3920: Implement expand_task and list_macros in proc_macro_srv r=matklad a=edwin0cheng
This PR finish up the remain `proc_macro_srv` implementation :
1. Added dylib loading code for proc-macro crate dylib. Note that we have to add some special flags for unix loading because of a bug in old version of glibc, see https://github.com/fedochet/rust-proc-macro-panic-inside-panic-expample/issues/1 and https://github.com/rust-lang/rust/issues/60593 for details.
2. Added tests for proc-macro expansion: We use a trick here by adding `serde_derive` to dev-dependencies and calling `cargo-metadata` for searching its dylib path, and expand it in our tests.
[EDIT]
Note that this PR **DO NOT** implement the final glue code with rust-analzyer and proc-macro-srv yet.
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
3939: Fix non canonicallized path from metadata r=matklad a=edwin0cheng
Crate root path obtained from cargo-metadata may contains non-canonicalized path (e.g. `/foo/../libcore/tests/lib.rs`), such that `vfs::load` will find a incorrect root.
This PR try to fix that by canonicalize it before passing to vfs.
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
todo!() "Indicates unfinished code" (https://doc.rust-lang.org/std/macro.todo.html)
Rust documentation provides further clarification:
> The difference between unimplemented! and todo! is that while todo!
> conveys an intent of implementing the functionality later and the
> message is "not yet implemented", unimplemented! makes no such claims.
todo!() seems more appropriate for assists that insert missing impls.
3933: Fix accidently quadratic behavior when processing include! r=matklad a=matklad
This fixes the immediate problem behind #3927. It doesn't yet fix the deeper problem with `to_node` being quadratic (hence the test is ignored), but it is a good start anyway.
bors r+
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
