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Successfully parse language name

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greg 2018-05-02 04:50:26 -07:00
parent e498e19ffc
commit c6f038a307
1 changed files with 29 additions and 1 deletions
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30
schala-codegen/src/lib.rs
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@ -19,8 +19,36 @@ pub fn derive_programming_language_interface(input: TokenStream) -> TokenStream
let name = &ast.ident;
let attrs = &ast.attrs;
let language_name: Option<String> = attrs.iter().map(|attr| attr.interpret_meta()).find(|meta| {
match meta {
&Some(syn::Meta::NameValue(syn::MetaNameValue { ident, .. })) if ident.as_ref() == "LanguageName" => true,
_ => false
}
}).and_then(|meta| {
match meta {
Some(syn::Meta::NameValue(syn::MetaNameValue { lit: syn::Lit::Str(litstr), .. })) => Some(litstr.value()),
_ => None,
}
});
println!("LANG NAME: {:?}", language_name);
/*
println!("ATTRS {:?}", attrs);
//let language_name = attrs.iter().find(
let meta: Option<syn::Meta> = attrs.get(0).unwrap().interpret_meta();
println!("META: {:?}", meta);
match meta {
Some(syn::Meta::NameValue(syn::MetaNameValue { lit, .. })) => {
println!("GOT LIT: {:?}", lit);
match lit {
syn::Lit::Str(litstr) => println!("VAL: {}", litstr.value()),
_ => panic!("OI")
}
}
_ => panic!("YO")
}
*/
let tokens = quote! {