Check SIM118 in comprehension (#1627)

Previously visibility::module_visibility() returned Private
for any module name starting with an underscore, resulting in
__init__.py being categorized as private, which in turn resulted
in D104 (Missing docstring in public package) never being reported
for __init__.py files.

.github/workflows/ci.yaml

@@ -12,7 +12,7 @@ env:
   RUSTUP_MAX_RETRIES: 10
 
 jobs:
-  cargo_build:
+  cargo-build:
     name: "cargo build"
     runs-on: ubuntu-latest
     steps:
@@ -36,17 +36,13 @@ jobs:
             ${{ runner.os }}-build-
             ${{ runner.os }}-
       - run: cargo build --all --release
-      - run: ./target/release/ruff_dev generate-rules-table
-      - run: ./target/release/ruff_dev generate-options
-      - run: git diff --quiet README.md || echo "::error file=README.md::This file is outdated. You may have to rerun 'cargo dev generate-options' and/or 'cargo dev generate-rules-table'."
-      - run: ./target/release/ruff_dev generate-check-code-prefix
-      - run: git diff --quiet src/checks_gen.rs || echo "::error file=src/checks_gen.rs::This file is outdated. You may have to rerun 'cargo dev generate-check-code-prefix'."
-      - run: git diff --exit-code -- README.md src/checks_gen.rs
-      - run: ./target/release/ruff_dev generate-json-schema
-      - run: git diff --quiet ruff.schema.json || echo "::error file=ruff.schema.json::This file is outdated. You may have to rerun 'cargo dev generate-json-schema'."
-      - run: git diff --exit-code -- ruff.schema.json
+      - run: ./target/release/ruff_dev generate-all
+      - run: git diff --quiet README.md || echo "::error file=README.md::This file is outdated. Run 'cargo +nightly dev generate-all'."
+      - run: git diff --quiet src/registry_gen.rs || echo "::error file=src/registry_gen.rs::This file is outdated. Run 'cargo +nightly dev generate-all'."
+      - run: git diff --quiet ruff.schema.json || echo "::error file=ruff.schema.json::This file is outdated. Run 'cargo +nightly dev generate-all'."
+      - run: git diff --exit-code -- README.md src/registry_gen.rs ruff.schema.json
 
-  cargo_fmt:
+  cargo-fmt:
     name: "cargo fmt"
     runs-on: ubuntu-latest
     steps:
@@ -82,6 +78,7 @@ jobs:
           toolchain: nightly-2022-11-01
           override: true
           components: clippy
+          target: wasm32-unknown-unknown
       - uses: actions/cache@v3
         env:
           cache-name: cache-cargo
@@ -95,8 +92,9 @@ jobs:
             ${{ runner.os }}-build-
             ${{ runner.os }}-
       - run: cargo clippy --workspace --all-targets --all-features -- -D warnings -W clippy::pedantic
+      - run: cargo clippy --workspace --target wasm32-unknown-unknown --all-features -- -D warnings -W clippy::pedantic
 
-  cargo_test:
+  cargo-test:
     name: "cargo test"
     runs-on: ubuntu-latest
     steps:
@@ -118,11 +116,45 @@ jobs:
             ${{ runner.os }}-build-${{ env.cache-name }}-
             ${{ runner.os }}-build-
             ${{ runner.os }}-
+      - run: cargo install cargo-insta
       - run: pip install black[d]==22.12.0
-      - run: cargo test --all
+      - name: Run tests
+        run: |
+          cargo insta test --all --delete-unreferenced-snapshots
+          git diff --exit-code
       - run: cargo test --package ruff --test black_compatibility_test -- --ignored
 
-  maturin_build:
+# TODO(charlie): Re-enable the `wasm-pack` tests.
+# See: https://github.com/charliermarsh/ruff/issues/1425
+#  wasm-pack-test:
+#    name: "wasm-pack test"
+#    runs-on: ubuntu-latest
+#    env:
+#      WASM_BINDGEN_TEST_TIMEOUT: 60
+#    steps:
+#      - uses: actions/checkout@v3
+#      - uses: actions-rs/toolchain@v1
+#        with:
+#          profile: minimal
+#          toolchain: nightly-2022-11-01
+#          override: true
+#      - uses: actions/cache@v3
+#        env:
+#          cache-name: cache-cargo
+#        with:
+#          path: |
+#            ~/.cargo/registry
+#            ~/.cargo/git
+#          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
+#          restore-keys: |
+#            ${{ runner.os }}-build-${{ env.cache-name }}-
+#            ${{ runner.os }}-build-
+#            ${{ runner.os }}-
+#      - uses: jetli/wasm-pack-action@v0.4.0
+#      - uses: jetli/wasm-bindgen-action@v0.2.0
+#      - run: wasm-pack test --node
+
+  maturin-build:
     name: "maturin build"
     runs-on: ubuntu-latest
     steps:
@@ -149,3 +181,15 @@ jobs:
             ${{ runner.os }}-build-
             ${{ runner.os }}-
       - run: maturin build -b bin
+
+  typos:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout Actions Repository
+      uses: actions/checkout@v2
+
+    - name: Check spelling of file.txt
+      uses: crate-ci/typos@master
+      with:
+        files: .

.github/workflows/playground.yaml

@@ -0,0 +1,50 @@
+name: "[Playground] Release"
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [main]
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  RUSTUP_MAX_RETRIES: 10
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    env:
+       CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly-2022-11-01
+          override: true
+          target: wasm32-unknown-unknown
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+          cache: "npm"
+          cache-dependency-path: playground/package-lock.json
+      - uses: jetli/wasm-pack-action@v0.4.0
+      - uses: jetli/wasm-bindgen-action@v0.2.0
+      - name: "Run wasm-pack"
+        run: wasm-pack build --target web --out-dir playground/src/pkg
+      - name: "Install Node dependencies"
+        run: npm ci
+        working-directory: playground
+      - name: "Run TypeScript checks"
+        run: npm run check
+        working-directory: playground
+      - name: "Build JavaScript bundle"
+        run: npm run build
+        working-directory: playground
+      - name: "Deploy to Cloudflare Pages"
+        if: ${{ env.CF_API_TOKEN_EXISTS == 'true' }}
+        uses: cloudflare/wrangler-action@2.0.0
+        with:
+          apiToken: ${{ secrets.CF_API_TOKEN }}
+          accountId: ${{ secrets.CF_ACCOUNT_ID }}
+          command: pages publish playground/dist --project-name=ruff --branch ${GITHUB_HEAD_REF} --commit-hash ${GITHUB_SHA}

.gitignore

@@ -181,3 +181,4 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 .idea/
+.vimspector.json

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.193
+    rev: v0.0.210
     hooks:
       - id: ruff
 

CONTRIBUTING.md

@@ -9,6 +9,15 @@ free to submit a PR. For larger changes (e.g., new lint rules, new functionality
 options), consider submitting an [Issue](https://github.com/charliermarsh/ruff/issues) outlining
 your proposed change.
 
+If you're looking for a place to start, we recommend implementing a new lint rule (see:
+[_Adding a new lint rule_](#example-adding-a-new-lint-rule), which will allow you to learn from and
+pattern-match against the examples in the existing codebase. Many lint rules are inspired by
+existing Python plugins, which can be used as a reference implementation.
+
+As a concrete example: consider taking on one of the rules in [`flake8-simplify`](https://github.com/charliermarsh/ruff/issues/998),
+and looking to the originating [Python source](https://github.com/MartinThoma/flake8-simplify) for
+guidance.
+
 ### Prerequisites
 
 Ruff is written in Rust. You'll need to install the
@@ -47,66 +56,61 @@ prior to merging.
 
 There are four phases to adding a new lint rule:
 
-1. Define the rule in `src/checks.rs`.
+1. Define the rule in `src/registry.rs`.
 2. Define the _logic_ for triggering the rule in `src/checkers/ast.rs` (for AST-based checks),
    `src/checkers/tokens.rs` (for token-based checks), or `src/checkers/lines.rs` (for text-based checks).
 3. Add a test fixture.
 4. Update the generated files (documentation and generated code).
 
-To define the rule, open up `src/checks.rs`. You'll need to define both a `CheckCode` and
+To define the rule, open up `src/registry.rs`. You'll need to define both a `CheckCode` and
 `CheckKind`. As an example, you can grep for `E402` and `ModuleImportNotAtTopOfFile`, and follow the
 pattern implemented therein.
 
-To trigger the rule, you'll likely want to augment the logic in `src/check_ast.rs`, which defines
+To trigger the rule, you'll likely want to augment the logic in `src/checkers/ast.rs`, which defines
 the Python AST visitor, responsible for iterating over the abstract syntax tree and collecting
-lint-rule violations as it goes. If you need to inspect the AST, you can run `cargo dev print-ast`
-with a Python file. Grep for the `Check::new` invocations to understand how other, similar rules
-are implemented.
+lint-rule violations as it goes. If you need to inspect the AST, you can run
+`cargo +nightly dev print-ast` with a Python file. Grep for the `Check::new` invocations to
+understand how other, similar rules are implemented.
 
-To add a test fixture, create a file under `resources/test/fixtures`, named to match the `CheckCode`
-you defined earlier (e.g., `E402.py`). This file should contain a variety of violations and
-non-violations designed to evaluate and demonstrate the behavior of your lint rule. Run Ruff locally
-with (e.g.) `cargo run resources/test/fixtures/E402.py --no-cache`. Once you're satisfied with the
-output, codify the behavior as a snapshot test by adding a new `testcase` macro to the `mod tests`
-section of `src/linter.rs`, like so:
+To add a test fixture, create a file under `resources/test/fixtures/[plugin-name]`, named to match
+the `CheckCode` you defined earlier (e.g., `E402.py`). This file should contain a variety of
+violations and non-violations designed to evaluate and demonstrate the behavior of your lint rule.
 
-```rust
-#[test_case(CheckCode::A001, Path::new("A001.py"); "A001")]
-...
-```
+Run `cargo +nightly dev generate-all` to generate the code for your new fixture. Then run Ruff
+locally with (e.g.) `cargo run resources/test/fixtures/pycodestyle/E402.py --no-cache --select E402`.
 
-Then, run `cargo test`. Your test will fail, but you'll be prompted to follow-up with
-`cargo insta review`. Accept the generated snapshot, then commit the snapshot file alongside the
-rest of your changes.
+Once you're satisfied with the output, codify the behavior as a snapshot test by adding a new
+`test_case` macro in the relevant `src/[plugin-name]/mod.rs` file. Then, run `cargo test`. Your
+test will fail, but you'll be prompted to follow-up with `cargo insta review`. Accept the generated
+snapshot, then commit the snapshot file alongside the rest of your changes.
 
-Finally, to update the documentation, run `cargo dev generate-rules-table` from the repo root. To
-update the generated prefix map, run `cargo dev generate-check-code-prefix`. Both of these commands
-should be run whenever a new check is added to the codebase.
+Finally, regenerate the documentation and generated code with `cargo +nightly dev generate-all`.
 
 ### Example: Adding a new configuration option
 
-Ruff's user-facing settings live in two places: first, the command-line options defined with
-[clap](https://docs.rs/clap/latest/clap/) via the `Cli` struct in `src/main.rs`; and second, the
-`Config` struct defined `src/pyproject.rs`, which is responsible for extracting user-defined
-settings from a `pyproject.toml` file.
+Ruff's user-facing settings live in a few different places.
 
-Ultimately, these two sources of configuration are merged into the `Settings` struct defined
-in `src/settings.rs`, which is then threaded through the codebase.
+First, the command-line options are defined via the `Cli` struct in `src/cli.rs`.
 
-To add a new configuration option, you'll likely want to _both_ add a CLI option to `src/main.rs`
-_and_ a `pyproject.toml` parameter to `src/pyproject.rs`. If you want to pattern-match against an
-existing example, grep for `dummy_variable_rgx`, which defines a regular expression to match against
-acceptable unused variables (e.g., `_`).
+Second, the `pyproject.toml` options are defined in `src/settings/options.rs` (via the `Options`
+struct), `src/settings/configuration.rs` (via the `Configuration` struct), and `src/settings/mod.rs`
+(via the `Settings` struct). These represent, respectively: the schema used to parse the
+`pyproject.toml` file; an internal, intermediate representation; and the final, internal
+representation used to power Ruff.
 
-If the new plugin's configuration should be cached between runs, you'll need to add it to the
-`Hash` implementation for `Settings` in `src/settings/mod.rs`.
+To add a new configuration option, you'll likely want to modify these latter few files (along with
+`cli.rs`, if appropriate). If you want to pattern-match against an existing example, grep for
+`dummy_variable_rgx`, which defines a regular expression to match against acceptable unused
+variables (e.g., `_`).
+
+Note that plugin-specific configuration options are defined in their own modules (e.g.,
+`src/flake8_unused_arguments/settings.rs`).
 
 You may also want to add the new configuration option to the `flake8-to-ruff` tool, which is
 responsible for converting `flake8` configuration files to Ruff's TOML format. This logic
 lives in `flake8_to_ruff/src/converter.rs`.
 
-Run `cargo dev generate-options` to update the documentation for supported configuration options,
-and `cargo dev generate-json-schema` to update the JSON schema for `tool.ruff` in `pyproject.toml`.
+Finally, regenerate the documentation and generated code with `cargo +nightly dev generate-all`.
 
 ## Release process
 

Cargo.lock

@@ -61,9 +61,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.66"
+version = "1.0.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "216261ddc8289130e551ddcd5ce8a064710c0d064a4d2895c67151c92b5443f6"
+checksum = "2cb2f989d18dd141ab8ae82f64d1a8cdd37e0840f73a406896cf5e99502fab61"
 
 [[package]]
 name = "ascii"
@@ -86,7 +86,7 @@ version = "2.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fa3d466004a8b4cb1bc34044240a2fd29d17607e2e3bd613eb44fd48e8100da3"
 dependencies = [
- "bstr 1.0.1",
+ "bstr 1.1.0",
  "doc-comment",
  "predicates",
  "predicates-core",
@@ -160,9 +160,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fca0852af221f458706eb0725c03e4ed6c46af9ac98e6a689d5e634215d594dd"
+checksum = "b45ea9b00a7b3f2988e9a65ad3917e62123c38dba709b666506207be96d1790b"
 dependencies = [
  "memchr",
  "once_cell",
@@ -193,9 +193,9 @@ checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
 
 [[package]]
 name = "cc"
-version = "1.0.77"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9f73505338f7d905b19d18738976aae232eb46b8efc15554ffc56deb5d9ebe4"
+checksum = "a20104e2335ce8a659d6dd92a51a767a0c062599c73b343fd152cb401e828c3d"
 
 [[package]]
 name = "cfg-if"
@@ -280,9 +280,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.0.29"
+version = "4.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d63b9e9c07271b9957ad22c173bae2a4d9a81127680962039296abcd2f8251d"
+checksum = "a7db700bc935f9e43e88d00b0850dae18a63773cfbec6d8e070fccf7fef89a39"
 dependencies = [
  "bitflags",
  "clap_derive",
@@ -295,11 +295,11 @@ dependencies = [
 
 [[package]]
 name = "clap_complete"
-version = "4.0.6"
+version = "4.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7b3c9eae0de7bf8e3f904a5e40612b21fb2e2e566456d177809a48b892d24da"
+checksum = "10861370d2ba66b0f5989f83ebf35db6421713fd92351790e7fdd6c36774c56b"
 dependencies = [
- "clap 4.0.29",
+ "clap 4.0.32",
 ]
 
 [[package]]
@@ -308,7 +308,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4160b4a4f72ef58bd766bad27c09e6ef1cc9d82a22f6a0f55d152985a4a48e31"
 dependencies = [
- "clap 4.0.29",
+ "clap 4.0.32",
  "clap_complete",
  "clap_complete_fig",
 ]
@@ -319,7 +319,7 @@ version = "4.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46b30e010e669cd021e5004f3be26cff6b7c08d2a8a0d65b48d43a8cc0efd6c3"
 dependencies = [
- "clap 4.0.29",
+ "clap 4.0.32",
  "clap_complete",
 ]
 
@@ -356,9 +356,9 @@ dependencies = [
 
 [[package]]
 name = "clearscreen"
-version = "1.0.10"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c969a6b6dadff9f3349b1f783f553e2411104763ca4789e1c6ca6a41f46a57b0"
+checksum = "41aa24cc5e1d6b3fc49ad4cd540b522fedcbe88bc6f259ff16e20e7010b6f8c7"
 dependencies = [
  "nix",
  "terminfo",
@@ -397,12 +397,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "common-path"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2382f75942f4b3be3690fe4f86365e9c853c1587d6ee58212cebf6e2a9ccd101"
-
 [[package]]
 name = "configparser"
 version = "3.0.2"
@@ -422,6 +416,26 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "console_error_panic_hook"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
+dependencies = [
+ "cfg-if 1.0.0",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "console_log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "501a375961cef1a0d44767200e66e4a559283097e91d0730b1d75dfb2f8a1494"
+dependencies = [
+ "log",
+ "web-sys",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.3"
@@ -524,9 +538,9 @@ checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
 
 [[package]]
 name = "cxx"
-version = "1.0.83"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdf07d07d6531bfcdbe9b8b739b104610c6508dcc4d63b410585faf338241daf"
+checksum = "5add3fc1717409d029b20c5b6903fc0c0b02fa6741d820054f4a2efa5e5816fd"
 dependencies = [
  "cc",
  "cxxbridge-flags",
@@ -536,9 +550,9 @@ dependencies = [
 
 [[package]]
 name = "cxx-build"
-version = "1.0.83"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2eb5b96ecdc99f72657332953d4d9c50135af1bac34277801cc3937906ebd39"
+checksum = "b4c87959ba14bc6fbc61df77c3fcfe180fc32b93538c4f1031dd802ccb5f2ff0"
 dependencies = [
  "cc",
  "codespan-reporting",
@@ -551,15 +565,15 @@ dependencies = [
 
 [[package]]
 name = "cxxbridge-flags"
-version = "1.0.83"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac040a39517fd1674e0f32177648334b0f4074625b5588a64519804ba0553b12"
+checksum = "69a3e162fde4e594ed2b07d0f83c6c67b745e7f28ce58c6df5e6b6bef99dfb59"
 
 [[package]]
 name = "cxxbridge-macro"
-version = "1.0.83"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1362b0ddcfc4eb0a1f57b68bd77dd99f0e826958a96abd0ae9bd092e114ffed6"
+checksum = "3e7e2adeb6a0d4a282e581096b06e1791532b7d576dcde5ccd9382acf55db8e6"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -712,9 +726,9 @@ dependencies = [
 
 [[package]]
 name = "filetime"
-version = "0.2.18"
+version = "0.2.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b9663d381d07ae25dc88dbdf27df458faa83a9b25336bcac83d5e452b5fc9d3"
+checksum = "4e884668cd0c7480504233e951174ddc3b382f7c2666e3b7310b5c4e7b0c37f9"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
@@ -730,10 +744,10 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
 
 [[package]]
 name = "flake8-to-ruff"
-version = "0.0.193-dev.0"
+version = "0.0.210-dev.0"
 dependencies = [
  "anyhow",
- "clap 4.0.29",
+ "clap 4.0.32",
  "configparser",
  "once_cell",
  "regex",
@@ -952,9 +966,9 @@ dependencies = [
 
 [[package]]
 name = "insta"
-version = "1.22.0"
+version = "1.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "197f4e300af8b23664d4077bf5c40e0afa9ba66a567bb5a51d3def3c7b287d1c"
+checksum = "e48b08a091dfe5b09a6a9688c468fdd5b4396e92ce09e2eb932f0884b02788a4"
 dependencies = [
  "console",
  "lazy_static",
@@ -985,9 +999,9 @@ dependencies = [
 
 [[package]]
 name = "is-terminal"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "927609f78c2913a6f6ac3c27a4fe87f43e2a35367c0c4b0f8265e8f49a104330"
+checksum = "28dfb6c8100ccc63462345b67d1bbc3679177c75ee4bf59bf29c8b1d110b8189"
 dependencies = [
  "hermit-abi 0.2.6",
  "io-lifetimes",
@@ -1006,9 +1020,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "1.0.4"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"
+checksum = "fad582f4b9e86b6caa621cabeb0963332d92eea04729ab12892c2533951e6440"
 
 [[package]]
 name = "joinery"
@@ -1115,9 +1129,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.138"
+version = "0.2.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
+checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
 
 [[package]]
 name = "libcst"
@@ -1145,9 +1159,9 @@ dependencies = [
 
 [[package]]
 name = "link-cplusplus"
-version = "1.0.7"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9272ab7b96c9046fbc5bc56c06c117cb639fe2d509df0c421cad82d2915cf369"
+checksum = "ecd207c9c713c34f95a097a5b029ac2ce6010530c7b49d7fea24d977dede04f5"
 dependencies = [
  "cc",
 ]
@@ -1160,9 +1174,9 @@ checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f9f08d8963a6c613f4b1a78f4f4a4dbfadf8e6545b2d72861731e4858b8b47f"
+checksum = "f051f77a7c8e6957c0696eac88f26b0117e54f52d3fc682ab19397a8812846a4"
 
 [[package]]
 name = "lock_api"
@@ -1234,6 +1248,12 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "natord"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "308d96db8debc727c3fd9744aac51751243420e46edf401010908da7f8d5e57c"
+
 [[package]]
 name = "new_debug_unreachable"
 version = "1.0.4"
@@ -1248,13 +1268,14 @@ checksum = "d906846a98739ed9d73d66e62c2641eef8321f1734b7a1156ab045a0248fb2b3"
 
 [[package]]
 name = "nix"
-version = "0.24.3"
+version = "0.26.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa52e972a9a719cecb6864fb88568781eb706bac2cd1d4f04a648542dbf78069"
+checksum = "46a58d1d356c6597d08cde02c2f09d785b09e28711837b1ed667dc652c08a694"
 dependencies = [
  "bitflags",
  "cfg-if 1.0.0",
  "libc",
+ "static_assertions",
 ]
 
 [[package]]
@@ -1334,11 +1355,11 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "1.14.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6058e64324c71e02bc2b150e4f3bc8286db6c83092132ffa3f6b1eab0f9def5"
+checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
 dependencies = [
- "hermit-abi 0.1.19",
+ "hermit-abi 0.2.6",
  "libc",
 ]
 
@@ -1385,9 +1406,9 @@ dependencies = [
 
 [[package]]
 name = "paste"
-version = "1.0.9"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1de2e551fb905ac83f73f7aedf2f0cb4a0da7e35efa24a202a936269f1f18e1"
+checksum = "d01a5bd0424d00070b0098dd17ebca6f961a959dead1dbcbbbc1d1cd8d3deeba"
 
 [[package]]
 name = "path-absolutize"
@@ -1625,9 +1646,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.47"
+version = "1.0.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
+checksum = "57a8eca9f9c4ffde41714334dee777596264c7825420f521abc92b5b5deb63a5"
 dependencies = [
  "unicode-ident",
 ]
@@ -1657,9 +1678,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "8856d8364d252a14d474036ea1358d63c9e6965c8e5c1885c18f73d70bff9c7b"
 dependencies = [
  "proc-macro2",
 ]
@@ -1753,11 +1774,10 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.6.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e060280438193c554f654141c9ea9417886713b7acd75974c85b18a69a88e0b"
+checksum = "6db3a213adf02b3bcfd2d3846bb41cb22857d131789e01df434fb7e7bc0759b7"
 dependencies = [
- "crossbeam-deque",
  "either",
  "rayon-core",
 ]
@@ -1853,7 +1873,7 @@ dependencies = [
 
 [[package]]
 name = "ruff"
-version = "0.0.193"
+version = "0.0.210"
 dependencies = [
  "annotate-snippets 0.9.1",
  "anyhow",
@@ -1862,12 +1882,14 @@ dependencies = [
  "bincode",
  "bitflags",
  "cachedir",
+ "cfg-if 1.0.0",
  "chrono",
- "clap 4.0.29",
+ "clap 4.0.32",
  "clap_complete_command",
  "clearscreen",
  "colored",
- "common-path",
+ "console_error_panic_hook",
+ "console_log",
  "criterion",
  "dirs 4.0.0",
  "fern",
@@ -1878,11 +1900,14 @@ dependencies = [
  "ignore",
  "insta",
  "itertools",
+ "js-sys",
  "libcst",
  "log",
+ "natord",
  "nohash-hasher",
  "notify",
  "num-bigint",
+ "num-traits",
  "once_cell",
  "path-absolutize",
  "quick-junit",
@@ -1895,9 +1920,12 @@ dependencies = [
  "rustpython-common",
  "rustpython-parser",
  "schemars",
+ "semver",
  "serde",
+ "serde-wasm-bindgen",
  "serde_json",
  "shellexpand",
+ "similar",
  "strum",
  "strum_macros",
  "test-case",
@@ -1907,14 +1935,16 @@ dependencies = [
  "update-informer",
  "ureq",
  "walkdir",
+ "wasm-bindgen",
+ "wasm-bindgen-test",
 ]
 
 [[package]]
 name = "ruff_dev"
-version = "0.0.193"
+version = "0.0.210"
 dependencies = [
  "anyhow",
- "clap 4.0.29",
+ "clap 4.0.32",
  "codegen",
  "itertools",
  "libcst",
@@ -1927,11 +1957,12 @@ dependencies = [
  "serde_json",
  "strum",
  "strum_macros",
+ "textwrap",
 ]
 
 [[package]]
 name = "ruff_macros"
-version = "0.0.193"
+version = "0.0.210"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1947,9 +1978,9 @@ checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
 [[package]]
 name = "rustix"
-version = "0.36.4"
+version = "0.36.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb93e85278e08bb5788653183213d3a60fc242b10cb9be96586f5a73dcb67c23"
+checksum = "a3807b5d10909833d3e9acd1eb5fb988f79376ff10fce42937de71a449c4c588"
 dependencies = [
  "bitflags",
  "errno",
@@ -1974,7 +2005,7 @@ dependencies = [
 [[package]]
 name = "rustpython-ast"
 version = "0.1.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=1b6cb170e925a43d605b3fed9f6b878e63e47744#1b6cb170e925a43d605b3fed9f6b878e63e47744"
+source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
 dependencies = [
  "num-bigint",
  "rustpython-common",
@@ -1984,11 +2015,13 @@ dependencies = [
 [[package]]
 name = "rustpython-common"
 version = "0.0.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=1b6cb170e925a43d605b3fed9f6b878e63e47744#1b6cb170e925a43d605b3fed9f6b878e63e47744"
+source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
 dependencies = [
  "ascii",
+ "bitflags",
  "cfg-if 1.0.0",
  "hexf-parse",
+ "itertools",
  "lexical-parse-float",
  "libc",
  "lock_api",
@@ -2007,7 +2040,7 @@ dependencies = [
 [[package]]
 name = "rustpython-compiler-core"
 version = "0.1.2"
-source = "git+https://github.com/RustPython/RustPython.git?rev=1b6cb170e925a43d605b3fed9f6b878e63e47744#1b6cb170e925a43d605b3fed9f6b878e63e47744"
+source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
 dependencies = [
  "bincode",
  "bitflags",
@@ -2024,7 +2057,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser"
 version = "0.1.2"
-source = "git+https://github.com/RustPython/RustPython.git?rev=1b6cb170e925a43d605b3fed9f6b878e63e47744#1b6cb170e925a43d605b3fed9f6b878e63e47744"
+source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
 dependencies = [
  "ahash",
  "anyhow",
@@ -2048,15 +2081,15 @@ dependencies = [
 
 [[package]]
 name = "rustversion"
-version = "1.0.9"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97477e48b4cf8603ad5f7aaf897467cf42ab4218a38ef76fb14c2d6773a6d6a8"
+checksum = "5583e89e108996506031660fe09baa5011b9dd0341b89029313006d1fb508d70"
 
 [[package]]
 name = "ryu"
-version = "1.0.11"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
+checksum = "7b4b9743ed687d4b4bcedf9ff5eaa7398495ae14e61cba0a295704edbc7decde"
 
 [[package]]
 name = "same-file"
@@ -2091,6 +2124,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -2099,9 +2138,9 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "scratch"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8132065adcfd6e02db789d9285a0deb2f3fcb04002865ab67d5fb103533898"
+checksum = "ddccb15bcce173023b3fedd9436f882a0739b8dfb45e4f6b6002bee5929f61b2"
 
 [[package]]
 name = "sct"
@@ -2115,24 +2154,35 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "1.0.14"
+version = "1.0.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e25dfac463d778e353db5be2449d1cce89bd6fd23c9f1ea21310ce6e5a1b29c4"
+checksum = "58bc9567378fc7690d6b2addae4e60ac2eeea07becb2c64b9f218b53865cba2a"
 
 [[package]]
 name = "serde"
-version = "1.0.148"
+version = "1.0.151"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e53f64bb4ba0191d6d0676e1b141ca55047d83b74f5607e6d8eb88126c52c2dc"
+checksum = "97fed41fc1a24994d044e6db6935e69511a1153b52c15eb42493b26fa87feba0"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
-name = "serde_derive"
-version = "1.0.148"
+name = "serde-wasm-bindgen"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a55492425aa53521babf6137309e7d34c20bbfbbfcfe2c7f3a047fd1f6b92c0c"
+checksum = "e3b4c031cd0d9014307d82b8abf653c0290fbdaeb4c02d00c63cf52f728628bf"
+dependencies = [
+ "js-sys",
+ "serde",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.151"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "255abe9a125a985c05190d687b320c12f9b1f0b99445e608c21ba0782c719ad8"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2208,9 +2258,9 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "str_indices"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d9199fa80c817e074620be84374a520062ebac833f358d74b37060ce4a0f2c0"
+checksum = "5f026164926842ec52deb1938fae44f83dfdb82d0a5b0270c5bd5935ab74d6dd"
 
 [[package]]
 name = "string_cache"
@@ -2255,9 +2305,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.105"
+version = "1.0.107"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60b9b43d45702de4c839cb9b51d9f529c5dd26a4aff255b42b1ebc03e88ee908"
+checksum = "1f4064b5b16e03ae50984a5a8ed5d4f8803e6bc1fd170a3cda91a1be4b18e3f5"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2362,18 +2412,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.37"
+version = "1.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10deb33631e3c9018b9baf9dcbbc4f737320d2b576bac10f6aefa048fa407e3e"
+checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.37"
+version = "1.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
+checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2447,9 +2497,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.9"
+version = "0.5.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
+checksum = "1333c76748e868a4d9d1017b5ab53171dfd095f70c712fdb4653a406547f598f"
 dependencies = [
  "serde",
 ]
@@ -2536,9 +2586,9 @@ checksum = "099b7128301d285f79ddd55b9a83d5e6b9e97c92e0ea0daebee7263e932de992"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.5"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
+checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
 
 [[package]]
 name = "unicode-linebreak"
@@ -2585,9 +2635,9 @@ checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
 [[package]]
 name = "update-informer"
-version = "0.5.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f154aee470c0882ea0f3b1cc2a46c5f4d24f282655f7b0cec065614fe24c447f"
+checksum = "152ff185ca29f7f487c51ca785b0f1d85970c4581f4cdd12ed499227890200f5"
 dependencies = [
  "directories",
  "semver",
@@ -2707,6 +2757,18 @@ dependencies = [
  "wasm-bindgen-shared",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23639446165ca5a5de86ae1d8896b737ae80319560fbaa4c2887b7da6e7ebd7d"
+dependencies = [
+ "cfg-if 1.0.0",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.83"
@@ -2736,6 +2798,30 @@ version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"
 
+[[package]]
+name = "wasm-bindgen-test"
+version = "0.3.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09d2fff962180c3fadf677438054b1db62bee4aa32af26a45388af07d1287e1d"
+dependencies = [
+ "console_error_panic_hook",
+ "js-sys",
+ "scoped-tls",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-test-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.3.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4683da3dfc016f704c9f82cf401520c4f1cb3ee440f7f52b3d6ac29506a49ca7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.60"
@@ -2758,9 +2844,9 @@ dependencies = [
 
 [[package]]
 name = "webpki-roots"
-version = "0.22.5"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "368bfe657969fb01238bb756d351dcade285e0f6fcbd36dcb23359a5169975be"
+checksum = "b6c71e40d7d2c34a5106301fb632274ca37242cd0c9d3e64dbece371a40a2d87"
 dependencies = [
  "webpki",
 ]

Cargo.toml

@@ -6,12 +6,19 @@ members = [
 
 [package]
 name = "ruff"
-version = "0.0.193"
+version = "0.0.210"
+authors = ["Charlie Marsh <charlie.r.marsh@gmail.com>"]
 edition = "2021"
 rust-version = "1.65.0"
+documentation = "https://github.com/charliermarsh/ruff"
+homepage = "https://github.com/charliermarsh/ruff"
+repository = "https://github.com/charliermarsh/ruff"
+readme = "README.md"
+license = "MIT"
 
 [lib]
 name = "ruff"
+crate-type = ["cdylib", "rlib"]
 
 [dependencies]
 annotate-snippets = { version = "0.9.1", features = ["color"] }
@@ -20,11 +27,11 @@ atty = { version = "0.2.14" }
 bincode = { version = "1.3.3" }
 bitflags = { version = "1.3.2" }
 cachedir = { version = "0.3.0" }
+cfg-if = { version = "1.0.0" }
 chrono = { version = "0.4.21", default-features = false, features = ["clock"] }
 clap = { version = "4.0.1", features = ["derive"] }
-clap_complete_command = "0.4.0"
+clap_complete_command = { version = "0.4.0" }
 colored = { version = "2.0.0" }
-common-path = { version = "1.0.0" }
 dirs = { version = "4.0.0" }
 fern = { version = "0.6.1" }
 filetime = { version = "0.2.17" }
@@ -34,46 +41,58 @@ ignore = { version = "0.4.18" }
 itertools = { version = "0.10.5" }
 libcst = { git = "https://github.com/charliermarsh/LibCST", rev = "f2f0b7a487a8725d161fe8b3ed73a6758b21e177" }
 log = { version = "0.4.17" }
+natord = { version = "1.0.9" }
 nohash-hasher = { version = "0.2.0" }
 notify = { version = "5.0.0" }
 num-bigint = { version = "0.4.3" }
+num-traits = "0.2.15"
 once_cell = { version = "1.16.0" }
 path-absolutize = { version = "3.0.14", features = ["once_cell_cache", "use_unix_paths_on_wasm"] }
 quick-junit = { version = "0.3.2" }
-rayon = { version = "1.5.3" }
 regex = { version = "1.6.0" }
 ropey = { version = "1.5.0", features = ["cr_lines", "simd"], default-features = false }
-ruff_macros = { version = "0.0.193", path = "ruff_macros" }
+ruff_macros = { version = "0.0.210", path = "ruff_macros" }
 rustc-hash = { version = "1.1.0" }
-rustpython-ast = { features = ["unparse"], git = "https://github.com/RustPython/RustPython.git", rev = "1b6cb170e925a43d605b3fed9f6b878e63e47744" }
-rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "1b6cb170e925a43d605b3fed9f6b878e63e47744" }
-rustpython-parser = { features = ["lalrpop"], git = "https://github.com/RustPython/RustPython.git", rev = "1b6cb170e925a43d605b3fed9f6b878e63e47744" }
+rustpython-ast = { features = ["unparse"], git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
+rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
+rustpython-parser = { features = ["lalrpop"], git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
 schemars = { version = "0.8.11" }
+semver = { version = "1.0.16" }
 serde = { version = "1.0.147", features = ["derive"] }
 serde_json = { version = "1.0.87" }
 shellexpand = { version = "3.0.0" }
+similar = { version = "2.2.1" }
 strum = { version = "0.24.1", features = ["strum_macros"] }
 strum_macros = { version = "0.24.3" }
 textwrap = { version = "0.16.0" }
 titlecase = { version = "2.2.1" }
 toml = { version = "0.5.9" }
-update-informer = { version = "0.5.0", default-features = false, features = ["pypi"], optional = true }
 walkdir = { version = "2.3.2" }
 
 [target.'cfg(not(target_family = "wasm"))'.dependencies]
-clearscreen = { version = "1.0.10" } # uses which
+clearscreen = { version = "2.0.0" }
+rayon = { version = "1.5.3" }
+update-informer = { version = "0.6.0", default-features = false, features = ["pypi"], optional = true }
 
 # https://docs.rs/getrandom/0.2.7/getrandom/#webassembly-support
 # For (future) wasm-pack support
 [target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
 getrandom = { version = "0.2.7", features = ["js"] }
+console_error_panic_hook = { version = "0.1.7" }
+console_log = { version = "0.2.0" }
+serde-wasm-bindgen = { version = "0.4" }
+js-sys = { version = "0.3.60" }
+wasm-bindgen = { version = "0.2.83" }
 
 [dev-dependencies]
-assert_cmd = { version = "2.0.4" }
-criterion = { version = "0.4.0" }
 insta = { version = "1.19.1", features = ["yaml"] }
 test-case = { version = "2.2.2" }
 ureq = { version = "2.5.0", features = [] }
+wasm-bindgen-test = { version = "0.3.33" }
+
+[target.'cfg(not(target_family = "wasm"))'.dev-dependencies]
+assert_cmd = { version = "2.0.4" }
+criterion = { version = "0.4.0" }
 
 [features]
 default = ["update-informer"]
@@ -91,6 +110,11 @@ opt-level = 3
 [profile.dev.package.similar]
 opt-level = 3
 
+# Reduce complexity of a parser function that would trigger a locals limit in a wasm tool.
+# https://github.com/bytecodealliance/wasm-tools/blob/b5c3d98e40590512a3b12470ef358d5c7b983b15/crates/wasmparser/src/limits.rs#L29
+[profile.dev.package.rustpython-parser]
+opt-level = 1
+
 [[bench]]
 name = "source_code_locator"
 harness = false

LICENSE

@@ -388,6 +388,31 @@ are:
     SOFTWARE.
   """
 
+- flake8-implicit-str-concat, licensed as follows:
+  """
+    The MIT License (MIT)
+
+    Copyright (c) 2019 Dylan Turner
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.
+  """
+
 - flake8-import-conventions, licensed as follows:
   """
     MIT License

README.md

@@ -8,7 +8,11 @@
 An extremely fast Python linter, written in Rust.
 
 <p align="center">
-  <img alt="Bar chart with benchmark results" src="https://user-images.githubusercontent.com/1309177/187504482-6d9df992-a81d-4e86-9f6a-d958741c8182.svg">
+  <picture align="center">
+    <source media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/1309177/210156880-a97c2a0d-2c03-4393-8695-36547935a94e.svg">
+    <source media="(prefers-color-scheme: light)" srcset="https://user-images.githubusercontent.com/1309177/210156881-a88fd142-5008-4695-9407-d028cec3eff7.svg">
+    <img alt="Shows a bar chart with benchmark results." src="https://user-images.githubusercontent.com/1309177/210156881-a88fd142-5008-4695-9407-d028cec3eff7.svg">
+  </picture>
 </p>
 
 <p align="center">
@@ -22,16 +26,22 @@ An extremely fast Python linter, written in Rust.
 - 📦  Built-in caching, to avoid re-analyzing unchanged files
 - 🔧  Autofix support, for automatic error correction (e.g., automatically remove unused imports)
 - ⚖️  [Near-parity](#how-does-ruff-compare-to-flake8) with the built-in Flake8 rule set
-- 🔌  Native re-implementations of popular Flake8 plugins, like [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)
+- 🔌  Native re-implementations of dozens of Flake8 plugins, like [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)
+- ⌨️  First-party editor integrations for [VS Code](https://github.com/charliermarsh/ruff-vscode) and [more](https://github.com/charliermarsh/ruff-lsp)
+- 🌎  Monorepo-friendly, with [hierarchical and cascading configuration](#pyprojecttoml-discovery)
 
 Ruff aims to be orders of magnitude faster than alternative tools while integrating more
-functionality behind a single, common interface. Ruff can be used to replace Flake8 (plus a variety
-of plugins), [`isort`](https://pypi.org/project/isort/), [`pydocstyle`](https://pypi.org/project/pydocstyle/),
-[`yesqa`](https://github.com/asottile/yesqa), [`eradicate`](https://pypi.org/project/eradicate/),
-and even a subset of [`pyupgrade`](https://pypi.org/project/pyupgrade/) and [`autoflake`](https://pypi.org/project/autoflake/)
-all while executing tens or hundreds of times faster than any individual tool. Ruff goes beyond the
-responsibilities of a traditional linter, instead functioning as an advanced code transformation
-tool capable of upgrading type annotations, rewriting class definitions, sorting imports, and more.
+functionality behind a single, common interface.
+
+Ruff can be used to replace Flake8 (plus a variety of plugins), [`isort`](https://pypi.org/project/isort/),
+[`pydocstyle`](https://pypi.org/project/pydocstyle/), [`yesqa`](https://github.com/asottile/yesqa),
+[`eradicate`](https://pypi.org/project/eradicate/), [`pyupgrade`](https://pypi.org/project/pyupgrade/),
+and [`autoflake`](https://pypi.org/project/autoflake/), all while executing tens or hundreds of
+times faster than any individual tool.
+
+Ruff goes beyond the responsibilities of a traditional linter, instead functioning as an advanced
+code transformation tool capable of upgrading type annotations, rewriting class definitions, sorting
+imports, and more.
 
 Ruff is extremely actively developed and used in major open-source projects like:
 
@@ -39,11 +49,14 @@ Ruff is extremely actively developed and used in major open-source projects like
 - [Bokeh](https://github.com/bokeh/bokeh)
 - [Zulip](https://github.com/zulip/zulip)
 - [Pydantic](https://github.com/pydantic/pydantic)
+- [Sphinx](https://github.com/sphinx-doc/sphinx)
 - [Hatch](https://github.com/pypa/hatch)
 - [Jupyter](https://github.com/jupyter-server/jupyter_server)
 - [Synapse](https://github.com/matrix-org/synapse)
-- [Ibis](https://github.com/ibis-project/ibis)
 - [Saleor](https://github.com/saleor/saleor)
+- [Polars](https://github.com/pola-rs/polars)
+- [Ibis](https://github.com/ibis-project/ibis)
+- [`pyca/cryptography`](https://github.com/pyca/cryptography)
 
 Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-much-much-faster).
 
@@ -89,8 +102,10 @@ of [Conda](https://docs.conda.io/en/latest/):
    1. [flake8-comprehensions (C4)](#flake8-comprehensions-c4)
    1. [flake8-debugger (T10)](#flake8-debugger-t10)
    1. [flake8-errmsg (EM)](#flake8-errmsg-em)
+   1. [flake8-implicit-str-concat (ISC)](#flake8-implicit-str-concat-isc)
    1. [flake8-import-conventions (ICN)](#flake8-import-conventions-icn)
    1. [flake8-print (T20)](#flake8-print-t20)
+   1. [flake8-pytest-style (PT)](#flake8-pytest-style-pt)
    1. [flake8-quotes (Q)](#flake8-quotes-q)
    1. [flake8-return (RET)](#flake8-return-ret)
    1. [flake8-simplify (SIM)](#flake8-simplify-sim)
@@ -101,6 +116,7 @@ of [Conda](https://docs.conda.io/en/latest/):
    1. [pandas-vet (PD)](#pandas-vet-pd)
    1. [pygrep-hooks (PGH)](#pygrep-hooks-pgh)
    1. [Pylint (PLC, PLE, PLR, PLW)](#pylint-plc-ple-plr-plw)
+   1. [flake8-pie (PIE)](#flake8-pie-pie)
    1. [Ruff-specific rules (RUF)](#ruff-specific-rules-ruf)<!-- End auto-generated table of contents. -->
 1. [Editor Integrations](#editor-integrations)
 1. [FAQ](#faq)
@@ -146,9 +162,9 @@ pacman -S ruff
 To run Ruff, try any of the following:
 
 ```shell
-ruff path/to/code/to/check.py
-ruff path/to/code/
-ruff path/to/code/*.py
+ruff path/to/code/to/check.py  # Run Ruff over `check.py`
+ruff path/to/code/             # Run Ruff over all files in `/path/to/code` (and any subdirectories)
+ruff path/to/code/*.py         # Run Ruff over all `.py` files in `/path/to/code`
 ```
 
 You can run Ruff in `--watch` mode to automatically re-run on-change:
@@ -162,7 +178,7 @@ Ruff also works with [pre-commit](https://pre-commit.com):
 ```yaml
 - repo: https://github.com/charliermarsh/ruff-pre-commit
   # Ruff version.
-  rev: 'v0.0.193'
+  rev: 'v0.0.210'
   hooks:
     - id: ruff
       # Respect `exclude` and `extend-exclude` settings.
@@ -214,21 +230,14 @@ dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
 # Assume Python 3.10.
 target-version = "py310"
 
-[tool.ruff.flake8-import-conventions.aliases]
-altair = "alt"
-"matplotlib.pyplot" = "plt"
-numpy = "np"
-pandas = "pd"
-seaborn = "sns"
-
 [tool.ruff.mccabe]
 # Unlike Flake8, default to a complexity level of 10.
 max-complexity = 10
 ```
 
 As an example, the following would configure Ruff to: (1) avoid checking for line-length
-violations (`E501`); (2), always autofix, but never remove unused imports (`F401`); and (3) ignore
-import-at-top-of-file errors (`E402`) in `__init__.py` files:
+violations (`E501`); (2) never remove unused imports (`F401`); and (3) ignore import-at-top-of-file
+errors (`E402`) in `__init__.py` files:
 
 ```toml
 [tool.ruff]
@@ -238,8 +247,7 @@ select = ["E", "F"]
 # Never enforce `E501` (line length violations).
 ignore = ["E501"]
 
-# Always autofix, but never try to fix `F401` (unused imports).
-fix = true
+# Never try to fix `F401` (unused imports).
 unfixable = ["F401"]
 
 # Ignore `E402` (import violations) in all `__init__.py` files, and in `path/to/file.py`.
@@ -259,6 +267,38 @@ select = ["E", "F", "Q"]
 docstring-quotes = "double"
 ```
 
+Ruff mirrors Flake8's error code system, in which each error code consists of a one-to-three letter
+prefix, followed by three digits (e.g., `F401`). The prefix indicates that "source" of the error
+code (e.g., `F` for Pyflakes, `E` for `pycodestyle`, `ANN` for `flake8-annotations`). The set of
+enabled errors is determined by the `select` and `ignore` options, which support both the full
+error code (e.g., `F401`) and the prefix (e.g., `F`).
+
+As a special-case, Ruff also supports the `ALL` error code, which enables all error codes. Note that
+some of the `pydocstyle` error codes are conflicting (e.g., `D203` and `D211`) as they represent
+alternative docstring formats. Enabling `ALL` without further configuration may result in suboptimal
+behavior, especially for the `pydocstyle` plugin.
+
+As an alternative to `pyproject.toml`, Ruff will also respect a `ruff.toml` file, which implements
+an equivalent schema (though the `[tool.ruff]` hierarchy can be omitted). For example, the
+`pyproject.toml` described above would be represented via the following `ruff.toml`:
+
+```toml
+# Enable Pyflakes and pycodestyle rules.
+select = ["E", "F"]
+
+# Never enforce `E501` (line length violations).
+ignore = ["E501"]
+
+# Always autofix, but never try to fix `F401` (unused imports).
+fix = true
+unfixable = ["F401"]
+
+# Ignore `E402` (import violations) in all `__init__.py` files, and in `path/to/file.py`.
+[per-file-ignores]
+"__init__.py" = ["E402"]
+"path/to/file.py" = ["E402"]
+```
+
 For a full list of configurable options, see the [API reference](#reference).
 
 Some common configuration settings can be provided via the command-line:
@@ -269,6 +309,7 @@ ruff path/to/code/ --select F401 --select F403
 
 See `ruff --help` for more:
 
+<!-- Begin auto-generated cli help. -->
 ```shell
 Ruff: An extremely fast Python linter.
 
@@ -279,7 +320,7 @@ Arguments:
 
 Options:
       --config <CONFIG>
-          Path to the `pyproject.toml` file to use for configuration
+          Path to the `pyproject.toml` or `ruff.toml` file to use for configuration
   -v, --verbose
           Enable verbose logging
   -q, --quiet
@@ -292,14 +333,18 @@ Options:
           Run in watch mode by re-running whenever files change
       --fix
           Attempt to automatically fix lint errors
+      --fix-only
+          Fix any fixable lint errors, but don't report on leftover violations. Implies `--fix`
+      --diff
+          Avoid writing any fixed files back; instead, output a diff for each changed file to stdout
   -n, --no-cache
           Disable cache reads
       --select <SELECT>
-          List of error codes to enable
+          Comma-separated list of error codes to enable (or ALL, to enable all checks)
       --extend-select <EXTEND_SELECT>
           Like --select, but adds additional error codes on top of the selected ones
       --ignore <IGNORE>
-          List of error codes to ignore
+          Comma-separated list of error codes to disable
       --extend-ignore <EXTEND_IGNORE>
           Like --ignore, but adds additional error codes on top of the ignored ones
       --exclude <EXCLUDE>
@@ -313,19 +358,19 @@ Options:
       --per-file-ignores <PER_FILE_IGNORES>
           List of mappings from file pattern to code to exclude
       --format <FORMAT>
-          Output serialization format for error messages [possible values: text, json, junit, grouped, github]
+          Output serialization format for error messages [possible values: text, json, junit, grouped, github, gitlab]
+      --stdin-filename <STDIN_FILENAME>
+          The name of the file when passing it through stdin
+      --cache-dir <CACHE_DIR>
+          Path to the cache directory
       --show-source
           Show violations with source code
       --respect-gitignore
           Respect file exclusions via `.gitignore` and other standard ignore files
       --force-exclude
           Enforce exclusions, even for paths passed to Ruff directly on the command-line
-      --show-files
-          See the files Ruff will be run against with the current settings
-      --show-settings
-          See the settings Ruff will use to check a given Python file
-      --add-noqa
-          Enable automatic additions of noqa directives to failing lines
+      --update-check
+          Enable or disable automatic update checks
       --dummy-variable-rgx <DUMMY_VARIABLE_RGX>
           Regular expression matching the name of dummy variables
       --target-version <TARGET_VERSION>
@@ -333,18 +378,23 @@ Options:
       --line-length <LINE_LENGTH>
           Set the line-length for length-associated checks and automatic formatting
       --max-complexity <MAX_COMPLEXITY>
-          Max McCabe complexity allowed for a function
-      --stdin-filename <STDIN_FILENAME>
-          The name of the file when passing it through stdin
+          Maximum McCabe complexity allowed for a given function
+      --add-noqa
+          Enable automatic additions of `noqa` directives to failing lines
+      --clean
+          Clear any caches in the current directory or any subdirectories
       --explain <EXPLAIN>
           Explain a rule
-      --cache-dir <CACHE_DIR>
-          Path to the cache directory
+      --show-files
+          See the files Ruff will be run against with the current settings
+      --show-settings
+          See the settings Ruff will use to check a given Python file
   -h, --help
           Print help information
   -V, --version
           Print version information
 ```
+<!-- End auto-generated cli help. -->
 
 ### `pyproject.toml` discovery
 
@@ -356,7 +406,7 @@ directory hierarchy is used for every individual file, with all paths in the `py
 
 There are a few exceptions to these rules:
 
-1. In locating the "closest" `pyproject.toml` file for a given path, Ruff ignore any
+1. In locating the "closest" `pyproject.toml` file for a given path, Ruff ignores any
    `pyproject.toml` files that lack a `[tool.ruff]` section.
 2. If a configuration file is passed directly via `--config`, those settings are used for across
    files. Any relative paths in that configuration file (like `exclude` globs or `src` paths) are
@@ -383,6 +433,9 @@ extend = "../pyproject.toml"
 line-length = 100
 ```
 
+All of the above rules apply equivalently to `ruff.toml` files. If Ruff detects both a `ruff.toml`
+and `pyproject.toml` file, it will defer to the `ruff.toml`.
+
 ### Python file discovery
 
 When passed a path on the command-line, Ruff will automatically discover all Python files in that
@@ -398,7 +451,7 @@ For example, `ruff /path/to/excluded/file.py` will always check `file.py`.
 ### Ignoring errors
 
 To omit a lint check entirely, add it to the "ignore" list via [`ignore`](#ignore) or
-[`extend-ignore`](#extend-ignore), either on the command-line or in your `project.toml` file.
+[`extend-ignore`](#extend-ignore), either on the command-line or in your `pyproject.toml` file.
 
 To ignore an error inline, Ruff uses a `noqa` system similar to [Flake8](https://flake8.pycqa.org/en/3.1.1/user/ignoring-errors.html).
 To ignore an individual error, add `# noqa: {code}` to the end of the line, like so:
@@ -495,13 +548,13 @@ For more, see [Pyflakes](https://pypi.org/project/pyflakes/2.5.0/) on PyPI.
 | F523 | StringDotFormatExtraPositionalArguments | '...'.format(...) has unused arguments at position(s): ... |  |
 | F524 | StringDotFormatMissingArguments | '...'.format(...) is missing argument(s) for placeholder(s): ... |  |
 | F525 | StringDotFormatMixingAutomatic | '...'.format(...) mixes automatic and manual numbering |  |
-| F541 | FStringMissingPlaceholders | f-string without any placeholders |  |
+| F541 | FStringMissingPlaceholders | f-string without any placeholders | 🛠 |
 | F601 | MultiValueRepeatedKeyLiteral | Dictionary key literal repeated |  |
 | F602 | MultiValueRepeatedKeyVariable | Dictionary key `...` repeated |  |
 | F621 | ExpressionsInStarAssignment | Too many expressions in star-unpacking assignment |  |
 | F622 | TwoStarredExpressions | Two starred expressions in assignment |  |
 | F631 | AssertTuple | Assert test is a non-empty tuple, which is always `True` |  |
-| F632 | IsLiteral | Use `==` and `!=` to compare constant literals | 🛠 |
+| F632 | IsLiteral | Use `==` to compare constant literals | 🛠 |
 | F633 | InvalidPrintSyntax | Use of `>>` is invalid with `print` function |  |
 | F634 | IfTuple | If test is a tuple, which is always `True` |  |
 | F701 | BreakOutsideLoop | `break` outside loop |  |
@@ -514,7 +567,6 @@ For more, see [Pyflakes](https://pypi.org/project/pyflakes/2.5.0/) on PyPI.
 | F821 | UndefinedName | Undefined name `...` |  |
 | F822 | UndefinedExport | Undefined name `...` in `__all__` |  |
 | F823 | UndefinedLocal | Local variable `...` referenced before assignment |  |
-| F831 | DuplicateArgumentName | Duplicate argument name in function definition |  |
 | F841 | UnusedVariable | Local variable `...` is assigned to but never used |  |
 | F842 | UnusedAnnotation | Local variable `...` is annotated but never used |  |
 | F901 | RaiseNotImplemented | `raise NotImplemented` should be `raise NotImplementedError` | 🛠 |
@@ -534,7 +586,7 @@ For more, see [pycodestyle](https://pypi.org/project/pycodestyle/2.9.1/) on PyPI
 | E714 | NotIsTest | Test for object identity should be `is not` | 🛠 |
 | E721 | TypeComparison | Do not compare types, use `isinstance()` |  |
 | E722 | DoNotUseBareExcept | Do not use bare `except` |  |
-| E731 | DoNotAssignLambda | Do not assign a lambda expression, use a def | 🛠 |
+| E731 | DoNotAssignLambda | Do not assign a `lambda` expression, use a `def` | 🛠 |
 | E741 | AmbiguousVariableName | Ambiguous variable name: `...` |  |
 | E742 | AmbiguousClassName | Ambiguous class name: `...` |  |
 | E743 | AmbiguousFunctionName | Ambiguous function name: `...` |  |
@@ -619,8 +671,8 @@ For more, see [pyupgrade](https://pypi.org/project/pyupgrade/3.2.0/) on PyPI.
 | ---- | ---- | ------- | --- |
 | UP001 | UselessMetaclassType | `__metaclass__ = type` is implied | 🛠 |
 | UP003 | TypeOfPrimitive | Use `str` instead of `type(...)` | 🛠 |
-| UP004 | UselessObjectInheritance | Class `...` inherits from object | 🛠 |
-| UP005 | DeprecatedUnittestAlias | `assertEquals` is deprecated, use `assertEqual` instead | 🛠 |
+| UP004 | UselessObjectInheritance | Class `...` inherits from `object` | 🛠 |
+| UP005 | DeprecatedUnittestAlias | `assertEquals` is deprecated, use `assertEqual` | 🛠 |
 | UP006 | UsePEP585Annotation | Use `list` instead of `List` for type annotations | 🛠 |
 | UP007 | UsePEP604Annotation | Use `X \| Y` for type annotations | 🛠 |
 | UP008 | SuperCallWithParameters | Use `super()` instead of `super(__class__, self)` | 🛠 |
@@ -633,7 +685,17 @@ For more, see [pyupgrade](https://pypi.org/project/pyupgrade/3.2.0/) on PyPI.
 | UP015 | RedundantOpenModes | Unnecessary open mode parameters | 🛠 |
 | UP016 | RemoveSixCompat | Unnecessary `six` compatibility usage | 🛠 |
 | UP017 | DatetimeTimezoneUTC | Use `datetime.UTC` alias | 🛠 |
-| UP018 | NativeLiterals | Unnecessary call to `str` and `bytes` | 🛠 |
+| UP018 | NativeLiterals | Unnecessary call to `str` | 🛠 |
+| UP019 | TypingTextStrAlias | `typing.Text` is deprecated, use `str` | 🛠 |
+| UP020 | OpenAlias | Use builtin `open` | 🛠 |
+| UP021 | ReplaceUniversalNewlines | `universal_newlines` is deprecated, use `text` | 🛠 |
+| UP022 | ReplaceStdoutStderr | Sending stdout and stderr to pipe is deprecated, use `capture_output` | 🛠 |
+| UP023 | RewriteCElementTree | `cElementTree` is deprecated, use `ElementTree` | 🛠 |
+| UP024 | OSErrorAlias | Replace aliased errors with `OSError` | 🛠 |
+| UP025 | RewriteUnicodeLiteral | Remove unicode literals from strings | 🛠 |
+| UP026 | RewriteMockImport | `mock` is deprecated, use `unittest.mock` | 🛠 |
+| UP027 | RewriteListComprehension | Replace unpacked list comprehension with a generator expression | 🛠 |
+| UP028 | RewriteYieldFrom | Replace `yield` over `for` loop with `yield from` | 🛠 |
 
 ### pep8-naming (N)
 
@@ -809,6 +871,16 @@ For more, see [flake8-errmsg](https://pypi.org/project/flake8-errmsg/0.4.0/) on
 | EM102 | FStringInException | Exception must not use an f-string literal, assign to variable first |  |
 | EM103 | DotFormatInException | Exception must not use a `.format()` string directly, assign to variable first |  |
 
+### flake8-implicit-str-concat (ISC)
+
+For more, see [flake8-implicit-str-concat](https://pypi.org/project/flake8-implicit-str-concat/0.3.0/) on PyPI.
+
+| Code | Name | Message | Fix |
+| ---- | ---- | ------- | --- |
+| ISC001 | SingleLineImplicitStringConcatenation | Implicitly concatenated string literals on one line |  |
+| ISC002 | MultiLineImplicitStringConcatenation | Implicitly concatenated string literals over continuation line |  |
+| ISC003 | ExplicitStringConcatenation | Explicitly concatenated string should be implicitly concatenated |  |
+
 ### flake8-import-conventions (ICN)
 
 | Code | Name | Message | Fix |
@@ -824,6 +896,38 @@ For more, see [flake8-print](https://pypi.org/project/flake8-print/5.0.0/) on Py
 | T201 | PrintFound | `print` found | 🛠 |
 | T203 | PPrintFound | `pprint` found | 🛠 |
 
+### flake8-pytest-style (PT)
+
+For more, see [flake8-pytest-style](https://pypi.org/project/flake8-pytest-style/1.6.0/) on PyPI.
+
+| Code | Name | Message | Fix |
+| ---- | ---- | ------- | --- |
+| PT001 | IncorrectFixtureParenthesesStyle | Use `@pytest.fixture()` over `@pytest.fixture` | 🛠 |
+| PT002 | FixturePositionalArgs | Configuration for fixture `...` specified via positional args, use kwargs |  |
+| PT003 | ExtraneousScopeFunction | `scope='function'` is implied in `@pytest.fixture()` |  |
+| PT004 | MissingFixtureNameUnderscore | Fixture `...` does not return anything, add leading underscore |  |
+| PT005 | IncorrectFixtureNameUnderscore | Fixture `...` returns a value, remove leading underscore |  |
+| PT006 | ParametrizeNamesWrongType | Wrong name(s) type in `@pytest.mark.parametrize`, expected `tuple` | 🛠 |
+| PT007 | ParametrizeValuesWrongType | Wrong values type in `@pytest.mark.parametrize` expected `list` of `tuple` |  |
+| PT008 | PatchWithLambda | Use `return_value=` instead of patching with lambda |  |
+| PT009 | UnittestAssertion | Use a regular assert instead of unittest-style '...' |  |
+| PT010 | RaisesWithoutException | set the expected exception in `pytest.raises()` |  |
+| PT011 | RaisesTooBroad | `pytest.raises(...)` is too broad, set the `match` parameter or use a more specific exception |  |
+| PT012 | RaisesWithMultipleStatements | `pytest.raises()` block should contain a single simple statement |  |
+| PT013 | IncorrectPytestImport | Found incorrect import of pytest, use simple `import pytest` instead |  |
+| PT015 | AssertAlwaysFalse | Assertion always fails, replace with `pytest.fail()` |  |
+| PT016 | FailWithoutMessage | No message passed to `pytest.fail()` |  |
+| PT017 | AssertInExcept | Found assertion on exception ... in except block, use pytest.raises() instead |  |
+| PT018 | CompositeAssertion | Assertion should be broken down into multiple parts |  |
+| PT019 | FixtureParamWithoutValue | Fixture ... without value is injected as parameter, use @pytest.mark.usefixtures instead |  |
+| PT020 | DeprecatedYieldFixture | `@pytest.yield_fixture` is deprecated, use `@pytest.fixture` |  |
+| PT021 | FixtureFinalizerCallback | Use `yield` instead of `request.addfinalizer` |  |
+| PT022 | UselessYieldFixture | No teardown in fixture ..., use `return` instead of `yield` | 🛠 |
+| PT023 | IncorrectMarkParenthesesStyle | Use `@pytest.mark....` over `@pytest.mark....()` | 🛠 |
+| PT024 | UnnecessaryAsyncioMarkOnFixture | `pytest.mark.asyncio` is unnecessary for fixtures |  |
+| PT025 | ErroneousUseFixturesOnFixture | `pytest.mark.usefixtures` has no effect on fixtures |  |
+| PT026 | UseFixturesWithoutParameters | Useless `pytest.mark.usefixtures` without parameters | 🛠 |
+
 ### flake8-quotes (Q)
 
 For more, see [flake8-quotes](https://pypi.org/project/flake8-quotes/3.3.1/) on PyPI.
@@ -857,6 +961,9 @@ For more, see [flake8-simplify](https://pypi.org/project/flake8-simplify/0.19.3/
 | Code | Name | Message | Fix |
 | ---- | ---- | ------- | --- |
 | SIM118 | KeyInDict | Use `key in dict` instead of `key in dict.keys()` | 🛠 |
+| SIM222 | OrTrue | Use `True` instead of `... or True` | 🛠 |
+| SIM223 | AndFalse | Use `False` instead of `... and False` | 🛠 |
+| SIM300 | YodaConditions | Use `left == right` instead of `right == left (Yoda-conditions)` | 🛠 |
 
 ### flake8-tidy-imports (TID)
 
@@ -864,6 +971,7 @@ For more, see [flake8-tidy-imports](https://pypi.org/project/flake8-tidy-imports
 
 | Code | Name | Message | Fix |
 | ---- | ---- | ------- | --- |
+| TID251 | BannedApi | `...` is banned: ... |  |
 | TID252 | BannedRelativeImport | Relative imports are banned |  |
 
 ### flake8-unused-arguments (ARG)
@@ -930,6 +1038,7 @@ For more, see [pygrep-hooks](https://github.com/pre-commit/pygrep-hooks) on GitH
 | PGH001 | NoEval | No builtin `eval()` allowed |  |
 | PGH002 | DeprecatedLogWarn | `warn` is deprecated in favor of `warning` |  |
 | PGH003 | BlanketTypeIgnore | Use specific error codes when ignoring type issues |  |
+| PGH004 | BlanketNOQA | Use specific error codes when using `noqa` |  |
 
 ### Pylint (PLC, PLE, PLR, PLW)
 
@@ -950,13 +1059,24 @@ For more, see [Pylint](https://pypi.org/project/pylint/2.15.7/) on PyPI.
 | PLW0120 | UselessElseOnLoop | Else clause on loop without a break statement, remove the else and de-indent all the code inside it |  |
 | PLW0602 | GlobalVariableNotAssigned | Using global for `...` but no assignment is done |  |
 
+### flake8-pie (PIE)
+
+For more, see [flake8-pie](https://pypi.org/project/flake8-pie/0.16.0/) on PyPI.
+
+| Code | Name | Message | Fix |
+| ---- | ---- | ------- | --- |
+| PIE790 | NoUnnecessaryPass | Unnecessary `pass` statement | 🛠 |
+| PIE794 | DupeClassFieldDefinitions | Class field `...` is defined multiple times | 🛠 |
+| PIE807 | PreferListBuiltin | Prefer `list()` over useless lambda | 🛠 |
+
 ### Ruff-specific rules (RUF)
 
 | Code | Name | Message | Fix |
 | ---- | ---- | ------- | --- |
 | RUF001 | AmbiguousUnicodeCharacterString | String contains ambiguous unicode character '𝐁' (did you mean 'B'?) | 🛠 |
 | RUF002 | AmbiguousUnicodeCharacterDocstring | Docstring contains ambiguous unicode character '𝐁' (did you mean 'B'?) | 🛠 |
-| RUF003 | AmbiguousUnicodeCharacterComment | Comment contains ambiguous unicode character '𝐁' (did you mean 'B'?) |  |
+| RUF003 | AmbiguousUnicodeCharacterComment | Comment contains ambiguous unicode character '𝐁' (did you mean 'B'?) | 🛠 |
+| RUF004 | KeywordArgumentBeforeStarArgument | Keyword argument `...` must come after starred arguments |  |
 | RUF100 | UnusedNOQA | Unused blanket `noqa` directive | 🛠 |
 
 <!-- End auto-generated sections. -->
@@ -1226,10 +1346,13 @@ natively, including:
 - [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/)
 - [`flake8-eradicate`](https://pypi.org/project/flake8-eradicate/)
 - [`flake8-errmsg`](https://pypi.org/project/flake8-errmsg/)
+- [`flake8-implicit-str-concat`](https://pypi.org/project/flake8-implicit-str-concat/)
 - [`flake8-import-conventions`](https://github.com/joaopalmeiro/flake8-import-conventions)
+- [`flake8-pie`](https://pypi.org/project/flake8-pie/) (3/7)
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-return`](https://pypi.org/project/flake8-return/)
+- [`flake8-simplify`](https://pypi.org/project/flake8-simplify/) (4/37)
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
 - [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/) (1/3)
 - [`isort`](https://pypi.org/project/isort/)
@@ -1237,7 +1360,7 @@ natively, including:
 - [`pep8-naming`](https://pypi.org/project/pep8-naming/)
 - [`pydocstyle`](https://pypi.org/project/pydocstyle/)
 - [`pygrep-hooks`](https://github.com/pre-commit/pygrep-hooks) (3/10)
-- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (18/33)
+- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (21/33)
 - [`yesqa`](https://github.com/asottile/yesqa)
 
 Note that, in some cases, Ruff uses different error code prefixes than would be found in the
@@ -1281,10 +1404,13 @@ Today, Ruff can be used to replace Flake8 when used with any of the following pl
 - [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/)
 - [`flake8-eradicate`](https://pypi.org/project/flake8-eradicate/)
 - [`flake8-errmsg`](https://pypi.org/project/flake8-errmsg/)
+- [`flake8-implicit-str-concat`](https://pypi.org/project/flake8-implicit-str-concat/)
 - [`flake8-import-conventions`](https://github.com/joaopalmeiro/flake8-import-conventions)
+- [`flake8-pie`](https://pypi.org/project/flake8-pie/) (3/7)
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-return`](https://pypi.org/project/flake8-return/)
+- [`flake8-simplify`](https://pypi.org/project/flake8-simplify/) (4/37)
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
 - [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/) (1/3)
 - [`mccabe`](https://pypi.org/project/mccabe/)
@@ -1294,9 +1420,9 @@ Today, Ruff can be used to replace Flake8 when used with any of the following pl
 Ruff can also replace [`isort`](https://pypi.org/project/isort/),
 [`yesqa`](https://github.com/asottile/yesqa), [`eradicate`](https://pypi.org/project/eradicate/),
 [`pygrep-hooks`](https://github.com/pre-commit/pygrep-hooks) (3/10), and a subset of the rules
-implemented in [`pyupgrade`](https://pypi.org/project/pyupgrade/) (17/33).
+implemented in [`pyupgrade`](https://pypi.org/project/pyupgrade/) (21/33).
 
-If you're looking to use Ruff, but rely on an unsupported Flake8 plugin, free to file an Issue.
+If you're looking to use Ruff, but rely on an unsupported Flake8 plugin, feel free to file an Issue.
 
 ### Do I need to install Rust to use Ruff?
 
@@ -1341,75 +1467,53 @@ src = ["src", "tests"]
 known-first-party = ["my_module1", "my_module2"]
 ```
 
+### Does Ruff support Jupyter Notebooks?
+
+Ruff is integrated into [nbQA](https://github.com/nbQA-dev/nbQA), a tool for running linters and
+code formatters over Jupyter Notebooks.
+
+After installing `ruff` and `nbqa`, you can run Ruff over a notebook like so:
+
+```shell
+> nbqa ruff Untitled.ipynb
+Untitled.ipynb:cell_1:2:5: F841 Local variable `x` is assigned to but never used
+Untitled.ipynb:cell_2:1:1: E402 Module level import not at top of file
+Untitled.ipynb:cell_2:1:8: F401 `os` imported but unused
+Found 3 error(s).
+1 potentially fixable with the --fix option.
+```
+
 ### Does Ruff support NumPy- or Google-style docstrings?
 
-Yes! To enable a specific docstring convention, start by enabling all `pydocstyle` error codes, and
-then selectively disabling based on your [preferred convention](https://www.pydocstyle.org/en/latest/error_codes.html#default-conventions).
+Yes! To enable specific docstring convention, add the following to your `pyproject.toml`:
 
-For example, if you're coming from `flake8-docstrings`, the following configuration is equivalent to
-`--docstring-convention=numpy`:
+```toml
+[tool.ruff.pydocstyle]
+convention = "google"  # Accepts: "google", "numpy", or "pep257".
+```
+
+For example, if you're coming from `flake8-docstrings`, and your originating configuration uses
+`--docstring-convention=numpy`, you'd instead set `convention = "numpy"` in your `pyproject.toml`,
+as above.
+
+Alongside `convention`, you'll want to explicitly enable the `D` error code class, like so:
 
 ```toml
 [tool.ruff]
-extend-select = ["D"]
-extend-ignore = [
-    "D107",
-    "D203",
-    "D212",
-    "D213",
-    "D402",
-    "D413",
-    "D415",
-    "D416",
-    "D417",
+select = [
+    "D",
 ]
+
+[tool.ruff.pydocstyle]
+convention = "google"
 ```
 
-Similarly, the following is equivalent to `--docstring-convention=google`:
+Setting a `convention` force-disables any rules that are incompatible with that convention, no
+matter how they're provided, which avoids accidental incompatibilities and simplifies configuration.
 
-```toml
-[tool.ruff]
-extend-select = ["D"]
-extend-ignore = [
-    "D203",
-    "D204",
-    "D213",
-    "D215",
-    "D400",
-    "D404",
-    "D406",
-    "D407",
-    "D408",
-    "D409",
-    "D413",
-]
-```
+### How can I tell what settings Ruff is using to check my code?
 
-Similarly, the following is equivalent to `--docstring-convention=pep8`:
-
-```toml
-[tool.ruff]
-extend-select = ["D"]
-extend-ignore = [
-    "D203",
-    "D212",
-    "D213",
-    "D214",
-    "D215",
-    "D404",
-    "D405",
-    "D406",
-    "D407",
-    "D408",
-    "D409",
-    "D410",
-    "D411",
-    "D413",
-    "D415",
-    "D416",
-    "D417",
-]
-```
+Run `ruff /path/to/code.py --show-settings` to view the resolved settings for a given file.
 
 ## Development
 
@@ -1426,8 +1530,8 @@ For development, we use [nightly Rust](https://rust-lang.github.io/rustup/concep
 
 ```shell
 cargo +nightly fmt
-cargo +nightly clippy
-cargo +nightly test
+cargo +nightly clippy --fix --workspace --all-targets --all-features -- -W clippy::pedantic
+cargo +nightly test --all
 ```
 
 ## Releases
@@ -1578,7 +1682,6 @@ Summary
 
 <!-- Sections automatically generated by `cargo dev generate-options`. -->
 <!-- Begin auto-generated options sections. -->
-
 #### [`allowed-confusables`](#allowed-confusables)
 
 A list of allowed "confusable" Unicode characters to ignore when
@@ -1798,6 +1901,23 @@ fix = true
 
 ---
 
+#### [`fix-only`](#fix-only)
+
+Like `fix`, but disables reporting on leftover violation. Implies `fix`.
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+fix-only = true
+```
+
+---
+
 #### [`fixable`](#fixable)
 
 A list of check code prefixes to consider autofix-able.
@@ -1846,8 +1966,9 @@ force-exclude = true
 
 The style in which violation messages should be formatted: `"text"`
 (default), `"grouped"` (group messages by file), `"json"`
-(machine-readable), `"junit"` (machine-readable XML), or `"github"`
-(GitHub Actions annotations).
+(machine-readable), `"junit"` (machine-readable XML), `"github"`
+(GitHub Actions annotations) or `"gitlab"`
+(GitLab CI code quality report).
 
 **Default value**: `"text"`
 
@@ -1948,6 +2069,25 @@ when considering any matching files.
 
 ---
 
+#### [`required-version`](#required-version)
+
+Require a specific version of Ruff to be running (useful for unifying
+results across many environments, e.g., with a `pyproject.toml`
+file).
+
+**Default value**: `None`
+
+**Type**: `String`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+required-version = "0.0.193"
+```
+
+---
+
 #### [`respect-gitignore`](#respect-gitignore)
 
 Whether to automatically exclude files that are ignored by `.ignore`,
@@ -2090,6 +2230,24 @@ unfixable = ["F401"]
 
 ---
 
+#### [`update-check`](#update-check)
+
+Enable or disable automatic update checks (overridden by the
+`--update-check` and `--no-update-check` command-line flags).
+
+**Default value**: `true`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+update-check = false
+```
+
+---
+
 ### `flake8-annotations`
 
 #### [`allow-star-arg-any`](#allow-star-arg-any)
@@ -2252,6 +2410,157 @@ will be added to the `aliases` mapping.
 
 ---
 
+### `flake8-pytest-style`
+
+#### [`fixture-parentheses`](#fixture-parentheses)
+
+Boolean flag specifying whether `@pytest.fixture()` without parameters
+should have parentheses. If the option is set to `true` (the
+default), `@pytest.fixture()` is valid and `@pytest.fixture` is an
+error. If set to `false`, `@pytest.fixture` is valid and
+`@pytest.fixture()` is an error.
+
+**Default value**: `true`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+fixture-parentheses = true
+```
+
+---
+
+#### [`mark-parentheses`](#mark-parentheses)
+
+Boolean flag specifying whether `@pytest.mark.foo()` without parameters
+should have parentheses. If the option is set to `true` (the
+default), `@pytest.mark.foo()` is valid and `@pytest.mark.foo` is an
+error. If set to `false`, `@pytest.fixture` is valid and
+`@pytest.mark.foo()` is an error.
+
+**Default value**: `true`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+mark-parentheses = true
+```
+
+---
+
+#### [`parametrize-names-type`](#parametrize-names-type)
+
+Expected type for multiple argument names in `@pytest.mark.parametrize`.
+The following values are supported:
+* `csv` — a comma-separated list, e.g.
+  `@pytest.mark.parametrize('name1,name2', ...)`
+* `tuple` (default) — e.g. `@pytest.mark.parametrize(('name1', 'name2'),
+  ...)`
+* `list` — e.g. `@pytest.mark.parametrize(['name1', 'name2'], ...)`
+
+**Default value**: `tuple`
+
+**Type**: `ParametrizeNameType`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+parametrize-names-type = "list"
+```
+
+---
+
+#### [`parametrize-values-row-type`](#parametrize-values-row-type)
+
+Expected type for each row of values in `@pytest.mark.parametrize` in
+case of multiple parameters. The following values are supported:
+* `tuple` (default) — e.g. `@pytest.mark.parametrize(('name1', 'name2'),
+  [(1, 2), (3, 4)])`
+* `list` — e.g. `@pytest.mark.parametrize(('name1', 'name2'), [[1, 2],
+  [3, 4]])`
+
+**Default value**: `tuple`
+
+**Type**: `ParametrizeValuesRowType`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+parametrize-values-row-type = "list"
+```
+
+---
+
+#### [`parametrize-values-type`](#parametrize-values-type)
+
+Expected type for the list of values rows in `@pytest.mark.parametrize`.
+The following values are supported:
+* `tuple` — e.g. `@pytest.mark.parametrize('name', (1, 2, 3))`
+* `list` (default) — e.g. `@pytest.mark.parametrize('name', [1, 2, 3])`
+
+**Default value**: `list`
+
+**Type**: `ParametrizeValuesType`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+parametrize-values-type = "tuple"
+```
+
+---
+
+#### [`raises-extend-require-match-for`](#raises-extend-require-match-for)
+
+List of additional exception names that require a match= parameter in a
+`pytest.raises()` call. This extends the default list of exceptions
+that require a match= parameter.
+This option is useful if you want to extend the default list of
+exceptions that require a match= parameter without having to specify
+the entire list.
+Note that this option does not remove any exceptions from the default
+list.
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+raises-extend-require-match-for = ["requests.RequestException"]
+```
+
+---
+
+#### [`raises-require-match-for`](#raises-require-match-for)
+
+List of exception names that require a match= parameter in a
+`pytest.raises()` call.
+
+**Default value**: `["BaseException", "Exception", "ValueError", "OSError", "IOError", "EnvironmentError", "socket.error"]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-pytest-style]
+raises-require-match-for = ["requests.RequestException"]
+```
+
+---
+
 ### `flake8-quotes`
 
 #### [`avoid-escape`](#avoid-escape)
@@ -2333,7 +2642,7 @@ multiline-quotes = "single"
 #### [`ban-relative-imports`](#ban-relative-imports)
 
 Whether to ban all relative imports (`"all"`), or only those imports
-that extend into the parent module and beyond (`"parents"`).
+that extend into the parent module or beyond (`"parents"`).
 
 **Default value**: `"parents"`
 
@@ -2349,6 +2658,27 @@ ban-relative-imports = "all"
 
 ---
 
+#### [`banned-api`](#banned-api)
+
+Specific modules or module members that may not be imported or accessed.
+Note that this check is only meant to flag accidental uses,
+and can be circumvented via `eval` or `importlib`.
+
+**Default value**: `{}`
+
+**Type**: `HashMap<String, BannedApi>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-tidy-imports]
+[tool.ruff.flake8-tidy-imports.banned-api]
+"cgi".msg = "The cgi module is deprecated, see https://peps.python.org/pep-0594/#cgi."
+"typing.TypedDict".msg = "Use typing_extensions.TypedDict instead."
+```
+
+---
+
 ### `flake8-unused-arguments`
 
 #### [`ignore-variadic-names`](#ignore-variadic-names)
@@ -2406,6 +2736,23 @@ extra-standard-library = ["path"]
 
 ---
 
+#### [`force-single-line`](#force-single-line)
+
+Forces all from imports to appear on their own line.
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+force-single-line = true
+```
+
+---
+
 #### [`force-wrap-aliases`](#force-wrap-aliases)
 
 Force `import from` statements with multiple members and at least one
@@ -2475,6 +2822,61 @@ known-third-party = ["src"]
 
 ---
 
+#### [`order-by-type`](#order-by-type)
+
+Order imports by type, which is determined by case, in addition to
+alphabetically.
+
+**Default value**: `true`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+order-by-type = true
+```
+
+---
+
+#### [`single-line-exclusions`](#single-line-exclusions)
+
+One or more modules to exclude from the single line rule.
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+single-line-exclusions = ["os", "json"]
+```
+
+---
+
+#### [`split-on-trailing-comma`](#split-on-trailing-comma)
+
+If a comma is placed after the last member in a multi-line import, then
+the imports will never be folded into one line.
+
+See isort's [`split-on-trailing-comma`](https://pycqa.github.io/isort/docs/configuration/options.html#split-on-trailing-comma) option.
+
+**Default value**: `true`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+split-on-trailing-comma = false
+```
+
+---
+
 ### `mccabe`
 
 #### [`max-complexity`](#max-complexity)
@@ -2556,6 +2958,27 @@ staticmethod-decorators = ["staticmethod", "stcmthd"]
 
 ---
 
+### `pydocstyle`
+
+#### [`convention`](#convention)
+
+Whether to use Google-style or NumPy-style conventions or the PEP257
+defaults when analyzing docstring sections.
+
+**Default value**: `None`
+
+**Type**: `Convention`
+
+**Example usage**:
+
+```toml
+[tool.ruff.pydocstyle]
+# Use Google-style docstrings.
+convention = "google"
+```
+
+---
+
 ### `pyupgrade`
 
 #### [`keep-runtime-typing`](#keep-runtime-typing)

flake8_to_ruff/Cargo.lock

@@ -771,7 +771,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
 
 [[package]]
 name = "flake8_to_ruff"
-version = "0.0.193"
+version = "0.0.210"
 dependencies = [
  "anyhow",
  "clap",
@@ -1975,7 +1975,7 @@ dependencies = [
 
 [[package]]
 name = "ruff"
-version = "0.0.193"
+version = "0.0.210"
 dependencies = [
  "anyhow",
  "bincode",

flake8_to_ruff/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "flake8-to-ruff"
-version = "0.0.193-dev.0"
+version = "0.0.210-dev.0"
 edition = "2021"
 
 [lib]

flake8_to_ruff/examples/manim.ini

@@ -0,0 +1,43 @@
+[flake8]
+# Exclude the grpc generated code
+exclude = ./manim/grpc/gen/*
+max-complexity = 15
+max-line-length = 88
+statistics = True
+# Prevents some flake8-rst-docstrings errors
+rst-roles = attr,class,func,meth,mod,obj,ref,doc,exc
+rst-directives = manim, SEEALSO, seealso
+docstring-convention=numpy
+
+select = A,A00,B,B9,C4,C90,D,E,F,F,PT,RST,SIM,W
+
+                # General Compatibility
+extend-ignore = E203, W503, D202, D212, D213, D404
+
+                # Misc
+                F401, F403, F405, F841, E501, E731, E402, F811, F821,
+
+                # Plug-in: flake8-builtins
+                A001, A002, A003,
+
+                # Plug-in: flake8-bugbear
+                B006, B007, B008, B009, B010, B903, B950,
+
+                # Plug-in: flake8-simplify
+                SIM105, SIM106, SIM119,
+
+                # Plug-in: flake8-comprehensions
+                C901
+
+                # Plug-in: flake8-pytest-style
+                PT001, PT004, PT006, PT011, PT018, PT022, PT023,
+
+                # Plug-in: flake8-docstrings
+                D100, D101, D102, D103, D104, D105, D106, D107,
+                D200, D202, D204, D205, D209,
+                D301,
+                D400, D401, D402, D403, D405, D406, D407, D409, D411, D412, D414,
+
+                # Plug-in: flake8-rst-docstrings
+                RST201, RST203, RST210, RST212, RST213, RST215,
+                RST301, RST303,

flake8_to_ruff/src/converter.rs

@@ -1,14 +1,18 @@
 use std::collections::{BTreeSet, HashMap};
 
 use anyhow::Result;
-use ruff::checks_gen::CheckCodePrefix;
+use ruff::flake8_pytest_style::types::{
+    ParametrizeNameType, ParametrizeValuesRowType, ParametrizeValuesType,
+};
 use ruff::flake8_quotes::settings::Quote;
 use ruff::flake8_tidy_imports::settings::Strictness;
+use ruff::pydocstyle::settings::Convention;
+use ruff::registry_gen::CheckCodePrefix;
 use ruff::settings::options::Options;
 use ruff::settings::pyproject::Pyproject;
 use ruff::{
-    flake8_annotations, flake8_bugbear, flake8_errmsg, flake8_quotes, flake8_tidy_imports, mccabe,
-    pep8_naming,
+    flake8_annotations, flake8_bugbear, flake8_errmsg, flake8_pytest_style, flake8_quotes,
+    flake8_tidy_imports, mccabe, pep8_naming, pydocstyle,
 };
 
 use crate::black::Black;
@@ -48,6 +52,19 @@ pub fn convert(
         }
     }
 
+    // Infer plugins, if not provided.
+    let plugins = plugins.unwrap_or_else(|| {
+        let from_options = plugin::infer_plugins_from_options(flake8);
+        if !from_options.is_empty() {
+            eprintln!("Inferred plugins from settings: {from_options:#?}");
+        }
+        let from_codes = plugin::infer_plugins_from_codes(&referenced_codes);
+        if !from_codes.is_empty() {
+            eprintln!("Inferred plugins from referenced check codes: {from_codes:#?}");
+        }
+        from_options.into_iter().chain(from_codes).collect()
+    });
+
     // Check if the user has specified a `select`. If not, we'll add our own
     // default `select`, and populate it based on user plugins.
     let mut select = flake8
@@ -57,22 +74,7 @@ pub fn convert(
                 .as_ref()
                 .map(|value| BTreeSet::from_iter(parser::parse_prefix_codes(value)))
         })
-        .unwrap_or_else(|| {
-            plugin::resolve_select(
-                flake8,
-                &plugins.unwrap_or_else(|| {
-                    let from_options = plugin::infer_plugins_from_options(flake8);
-                    if !from_options.is_empty() {
-                        eprintln!("Inferred plugins from settings: {from_options:#?}");
-                    }
-                    let from_codes = plugin::infer_plugins_from_codes(&referenced_codes);
-                    if !from_codes.is_empty() {
-                        eprintln!("Inferred plugins from referenced check codes: {from_codes:#?}");
-                    }
-                    from_options.into_iter().chain(from_codes).collect()
-                }),
-            )
-        });
+        .unwrap_or_else(|| plugin::resolve_select(&plugins));
     let mut ignore = flake8
         .get("ignore")
         .and_then(|value| {
@@ -87,10 +89,12 @@ pub fn convert(
     let mut flake8_annotations = flake8_annotations::settings::Options::default();
     let mut flake8_bugbear = flake8_bugbear::settings::Options::default();
     let mut flake8_errmsg = flake8_errmsg::settings::Options::default();
+    let mut flake8_pytest_style = flake8_pytest_style::settings::Options::default();
     let mut flake8_quotes = flake8_quotes::settings::Options::default();
     let mut flake8_tidy_imports = flake8_tidy_imports::settings::Options::default();
     let mut mccabe = mccabe::settings::Options::default();
     let mut pep8_naming = pep8_naming::settings::Options::default();
+    let mut pydocstyle = pydocstyle::settings::Options::default();
     for (key, value) in flake8 {
         if let Some(value) = value {
             match key.as_str() {
@@ -162,17 +166,17 @@ pub fn convert(
                 // flake8-quotes
                 "quotes" | "inline-quotes" | "inline_quotes" => match value.trim() {
                     "'" | "single" => flake8_quotes.inline_quotes = Some(Quote::Single),
-                    "\"" | "double" => flake8_quotes.inline_quotes = Some(Quote::Single),
+                    "\"" | "double" => flake8_quotes.inline_quotes = Some(Quote::Double),
                     _ => eprintln!("Unexpected '{key}' value: {value}"),
                 },
                 "multiline-quotes" | "multiline_quotes" => match value.trim() {
                     "'" | "single" => flake8_quotes.multiline_quotes = Some(Quote::Single),
-                    "\"" | "double" => flake8_quotes.multiline_quotes = Some(Quote::Single),
+                    "\"" | "double" => flake8_quotes.multiline_quotes = Some(Quote::Double),
                     _ => eprintln!("Unexpected '{key}' value: {value}"),
                 },
                 "docstring-quotes" | "docstring_quotes" => match value.trim() {
                     "'" | "single" => flake8_quotes.docstring_quotes = Some(Quote::Single),
-                    "\"" | "double" => flake8_quotes.docstring_quotes = Some(Quote::Single),
+                    "\"" | "double" => flake8_quotes.docstring_quotes = Some(Quote::Double),
                     _ => eprintln!("Unexpected '{key}' value: {value}"),
                 },
                 "avoid-escape" | "avoid_escape" => match parser::parse_bool(value.as_ref()) {
@@ -200,9 +204,13 @@ pub fn convert(
                     _ => eprintln!("Unexpected '{key}' value: {value}"),
                 },
                 // flake8-docstrings
-                "docstring-convention" => {
-                    // No-op (handled above).
-                }
+                "docstring-convention" => match value.trim() {
+                    "google" => pydocstyle.convention = Some(Convention::Google),
+                    "numpy" => pydocstyle.convention = Some(Convention::Numpy),
+                    "pep257" => pydocstyle.convention = Some(Convention::Pep257),
+                    "all" => pydocstyle.convention = None,
+                    _ => eprintln!("Unexpected '{key}' value: {value}"),
+                },
                 // mccabe
                 "max-complexity" | "max_complexity" => match value.clone().parse::<usize>() {
                     Ok(max_complexity) => mccabe.max_complexity = Some(max_complexity),
@@ -217,6 +225,66 @@ pub fn convert(
                         Err(e) => eprintln!("Unable to parse '{key}' property: {e}"),
                     }
                 }
+                // flake8-pytest-style
+                "pytest-fixture-no-parentheses" | "pytest_fixture_no_parentheses " => {
+                    match parser::parse_bool(value.as_ref()) {
+                        Ok(bool) => flake8_pytest_style.fixture_parentheses = Some(!bool),
+                        Err(e) => eprintln!("Unable to parse '{key}' property: {e}"),
+                    }
+                }
+                "pytest-parametrize-names-type" | "pytest_parametrize_names_type" => {
+                    match value.trim() {
+                        "csv" => {
+                            flake8_pytest_style.parametrize_names_type =
+                                Some(ParametrizeNameType::CSV);
+                        }
+                        "tuple" => {
+                            flake8_pytest_style.parametrize_names_type =
+                                Some(ParametrizeNameType::Tuple);
+                        }
+                        "list" => {
+                            flake8_pytest_style.parametrize_names_type =
+                                Some(ParametrizeNameType::List);
+                        }
+                        _ => eprintln!("Unexpected '{key}' value: {value}"),
+                    }
+                }
+                "pytest-parametrize-values-type" | "pytest_parametrize_values_type" => {
+                    match value.trim() {
+                        "tuple" => {
+                            flake8_pytest_style.parametrize_values_type =
+                                Some(ParametrizeValuesType::Tuple);
+                        }
+                        "list" => {
+                            flake8_pytest_style.parametrize_values_type =
+                                Some(ParametrizeValuesType::List);
+                        }
+                        _ => eprintln!("Unexpected '{key}' value: {value}"),
+                    }
+                }
+                "pytest-parametrize-values-row-type" | "pytest_parametrize_values_row_type" => {
+                    match value.trim() {
+                        "tuple" => {
+                            flake8_pytest_style.parametrize_values_row_type =
+                                Some(ParametrizeValuesRowType::Tuple);
+                        }
+                        "list" => {
+                            flake8_pytest_style.parametrize_values_row_type =
+                                Some(ParametrizeValuesRowType::List);
+                        }
+                        _ => eprintln!("Unexpected '{key}' value: {value}"),
+                    }
+                }
+                "pytest-raises-require-match-for" | "pytest_raises_require_match_for" => {
+                    flake8_pytest_style.raises_require_match_for =
+                        Some(parser::parse_strings(value.as_ref()));
+                }
+                "pytest-mark-no-parentheses" | "pytest_mark_no_parentheses" => {
+                    match parser::parse_bool(value.as_ref()) {
+                        Ok(bool) => flake8_pytest_style.mark_parentheses = Some(!bool),
+                        Err(e) => eprintln!("Unable to parse '{key}' property: {e}"),
+                    }
+                }
                 // Unknown
                 _ => eprintln!("Skipping unsupported property: {key}"),
             }
@@ -235,6 +303,9 @@ pub fn convert(
     if flake8_errmsg != flake8_errmsg::settings::Options::default() {
         options.flake8_errmsg = Some(flake8_errmsg);
     }
+    if flake8_pytest_style != flake8_pytest_style::settings::Options::default() {
+        options.flake8_pytest_style = Some(flake8_pytest_style);
+    }
     if flake8_quotes != flake8_quotes::settings::Options::default() {
         options.flake8_quotes = Some(flake8_quotes);
     }
@@ -247,6 +318,9 @@ pub fn convert(
     if pep8_naming != pep8_naming::settings::Options::default() {
         options.pep8_naming = Some(pep8_naming);
     }
+    if pydocstyle != pydocstyle::settings::Options::default() {
+        options.pydocstyle = Some(pydocstyle);
+    }
 
     // Extract any settings from the existing `pyproject.toml`.
     if let Some(black) = black {
@@ -270,10 +344,11 @@ mod tests {
     use std::collections::HashMap;
 
     use anyhow::Result;
-    use ruff::checks_gen::CheckCodePrefix;
-    use ruff::flake8_quotes;
+    use ruff::pydocstyle::settings::Convention;
+    use ruff::registry_gen::CheckCodePrefix;
     use ruff::settings::options::Options;
     use ruff::settings::pyproject::Pyproject;
+    use ruff::{flake8_quotes, pydocstyle};
 
     use crate::converter::convert;
     use crate::plugin::Plugin;
@@ -287,6 +362,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -295,6 +371,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -302,6 +379,7 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: None,
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
                 CheckCodePrefix::E,
@@ -312,10 +390,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: None,
             flake8_tidy_imports: None,
             flake8_import_conventions: None,
@@ -323,6 +402,7 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: None,
             pyupgrade: None,
         });
         assert_eq!(actual, expected);
@@ -342,6 +422,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -350,6 +431,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -357,6 +439,7 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: Some(100),
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
                 CheckCodePrefix::E,
@@ -367,10 +450,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: None,
             flake8_tidy_imports: None,
             flake8_import_conventions: None,
@@ -378,6 +462,7 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: None,
             pyupgrade: None,
         });
         assert_eq!(actual, expected);
@@ -397,6 +482,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -405,6 +491,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -412,6 +499,7 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: Some(100),
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
                 CheckCodePrefix::E,
@@ -422,10 +510,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: None,
             flake8_tidy_imports: None,
             flake8_import_conventions: None,
@@ -433,6 +522,7 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: None,
             pyupgrade: None,
         });
         assert_eq!(actual, expected);
@@ -452,6 +542,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -460,6 +551,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -467,6 +559,7 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: None,
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
                 CheckCodePrefix::E,
@@ -477,10 +570,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: None,
             flake8_tidy_imports: None,
             flake8_import_conventions: None,
@@ -488,6 +582,7 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: None,
             pyupgrade: None,
         });
         assert_eq!(actual, expected);
@@ -507,6 +602,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -515,6 +611,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -522,6 +619,7 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: None,
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
                 CheckCodePrefix::E,
@@ -532,10 +630,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: Some(flake8_quotes::settings::Options {
                 inline_quotes: Some(flake8_quotes::settings::Quote::Single),
                 multiline_quotes: None,
@@ -548,6 +647,7 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: None,
             pyupgrade: None,
         });
         assert_eq!(actual, expected);
@@ -570,6 +670,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -578,6 +679,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -585,44 +687,10 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: None,
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
-                CheckCodePrefix::D100,
-                CheckCodePrefix::D101,
-                CheckCodePrefix::D102,
-                CheckCodePrefix::D103,
-                CheckCodePrefix::D104,
-                CheckCodePrefix::D105,
-                CheckCodePrefix::D106,
-                CheckCodePrefix::D200,
-                CheckCodePrefix::D201,
-                CheckCodePrefix::D202,
-                CheckCodePrefix::D204,
-                CheckCodePrefix::D205,
-                CheckCodePrefix::D206,
-                CheckCodePrefix::D207,
-                CheckCodePrefix::D208,
-                CheckCodePrefix::D209,
-                CheckCodePrefix::D210,
-                CheckCodePrefix::D211,
-                CheckCodePrefix::D214,
-                CheckCodePrefix::D215,
-                CheckCodePrefix::D300,
-                CheckCodePrefix::D301,
-                CheckCodePrefix::D400,
-                CheckCodePrefix::D403,
-                CheckCodePrefix::D404,
-                CheckCodePrefix::D405,
-                CheckCodePrefix::D406,
-                CheckCodePrefix::D407,
-                CheckCodePrefix::D408,
-                CheckCodePrefix::D409,
-                CheckCodePrefix::D410,
-                CheckCodePrefix::D411,
-                CheckCodePrefix::D412,
-                CheckCodePrefix::D414,
-                CheckCodePrefix::D418,
-                CheckCodePrefix::D419,
+                CheckCodePrefix::D,
                 CheckCodePrefix::E,
                 CheckCodePrefix::F,
                 CheckCodePrefix::W,
@@ -631,10 +699,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: None,
             flake8_tidy_imports: None,
             flake8_import_conventions: None,
@@ -642,6 +711,9 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: Some(pydocstyle::settings::Options {
+                convention: Some(Convention::Numpy),
+            }),
             pyupgrade: None,
         });
         assert_eq!(actual, expected);
@@ -661,6 +733,7 @@ mod tests {
         )?;
         let expected = Pyproject::new(Options {
             allowed_confusables: None,
+            cache_dir: None,
             dummy_variable_rgx: None,
             exclude: None,
             extend: None,
@@ -669,6 +742,7 @@ mod tests {
             extend_select: None,
             external: None,
             fix: None,
+            fix_only: None,
             fixable: None,
             format: None,
             force_exclude: None,
@@ -676,6 +750,7 @@ mod tests {
             ignore_init_module_imports: None,
             line_length: None,
             per_file_ignores: None,
+            required_version: None,
             respect_gitignore: None,
             select: Some(vec![
                 CheckCodePrefix::E,
@@ -687,10 +762,11 @@ mod tests {
             src: None,
             target_version: None,
             unfixable: None,
-            cache_dir: None,
+            update_check: None,
             flake8_annotations: None,
             flake8_bugbear: None,
             flake8_errmsg: None,
+            flake8_pytest_style: None,
             flake8_quotes: Some(flake8_quotes::settings::Options {
                 inline_quotes: Some(flake8_quotes::settings::Quote::Single),
                 multiline_quotes: None,
@@ -703,6 +779,7 @@ mod tests {
             isort: None,
             mccabe: None,
             pep8_naming: None,
+            pydocstyle: None,
             pyupgrade: None,
         });
         assert_eq!(actual, expected);

flake8_to_ruff/src/parser.rs

@@ -3,8 +3,8 @@ use std::str::FromStr;
 use anyhow::{bail, Result};
 use once_cell::sync::Lazy;
 use regex::Regex;
-use ruff::checks::PREFIX_REDIRECTS;
-use ruff::checks_gen::CheckCodePrefix;
+use ruff::registry::PREFIX_REDIRECTS;
+use ruff::registry_gen::CheckCodePrefix;
 use ruff::settings::types::PatternPrefixPair;
 use rustc_hash::FxHashMap;
 
@@ -201,7 +201,7 @@ pub fn collect_per_file_ignores(
 #[cfg(test)]
 mod tests {
     use anyhow::Result;
-    use ruff::checks_gen::CheckCodePrefix;
+    use ruff::registry_gen::CheckCodePrefix;
     use ruff::settings::types::PatternPrefixPair;
 
     use crate::parser::{parse_files_to_codes_mapping, parse_prefix_codes, parse_strings};

flake8_to_ruff/src/plugin.rs

@@ -3,7 +3,7 @@ use std::fmt;
 use std::str::FromStr;
 
 use anyhow::anyhow;
-use ruff::checks_gen::CheckCodePrefix;
+use ruff::registry_gen::CheckCodePrefix;
 
 #[derive(Clone, Ord, PartialOrd, Eq, PartialEq)]
 pub enum Plugin {
@@ -16,16 +16,18 @@ pub enum Plugin {
     Flake8Datetimez,
     Flake8Debugger,
     Flake8Docstrings,
-    Flake8ErrMsg,
     Flake8Eradicate,
+    Flake8ErrMsg,
+    Flake8ImplicitStrConcat,
     Flake8Print,
+    Flake8PytestStyle,
     Flake8Quotes,
     Flake8Return,
     Flake8Simplify,
     Flake8TidyImports,
     McCabe,
-    PandasVet,
     PEP8Naming,
+    PandasVet,
     Pyupgrade,
 }
 
@@ -45,7 +47,9 @@ impl FromStr for Plugin {
             "flake8-docstrings" => Ok(Plugin::Flake8Docstrings),
             "flake8-eradicate" => Ok(Plugin::Flake8Eradicate),
             "flake8-errmsg" => Ok(Plugin::Flake8ErrMsg),
+            "flake8-implicit-str-concat" => Ok(Plugin::Flake8ImplicitStrConcat),
             "flake8-print" => Ok(Plugin::Flake8Print),
+            "flake8-pytest-style" => Ok(Plugin::Flake8PytestStyle),
             "flake8-quotes" => Ok(Plugin::Flake8Quotes),
             "flake8-return" => Ok(Plugin::Flake8Return),
             "flake8-simplify" => Ok(Plugin::Flake8Simplify),
@@ -76,14 +80,16 @@ impl fmt::Debug for Plugin {
                 Plugin::Flake8Docstrings => "flake8-docstrings",
                 Plugin::Flake8Eradicate => "flake8-eradicate",
                 Plugin::Flake8ErrMsg => "flake8-errmsg",
+                Plugin::Flake8ImplicitStrConcat => "flake8-implicit-str-concat",
                 Plugin::Flake8Print => "flake8-print",
+                Plugin::Flake8PytestStyle => "flake8-pytest-style",
                 Plugin::Flake8Quotes => "flake8-quotes",
                 Plugin::Flake8Return => "flake8-return",
                 Plugin::Flake8Simplify => "flake8-simplify",
                 Plugin::Flake8TidyImports => "flake8-tidy-imports",
                 Plugin::McCabe => "mccabe",
-                Plugin::PandasVet => "pandas-vet",
                 Plugin::PEP8Naming => "pep8-naming",
+                Plugin::PandasVet => "pandas-vet",
                 Plugin::Pyupgrade => "pyupgrade",
             }
         )
@@ -91,7 +97,7 @@ impl fmt::Debug for Plugin {
 }
 
 impl Plugin {
-    pub fn default(&self) -> CheckCodePrefix {
+    pub fn prefix(&self) -> CheckCodePrefix {
         match self {
             Plugin::Flake8Annotations => CheckCodePrefix::ANN,
             Plugin::Flake8Bandit => CheckCodePrefix::S,
@@ -106,7 +112,9 @@ impl Plugin {
             // TODO(charlie): Handle rename of `E` to `ERA`.
             Plugin::Flake8Eradicate => CheckCodePrefix::ERA,
             Plugin::Flake8ErrMsg => CheckCodePrefix::EM,
+            Plugin::Flake8ImplicitStrConcat => CheckCodePrefix::ISC,
             Plugin::Flake8Print => CheckCodePrefix::T2,
+            Plugin::Flake8PytestStyle => CheckCodePrefix::PT,
             Plugin::Flake8Quotes => CheckCodePrefix::Q,
             Plugin::Flake8Return => CheckCodePrefix::RET,
             Plugin::Flake8Simplify => CheckCodePrefix::SIM,
@@ -117,52 +125,12 @@ impl Plugin {
             Plugin::Pyupgrade => CheckCodePrefix::UP,
         }
     }
-
-    pub fn select(&self, flake8: &HashMap<String, Option<String>>) -> Vec<CheckCodePrefix> {
-        match self {
-            Plugin::Flake8Annotations => vec![CheckCodePrefix::ANN],
-            Plugin::Flake8Bandit => vec![CheckCodePrefix::S],
-            Plugin::Flake8BlindExcept => vec![CheckCodePrefix::BLE],
-            Plugin::Flake8Bugbear => vec![CheckCodePrefix::B],
-            Plugin::Flake8Builtins => vec![CheckCodePrefix::A],
-            Plugin::Flake8Comprehensions => vec![CheckCodePrefix::C4],
-            Plugin::Flake8Datetimez => vec![CheckCodePrefix::DTZ],
-            Plugin::Flake8Debugger => vec![CheckCodePrefix::T1],
-            Plugin::Flake8Docstrings => {
-                // Use the user-provided docstring.
-                for key in ["docstring-convention", "docstring_convention"] {
-                    if let Some(Some(value)) = flake8.get(key) {
-                        match DocstringConvention::from_str(value) {
-                            Ok(convention) => return convention.select(),
-                            Err(e) => {
-                                eprintln!("Unexpected '{key}' value: {value} ({e}");
-                                return vec![];
-                            }
-                        }
-                    }
-                }
-                // Default to PEP8.
-                DocstringConvention::PEP8.select()
-            }
-            Plugin::Flake8Eradicate => vec![CheckCodePrefix::ERA],
-            Plugin::Flake8ErrMsg => vec![CheckCodePrefix::EM],
-            Plugin::Flake8Print => vec![CheckCodePrefix::T2],
-            Plugin::Flake8Quotes => vec![CheckCodePrefix::Q],
-            Plugin::Flake8Return => vec![CheckCodePrefix::RET],
-            Plugin::Flake8Simplify => vec![CheckCodePrefix::SIM],
-            Plugin::Flake8TidyImports => vec![CheckCodePrefix::TID],
-            Plugin::McCabe => vec![CheckCodePrefix::C9],
-            Plugin::PandasVet => vec![CheckCodePrefix::PD],
-            Plugin::PEP8Naming => vec![CheckCodePrefix::N],
-            Plugin::Pyupgrade => vec![CheckCodePrefix::UP],
-        }
-    }
 }
 
 pub enum DocstringConvention {
     All,
-    PEP8,
-    NumPy,
+    Pep257,
+    Numpy,
     Google,
 }
 
@@ -172,168 +140,14 @@ impl FromStr for DocstringConvention {
     fn from_str(string: &str) -> Result<Self, Self::Err> {
         match string {
             "all" => Ok(DocstringConvention::All),
-            "pep8" => Ok(DocstringConvention::PEP8),
-            "numpy" => Ok(DocstringConvention::NumPy),
+            "pep257" => Ok(DocstringConvention::Pep257),
+            "numpy" => Ok(DocstringConvention::Numpy),
             "google" => Ok(DocstringConvention::Google),
             _ => Err(anyhow!("Unknown docstring convention: {string}")),
         }
     }
 }
 
-impl DocstringConvention {
-    fn select(&self) -> Vec<CheckCodePrefix> {
-        match self {
-            DocstringConvention::All => vec![CheckCodePrefix::D],
-            DocstringConvention::PEP8 => vec![
-                // All errors except D203, D212, D213, D214, D215, D404, D405, D406, D407, D408,
-                // D409, D410, D411, D413, D415, D416 and D417.
-                CheckCodePrefix::D100,
-                CheckCodePrefix::D101,
-                CheckCodePrefix::D102,
-                CheckCodePrefix::D103,
-                CheckCodePrefix::D104,
-                CheckCodePrefix::D105,
-                CheckCodePrefix::D106,
-                CheckCodePrefix::D107,
-                CheckCodePrefix::D200,
-                CheckCodePrefix::D201,
-                CheckCodePrefix::D202,
-                // CheckCodePrefix::D203,
-                CheckCodePrefix::D204,
-                CheckCodePrefix::D205,
-                CheckCodePrefix::D206,
-                CheckCodePrefix::D207,
-                CheckCodePrefix::D208,
-                CheckCodePrefix::D209,
-                CheckCodePrefix::D210,
-                CheckCodePrefix::D211,
-                // CheckCodePrefix::D212,
-                // CheckCodePrefix::D213,
-                // CheckCodePrefix::D214,
-                // CheckCodePrefix::D215,
-                CheckCodePrefix::D300,
-                CheckCodePrefix::D301,
-                CheckCodePrefix::D400,
-                CheckCodePrefix::D402,
-                CheckCodePrefix::D403,
-                // CheckCodePrefix::D404,
-                // CheckCodePrefix::D405,
-                // CheckCodePrefix::D406,
-                // CheckCodePrefix::D407,
-                // CheckCodePrefix::D408,
-                // CheckCodePrefix::D409,
-                // CheckCodePrefix::D410,
-                // CheckCodePrefix::D411,
-                CheckCodePrefix::D412,
-                // CheckCodePrefix::D413,
-                CheckCodePrefix::D414,
-                // CheckCodePrefix::D415,
-                // CheckCodePrefix::D416,
-                // CheckCodePrefix::D417,
-                CheckCodePrefix::D418,
-                CheckCodePrefix::D419,
-            ],
-            DocstringConvention::NumPy => vec![
-                // All errors except D107, D203, D212, D213, D402, D413, D415, D416, and D417.
-                CheckCodePrefix::D100,
-                CheckCodePrefix::D101,
-                CheckCodePrefix::D102,
-                CheckCodePrefix::D103,
-                CheckCodePrefix::D104,
-                CheckCodePrefix::D105,
-                CheckCodePrefix::D106,
-                // CheckCodePrefix::D107,
-                CheckCodePrefix::D200,
-                CheckCodePrefix::D201,
-                CheckCodePrefix::D202,
-                // CheckCodePrefix::D203,
-                CheckCodePrefix::D204,
-                CheckCodePrefix::D205,
-                CheckCodePrefix::D206,
-                CheckCodePrefix::D207,
-                CheckCodePrefix::D208,
-                CheckCodePrefix::D209,
-                CheckCodePrefix::D210,
-                CheckCodePrefix::D211,
-                // CheckCodePrefix::D212,
-                // CheckCodePrefix::D213,
-                CheckCodePrefix::D214,
-                CheckCodePrefix::D215,
-                CheckCodePrefix::D300,
-                CheckCodePrefix::D301,
-                CheckCodePrefix::D400,
-                // CheckCodePrefix::D402,
-                CheckCodePrefix::D403,
-                CheckCodePrefix::D404,
-                CheckCodePrefix::D405,
-                CheckCodePrefix::D406,
-                CheckCodePrefix::D407,
-                CheckCodePrefix::D408,
-                CheckCodePrefix::D409,
-                CheckCodePrefix::D410,
-                CheckCodePrefix::D411,
-                CheckCodePrefix::D412,
-                // CheckCodePrefix::D413,
-                CheckCodePrefix::D414,
-                // CheckCodePrefix::D415,
-                // CheckCodePrefix::D416,
-                // CheckCodePrefix::D417,
-                CheckCodePrefix::D418,
-                CheckCodePrefix::D419,
-            ],
-            DocstringConvention::Google => vec![
-                // All errors except D203, D204, D213, D215, D400, D401, D404, D406, D407, D408,
-                // D409 and D413.
-                CheckCodePrefix::D100,
-                CheckCodePrefix::D101,
-                CheckCodePrefix::D102,
-                CheckCodePrefix::D103,
-                CheckCodePrefix::D104,
-                CheckCodePrefix::D105,
-                CheckCodePrefix::D106,
-                CheckCodePrefix::D107,
-                CheckCodePrefix::D200,
-                CheckCodePrefix::D201,
-                CheckCodePrefix::D202,
-                // CheckCodePrefix::D203,
-                // CheckCodePrefix::D204,
-                CheckCodePrefix::D205,
-                CheckCodePrefix::D206,
-                CheckCodePrefix::D207,
-                CheckCodePrefix::D208,
-                CheckCodePrefix::D209,
-                CheckCodePrefix::D210,
-                CheckCodePrefix::D211,
-                CheckCodePrefix::D212,
-                // CheckCodePrefix::D213,
-                CheckCodePrefix::D214,
-                // CheckCodePrefix::D215,
-                CheckCodePrefix::D300,
-                CheckCodePrefix::D301,
-                // CheckCodePrefix::D400,
-                CheckCodePrefix::D402,
-                CheckCodePrefix::D403,
-                // CheckCodePrefix::D404,
-                CheckCodePrefix::D405,
-                // CheckCodePrefix::D406,
-                // CheckCodePrefix::D407,
-                // CheckCodePrefix::D408,
-                // CheckCodePrefix::D409,
-                CheckCodePrefix::D410,
-                CheckCodePrefix::D411,
-                CheckCodePrefix::D412,
-                // CheckCodePrefix::D413,
-                CheckCodePrefix::D414,
-                CheckCodePrefix::D415,
-                CheckCodePrefix::D416,
-                CheckCodePrefix::D417,
-                CheckCodePrefix::D418,
-                CheckCodePrefix::D419,
-            ],
-        }
-    }
-}
-
 /// Infer the enabled plugins based on user-provided options.
 ///
 /// For example, if the user specified a `mypy-init-return` setting, we should
@@ -389,6 +203,25 @@ pub fn infer_plugins_from_options(flake8: &HashMap<String, Option<String>>) -> V
             "eradicate-whitelist-extend" | "eradicate_whitelist_extend" => {
                 plugins.insert(Plugin::Flake8Eradicate);
             }
+            // flake8-pytest-style
+            "pytest-fixture-no-parentheses" | "pytest_fixture_no_parentheses " => {
+                plugins.insert(Plugin::Flake8PytestStyle);
+            }
+            "pytest-parametrize-names-type" | "pytest_parametrize_names_type" => {
+                plugins.insert(Plugin::Flake8PytestStyle);
+            }
+            "pytest-parametrize-values-type" | "pytest_parametrize_values_type" => {
+                plugins.insert(Plugin::Flake8PytestStyle);
+            }
+            "pytest-parametrize-values-row-type" | "pytest_parametrize_values_row_type" => {
+                plugins.insert(Plugin::Flake8PytestStyle);
+            }
+            "pytest-raises-require-match-for" | "pytest_raises_require_match_for" => {
+                plugins.insert(Plugin::Flake8PytestStyle);
+            }
+            "pytest-mark-no-parentheses" | "pytest_mark_no_parentheses" => {
+                plugins.insert(Plugin::Flake8PytestStyle);
+            }
             // flake8-quotes
             "quotes" | "inline-quotes" | "inline_quotes" => {
                 plugins.insert(Plugin::Flake8Quotes);
@@ -449,6 +282,7 @@ pub fn infer_plugins_from_codes(codes: &BTreeSet<CheckCodePrefix>) -> Vec<Plugin
         Plugin::Flake8Docstrings,
         Plugin::Flake8Eradicate,
         Plugin::Flake8ErrMsg,
+        Plugin::Flake8ImplicitStrConcat,
         Plugin::Flake8Print,
         Plugin::Flake8Quotes,
         Plugin::Flake8Return,
@@ -463,7 +297,7 @@ pub fn infer_plugins_from_codes(codes: &BTreeSet<CheckCodePrefix>) -> Vec<Plugin
             if prefix
                 .codes()
                 .iter()
-                .any(|code| plugin.default().codes().contains(code))
+                .any(|code| plugin.prefix().codes().contains(code))
             {
                 return true;
             }
@@ -474,18 +308,9 @@ pub fn infer_plugins_from_codes(codes: &BTreeSet<CheckCodePrefix>) -> Vec<Plugin
 }
 
 /// Resolve the set of enabled `CheckCodePrefix` values for the given plugins.
-pub fn resolve_select(
-    flake8: &HashMap<String, Option<String>>,
-    plugins: &[Plugin],
-) -> BTreeSet<CheckCodePrefix> {
-    // Include default Pyflakes and pycodestyle checks.
-    let mut select = BTreeSet::from([CheckCodePrefix::E, CheckCodePrefix::F, CheckCodePrefix::W]);
-
-    // Add prefix codes for every plugin.
-    for plugin in plugins {
-        select.extend(plugin.select(flake8));
-    }
-
+pub fn resolve_select(plugins: &[Plugin]) -> BTreeSet<CheckCodePrefix> {
+    let mut select = BTreeSet::from([CheckCodePrefix::F, CheckCodePrefix::E, CheckCodePrefix::W]);
+    select.extend(plugins.iter().map(Plugin::prefix));
     select
 }
 

playground/.eslintrc

@@ -0,0 +1,25 @@
+{
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint", "prettier"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:react/recommended",
+    "plugin:react/jsx-runtime",
+    "plugin:react-hooks/recommended",
+    "plugin:import/recommended",
+    "plugin:import/typescript",
+    "plugin:prettier/recommended"
+  ],
+  "rules": {
+    // Disable some recommended rules that we don't want to enforce.
+    "@typescript-eslint/no-explicit-any": "off",
+    "@typescript-eslint/no-empty-function": "off"
+  },
+  "settings": {
+    "react": {
+      "version": "detect"
+    }
+  }
+}

playground/.gitignore

@@ -0,0 +1,130 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

playground/.prettierrc.json

@@ -0,0 +1,3 @@
+{
+  "trailingComma": "all"
+}

playground/README.md

@@ -0,0 +1,14 @@
+# playground
+
+In-browser playground for Ruff. Available [https://ruff.pages.dev/](https://ruff.pages.dev/).
+
+## Getting started
+
+- To build the WASM module, run `wasm-pack build --target web --out-dir playground/src/pkg` from the
+  root directory.
+- Install TypeScript dependencies with: `npm install`.
+- Start the development server with: `npm run dev`.
+
+## Implementation
+
+Design based on [Tailwind Play](https://play.tailwindcss.com/). Themed with [`ayu`](https://github.com/dempfi/ayu).

playground/index.html

@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta
+      name="description"
+      content="An in-browser playground for Ruff, an extremely fast Python linter written in Rust."
+    />
+    <meta name="keywords" content="ruff, python, rust, webassembly, wasm" />
+    <title>Ruff Playground</title>
+    <link
+      rel="icon"
+      href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>⚡</text></svg>"
+    />
+    <link rel="stylesheet" href="https://rsms.me/inter/inter.css" />
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

playground/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "playground",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "build": "tsc && vite build",
+    "check": "npm run lint && npm run tsc",
+    "dev": "vite",
+    "fmt": "prettier --cache -w .",
+    "lint": "eslint --cache --ext .ts,.tsx src",
+    "preview": "vite preview",
+    "tsc": "tsc"
+  },
+  "dependencies": {
+    "@monaco-editor/react": "^4.4.6",
+    "classnames": "^2.3.2",
+    "lz-string": "^1.4.4",
+    "monaco-editor": "^0.34.1",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.0.26",
+    "@types/react-dom": "^18.0.9",
+    "@typescript-eslint/eslint-plugin": "^5.47.1",
+    "@typescript-eslint/parser": "^5.47.1",
+    "@vitejs/plugin-react-swc": "^3.0.0",
+    "autoprefixer": "^10.4.13",
+    "eslint": "^8.30.0",
+    "eslint-config-prettier": "^8.5.0",
+    "eslint-plugin-import": "^2.26.0",
+    "eslint-plugin-prettier": "^4.2.1",
+    "eslint-plugin-react": "^7.31.11",
+    "eslint-plugin-react-hooks": "^4.6.0",
+    "postcss": "^8.4.20",
+    "prettier": "^2.8.1",
+    "tailwindcss": "^3.2.4",
+    "typescript": "^4.9.3",
+    "vite": "^4.0.0"
+  }
+}

playground/postcss.config.cjs

@@ -0,0 +1,6 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};

playground/src/Editor/Editor.tsx

@@ -0,0 +1,151 @@
+import { useCallback, useEffect, useState } from "react";
+import { DEFAULT_PYTHON_SOURCE } from "../constants";
+import init, { check, Check, currentVersion, defaultSettings } from "../pkg";
+import { ErrorMessage } from "./ErrorMessage";
+import Header from "./Header";
+import { useTheme } from "./theme";
+import { persist, restore, stringify } from "./settings";
+import SettingsEditor from "./SettingsEditor";
+import SourceEditor from "./SourceEditor";
+import MonacoThemes from "./MonacoThemes";
+
+type Tab = "Source" | "Settings";
+
+export default function Editor() {
+  const [initialized, setInitialized] = useState<boolean>(false);
+  const [version, setVersion] = useState<string | null>(null);
+  const [tab, setTab] = useState<Tab>("Source");
+  const [edit, setEdit] = useState<number>(0);
+  const [settingsSource, setSettingsSource] = useState<string | null>(null);
+  const [pythonSource, setPythonSource] = useState<string | null>(null);
+  const [checks, setChecks] = useState<Check[]>([]);
+  const [error, setError] = useState<string | null>(null);
+  const [theme, setTheme] = useTheme();
+
+  useEffect(() => {
+    init().then(() => setInitialized(true));
+  }, []);
+
+  useEffect(() => {
+    if (!initialized || settingsSource == null || pythonSource == null) {
+      return;
+    }
+
+    let config: any;
+    let checks: Check[];
+
+    try {
+      config = JSON.parse(settingsSource);
+    } catch (e) {
+      setChecks([]);
+      setError((e as Error).message);
+      return;
+    }
+
+    try {
+      checks = check(pythonSource, config);
+    } catch (e) {
+      setError(e as string);
+      return;
+    }
+
+    setError(null);
+    setChecks(checks);
+  }, [initialized, settingsSource, pythonSource]);
+
+  useEffect(() => {
+    if (!initialized) {
+      return;
+    }
+
+    if (settingsSource == null || pythonSource == null) {
+      const payload = restore();
+      if (payload) {
+        const [settingsSource, pythonSource] = payload;
+        setSettingsSource(settingsSource);
+        setPythonSource(pythonSource);
+      } else {
+        setSettingsSource(stringify(defaultSettings()));
+        setPythonSource(DEFAULT_PYTHON_SOURCE);
+      }
+    }
+  }, [initialized, settingsSource, pythonSource]);
+
+  useEffect(() => {
+    if (!initialized) {
+      return;
+    }
+
+    setVersion(currentVersion());
+  }, [initialized]);
+
+  const handleShare = useCallback(() => {
+    if (!initialized || settingsSource == null || pythonSource == null) {
+      return;
+    }
+
+    persist(settingsSource, pythonSource);
+  }, [initialized, settingsSource, pythonSource]);
+
+  const handlePythonSourceChange = useCallback((pythonSource: string) => {
+    setEdit((edit) => edit + 1);
+    setPythonSource(pythonSource);
+  }, []);
+
+  const handleSettingsSourceChange = useCallback((settingsSource: string) => {
+    setEdit((edit) => edit + 1);
+    setSettingsSource(settingsSource);
+  }, []);
+
+  return (
+    <main
+      className={
+        "h-full w-full flex flex-auto bg-ayu-background dark:bg-ayu-background-dark"
+      }
+    >
+      <Header
+        edit={edit}
+        tab={tab}
+        theme={theme}
+        version={version}
+        onChangeTab={setTab}
+        onChangeTheme={setTheme}
+        onShare={initialized ? handleShare : undefined}
+      />
+
+      <MonacoThemes />
+
+      <div className={"mt-12 relative flex-auto"}>
+        {initialized && settingsSource != null && pythonSource != null ? (
+          <>
+            <SourceEditor
+              visible={tab === "Source"}
+              source={pythonSource}
+              theme={theme}
+              checks={checks}
+              onChange={handlePythonSourceChange}
+            />
+            <SettingsEditor
+              visible={tab === "Settings"}
+              source={settingsSource}
+              theme={theme}
+              onChange={handleSettingsSourceChange}
+            />
+          </>
+        ) : null}
+      </div>
+      {error && tab === "Source" ? (
+        <div
+          style={{
+            position: "fixed",
+            left: "10%",
+            right: "10%",
+            bottom: "10%",
+          }}
+        >
+          <ErrorMessage>{error}</ErrorMessage>
+        </div>
+      ) : null}
+    </main>
+  );
+}

playground/src/Editor/ErrorMessage.tsx

@@ -0,0 +1,26 @@
+function truncate(str: string, length: number) {
+  if (str.length > length) {
+    return str.slice(0, length) + "...";
+  } else {
+    return str;
+  }
+}
+
+export function ErrorMessage({ children }: { children: string }) {
+  return (
+    <div
+      className="bg-orange-100 border-l-4 border-orange-500 text-orange-700 p-4"
+      role="alert"
+    >
+      <p className="font-bold">Error</p>
+      <p className="block sm:inline">
+        {truncate(
+          children.startsWith("Error: ")
+            ? children.slice("Error: ".length)
+            : children,
+          120,
+        )}
+      </p>
+    </div>
+  );
+}

playground/src/Editor/Header.tsx

@@ -0,0 +1,105 @@
+import classNames from "classnames";
+import RepoButton from "./RepoButton";
+import ThemeButton from "./ThemeButton";
+import ShareButton from "./ShareButton";
+import { Theme } from "./theme";
+import VersionTag from "./VersionTag";
+
+export type Tab = "Source" | "Settings";
+
+export default function Header({
+  edit,
+  tab,
+  theme,
+  version,
+  onChangeTab,
+  onChangeTheme,
+  onShare,
+}: {
+  edit: number;
+  tab: Tab;
+  theme: Theme;
+  version: string | null;
+  onChangeTab: (tab: Tab) => void;
+  onChangeTheme: (theme: Theme) => void;
+  onShare?: () => void;
+}) {
+  return (
+    <div
+      className={classNames(
+        "w-full",
+        "flex",
+        "items-center",
+        "justify-between",
+        "flex-none",
+        "pl-5",
+        "sm:pl-6",
+        "pr-4",
+        "lg:pr-6",
+        "absolute",
+        "z-10",
+        "top-0",
+        "left-0",
+        "-mb-px",
+        "antialiased",
+        "border-b",
+        "border-gray-200",
+        "dark:border-gray-800",
+      )}
+    >
+      <div className="flex space-x-5">
+        <button
+          type="button"
+          className={classNames(
+            "relative flex py-3 text-sm leading-6 font-semibold focus:outline-none",
+            tab === "Source"
+              ? "text-ayu-accent"
+              : "text-gray-700 hover:text-gray-900 focus:text-gray-900 dark:text-gray-300 dark:hover:text-white",
+          )}
+          onClick={() => onChangeTab("Source")}
+        >
+          <span
+            className={classNames(
+              "absolute bottom-0 inset-x-0 bg-ayu-accent h-0.5 rounded-full transition-opacity duration-150",
+              tab === "Source" ? "opacity-100" : "opacity-0",
+            )}
+          />
+          Source
+        </button>
+        <button
+          type="button"
+          className={classNames(
+            "relative flex py-3 text-sm leading-6 font-semibold focus:outline-none",
+            tab === "Settings"
+              ? "text-ayu-accent"
+              : "text-gray-700 hover:text-gray-900 focus:text-gray-900 dark:text-gray-300 dark:hover:text-white",
+          )}
+          onClick={() => onChangeTab("Settings")}
+        >
+          <span
+            className={classNames(
+              "absolute bottom-0 inset-x-0 bg-ayu-accent h-0.5 rounded-full transition-opacity duration-150",
+              tab === "Settings" ? "opacity-100" : "opacity-0",
+            )}
+          />
+          Settings
+        </button>
+      </div>
+      <div className={"flex items-center min-w-0"}>
+        {version ? (
+          <div className={"hidden sm:flex items-center"}>
+            <VersionTag>v{version}</VersionTag>
+          </div>
+        ) : null}
+        <div className="hidden sm:block mx-6 lg:mx-4 w-px h-6 bg-gray-200 dark:bg-gray-700" />
+        <RepoButton />
+        <div className="hidden sm:block mx-6 lg:mx-4 w-px h-6 bg-gray-200 dark:bg-gray-700" />
+        <div className="hidden sm:block">
+          <ShareButton key={edit} onShare={onShare} />
+        </div>
+        <div className="hidden sm:block mx-6 lg:mx-4 w-px h-6 bg-gray-200 dark:bg-gray-700" />
+        <ThemeButton theme={theme} onChange={onChangeTheme} />
+      </div>
+    </div>
+  );
+}

playground/src/Editor/RepoButton.tsx

@@ -0,0 +1,27 @@
+export default function RepoButton() {
+  return (
+    <a
+      className={"hover:text-ayu-accent/70 text-ayu-accent"}
+      href={"https://github.com/charliermarsh/ruff"}
+      target={"_blank"}
+      rel={"noreferrer"}
+    >
+      <svg
+        xmlns={"http://www.w3.org/2000/svg"}
+        width={"24"}
+        height={"24"}
+        viewBox={"0 0 16 16"}
+        fill={"none"}
+      >
+        <path
+          fillRule={"evenodd"}
+          clipRule={"evenodd"}
+          d={
+            "M8 0C3.58 0 0 3.58 0 8C0 11.54 2.29 14.53 5.47 15.59C5.87 15.66 6.02 15.42 6.02 15.21C6.02 15.02 6.01 14.39 6.01 13.72C4 14.09 3.48 13.23 3.32 12.78C3.23 12.55 2.84 11.84 2.5 11.65C2.22 11.5 1.82 11.13 2.49 11.12C3.12 11.11 3.57 11.7 3.72 11.94C4.44 13.15 5.59 12.81 6.05 12.6C6.12 12.08 6.33 11.73 6.56 11.53C4.78 11.33 2.92 10.64 2.92 7.58C2.92 6.71 3.23 5.99 3.74 5.43C3.66 5.23 3.38 4.41 3.82 3.31C3.82 3.31 4.49 3.1 6.02 4.13C6.66 3.95 7.34 3.86 8.02 3.86C8.7 3.86 9.38 3.95 10.02 4.13C11.55 3.09 12.22 3.31 12.22 3.31C12.66 4.41 12.38 5.23 12.3 5.43C12.81 5.99 13.12 6.7 13.12 7.58C13.12 10.65 11.25 11.33 9.47 11.53C9.76 11.78 10.01 12.26 10.01 13.01C10.01 14.08 10 14.94 10 15.21C10 15.42 10.15 15.67 10.55 15.59C13.71 14.53 16 11.53 16 8C16 3.58 12.42 0 8 0Z"
+          }
+          fill={"currentColor"}
+        />
+      </svg>
+    </a>
+  );
+}

playground/src/Editor/SettingsEditor.tsx

@@ -0,0 +1,57 @@
+/**
+ * Editor for the settings JSON.
+ */
+
+import Editor, { useMonaco } from "@monaco-editor/react";
+import { useCallback, useEffect } from "react";
+import schema from "../../../ruff.schema.json";
+import { Theme } from "./theme";
+
+export default function SettingsEditor({
+  visible,
+  source,
+  theme,
+  onChange,
+}: {
+  visible: boolean;
+  source: string;
+  theme: Theme;
+  onChange: (source: string) => void;
+}) {
+  const monaco = useMonaco();
+
+  useEffect(() => {
+    monaco?.languages.json.jsonDefaults.setDiagnosticsOptions({
+      schemas: [
+        {
+          uri: "https://raw.githubusercontent.com/charliermarsh/ruff/main/ruff.schema.json",
+          fileMatch: ["*"],
+          schema,
+        },
+      ],
+    });
+  }, [monaco]);
+
+  const handleChange = useCallback(
+    (value: string | undefined) => {
+      onChange(value ?? "");
+    },
+    [onChange],
+  );
+  return (
+    <Editor
+      options={{
+        readOnly: false,
+        minimap: { enabled: false },
+        fontSize: 14,
+        roundedSelection: false,
+        scrollBeyondLastLine: false,
+      }}
+      wrapperProps={visible ? {} : { style: { display: "none" } }}
+      language={"json"}
+      value={source}
+      theme={theme === "light" ? "Ayu-Light" : "Ayu-Dark"}
+      onChange={handleChange}
+    />
+  );
+}

playground/src/Editor/ShareButton.tsx

@@ -0,0 +1,53 @@
+import { useEffect, useState } from "react";
+
+export default function ShareButton({ onShare }: { onShare?: () => void }) {
+  const [copied, setCopied] = useState(false);
+
+  useEffect(() => {
+    if (copied) {
+      const timeout = setTimeout(() => setCopied(false), 2000);
+      return () => clearTimeout(timeout);
+    }
+  }, [copied]);
+
+  return copied ? (
+    <button
+      type="button"
+      className="relative flex-none rounded-md text-sm font-semibold leading-6 py-1.5 px-3 cursor-auto text-ayu-accent shadow-copied dark:bg-ayu-accent/10"
+    >
+      <span
+        className="absolute inset-0 flex items-center justify-center invisible"
+        aria-hidden="true"
+      >
+        Share
+      </span>
+      <span className="" aria-hidden="false">
+        Copied!
+      </span>
+    </button>
+  ) : (
+    <button
+      type="button"
+      className="relative flex-none rounded-md text-sm font-semibold leading-6 py-1.5 px-3 enabled:hover:bg-ayu-accent/70 bg-ayu-accent text-white shadow-sm dark:shadow-highlight/20 disabled:opacity-50"
+      disabled={!onShare || copied}
+      onClick={
+        onShare
+          ? () => {
+              setCopied(true);
+              onShare();
+            }
+          : undefined
+      }
+    >
+      <span
+        className="absolute inset-0 flex items-center justify-center"
+        aria-hidden="false"
+      >
+        Share
+      </span>
+      <span className="invisible" aria-hidden="true">
+        Copied!
+      </span>
+    </button>
+  );
+}

playground/src/Editor/SourceEditor.tsx

@@ -0,0 +1,117 @@
+/**
+ * Editor for the Python source code.
+ */
+
+import Editor, { useMonaco } from "@monaco-editor/react";
+import { MarkerSeverity, MarkerTag } from "monaco-editor";
+import { useCallback, useEffect } from "react";
+import { Check } from "../pkg";
+import { Theme } from "./theme";
+
+export default function SourceEditor({
+  visible,
+  source,
+  theme,
+  checks,
+  onChange,
+}: {
+  visible: boolean;
+  source: string;
+  checks: Check[];
+  theme: Theme;
+  onChange: (pythonSource: string) => void;
+}) {
+  const monaco = useMonaco();
+
+  useEffect(() => {
+    const editor = monaco?.editor;
+    const model = editor?.getModels()[0];
+    if (!editor || !model) {
+      return;
+    }
+
+    editor.setModelMarkers(
+      model,
+      "owner",
+      checks.map((check) => ({
+        startLineNumber: check.location.row,
+        startColumn: check.location.column + 1,
+        endLineNumber: check.end_location.row,
+        endColumn: check.end_location.column + 1,
+        message: `${check.code}: ${check.message}`,
+        severity: MarkerSeverity.Error,
+        tags:
+          check.code === "F401" || check.code === "F841"
+            ? [MarkerTag.Unnecessary]
+            : [],
+      })),
+    );
+
+    const codeActionProvider = monaco?.languages.registerCodeActionProvider(
+      "python",
+      {
+        // @ts-expect-error: The type definition is wrong.
+        provideCodeActions: function (model, position) {
+          const actions = checks
+            .filter((check) => position.startLineNumber === check.location.row)
+            .filter((check) => check.fix)
+            .map((check) => ({
+              title: check.fix
+                ? `${check.code}: ${check.fix.message}` ?? `Fix ${check.code}`
+                : "Autofix",
+              id: `fix-${check.code}`,
+              kind: "quickfix",
+              edit: check.fix
+                ? {
+                    edits: [
+                      {
+                        resource: model.uri,
+                        versionId: model.getVersionId(),
+                        edit: {
+                          range: {
+                            startLineNumber: check.fix.location.row,
+                            startColumn: check.fix.location.column + 1,
+                            endLineNumber: check.fix.end_location.row,
+                            endColumn: check.fix.end_location.column + 1,
+                          },
+                          text: check.fix.content,
+                        },
+                      },
+                    ],
+                  }
+                : undefined,
+            }));
+          return { actions, dispose: () => {} };
+        },
+      },
+    );
+
+    return () => {
+      codeActionProvider?.dispose();
+    };
+  }, [checks, monaco]);
+
+  const handleChange = useCallback(
+    (value: string | undefined) => {
+      onChange(value ?? "");
+    },
+    [onChange],
+  );
+
+  return (
+    <Editor
+      options={{
+        readOnly: false,
+        minimap: { enabled: false },
+        fontSize: 14,
+        roundedSelection: false,
+        scrollBeyondLastLine: false,
+      }}
+      language={"python"}
+      wrapperProps={visible ? {} : { style: { display: "none" } }}
+      theme={theme === "light" ? "Ayu-Light" : "Ayu-Dark"}
+      value={source}
+      onChange={handleChange}
+    />
+  );
+}

playground/src/Editor/ThemeButton.tsx

@@ -0,0 +1,49 @@
+/**
+ * Button to toggle between light and dark mode themes.
+ */
+import { Theme } from "./theme";
+
+export default function ThemeButton({
+  theme,
+  onChange,
+}: {
+  theme: Theme;
+  onChange: (theme: Theme) => void;
+}) {
+  return (
+    <button
+      type="button"
+      className="ml-4 sm:ml-0 ring-1 ring-gray-900/5 shadow-sm hover:bg-gray-50 dark:ring-0 dark:bg-gray-800 dark:hover:bg-gray-700 dark:shadow-highlight/4 group focus:outline-none focus-visible:ring-2 rounded-md focus-visible:ring-ayu-accent dark:focus-visible:ring-2 dark:focus-visible:ring-gray-400"
+      onClick={() => onChange(theme === "light" ? "dark" : "light")}
+    >
+      <span className="sr-only">
+        <span className="dark:hidden">Switch to dark theme</span>
+        <span className="hidden dark:inline">Switch to light theme</span>
+      </span>
+      <svg
+        width="36"
+        height="36"
+        viewBox="-6 -6 36 36"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        className="stroke-ayu-accent fill-ayu-accent/10 group-hover:stroke-ayu-accent/80 dark:stroke-gray-400 dark:fill-gray-400/20 dark:group-hover:stroke-gray-300"
+      >
+        <g className="dark:opacity-0">
+          <path d="M15 12a3 3 0 1 1-6 0 3 3 0 0 1 6 0Z"></path>
+          <path
+            d="M12 4v.01M17.66 6.345l-.007.007M20.005 12.005h-.01M17.66 17.665l-.007-.007M12 20.01V20M6.34 17.665l.007-.007M3.995 12.005h.01M6.34 6.344l.007.007"
+            fill="none"
+          />
+        </g>
+        <g className="opacity-0 dark:opacity-100">
+          <path d="M16 12a4 4 0 1 1-8 0 4 4 0 0 1 8 0Z" />
+          <path
+            d="M12 3v1M18.66 5.345l-.828.828M21.005 12.005h-1M18.66 18.665l-.828-.828M12 21.01V20M5.34 18.666l.835-.836M2.995 12.005h1.01M5.34 5.344l.835.836"
+            fill="none"
+          />
+        </g>
+      </svg>
+    </button>
+  );
+}

playground/src/Editor/VersionTag.tsx

@@ -0,0 +1,26 @@
+import classNames from "classnames";
+import { ReactNode } from "react";
+
+export default function VersionTag({ children }: { children: ReactNode }) {
+  return (
+    <div
+      className={classNames(
+        "text-gray-500",
+        "text-xs",
+        "leading-5",
+        "font-semibold",
+        "bg-gray-400/10",
+        "rounded-full",
+        "py-1",
+        "px-3",
+        "flex",
+        "items-center",
+        "dark:bg-gray-800",
+        "dark:text-gray-400",
+        "dark:shadow-highlight/4",
+      )}
+    >
+      {children}
+    </div>
+  );
+}

playground/src/Editor/index.tsx

@@ -0,0 +1,3 @@
+import Editor from "./Editor";
+
+export default Editor;

playground/src/Editor/settings.ts

@@ -0,0 +1,50 @@
+import lzstring from "lz-string";
+
+export type Settings = { [K: string]: any };
+
+/**
+ * Stringify a settings object to JSON.
+ */
+export function stringify(settings: Settings): string {
+  return JSON.stringify(
+    settings,
+    (k, v) => {
+      if (v instanceof Map) {
+        return Object.fromEntries(v.entries());
+      } else {
+        return v;
+      }
+    },
+    2,
+  );
+}
+
+/**
+ * Persist the configuration to a URL.
+ */
+export async function persist(settingsSource: string, pythonSource: string) {
+  const hash = lzstring.compressToEncodedURIComponent(
+    settingsSource + "$$$" + pythonSource,
+  );
+  await navigator.clipboard.writeText(
+    window.location.href.split("#")[0] + "#" + hash,
+  );
+}
+
+/**
+ * Restore the configuration from a URL.
+ */
+export function restore(): [string, string] | null {
+  const value = lzstring.decompressFromEncodedURIComponent(
+    window.location.hash.slice(1),
+  );
+
+  if (value) {
+    const parts = value.split("$$$");
+    const settingsSource = parts[0];
+    const pythonSource = parts[1];
+    return [settingsSource, pythonSource];
+  } else {
+    return null;
+  }
+}

playground/src/Editor/theme.ts

@@ -0,0 +1,35 @@
+/**
+ * Light and dark mode theming.
+ */
+import { useEffect, useState } from "react";
+
+export type Theme = "dark" | "light";
+
+export function useTheme(): [Theme, (theme: Theme) => void] {
+  const [localTheme, setLocalTheme] = useState<Theme>("light");
+
+  const setTheme = (mode: Theme) => {
+    if (mode === "dark") {
+      document.body.classList.add("dark");
+    } else {
+      document.body.classList.remove("dark");
+    }
+    localStorage.setItem("theme", mode);
+    setLocalTheme(mode);
+  };
+
+  useEffect(() => {
+    const initialTheme = localStorage.getItem("theme");
+    if (initialTheme === "dark") {
+      setTheme("dark");
+    } else if (initialTheme === "light") {
+      setTheme("light");
+    } else if (window.matchMedia("(prefers-color-scheme: dark)").matches) {
+      setTheme("dark");
+    } else {
+      setTheme("light");
+    }
+  }, []);
+
+  return [localTheme, setTheme];
+}

playground/src/Editor/utils.ts

@@ -0,0 +1,7 @@
+export async function copyTextToClipboard(text: string) {
+  if ("clipboard" in navigator) {
+    return await navigator.clipboard.writeText(text);
+  } else {
+    return document.execCommand("copy", true, text);
+  }
+}

playground/src/constants.ts

@@ -0,0 +1,31 @@
+export const DEFAULT_PYTHON_SOURCE =
+  "import os\n" +
+  "\n" +
+  "# Define a function that takes an integer n and returns the nth number in the Fibonacci\n" +
+  "# sequence.\n" +
+  "def fibonacci(n):\n" +
+  '    """Compute the nth number in the Fibonacci sequence."""\n' +
+  "    x = 1\n" +
+  "    if n == 0:\n" +
+  "        return 0\n" +
+  "    elif n == 1:\n" +
+  "        return 1\n" +
+  "    else:\n" +
+  "        return fibonacci(n - 1) + fibonacci(n - 2)\n" +
+  "\n" +
+  "\n" +
+  "# Use a for loop to generate and print the first 10 numbers in the Fibonacci sequence.\n" +
+  "for i in range(10):\n" +
+  "    print(fibonacci(i))\n" +
+  "\n" +
+  "# Output:\n" +
+  "# 0\n" +
+  "# 1\n" +
+  "# 1\n" +
+  "# 2\n" +
+  "# 3\n" +
+  "# 5\n" +
+  "# 8\n" +
+  "# 13\n" +
+  "# 21\n" +
+  "# 34\n";

playground/src/index.css

@@ -0,0 +1,24 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+* {
+  box-sizing: border-box;
+}
+
+body,
+html,
+#root {
+  margin: 0;
+  height: 100%;
+  width: 100%;
+}
+
+.shadow-copied {
+  --tw-shadow: 0 0 0 1px #f07171, inset 0 0 0 1px #f07171;
+  --tw-shadow-colored: 0 0 0 1px var(--tw-shadow-color),
+    inset 0 0 0 1px var(--tw-shadow-color);
+
+  box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000),
+    var(--tw-ring-shadow, 0 0 #0000), var(--tw-shadow);
+}

playground/src/main.tsx

@@ -0,0 +1,10 @@
+import React from "react";
+import ReactDOM from "react-dom/client";
+import Editor from "./Editor";
+import "./index.css";
+
+ReactDOM.createRoot(document.getElementById("root") as HTMLElement).render(
+  <React.StrictMode>
+    <Editor />
+  </React.StrictMode>,
+);

playground/src/third-party.d.ts

@@ -0,0 +1,6 @@
+declare module "lz-string" {
+  function decompressFromEncodedURIComponent(
+    input: string | null,
+  ): string | null;
+  function compressToEncodedURIComponent(input: string | null): string;
+}

playground/src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

playground/tailwind.config.cjs

@@ -0,0 +1,22 @@
+/** @type {import('tailwindcss').Config} */
+const defaultTheme = require("tailwindcss/defaultTheme");
+
+module.exports = {
+  darkMode: "class",
+  content: ["./index.html", "./src/**/*.{js,ts,jsx,tsx}"],
+  theme: {
+    extend: {
+      colors: {
+        "ayu-accent": "#fa8d3e",
+        "ayu-background": {
+          DEFAULT: "#f8f9fa",
+          dark: "#0b0e14",
+        },
+      },
+      fontFamily: {
+        sans: ["Inter var", ...defaultTheme.fontFamily.sans],
+      },
+    },
+  },
+  plugins: [],
+};

playground/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "useDefineForClassFields": true,
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "allowJs": false,
+    "skipLibCheck": true,
+    "esModuleInterop": false,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "ESNext",
+    "moduleResolution": "Node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": ["src"],
+  "references": [{ "path": "./tsconfig.node.json" }]
+}

playground/tsconfig.node.json

@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "composite": true,
+    "module": "ESNext",
+    "moduleResolution": "Node",
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["vite.config.ts"]
+}

playground/vite.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react-swc";
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [react()],
+});

pyproject.toml

@@ -1,5 +1,19 @@
+[build-system]
+requires = ["maturin>=0.14,<0.15"]
+build-backend = "maturin"
+
 [project]
 name = "ruff"
+version = "0.0.210"
+description = "An extremely fast Python linter, written in Rust."
+authors = [
+  { name = "Charlie Marsh", email = "charlie.r.marsh@gmail.com" },
+]
+maintainers = [
+  { name = "Charlie Marsh", email = "charlie.r.marsh@gmail.com" },
+]
+requires-python = ">=3.7"
+license = { file = "LICENSE" }
 keywords = ["automation", "flake8", "pycodestyle", "pyflakes", "pylint", "clippy"]
 classifiers = [
     "Development Status :: 3 - Alpha",
@@ -17,24 +31,8 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Topic :: Software Development :: Quality Assurance",
 ]
-author = "Charlie Marsh"
-author_email = "charlie.r.marsh@gmail.com"
-description = "An extremely fast Python linter, written in Rust."
-requires-python = ">=3.7"
-
-[project.urls]
-repository = "https://github.com/charliermarsh/ruff"
-
-[build-system]
-requires = ["maturin>=0.14,<0.15"]
-build-backend = "maturin"
+urls = { repository = "https://github.com/charliermarsh/ruff-lsp" }
 
 [tool.maturin]
 bindings = "bin"
 strip = true
-
-[tool.ruff]
-
-[tool.ruff.isort]
-force-wrap-aliases = true
-combine-as-imports = true

resources/test/fixtures/flake8_bandit/S105.py

@@ -51,3 +51,12 @@ secret == "s3cr3t"
 token == "s3cr3t"
 secrete == "s3cr3t"
 password == safe == "s3cr3t"
+
+if token == "1\n2":
+    pass
+
+if token == "3\t4":
+    pass
+
+if token == "5\r6":
+    pass

resources/test/fixtures/flake8_implicit_str_concat/ISC.py

@@ -0,0 +1,36 @@
+_ = "a" "b" "c"
+
+_ = "abc" + "def"
+
+_ = "abc" \
+    "def"
+
+_ = (
+  "abc" +
+  "def"
+)
+
+_ = (
+  f"abc" +
+  "def"
+)
+
+_ = (
+  b"abc" +
+  b"def"
+)
+
+_ = (
+  "abc"
+  "def"
+)
+
+_ = (
+  f"abc"
+  "def"
+)
+
+_ = (
+  b"abc"
+  b"def"
+)

resources/test/fixtures/flake8_pie/PIE790.py

@@ -0,0 +1,120 @@
+class Foo:
+    """buzz"""
+
+    pass  # PIE790
+
+
+if foo:
+    """foo"""
+    pass  # PIE790
+
+
+def multi_statement() -> None:
+    """This is a function."""
+    pass; print("hello")
+
+
+if foo:
+    pass
+else:
+    """bar"""
+    pass  # PIE790
+
+
+while True:
+    pass
+else:
+    """bar"""
+    pass  # PIE790
+
+
+for _ in range(10):
+    pass
+else:
+    """bar"""
+    pass  # PIE790
+
+
+async for _ in range(10):
+    pass
+else:
+    """bar"""
+    pass  # PIE790
+
+
+def foo() -> None:
+    """
+    buzz
+    """
+
+    pass  # PIE790
+
+
+async def foo():
+    """
+    buzz
+    """
+
+    pass  # PIE790
+
+
+try:
+    """
+    buzz
+    """
+    pass  # PIE790
+except ValueError:
+    pass
+
+
+try:
+    bar()
+except ValueError:
+    """bar"""
+    pass  # PIE790
+
+
+for _ in range(10):
+    """buzz"""
+    pass  # PIE790
+
+async for _ in range(10):
+    """buzz"""
+    pass  # PIE790
+
+while cond:
+    """buzz"""
+    pass  # PIE790
+
+
+with bar:
+    """buzz"""
+    pass  # PIE790
+
+async with bar:
+    """buzz"""
+    pass  # PIE790
+
+
+class Foo:
+    # bar
+    pass
+
+
+if foo:
+    # foo
+    pass
+
+
+class Error(Exception):
+    pass
+
+
+try:
+    foo()
+except NetworkError:
+    pass
+
+
+def foo() -> None:
+    pass

resources/test/fixtures/flake8_pie/PIE794.py

@@ -0,0 +1,33 @@
+class Foo(BaseModel):
+    name = StringField()
+    # ....
+    name = StringField()  # PIE794
+
+    def remove(self) -> None:
+        ...
+
+
+class Foo(BaseModel):
+    name: str = StringField()
+    # ....
+    name = StringField()  # PIE794
+
+    def foo(self) -> None:
+        ...
+
+
+class User(BaseModel):
+    bar: str = StringField()
+    foo: bool = BooleanField()
+    # ...
+    bar = StringField()  # PIE794
+
+
+class User(BaseModel):
+    @property
+    def buzz(self) -> str:
+        ...
+
+    @buzz.setter
+    def buzz(self, value: str | int) -> None:
+        ...

resources/test/fixtures/flake8_pie/PIE807.py

@@ -0,0 +1,20 @@
+@dataclass
+class Foo:
+    foo: List[str] = field(default_factory=lambda: [])  # PIE807
+
+
+class FooTable(BaseTable):
+    bar = fields.ListField(default=lambda: [])  # PIE807
+
+
+class FooTable(BaseTable):
+    bar = fields.ListField(lambda: [])  # PIE807
+
+
+@dataclass
+class Foo:
+    foo: List[str] = field(default_factory=list)
+
+
+class FooTable(BaseTable):
+    bar = fields.ListField(list)

resources/test/fixtures/flake8_pytest_style/PT001.py

@@ -0,0 +1,78 @@
+import pytest
+from pytest import fixture
+from pytest import fixture as aliased
+
+
+# `import pytest`
+
+
+@pytest.fixture
+def no_parentheses():
+    return 42
+
+
+@pytest.fixture()
+def parentheses_no_params():
+    return 42
+
+
+@pytest.fixture(scope="module")
+def parentheses_with_params():
+    return 42
+
+
+@pytest.fixture(
+
+)
+def parentheses_no_params_multiline():
+    return 42
+
+
+# `from pytest import fixture`
+
+
+@fixture
+def imported_from_no_parentheses():
+    return 42
+
+
+@fixture()
+def imported_from_parentheses_no_params():
+    return 42
+
+
+@fixture(scope="module")
+def imported_from_parentheses_with_params():
+    return 42
+
+
+@fixture(
+
+)
+def imported_from_parentheses_no_params_multiline():
+    return 42
+
+
+# `from pytest import fixture as aliased`
+
+
+@aliased
+def aliased_no_parentheses():
+    return 42
+
+
+@aliased()
+def aliased_parentheses_no_params():
+    return 42
+
+
+@aliased(scope="module")
+def aliased_parentheses_with_params():
+    return 42
+
+
+@aliased(
+
+)
+def aliased_parentheses_no_params_multiline():
+    return 42

resources/test/fixtures/flake8_pytest_style/PT002.py

@@ -0,0 +1,21 @@
+import pytest
+
+
+@pytest.fixture()
+def my_fixture():  # OK no args
+    return 0
+
+
+@pytest.fixture(scope="module")
+def my_fixture():  # OK only kwargs
+    return 0
+
+
+@pytest.fixture("module")
+def my_fixture():  # Error only args
+    return 0
+
+
+@pytest.fixture("module", autouse=True)
+def my_fixture():  # Error mixed
+    return 0

resources/test/fixtures/flake8_pytest_style/PT003.py

@@ -0,0 +1,16 @@
+import pytest
+
+
+@pytest.fixture()
+def ok_no_scope():
+    ...
+
+
+@pytest.fixture(scope="module")
+def ok_other_scope():
+    ...
+
+
+@pytest.fixture(scope="function")
+def error():
+    ...

resources/test/fixtures/flake8_pytest_style/PT004.py

@@ -0,0 +1,58 @@
+import abc
+from abc import abstractmethod
+
+import pytest
+
+
+@pytest.fixture()
+def _patch_something(mocker):  # OK simple
+    mocker.patch("some.thing")
+
+
+@pytest.fixture()
+def _patch_something(mocker):  # OK with return
+    if something:
+        return
+    mocker.patch("some.thing")
+
+
+@pytest.fixture()
+def _activate_context():  # OK with yield
+    with context:
+        yield
+
+
+class BaseTest:
+    @pytest.fixture()
+    @abc.abstractmethod
+    def my_fixture():  # OK abstract with import abc
+        raise NotImplementedError
+
+
+class BaseTest:
+    @pytest.fixture()
+    @abstractmethod
+    def my_fixture():  # OK abstract with from import
+        raise NotImplementedError
+
+
+@pytest.fixture()
+def my_fixture():  # OK ignoring yield from
+    yield from some_generator()
+
+
+
+@pytest.fixture()
+def my_fixture():  # OK ignoring yield value
+    yield 1
+
+
+@pytest.fixture()
+def patch_something(mocker):  # Error simple
+    mocker.patch("some.thing")
+
+
+@pytest.fixture()
+def activate_context():  # Error with yield
+    with context:
+        yield

resources/test/fixtures/flake8_pytest_style/PT005.py

@@ -0,0 +1,57 @@
+import abc
+from abc import abstractmethod
+
+import pytest
+
+
+@pytest.fixture()
+def my_fixture(mocker):  # OK with return
+    return 0
+
+
+@pytest.fixture()
+def activate_context():  # OK with yield
+    with get_context() as context:
+        yield context
+
+
+@pytest.fixture()
+def _any_fixture(mocker):  # Ok nested function
+    def nested_function():
+        return 1
+
+    mocker.patch("...", nested_function)
+
+
+class BaseTest:
+    @pytest.fixture()
+    @abc.abstractmethod
+    def _my_fixture():  # OK abstract with import abc
+        return NotImplemented
+
+
+class BaseTest:
+    @pytest.fixture()
+    @abstractmethod
+    def _my_fixture():  # OK abstract with from import
+        return NotImplemented
+
+
+@pytest.fixture()
+def _my_fixture(mocker):  # Error with return
+    return 0
+
+
+@pytest.fixture()
+def _activate_context():  # Error with yield
+    with get_context() as context:
+        yield context
+
+
+@pytest.fixture()
+def _activate_context():  # Error with conditional yield from
+    if some_condition:
+        with get_context() as context:
+            yield context
+    else:
+        yield from other_context()

resources/test/fixtures/flake8_pytest_style/PT006.py

@@ -0,0 +1,51 @@
+import pytest
+
+
+@pytest.mark.parametrize("param", [1, 2, 3])
+def test_always_ok(param):
+    ...
+
+
+@pytest.mark.parametrize("param1,param2", [(1, 2), (3, 4)])
+def test_csv(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize("   param1,   ,    param2   , ", [(1, 2), (3, 4)])
+def test_csv_with_whitespace(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize("param1,param2", [(1, 2), (3, 4)])
+def test_csv_bad_quotes(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize(("param1", "param2"), [(1, 2), (3, 4)])
+def test_tuple(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize(("param1",), [1, 2, 3])
+def test_tuple_one_elem(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize(["param1", "param2"], [(1, 2), (3, 4)])
+def test_list(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize(["param1"], [1, 2, 3])
+def test_list_one_elem(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize([some_expr, another_expr], [1, 2, 3])
+def test_list_expressions(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize([some_expr, "param2"], [1, 2, 3])
+def test_list_mixed_expr_literal(param1, param2):
+    ...

resources/test/fixtures/flake8_pytest_style/PT007.py

@@ -0,0 +1,55 @@
+import pytest
+
+
+@pytest.mark.parametrize("param", (1, 2))
+def test_tuple(param):
+    ...
+
+
+@pytest.mark.parametrize(
+    ("param1", "param2"),
+    (
+        (1, 2),
+        (3, 4),
+    ),
+)
+def test_tuple_of_tuples(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize(
+    ("param1", "param2"),
+    (
+        [1, 2],
+        [3, 4],
+    ),
+)
+def test_tuple_of_lists(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize("param", [1, 2])
+def test_list(param):
+    ...
+
+
+@pytest.mark.parametrize(
+    ("param1", "param2"),
+    [
+        (1, 2),
+        (3, 4),
+    ],
+)
+def test_list_of_tuples(param1, param2):
+    ...
+
+
+@pytest.mark.parametrize(
+    ("param1", "param2"),
+    [
+        [1, 2],
+        [3, 4],
+    ],
+)
+def test_list_of_lists(param1, param2):
+    ...

resources/test/fixtures/flake8_pytest_style/PT008.py

@@ -0,0 +1,48 @@
+# OK
+
+mocker.patch("module.name", not_lambda)
+module_mocker.patch("module.name", not_lambda)
+mocker.patch.object(obj, "attr", not_lambda)
+module_mocker.patch.object(obj, "attr", not_lambda)
+
+mocker.patch("module.name", return_value=None)
+module_mocker.patch("module.name", return_value=None)
+mocker.patch.object(obj, "attr", return_value=None)
+module_mocker.patch.object(obj, "attr", return_value=None)
+
+mocker.patch("module.name", lambda x, y: x)
+module_mocker.patch("module.name", lambda x, y: x)
+mocker.patch.object(obj, "attr", lambda x, y: x)
+module_mocker.patch.object(obj, "attr", lambda x, y: x)
+
+mocker.patch("module.name", lambda *args: args)
+module_mocker.patch("module.name", lambda *args: args)
+mocker.patch.object(obj, "attr", lambda *args: args)
+module_mocker.patch.object(obj, "attr", lambda *args: args)
+
+mocker.patch("module.name", lambda **kwargs: kwargs)
+module_mocker.patch("module.name", lambda **kwargs: kwargs)
+mocker.patch.object(obj, "attr", lambda **kwargs: kwargs)
+module_mocker.patch.object(obj, "attr", lambda **kwargs: kwargs)
+
+mocker.patch("module.name", lambda x, /, y: x)
+module_mocker.patch("module.name", lambda x, /, y: x)
+mocker.patch.object(obj, "attr", lambda x, /, y: x)
+module_mocker.patch.object(obj, "attr", lambda x, /, y: x)
+
+# Error
+
+mocker.patch("module.name", lambda: None)
+module_mocker.patch("module.name", lambda: None)
+mocker.patch.object(obj, "attr", lambda: None)
+module_mocker.patch.object(obj, "attr", lambda: None)
+
+mocker.patch("module.name", lambda x, y: None)
+module_mocker.patch("module.name", lambda x, y: None)
+mocker.patch.object(obj, "attr", lambda x, y: None)
+module_mocker.patch.object(obj, "attr", lambda x, y: None)
+
+mocker.patch("module.name", lambda *args, **kwargs: None)
+module_mocker.patch("module.name", lambda *args, **kwargs: None)
+mocker.patch.object(obj, "attr", lambda *args, **kwargs: None)
+module_mocker.patch.object(obj, "attr", lambda *args, **kwargs: None)

resources/test/fixtures/flake8_pytest_style/PT009.py

@@ -0,0 +1,9 @@
+import pytest
+
+
+def test_xxx():
+    assert 1 == 1  # OK no parameters
+
+
+def test_xxx():
+    self.assertEqual(1, 1)  # Error

resources/test/fixtures/flake8_pytest_style/PT010.py

@@ -0,0 +1,11 @@
+import pytest
+
+
+def test_ok():
+    with pytest.raises():
+        pass
+
+
+def test_error():
+    with pytest.raises(UnicodeError):
+        pass

resources/test/fixtures/flake8_pytest_style/PT011.py

@@ -0,0 +1,32 @@
+import socket
+
+import pytest
+
+
+def test_ok():
+    with pytest.raises(ValueError, match="Can't divide by 0"):
+        raise ValueError("Can't divide by 0")
+
+
+def test_ok_different_error_from_config():
+    with pytest.raises(ZeroDivisionError):
+        raise ZeroDivisionError("Can't divide by 0")
+
+
+def test_error_no_argument_given():
+    with pytest.raises(ValueError):
+        raise ValueError("Can't divide 1 by 0")
+
+    with pytest.raises(socket.error):
+        raise ValueError("Can't divide 1 by 0")
+
+
+def test_error_match_is_empty():
+    with pytest.raises(ValueError, match=None):
+        raise ValueError("Can't divide 1 by 0")
+
+    with pytest.raises(ValueError, match=""):
+        raise ValueError("Can't divide 1 by 0")
+
+    with pytest.raises(ValueError, match=f""):
+        raise ValueError("Can't divide 1 by 0")

resources/test/fixtures/flake8_pytest_style/PT012.py

@@ -0,0 +1,64 @@
+import pytest
+
+
+def test_ok():
+    with pytest.raises(AttributeError):
+        [].size
+
+
+async def test_ok_trivial_with():
+    with pytest.raises(AttributeError):
+        with context_manager_under_test():
+            pass
+
+    with pytest.raises(AttributeError):
+        async with context_manager_under_test():
+            pass
+
+
+def test_ok_complex_single_call():
+    with pytest.raises(AttributeError):
+        my_func(
+            [].size,
+            [].size,
+        )
+
+
+def test_error_multiple_statements():
+    with pytest.raises(AttributeError):
+        len([])
+        [].size
+
+
+async def test_error_complex_statement():
+    with pytest.raises(AttributeError):
+        if True:
+            [].size
+
+    with pytest.raises(AttributeError):
+        for i in []:
+            [].size
+
+    with pytest.raises(AttributeError):
+        async for i in []:
+            [].size
+
+    with pytest.raises(AttributeError):
+        while True:
+            [].size
+
+    with pytest.raises(AttributeError):
+        with context_manager_under_test():
+            [].size
+
+    with pytest.raises(AttributeError):
+        async with context_manager_under_test():
+            [].size
+
+
+def test_error_try():
+    with pytest.raises(AttributeError):
+        try:
+            [].size
+        except:
+            raise

resources/test/fixtures/flake8_pytest_style/PT013.py

@@ -0,0 +1,13 @@
+# OK
+
+import pytest
+import pytest as pytest
+from notpytest import fixture
+from . import fixture
+from .pytest import fixture
+
+# Error
+
+import pytest as other_name
+from pytest import fixture
+from pytest import fixture as other_name

resources/test/fixtures/flake8_pytest_style/PT015.py

@@ -0,0 +1,25 @@
+import pytest
+
+
+def test_ok():
+    assert [0]
+
+
+def test_error():
+    assert None
+    assert False
+    assert 0
+    assert 0.0
+    assert ""
+    assert f""
+    assert []
+    assert ()
+    assert {}
+    assert list()
+    assert set()
+    assert tuple()
+    assert dict()
+    assert frozenset()
+    assert list([])
+    assert set(set())
+    assert tuple("")

resources/test/fixtures/flake8_pytest_style/PT016.py

@@ -0,0 +1,17 @@
+import pytest
+
+
+def test_xxx():
+    pytest.fail("this is a failure")  # Test OK arg
+
+
+def test_xxx():
+    pytest.fail(msg="this is a failure")  # Test OK kwarg
+
+
+def test_xxx():  # Error
+    pytest.fail()
+    pytest.fail("")
+    pytest.fail(f"")
+    pytest.fail(msg="")
+    pytest.fail(msg=f"")

resources/test/fixtures/flake8_pytest_style/PT017.py

@@ -0,0 +1,19 @@
+import pytest
+
+
+def test_ok():
+    try:
+        something()
+    except Exception as e:
+        something_else()
+
+    with pytest.raises(ZeroDivisionError) as e:
+        1 / 0
+    assert e.value.message
+
+
+def test_error():
+    try:
+        something()
+    except Exception as e:
+        assert e.message, "blah blah"

resources/test/fixtures/flake8_pytest_style/PT018.py

@@ -0,0 +1,18 @@
+import pytest
+
+
+def test_ok():
+    assert something
+    assert something or something_else
+    assert something or something_else and something_third
+    assert not (something and something_else)
+
+
+def test_error():
+    assert something and something_else
+    assert something and something_else and something_third
+    assert something and not something_else
+    assert something and (something_else or something_third)
+    assert not (something or something_else)
+    assert not (something or something_else or something_third)
+    assert not (something or something_else and something_third)

resources/test/fixtures/flake8_pytest_style/PT019.py

@@ -0,0 +1,14 @@
+def test_xxx(fixture):  # Ok good param name
+    pass
+
+
+def xxx(_param):  # Ok not a test
+    pass
+
+
+def test_xxx(_fixture):  # Error arg
+    pass
+
+
+def test_xxx(*, _fixture):  # Error kwonly
+    pass

resources/test/fixtures/flake8_pytest_style/PT020.py

@@ -0,0 +1,21 @@
+import pytest
+
+
+@pytest.fixture()
+def ok_no_parameters():
+    return 0
+
+
+@pytest.fixture
+def ok_without_parens():
+    return 0
+
+
+@pytest.yield_fixture()
+def error_without_parens():
+    return 0
+
+
+@pytest.yield_fixture
+def error_with_parens():
+    return 0

resources/test/fixtures/flake8_pytest_style/PT021.py

@@ -0,0 +1,58 @@
+import functools
+
+import pytest
+
+
+@pytest.fixture()
+def my_fixture():  # OK return
+    return 0
+
+
+@pytest.fixture()
+def my_fixture():  # OK yield
+    resource = acquire_resource()
+    yield resource
+    resource.release()
+
+
+@pytest.fixture()
+def my_fixture():  # OK other request
+    request = get_request()
+    request.addfinalizer(finalizer)
+    return request
+
+
+def create_resource(arg, request):  # OK other function
+    resource = Resource(arg)
+    request.addfinalizer(resource.release)
+    return resource
+
+
+@pytest.fixture()
+def resource_factory(request):
+    return functools.partial(create_resource, request=request)
+
+
+@pytest.fixture()
+def resource_factory(request):  # OK other function
+    def create_resource(arg) -> Resource:
+        resource = Resource(arg)
+        request.addfinalizer(resource.release)
+        return resource
+
+    return create_resource
+
+
+@pytest.fixture()
+def my_fixture(request):  # Error return
+    resource = acquire_resource()
+    request.addfinalizer(resource.release)
+    return resource
+
+
+@pytest.fixture()
+def my_fixture(request):  # Error yield
+    resource = acquire_resource()
+    request.addfinalizer(resource.release)
+    yield resource
+    resource  # prevent PT022

resources/test/fixtures/flake8_pytest_style/PT022.py

@@ -0,0 +1,17 @@
+import pytest
+
+
+@pytest.fixture()
+def ok_complex_logic():
+    if some_condition:
+        resource = acquire_resource()
+        yield resource
+        resource.release()
+        return
+    yield None
+
+
+@pytest.fixture()
+def error():
+    resource = acquire_resource()
+    yield resource

resources/test/fixtures/flake8_pytest_style/PT023.py

@@ -0,0 +1,74 @@
+import pytest
+
+
+@pytest.mark.foo(scope="module")
+def ok_with_parameters_regardless_of_config():
+    pass
+
+
+# Without parentheses
+
+
+@pytest.mark.foo
+def test_something():
+    pass
+
+
+@pytest.mark.foo
+class TestClass:
+    def test_something():
+        pass
+
+
+class TestClass:
+    @pytest.mark.foo
+    def test_something():
+        pass
+
+
+class TestClass:
+    @pytest.mark.foo
+    class TestNestedClass:
+        def test_something():
+            pass
+
+
+class TestClass:
+    class TestNestedClass:
+        @pytest.mark.foo
+        def test_something():
+            pass
+
+
+# With parentheses
+
+
+@pytest.mark.foo()
+def test_something():
+    pass
+
+
+@pytest.mark.foo()
+class TestClass:
+    def test_something():
+        pass
+
+
+class TestClass:
+    @pytest.mark.foo()
+    def test_something():
+        pass
+
+
+class TestClass:
+    @pytest.mark.foo()
+    class TestNestedClass:
+        def test_something():
+            pass
+
+
+class TestClass:
+    class TestNestedClass:
+        @pytest.mark.foo()
+        def test_something():
+            pass

resources/test/fixtures/flake8_pytest_style/PT024.py

@@ -0,0 +1,35 @@
+import pytest
+
+
+@pytest.mark.asyncio()
+async def test_something():  # Ok not fixture
+    pass
+
+
+@pytest.mark.asyncio
+async def test_something():  # Ok not fixture no parens
+    pass
+
+
+@pytest.mark.asyncio()
+@pytest.fixture()
+async def my_fixture():  # Error before
+    return 0
+
+
+@pytest.mark.asyncio
+@pytest.fixture()
+async def my_fixture():  # Error before no parens
+    return 0
+
+
+@pytest.fixture()
+@pytest.mark.asyncio()
+async def my_fixture():  # Error after
+    return 0
+
+
+@pytest.fixture()
+@pytest.mark.asyncio
+async def my_fixture():  # Error after no parens
+    return 0

resources/test/fixtures/flake8_pytest_style/PT025.py

@@ -0,0 +1,18 @@
+import pytest
+
+
+@pytest.mark.usefixtures("a")
+def test_something():  # Ok not fixture
+    pass
+
+
+@pytest.mark.usefixtures("a")
+@pytest.fixture()
+def my_fixture():  # Error before
+    return 0
+
+
+@pytest.fixture()
+@pytest.mark.usefixtures("a")
+def my_fixture():  # Error after
+    return 0

resources/test/fixtures/flake8_pytest_style/PT026.py

@@ -0,0 +1,26 @@
+import pytest
+
+
+@pytest.mark.usefixtures("a")
+def test_ok():
+    pass
+
+
+@pytest.mark.foo()
+def test_ok_another_mark_with_parens():
+    pass
+
+
+@pytest.mark.foo
+def test_ok_another_mark_no_parens():
+    pass
+
+
+@pytest.mark.usefixtures()
+def test_error_with_parens():
+    pass
+
+
+@pytest.mark.usefixtures
+def test_error_no_parens():
+    pass

resources/test/fixtures/flake8_return/RET504.py

@@ -137,6 +137,14 @@ def x():
     return a
 
 
+# Considered OK, since attribute assignments can have side effects.
+class X:
+    def x(self):
+        a = self.property
+        self.property = None
+        return a
+
+
 # Test cases for using value for assignment then returning it
 # See:https://github.com/afonasev/flake8-return/issues/47
 def resolve_from_url(self, url: str) -> dict:
@@ -238,13 +246,16 @@ def close(self):
             report(traceback.format_exc())
     return any_failed
 
+
 def global_assignment():
     global X
     X = 1
     return X
 
+
 def nonlocal_assignment():
     X = 1
+
     def inner():
         nonlocal X
         X = 1

resources/test/fixtures/flake8_simplify/SIM118.py

@@ -1,12 +1,22 @@
-key in dict.keys() # SIM118
+key in obj.keys()  # SIM118
 
-foo["bar"] in dict.keys() # SIM118
+foo["bar"] in obj.keys()  # SIM118
 
-foo() in dict.keys() # SIM118
+foo['bar'] in obj.keys()  # SIM118
 
-for key in dict.keys(): # SIM118
+foo() in obj.keys()  # SIM118
+
+for key in obj.keys():  # SIM118
     pass
 
-for key in list(dict.keys()):
+for key in list(obj.keys()):
     if some_property(key):
-        del dict[key]
+        del obj[key]
+
+[k for k in obj.keys()]  # SIM118
+
+{k for k in obj.keys()}  # SIM118
+
+{k: k for k in obj.keys()}  # SIM118
+
+(k for k in obj.keys())  # SIM118

resources/test/fixtures/flake8_simplify/SIM222.py

@@ -0,0 +1,14 @@
+if a or True:  # SIM223
+    pass
+
+if (a or b) or True:  # SIM223
+    pass
+
+if a or (b or True):  # SIM223
+    pass
+
+if a and True:
+    pass
+
+if True:
+    pass

resources/test/fixtures/flake8_simplify/SIM223.py

@@ -0,0 +1,14 @@
+if a and False:  # SIM223
+    pass
+
+if (a or b) and False:  # SIM223
+    pass
+
+if a or (b and False):  # SIM223
+    pass
+
+if a or False:
+    pass
+
+if False:
+    pass

resources/test/fixtures/flake8_simplify/SIM300.py

@@ -0,0 +1,12 @@
+# Errors
+"yoda" == compare  # SIM300
+'yoda' == compare  # SIM300
+42 == age  # SIM300
+
+# OK
+compare == "yoda"
+age == 42
+x == y
+"yoda" == compare == 1
+"yoda" == compare == someothervar
+"yoda" == "yoda"

resources/test/fixtures/flake8_tidy_imports/TID251.py

@@ -0,0 +1,33 @@
+## Banned modules ##
+import cgi
+
+from cgi import *
+
+from cgi import a, b, c
+
+# banning a module also bans any submodules
+import cgi.foo.bar
+
+from cgi.foo import bar
+
+from cgi.foo.bar import *
+
+## Banned module members ##
+
+from typing import TypedDict
+
+import typing
+
+# attribute access is checked
+typing.TypedDict
+
+typing.TypedDict.anything
+
+# function calls are checked
+typing.TypedDict()
+
+typing.TypedDict.anything()
+
+# import aliases are resolved
+import typing as totally_not_typing
+totally_not_typing.TypedDict

resources/test/fixtures/flake8_tidy_imports/TID251_false_positives.py

@@ -0,0 +1,11 @@
+# module members cannot be imported with that syntax
+import typing.TypedDict
+
+# we don't track reassignments
+import typing, other
+typing = other
+typing.TypedDict()
+
+# yet another false positive
+def foo(typing):
+    typing.TypedDict()

resources/test/fixtures/flake8_unused_arguments/ARG.py

@@ -1,4 +1,5 @@
 from abc import abstractmethod
+from typing import overload
 from typing_extensions import override
 
 
@@ -135,3 +136,20 @@ class C:
     @override
     def f(x):
         print("Hello, world!")
+
+
+###
+# Unused arguments attached to overloads (OK).
+###
+@overload
+def f(a: str, b: str) -> str:
+    ...
+
+
+@overload
+def f(a: int, b: int) -> str:
+    ...
+
+
+def f(a, b):
+    return f"{a}{b}"

resources/test/fixtures/isort/comments.py

@@ -23,3 +23,11 @@ from A import (
     b,  # Comment 10
     c,  # Comment 11
 )
+
+from D import a_long_name_to_force_multiple_lines # Comment 12
+from D import another_long_name_to_force_multiple_lines # Comment 13
+
+from E import a  # Comment 1
+
+from F import a  # Comment 1
+from F import b

resources/test/fixtures/isort/force_single_line.py

@@ -0,0 +1,18 @@
+import sys, math
+from os import path, uname
+from logging.handlers import StreamHandler, FileHandler
+
+# comment 1
+from third_party import lib1, lib2, \
+     lib3, lib7, lib5, lib6
+# comment 2
+from third_party import lib4
+
+from foo import bar  # comment 3
+from foo2 import bar2  # comment 4
+
+# comment 5
+from bar import (
+     a, # comment 6
+     b, # comment 7
+)

resources/test/fixtures/isort/inline_comments.py

@@ -0,0 +1,11 @@
+from a.prometheus.metrics import (  # type:ignore[attr-defined]
+    TERMINAL_CURRENTLY_RUNNING_TOTAL,
+)
+
+from b.prometheus.metrics import (
+    TERMINAL_CURRENTLY_RUNNING_TOTAL,  # type:ignore[attr-defined]
+)
+
+from c.prometheus.metrics import TERMINAL_CURRENTLY_RUNNING_TOTAL  # type:ignore[attr-defined]
+
+from d.prometheus.metrics import TERMINAL_CURRENTLY_RUNNING_TOTAL, OTHER_RUNNING_TOTAL  # type:ignore[attr-defined]

resources/test/fixtures/isort/line_ending_cr.py

@@ -0,0 +1 @@
+from long_module_name import member_one, member_two, member_three, member_four, member_five

resources/test/fixtures/isort/line_ending_crlf.py

@@ -0,0 +1,2 @@
+from long_module_name import member_one, member_two, member_three, member_four, member_five
+

resources/test/fixtures/isort/line_ending_lf.py

@@ -0,0 +1,2 @@
+from long_module_name import member_one, member_two, member_three, member_four, member_five
+

resources/test/fixtures/isort/magic_trailing_comma.py

@@ -0,0 +1,38 @@
+# This has a magic trailing comma, will be sorted, but not rolled into one line
+from sys import (
+    stderr,
+    argv,
+    stdout,
+    exit,
+)
+
+# No magic comma, this will be rolled into one line.
+from os import (
+    path,
+    environ,
+    execl,
+    execv
+)
+
+from glob import (
+    glob,
+    iglob,
+    escape,  # Ends with a comment, should still treat as magic trailing comma.
+)
+
+# These will be combined, but without a trailing comma.
+from foo import bar
+from foo import baz
+
+# These will be combined, _with_ a trailing comma.
+from module1 import member1
+from module1 import (
+    member2,
+    member3,
+)
+
+# These will be combined, _with_ a trailing comma.
+from module2 import member1, member2
+from module2 import (
+    member3,
+)

resources/test/fixtures/isort/natural_order.py

@@ -0,0 +1,16 @@
+import numpy1
+import numpy10
+import numpy2
+from numpy import (
+    cos,
+    int8,
+    sin,
+    int32,
+    int64,
+    tan,
+    uint8,
+    uint16,
+    int16,
+    uint32,
+    uint64,
+)

resources/test/fixtures/pydocstyle/D400.py

@@ -35,7 +35,6 @@ def f():
     ...
 
 
-
 def f():
     r"Here's a line without a period"
     ...
@@ -71,3 +70,24 @@ def f():
     Here's a line without a period,
     but here's the next line with trailing space """
     ...
+
+
+def f(rounds: list[int], number: int) -> bool:
+    """
+    :param rounds: list - rounds played.
+    :param number: int - round number.
+    :return:  bool - was the round played?
+    """
+    return number in rounds
+
+
+def f(rounds: list[int], number: int) -> bool:
+    """
+    Args:
+        rounds (list): rounds played.
+        number (int): round number.
+
+    Returns:
+        bool: was the round played?
+    """
+    return number in rounds

resources/test/fixtures/pydocstyle/D417.py

@@ -0,0 +1,115 @@
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x: the value
+            with a hanging indent
+
+    Returns:
+        the value
+    """
+    return x
+
+
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x:
+            The whole thing has a hanging indent.
+
+    Returns:
+        the value
+    """
+    return x
+
+
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x:
+            The whole thing has a hanging indent.
+
+    Returns: the value
+    """
+    return x
+
+
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x: the value def
+            ghi
+
+    Returns:
+        the value
+    """
+    return x
+
+
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x: the value
+        z: A final argument
+
+    Returns:
+        the value
+    """
+    return x
+
+
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x: the value
+        z: A final argument
+
+    Returns: the value
+    """
+    return x
+
+
+def f(x, y, z):
+    """Do something.
+
+    Args:
+        x: the value
+        z: A final argument
+    """
+    return x
+
+
+def f(x, *args, **kwargs):
+    """Do something.
+
+    Args:
+        x: the value
+        *args: variable arguments
+        **kwargs: keyword arguments
+    """
+    return x
+
+
+def f(x, *args, **kwargs):
+    """Do something.
+
+    Args:
+        *args: variable arguments
+        **kwargs: keyword arguments
+    """
+    return x
+
+
+def f(x, *args, **kwargs):
+    """Do something.
+
+    Args:
+        x: the value
+        **kwargs: keyword arguments
+    """
+    return x

resources/test/fixtures/pydocstyle/sections.py

@@ -376,7 +376,7 @@ class TestGoogle:  # noqa: D203
                 Etiam at tellus a tellus faucibus maximus. Curabitur tellus
                 mauris, semper id vehicula ac, feugiat ut tortor.
             verbose (bool):
-                If True, print out as much infromation as possible.
+                If True, print out as much information as possible.
                 If False, print out concise "one-liner" information.
 
         """

resources/test/fixtures/pyflakes/F401_7.py

@@ -1,16 +1,66 @@
 """Test: noqa directives."""
 
-from module import (
-    A,  # noqa: F401
-    B,
+# This should ignore both errors.
+from typing import (  # noqa: F401
+    List,
+    Sequence,
 )
 
-from module import (
-    A,  # noqa: F401
-    B,  # noqa: F401
+# This should ignore both errors.
+from typing import (  # noqa
+    List,
+    Sequence,
 )
 
-from module import (
-    A,
-    B,
+# This should ignore both errors.
+from typing import (
+    List,  # noqa: F401
+    Sequence,  # noqa: F401
 )
+
+# This should ignore both errors.
+from typing import (
+    List,  # noqa
+    Sequence,  # noqa
+)
+
+# This should ignore the first error.
+from typing import (
+    Mapping,  # noqa: F401
+    Union,
+)
+
+# This should ignore both errors.
+from typing import (  # noqa
+    List,
+    Sequence,
+)
+
+# This should ignore the error, but the inner noqa should be marked as unused.
+from typing import (  # noqa: F401
+    Optional,  # noqa: F401
+)
+
+# This should ignore the error, but the inner noqa should be marked as unused.
+from typing import (  # noqa
+    Optional,  # noqa: F401
+)
+
+# This should ignore the error, but mark F501 as unused.
+from typing import (  # noqa: F401
+    Dict,  # noqa: F501
+)
+
+# This should ignore the error, but mark F501 as unused.
+from typing import (  # noqa: F501
+    Tuple,  # noqa: F401
+)
+
+# This should ignore both errors.
+from typing import Any, AnyStr  # noqa: F401
+
+# This should ignore both errors.
+from typing import AsyncIterable, AsyncGenerator  # noqa
+
+# This should mark F501 as unused.
+from typing import Awaitable, AwaitableGenerator  # noqa: F501

resources/test/fixtures/pyflakes/F541.py

@@ -1,12 +1,35 @@
+# OK
 a = "abc"
 b = f"ghi{'jkl'}"
 
+# Errors
 c = f"def"
 d = f"def" + "ghi"
 e = (
     f"def" +
     "ghi"
 )
+f = (
+    f"a"
+    F"b"
+    "c"
+    rf"d"
+    fr"e"
+)
+g = f""
 
+# OK
 g = f"ghi{123:{45}}"
+
+# Error
 h = "x" "y" f"z"
+
+v = 23.234234
+
+# OK
+f"{v:0.2f}"
+f"{f'{v:0.2f}'}"
+
+# Errors
+f"{v:{f'0.2f'}}"
+f"{f''}"