emulate_derive_macro_expansion

runtime_macros

Function emulate_derive_macro_expansion 

Source 
pub fn emulate_derive_macro_expansion<'a, F>(
    file: File,
    macro_paths_and_proc_macro_fns: &[(&'a str, F)],
) -> Result<(), Error>
where
    F: Fn(TokenStream) -> TokenStream,
Expand description

Searches the given Rust source code file for derive macro calls and calls the functions that define how to expand them.

This function behaves just like emulate_functionlike_macro_expansion, but with derive macros like #[derive(Foo)] instead of function-like macros like foo!(). See that function’s documentation for details and an example of use.