From c0763eac05f6e8adf05a1d94fc80ded1a9e14f2c Mon Sep 17 00:00:00 2001 From: Pierre-Emmanuel Patry Date: Wed, 26 Jul 2023 16:48:37 +0200 Subject: gccrs: proc_macro: Add is_available callback Add a callback from gcc to determine wether the bridge is available or not. gcc/rust/ChangeLog: * expand/rust-proc-macro.cc (available): Add symbol registration. (load_macros_array): Likewise. libgrust/ChangeLog: * libproc_macro/proc_macro.cc (not_available): Add a function to express bridge unavailability. * libproc_macro/proc_macro.h (not_available): Likewise. * libproc_macro/registration.h: Add symbol type. Signed-off-by: Pierre-Emmanuel Patry --- gcc/rust/expand/rust-proc-macro.cc | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'gcc') diff --git a/gcc/rust/expand/rust-proc-macro.cc b/gcc/rust/expand/rust-proc-macro.cc index 7843ead..b6cfe25 100644 --- a/gcc/rust/expand/rust-proc-macro.cc +++ b/gcc/rust/expand/rust-proc-macro.cc @@ -56,6 +56,12 @@ static_assert ( ProcMacro::from_str_function_t>::value, "Registration callback signature not synced, check proc macro internals."); +static bool +available () +{ + return true; +} + template bool register_callback (void *handle, Symbol, std::string symbol_name, @@ -95,6 +101,9 @@ load_macros_array (std::string path) if (!REGISTER_CALLBACK (handle, __gccrs_proc_macro_from_str_fn, tokenstream_from_string)) return nullptr; + if (!REGISTER_CALLBACK (handle, __gccrs_proc_macro_is_available_fn, + available)) + return nullptr; // FIXME: Add CrateStableId handling, right now all versions may be loaded, // even incompatible ones. -- cgit v1.1