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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/proc-macro/auxiliary/hygiene_example_codegen.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/proc-macro/auxiliary/hygiene_example_codegen.rs')
-rw-r--r-- | src/test/ui/proc-macro/auxiliary/hygiene_example_codegen.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/auxiliary/hygiene_example_codegen.rs b/src/test/ui/proc-macro/auxiliary/hygiene_example_codegen.rs new file mode 100644 index 000000000..2bd4d3336 --- /dev/null +++ b/src/test/ui/proc-macro/auxiliary/hygiene_example_codegen.rs @@ -0,0 +1,27 @@ +// force-host +// no-prefer-dynamic + +#![feature(proc_macro_quote)] +#![crate_type = "proc-macro"] + +extern crate proc_macro as proc_macro_renamed; // This does not break `quote!` + +use proc_macro_renamed::{TokenStream, quote}; + +#[proc_macro] +pub fn hello(input: TokenStream) -> TokenStream { + quote!(hello_helper!($input)) + //^ `hello_helper!` always resolves to the following proc macro, + //| no matter where `hello!` is used. +} + +#[proc_macro] +pub fn hello_helper(input: TokenStream) -> TokenStream { + quote! { + extern crate hygiene_example; // This is never a conflict error + let string = format!("hello {}", $input); + //^ `format!` always resolves to the prelude macro, + //| even if a different `format!` is in scope where `hello!` is used. + hygiene_example::print(&string) + } +} |