1784: Support textual scoped macros r=matklad a=uHOOCCOOHu
Refactor the old simulation with `global_macro_scope`.
Now it is quite accurate to resolve textual scoped macros.
- Expand textual scoped macros in item and non-item place.
- Support `#[macro_use]` on `mod`.
- Textual scoped macros are collected into `nameres::ModuleScope`, so I think it makes #1727 easier to fix.
- It is implemented in a simple way to `clone()` current scoped macro ids into sub-modules. Though only indices are cloned, it will still increase some resolving time. Well, I've not bench-marked yet.
In my test with vscode extension, it can now successfully expand `dbg!` from `std` without `std::` prefix. "Goto definition" also works. Screenshot here:
<img width="281" alt="Screenshot_20190907_043442" src="https://user-images.githubusercontent.com/14816024/64458794-ddb47900-d128-11e9-95e3-1c8569978825.png">
Co-authored-by: uHOOCCOOHu <hooccooh1896@gmail.com>
1786: Various minor trait improvements r=matklad a=flodiebold
- lower bounds on trait definition, i.e. super traits
- use super traits for associated types
- use traits from where clauses and their super traits for method resolution
- lower fn-like paths (i.e. `Fn(X, Y) -> Z`)
- pass the environment to Chalk in the correct way to make elaboration work, i.e. inferring things like `T: Clone` from `T: Copy`. The clauses need to be wrapped in `FromEnv` clauses for that to work, which I didn't do before.
- add some tests for closure inference already
Co-authored-by: Florian Diebold <flodiebold@gmail.com>
1780: add option to disable notify r=matklad a=matklad
This should help if notify uses 100% of CPU. Put
```
{
"rust-analyzer.useClientWatching": true,
}
```
into `.vscode/settings.json` (or appropriate config of your editor) to use editor's file watching capabilites instead of notify
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
1771: Further tweak for macro_use on extern crate r=matklad a=uHOOCCOOHu
Some more tweaks to #1743 to behave more like `rustc`
1. Hoist macros from `#[macro_use] extern crate`, so that they can be used before `extern crate`.
2. Implicit `#[macro_use]` for `prelude` if exists
Co-authored-by: uHOOCCOOHu <hooccooh1896@gmail.com>
