Add ffi crate

crates/luaffi_impl/src/lib.rs

@@ -0,0 +1,21 @@
+use proc_macro::TokenStream as TokenStream1;
+use quote::ToTokens;
+use syn::parse_macro_input;
+
+mod cdef;
+mod metatype;
+mod utils;
+
+#[proc_macro_attribute]
+pub fn cdef(args: TokenStream1, input: TokenStream1) -> TokenStream1 {
+    cdef::transform(parse_macro_input!(input))
+        .unwrap_or_else(|err| err.into_compile_error().into_token_stream())
+        .into()
+}
+
+#[proc_macro_attribute]
+pub fn metatype(args: TokenStream1, input: TokenStream1) -> TokenStream1 {
+    metatype::transform(parse_macro_input!(input))
+        .unwrap_or_else(|err| err.into_compile_error().into_token_stream())
+        .into()
+}