Macro tlua::error

macro_rules! error {
    ($l:expr, $($args:tt)+) => { ... };
}

Throws the lua error with the given message. The first argument is the lua context in which the error should be thrown. When throwing an error from a rust callback use the lua state which was passed to the callback.

This macro will exit the current function so no code after it will be executed.

Example

let lua = tlua::Lua::new();
lua.set("rust_callback_which_may_throw",
    tlua::Function::new(|arg1: i32, arg2: String, lua: tlua::LuaState| {
        // - `arg1` & `arg2` are passed by caller from lua
        // - `lua` is a special argument inserted by tlua.
        //    Only it should be used with `tlua::error!()`!
        tlua::error!(lua, "invalid arguments: {arg1}, {arg2}");
    }));