Trait mlua::UserDataMethods

source · [−]
pub trait UserDataMethods<'lua, T: UserData> {
    fn add_method<S, A, R, M>(&mut self, name: &S, method: M)
    where
        S: AsRef<[u8]> + ?Sized,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        M: 'static + MaybeSend + Fn(&'lua Lua, &T, A) -> Result<R>;
    fn add_method_mut<S, A, R, M>(&mut self, name: &S, method: M)
    where
        S: AsRef<[u8]> + ?Sized,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        M: 'static + MaybeSend + FnMut(&'lua Lua, &mut T, A) -> Result<R>;
    fn add_async_method<S, A, R, M, MR>(&mut self, name: &S, method: M)
    where
        T: Clone,
        S: AsRef<[u8]> + ?Sized,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        M: 'static + MaybeSend + Fn(&'lua Lua, T, A) -> MR,
        MR: 'lua + Future<Output = Result<R>>;
    fn add_function<S, A, R, F>(&mut self, name: &S, function: F)
    where
        S: AsRef<[u8]> + ?Sized,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        F: 'static + MaybeSend + Fn(&'lua Lua, A) -> Result<R>;
    fn add_function_mut<S, A, R, F>(&mut self, name: &S, function: F)
    where
        S: AsRef<[u8]> + ?Sized,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        F: 'static + MaybeSend + FnMut(&'lua Lua, A) -> Result<R>;
    fn add_async_function<S, A, R, F, FR>(&mut self, name: &S, function: F)
    where
        S: AsRef<[u8]> + ?Sized,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        F: 'static + MaybeSend + Fn(&'lua Lua, A) -> FR,
        FR: 'lua + Future<Output = Result<R>>;
    fn add_meta_method<S, A, R, M>(&mut self, meta: S, method: M)
    where
        S: Into<MetaMethod>,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        M: 'static + MaybeSend + Fn(&'lua Lua, &T, A) -> Result<R>;
    fn add_meta_method_mut<S, A, R, M>(&mut self, meta: S, method: M)
    where
        S: Into<MetaMethod>,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        M: 'static + MaybeSend + FnMut(&'lua Lua, &mut T, A) -> Result<R>;
    fn add_meta_function<S, A, R, F>(&mut self, meta: S, function: F)
    where
        S: Into<MetaMethod>,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        F: 'static + MaybeSend + Fn(&'lua Lua, A) -> Result<R>;
    fn add_meta_function_mut<S, A, R, F>(&mut self, meta: S, function: F)
    where
        S: Into<MetaMethod>,
        A: FromLuaMulti<'lua>,
        R: ToLuaMulti<'lua>,
        F: 'static + MaybeSend + FnMut(&'lua Lua, A) -> Result<R>;
}
Expand description

Method registry for UserData implementors.

Required Methods

Add a regular method which accepts a &T as the first parameter.

Regular methods are implemented by overriding the __index metamethod and returning the accessed method. This allows them to be used with the expected userdata:method() syntax.

If add_meta_method is used to set the __index metamethod, the __index metamethod will be used as a fall-back if no regular method is found.

Add a regular method which accepts a &mut T as the first parameter.

Refer to add_method for more information about the implementation.

Add an async method which accepts a T as the first parameter and returns Future. The passed T is cloned from the original value.

Refer to add_method for more information about the implementation.

Requires feature = "async"

Add a regular method as a function which accepts generic arguments, the first argument will be a AnyUserData of type T if the method is called with Lua method syntax: my_userdata:my_method(arg1, arg2), or it is passed in as the first argument: my_userdata.my_method(my_userdata, arg1, arg2).

Prefer to use add_method or add_method_mut as they are easier to use.

Add a regular method as a mutable function which accepts generic arguments.

This is a version of add_function that accepts a FnMut argument.

Add a regular method as an async function which accepts generic arguments and returns Future.

This is an async version of add_function.

Requires feature = "async"

Add a metamethod which accepts a &T as the first parameter.

Note

This can cause an error with certain binary metamethods that can trigger if only the right side has a metatable. To prevent this, use add_meta_function.

Add a metamethod as a function which accepts a &mut T as the first parameter.

Note

This can cause an error with certain binary metamethods that can trigger if only the right side has a metatable. To prevent this, use add_meta_function.

Add a metamethod which accepts generic arguments.

Metamethods for binary operators can be triggered if either the left or right argument to the binary operator has a metatable, so the first argument here is not necessarily a userdata of type T.

Add a metamethod as a mutable function which accepts generic arguments.

This is a version of add_meta_function that accepts a FnMut argument.

Implementors