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Starting to write custom derive for ProgrammingLanguageInterface

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greg 2018-04-30 00:35:42 -07:00
parent 5d69b530c5
commit 258e813a39
2 changed files with 11 additions and 0 deletions
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2
schala-codegen/Cargo.toml
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@ -4,6 +4,8 @@ version = "0.1.0"
authors = ["greg <greg.shuflin@protonmail.com>"] authors = ["greg <greg.shuflin@protonmail.com>"]
[dependencies] [dependencies]
syn = "0.11.11"
quote = "0.3.15"
[lib] [lib]
proc-macro = true proc-macro = true

9
schala-codegen/src/lib.rs
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@ -1,5 +1,8 @@
#![feature(proc_macro)] #![feature(proc_macro)]
extern crate proc_macro; extern crate proc_macro;
#[macro_use]
extern crate quote;
extern crate syn;
use proc_macro::TokenStream; use proc_macro::TokenStream;
#[proc_macro] #[proc_macro]
@ -7,6 +10,12 @@ pub fn print_a_thing(_input: TokenStream) -> TokenStream {
"println!(\"Invoked from a proc macro\");".parse().unwrap() "println!(\"Invoked from a proc macro\");".parse().unwrap()
} }
#[proc_macro_derive(ProgrammingLanguageInterface)]
pub fn derive_programming_language_interface(input: TokenStream) -> TokenStream {
input
}
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
#[test] #[test]