bjoernager/rust
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Better unimplemented stuff handling

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This commit is contained in:
bjorn3 2018-08-08 15:38:03 +02:00
parent 0b88b4ef09
commit 7f2e68e38e
3 changed files with 43 additions and 29 deletions
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20
src/lib.rs
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@ -40,6 +40,14 @@ use syntax::symbol::Symbol;
use cranelift::codegen::settings;
use cranelift_faerie::*;
struct NonFatal(pub String);
macro_rules! unimpl {
($($tt:tt)*) => {
panic!(::NonFatal(format!($($tt)*)));
};
}
mod abi;
mod base;
mod common;
@ -240,7 +248,17 @@ impl CodegenBackend for CraneliftCodegenBackend {
for mono_item in
collector::collect_crate_mono_items(tcx, collector::MonoItemCollectionMode::Eager).0
{
base::trans_mono_item(&mut cx, &mut context, mono_item)
let cx = &mut cx;
let context = &mut context;
let res = ::std::panic::catch_unwind(::std::panic::AssertUnwindSafe(move || {
base::trans_mono_item(cx, context, mono_item);
}));
if let Err(err) = res {
match err.downcast::<NonFatal>() {
Ok(non_fatal) => tcx.sess.err(&non_fatal.0),
Err(err) => ::std::panic::resume_unwind(err),
}
}
}
}