Ability to get calling function from Lua

[marrub--]

Lua has the ability to get the calling function using lua_getinfo, which is actually used here but there's no way to get this info from mlua's API. This can be used for a multitude of things including getting the environment of the running function, so it is quite a desirable feature (and unfortunately has blocked me from making a function that I needed.)

[khvzak]

Lua has the ability to get the calling function using lua_getinfo, which is actually used here but there's no way to get this info from mlua's API.

You can use Lua debug.getinfo standard function, or Lua::exec_raw to call any Lua API directly.

This can be used for a multitude of things including getting the environment of the running function, so it is quite a desirable feature (and unfortunately has blocked me from making a function that I needed.)

Could you provide more details please? Environment of the running function is _ENV. C functions don't have environment.

[marrub--]

Lua has the ability to get the calling function using lua_getinfo, which is actually used here but there's no way to get this info from mlua's API.

You can use Lua debug.getinfo standard function, or Lua::exec_raw to call any Lua API directly.

Thanks, I wasn't aware of exec_raw.

This can be used for a multitude of things including getting the environment of the running function, so it is quite a desirable feature (and unfortunately has blocked me from making a function that I needed.)

Could you provide more details please? Environment of the running function is _ENV. C functions don't have environment.

I want to get the environment of the function calling the Rust function from Rust.

getfenv in Lua 5.1 (luau's implementation is a bit easier to link) is implemented using lua_getinfo, and I want to make a function kind of similar to it; to be more specific, I'm making a function that passes the calling environment to the chunk of a newly-loaded script.