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tweak readme
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Aleksey Kladov
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107
README.md
107
README.md
@ -16,54 +16,28 @@ functionality is provided via a language server.
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## Quick Start
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Rust analyzer builds on stable Rust >= 1.29.0.
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```
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# run tests
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$ cargo test
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$ cargo parse < crates/libsyntax2/src/lib.rs
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# show syntax tree of a Rust file
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$ cargo run --package ra_cli parse < crates/ra_syntax/src/lib.rs
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# show symbols of a Rust file
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$ cargo run --package ra_cli symbols < crates/ra_syntax/src/lib.rs
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```
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## Trying It Out
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To try out the language server, see [these
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instructions](./editors/README.md). Please note that the server is not
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ready for general use yet. If you are looking for a Rust IDE that
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works, use [IntelliJ
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Rust](https://github.com/intellij-rust/intellij-rust) or
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[RLS](https://github.com/rust-lang-nursery/rls). That being said, the
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basic stuff works, and rust analyzer is developed in the rust analyzer
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powered editor.
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This installs experimental VS Code plugin
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```
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$ cargo install-code
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```
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It's better to remove existing Rust plugins to avoid interference.
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Warning: plugin is not intended for general use, has a lot of rough
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edges and missing features (notably, no code completion). That said,
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while originally libsyntax2 was developed in IntelliJ, @matklad now
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uses this plugin (and thus, libsytax2) to develop libsyntax2, and it
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doesn't hurt too much :-)
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### Features:
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* syntax highlighting (LSP does not have API for it, so impl is hacky
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and sometimes fall-backs to the horrible built-in highlighting)
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* commands (`ctrl+shift+p` or keybindings)
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- **Show Rust Syntax Tree** (use it to verify that plugin works)
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- **Rust Extend Selection** (works with multiple cursors)
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- **Rust Matching Brace** (knows the difference between `<` and `<`)
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- **Rust Parent Module**
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- **Rust Join Lines** (deals with trailing commas)
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* **Go to symbol in file**
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* **Go to symbol in workspace**
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- `#Foo` searches for `Foo` type in the current workspace
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- `#foo#` searches for `foo` function in the current workspace
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- `#Foo*` searches for `Foo` type among dependencies, excluding `stdlib`
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- Sorry for a weired UI, neither LSP, not VSCode have any sane API for filtering! :)
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* code actions:
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- Flip `,` in comma separated lists
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- Add `#[derive]` to struct/enum
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- Add `impl` block to struct/enum
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- Run tests at caret
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* **Go to definition** ("correct" for `mod foo;` decls, index-based for functions).
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## Current Status and Plans
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@ -104,7 +78,11 @@ existing rustc.
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## Code Walk-Through
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### `crates/libsyntax2`
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### `crates/ra_syntax`
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Rust syntax tree structure and parser. See
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[RFC](https://github.com/rust-lang/rfcs/pull/2256) for some design
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notes.
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- `yellow`, red/green syntax tree, heavily inspired [by this](https://github.com/apple/swift/tree/ab68f0d4cbf99cdfa672f8ffe18e433fddc8b371/lib/Syntax)
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- `grammar`, the actual parser
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@ -117,24 +95,35 @@ existing rustc.
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`Visitor` works, you understand libsyntax2).
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### `crates/libeditor`
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### `crates/ra_editor`
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Most of IDE features leave here, unlike `libanalysis`, `libeditor` is
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single-file and is basically a bunch of pure functions.
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All IDE features which can be implemented if you only have access to a
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single file. `ra_editor` could be used to enhance editing of Rust code
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without the need to fiddle with build-systems, file
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synchronization and such.
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In a sense, `ra_editor` is just a bunch of pure functions which take a
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syntax tree as an input.
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### `crates/salsa`
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An implementation of red-green incremental compilation algorithm from
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rust compiler. It makes all rust-analyzer features on-demand.
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### `crates/libanalysis`
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### `crates/ra_analysis`
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A stateful library for analyzing many Rust files as they change.
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`WorldState` is a mutable entity (clojure's atom) which holds current
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state, incorporates changes and handles out `World`s --- immutable
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consistent snapshots of `WorldState`, which actually power analysis.
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`AnalysisHost` is a mutable entity (clojure's atom) which holds
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current state, incorporates changes and handles out `Analysis` --- an
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immutable consistent snapshot of world state at a point in time, which
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actually powers analysis.
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### `crates/server`
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### `crates/ra_lsp_server`
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An LSP implementation which uses `libanalysis` for managing state and
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`libeditor` for actually doing useful stuff.
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An LSP implementation which uses `ra_analysis` for managing state and
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`ra_editor` for actually doing useful stuff.
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### `crates/cli`
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@ -149,7 +138,7 @@ Code-gen tasks, used to develop libsyntax2:
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- `cargo gen-tests` -- collect inline tests from grammar
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- `cargo install-code` -- build and install VS Code extension and server
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### `code`
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### `editors/code`
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VS Code plugin
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@ -159,10 +148,10 @@ VS Code plugin
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Non-incremental, but seems pretty fast:
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```
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$ cargo build --release --package cli
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$ cargo build --release --package ra_cli
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$ wc -l ~/projects/rust/src/libsyntax/parse/parser.rs
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7546 /home/matklad/projects/rust/src/libsyntax/parse/parser.rs
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$ ./target/release/cli parse < ~/projects/rust/src/libsyntax/parse/parser.rs --no-dump > /dev/null
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$ ./target/release/ra_cli parse < ~/projects/rust/src/libsyntax/parse/parser.rs --no-dump > /dev/null
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parsing: 21.067065ms
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```
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@ -175,7 +164,7 @@ parsing: 21.067065ms
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## License
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libsyntax2 is primarily distributed under the terms of both the MIT license
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and the Apache License (Version 2.0).
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Rust analyzer is primarily distributed under the terms of both the MIT
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license and the Apache License (Version 2.0).
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See LICENSE-APACHE and LICENSE-MIT for details.
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89
editors/README.md
Normal file
89
editors/README.md
Normal file
@ -0,0 +1,89 @@
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To install experimental VS Code plugin:
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```
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$ cargo install-code
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```
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This will run `cargo install --packge ra_lsp_server` to install the
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server binary into `~/.cargo/bin`, and then will build and install
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plugin from `editors/code`. See
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[this](https://github.com/matklad/rust-analyzer/blob/cc76b0d31d8ba013c499dd3a4ca69b37004795e6/crates/tools/src/main.rs#L192)
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for details
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It's better to remove existing Rust plugins to avoid interference.
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### Features:
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* syntax highlighting (LSP does not have API for it, so impl is hacky
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and sometimes fall-backs to the horrible built-in highlighting)
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* **Go to symbol in workspace** (`ctrl+t`)
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- `#Foo` searches for `Foo` type in the current workspace
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- `#foo#` searches for `foo` function in the current workspace
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- `#Foo*` searches for `Foo` type among dependencies, excluding `stdlib`
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- Sorry for a weired UI, neither LSP, not VSCode have any sane API for filtering! :)
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* **Go to symbol in file** (`alt+shift+o`)
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* **Go to definition** ("correct" for `mod foo;` decls, approximate for other things).
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* commands (`ctrl+shift+p` or keybindings)
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- **Show Rust Syntax Tree** (use it to verify that plugin works)
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- **Rust Extend Selection**. Extends the current selection to the
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encompassing syntactic construct (expression, statement, item,
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module, etc). It works with multiple cursors. Do bind this command
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to a key, its super-useful!
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- **Rust Matching Brace**. If the cursor is on any brace
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(`<>(){}[]`) which is a part of a brace-pair, moves cursor to the
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matching brace.
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- **Rust Parent Module**. Navigate to the parent module of the current module
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- **Rust Join Lines**. Join selected lines into one, smartly fixing
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up whitespace and trailing commas.
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- **Run test at caret**. When cursor is inside a function marked
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`#[test]`, this action runs this specific test. If the cursor is
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outside of the test function, this re-runs the last test. Do bind
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this to a shortcut!
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* code actions (use `ctrl+.` to activate).
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`<|>` signifies cursor position
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- Flip `,`
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```
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// before:
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fn foo(x: usize,<|> dim: (usize, usize))
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// after:
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fn foo(dim: (usize, usize), x: usize)
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```
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- Add `#[derive]`
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```
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// before:
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struct Foo {
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<|>x: i32
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}
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// after:
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#[derive(<|>)]
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struct Foo {
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x: i32
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}
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```
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- Add `impl`
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```
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// before:
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struct Foo<'a, T: Debug> {
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<|>t: T
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}
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// after:
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struct Foo<'a, T: Debug> {
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t: T
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}
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impl<'a, T: Debug> Foo<'a, T> {
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<|>
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}
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```
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