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Move the macro support code into its own crate ()

This commit is contained in:
konstin
2018-07-29 17:59:46 +02:00
committed by Alex Crichton
parent 0f50f39079
commit 0bd21b7bd2
7 changed files with 282 additions and 21 deletions

@ -2,33 +2,22 @@
extern crate proc_macro;
extern crate proc_macro2;
extern crate quote;
extern crate wasm_bindgen_shared as shared;
#[macro_use]
extern crate syn;
extern crate wasm_bindgen_backend as backend;
extern crate wasm_bindgen_macro_support as macro_support;
use macro_support::BindgenAttrs;
use proc_macro::TokenStream;
use quote::ToTokens;
mod parser;
use parser::MacroParse;
#[proc_macro_attribute]
pub fn wasm_bindgen(attr: TokenStream, input: TokenStream) -> TokenStream {
let item = syn::parse::<syn::Item>(input.clone()).expect("expected a valid Rust item");
let opts =
syn::parse::<parser::BindgenAttrs>(attr).expect("invalid arguments to #[wasm_bindgen]");
let opts = syn::parse::<BindgenAttrs>(attr).expect("invalid arguments to #[wasm_bindgen]");
let mut ret = proc_macro2::TokenStream::new();
let mut program = backend::ast::Program::default();
item.macro_parse(&mut program, (Some(opts), &mut ret));
program.to_tokens(&mut ret);
let tokens = macro_support::expand(item, opts);
if cfg!(feature = "xxx_debug_only_print_generated_code") {
println!("{}", ret);
println!("{}", tokens);
}
ret.into()
tokens.into()
}