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Update syn to 0.15

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New and faster parsers!
This commit is contained in:
Alex Crichton
2018-09-04 11:32:09 -07:00
parent e67397ec27
commit 8f9514d216
10 changed files with 123 additions and 129 deletions
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11
crates/macro-support/src/lib.rs
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@ -20,8 +20,8 @@ mod parser;
/// Takes the parsed input from a `#[wasm_bindgen]` macro and returns the generated bindings
pub fn expand(attr: TokenStream, input: TokenStream) -> Result<TokenStream, Diagnostic> {
let item = syn_parse::<syn::Item>(input, "rust item")?;
let opts = syn_parse(attr, "#[wasm_bindgen] attribute options")?;
let item = syn::parse2::<syn::Item>(input)?;
let opts = syn::parse2(attr)?;
let mut tokens = proc_macro2::TokenStream::new();
let mut program = backend::ast::Program::default();
@ -29,10 +29,3 @@ pub fn expand(attr: TokenStream, input: TokenStream) -> Result<TokenStream, Diag
program.try_to_tokens(&mut tokens)?;
Ok(tokens)
}
fn syn_parse<T: syn::synom::Synom>(tokens: TokenStream, name: &str) -> Result<T, Diagnostic> {
syn::parse2(tokens.clone())
.map_err(|err| {
Diagnostic::span_error(&tokens, format!("error parsing {}: {}", name, err))
})
}