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Add support for lua 5.4 to-be-closed variables

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Automatically call object:release() when an object is used as a to-be-closed variable.

Since both release and __gc already handle multiple calls, this just works.
Theoretically extra actions could be added to some objects, like File calling File:close(), but it already does that in its destructor, so that should be unnecessary.
This commit is contained in:
Bart van Strien
2024-03-30 13:16:21 +01:00
parent 4387935f16
commit 4b6756049b
1 changed files with 4 additions and 0 deletions
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src/common/runtime.cpp
+4
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@@ -547,6 +547,10 @@ int luax_register_type(lua_State *L, love::Type *type, ...)
lua_pushcfunction(L, w__release);
lua_setfield(L, -2, "release");
// Add __close for lua 5.4 (just calls release)
lua_pushcfunction(L, w__release);
lua_setfield(L, -2, "__close");
va_list fs;
va_start(fs, type);
for (const luaL_Reg *f = va_arg(fs, const luaL_Reg *); f; f = va_arg(fs, const luaL_Reg *))