mirror of
https://github.com/fluencelabs/wasm-bindgen
synced 2025-04-25 22:22:12 +00:00
2d50d5209b
* remove BindgenAttrs from other backend::ast structs This is primarily a tool for use with the macro crate. Most of these attributes were ignored in the actual codegen, but a few were still being used. This is confusing when trying to add other sources for codegen (such as webidl and typescript). * move parsing logic to macro crate This makes the backend crate solely concerned with having an ast for which we can generate code.
35 lines
929 B
Rust
Executable File
35 lines
929 B
Rust
Executable File
#![feature(proc_macro)]
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extern crate proc_macro;
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extern crate proc_macro2;
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extern crate quote;
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extern crate wasm_bindgen_shared as shared;
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#[macro_use]
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extern crate syn;
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extern crate wasm_bindgen_backend as backend;
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use proc_macro::TokenStream;
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use quote::ToTokens;
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mod parser;
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use parser::MacroParse;
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#[proc_macro_attribute]
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pub fn wasm_bindgen(attr: TokenStream, input: TokenStream) -> TokenStream {
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let item = syn::parse::<syn::Item>(input.clone()).expect("expected a valid Rust item");
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let opts =
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syn::parse::<parser::BindgenAttrs>(attr).expect("invalid arguments to #[wasm_bindgen]");
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let mut ret = proc_macro2::TokenStream::new();
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let mut program = backend::ast::Program::default();
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item.macro_parse(&mut program, (Some(opts), &mut ret));
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program.to_tokens(&mut ret);
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if cfg!(feature = "xxx_debug_only_print_generated_code") {
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println!("{}", ret);
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}
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ret.into()
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}
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