cmod-macros 0.4.6

Build a cross-language module with Rust FFI
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

use proc_macro::TokenStream;
use quote::quote;
use syn::{parse_macro_input, parse_quote, ItemMod};

pub fn cmod(_attr: TokenStream, input: TokenStream) -> TokenStream {
    let mut input = parse_macro_input!(input as ItemMod);
    if let Some((_, ref mut items)) = input.content {
        items.insert(
            0,
            parse_quote!(
                type JResult<T> = std::result::Result<T, JsError>;
            ),
        );
        items.insert(
            0,
            parse_quote!(
                use wasm_bindgen::prelude::*;
            ),
        );
    }
    TokenStream::from(quote!(
        #input
    ))
}