From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 4 Sep 2023 10:55:16 +0000 (+0100)
Subject: W
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=0fffdafa9ded6c440c97ac8742a599dbdd848668;p=rust-experiments.git

W
---

diff --git a/macros/macros.rs b/macros/macros.rs
index cb6cd4a..44cfdf6 100644
--- a/macros/macros.rs
+++ b/macros/macros.rs
@@ -1,7 +1,11 @@
 
-
+use proc_macro2::TokenStream as TokenStream2;
 
 #[proc_macro]
-pub fn foo(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
-    input
+pub fn reparse(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    let input: TokenStream2 = input.into();
+    let reparsed: TokenStream2 = syn::parse2(input).unwrap_or_else(|e| {
+        e.into_compile_error()
+    });
+    reparsed.into()
 }
diff --git a/src/main.rs b/src/main.rs
index 4e085e7..48d9fde 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,7 @@
 
+use foo_macros::reparse;
+
 fn main() {
-    let s = stringify!(foo!("y"));
+    let s = reparse!(r#" "hi" "#);
     println!("{s}");
 }