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Add proc-macro-srv integration test that clones literals

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This exercises some of the upcoming proc_macro bridge changes. It
should also pass for all supported ABIs, with the older-style bridge.
This commit is contained in:
Amos Wenger 2022-07-20 16:40:02 +02:00
parent bd4439fafa
commit f5042947ce
2 changed files with 30 additions and 4 deletions
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10
crates/proc-macro-test/imp/src/lib.rs
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@ -2,7 +2,7 @@
#![warn(rust_2018_idioms, unused_lifetimes, semicolon_in_expressions_from_macros)]
use proc_macro::{Group, Ident, Punct, TokenStream, TokenTree};
use proc_macro::{Group, Ident, Literal, Punct, TokenStream, TokenTree};
#[proc_macro]
pub fn fn_like_noop(args: TokenStream) -> TokenStream {
@ -71,6 +71,12 @@ fn clone_tree(t: TokenTree) -> TokenTree {
new.set_span(orig.span());
TokenTree::Punct(new)
}
TokenTree::Literal(_orig) => unimplemented!(),
TokenTree::Literal(orig) => {
// this goes through `literal_from_str` as of 2022-07-18, cf.
// https://github.com/rust-lang/rust/commit/b34c79f8f1ef4d0149ad4bf77e1759c07a9a01a8
let mut new: Literal = orig.to_string().parse().unwrap();
new.set_span(orig.span());
TokenTree::Literal(new)
}
}
}