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mlua_derive/
lib.rs

1use proc_macro::TokenStream;
2
3mod module;
4
5#[cfg(feature = "macros")]
6use {crate::chunk::Chunk, proc_macro_error2::proc_macro_error};
7
8#[cfg(feature = "macros")]
9macro_rules! try_compile {
10    ($expr:expr) => {
11        match $expr {
12            Ok(val) => val,
13            Err(err) => return err.to_compile_error().into(),
14        }
15    };
16}
17
18#[proc_macro_attribute]
19pub fn lua_module(attr: TokenStream, item: TokenStream) -> TokenStream {
20    module::lua_module(attr, item)
21}
22
23#[cfg(feature = "macros")]
24#[proc_macro]
25#[proc_macro_error]
26pub fn chunk(input: TokenStream) -> TokenStream {
27    Chunk::new(input).expand().into()
28}
29
30#[cfg(feature = "macros")]
31#[proc_macro_derive(FromLua)]
32pub fn from_lua(input: TokenStream) -> TokenStream {
33    from_lua::from_lua(input)
34}
35
36/// Derive macro for implementing `UserData` for a Rust type.
37#[cfg(feature = "macros")]
38#[proc_macro_derive(UserData, attributes(lua))]
39pub fn userdata(item: TokenStream) -> TokenStream {
40    userdata::userdata_type(item)
41}
42
43/// Attribute macro for exposing impl block methods to Lua userdata.
44#[cfg(feature = "macros")]
45#[proc_macro_attribute]
46pub fn userdata_impl(attr: TokenStream, item: TokenStream) -> TokenStream {
47    userdata::userdata_impl::userdata_impl(attr, item)
48}
49
50#[cfg(feature = "macros")]
51mod chunk;
52#[cfg(feature = "macros")]
53mod from_lua;
54#[cfg(feature = "macros")]
55mod userdata;