local r = ffi.string(v, size[0])
     C.free(v)
     return r
@@ -126,7 +126,7 @@ end
 
 M.string_get = function(file, attribute)
     local v = eina.eina_xattr_string_get(file, attribute)
-    if v == nil then return nil end
+    if v == ffi.nullptr then return nil end
     local r = ffi.string(v)
     C.free(v)
     return r

src/bindings/luajit/eo.lua

@@ -337,7 +337,7 @@ end
 
 local get_obj_mt = function(obj)
     local cl = eo.eo_class_get(obj)
-    if cl == nil then return nil end
+    if cl == ffi.nullptr then return nil end
     return classes[eo_obj_addr_get(cl)]
 end
 
@@ -416,7 +416,7 @@ ffi.metatype("Eo", {
     -- handles property getting with no keys and also properties with keys
     __index = function(self, key)
         local mt = get_obj_mt(self)
-        if mt == nil then return nil end
+        if not mt then return nil end
         local pt = mt.__properties
         local pp = pt[key]
         if not pp then
@@ -444,7 +444,7 @@ ffi.metatype("Eo", {
     -- handles property setting with no keys
     __newindex = function(self, key, val)
         local mt = get_obj_mt(self)
-        if mt == nil then return nil end
+        if not mt then return nil end
         local pt = mt.__properties
         local pp = pt[key]
         if not pp then

src/bindings/luajit/eolian.lua

@@ -556,7 +556,7 @@ local object_idx, wrap_object = gen_wrap {
 
     unit_get = function(self)
         local v = eolian.eolian_object_unit_get(cast_obj(self))
-        if v == nil then
+        if v == ffi.nullptr then
             return nil
         end
         return v
@@ -572,7 +572,7 @@ local object_idx, wrap_object = gen_wrap {
 
     file_get = function(self)
         local v = eolian.eolian_object_file_get(cast_obj(self))
-        if v == nil then
+        if v == ffi.nullptr then
             return nil
         end
         return ffi.string(v)
@@ -580,7 +580,7 @@ local object_idx, wrap_object = gen_wrap {
 
     name_get = function(self)
         local v = eolian.eolian_object_name_get(cast_obj(self))
-        if v == nil then
+        if v == ffi.nullptr then
             return nil
         end
         return ffi.string(v)
@@ -588,7 +588,7 @@ local object_idx, wrap_object = gen_wrap {
 
     c_name_get = function(self)
         local v = eolian.eolian_object_c_name_get(cast_obj(self))
-        if v == nil then
+        if v == ffi.nullptr then
             return nil
         end
         return ffi.string(v)
@@ -596,7 +596,7 @@ local object_idx, wrap_object = gen_wrap {
 
     short_name_get = function(self)
         local v = eolian.eolian_object_short_name_get(cast_obj(self))
-        if v == nil then
+        if v == ffi.nullptr then
             return nil
         end
         return ffi.string(v)
@@ -617,7 +617,7 @@ ffi.metatype("Eolian_Object", { __index = object_idx })
 local unit_idx, wrap_unit = gen_wrap {
     state_get = function(self)
         local v = eolian.eolian_unit_state_get(cast_unit(self))
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
@@ -628,13 +628,13 @@ local unit_idx, wrap_unit = gen_wrap {
 
     file_get = function(self)
         local v = eolian.eolian_unit_file_get(cast_unit(self))
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return ffi.string(v)
     end,
 
     file_path_get = function(self)
         local v = eolian.eolian_unit_file_path_get(cast_unit(self))
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return ffi.string(v)
     end,
 
@@ -644,7 +644,7 @@ local unit_idx, wrap_unit = gen_wrap {
 
     object_by_name_get = function(self, name)
         local v = eolian.eolian_unit_object_by_name_get(cast_unit(self), name)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
@@ -655,7 +655,7 @@ local unit_idx, wrap_unit = gen_wrap {
 
     class_by_name_get = function(self, cname)
         local v = eolian.eolian_unit_class_by_name_get(cast_unit(self), cname)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
@@ -666,13 +666,13 @@ local unit_idx, wrap_unit = gen_wrap {
 
     constant_by_name_get = function(self, name)
         local v = eolian.eolian_unit_constant_by_name_get(cast_unit(self), name)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
     error_by_name_get = function(self, name)
         local v = eolian.eolian_unit_error_by_name_get(cast_unit(self), name)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
@@ -688,19 +688,19 @@ local unit_idx, wrap_unit = gen_wrap {
 
     alias_by_name_get = function(self, name)
         local v = eolian.eolian_unit_alias_by_name_get(cast_unit(self), name)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
     struct_by_name_get = function(self, name)
         local v = eolian.eolian_unit_struct_by_name_get(cast_unit(self), name)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
     enum_by_name_get = function(self, name)
         local v = eolian.eolian_unit_enum_by_name_get(cast_unit(self), name)
-        if v == nil then return nil end
+        if v == ffi.nullptr then return nil end
         return v
     end,
 
@@ -769,7 +769,7 @@ ffi.metatype("Eolian_State", {
 
         file_parse = function(self, fname)
             local v = eolian.eolian_state_file_parse(self, fname)
-            if v == nil then
+            if v == ffi.nullptr then
                 return nil
             end
             return v
@@ -777,7 +777,7 @@ ffi.metatype("Eolian_State", {
 
         file_path_parse = function(self, fpath)
             local v = eolian.eolian_state_file_path_parse(self, fpath)
-            if v == nil then
+            if v == ffi.nullptr then
                 return nil
             end
             return v
@@ -817,7 +817,7 @@ ffi.metatype("Eolian_State", {
 
         unit_by_file_get = function(self, fname)
             local v = eolian.eolian_state_unit_by_file_get(state, fname)
-            if v == nil then
+            if v == ffi.nullptr then
                 return nil
             end
             return v
@@ -835,7 +835,7 @@ ffi.metatype("Eolian_State", {
 
         class_by_file_get = function(self, fname)
             local v = eolian.eolian_state_class_by_file_get(self, fname)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -961,13 +961,13 @@ ffi.metatype("Eolian_Struct_Type_Field", {
     __index = wrap_object {
         documentation_get = function(self)
             local v = eolian.eolian_typedecl_struct_field_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         type_get = function(self)
             local v = eolian.eolian_typedecl_struct_field_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -985,19 +985,19 @@ ffi.metatype("Eolian_Enum_Type_Field", {
     __index = wrap_object {
         c_name_get = function(self)
             local v = eolian.eolian_typedecl_enum_field_c_constant_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
         documentation_get = function(self)
             local v = eolian.eolian_typedecl_enum_field_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         value_get = function(self, force)
             local v = eolian.eolian_typedecl_enum_field_value_get(self, force and 1 or 0)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -1016,7 +1016,7 @@ M.Typedecl = ffi.metatype("Eolian_Typedecl", {
 
         struct_field_get = function(self, name)
             local v = eolian.eolian_typedecl_struct_field_get(self, name)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1027,31 +1027,31 @@ M.Typedecl = ffi.metatype("Eolian_Typedecl", {
 
         enum_field_get = function(self, field)
             local v = eolian.eolian_typedecl_enum_field_get(self, field)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         enum_legacy_prefix_get = function(self)
             local v = eolian.eolian_typedecl_enum_legacy_prefix_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end,
 
         documentation_get = function(self, name)
             local v = eolian.eolian_typedecl_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         base_type_get = function(self)
             local v = eolian.eolian_typedecl_base_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         aliased_base_get = function(self)
             local v = eolian.eolian_typedecl_aliased_byse_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1061,19 +1061,19 @@ M.Typedecl = ffi.metatype("Eolian_Typedecl", {
 
         c_type_get = function(self)
             local v = eolian.eolian_typedecl_c_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
         free_func_get = function(self)
             local v = eolian.eolian_typedecl_free_func_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end,
 
         function_pointer_get = function(self)
             local v = eolian.eolian_typedecl_function_pointer_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -1091,37 +1091,37 @@ M.Type = ffi.metatype("Eolian_Type", {
 
         base_type_get = function(self)
             local v = eolian.eolian_type_base_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         next_type_get = function(self)
             local v = eolian.eolian_type_next_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         typedecl_get = function(self)
             local v = eolian.eolian_type_typedecl_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         aliased_base_get = function(self)
             local v = eolian.eolian_type_aliased_byse_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         class_get = function(self)
             local v = eolian.eolian_type_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         error_get = function(self)
             local v = eolian.eolian_type_error_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1139,7 +1139,7 @@ M.Type = ffi.metatype("Eolian_Type", {
 
         c_type_get = function(self)
             local v = eolian.eolian_type_c_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end
     }
@@ -1166,13 +1166,13 @@ M.Function = ffi.metatype("Eolian_Function", {
 
         full_c_name_get = function(self, ftype)
             local v = eolian.eolian_function_full_c_name_get(self, ftype)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
         implement_get = function(self)
             local v = eolian.eolian_function_implement_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1205,19 +1205,19 @@ M.Function = ffi.metatype("Eolian_Function", {
 
         return_type_get = function(self, ftype)
             local v = eolian.eolian_function_return_type_get(self, ftype)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         return_default_value_get = function(self, ftype)
             local v = eolian.eolian_function_return_default_value_get(self, ftype)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         return_documentation_get = function(self, ftype)
             local v = eolian.eolian_function_return_documentation_get(self, ftype)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1240,7 +1240,7 @@ M.Function = ffi.metatype("Eolian_Function", {
 
         class_get = function(self)
             local v = eolian.eolian_function_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -1261,19 +1261,19 @@ ffi.metatype("Eolian_Function_Parameter", {
 
         type_get = function(self)
             local v = eolian.eolian_parameter_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         default_value_get = function(self)
             local v = eolian.eolian_parameter_default_value_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         documentation_get = function(self)
             local v = eolian.eolian_parameter_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1295,26 +1295,26 @@ ffi.metatype("Eolian_Implement", {
     __index = wrap_object {
         class_get = function(self)
             local v = eolian.eolian_implement_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         implementing_class_get = function(self)
             local v = eolian.eolian_implement_implementing_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         function_get = function(self)
             local tp = ffi.new("Eolian_Function_Type[1]")
             local v = eolian.eolian_implement_function_get(self, tp)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v, tp[0]
         end,
 
         documentation_get = function(self, ftype)
             local v = eolian.eolian_implement_documentation_get(self, ftype)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1344,13 +1344,13 @@ ffi.metatype("Eolian_Constructor", {
     __index = wrap_object {
         class_get = function(self)
             local v = eolian.eolian_constructor_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         function_get = function(self)
             local v = eolian.eolian_constructor_function_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1364,19 +1364,19 @@ ffi.metatype("Eolian_Event", {
     __index = wrap_object {
         type_get = function(self)
             local v = eolian.eolian_event_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         class_get = function(self)
             local v = eolian.eolian_event_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         documentation_get = function(self)
             local v = eolian.eolian_event_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1386,7 +1386,7 @@ ffi.metatype("Eolian_Event", {
 
         c_macro_get = function(self)
             local v = eolian.eolian_event_c_macro_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
@@ -1404,13 +1404,13 @@ ffi.metatype("Eolian_Part", {
     __index = wrap_object {
         class_get = function(self)
             local v = eolian.eolian_part_class_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         documentation_get = function(self)
             local v = eolian.eolian_part_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end
     }
@@ -1432,13 +1432,13 @@ M.Class = ffi.metatype("Eolian_Class", {
 
         documentation_get = function(self)
             local v = eolian.eolian_class_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         c_prefix_get = function(self)
             local v = eolian.eolian_class_c_prefix_get(self)
-            if v == nil then
+            if v == ffi.nullptr then
                 local buf = self:namespaces_get()
                 buf[#buf + 1] = self:short_name_get()
                 return table.concat(buf, "_"):lower()
@@ -1448,7 +1448,7 @@ M.Class = ffi.metatype("Eolian_Class", {
 
         event_c_prefix_get = function(self)
             local v = eolian.eolian_class_event_c_prefix_get(self)
-            if v == nil then
+            if v == ffi.nullptr then
                 return self:c_prefix_get()
             end
             return ffi.string(v)
@@ -1456,13 +1456,13 @@ M.Class = ffi.metatype("Eolian_Class", {
 
         data_type_get = function(self)
             local v = eolian.eolian_class_data_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end,
 
         parent_get = function(self)
             local v = eolian.eolian_class_parent_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1484,7 +1484,7 @@ M.Class = ffi.metatype("Eolian_Class", {
         function_by_name_get = function(self, fname, ftype)
             local v = eolian.eolian_class_function_by_name_get(self, fname,
                 ftype)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1505,7 +1505,7 @@ M.Class = ffi.metatype("Eolian_Class", {
 
         event_by_name_get = function(self, name)
             local v = eolian.eolian_class_event_by_name_get(self, name)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1524,19 +1524,19 @@ M.Class = ffi.metatype("Eolian_Class", {
 
         c_get_function_name_get = function(self)
             local v = eolian.eolian_class_c_get_function_name_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
         c_macro_get = function(self)
             local v = eolian.eolian_class_c_macro_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
         c_data_type_get = function(self)
             local v = eolian.eolian_class_c_data_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end
     }
@@ -1611,7 +1611,7 @@ M.Value = ffi.metatype("Eolian_Value", {
 
         to_literal = function(self)
             local v = eolian.eolian_expression_value_to_literal(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end
     }
@@ -1658,13 +1658,13 @@ M.Expression = ffi.metatype("Eolian_Expression", {
         eval = function(self, mask)
             mask = mask or emask.ALL
             local v = eolian.eolian_expression_eval(self, mask)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.cast("Eolian_Value*", v)
         end,
 
         serialize = function(self)
             local v = eolian.eolian_expression_serialize(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi_stringshare(v)
         end,
 
@@ -1678,13 +1678,13 @@ M.Expression = ffi.metatype("Eolian_Expression", {
 
         binary_lhs_get = function(self)
             local v = eolian.eolian_expression_binary_lhs_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         binary_rhs_get = function(self)
             local v = eolian.eolian_expression_binary_rhs_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1694,13 +1694,13 @@ M.Expression = ffi.metatype("Eolian_Expression", {
 
         unary_expression_get = function(self)
             local v = eolian.eolian_expression_unary_expression_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         value_get = function(self)
             local v = eolian.eolian_expression_value_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.cast("Eolian_Value*", v)
         end
     }
@@ -1710,19 +1710,19 @@ M.Constant = ffi.metatype("Eolian_Constant", {
     __index = wrap_object {
         documentation_get = function(self)
             local v = eolian.eolian_constant_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         type_get = function(self)
             local v = eolian.eolian_constant_type_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         value_get = function(self)
             local v = eolian.eolian_constant_value_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
@@ -1736,13 +1736,13 @@ M.Error = ffi.metatype("Eolian_Error", {
     __index = wrap_object {
         documentation_get = function(self)
             local v = eolian.eolian_error_documentation_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return v
         end,
 
         message_get = function(self)
             local v = eolian.eolian_error_message_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end,
 
@@ -1756,19 +1756,19 @@ M.Documentation = ffi.metatype("Eolian_Documentation", {
     __index = wrap_object {
         summary_get = function(self)
             local v = eolian.eolian_documentation_summary_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end,
 
         description_get = function(self)
             local v = eolian.eolian_documentation_description_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end,
 
         since_get = function(self)
             local v = eolian.eolian_documentation_since_get(self)
-            if v == nil then return nil end
+            if v == ffi.nullptr then return nil end
             return ffi.string(v)
         end
     }
@@ -1807,7 +1807,7 @@ end
 
 M.documentation_tokenize = function(doc, ret)
     local ret = eolian.eolian_documentation_tokenize(doc, ret)
-    if ret == nil then
+    if ret == ffi.nullptr then
         return nil
     end
     return ffi.string(ret)
@@ -1827,7 +1827,7 @@ M.Eolian_Doc_Token = ffi.metatype("Eolian_Doc_Token", {
 
         text_get = function(self)
             local str = eolian.eolian_doc_token_text_get(self)
-            if str == nil then
+            if str == ffi.nullptr then
                 return nil
             end
             local ret = ffi.string(str)