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The project is in its early stages: contributions are welcome and
would be **very** helpful, but the project is not *yet* optimized for
contribution. Moreover, it is doubly experimental, so there's no
guarantee that any work here would reach production. That said, here
are some areas where contributions would be **especially** welcome:
* Designing internal data structures: RFC only outlines the
constraints, it's an open question how to satisfy them in the
optimal way. See `ARCHITECTURE.md` for current design questions.
* Porting libsyntax parser to rust-analyzer: currently rust-analyzer parses
only a tiny subset of Rust. This should be fixed by porting parsing
functions from libsyntax one by one. Take a look at the
[libsyntax parser](https://github.com/rust-lang/rust/blob/6b99adeb11313197f409b4f7c4083c2ceca8a4fe/src/libsyntax/parse/parser.rs)
for "what to port" and at the
[Kotlin parser](https://github.com/JetBrains/kotlin/blob/4d951de616b20feca92f3e9cc9679b2de9e65195/compiler/frontend/src/org/jetbrains/kotlin/parsing/KotlinParsing.java)
for "how to port".
* Writing validators: by design, rust-analyzer is very lax about the
input. For example, the lexer happily accepts unclosed strings. The
idea is that there should be a higher level visitor, which walks the
syntax tree after parsing and produces all the warnings. Alas,
there's no such visitor yet :( Would you like to write one? :)
* Creating tests: it would be tremendously helpful to read each of
libsyntax and rust-analyzer parser functions and crate a small separate
test cases to cover each and every edge case.
* Building stuff with rust-analyzer: it would be really cool to compile
rust-analyzer to WASM and add *client side* syntax validation to rust
playground!
Do take a look at the issue tracker.
If you don't know where to start, or have *any* questions or suggestions,
don't hesitate to chat at [Gitter](https://gitter.im/libsyntax2/Lobby)!
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