Changelog #0

Jul 24, 2019

Hello!

This is the first instance of a monthly changelog for rust-analyzer. Notable changes since last month include:

New Features

#1558 initial support for .await syntax.
- #1512 type inference for ?.
- #1472 completion for type aliases.
- #1544, #1550 mutable variables are underlined.
- #1476 add_impl_members adds types.
- #1478, #1499 sumbodules with raw names and #[path] are resolved.
- #1496 correctly add obligations in function methods.
- #1501 initial type inference for for loops.
- #1515 use bounds on generic parameters during type inference.
- #1525, #1572 completions works for fields of enum variants and in patterns.
- #1582 show types of local variables in completion.

Fixes

#1511 make goto definition work with various Vim clients.
#1494 diagnostics are collected for a single file.
#1536 show code lens for fn main.
#1514 fix discovery of lang items.

Internal Improvements

#1575 s the lexer with rustc.
#1545 migrate to the new version of rowan library, improving memory usage of syntax trees for 60%.
#1532 pick up floundering work from chalk.
Many improvements and cleanups by @kjeremy.

The highlight of the month is probably #1575. The end-game for rust-analyzer is to become a different front-end for the code that rustc itself uses. This pull request is the first step on this path: now, rust-analyzer and rustc use the same code for lexing Rust.