From 47ad7b4500d37a67c48edc22dd9f5ed8b2a09e6c Mon Sep 17 00:00:00 2001 From: Micha Reiser Date: Fri, 19 Jan 2024 17:39:37 +0100 Subject: [PATCH 01/31] Approximate tokens len (#9546) --- crates/ruff_benchmark/benches/formatter.rs | 4 +-- .../ruff_python_index/src/comment_ranges.rs | 4 +-- crates/ruff_python_parser/src/lib.rs | 34 ++++++++++++++++--- crates/ruff_python_parser/src/parser.rs | 5 ++- crates/ruff_wasm/src/lib.rs | 4 +-- 5 files changed, 38 insertions(+), 13 deletions(-) diff --git a/crates/ruff_benchmark/benches/formatter.rs b/crates/ruff_benchmark/benches/formatter.rs index 7d415c2bde031..98c3a97f2c956 100644 --- a/crates/ruff_benchmark/benches/formatter.rs +++ b/crates/ruff_benchmark/benches/formatter.rs @@ -7,7 +7,7 @@ use ruff_benchmark::{TestCase, TestFile, TestFileDownloadError}; use ruff_python_formatter::{format_module_ast, PreviewMode, PyFormatOptions}; use ruff_python_index::CommentRangesBuilder; use ruff_python_parser::lexer::lex; -use ruff_python_parser::{parse_tokens, Mode}; +use ruff_python_parser::{allocate_tokens_vec, parse_tokens, Mode}; #[cfg(target_os = "windows")] #[global_allocator] @@ -52,7 +52,7 @@ fn benchmark_formatter(criterion: &mut Criterion) { BenchmarkId::from_parameter(case.name()), &case, |b, case| { - let mut tokens = Vec::new(); + let mut tokens = allocate_tokens_vec(case.code()); let mut comment_ranges = CommentRangesBuilder::default(); for result in lex(case.code(), Mode::Module) { diff --git a/crates/ruff_python_index/src/comment_ranges.rs b/crates/ruff_python_index/src/comment_ranges.rs index 11e6496a38b18..e9ef4c04620bf 100644 --- a/crates/ruff_python_index/src/comment_ranges.rs +++ b/crates/ruff_python_index/src/comment_ranges.rs @@ -2,7 +2,7 @@ use std::fmt::Debug; use ruff_python_ast::PySourceType; use ruff_python_parser::lexer::{lex, LexResult, LexicalError}; -use ruff_python_parser::{AsMode, Tok}; +use ruff_python_parser::{allocate_tokens_vec, AsMode, Tok}; use ruff_python_trivia::CommentRanges; use ruff_text_size::TextRange; @@ -28,7 +28,7 @@ pub fn tokens_and_ranges( source: &str, source_type: PySourceType, ) -> Result<(Vec, CommentRanges), LexicalError> { - let mut tokens = Vec::new(); + let mut tokens = allocate_tokens_vec(source); let mut comment_ranges = CommentRangesBuilder::default(); for result in lex(source, source_type.as_mode()) { diff --git a/crates/ruff_python_parser/src/lib.rs b/crates/ruff_python_parser/src/lib.rs index 0217331fe21ff..2f95c684e87d9 100644 --- a/crates/ruff_python_parser/src/lib.rs +++ b/crates/ruff_python_parser/src/lib.rs @@ -78,14 +78,14 @@ //! These tokens can be directly fed into the `ruff_python_parser` to generate an AST: //! //! ``` -//! use ruff_python_parser::{lexer::lex, Mode, parse_tokens}; +//! use ruff_python_parser::{Mode, parse_tokens, tokenize_all}; //! //! let python_source = r#" //! def is_odd(i): //! return bool(i & 1) //! "#; -//! let tokens = lex(python_source, Mode::Module); -//! let ast = parse_tokens(tokens.collect(), python_source, Mode::Module); +//! let tokens = tokenize_all(python_source, Mode::Module); +//! let ast = parse_tokens(tokens, python_source, Mode::Module); //! //! assert!(ast.is_ok()); //! ``` @@ -133,7 +133,7 @@ pub mod typing; /// Collect tokens up to and including the first error. pub fn tokenize(contents: &str, mode: Mode) -> Vec { - let mut tokens: Vec = vec![]; + let mut tokens: Vec = allocate_tokens_vec(contents); for tok in lexer::lex(contents, mode) { let is_err = tok.is_err(); tokens.push(tok); @@ -141,9 +141,35 @@ pub fn tokenize(contents: &str, mode: Mode) -> Vec { break; } } + + tokens +} + +/// Tokenizes all tokens. +/// +/// It differs from [`tokenize`] in that it tokenizes all tokens and doesn't stop +/// after the first `Err`. +pub fn tokenize_all(contents: &str, mode: Mode) -> Vec { + let mut tokens = allocate_tokens_vec(contents); + for token in lexer::lex(contents, mode) { + tokens.push(token); + } tokens } +/// Allocates a [`Vec`] with an approximated capacity to fit all tokens +/// of `contents`. +/// +/// See [#9546](https://github.com/astral-sh/ruff/pull/9546) for a more detailed explanation. +pub fn allocate_tokens_vec(contents: &str) -> Vec { + Vec::with_capacity(approximate_tokens_lower_bound(contents)) +} + +/// Approximates the number of tokens when lexing `contents`. +fn approximate_tokens_lower_bound(contents: &str) -> usize { + contents.len().saturating_mul(15) / 100 +} + /// Parse a full Python program from its tokens. pub fn parse_program_tokens( tokens: Vec, diff --git a/crates/ruff_python_parser/src/parser.rs b/crates/ruff_python_parser/src/parser.rs index e158dadfcff4d..c0f6c7d18d2cb 100644 --- a/crates/ruff_python_parser/src/parser.rs +++ b/crates/ruff_python_parser/src/parser.rs @@ -31,7 +31,7 @@ use crate::{ lexer::{self, LexicalError, LexicalErrorType}, python, token::Tok, - Mode, + tokenize_all, Mode, }; /// Parse a full Python program usually consisting of multiple lines. @@ -55,8 +55,7 @@ use crate::{ /// assert!(program.is_ok()); /// ``` pub fn parse_program(source: &str) -> Result { - let lexer = lex(source, Mode::Module); - match parse_tokens(lexer.collect(), source, Mode::Module)? { + match parse_tokens(tokenize_all(source, Mode::Module), source, Mode::Module)? { Mod::Module(m) => Ok(m), Mod::Expression(_) => unreachable!("Mode::Module doesn't return other variant"), } diff --git a/crates/ruff_wasm/src/lib.rs b/crates/ruff_wasm/src/lib.rs index 7ebfd67ca327e..f83ed36b79b45 100644 --- a/crates/ruff_wasm/src/lib.rs +++ b/crates/ruff_wasm/src/lib.rs @@ -17,7 +17,7 @@ use ruff_python_codegen::Stylist; use ruff_python_formatter::{format_module_ast, pretty_comments, PyFormatContext, QuoteStyle}; use ruff_python_index::{CommentRangesBuilder, Indexer}; use ruff_python_parser::lexer::LexResult; -use ruff_python_parser::{parse_tokens, AsMode, Mode}; +use ruff_python_parser::{parse_tokens, tokenize_all, AsMode, Mode}; use ruff_python_trivia::CommentRanges; use ruff_source_file::{Locator, SourceLocation}; use ruff_text_size::Ranged; @@ -272,7 +272,7 @@ struct ParsedModule<'a> { impl<'a> ParsedModule<'a> { fn from_source(source_code: &'a str) -> Result { - let tokens: Vec<_> = ruff_python_parser::lexer::lex(source_code, Mode::Module).collect(); + let tokens: Vec<_> = tokenize_all(source_code, Mode::Module); let mut comment_ranges = CommentRangesBuilder::default(); for (token, range) in tokens.iter().flatten() { From df617c3093f518554de675da542f25a6cab85b16 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Fri, 19 Jan 2024 11:58:31 -0500 Subject: [PATCH 02/31] [`flake8-blind-except`] Document exceptions to `blind-except` rule (#9580) Closes https://github.com/astral-sh/ruff/issues/9571. --- .../flake8_blind_except/rules/blind_except.rs | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs b/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs index 102f40be9913e..3eab03f29ab42 100644 --- a/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs +++ b/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs @@ -34,6 +34,25 @@ use crate::checkers::ast::Checker; /// ... /// ``` /// +/// Exceptions that are re-raised will _not_ be flagged, as they're expected to +/// be caught elsewhere: +/// ```python +/// try: +/// foo() +/// except BaseException: +/// raise +/// ``` +/// +/// Exceptions that are logged via `logging.exception()` or `logging.error()` +/// with `exc_info` enabled will _not_ be flagged, as this is a common pattern +/// for propagating exception traces: +/// ```python +/// try: +/// foo() +/// except BaseException: +/// logging.exception("Something went wrong") +/// ``` +/// /// ## References /// - [Python documentation: The `try` statement](https://docs.python.org/3/reference/compound_stmts.html#the-try-statement) /// - [Python documentation: Exception hierarchy](https://docs.python.org/3/library/exceptions.html#exception-hierarchy) From 866bea60a5de3c59d2537b0f3a634ae0ac9afd94 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Fri, 19 Jan 2024 12:54:39 -0500 Subject: [PATCH 03/31] Bump version to v0.1.14 (#9581) --- CHANGELOG.md | 48 +++++++++++++++++++++++++++++++ Cargo.lock | 6 ++-- README.md | 2 +- crates/ruff/Cargo.toml | 2 +- crates/ruff_linter/Cargo.toml | 2 +- crates/ruff_shrinking/Cargo.toml | 2 +- docs/integrations.md | 6 ++-- pyproject.toml | 2 +- scripts/benchmarks/pyproject.toml | 2 +- 9 files changed, 60 insertions(+), 12 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 884f73300713d..72c8adf98671d 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,5 +1,53 @@ # Changelog +## 0.1.14 + +### Preview features + +- \[`flake8-bugbear`\] Add fix for `duplicate-value` (`B033`) ([#9510](https://github.com/astral-sh/ruff/pull/9510)) +- \[`flake8-simplify`\] Implement `enumerate-for-loop` (`SIM113`) ([#7777](https://github.com/astral-sh/ruff/pull/7777)) +- \[`pygrep_hooks`\] Add fix for `deprecated-log-warn` (`PGH002`) ([#9519](https://github.com/astral-sh/ruff/pull/9519)) +- \[`pylint`\] Implement `import-private-name` (`C2701`) ([#5920](https://github.com/astral-sh/ruff/pull/5920)) +- \[`refurb`\] Implement `regex-flag-alias` with fix (`FURB167`) ([#9516](https://github.com/astral-sh/ruff/pull/9516)) +- \[`ruff`\] Add rule and fix to sort contents of `__all__` (`RUF022`) ([#9474](https://github.com/astral-sh/ruff/pull/9474)) +- \[`tryceratops`\] Add fix for `error-instead-of-exception` (`TRY400`) ([#9520](https://github.com/astral-sh/ruff/pull/9520)) + +### Rule changes + +- \[`flake8-pyi`\] Fix `PYI047` false negatives on PEP-695 type aliases ([#9566](https://github.com/astral-sh/ruff/pull/9566)) +- \[`flake8-pyi`\] Fix `PYI049` false negatives on call-based `TypedDict`s ([#9567](https://github.com/astral-sh/ruff/pull/9567)) +- \[`pylint`\] Exclude `self` and `cls` when counting method arguments (`PLR0917`) ([#9563](https://github.com/astral-sh/ruff/pull/9563)) + +### CLI + +- `--show-settings` displays active settings in a far more readable format ([#9464](https://github.com/astral-sh/ruff/pull/9464)) +- Add `--extension` support to the formatter ([#9483](https://github.com/astral-sh/ruff/pull/9483)) + +### Configuration + +- Ignore preview status for fixable and unfixable selectors ([#9538](https://github.com/astral-sh/ruff/pull/9538)) +- \[`pycodestyle`\] Use the configured tab size when expanding indents ([#9506](https://github.com/astral-sh/ruff/pull/9506)) + +### Bug fixes + +- Recursively visit deferred AST nodes ([#9541](https://github.com/astral-sh/ruff/pull/9541)) +- Visit deferred lambdas before type definitions ([#9540](https://github.com/astral-sh/ruff/pull/9540)) +- \[`flake8-simplify`\] Avoid some more `enumerate-for-loop` false positives (`SIM113`) ([#9515](https://github.com/astral-sh/ruff/pull/9515)) +- \[`pandas-vet`\] Limit inplace diagnostics to methods that accept inplace ([#9495](https://github.com/astral-sh/ruff/pull/9495)) +- \[`pylint`\] Add the `__prepare__` method to the list of recognized dunder method ([#9529](https://github.com/astral-sh/ruff/pull/9529)) +- \[`pylint`\] Ignore unnecessary dunder calls within dunder definitions ([#9496](https://github.com/astral-sh/ruff/pull/9496)) +- \[`refurb`\] Avoid bailing when `reimplemented-operator` is called on function (`FURB118`) ([#9556](https://github.com/astral-sh/ruff/pull/9556)) +- \[`ruff`\] Avoid treating named expressions as static keys (`RUF011`) ([#9494](https://github.com/astral-sh/ruff/pull/9494)) + +### Documentation + +- Add instructions on using `noqa` with isort rules ([#9555](https://github.com/astral-sh/ruff/pull/9555)) +- Documentation update for URL giving 'page not found' ([#9565](https://github.com/astral-sh/ruff/pull/9565)) +- Fix admonition in dark mode ([#9502](https://github.com/astral-sh/ruff/pull/9502)) +- Update contributing docs to use `cargo bench -p ruff_benchmark` ([#9535](https://github.com/astral-sh/ruff/pull/9535)) +- Update emacs integration section to include `emacs-ruff-format` ([#9403](https://github.com/astral-sh/ruff/pull/9403)) +- \[`flake8-blind-except`\] Document exceptions to `blind-except` rule ([#9580](https://github.com/astral-sh/ruff/pull/9580)) + ## 0.1.13 ### Bug fixes diff --git a/Cargo.lock b/Cargo.lock index 6c7bc8aab33af..9f2a895c42a8a 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2004,7 +2004,7 @@ dependencies = [ [[package]] name = "ruff" -version = "0.1.13" +version = "0.1.14" dependencies = [ "anyhow", "argfile", @@ -2164,7 +2164,7 @@ dependencies = [ [[package]] name = "ruff_linter" -version = "0.1.13" +version = "0.1.14" dependencies = [ "aho-corasick", "annotate-snippets 0.9.2", @@ -2416,7 +2416,7 @@ dependencies = [ [[package]] name = "ruff_shrinking" -version = "0.1.13" +version = "0.1.14" dependencies = [ "anyhow", "clap", diff --git a/README.md b/README.md index f212a97a46651..4944febea7050 100644 --- a/README.md +++ b/README.md @@ -150,7 +150,7 @@ Ruff can also be used as a [pre-commit](https://pre-commit.com/) hook via [`ruff ```yaml - repo: https://github.com/astral-sh/ruff-pre-commit # Ruff version. - rev: v0.1.13 + rev: v0.1.14 hooks: # Run the linter. - id: ruff diff --git a/crates/ruff/Cargo.toml b/crates/ruff/Cargo.toml index 8022529d89b48..66b1a9fdbf93f 100644 --- a/crates/ruff/Cargo.toml +++ b/crates/ruff/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "ruff" -version = "0.1.13" +version = "0.1.14" publish = false authors = { workspace = true } edition = { workspace = true } diff --git a/crates/ruff_linter/Cargo.toml b/crates/ruff_linter/Cargo.toml index 1a1fe1445cc79..13fe6fbd53747 100644 --- a/crates/ruff_linter/Cargo.toml +++ b/crates/ruff_linter/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "ruff_linter" -version = "0.1.13" +version = "0.1.14" publish = false authors = { workspace = true } edition = { workspace = true } diff --git a/crates/ruff_shrinking/Cargo.toml b/crates/ruff_shrinking/Cargo.toml index 38caa432248c4..b49893c13d4f2 100644 --- a/crates/ruff_shrinking/Cargo.toml +++ b/crates/ruff_shrinking/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "ruff_shrinking" -version = "0.1.13" +version = "0.1.14" edition = "2021" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html diff --git a/docs/integrations.md b/docs/integrations.md index 6cc40bb1cb585..470bc0d550c02 100644 --- a/docs/integrations.md +++ b/docs/integrations.md @@ -14,7 +14,7 @@ Ruff can be used as a [pre-commit](https://pre-commit.com) hook via [`ruff-pre-c ```yaml - repo: https://github.com/astral-sh/ruff-pre-commit # Ruff version. - rev: v0.1.13 + rev: v0.1.14 hooks: # Run the linter. - id: ruff @@ -27,7 +27,7 @@ To enable lint fixes, add the `--fix` argument to the lint hook: ```yaml - repo: https://github.com/astral-sh/ruff-pre-commit # Ruff version. - rev: v0.1.13 + rev: v0.1.14 hooks: # Run the linter. - id: ruff @@ -41,7 +41,7 @@ To run the hooks over Jupyter Notebooks too, add `jupyter` to the list of allowe ```yaml - repo: https://github.com/astral-sh/ruff-pre-commit # Ruff version. - rev: v0.1.13 + rev: v0.1.14 hooks: # Run the linter. - id: ruff diff --git a/pyproject.toml b/pyproject.toml index 6fb603d938e94..18712b1dfb483 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -4,7 +4,7 @@ build-backend = "maturin" [project] name = "ruff" -version = "0.1.13" +version = "0.1.14" description = "An extremely fast Python linter and code formatter, written in Rust." authors = [{ name = "Astral Software Inc.", email = "hey@astral.sh" }] readme = "README.md" diff --git a/scripts/benchmarks/pyproject.toml b/scripts/benchmarks/pyproject.toml index ff9e7c4f38604..db830a7ba39f0 100644 --- a/scripts/benchmarks/pyproject.toml +++ b/scripts/benchmarks/pyproject.toml @@ -1,6 +1,6 @@ [tool.poetry] name = "scripts" -version = "0.1.13" +version = "0.1.14" description = "" authors = ["Charles Marsh "] From 49a445a23dc13c832b80f7463e787bdeb6b15117 Mon Sep 17 00:00:00 2001 From: Steve C Date: Sat, 20 Jan 2024 22:59:48 -0500 Subject: [PATCH 04/31] [`pylint`] Implement `potential-index-error` (`PLE0643`) (#9545) ## Summary add `potential-index-error` rule (`PLE0643`) See: #970 ## Test Plan `cargo test` --- .../fixtures/pylint/potential_index_error.py | 9 +++ .../src/checkers/ast/analyze/expression.rs | 3 + crates/ruff_linter/src/codes.rs | 1 + crates/ruff_linter/src/rules/pylint/mod.rs | 1 + .../ruff_linter/src/rules/pylint/rules/mod.rs | 2 + .../pylint/rules/potential_index_error.rs | 73 +++++++++++++++++++ ...sts__PLE0643_potential_index_error.py.snap | 40 ++++++++++ ruff.schema.json | 2 + 8 files changed, 131 insertions(+) create mode 100644 crates/ruff_linter/resources/test/fixtures/pylint/potential_index_error.py create mode 100644 crates/ruff_linter/src/rules/pylint/rules/potential_index_error.rs create mode 100644 crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0643_potential_index_error.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/pylint/potential_index_error.py b/crates/ruff_linter/resources/test/fixtures/pylint/potential_index_error.py new file mode 100644 index 0000000000000..7f1a0b47264d5 --- /dev/null +++ b/crates/ruff_linter/resources/test/fixtures/pylint/potential_index_error.py @@ -0,0 +1,9 @@ +print([1, 2, 3][3]) # PLE0643 +print([1, 2, 3][-4]) # PLE0643 +print([1, 2, 3][999999999999999999999999999999999999999999]) # PLE0643 +print([1, 2, 3][-999999999999999999999999999999999999999999]) # PLE0643 + +print([1, 2, 3][2]) # OK +print([1, 2, 3][0]) # OK +print([1, 2, 3][-3]) # OK +print([1, 2, 3][3:]) # OK diff --git a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs index 7896a2f4f7c82..75ee29c6ea5d0 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs @@ -125,6 +125,9 @@ pub(crate) fn expression(expr: &Expr, checker: &mut Checker) { if checker.enabled(Rule::SliceCopy) { refurb::rules::slice_copy(checker, subscript); } + if checker.enabled(Rule::PotentialIndexError) { + pylint::rules::potential_index_error(checker, value, slice); + } pandas_vet::rules::subscript(checker, value, expr); } diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs index d073f0223f089..40bbdabb659a3 100644 --- a/crates/ruff_linter/src/codes.rs +++ b/crates/ruff_linter/src/codes.rs @@ -229,6 +229,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> { (Pylint, "E0307") => (RuleGroup::Stable, rules::pylint::rules::InvalidStrReturnType), (Pylint, "E0604") => (RuleGroup::Stable, rules::pylint::rules::InvalidAllObject), (Pylint, "E0605") => (RuleGroup::Stable, rules::pylint::rules::InvalidAllFormat), + (Pylint, "E0643") => (RuleGroup::Preview, rules::pylint::rules::PotentialIndexError), (Pylint, "E0704") => (RuleGroup::Preview, rules::pylint::rules::MisplacedBareRaise), (Pylint, "E1132") => (RuleGroup::Preview, rules::pylint::rules::RepeatedKeywordArgument), (Pylint, "E1142") => (RuleGroup::Stable, rules::pylint::rules::AwaitOutsideAsync), diff --git a/crates/ruff_linter/src/rules/pylint/mod.rs b/crates/ruff_linter/src/rules/pylint/mod.rs index 9182956716f34..6616ac26b2ed2 100644 --- a/crates/ruff_linter/src/rules/pylint/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/mod.rs @@ -167,6 +167,7 @@ mod tests { #[test_case(Rule::NoClassmethodDecorator, Path::new("no_method_decorator.py"))] #[test_case(Rule::UnnecessaryDunderCall, Path::new("unnecessary_dunder_call.py"))] #[test_case(Rule::NoStaticmethodDecorator, Path::new("no_method_decorator.py"))] + #[test_case(Rule::PotentialIndexError, Path::new("potential_index_error.py"))] #[test_case(Rule::SuperWithoutBrackets, Path::new("super_without_brackets.py"))] #[test_case( Rule::UnnecessaryDictIndexLookup, diff --git a/crates/ruff_linter/src/rules/pylint/rules/mod.rs b/crates/ruff_linter/src/rules/pylint/rules/mod.rs index ba5f2916dca13..22be5657bd22d 100644 --- a/crates/ruff_linter/src/rules/pylint/rules/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/rules/mod.rs @@ -42,6 +42,7 @@ pub(crate) use no_self_use::*; pub(crate) use non_ascii_module_import::*; pub(crate) use non_ascii_name::*; pub(crate) use nonlocal_without_binding::*; +pub(crate) use potential_index_error::*; pub(crate) use property_with_parameters::*; pub(crate) use redefined_argument_from_local::*; pub(crate) use redefined_loop_name::*; @@ -124,6 +125,7 @@ mod no_self_use; mod non_ascii_module_import; mod non_ascii_name; mod nonlocal_without_binding; +mod potential_index_error; mod property_with_parameters; mod redefined_argument_from_local; mod redefined_loop_name; diff --git a/crates/ruff_linter/src/rules/pylint/rules/potential_index_error.rs b/crates/ruff_linter/src/rules/pylint/rules/potential_index_error.rs new file mode 100644 index 0000000000000..0e4048c20e3fb --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/rules/potential_index_error.rs @@ -0,0 +1,73 @@ +use ruff_diagnostics::{Diagnostic, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::{self as ast, Expr}; +use ruff_text_size::Ranged; + +use crate::checkers::ast::Checker; + +/// ## What it does +/// Checks for hard-coded sequence accesses that are known to be out of bounds. +/// +/// ## Why is this bad? +/// Attempting to access a sequence with an out-of-bounds index will cause an +/// `IndexError` to be raised at runtime. When the sequence and index are +/// defined statically (e.g., subscripts on `list` and `tuple` literals, with +/// integer indexes), such errors can be detected ahead of time. +/// +/// ## Example +/// ```python +/// print([0, 1, 2][3]) +/// ``` +#[violation] +pub struct PotentialIndexError; + +impl Violation for PotentialIndexError { + #[derive_message_formats] + fn message(&self) -> String { + format!("Potential IndexError") + } +} + +/// PLE0643 +pub(crate) fn potential_index_error(checker: &mut Checker, value: &Expr, slice: &Expr) { + // Determine the length of the sequence. + let length = match value { + Expr::Tuple(ast::ExprTuple { elts, .. }) | Expr::List(ast::ExprList { elts, .. }) => { + match i64::try_from(elts.len()) { + Ok(length) => length, + Err(_) => return, + } + } + _ => { + return; + } + }; + + // Determine the index value. + let index = match slice { + Expr::NumberLiteral(ast::ExprNumberLiteral { + value: ast::Number::Int(number_value), + .. + }) => number_value.as_i64(), + Expr::UnaryOp(ast::ExprUnaryOp { + op: ast::UnaryOp::USub, + operand, + .. + }) => match operand.as_ref() { + Expr::NumberLiteral(ast::ExprNumberLiteral { + value: ast::Number::Int(number_value), + .. + }) => number_value.as_i64().map(|number| -number), + _ => return, + }, + _ => return, + }; + + // Emit a diagnostic if the index is out of bounds. If the index can't be represented as an + // `i64`, but the length _can_, then the index is definitely out of bounds. + if index.map_or(true, |index| index >= length || index < -length) { + checker + .diagnostics + .push(Diagnostic::new(PotentialIndexError, slice.range())); + } +} diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0643_potential_index_error.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0643_potential_index_error.py.snap new file mode 100644 index 0000000000000..2cfa565dc5eb8 --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0643_potential_index_error.py.snap @@ -0,0 +1,40 @@ +--- +source: crates/ruff_linter/src/rules/pylint/mod.rs +--- +potential_index_error.py:1:17: PLE0643 Potential IndexError + | +1 | print([1, 2, 3][3]) # PLE0643 + | ^ PLE0643 +2 | print([1, 2, 3][-4]) # PLE0643 +3 | print([1, 2, 3][999999999999999999999999999999999999999999]) # PLE0643 + | + +potential_index_error.py:2:17: PLE0643 Potential IndexError + | +1 | print([1, 2, 3][3]) # PLE0643 +2 | print([1, 2, 3][-4]) # PLE0643 + | ^^ PLE0643 +3 | print([1, 2, 3][999999999999999999999999999999999999999999]) # PLE0643 +4 | print([1, 2, 3][-999999999999999999999999999999999999999999]) # PLE0643 + | + +potential_index_error.py:3:17: PLE0643 Potential IndexError + | +1 | print([1, 2, 3][3]) # PLE0643 +2 | print([1, 2, 3][-4]) # PLE0643 +3 | print([1, 2, 3][999999999999999999999999999999999999999999]) # PLE0643 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ PLE0643 +4 | print([1, 2, 3][-999999999999999999999999999999999999999999]) # PLE0643 + | + +potential_index_error.py:4:17: PLE0643 Potential IndexError + | +2 | print([1, 2, 3][-4]) # PLE0643 +3 | print([1, 2, 3][999999999999999999999999999999999999999999]) # PLE0643 +4 | print([1, 2, 3][-999999999999999999999999999999999999999999]) # PLE0643 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ PLE0643 +5 | +6 | print([1, 2, 3][2]) # OK + | + + diff --git a/ruff.schema.json b/ruff.schema.json index ef61102357472..9ea851bd26b54 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -3129,6 +3129,8 @@ "PLE060", "PLE0604", "PLE0605", + "PLE064", + "PLE0643", "PLE07", "PLE070", "PLE0704", From a42600e9a2830a994eff16efbd46b346c75c9e5f Mon Sep 17 00:00:00 2001 From: Zanie Blue Date: Sat, 20 Jan 2024 23:07:11 -0600 Subject: [PATCH 05/31] Always unset the `required-version` option during ecosystem checks (#9593) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Uses our existing configuration overrides to unset the `required-version` option in ecosystem projects during checks. The downside to this approach, is we will now update the config file of _every_ project (with a config file). This roughly normalizes the configuration file, as we don't preserve comments and such. We could instead do a more targeted approach applying this override to projects which we know use this setting 🤷‍♀️ --- .../ruff-ecosystem/ruff_ecosystem/projects.py | 30 +++++++++++++++++-- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/python/ruff-ecosystem/ruff_ecosystem/projects.py b/python/ruff-ecosystem/ruff_ecosystem/projects.py index f34c17b08f817..fc0139c7d1e14 100644 --- a/python/ruff-ecosystem/ruff_ecosystem/projects.py +++ b/python/ruff-ecosystem/ruff_ecosystem/projects.py @@ -50,6 +50,12 @@ def __post_init__(self): ) +ALWAYS_CONFIG_OVERRIDES = { + # Always unset the required version or we'll fail + "required-version": None +} + + @dataclass(frozen=True) class ConfigOverrides(Serializable): """ @@ -89,11 +95,15 @@ def patch_config( """ Temporarily patch the Ruff configuration file in the given directory. """ + dot_ruff_toml = dirpath / ".ruff.toml" ruff_toml = dirpath / "ruff.toml" pyproject_toml = dirpath / "pyproject.toml" # Prefer `ruff.toml` over `pyproject.toml` - if ruff_toml.exists(): + if dot_ruff_toml.exists(): + path = dot_ruff_toml + base = [] + elif ruff_toml.exists(): path = ruff_toml base = [] else: @@ -101,6 +111,7 @@ def patch_config( base = ["tool", "ruff"] overrides = { + **ALWAYS_CONFIG_OVERRIDES, **self.always, **(self.when_preview if preview else self.when_no_preview), } @@ -117,9 +128,17 @@ def patch_config( contents = None toml = {} + # Do not write a toml file if it does not exist and we're just nulling values + if all((value is None for value in overrides.values())): + yield + return + # Update the TOML, using `.` to descend into nested keys for key, value in overrides.items(): - logger.debug(f"Setting {key}={value!r} in {path}") + if value is not None: + logger.debug(f"Setting {key}={value!r} in {path}") + else: + logger.debug(f"Restoring {key} to default in {path}") target = toml names = base + key.split(".") @@ -127,7 +146,12 @@ def patch_config( if name not in target: target[name] = {} target = target[name] - target[names[-1]] = value + + if value is None: + # Remove null values i.e. restore to default + target.pop(names[-1], None) + else: + target[names[-1]] = value tomli_w.dump(toml, path.open("wb")) From 9dc59cbb81d59d7bde62ed8c88fae9cff9d7c86e Mon Sep 17 00:00:00 2001 From: Robert Craigie Date: Sun, 21 Jan 2024 15:30:14 +0000 Subject: [PATCH 06/31] Docs: fix isort rule code (#9598) ## Summary Fixes a typo in the docs, the isort rule code in an example was not correct. --- docs/linter.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/linter.md b/docs/linter.md index 39b0d73bbd32b..7b8dbd086e288 100644 --- a/docs/linter.md +++ b/docs/linter.md @@ -308,7 +308,7 @@ For import sorting, the `noqa` should come at the end of the first line in the i will apply to all imports in the block, like so: ```python -import os # noqa: I100 +import os # noqa: I001 import abc ``` From 9e5f3f1b1b94bddd808bda258934043cdc1f3708 Mon Sep 17 00:00:00 2001 From: Steve C Date: Sun, 21 Jan 2024 11:17:58 -0500 Subject: [PATCH 07/31] [`pylint`] Add fix for `useless-else-on-loop` (`PLW0120`) (#9590) ## Summary adds fix for `useless-else-on-loop` / `PLW0120`. ## Test Plan `cargo test` --- .../fixtures/pylint/useless_else_on_loop.py | 11 ++ crates/ruff_linter/src/rules/pylint/mod.rs | 21 +- .../pylint/rules/useless_else_on_loop.rs | 102 ++++++++-- ...ests__PLW0120_useless_else_on_loop.py.snap | 32 ++- ...view__PLW0120_useless_else_on_loop.py.snap | 187 ++++++++++++++++++ crates/ruff_linter/src/rules/pyupgrade/mod.rs | 2 +- 6 files changed, 332 insertions(+), 23 deletions(-) create mode 100644 crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLW0120_useless_else_on_loop.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/pylint/useless_else_on_loop.py b/crates/ruff_linter/resources/test/fixtures/pylint/useless_else_on_loop.py index 5d2245e69ac7f..1eaf4fb82fb11 100644 --- a/crates/ruff_linter/resources/test/fixtures/pylint/useless_else_on_loop.py +++ b/crates/ruff_linter/resources/test/fixtures/pylint/useless_else_on_loop.py @@ -135,3 +135,14 @@ def test_break_in_match(): else: return True return False + + +def test_retain_comment(): + """Retain the comment within the `else` block""" + for j in range(10): + pass + else: + # [useless-else-on-loop] + print("fat chance") + for j in range(10): + break diff --git a/crates/ruff_linter/src/rules/pylint/mod.rs b/crates/ruff_linter/src/rules/pylint/mod.rs index 6616ac26b2ed2..bf5bce4a353e3 100644 --- a/crates/ruff_linter/src/rules/pylint/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/mod.rs @@ -12,12 +12,13 @@ mod tests { use rustc_hash::FxHashSet; use test_case::test_case; - use crate::assert_messages; use crate::registry::Rule; use crate::rules::pylint; + use crate::settings::types::PreviewMode; use crate::settings::types::PythonVersion; use crate::settings::LinterSettings; use crate::test::test_path; + use crate::{assert_messages, settings}; #[test_case(Rule::AndOrTernary, Path::new("and_or_ternary.py"))] #[test_case(Rule::AssertOnStringLiteral, Path::new("assert_on_string_literal.py"))] @@ -191,6 +192,24 @@ mod tests { Ok(()) } + #[test_case(Rule::UselessElseOnLoop, Path::new("useless_else_on_loop.py"))] + fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> { + let snapshot = format!( + "preview__{}_{}", + rule_code.noqa_code(), + path.to_string_lossy() + ); + let diagnostics = test_path( + Path::new("pylint").join(path).as_path(), + &settings::LinterSettings { + preview: PreviewMode::Enabled, + ..settings::LinterSettings::for_rule(rule_code) + }, + )?; + assert_messages!(snapshot, diagnostics); + Ok(()) + } + #[test] fn repeated_isinstance_calls() -> Result<()> { let diagnostics = test_path( diff --git a/crates/ruff_linter/src/rules/pylint/rules/useless_else_on_loop.rs b/crates/ruff_linter/src/rules/pylint/rules/useless_else_on_loop.rs index ff354860c5cc3..24c9b9769b08b 100644 --- a/crates/ruff_linter/src/rules/pylint/rules/useless_else_on_loop.rs +++ b/crates/ruff_linter/src/rules/pylint/rules/useless_else_on_loop.rs @@ -1,10 +1,16 @@ -use ruff_python_ast::{self as ast, ExceptHandler, MatchCase, Stmt}; +use anyhow::Result; -use ruff_diagnostics::{Diagnostic, Violation}; +use ast::whitespace::indentation; +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; use ruff_macros::{derive_message_formats, violation}; use ruff_python_ast::identifier; +use ruff_python_ast::{self as ast, ExceptHandler, MatchCase, Stmt}; +use ruff_python_codegen::Stylist; +use ruff_source_file::Locator; +use ruff_text_size::{Ranged, TextRange}; use crate::checkers::ast::Checker; +use crate::rules::pyupgrade::fixes::adjust_indentation; /// ## What it does /// Checks for `else` clauses on loops without a `break` statement. @@ -42,15 +48,50 @@ use crate::checkers::ast::Checker; pub struct UselessElseOnLoop; impl Violation for UselessElseOnLoop { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; #[derive_message_formats] fn message(&self) -> String { format!( - "`else` clause on loop without a `break` statement; remove the `else` and de-indent all the \ - code inside it" + "`else` clause on loop without a `break` statement; remove the `else` and dedent its contents" ) } + + fn fix_title(&self) -> Option { + Some("Remove `else`".to_string()) + } } +/// PLW0120 +pub(crate) fn useless_else_on_loop( + checker: &mut Checker, + stmt: &Stmt, + body: &[Stmt], + orelse: &[Stmt], +) { + if orelse.is_empty() || loop_exits_early(body) { + return; + } + + let else_range = identifier::else_(stmt, checker.locator().contents()).expect("else clause"); + + let mut diagnostic = Diagnostic::new(UselessElseOnLoop, else_range); + + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| { + remove_else( + stmt, + orelse, + else_range, + checker.locator(), + checker.stylist(), + ) + }); + } + + checker.diagnostics.push(diagnostic); +} + +/// Returns `true` if the given body contains a `break` statement. fn loop_exits_early(body: &[Stmt]) -> bool { body.iter().any(|stmt| match stmt { Stmt::If(ast::StmtIf { @@ -91,17 +132,50 @@ fn loop_exits_early(body: &[Stmt]) -> bool { }) } -/// PLW0120 -pub(crate) fn useless_else_on_loop( - checker: &mut Checker, +/// Generate a [`Fix`] to remove the `else` clause from the given statement. +fn remove_else( stmt: &Stmt, - body: &[Stmt], orelse: &[Stmt], -) { - if !orelse.is_empty() && !loop_exits_early(body) { - checker.diagnostics.push(Diagnostic::new( - UselessElseOnLoop, - identifier::else_(stmt, checker.locator().contents()).unwrap(), - )); + else_range: TextRange, + locator: &Locator, + stylist: &Stylist, +) -> Result { + let Some(start) = orelse.first() else { + return Err(anyhow::anyhow!("Empty `else` clause")); + }; + let Some(end) = orelse.last() else { + return Err(anyhow::anyhow!("Empty `else` clause")); + }; + + let start_indentation = indentation(locator, start); + if start_indentation.is_none() { + // Inline `else` block (e.g., `else: x = 1`). + Ok(Fix::safe_edit(Edit::deletion( + else_range.start(), + start.start(), + ))) + } else { + // Identify the indentation of the loop itself (e.g., the `while` or `for`). + let Some(desired_indentation) = indentation(locator, stmt) else { + return Err(anyhow::anyhow!("Compound statement cannot be inlined")); + }; + + // Dedent the content from the end of the `else` to the end of the loop. + let indented = adjust_indentation( + TextRange::new( + locator.full_line_end(else_range.start()), + locator.full_line_end(end.end()), + ), + desired_indentation, + locator, + stylist, + )?; + + // Replace the content from the start of the `else` to the end of the loop. + Ok(Fix::safe_edit(Edit::replacement( + indented, + locator.line_start(else_range.start()), + locator.full_line_end(end.end()), + ))) } } diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLW0120_useless_else_on_loop.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLW0120_useless_else_on_loop.py.snap index bed971a55b072..856658731629f 100644 --- a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLW0120_useless_else_on_loop.py.snap +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLW0120_useless_else_on_loop.py.snap @@ -1,7 +1,7 @@ --- source: crates/ruff_linter/src/rules/pylint/mod.rs --- -useless_else_on_loop.py:9:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:9:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 7 | if i % 2: 8 | return i @@ -10,8 +10,9 @@ useless_else_on_loop.py:9:5: PLW0120 `else` clause on loop without a `break` sta 10 | print("math is broken") 11 | return None | + = help: Remove `else` -useless_else_on_loop.py:18:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:18:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 16 | while True: 17 | return 1 @@ -20,8 +21,9 @@ useless_else_on_loop.py:18:5: PLW0120 `else` clause on loop without a `break` st 19 | print("math is broken") 20 | return None | + = help: Remove `else` -useless_else_on_loop.py:30:1: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:30:1: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 28 | break 29 | @@ -29,8 +31,9 @@ useless_else_on_loop.py:30:1: PLW0120 `else` clause on loop without a `break` st | ^^^^ PLW0120 31 | print("or else!") | + = help: Remove `else` -useless_else_on_loop.py:37:1: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:37:1: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 35 | while False: 36 | break @@ -38,8 +41,9 @@ useless_else_on_loop.py:37:1: PLW0120 `else` clause on loop without a `break` st | ^^^^ PLW0120 38 | print("or else!") | + = help: Remove `else` -useless_else_on_loop.py:42:1: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:42:1: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 40 | for j in range(10): 41 | pass @@ -48,8 +52,9 @@ useless_else_on_loop.py:42:1: PLW0120 `else` clause on loop without a `break` st 43 | print("fat chance") 44 | for j in range(10): | + = help: Remove `else` -useless_else_on_loop.py:88:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:88:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 86 | else: 87 | print("all right") @@ -58,8 +63,9 @@ useless_else_on_loop.py:88:5: PLW0120 `else` clause on loop without a `break` st 89 | return True 90 | return False | + = help: Remove `else` -useless_else_on_loop.py:98:9: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and de-indent all the code inside it +useless_else_on_loop.py:98:9: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents | 96 | for _ in range(3): 97 | pass @@ -68,5 +74,17 @@ useless_else_on_loop.py:98:9: PLW0120 `else` clause on loop without a `break` st 99 | if 1 < 2: # pylint: disable=comparison-of-constants 100 | break | + = help: Remove `else` + +useless_else_on_loop.py:144:5: PLW0120 `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +142 | for j in range(10): +143 | pass +144 | else: + | ^^^^ PLW0120 +145 | # [useless-else-on-loop] +146 | print("fat chance") + | + = help: Remove `else` diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLW0120_useless_else_on_loop.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLW0120_useless_else_on_loop.py.snap new file mode 100644 index 0000000000000..ea72439be9eb0 --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLW0120_useless_else_on_loop.py.snap @@ -0,0 +1,187 @@ +--- +source: crates/ruff_linter/src/rules/pylint/mod.rs +--- +useless_else_on_loop.py:9:5: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | + 7 | if i % 2: + 8 | return i + 9 | else: # [useless-else-on-loop] + | ^^^^ PLW0120 +10 | print("math is broken") +11 | return None + | + = help: Remove `else` + +ℹ Safe fix +6 6 | for i in range(10): +7 7 | if i % 2: +8 8 | return i +9 |- else: # [useless-else-on-loop] +10 |- print("math is broken") + 9 |+ print("math is broken") +11 10 | return None +12 11 | +13 12 | + +useless_else_on_loop.py:18:5: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +16 | while True: +17 | return 1 +18 | else: # [useless-else-on-loop] + | ^^^^ PLW0120 +19 | print("math is broken") +20 | return None + | + = help: Remove `else` + +ℹ Safe fix +15 15 | """else + return is not acceptable.""" +16 16 | while True: +17 17 | return 1 +18 |- else: # [useless-else-on-loop] +19 |- print("math is broken") + 18 |+ print("math is broken") +20 19 | return None +21 20 | +22 21 | + +useless_else_on_loop.py:30:1: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +28 | break +29 | +30 | else: # [useless-else-on-loop] + | ^^^^ PLW0120 +31 | print("or else!") + | + = help: Remove `else` + +ℹ Safe fix +27 27 | for _ in range(10): +28 28 | break +29 29 | +30 |-else: # [useless-else-on-loop] +31 |- print("or else!") + 30 |+print("or else!") +32 31 | +33 32 | +34 33 | while True: + +useless_else_on_loop.py:37:1: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +35 | while False: +36 | break +37 | else: # [useless-else-on-loop] + | ^^^^ PLW0120 +38 | print("or else!") + | + = help: Remove `else` + +ℹ Safe fix +34 34 | while True: +35 35 | while False: +36 36 | break +37 |-else: # [useless-else-on-loop] +38 |- print("or else!") + 37 |+print("or else!") +39 38 | +40 39 | for j in range(10): +41 40 | pass + +useless_else_on_loop.py:42:1: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +40 | for j in range(10): +41 | pass +42 | else: # [useless-else-on-loop] + | ^^^^ PLW0120 +43 | print("fat chance") +44 | for j in range(10): + | + = help: Remove `else` + +ℹ Safe fix +39 39 | +40 40 | for j in range(10): +41 41 | pass +42 |-else: # [useless-else-on-loop] +43 |- print("fat chance") +44 |- for j in range(10): +45 |- break + 42 |+print("fat chance") + 43 |+for j in range(10): + 44 |+ break +46 45 | +47 46 | +48 47 | def test_return_for2(): + +useless_else_on_loop.py:88:5: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +86 | else: +87 | print("all right") +88 | else: # [useless-else-on-loop] + | ^^^^ PLW0120 +89 | return True +90 | return False + | + = help: Remove `else` + +ℹ Safe fix +85 85 | break +86 86 | else: +87 87 | print("all right") +88 |- else: # [useless-else-on-loop] +89 |- return True + 88 |+ return True +90 89 | return False +91 90 | +92 91 | + +useless_else_on_loop.py:98:9: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | + 96 | for _ in range(3): + 97 | pass + 98 | else: + | ^^^^ PLW0120 + 99 | if 1 < 2: # pylint: disable=comparison-of-constants +100 | break + | + = help: Remove `else` + +ℹ Safe fix +95 95 | for _ in range(10): +96 96 | for _ in range(3): +97 97 | pass +98 |- else: +99 |- if 1 < 2: # pylint: disable=comparison-of-constants +100 |- break + 98 |+ if 1 < 2: # pylint: disable=comparison-of-constants + 99 |+ break +101 100 | else: +102 101 | return True +103 102 | return False + +useless_else_on_loop.py:144:5: PLW0120 [*] `else` clause on loop without a `break` statement; remove the `else` and dedent its contents + | +142 | for j in range(10): +143 | pass +144 | else: + | ^^^^ PLW0120 +145 | # [useless-else-on-loop] +146 | print("fat chance") + | + = help: Remove `else` + +ℹ Safe fix +141 141 | """Retain the comment within the `else` block""" +142 142 | for j in range(10): +143 143 | pass +144 |- else: +145 |- # [useless-else-on-loop] +146 |- print("fat chance") +147 |- for j in range(10): +148 |- break + 144 |+ # [useless-else-on-loop] + 145 |+ print("fat chance") + 146 |+ for j in range(10): + 147 |+ break + + diff --git a/crates/ruff_linter/src/rules/pyupgrade/mod.rs b/crates/ruff_linter/src/rules/pyupgrade/mod.rs index 194bcef73fa3f..10fae94973062 100644 --- a/crates/ruff_linter/src/rules/pyupgrade/mod.rs +++ b/crates/ruff_linter/src/rules/pyupgrade/mod.rs @@ -1,5 +1,5 @@ //! Rules from [pyupgrade](https://pypi.org/project/pyupgrade/). -mod fixes; +pub(crate) mod fixes; mod helpers; pub(crate) mod rules; pub mod settings; From b64aa1e86d24e0fdfd8c0f81378487d05445b999 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Sun, 21 Jan 2024 14:30:00 -0500 Subject: [PATCH 08/31] Split pycodestyle import rules into separate files (#9600) --- .../src/rules/pycodestyle/rules/mod.rs | 7 +-- ...rs => module_import_not_at_top_of_file.rs} | 39 +---------------- .../rules/multiple_imports_on_one_line.rs | 43 +++++++++++++++++++ 3 files changed, 48 insertions(+), 41 deletions(-) rename crates/ruff_linter/src/rules/pycodestyle/rules/{imports.rs => module_import_not_at_top_of_file.rs} (67%) create mode 100644 crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs diff --git a/crates/ruff_linter/src/rules/pycodestyle/rules/mod.rs b/crates/ruff_linter/src/rules/pycodestyle/rules/mod.rs index 33b8cc49609bc..327d81f02409c 100644 --- a/crates/ruff_linter/src/rules/pycodestyle/rules/mod.rs +++ b/crates/ruff_linter/src/rules/pycodestyle/rules/mod.rs @@ -6,14 +6,14 @@ pub(crate) use compound_statements::*; pub(crate) use doc_line_too_long::*; pub(crate) use errors::*; pub use errors::{IOError, SyntaxError}; -pub(crate) use imports::*; - pub(crate) use invalid_escape_sequence::*; pub(crate) use lambda_assignment::*; pub(crate) use line_too_long::*; pub(crate) use literal_comparisons::*; pub(crate) use missing_newline_at_end_of_file::*; pub(crate) use mixed_spaces_and_tabs::*; +pub(crate) use module_import_not_at_top_of_file::*; +pub(crate) use multiple_imports_on_one_line::*; pub(crate) use not_tests::*; pub(crate) use tab_indentation::*; pub(crate) use trailing_whitespace::*; @@ -26,7 +26,6 @@ mod bare_except; mod compound_statements; mod doc_line_too_long; mod errors; -mod imports; mod invalid_escape_sequence; mod lambda_assignment; mod line_too_long; @@ -34,6 +33,8 @@ mod literal_comparisons; pub(crate) mod logical_lines; mod missing_newline_at_end_of_file; mod mixed_spaces_and_tabs; +mod module_import_not_at_top_of_file; +mod multiple_imports_on_one_line; mod not_tests; mod tab_indentation; mod trailing_whitespace; diff --git a/crates/ruff_linter/src/rules/pycodestyle/rules/imports.rs b/crates/ruff_linter/src/rules/pycodestyle/rules/module_import_not_at_top_of_file.rs similarity index 67% rename from crates/ruff_linter/src/rules/pycodestyle/rules/imports.rs rename to crates/ruff_linter/src/rules/pycodestyle/rules/module_import_not_at_top_of_file.rs index b15f852605fe0..ff6c38bf0ce54 100644 --- a/crates/ruff_linter/src/rules/pycodestyle/rules/imports.rs +++ b/crates/ruff_linter/src/rules/pycodestyle/rules/module_import_not_at_top_of_file.rs @@ -1,38 +1,10 @@ use ruff_diagnostics::{Diagnostic, Violation}; use ruff_macros::{derive_message_formats, violation}; -use ruff_python_ast::{Alias, PySourceType, Stmt}; +use ruff_python_ast::{PySourceType, Stmt}; use ruff_text_size::Ranged; use crate::checkers::ast::Checker; -/// ## What it does -/// Check for multiple imports on one line. -/// -/// ## Why is this bad? -/// According to [PEP 8], "imports should usually be on separate lines." -/// -/// ## Example -/// ```python -/// import sys, os -/// ``` -/// -/// Use instead: -/// ```python -/// import os -/// import sys -/// ``` -/// -/// [PEP 8]: https://peps.python.org/pep-0008/#imports -#[violation] -pub struct MultipleImportsOnOneLine; - -impl Violation for MultipleImportsOnOneLine { - #[derive_message_formats] - fn message(&self) -> String { - format!("Multiple imports on one line") - } -} - /// ## What it does /// Checks for imports that are not at the top of the file. For Jupyter notebooks, this /// checks for imports that are not at the top of the cell. @@ -82,15 +54,6 @@ impl Violation for ModuleImportNotAtTopOfFile { } } -/// E401 -pub(crate) fn multiple_imports_on_one_line(checker: &mut Checker, stmt: &Stmt, names: &[Alias]) { - if names.len() > 1 { - checker - .diagnostics - .push(Diagnostic::new(MultipleImportsOnOneLine, stmt.range())); - } -} - /// E402 pub(crate) fn module_import_not_at_top_of_file(checker: &mut Checker, stmt: &Stmt) { if checker.semantic().seen_import_boundary() && checker.semantic().at_top_level() { diff --git a/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs b/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs new file mode 100644 index 0000000000000..b8dcb1de6b4e4 --- /dev/null +++ b/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs @@ -0,0 +1,43 @@ +use ruff_diagnostics::{Diagnostic, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::{Alias, Stmt}; +use ruff_text_size::Ranged; + +use crate::checkers::ast::Checker; + +/// ## What it does +/// Check for multiple imports on one line. +/// +/// ## Why is this bad? +/// According to [PEP 8], "imports should usually be on separate lines." +/// +/// ## Example +/// ```python +/// import sys, os +/// ``` +/// +/// Use instead: +/// ```python +/// import os +/// import sys +/// ``` +/// +/// [PEP 8]: https://peps.python.org/pep-0008/#imports +#[violation] +pub struct MultipleImportsOnOneLine; + +impl Violation for MultipleImportsOnOneLine { + #[derive_message_formats] + fn message(&self) -> String { + format!("Multiple imports on one line") + } +} + +/// E401 +pub(crate) fn multiple_imports_on_one_line(checker: &mut Checker, stmt: &Stmt, names: &[Alias]) { + if names.len() > 1 { + checker + .diagnostics + .push(Diagnostic::new(MultipleImportsOnOneLine, stmt.range())); + } +} From 837984168aeb35693ae0aeb6d475bcf03c3fa7d7 Mon Sep 17 00:00:00 2001 From: Steve C Date: Sun, 21 Jan 2024 15:33:38 -0500 Subject: [PATCH 09/31] [`pycodestyle`] Add fix for `multiple-imports-on-one-line` (`E401`) (#9518) ## Summary Add autofix for `multiple_imports_on_one_line`, `E401` ## Test Plan `cargo test` --- .../test/fixtures/pycodestyle/E40.py | 19 ++ .../ruff_linter/src/rules/pycodestyle/mod.rs | 1 + .../rules/multiple_imports_on_one_line.rs | 87 ++++++++- ...ules__pycodestyle__tests__E401_E40.py.snap | 83 +++++++- ...ules__pycodestyle__tests__E402_E40.py.snap | 60 ++++-- ...odestyle__tests__preview__E401_E40.py.snap | 180 ++++++++++++++++++ 6 files changed, 407 insertions(+), 23 deletions(-) create mode 100644 crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__preview__E401_E40.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/pycodestyle/E40.py b/crates/ruff_linter/resources/test/fixtures/pycodestyle/E40.py index 6c71fa2b0f295..109173a6fc93c 100644 --- a/crates/ruff_linter/resources/test/fixtures/pycodestyle/E40.py +++ b/crates/ruff_linter/resources/test/fixtures/pycodestyle/E40.py @@ -1,5 +1,6 @@ #: E401 import os, sys + #: Okay import os import sys @@ -59,3 +60,21 @@ a = 1 import bar + +#: E401 +import re as regex, string # also with a comment! +import re as regex, string; x = 1 + +x = 1; import re as regex, string + + +def blah(): + import datetime as dt, copy + + def nested_and_tested(): + import builtins, textwrap as tw + + x = 1; import re as regex, string + import re as regex, string; x = 1 + + if True: import re as regex, string diff --git a/crates/ruff_linter/src/rules/pycodestyle/mod.rs b/crates/ruff_linter/src/rules/pycodestyle/mod.rs index 8475fde905e67..12bc583c20856 100644 --- a/crates/ruff_linter/src/rules/pycodestyle/mod.rs +++ b/crates/ruff_linter/src/rules/pycodestyle/mod.rs @@ -67,6 +67,7 @@ mod tests { } #[test_case(Rule::IsLiteral, Path::new("constant_literals.py"))] + #[test_case(Rule::MultipleImportsOnOneLine, Path::new("E40.py"))] #[test_case(Rule::ModuleImportNotAtTopOfFile, Path::new("E402_0.py"))] #[test_case(Rule::TypeComparison, Path::new("E721.py"))] fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> { diff --git a/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs b/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs index b8dcb1de6b4e4..378f09277291f 100644 --- a/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs +++ b/crates/ruff_linter/src/rules/pycodestyle/rules/multiple_imports_on_one_line.rs @@ -1,7 +1,13 @@ -use ruff_diagnostics::{Diagnostic, Violation}; +use itertools::Itertools; + +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; use ruff_macros::{derive_message_formats, violation}; use ruff_python_ast::{Alias, Stmt}; -use ruff_text_size::Ranged; +use ruff_python_codegen::Stylist; +use ruff_python_index::Indexer; +use ruff_python_trivia::indentation_at_offset; +use ruff_source_file::Locator; +use ruff_text_size::{Ranged, TextRange}; use crate::checkers::ast::Checker; @@ -27,17 +33,88 @@ use crate::checkers::ast::Checker; pub struct MultipleImportsOnOneLine; impl Violation for MultipleImportsOnOneLine { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; + #[derive_message_formats] fn message(&self) -> String { format!("Multiple imports on one line") } + + fn fix_title(&self) -> Option { + Some(format!("Split imports")) + } } /// E401 pub(crate) fn multiple_imports_on_one_line(checker: &mut Checker, stmt: &Stmt, names: &[Alias]) { if names.len() > 1 { - checker - .diagnostics - .push(Diagnostic::new(MultipleImportsOnOneLine, stmt.range())); + let mut diagnostic = Diagnostic::new(MultipleImportsOnOneLine, stmt.range()); + if checker.settings.preview.is_enabled() { + diagnostic.set_fix(split_imports( + stmt, + names, + checker.locator(), + checker.indexer(), + checker.stylist(), + )); + } + checker.diagnostics.push(diagnostic); + } +} + +/// Generate a [`Fix`] to split the imports across multiple statements. +fn split_imports( + stmt: &Stmt, + names: &[Alias], + locator: &Locator, + indexer: &Indexer, + stylist: &Stylist, +) -> Fix { + if indexer.in_multi_statement_line(stmt, locator) { + // Ex) `x = 1; import os, sys` (convert to `x = 1; import os; import sys`) + let replacement = names + .iter() + .map(|alias| { + let Alias { + range: _, + name, + asname, + } = alias; + + if let Some(asname) = asname { + format!("import {name} as {asname}") + } else { + format!("import {name}") + } + }) + .join("; "); + + Fix::safe_edit(Edit::range_replacement(replacement, stmt.range())) + } else { + // Ex) `import os, sys` (convert to `import os\nimport sys`) + let indentation = indentation_at_offset(stmt.start(), locator).unwrap_or_default(); + + // Generate newline-delimited imports. + let replacement = names + .iter() + .map(|alias| { + let Alias { + range: _, + name, + asname, + } = alias; + + if let Some(asname) = asname { + format!("{indentation}import {name} as {asname}") + } else { + format!("{indentation}import {name}") + } + }) + .join(stylist.line_ending().as_str()); + + Fix::safe_edit(Edit::range_replacement( + replacement, + TextRange::new(locator.line_start(stmt.start()), stmt.end()), + )) } } diff --git a/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E401_E40.py.snap b/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E401_E40.py.snap index 3ee33734d45f6..6cf442f1bb096 100644 --- a/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E401_E40.py.snap +++ b/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E401_E40.py.snap @@ -6,8 +6,87 @@ E40.py:2:1: E401 Multiple imports on one line 1 | #: E401 2 | import os, sys | ^^^^^^^^^^^^^^ E401 -3 | #: Okay -4 | import os +3 | +4 | #: Okay | + = help: Split imports + +E40.py:65:1: E401 Multiple imports on one line + | +64 | #: E401 +65 | import re as regex, string # also with a comment! + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +66 | import re as regex, string; x = 1 + | + = help: Split imports + +E40.py:66:1: E401 Multiple imports on one line + | +64 | #: E401 +65 | import re as regex, string # also with a comment! +66 | import re as regex, string; x = 1 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +67 | +68 | x = 1; import re as regex, string + | + = help: Split imports + +E40.py:68:8: E401 Multiple imports on one line + | +66 | import re as regex, string; x = 1 +67 | +68 | x = 1; import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 + | + = help: Split imports + +E40.py:72:5: E401 Multiple imports on one line + | +71 | def blah(): +72 | import datetime as dt, copy + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +73 | +74 | def nested_and_tested(): + | + = help: Split imports + +E40.py:75:9: E401 Multiple imports on one line + | +74 | def nested_and_tested(): +75 | import builtins, textwrap as tw + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +76 | +77 | x = 1; import re as regex, string + | + = help: Split imports + +E40.py:77:16: E401 Multiple imports on one line + | +75 | import builtins, textwrap as tw +76 | +77 | x = 1; import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +78 | import re as regex, string; x = 1 + | + = help: Split imports + +E40.py:78:9: E401 Multiple imports on one line + | +77 | x = 1; import re as regex, string +78 | import re as regex, string; x = 1 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +79 | +80 | if True: import re as regex, string + | + = help: Split imports + +E40.py:80:14: E401 Multiple imports on one line + | +78 | import re as regex, string; x = 1 +79 | +80 | if True: import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 + | + = help: Split imports diff --git a/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E402_E40.py.snap b/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E402_E40.py.snap index 2525069ae9ff4..6d87474964664 100644 --- a/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E402_E40.py.snap +++ b/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E402_E40.py.snap @@ -1,32 +1,60 @@ --- source: crates/ruff_linter/src/rules/pycodestyle/mod.rs --- -E40.py:55:1: E402 Module level import not at top of file +E40.py:56:1: E402 Module level import not at top of file | -53 | VERSION = '1.2.3' -54 | -55 | import foo +54 | VERSION = '1.2.3' +55 | +56 | import foo | ^^^^^^^^^^ E402 -56 | #: E402 -57 | import foo +57 | #: E402 +58 | import foo | -E40.py:57:1: E402 Module level import not at top of file +E40.py:58:1: E402 Module level import not at top of file | -55 | import foo -56 | #: E402 -57 | import foo +56 | import foo +57 | #: E402 +58 | import foo | ^^^^^^^^^^ E402 -58 | -59 | a = 1 +59 | +60 | a = 1 | -E40.py:61:1: E402 Module level import not at top of file +E40.py:62:1: E402 Module level import not at top of file | -59 | a = 1 -60 | -61 | import bar +60 | a = 1 +61 | +62 | import bar | ^^^^^^^^^^ E402 +63 | +64 | #: E401 + | + +E40.py:65:1: E402 Module level import not at top of file + | +64 | #: E401 +65 | import re as regex, string # also with a comment! + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E402 +66 | import re as regex, string; x = 1 + | + +E40.py:66:1: E402 Module level import not at top of file + | +64 | #: E401 +65 | import re as regex, string # also with a comment! +66 | import re as regex, string; x = 1 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E402 +67 | +68 | x = 1; import re as regex, string + | + +E40.py:68:8: E402 Module level import not at top of file + | +66 | import re as regex, string; x = 1 +67 | +68 | x = 1; import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E402 | diff --git a/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__preview__E401_E40.py.snap b/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__preview__E401_E40.py.snap new file mode 100644 index 0000000000000..165907675e5bc --- /dev/null +++ b/crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__preview__E401_E40.py.snap @@ -0,0 +1,180 @@ +--- +source: crates/ruff_linter/src/rules/pycodestyle/mod.rs +--- +E40.py:2:1: E401 [*] Multiple imports on one line + | +1 | #: E401 +2 | import os, sys + | ^^^^^^^^^^^^^^ E401 +3 | +4 | #: Okay + | + = help: Split imports + +ℹ Safe fix +1 1 | #: E401 +2 |-import os, sys + 2 |+import os + 3 |+import sys +3 4 | +4 5 | #: Okay +5 6 | import os + +E40.py:65:1: E401 [*] Multiple imports on one line + | +64 | #: E401 +65 | import re as regex, string # also with a comment! + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +66 | import re as regex, string; x = 1 + | + = help: Split imports + +ℹ Safe fix +62 62 | import bar +63 63 | +64 64 | #: E401 +65 |-import re as regex, string # also with a comment! + 65 |+import re as regex + 66 |+import string # also with a comment! +66 67 | import re as regex, string; x = 1 +67 68 | +68 69 | x = 1; import re as regex, string + +E40.py:66:1: E401 [*] Multiple imports on one line + | +64 | #: E401 +65 | import re as regex, string # also with a comment! +66 | import re as regex, string; x = 1 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +67 | +68 | x = 1; import re as regex, string + | + = help: Split imports + +ℹ Safe fix +63 63 | +64 64 | #: E401 +65 65 | import re as regex, string # also with a comment! +66 |-import re as regex, string; x = 1 + 66 |+import re as regex; import string; x = 1 +67 67 | +68 68 | x = 1; import re as regex, string +69 69 | + +E40.py:68:8: E401 [*] Multiple imports on one line + | +66 | import re as regex, string; x = 1 +67 | +68 | x = 1; import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 + | + = help: Split imports + +ℹ Safe fix +65 65 | import re as regex, string # also with a comment! +66 66 | import re as regex, string; x = 1 +67 67 | +68 |-x = 1; import re as regex, string + 68 |+x = 1; import re as regex; import string +69 69 | +70 70 | +71 71 | def blah(): + +E40.py:72:5: E401 [*] Multiple imports on one line + | +71 | def blah(): +72 | import datetime as dt, copy + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +73 | +74 | def nested_and_tested(): + | + = help: Split imports + +ℹ Safe fix +69 69 | +70 70 | +71 71 | def blah(): +72 |- import datetime as dt, copy + 72 |+ import datetime as dt + 73 |+ import copy +73 74 | +74 75 | def nested_and_tested(): +75 76 | import builtins, textwrap as tw + +E40.py:75:9: E401 [*] Multiple imports on one line + | +74 | def nested_and_tested(): +75 | import builtins, textwrap as tw + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +76 | +77 | x = 1; import re as regex, string + | + = help: Split imports + +ℹ Safe fix +72 72 | import datetime as dt, copy +73 73 | +74 74 | def nested_and_tested(): +75 |- import builtins, textwrap as tw + 75 |+ import builtins + 76 |+ import textwrap as tw +76 77 | +77 78 | x = 1; import re as regex, string +78 79 | import re as regex, string; x = 1 + +E40.py:77:16: E401 [*] Multiple imports on one line + | +75 | import builtins, textwrap as tw +76 | +77 | x = 1; import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +78 | import re as regex, string; x = 1 + | + = help: Split imports + +ℹ Safe fix +74 74 | def nested_and_tested(): +75 75 | import builtins, textwrap as tw +76 76 | +77 |- x = 1; import re as regex, string + 77 |+ x = 1; import re as regex; import string +78 78 | import re as regex, string; x = 1 +79 79 | +80 80 | if True: import re as regex, string + +E40.py:78:9: E401 [*] Multiple imports on one line + | +77 | x = 1; import re as regex, string +78 | import re as regex, string; x = 1 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 +79 | +80 | if True: import re as regex, string + | + = help: Split imports + +ℹ Safe fix +75 75 | import builtins, textwrap as tw +76 76 | +77 77 | x = 1; import re as regex, string +78 |- import re as regex, string; x = 1 + 78 |+ import re as regex; import string; x = 1 +79 79 | +80 80 | if True: import re as regex, string + +E40.py:80:14: E401 [*] Multiple imports on one line + | +78 | import re as regex, string; x = 1 +79 | +80 | if True: import re as regex, string + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ E401 + | + = help: Split imports + +ℹ Safe fix +77 77 | x = 1; import re as regex, string +78 78 | import re as regex, string; x = 1 +79 79 | +80 |- if True: import re as regex, string + 80 |+ if True: import re as regex; import string + + From a1f3cda19082d4075b13d161d1299142b1e63ce2 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Sun, 21 Jan 2024 19:10:43 -0500 Subject: [PATCH 10/31] Include global `--config` when determining namespace packages (#9603) ## Summary When determining whether _any_ settings have namespace packages, we need to consider the global settings (as would be provided via `--config`). This was a subtle fallout of a refactor. Closes https://github.com/astral-sh/ruff/issues/9579. ## Test Plan Tested locally by compiling Ruff and running against this [namespace-test](https://github.com/gokay05/namespace-test) repo. --- crates/ruff_workspace/src/resolver.rs | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/crates/ruff_workspace/src/resolver.rs b/crates/ruff_workspace/src/resolver.rs index d9bd592059672..e8603226238e1 100644 --- a/crates/ruff_workspace/src/resolver.rs +++ b/crates/ruff_workspace/src/resolver.rs @@ -173,8 +173,7 @@ impl<'a> Resolver<'a> { // Determine whether any of the settings require namespace packages. If not, we can save // a lookup for every file. let has_namespace_packages = self - .settings - .values() + .settings() .any(|settings| !settings.linter.namespace_packages.is_empty()); // Search for the package root for each file. From 1e4b421a0099ac792003c8755fabc61130775360 Mon Sep 17 00:00:00 2001 From: Tom Kuson Date: Mon, 22 Jan 2024 00:22:02 +0000 Subject: [PATCH 11/31] [`ruff`] Implement `mutable-fromkeys-value` (`RUF024`) (#9597) ## Summary Implement rule `mutable-fromkeys-value` (`RUF023`). Autofixes ```python dict.fromkeys(foo, []) ``` to ```python {key: [] for key in foo} ``` The fix is marked as unsafe as it changes runtime behaviour. It also uses `key` as the comprehension variable, which may not always be desired. Closes #4613. ## Test Plan `cargo test` --- .../resources/test/fixtures/ruff/RUF024.py | 32 +++++ .../src/checkers/ast/analyze/expression.rs | 3 + crates/ruff_linter/src/codes.rs | 1 + crates/ruff_linter/src/rules/ruff/mod.rs | 1 + .../ruff_linter/src/rules/ruff/rules/mod.rs | 2 + .../ruff/rules/mutable_fromkeys_value.rs | 127 +++++++++++++++++ ..._rules__ruff__tests__RUF024_RUF024.py.snap | 128 ++++++++++++++++++ ruff.schema.json | 1 + 8 files changed, 295 insertions(+) create mode 100644 crates/ruff_linter/resources/test/fixtures/ruff/RUF024.py create mode 100644 crates/ruff_linter/src/rules/ruff/rules/mutable_fromkeys_value.rs create mode 100644 crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF024_RUF024.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/ruff/RUF024.py b/crates/ruff_linter/resources/test/fixtures/ruff/RUF024.py new file mode 100644 index 0000000000000..83875f4714d6a --- /dev/null +++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF024.py @@ -0,0 +1,32 @@ +pierogi_fillings = [ + "cabbage", + "strawberry", + "cheese", + "blueberry", +] + +# Errors. +dict.fromkeys(pierogi_fillings, []) +dict.fromkeys(pierogi_fillings, list()) +dict.fromkeys(pierogi_fillings, {}) +dict.fromkeys(pierogi_fillings, set()) +dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) +dict.fromkeys(pierogi_fillings, dict()) + +# Okay. +dict.fromkeys(pierogi_fillings) +dict.fromkeys(pierogi_fillings, None) +dict.fromkeys(pierogi_fillings, 1) +dict.fromkeys(pierogi_fillings) +dict.fromkeys(pierogi_fillings, ("blessed", "tuples", "don't", "mutate")) +dict.fromkeys(pierogi_fillings, "neither do strings") + +class MysteryBox: ... + +dict.fromkeys(pierogi_fillings, MysteryBox) +bar.fromkeys(pierogi_fillings, []) + + +def bad_dict() -> None: + dict = MysteryBox() + dict.fromkeys(pierogi_fillings, []) diff --git a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs index 75ee29c6ea5d0..7f83db9f250b3 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs @@ -977,6 +977,9 @@ pub(crate) fn expression(expr: &Expr, checker: &mut Checker) { if checker.enabled(Rule::SslInsecureVersion) { flake8_bandit::rules::ssl_insecure_version(checker, call); } + if checker.enabled(Rule::MutableFromkeysValue) { + ruff::rules::mutable_fromkeys_value(checker, call); + } if checker.enabled(Rule::UnsortedDunderAll) { ruff::rules::sort_dunder_all_extend_call(checker, call); } diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs index 40bbdabb659a3..f050700a79b17 100644 --- a/crates/ruff_linter/src/codes.rs +++ b/crates/ruff_linter/src/codes.rs @@ -926,6 +926,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> { (Ruff, "020") => (RuleGroup::Preview, rules::ruff::rules::NeverUnion), (Ruff, "021") => (RuleGroup::Preview, rules::ruff::rules::ParenthesizeChainedOperators), (Ruff, "022") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderAll), + (Ruff, "024") => (RuleGroup::Preview, rules::ruff::rules::MutableFromkeysValue), (Ruff, "100") => (RuleGroup::Stable, rules::ruff::rules::UnusedNOQA), (Ruff, "200") => (RuleGroup::Stable, rules::ruff::rules::InvalidPyprojectToml), diff --git a/crates/ruff_linter/src/rules/ruff/mod.rs b/crates/ruff_linter/src/rules/ruff/mod.rs index d4eddf142ed95..6c69271138aea 100644 --- a/crates/ruff_linter/src/rules/ruff/mod.rs +++ b/crates/ruff_linter/src/rules/ruff/mod.rs @@ -43,6 +43,7 @@ mod tests { #[test_case(Rule::NeverUnion, Path::new("RUF020.py"))] #[test_case(Rule::ParenthesizeChainedOperators, Path::new("RUF021.py"))] #[test_case(Rule::UnsortedDunderAll, Path::new("RUF022.py"))] + #[test_case(Rule::MutableFromkeysValue, Path::new("RUF024.py"))] fn rules(rule_code: Rule, path: &Path) -> Result<()> { let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy()); let diagnostics = test_path( diff --git a/crates/ruff_linter/src/rules/ruff/rules/mod.rs b/crates/ruff_linter/src/rules/ruff/rules/mod.rs index 07f55e184b1ad..b73c614e64b5d 100644 --- a/crates/ruff_linter/src/rules/ruff/rules/mod.rs +++ b/crates/ruff_linter/src/rules/ruff/rules/mod.rs @@ -9,6 +9,7 @@ pub(crate) use invalid_index_type::*; pub(crate) use invalid_pyproject_toml::*; pub(crate) use mutable_class_default::*; pub(crate) use mutable_dataclass_default::*; +pub(crate) use mutable_fromkeys_value::*; pub(crate) use never_union::*; pub(crate) use pairwise_over_zipped::*; pub(crate) use parenthesize_logical_operators::*; @@ -32,6 +33,7 @@ mod invalid_index_type; mod invalid_pyproject_toml; mod mutable_class_default; mod mutable_dataclass_default; +mod mutable_fromkeys_value; mod never_union; mod pairwise_over_zipped; mod parenthesize_logical_operators; diff --git a/crates/ruff_linter/src/rules/ruff/rules/mutable_fromkeys_value.rs b/crates/ruff_linter/src/rules/ruff/rules/mutable_fromkeys_value.rs new file mode 100644 index 0000000000000..aecca48562480 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/rules/mutable_fromkeys_value.rs @@ -0,0 +1,127 @@ +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::{self as ast, Expr}; +use ruff_python_semantic::analyze::typing::is_mutable_expr; + +use ruff_python_codegen::Generator; +use ruff_text_size::Ranged; +use ruff_text_size::TextRange; + +use crate::checkers::ast::Checker; + +/// ## What it does +/// Checks for mutable objects passed as a value argument to `dict.fromkeys`. +/// +/// ## Why is this bad? +/// All values in the dictionary created by the `dict.fromkeys` method +/// refer to the same instance of the provided object. If that object is +/// modified, all values are modified, which can lead to unexpected behavior. +/// For example, if the empty list (`[]`) is provided as the default value, +/// all values in the dictionary will use the same list; as such, appending to +/// any one entry will append to all entries. +/// +/// Instead, use a comprehension to generate a dictionary with distinct +/// instances of the default value. +/// +/// ## Example +/// ```python +/// cities = dict.fromkeys(["UK", "Poland"], []) +/// cities["UK"].append("London") +/// cities["Poland"].append("Poznan") +/// print(cities) # {'UK': ['London', 'Poznan'], 'Poland': ['London', 'Poznan']} +/// ``` +/// +/// Use instead: +/// ```python +/// cities = {country: [] for country in ["UK", "Poland"]} +/// cities["UK"].append("London") +/// cities["Poland"].append("Poznan") +/// print(cities) # {'UK': ['London'], 'Poland': ['Poznan']} +/// ``` +/// +/// ## Fix safety +/// This rule's fix is marked as unsafe, as the edit will change the behavior of +/// the program by using a distinct object for every value in the dictionary, +/// rather than a shared mutable instance. In some cases, programs may rely on +/// the previous behavior. +/// +/// ## References +/// - [Python documentation: `dict.fromkeys`](https://docs.python.org/3/library/stdtypes.html#dict.fromkeys) +#[violation] +pub struct MutableFromkeysValue; + +impl Violation for MutableFromkeysValue { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; + + #[derive_message_formats] + fn message(&self) -> String { + format!("Do not pass mutable objects as values to `dict.fromkeys`") + } + + fn fix_title(&self) -> Option { + Some("Replace with comprehension".to_string()) + } +} + +/// RUF024 +pub(crate) fn mutable_fromkeys_value(checker: &mut Checker, call: &ast::ExprCall) { + let Expr::Attribute(ast::ExprAttribute { value, attr, .. }) = call.func.as_ref() else { + return; + }; + + // Check that the call is to `dict.fromkeys`. + if attr != "fromkeys" { + return; + } + let Some(name_expr) = value.as_name_expr() else { + return; + }; + if name_expr.id != "dict" { + return; + } + if !checker.semantic().is_builtin("dict") { + return; + } + + // Check that the value parameter is a mutable object. + let [keys, value] = call.arguments.args.as_slice() else { + return; + }; + if !is_mutable_expr(value, checker.semantic()) { + return; + } + + let mut diagnostic = Diagnostic::new(MutableFromkeysValue, call.range()); + diagnostic.set_fix(Fix::unsafe_edit(Edit::range_replacement( + generate_dict_comprehension(keys, value, checker.generator()), + call.range(), + ))); + checker.diagnostics.push(diagnostic); +} + +/// Format a code snippet to expression `{key: value for key in keys}`, where +/// `keys` and `value` are the parameters of `dict.fromkeys`. +fn generate_dict_comprehension(keys: &Expr, value: &Expr, generator: Generator) -> String { + // Construct `key`. + let key = ast::ExprName { + id: "key".to_string(), + ctx: ast::ExprContext::Load, + range: TextRange::default(), + }; + // Construct `key in keys`. + let comp = ast::Comprehension { + target: key.clone().into(), + iter: keys.clone(), + ifs: vec![], + range: TextRange::default(), + is_async: false, + }; + // Construct the dict comprehension. + let dict_comp = ast::ExprDictComp { + key: Box::new(key.into()), + value: Box::new(value.clone()), + generators: vec![comp], + range: TextRange::default(), + }; + generator.expr(&dict_comp.into()) +} diff --git a/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF024_RUF024.py.snap b/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF024_RUF024.py.snap new file mode 100644 index 0000000000000..0de5a384ad227 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF024_RUF024.py.snap @@ -0,0 +1,128 @@ +--- +source: crates/ruff_linter/src/rules/ruff/mod.rs +--- +RUF024.py:9:1: RUF024 [*] Do not pass mutable objects as values to `dict.fromkeys` + | + 8 | # Errors. + 9 | dict.fromkeys(pierogi_fillings, []) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF024 +10 | dict.fromkeys(pierogi_fillings, list()) +11 | dict.fromkeys(pierogi_fillings, {}) + | + = help: Replace with comprehension + +ℹ Unsafe fix +6 6 | ] +7 7 | +8 8 | # Errors. +9 |-dict.fromkeys(pierogi_fillings, []) + 9 |+{key: [] for key in pierogi_fillings} +10 10 | dict.fromkeys(pierogi_fillings, list()) +11 11 | dict.fromkeys(pierogi_fillings, {}) +12 12 | dict.fromkeys(pierogi_fillings, set()) + +RUF024.py:10:1: RUF024 [*] Do not pass mutable objects as values to `dict.fromkeys` + | + 8 | # Errors. + 9 | dict.fromkeys(pierogi_fillings, []) +10 | dict.fromkeys(pierogi_fillings, list()) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF024 +11 | dict.fromkeys(pierogi_fillings, {}) +12 | dict.fromkeys(pierogi_fillings, set()) + | + = help: Replace with comprehension + +ℹ Unsafe fix +7 7 | +8 8 | # Errors. +9 9 | dict.fromkeys(pierogi_fillings, []) +10 |-dict.fromkeys(pierogi_fillings, list()) + 10 |+{key: list() for key in pierogi_fillings} +11 11 | dict.fromkeys(pierogi_fillings, {}) +12 12 | dict.fromkeys(pierogi_fillings, set()) +13 13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) + +RUF024.py:11:1: RUF024 [*] Do not pass mutable objects as values to `dict.fromkeys` + | + 9 | dict.fromkeys(pierogi_fillings, []) +10 | dict.fromkeys(pierogi_fillings, list()) +11 | dict.fromkeys(pierogi_fillings, {}) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF024 +12 | dict.fromkeys(pierogi_fillings, set()) +13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) + | + = help: Replace with comprehension + +ℹ Unsafe fix +8 8 | # Errors. +9 9 | dict.fromkeys(pierogi_fillings, []) +10 10 | dict.fromkeys(pierogi_fillings, list()) +11 |-dict.fromkeys(pierogi_fillings, {}) + 11 |+{key: {} for key in pierogi_fillings} +12 12 | dict.fromkeys(pierogi_fillings, set()) +13 13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) +14 14 | dict.fromkeys(pierogi_fillings, dict()) + +RUF024.py:12:1: RUF024 [*] Do not pass mutable objects as values to `dict.fromkeys` + | +10 | dict.fromkeys(pierogi_fillings, list()) +11 | dict.fromkeys(pierogi_fillings, {}) +12 | dict.fromkeys(pierogi_fillings, set()) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF024 +13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) +14 | dict.fromkeys(pierogi_fillings, dict()) + | + = help: Replace with comprehension + +ℹ Unsafe fix +9 9 | dict.fromkeys(pierogi_fillings, []) +10 10 | dict.fromkeys(pierogi_fillings, list()) +11 11 | dict.fromkeys(pierogi_fillings, {}) +12 |-dict.fromkeys(pierogi_fillings, set()) + 12 |+{key: set() for key in pierogi_fillings} +13 13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) +14 14 | dict.fromkeys(pierogi_fillings, dict()) +15 15 | + +RUF024.py:13:1: RUF024 [*] Do not pass mutable objects as values to `dict.fromkeys` + | +11 | dict.fromkeys(pierogi_fillings, {}) +12 | dict.fromkeys(pierogi_fillings, set()) +13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF024 +14 | dict.fromkeys(pierogi_fillings, dict()) + | + = help: Replace with comprehension + +ℹ Unsafe fix +10 10 | dict.fromkeys(pierogi_fillings, list()) +11 11 | dict.fromkeys(pierogi_fillings, {}) +12 12 | dict.fromkeys(pierogi_fillings, set()) +13 |-dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) + 13 |+{key: {"pre": "populated!"} for key in pierogi_fillings} +14 14 | dict.fromkeys(pierogi_fillings, dict()) +15 15 | +16 16 | # Okay. + +RUF024.py:14:1: RUF024 [*] Do not pass mutable objects as values to `dict.fromkeys` + | +12 | dict.fromkeys(pierogi_fillings, set()) +13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) +14 | dict.fromkeys(pierogi_fillings, dict()) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF024 +15 | +16 | # Okay. + | + = help: Replace with comprehension + +ℹ Unsafe fix +11 11 | dict.fromkeys(pierogi_fillings, {}) +12 12 | dict.fromkeys(pierogi_fillings, set()) +13 13 | dict.fromkeys(pierogi_fillings, {"pre": "populated!"}) +14 |-dict.fromkeys(pierogi_fillings, dict()) + 14 |+{key: dict() for key in pierogi_fillings} +15 15 | +16 16 | # Okay. +17 17 | dict.fromkeys(pierogi_fillings) + + diff --git a/ruff.schema.json b/ruff.schema.json index 9ea851bd26b54..edafa4acf6ef3 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -3449,6 +3449,7 @@ "RUF020", "RUF021", "RUF022", + "RUF024", "RUF1", "RUF10", "RUF100", From e54ed28ba9527486d4ecf749c572a54c0c2541d6 Mon Sep 17 00:00:00 2001 From: Steve C Date: Sun, 21 Jan 2024 19:53:15 -0500 Subject: [PATCH 12/31] [`pylint`] Add fix for `collapsible-else-if` (`PLR5501`) (#9594) ## Summary adds a fix for `collapsible-else-if` / `PLR5501` ## Test Plan `cargo test` --- .../fixtures/pylint/collapsible_else_if.py | 36 ++++ .../src/checkers/ast/analyze/statement.rs | 12 +- crates/ruff_linter/src/rules/pylint/mod.rs | 1 + .../rules/pylint/rules/collapsible_else_if.rs | 97 +++++++-- ...tests__PLR5501_collapsible_else_if.py.snap | 69 ++++++- ...eview__PLR5501_collapsible_else_if.py.snap | 195 ++++++++++++++++++ 6 files changed, 377 insertions(+), 33 deletions(-) create mode 100644 crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLR5501_collapsible_else_if.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/pylint/collapsible_else_if.py b/crates/ruff_linter/resources/test/fixtures/pylint/collapsible_else_if.py index fb00f5d329a6e..7848b2c05725d 100644 --- a/crates/ruff_linter/resources/test/fixtures/pylint/collapsible_else_if.py +++ b/crates/ruff_linter/resources/test/fixtures/pylint/collapsible_else_if.py @@ -49,6 +49,17 @@ def not_ok1(): pass +def not_ok1_with_comments(): + if 1: + pass + else: + # inner comment + if 2: + pass + else: + pass # final pass comment + + # Regression test for https://github.com/apache/airflow/blob/f1e1cdcc3b2826e68ba133f350300b5065bbca33/airflow/models/dag.py#L1737 def not_ok2(): if True: @@ -61,3 +72,28 @@ def not_ok2(): else: print(4) + +def not_ok3(): + if 1: + pass + else: + if 2: pass + else: pass + + +def not_ok4(): + if 1: + pass + else: + if 2: pass + else: + pass + + +def not_ok5(): + if 1: + pass + else: + if 2: + pass + else: pass diff --git a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs index c31f147997663..67b8f209b3d8f 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs @@ -1069,13 +1069,7 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { ruff::rules::sort_dunder_all_aug_assign(checker, aug_assign); } } - Stmt::If( - if_ @ ast::StmtIf { - test, - elif_else_clauses, - .. - }, - ) => { + Stmt::If(if_ @ ast::StmtIf { test, .. }) => { if checker.enabled(Rule::EmptyTypeCheckingBlock) { if typing::is_type_checking_block(if_, &checker.semantic) { flake8_type_checking::rules::empty_type_checking_block(checker, if_); @@ -1117,9 +1111,7 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { pyupgrade::rules::outdated_version_block(checker, if_); } if checker.enabled(Rule::CollapsibleElseIf) { - if let Some(diagnostic) = pylint::rules::collapsible_else_if(elif_else_clauses) { - checker.diagnostics.push(diagnostic); - } + pylint::rules::collapsible_else_if(checker, stmt); } if checker.enabled(Rule::CheckAndRemoveFromSet) { refurb::rules::check_and_remove_from_set(checker, if_); diff --git a/crates/ruff_linter/src/rules/pylint/mod.rs b/crates/ruff_linter/src/rules/pylint/mod.rs index bf5bce4a353e3..5786e857f96b9 100644 --- a/crates/ruff_linter/src/rules/pylint/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/mod.rs @@ -193,6 +193,7 @@ mod tests { } #[test_case(Rule::UselessElseOnLoop, Path::new("useless_else_on_loop.py"))] + #[test_case(Rule::CollapsibleElseIf, Path::new("collapsible_else_if.py"))] fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> { let snapshot = format!( "preview__{}_{}", diff --git a/crates/ruff_linter/src/rules/pylint/rules/collapsible_else_if.rs b/crates/ruff_linter/src/rules/pylint/rules/collapsible_else_if.rs index 3cee804326cef..675e24351bfbb 100644 --- a/crates/ruff_linter/src/rules/pylint/rules/collapsible_else_if.rs +++ b/crates/ruff_linter/src/rules/pylint/rules/collapsible_else_if.rs @@ -1,8 +1,15 @@ -use ruff_python_ast::{ElifElseClause, Stmt}; -use ruff_text_size::{Ranged, TextRange}; +use anyhow::Result; -use ruff_diagnostics::{Diagnostic, Violation}; +use ast::whitespace::indentation; +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::{self as ast, ElifElseClause, Stmt}; +use ruff_python_codegen::Stylist; +use ruff_source_file::Locator; +use ruff_text_size::{Ranged, TextRange}; + +use crate::checkers::ast::Checker; +use crate::rules::pyupgrade::fixes::adjust_indentation; /// ## What it does /// Checks for `else` blocks that consist of a single `if` statement. @@ -40,27 +47,85 @@ use ruff_macros::{derive_message_formats, violation}; pub struct CollapsibleElseIf; impl Violation for CollapsibleElseIf { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; + #[derive_message_formats] fn message(&self) -> String { format!("Use `elif` instead of `else` then `if`, to reduce indentation") } + + fn fix_title(&self) -> Option { + Some("Convert to `elif`".to_string()) + } } /// PLR5501 -pub(crate) fn collapsible_else_if(elif_else_clauses: &[ElifElseClause]) -> Option { - let Some(ElifElseClause { - body, - test: None, - range, - }) = elif_else_clauses.last() +pub(crate) fn collapsible_else_if(checker: &mut Checker, stmt: &Stmt) { + let Stmt::If(ast::StmtIf { + elif_else_clauses, .. + }) = stmt else { - return None; + return; }; - if let [first @ Stmt::If(_)] = body.as_slice() { - return Some(Diagnostic::new( - CollapsibleElseIf, - TextRange::new(range.start(), first.start()), - )); + + let Some( + else_clause @ ElifElseClause { + body, test: None, .. + }, + ) = elif_else_clauses.last() + else { + return; + }; + let [first @ Stmt::If(ast::StmtIf { .. })] = body.as_slice() else { + return; + }; + + let mut diagnostic = Diagnostic::new( + CollapsibleElseIf, + TextRange::new(else_clause.start(), first.start()), + ); + + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| { + convert_to_elif(first, else_clause, checker.locator(), checker.stylist()) + }); } - None + + checker.diagnostics.push(diagnostic); +} + +/// Generate [`Fix`] to convert an `else` block to an `elif` block. +fn convert_to_elif( + first: &Stmt, + else_clause: &ElifElseClause, + locator: &Locator, + stylist: &Stylist, +) -> Result { + let inner_if_line_start = locator.line_start(first.start()); + let inner_if_line_end = locator.line_end(first.end()); + + // Identify the indentation of the loop itself (e.g., the `while` or `for`). + let Some(indentation) = indentation(locator, else_clause) else { + return Err(anyhow::anyhow!("`else` is expected to be on its own line")); + }; + + // Dedent the content from the end of the `else` to the end of the `if`. + let indented = adjust_indentation( + TextRange::new(inner_if_line_start, inner_if_line_end), + indentation, + locator, + stylist, + )?; + + // Strip the indent from the first line of the `if` statement, and add `el` to the start. + let Some(unindented) = indented.strip_prefix(indentation) else { + return Err(anyhow::anyhow!("indented block to start with indentation")); + }; + let indented = format!("{indentation}el{unindented}"); + + Ok(Fix::safe_edit(Edit::replacement( + indented, + locator.line_start(else_clause.start()), + inner_if_line_end, + ))) } diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR5501_collapsible_else_if.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR5501_collapsible_else_if.py.snap index 0d369bcb0492f..b936ba56a2771 100644 --- a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR5501_collapsible_else_if.py.snap +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR5501_collapsible_else_if.py.snap @@ -11,6 +11,7 @@ collapsible_else_if.py:37:5: PLR5501 Use `elif` instead of `else` then `if`, to | |________^ PLR5501 39 | pass | + = help: Convert to `elif` collapsible_else_if.py:45:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation | @@ -23,17 +24,71 @@ collapsible_else_if.py:45:5: PLR5501 Use `elif` instead of `else` then `if`, to 47 | pass 48 | else: | + = help: Convert to `elif` -collapsible_else_if.py:58:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation +collapsible_else_if.py:55:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation | -56 | elif True: -57 | print(2) -58 | else: +53 | if 1: +54 | pass +55 | else: | _____^ -59 | | if True: +56 | | # inner comment +57 | | if 2: | |________^ PLR5501 -60 | print(3) -61 | else: +58 | pass +59 | else: | + = help: Convert to `elif` + +collapsible_else_if.py:69:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation + | +67 | elif True: +68 | print(2) +69 | else: + | _____^ +70 | | if True: + | |________^ PLR5501 +71 | print(3) +72 | else: + | + = help: Convert to `elif` + +collapsible_else_if.py:79:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation + | +77 | if 1: +78 | pass +79 | else: + | _____^ +80 | | if 2: pass + | |________^ PLR5501 +81 | else: pass + | + = help: Convert to `elif` + +collapsible_else_if.py:87:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation + | +85 | if 1: +86 | pass +87 | else: + | _____^ +88 | | if 2: pass + | |________^ PLR5501 +89 | else: +90 | pass + | + = help: Convert to `elif` + +collapsible_else_if.py:96:5: PLR5501 Use `elif` instead of `else` then `if`, to reduce indentation + | +94 | if 1: +95 | pass +96 | else: + | _____^ +97 | | if 2: + | |________^ PLR5501 +98 | pass +99 | else: pass + | + = help: Convert to `elif` diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLR5501_collapsible_else_if.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLR5501_collapsible_else_if.py.snap new file mode 100644 index 0000000000000..4d13e11126c9a --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__preview__PLR5501_collapsible_else_if.py.snap @@ -0,0 +1,195 @@ +--- +source: crates/ruff_linter/src/rules/pylint/mod.rs +--- +collapsible_else_if.py:37:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +35 | if 1: +36 | pass +37 | else: + | _____^ +38 | | if 2: + | |________^ PLR5501 +39 | pass + | + = help: Convert to `elif` + +ℹ Safe fix +34 34 | def not_ok0(): +35 35 | if 1: +36 36 | pass +37 |- else: +38 |- if 2: +39 |- pass + 37 |+ elif 2: + 38 |+ pass +40 39 | +41 40 | +42 41 | def not_ok1(): + +collapsible_else_if.py:45:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +43 | if 1: +44 | pass +45 | else: + | _____^ +46 | | if 2: + | |________^ PLR5501 +47 | pass +48 | else: + | + = help: Convert to `elif` + +ℹ Safe fix +42 42 | def not_ok1(): +43 43 | if 1: +44 44 | pass + 45 |+ elif 2: + 46 |+ pass +45 47 | else: +46 |- if 2: +47 |- pass +48 |- else: +49 |- pass + 48 |+ pass +50 49 | +51 50 | +52 51 | def not_ok1_with_comments(): + +collapsible_else_if.py:55:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +53 | if 1: +54 | pass +55 | else: + | _____^ +56 | | # inner comment +57 | | if 2: + | |________^ PLR5501 +58 | pass +59 | else: + | + = help: Convert to `elif` + +ℹ Safe fix +52 52 | def not_ok1_with_comments(): +53 53 | if 1: +54 54 | pass + 55 |+ elif 2: + 56 |+ pass +55 57 | else: +56 |- # inner comment +57 |- if 2: +58 |- pass +59 |- else: +60 |- pass # final pass comment + 58 |+ pass # final pass comment +61 59 | +62 60 | +63 61 | # Regression test for https://github.com/apache/airflow/blob/f1e1cdcc3b2826e68ba133f350300b5065bbca33/airflow/models/dag.py#L1737 + +collapsible_else_if.py:69:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +67 | elif True: +68 | print(2) +69 | else: + | _____^ +70 | | if True: + | |________^ PLR5501 +71 | print(3) +72 | else: + | + = help: Convert to `elif` + +ℹ Safe fix +66 66 | print(1) +67 67 | elif True: +68 68 | print(2) + 69 |+ elif True: + 70 |+ print(3) +69 71 | else: +70 |- if True: +71 |- print(3) +72 |- else: +73 |- print(4) + 72 |+ print(4) +74 73 | +75 74 | +76 75 | def not_ok3(): + +collapsible_else_if.py:79:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +77 | if 1: +78 | pass +79 | else: + | _____^ +80 | | if 2: pass + | |________^ PLR5501 +81 | else: pass + | + = help: Convert to `elif` + +ℹ Safe fix +76 76 | def not_ok3(): +77 77 | if 1: +78 78 | pass +79 |- else: +80 |- if 2: pass +81 |- else: pass + 79 |+ elif 2: pass + 80 |+ else: pass +82 81 | +83 82 | +84 83 | def not_ok4(): + +collapsible_else_if.py:87:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +85 | if 1: +86 | pass +87 | else: + | _____^ +88 | | if 2: pass + | |________^ PLR5501 +89 | else: +90 | pass + | + = help: Convert to `elif` + +ℹ Safe fix +84 84 | def not_ok4(): +85 85 | if 1: +86 86 | pass + 87 |+ elif 2: pass +87 88 | else: +88 |- if 2: pass +89 |- else: +90 |- pass + 89 |+ pass +91 90 | +92 91 | +93 92 | def not_ok5(): + +collapsible_else_if.py:96:5: PLR5501 [*] Use `elif` instead of `else` then `if`, to reduce indentation + | +94 | if 1: +95 | pass +96 | else: + | _____^ +97 | | if 2: + | |________^ PLR5501 +98 | pass +99 | else: pass + | + = help: Convert to `elif` + +ℹ Safe fix +93 93 | def not_ok5(): +94 94 | if 1: +95 95 | pass +96 |- else: +97 |- if 2: +98 |- pass +99 |- else: pass + 96 |+ elif 2: + 97 |+ pass + 98 |+ else: pass + + From 836e4406a5668c80142f5ccb23581cb7d4398c64 Mon Sep 17 00:00:00 2001 From: trag1c Date: Mon, 22 Jan 2024 04:57:34 +0100 Subject: [PATCH 13/31] Corrected code block hyperlink (#9602) ## Summary Apparently MkDocs doesn't like when reference-style links have formatting inside :)
Screenshots (before and after the change) 61353 15526
--- .../ruff_linter/src/rules/pylint/rules/import_private_name.rs | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/crates/ruff_linter/src/rules/pylint/rules/import_private_name.rs b/crates/ruff_linter/src/rules/pylint/rules/import_private_name.rs index 5163a754bea9f..29a94b924f0e5 100644 --- a/crates/ruff_linter/src/rules/pylint/rules/import_private_name.rs +++ b/crates/ruff_linter/src/rules/pylint/rules/import_private_name.rs @@ -39,8 +39,7 @@ use crate::checkers::ast::Checker; /// ``` /// /// ## Options -/// - [`namespace-packages`]: List of packages that are defined as namespace -/// packages. +/// - `namespace-packages` /// /// ## References /// - [PEP 8: Naming Conventions](https://peps.python.org/pep-0008/#naming-conventions) @@ -48,7 +47,6 @@ use crate::checkers::ast::Checker; /// /// [PEP 8]: https://www.python.org/dev/peps/pep-0008/ /// [PEP 420]: https://www.python.org/dev/peps/pep-0420/ -/// [`namespace-packages`]: https://beta.ruff.rs/docs/settings/#namespace-packages #[violation] pub struct ImportPrivateName { name: String, From 9c8a4d927e3d36860b3b0dfcecec3732e093c8ab Mon Sep 17 00:00:00 2001 From: Steve C Date: Sun, 21 Jan 2024 23:37:18 -0500 Subject: [PATCH 14/31] [`flake8-simplify`] Add fix for `if-with-same-arms` (`SIM114`) (#9591) ## Summary add fix for `if-with-same-arms` / `SIM114` Also preserves comments! ## Test Plan `cargo test` --- .../test/fixtures/flake8_simplify/SIM114.py | 33 +- .../src/checkers/ast/analyze/statement.rs | 2 +- .../src/rules/flake8_simplify/mod.rs | 1 + .../rules/if_with_same_arms.rs | 106 ++++- ...ke8_simplify__tests__SIM114_SIM114.py.snap | 309 +++++++----- ...ify__tests__preview__SIM114_SIM114.py.snap | 446 ++++++++++++++++++ 6 files changed, 772 insertions(+), 125 deletions(-) create mode 100644 crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__preview__SIM114_SIM114.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM114.py b/crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM114.py index 180af6086dd7d..195efb85e9ff0 100644 --- a/crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM114.py +++ b/crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM114.py @@ -4,6 +4,11 @@ elif c: b +if a: # we preserve comments, too! + b +elif c: # but not on the second branch + b + if x == 1: for _ in range(20): print("hello") @@ -63,6 +68,10 @@ errors = 1 elif result.eofs == "E": errors = 1 +elif result.eofs == "X": + errors = 1 +elif result.eofs == "C": + errors = 1 # OK @@ -70,7 +79,7 @@ def complicated_calc(*arg, **kwargs): return 42 -def foo(p): +def func(p): if p == 2: return complicated_calc(microsecond=0) elif p == 3: @@ -103,7 +112,7 @@ def foo(p): x = 1 -def foo(): +def func(): a = True b = False if a > b: # end-of-line @@ -114,3 +123,23 @@ def foo(): return 4 elif b is None: return 4 + + +def func(): + """Ensure that the named expression is parenthesized when merged.""" + a = True + b = False + if a > b: # end-of-line + return 3 + elif a := 1: + return 3 + + +if a: # we preserve comments, too! + b +elif c: # but not on the second branch + b + + +if a: b # here's a comment +elif c: b diff --git a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs index 67b8f209b3d8f..b3a994593992f 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs @@ -1086,7 +1086,7 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { ); } if checker.enabled(Rule::IfWithSameArms) { - flake8_simplify::rules::if_with_same_arms(checker, checker.locator, if_); + flake8_simplify::rules::if_with_same_arms(checker, if_); } if checker.enabled(Rule::NeedlessBool) { flake8_simplify::rules::needless_bool(checker, if_); diff --git a/crates/ruff_linter/src/rules/flake8_simplify/mod.rs b/crates/ruff_linter/src/rules/flake8_simplify/mod.rs index 3c825ae16359b..c6b7526ec44f7 100644 --- a/crates/ruff_linter/src/rules/flake8_simplify/mod.rs +++ b/crates/ruff_linter/src/rules/flake8_simplify/mod.rs @@ -60,6 +60,7 @@ mod tests { #[test_case(Rule::YodaConditions, Path::new("SIM300.py"))] #[test_case(Rule::IfElseBlockInsteadOfDictGet, Path::new("SIM401.py"))] #[test_case(Rule::DictGetWithNoneDefault, Path::new("SIM910.py"))] + #[test_case(Rule::IfWithSameArms, Path::new("SIM114.py"))] fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> { let snapshot = format!( "preview__{}_{}", diff --git a/crates/ruff_linter/src/rules/flake8_simplify/rules/if_with_same_arms.rs b/crates/ruff_linter/src/rules/flake8_simplify/rules/if_with_same_arms.rs index 9ffc34b236a00..3b5be38e31641 100644 --- a/crates/ruff_linter/src/rules/flake8_simplify/rules/if_with_same_arms.rs +++ b/crates/ruff_linter/src/rules/flake8_simplify/rules/if_with_same_arms.rs @@ -1,8 +1,15 @@ -use ruff_diagnostics::{Diagnostic, Violation}; +use std::borrow::Cow; + +use anyhow::Result; + +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; use ruff_macros::{derive_message_formats, violation}; -use ruff_python_ast as ast; use ruff_python_ast::comparable::ComparableStmt; +use ruff_python_ast::parenthesize::parenthesized_range; use ruff_python_ast::stmt_if::{if_elif_branches, IfElifBranch}; +use ruff_python_ast::{self as ast, Expr}; +use ruff_python_index::Indexer; +use ruff_python_trivia::{SimpleTokenKind, SimpleTokenizer}; use ruff_source_file::Locator; use ruff_text_size::{Ranged, TextRange}; @@ -32,14 +39,20 @@ use crate::checkers::ast::Checker; pub struct IfWithSameArms; impl Violation for IfWithSameArms { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; + #[derive_message_formats] fn message(&self) -> String { format!("Combine `if` branches using logical `or` operator") } + + fn fix_title(&self) -> Option { + Some("Combine `if` branches".to_string()) + } } /// SIM114 -pub(crate) fn if_with_same_arms(checker: &mut Checker, locator: &Locator, stmt_if: &ast::StmtIf) { +pub(crate) fn if_with_same_arms(checker: &mut Checker, stmt_if: &ast::StmtIf) { let mut branches_iter = if_elif_branches(stmt_if).peekable(); while let Some(current_branch) = branches_iter.next() { let Some(following_branch) = branches_iter.peek() else { @@ -63,26 +76,101 @@ pub(crate) fn if_with_same_arms(checker: &mut Checker, locator: &Locator, stmt_i let first_comments = checker .indexer() .comment_ranges() - .comments_in_range(body_range(¤t_branch, locator)) + .comments_in_range(body_range(¤t_branch, checker.locator())) .iter() - .map(|range| locator.slice(*range)); + .map(|range| checker.locator().slice(*range)); let second_comments = checker .indexer() .comment_ranges() - .comments_in_range(body_range(following_branch, locator)) + .comments_in_range(body_range(following_branch, checker.locator())) .iter() - .map(|range| locator.slice(*range)); + .map(|range| checker.locator().slice(*range)); if !first_comments.eq(second_comments) { continue; } - checker.diagnostics.push(Diagnostic::new( + let mut diagnostic = Diagnostic::new( IfWithSameArms, TextRange::new(current_branch.start(), following_branch.end()), - )); + ); + + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| { + merge_branches( + stmt_if, + ¤t_branch, + following_branch, + checker.locator(), + checker.indexer(), + ) + }); + } + + checker.diagnostics.push(diagnostic); } } +/// Generate a [`Fix`] to merge two [`IfElifBranch`] branches. +fn merge_branches( + stmt_if: &ast::StmtIf, + current_branch: &IfElifBranch, + following_branch: &IfElifBranch, + locator: &Locator, + indexer: &Indexer, +) -> Result { + // Identify the colon (`:`) at the end of the current branch's test. + let Some(current_branch_colon) = + SimpleTokenizer::starts_at(current_branch.test.end(), locator.contents()) + .find(|token| token.kind == SimpleTokenKind::Colon) + else { + return Err(anyhow::anyhow!("Expected colon after test")); + }; + + let mut following_branch_tokenizer = + SimpleTokenizer::starts_at(following_branch.test.end(), locator.contents()); + + // Identify the colon (`:`) at the end of the following branch's test. + let Some(following_branch_colon) = + following_branch_tokenizer.find(|token| token.kind == SimpleTokenKind::Colon) + else { + return Err(anyhow::anyhow!("Expected colon after test")); + }; + + let main_edit = Edit::deletion( + locator.full_line_end(current_branch_colon.end()), + locator.full_line_end(following_branch_colon.end()), + ); + + // If the test isn't parenthesized, consider parenthesizing it. + let following_branch_test = if let Some(range) = parenthesized_range( + following_branch.test.into(), + stmt_if.into(), + indexer.comment_ranges(), + locator.contents(), + ) { + Cow::Borrowed(locator.slice(range)) + } else if matches!( + following_branch.test, + Expr::BoolOp(ast::ExprBoolOp { + op: ast::BoolOp::Or, + .. + }) | Expr::Lambda(_) + | Expr::NamedExpr(_) + ) { + Cow::Owned(format!("({})", locator.slice(following_branch.test))) + } else { + Cow::Borrowed(locator.slice(following_branch.test)) + }; + + Ok(Fix::safe_edits( + main_edit, + [Edit::insertion( + format!(" or {following_branch_test}"), + current_branch_colon.start(), + )], + )) +} + /// Return the [`TextRange`] of an [`IfElifBranch`]'s body (from the end of the test to the end of /// the body). fn body_range(branch: &IfElifBranch, locator: &Locator) -> TextRange { diff --git a/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM114_SIM114.py.snap b/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM114_SIM114.py.snap index 48c0df9aad5c2..781dd3a54a424 100644 --- a/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM114_SIM114.py.snap +++ b/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM114_SIM114.py.snap @@ -10,158 +10,241 @@ SIM114.py:2:1: SIM114 Combine `if` branches using logical `or` operator 5 | | b | |_____^ SIM114 6 | -7 | if x == 1: +7 | if a: # we preserve comments, too! | + = help: Combine `if` branches SIM114.py:7:1: SIM114 Combine `if` branches using logical `or` operator | 5 | b 6 | - 7 | / if x == 1: - 8 | | for _ in range(20): - 9 | | print("hello") -10 | | elif x == 2: -11 | | for _ in range(20): -12 | | print("hello") + 7 | / if a: # we preserve comments, too! + 8 | | b + 9 | | elif c: # but not on the second branch +10 | | b + | |_____^ SIM114 +11 | +12 | if x == 1: + | + = help: Combine `if` branches + +SIM114.py:12:1: SIM114 Combine `if` branches using logical `or` operator + | +10 | b +11 | +12 | / if x == 1: +13 | | for _ in range(20): +14 | | print("hello") +15 | | elif x == 2: +16 | | for _ in range(20): +17 | | print("hello") | |______________________^ SIM114 -13 | -14 | if x == 1: - | - -SIM114.py:14:1: SIM114 Combine `if` branches using logical `or` operator - | -12 | print("hello") -13 | -14 | / if x == 1: -15 | | if True: -16 | | for _ in range(20): -17 | | print("hello") -18 | | elif x == 2: -19 | | if True: -20 | | for _ in range(20): -21 | | print("hello") - | |__________________________^ SIM114 -22 | -23 | if x == 1: +18 | +19 | if x == 1: | + = help: Combine `if` branches -SIM114.py:23:1: SIM114 Combine `if` branches using logical `or` operator +SIM114.py:19:1: SIM114 Combine `if` branches using logical `or` operator | -21 | print("hello") -22 | -23 | / if x == 1: +17 | print("hello") +18 | +19 | / if x == 1: +20 | | if True: +21 | | for _ in range(20): +22 | | print("hello") +23 | | elif x == 2: 24 | | if True: 25 | | for _ in range(20): 26 | | print("hello") -27 | | elif False: -28 | | for _ in range(20): -29 | | print("hello") -30 | | elif x == 2: -31 | | if True: -32 | | for _ in range(20): -33 | | print("hello") -34 | | elif False: -35 | | for _ in range(20): -36 | | print("hello") | |__________________________^ SIM114 -37 | -38 | if ( +27 | +28 | if x == 1: + | + = help: Combine `if` branches + +SIM114.py:28:1: SIM114 Combine `if` branches using logical `or` operator + | +26 | print("hello") +27 | +28 | / if x == 1: +29 | | if True: +30 | | for _ in range(20): +31 | | print("hello") +32 | | elif False: +33 | | for _ in range(20): +34 | | print("hello") +35 | | elif x == 2: +36 | | if True: +37 | | for _ in range(20): +38 | | print("hello") +39 | | elif False: +40 | | for _ in range(20): +41 | | print("hello") + | |__________________________^ SIM114 +42 | +43 | if ( | + = help: Combine `if` branches -SIM114.py:24:5: SIM114 Combine `if` branches using logical `or` operator +SIM114.py:29:5: SIM114 Combine `if` branches using logical `or` operator | -23 | if x == 1: -24 | if True: +28 | if x == 1: +29 | if True: | _____^ -25 | | for _ in range(20): -26 | | print("hello") -27 | | elif False: -28 | | for _ in range(20): -29 | | print("hello") +30 | | for _ in range(20): +31 | | print("hello") +32 | | elif False: +33 | | for _ in range(20): +34 | | print("hello") | |__________________________^ SIM114 -30 | elif x == 2: -31 | if True: +35 | elif x == 2: +36 | if True: | + = help: Combine `if` branches -SIM114.py:31:5: SIM114 Combine `if` branches using logical `or` operator +SIM114.py:36:5: SIM114 Combine `if` branches using logical `or` operator | -29 | print("hello") -30 | elif x == 2: -31 | if True: +34 | print("hello") +35 | elif x == 2: +36 | if True: | _____^ -32 | | for _ in range(20): -33 | | print("hello") -34 | | elif False: -35 | | for _ in range(20): -36 | | print("hello") +37 | | for _ in range(20): +38 | | print("hello") +39 | | elif False: +40 | | for _ in range(20): +41 | | print("hello") | |__________________________^ SIM114 -37 | -38 | if ( - | - -SIM114.py:38:1: SIM114 Combine `if` branches using logical `or` operator - | -36 | print("hello") -37 | -38 | / if ( -39 | | x == 1 -40 | | and y == 2 -41 | | and z == 3 -42 | | and a == 4 -43 | | and b == 5 -44 | | and c == 6 -45 | | and d == 7 -46 | | and e == 8 -47 | | and f == 9 -48 | | and g == 10 -49 | | and h == 11 -50 | | and i == 12 -51 | | and j == 13 -52 | | and k == 14 -53 | | ): -54 | | pass -55 | | elif 1 == 2: -56 | | pass +42 | +43 | if ( + | + = help: Combine `if` branches + +SIM114.py:43:1: SIM114 Combine `if` branches using logical `or` operator + | +41 | print("hello") +42 | +43 | / if ( +44 | | x == 1 +45 | | and y == 2 +46 | | and z == 3 +47 | | and a == 4 +48 | | and b == 5 +49 | | and c == 6 +50 | | and d == 7 +51 | | and e == 8 +52 | | and f == 9 +53 | | and g == 10 +54 | | and h == 11 +55 | | and i == 12 +56 | | and j == 13 +57 | | and k == 14 +58 | | ): +59 | | pass +60 | | elif 1 == 2: +61 | | pass | |________^ SIM114 -57 | -58 | if result.eofs == "O": +62 | +63 | if result.eofs == "O": + | + = help: Combine `if` branches + +SIM114.py:67:1: SIM114 Combine `if` branches using logical `or` operator + | +65 | elif result.eofs == "S": +66 | skipped = 1 +67 | / elif result.eofs == "F": +68 | | errors = 1 +69 | | elif result.eofs == "E": +70 | | errors = 1 + | |______________^ SIM114 +71 | elif result.eofs == "X": +72 | errors = 1 + | + = help: Combine `if` branches + +SIM114.py:69:1: SIM114 Combine `if` branches using logical `or` operator + | +67 | elif result.eofs == "F": +68 | errors = 1 +69 | / elif result.eofs == "E": +70 | | errors = 1 +71 | | elif result.eofs == "X": +72 | | errors = 1 + | |______________^ SIM114 +73 | elif result.eofs == "C": +74 | errors = 1 | + = help: Combine `if` branches -SIM114.py:62:1: SIM114 Combine `if` branches using logical `or` operator +SIM114.py:71:1: SIM114 Combine `if` branches using logical `or` operator | -60 | elif result.eofs == "S": -61 | skipped = 1 -62 | / elif result.eofs == "F": -63 | | errors = 1 -64 | | elif result.eofs == "E": -65 | | errors = 1 +69 | elif result.eofs == "E": +70 | errors = 1 +71 | / elif result.eofs == "X": +72 | | errors = 1 +73 | | elif result.eofs == "C": +74 | | errors = 1 | |______________^ SIM114 | + = help: Combine `if` branches + +SIM114.py:118:5: SIM114 Combine `if` branches using logical `or` operator + | +116 | a = True +117 | b = False +118 | if a > b: # end-of-line + | _____^ +119 | | return 3 +120 | | elif a == b: +121 | | return 3 + | |________________^ SIM114 +122 | elif a < b: # end-of-line +123 | return 4 + | + = help: Combine `if` branches -SIM114.py:109:5: SIM114 Combine `if` branches using logical `or` operator +SIM114.py:122:5: SIM114 Combine `if` branches using logical `or` operator | -107 | a = True -108 | b = False -109 | if a > b: # end-of-line +120 | elif a == b: +121 | return 3 +122 | elif a < b: # end-of-line | _____^ -110 | | return 3 -111 | | elif a == b: -112 | | return 3 +123 | | return 4 +124 | | elif b is None: +125 | | return 4 | |________________^ SIM114 -113 | elif a < b: # end-of-line -114 | return 4 | + = help: Combine `if` branches -SIM114.py:113:5: SIM114 Combine `if` branches using logical `or` operator +SIM114.py:132:5: SIM114 Combine `if` branches using logical `or` operator | -111 | elif a == b: -112 | return 3 -113 | elif a < b: # end-of-line +130 | a = True +131 | b = False +132 | if a > b: # end-of-line | _____^ -114 | | return 4 -115 | | elif b is None: -116 | | return 4 +133 | | return 3 +134 | | elif a := 1: +135 | | return 3 | |________________^ SIM114 | + = help: Combine `if` branches + +SIM114.py:138:1: SIM114 Combine `if` branches using logical `or` operator + | +138 | / if a: # we preserve comments, too! +139 | | b +140 | | elif c: # but not on the second branch +141 | | b + | |_____^ SIM114 + | + = help: Combine `if` branches + +SIM114.py:144:1: SIM114 Combine `if` branches using logical `or` operator + | +144 | / if a: b # here's a comment +145 | | elif c: b + | |_________^ SIM114 + | + = help: Combine `if` branches diff --git a/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__preview__SIM114_SIM114.py.snap b/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__preview__SIM114_SIM114.py.snap new file mode 100644 index 0000000000000..4f62aed944f70 --- /dev/null +++ b/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__preview__SIM114_SIM114.py.snap @@ -0,0 +1,446 @@ +--- +source: crates/ruff_linter/src/rules/flake8_simplify/mod.rs +--- +SIM114.py:2:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +1 | # Errors +2 | / if a: +3 | | b +4 | | elif c: +5 | | b + | |_____^ SIM114 +6 | +7 | if a: # we preserve comments, too! + | + = help: Combine `if` branches + +ℹ Safe fix +1 1 | # Errors +2 |-if a: +3 |- b +4 |-elif c: + 2 |+if a or c: +5 3 | b +6 4 | +7 5 | if a: # we preserve comments, too! + +SIM114.py:7:1: SIM114 [*] Combine `if` branches using logical `or` operator + | + 5 | b + 6 | + 7 | / if a: # we preserve comments, too! + 8 | | b + 9 | | elif c: # but not on the second branch +10 | | b + | |_____^ SIM114 +11 | +12 | if x == 1: + | + = help: Combine `if` branches + +ℹ Safe fix +4 4 | elif c: +5 5 | b +6 6 | +7 |-if a: # we preserve comments, too! +8 |- b +9 |-elif c: # but not on the second branch + 7 |+if a or c: # we preserve comments, too! +10 8 | b +11 9 | +12 10 | if x == 1: + +SIM114.py:12:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +10 | b +11 | +12 | / if x == 1: +13 | | for _ in range(20): +14 | | print("hello") +15 | | elif x == 2: +16 | | for _ in range(20): +17 | | print("hello") + | |______________________^ SIM114 +18 | +19 | if x == 1: + | + = help: Combine `if` branches + +ℹ Safe fix +9 9 | elif c: # but not on the second branch +10 10 | b +11 11 | +12 |-if x == 1: +13 |- for _ in range(20): +14 |- print("hello") +15 |-elif x == 2: + 12 |+if x == 1 or x == 2: +16 13 | for _ in range(20): +17 14 | print("hello") +18 15 | + +SIM114.py:19:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +17 | print("hello") +18 | +19 | / if x == 1: +20 | | if True: +21 | | for _ in range(20): +22 | | print("hello") +23 | | elif x == 2: +24 | | if True: +25 | | for _ in range(20): +26 | | print("hello") + | |__________________________^ SIM114 +27 | +28 | if x == 1: + | + = help: Combine `if` branches + +ℹ Safe fix +16 16 | for _ in range(20): +17 17 | print("hello") +18 18 | +19 |-if x == 1: +20 |- if True: +21 |- for _ in range(20): +22 |- print("hello") +23 |-elif x == 2: + 19 |+if x == 1 or x == 2: +24 20 | if True: +25 21 | for _ in range(20): +26 22 | print("hello") + +SIM114.py:28:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +26 | print("hello") +27 | +28 | / if x == 1: +29 | | if True: +30 | | for _ in range(20): +31 | | print("hello") +32 | | elif False: +33 | | for _ in range(20): +34 | | print("hello") +35 | | elif x == 2: +36 | | if True: +37 | | for _ in range(20): +38 | | print("hello") +39 | | elif False: +40 | | for _ in range(20): +41 | | print("hello") + | |__________________________^ SIM114 +42 | +43 | if ( + | + = help: Combine `if` branches + +ℹ Safe fix +25 25 | for _ in range(20): +26 26 | print("hello") +27 27 | +28 |-if x == 1: +29 |- if True: +30 |- for _ in range(20): +31 |- print("hello") +32 |- elif False: +33 |- for _ in range(20): +34 |- print("hello") +35 |-elif x == 2: + 28 |+if x == 1 or x == 2: +36 29 | if True: +37 30 | for _ in range(20): +38 31 | print("hello") + +SIM114.py:29:5: SIM114 [*] Combine `if` branches using logical `or` operator + | +28 | if x == 1: +29 | if True: + | _____^ +30 | | for _ in range(20): +31 | | print("hello") +32 | | elif False: +33 | | for _ in range(20): +34 | | print("hello") + | |__________________________^ SIM114 +35 | elif x == 2: +36 | if True: + | + = help: Combine `if` branches + +ℹ Safe fix +26 26 | print("hello") +27 27 | +28 28 | if x == 1: +29 |- if True: +30 |- for _ in range(20): +31 |- print("hello") +32 |- elif False: + 29 |+ if True or False: +33 30 | for _ in range(20): +34 31 | print("hello") +35 32 | elif x == 2: + +SIM114.py:36:5: SIM114 [*] Combine `if` branches using logical `or` operator + | +34 | print("hello") +35 | elif x == 2: +36 | if True: + | _____^ +37 | | for _ in range(20): +38 | | print("hello") +39 | | elif False: +40 | | for _ in range(20): +41 | | print("hello") + | |__________________________^ SIM114 +42 | +43 | if ( + | + = help: Combine `if` branches + +ℹ Safe fix +33 33 | for _ in range(20): +34 34 | print("hello") +35 35 | elif x == 2: +36 |- if True: +37 |- for _ in range(20): +38 |- print("hello") +39 |- elif False: + 36 |+ if True or False: +40 37 | for _ in range(20): +41 38 | print("hello") +42 39 | + +SIM114.py:43:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +41 | print("hello") +42 | +43 | / if ( +44 | | x == 1 +45 | | and y == 2 +46 | | and z == 3 +47 | | and a == 4 +48 | | and b == 5 +49 | | and c == 6 +50 | | and d == 7 +51 | | and e == 8 +52 | | and f == 9 +53 | | and g == 10 +54 | | and h == 11 +55 | | and i == 12 +56 | | and j == 13 +57 | | and k == 14 +58 | | ): +59 | | pass +60 | | elif 1 == 2: +61 | | pass + | |________^ SIM114 +62 | +63 | if result.eofs == "O": + | + = help: Combine `if` branches + +ℹ Safe fix +55 55 | and i == 12 +56 56 | and j == 13 +57 57 | and k == 14 +58 |-): +59 |- pass +60 |-elif 1 == 2: + 58 |+) or 1 == 2: +61 59 | pass +62 60 | +63 61 | if result.eofs == "O": + +SIM114.py:67:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +65 | elif result.eofs == "S": +66 | skipped = 1 +67 | / elif result.eofs == "F": +68 | | errors = 1 +69 | | elif result.eofs == "E": +70 | | errors = 1 + | |______________^ SIM114 +71 | elif result.eofs == "X": +72 | errors = 1 + | + = help: Combine `if` branches + +ℹ Safe fix +64 64 | pass +65 65 | elif result.eofs == "S": +66 66 | skipped = 1 +67 |-elif result.eofs == "F": +68 |- errors = 1 +69 |-elif result.eofs == "E": + 67 |+elif result.eofs == "F" or result.eofs == "E": +70 68 | errors = 1 +71 69 | elif result.eofs == "X": +72 70 | errors = 1 + +SIM114.py:69:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +67 | elif result.eofs == "F": +68 | errors = 1 +69 | / elif result.eofs == "E": +70 | | errors = 1 +71 | | elif result.eofs == "X": +72 | | errors = 1 + | |______________^ SIM114 +73 | elif result.eofs == "C": +74 | errors = 1 + | + = help: Combine `if` branches + +ℹ Safe fix +66 66 | skipped = 1 +67 67 | elif result.eofs == "F": +68 68 | errors = 1 +69 |-elif result.eofs == "E": +70 |- errors = 1 +71 |-elif result.eofs == "X": + 69 |+elif result.eofs == "E" or result.eofs == "X": +72 70 | errors = 1 +73 71 | elif result.eofs == "C": +74 72 | errors = 1 + +SIM114.py:71:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +69 | elif result.eofs == "E": +70 | errors = 1 +71 | / elif result.eofs == "X": +72 | | errors = 1 +73 | | elif result.eofs == "C": +74 | | errors = 1 + | |______________^ SIM114 + | + = help: Combine `if` branches + +ℹ Safe fix +68 68 | errors = 1 +69 69 | elif result.eofs == "E": +70 70 | errors = 1 +71 |-elif result.eofs == "X": +72 |- errors = 1 +73 |-elif result.eofs == "C": + 71 |+elif result.eofs == "X" or result.eofs == "C": +74 72 | errors = 1 +75 73 | +76 74 | + +SIM114.py:118:5: SIM114 [*] Combine `if` branches using logical `or` operator + | +116 | a = True +117 | b = False +118 | if a > b: # end-of-line + | _____^ +119 | | return 3 +120 | | elif a == b: +121 | | return 3 + | |________________^ SIM114 +122 | elif a < b: # end-of-line +123 | return 4 + | + = help: Combine `if` branches + +ℹ Safe fix +115 115 | def func(): +116 116 | a = True +117 117 | b = False +118 |- if a > b: # end-of-line +119 |- return 3 +120 |- elif a == b: + 118 |+ if a > b or a == b: # end-of-line +121 119 | return 3 +122 120 | elif a < b: # end-of-line +123 121 | return 4 + +SIM114.py:122:5: SIM114 [*] Combine `if` branches using logical `or` operator + | +120 | elif a == b: +121 | return 3 +122 | elif a < b: # end-of-line + | _____^ +123 | | return 4 +124 | | elif b is None: +125 | | return 4 + | |________________^ SIM114 + | + = help: Combine `if` branches + +ℹ Safe fix +119 119 | return 3 +120 120 | elif a == b: +121 121 | return 3 +122 |- elif a < b: # end-of-line +123 |- return 4 +124 |- elif b is None: + 122 |+ elif a < b or b is None: # end-of-line +125 123 | return 4 +126 124 | +127 125 | + +SIM114.py:132:5: SIM114 [*] Combine `if` branches using logical `or` operator + | +130 | a = True +131 | b = False +132 | if a > b: # end-of-line + | _____^ +133 | | return 3 +134 | | elif a := 1: +135 | | return 3 + | |________________^ SIM114 + | + = help: Combine `if` branches + +ℹ Safe fix +129 129 | """Ensure that the named expression is parenthesized when merged.""" +130 130 | a = True +131 131 | b = False +132 |- if a > b: # end-of-line +133 |- return 3 +134 |- elif a := 1: + 132 |+ if a > b or (a := 1): # end-of-line +135 133 | return 3 +136 134 | +137 135 | + +SIM114.py:138:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +138 | / if a: # we preserve comments, too! +139 | | b +140 | | elif c: # but not on the second branch +141 | | b + | |_____^ SIM114 + | + = help: Combine `if` branches + +ℹ Safe fix +135 135 | return 3 +136 136 | +137 137 | +138 |-if a: # we preserve comments, too! +139 |- b +140 |-elif c: # but not on the second branch + 138 |+if a or c: # we preserve comments, too! +141 139 | b +142 140 | +143 141 | + +SIM114.py:144:1: SIM114 [*] Combine `if` branches using logical `or` operator + | +144 | / if a: b # here's a comment +145 | | elif c: b + | |_________^ SIM114 + | + = help: Combine `if` branches + +ℹ Safe fix +141 141 | b +142 142 | +143 143 | +144 |-if a: b # here's a comment +145 |-elif c: b + 144 |+if a or c: b # here's a comment + + From 40a0231189ee2c253df170a14c18b692ca52acf3 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon, 22 Jan 2024 09:29:46 +0100 Subject: [PATCH 15/31] Bump serde_json from 1.0.109 to 1.0.111 (#9605) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> --- Cargo.lock | 4 ++-- Cargo.toml | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 9f2a895c42a8a..f745293b799c9 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2683,9 +2683,9 @@ dependencies = [ [[package]] name = "serde_json" -version = "1.0.109" +version = "1.0.111" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "cb0652c533506ad7a2e353cce269330d6afd8bdfb6d75e0ace5b35aacbd7b9e9" +checksum = "176e46fa42316f18edd598015a5166857fc835ec732f5215eac6b7bdbf0a84f4" dependencies = [ "itoa", "ryu", diff --git a/Cargo.toml b/Cargo.toml index 30d8763fdb88e..41aa682add002 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -78,7 +78,7 @@ seahash = { version ="4.1.0"} semver = { version = "1.0.21" } serde = { version = "1.0.195", features = ["derive"] } serde-wasm-bindgen = { version = "0.6.3" } -serde_json = { version = "1.0.109" } +serde_json = { version = "1.0.111" } serde_test = { version = "1.0.152" } serde_with = { version = "3.4.0", default-features = false, features = ["macros"] } shellexpand = { version = "3.0.0" } From b994fb3ce0426cb5567a519696ff7192dc9f9cf2 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon, 22 Jan 2024 09:31:09 +0100 Subject: [PATCH 16/31] Bump smallvec from 1.11.2 to 1.13.1 (#9607) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> --- Cargo.lock | 4 ++-- Cargo.toml | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index f745293b799c9..e5118b4819377 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2770,9 +2770,9 @@ checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d" [[package]] name = "smallvec" -version = "1.11.2" +version = "1.13.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4dccd0940a2dcdf68d092b8cbab7dc0ad8fa938bf95787e1b916b0e3d0e8e970" +checksum = "e6ecd384b10a64542d77071bd64bd7b231f4ed5940fba55e98c3de13824cf3d7" [[package]] name = "spin" diff --git a/Cargo.toml b/Cargo.toml index 41aa682add002..8b18a8f35a286 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -84,7 +84,7 @@ serde_with = { version = "3.4.0", default-features = false, features = ["macros" shellexpand = { version = "3.0.0" } shlex = { version ="1.2.0"} similar = { version = "2.4.0", features = ["inline"] } -smallvec = { version = "1.11.2" } +smallvec = { version = "1.13.1" } static_assertions = "1.1.0" strum = { version = "0.25.0", features = ["strum_macros"] } strum_macros = { version = "0.25.3" } From 76a069d0c9ebb8a43a236f18e7281353566a57ec Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon, 22 Jan 2024 08:39:28 +0000 Subject: [PATCH 17/31] Bump serde_with from 3.4.0 to 3.5.0 (#9608) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> --- Cargo.lock | 8 ++++---- Cargo.toml | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index e5118b4819377..371ed93df9c76 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2712,9 +2712,9 @@ dependencies = [ [[package]] name = "serde_with" -version = "3.4.0" +version = "3.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "64cd236ccc1b7a29e7e2739f27c0b2dd199804abc4290e32f59f3b68d6405c23" +checksum = "f58c3a1b3e418f61c25b2aeb43fc6c95eaa252b8cecdda67f401943e9e08d33f" dependencies = [ "serde", "serde_with_macros", @@ -2722,9 +2722,9 @@ dependencies = [ [[package]] name = "serde_with_macros" -version = "3.4.0" +version = "3.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "93634eb5f75a2323b16de4748022ac4297f9e76b6dced2be287a099f41b5e788" +checksum = "d2068b437a31fc68f25dd7edc296b078f04b45145c199d8eed9866e45f1ff274" dependencies = [ "darling", "proc-macro2", diff --git a/Cargo.toml b/Cargo.toml index 8b18a8f35a286..02a203ec292a8 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -80,7 +80,7 @@ serde = { version = "1.0.195", features = ["derive"] } serde-wasm-bindgen = { version = "0.6.3" } serde_json = { version = "1.0.111" } serde_test = { version = "1.0.152" } -serde_with = { version = "3.4.0", default-features = false, features = ["macros"] } +serde_with = { version = "3.5.0", default-features = false, features = ["macros"] } shellexpand = { version = "3.0.0" } shlex = { version ="1.2.0"} similar = { version = "2.4.0", features = ["inline"] } From a3d667ed046fd52c4958b1dbeadbb86b976c32bb Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon, 22 Jan 2024 08:39:48 +0000 Subject: [PATCH 18/31] Bump shlex from 1.2.0 to 1.3.0 (#9609) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> --- Cargo.lock | 4 ++-- Cargo.toml | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 371ed93df9c76..98684ec29f77e 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2752,9 +2752,9 @@ dependencies = [ [[package]] name = "shlex" -version = "1.2.0" +version = "1.3.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a7cee0529a6d40f580e7a5e6c495c8fbfe21b7b52795ed4bb5e62cdf92bc6380" +checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64" [[package]] name = "similar" diff --git a/Cargo.toml b/Cargo.toml index 02a203ec292a8..99d6bc4b9d931 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -82,7 +82,7 @@ serde_json = { version = "1.0.111" } serde_test = { version = "1.0.152" } serde_with = { version = "3.5.0", default-features = false, features = ["macros"] } shellexpand = { version = "3.0.0" } -shlex = { version ="1.2.0"} +shlex = { version ="1.3.0"} similar = { version = "2.4.0", features = ["inline"] } smallvec = { version = "1.13.1" } static_assertions = "1.1.0" From f5061dbb8eba417a09d3313442a382d71ad9c3d1 Mon Sep 17 00:00:00 2001 From: Alex Waygood Date: Mon, 22 Jan 2024 12:21:55 +0000 Subject: [PATCH 19/31] Add a rule/autofix to sort `__slots__` and `__match_args__` (#9564) ## Summary This PR introduces a new rule to sort `__slots__` and `__match_args__` according to a [natural sort](https://en.wikipedia.org/wiki/Natural_sort_order), as was requested in https://github.com/astral-sh/ruff/issues/1198#issuecomment-1881418365. The implementation here generalises some of the machinery introduced in https://github.com/astral-sh/ruff/commit/3aae16f1bdef51e2f64ea4e9e64f9201ad4d9020 so that different kinds of sorts can be applied to lists of string literals. (We use an "isort-style" sort for `__all__`, but that isn't really appropriate for `__slots__` and `__match_args__`, where nearly all items will be snake_case.) Several sections of code have been moved from `sort_dunder_all.rs` to a new module, `sorting_helpers.rs`, which `sort_dunder_all.rs` and `sort_dunder_slots.rs` both make use of. `__match_args__` is very similar to `__all__`, in that it can only be a tuple or a list. `__slots__` differs from the other two, however, in that it can be any iterable of strings. If slots is a dictionary, the values are used by the builtin `help()` function as per-attribute docstrings that show up in the output of `help()`. (There's no particular use-case for making `__slots__` a set, but it's perfectly legal at runtime, so there's no reason for us not to handle it in this rule.) Note that we don't do an autofix for multiline `__slots__` if `__slots__` is a dictionary: that's out of scope. Everything else, we can nearly always fix, however. ## Test Plan `cargo test` / `cargo insta review`. I also ran this rule on CPython, and the diff looked pretty good --- Co-authored-by: Micha Reiser --- .../resources/test/fixtures/ruff/RUF022.py | 2 + .../resources/test/fixtures/ruff/RUF023.py | 234 +++++ .../src/checkers/ast/analyze/statement.rs | 6 + crates/ruff_linter/src/codes.rs | 1 + crates/ruff_linter/src/rules/ruff/mod.rs | 1 + .../ruff_linter/src/rules/ruff/rules/mod.rs | 3 + .../src/rules/ruff/rules/sequence_sorting.rs | 926 ++++++++++++++++++ .../src/rules/ruff/rules/sort_dunder_all.rs | 830 +--------------- .../src/rules/ruff/rules/sort_dunder_slots.rs | 356 +++++++ ..._rules__ruff__tests__RUF023_RUF023.py.snap | 546 +++++++++++ ruff.schema.json | 1 + 11 files changed, 2093 insertions(+), 813 deletions(-) create mode 100644 crates/ruff_linter/resources/test/fixtures/ruff/RUF023.py create mode 100644 crates/ruff_linter/src/rules/ruff/rules/sequence_sorting.rs create mode 100644 crates/ruff_linter/src/rules/ruff/rules/sort_dunder_slots.rs create mode 100644 crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF023_RUF023.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/ruff/RUF022.py b/crates/ruff_linter/resources/test/fixtures/ruff/RUF022.py index 5a749d3ed4dd1..7b93efba2d08b 100644 --- a/crates/ruff_linter/resources/test/fixtures/ruff/RUF022.py +++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF022.py @@ -306,3 +306,5 @@ class IntroducesNonModuleScope: __all__ = [ "foo", (), "bar" ] + +__all__ = "foo", "an" "implicitly_concatenated_second_item", not_a_string_literal diff --git a/crates/ruff_linter/resources/test/fixtures/ruff/RUF023.py b/crates/ruff_linter/resources/test/fixtures/ruff/RUF023.py new file mode 100644 index 0000000000000..655933c95deb2 --- /dev/null +++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF023.py @@ -0,0 +1,234 @@ +######################### +# Single-line definitions +######################### + +class Klass: + __slots__ = ["d", "c", "b", "a"] # a comment that is untouched + __match_args__ = ("d", "c", "b", "a") + + # Quoting style is retained, + # but unnecessary parens are not + __slots__: set = {'b', "c", ((('a')))} + # Trailing commas are also not retained for single-line definitions + # (but they are in multiline definitions) + __match_args__: tuple = ("b", "c", "a",) + +class Klass2: + if bool(): + __slots__ = {"x": "docs for x", "m": "docs for m", "a": "docs for a"} + else: + __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) + + __match_args__: list[str] = ["the", "three", "little", "pigs"] + __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") + # we use natural sort, + # not alphabetical sort or "isort-style" sort + __slots__ = {"aadvark237", "aadvark10092", "aadvark174", "aadvark532"} + +############################ +# Neat multiline definitions +############################ + +class Klass3: + __slots__ = ( + "d0", + "c0", # a comment regarding 'c0' + "b0", + # a comment regarding 'a0': + "a0" + ) + __match_args__ = [ + "d", + "c", # a comment regarding 'c' + "b", + # a comment regarding 'a': + "a" + ] + +########################################## +# Messier multiline __all__ definitions... +########################################## + +class Klass4: + # comment0 + __slots__ = ("d", "a", # comment1 + # comment2 + "f", "b", + "strangely", # comment3 + # comment4 + "formatted", + # comment5 + ) # comment6 + # comment7 + + __match_args__ = [ # comment0 + # comment1 + # comment2 + "dx", "cx", "bx", "ax" # comment3 + # comment4 + # comment5 + # comment6 + ] # comment7 + +# from cpython/Lib/pathlib/__init__.py +class PurePath: + __slots__ = ( + # The `_raw_paths` slot stores unnormalized string paths. This is set + # in the `__init__()` method. + '_raw_paths', + + # The `_drv`, `_root` and `_tail_cached` slots store parsed and + # normalized parts of the path. They are set when any of the `drive`, + # `root` or `_tail` properties are accessed for the first time. The + # three-part division corresponds to the result of + # `os.path.splitroot()`, except that the tail is further split on path + # separators (i.e. it is a list of strings), and that the root and + # tail are normalized. + '_drv', '_root', '_tail_cached', + + # The `_str` slot stores the string representation of the path, + # computed from the drive, root and tail when `__str__()` is called + # for the first time. It's used to implement `_str_normcase` + '_str', + + # The `_str_normcase_cached` slot stores the string path with + # normalized case. It is set when the `_str_normcase` property is + # accessed for the first time. It's used to implement `__eq__()` + # `__hash__()`, and `_parts_normcase` + '_str_normcase_cached', + + # The `_parts_normcase_cached` slot stores the case-normalized + # string path after splitting on path separators. It's set when the + # `_parts_normcase` property is accessed for the first time. It's used + # to implement comparison methods like `__lt__()`. + '_parts_normcase_cached', + + # The `_hash` slot stores the hash of the case-normalized string + # path. It's set when `__hash__()` is called for the first time. + '_hash', + ) + +# From cpython/Lib/pickletools.py +class ArgumentDescriptor(object): + __slots__ = ( + # name of descriptor record, also a module global name; a string + 'name', + + # length of argument, in bytes; an int; UP_TO_NEWLINE and + # TAKEN_FROM_ARGUMENT{1,4,8} are negative values for variable-length + # cases + 'n', + + # a function taking a file-like object, reading this kind of argument + # from the object at the current position, advancing the current + # position by n bytes, and returning the value of the argument + 'reader', + + # human-readable docs for this arg descriptor; a string + 'doc', + ) + +#################################### +# Should be flagged, but not fixed +#################################### + +# from cpython/Lib/test/test_inspect.py. +# Multiline dicts are out of scope. +class SlotUser: + __slots__ = {'power': 'measured in kilowatts', + 'distance': 'measured in kilometers'} + +class Klass5: + __match_args__ = ( + "look", + ( + "a_veeeeeeeeeeeeeeeeeeery_long_parenthesized_item" + ), + ) + __slots__ = ( + "b", + (( + "c" + )), + "a" + ) + __slots__ = ("don't" "care" "about", "__slots__" "with", "concatenated" "strings") + +################################### +# These should all not get flagged: +################################### + +class Klass6: + __slots__ = () + __match_args__ = [] + __slots__ = ("single_item",) + __match_args__ = ( + "single_item_multiline", + ) + __slots__ = {"single_item",} + __slots__ = {"single_item_no_trailing_comma": "docs for that"} + __match_args__ = [ + "single_item_multiline_no_trailing_comma" + ] + __slots__ = ("not_a_tuple_just_a_string") + __slots__ = ["a", "b", "c", "d"] + __slots__ += ["e", "f", "g"] + __slots__ = ("a", "b", "c", "d") + + if bool(): + __slots__ += ("e", "f", "g") + else: + __slots__ += ["alpha", "omega"] + + __slots__ = {"not": "sorted", "but": "includes", **a_kwarg_splat} + +__slots__ = ("b", "a", "e", "d") +__slots__ = ["b", "a", "e", "d"] +__match_args__ = ["foo", "bar", "antipasti"] + +class Klass6: + __slots__ = (9, 8, 7) + __match_args__ = ( # This is just an empty tuple, + # but, + # it's very well + ) # documented + + # We don't deduplicate elements; + # this just ensures that duplicate elements aren't unnecessarily + # reordered by an autofix: + __slots__ = ( + "duplicate_element", # comment1 + "duplicate_element", # comment3 + "duplicate_element", # comment2 + "duplicate_element", # comment0 + ) + + __slots__ = "foo", "an" "implicitly_concatenated_second_item", not_a_string_literal + + __slots__ =[ + [] + ] + __slots__ = [ + () + ] + __match_args__ = ( + () + ) + __match_args__ = ( + [] + ) + __slots__ = ( + (), + ) + __slots__ = ( + [], + ) + __match_args__ = ( + "foo", [], "bar" + ) + __match_args__ = [ + "foo", (), "bar" + ] + + __match_args__ = {"a", "set", "for", "__match_args__", "is invalid"} + __match_args__ = {"this": "is", "also": "invalid"} diff --git a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs index b3a994593992f..33ca106673198 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs @@ -1450,6 +1450,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { if checker.settings.rules.enabled(Rule::UnsortedDunderAll) { ruff::rules::sort_dunder_all_assign(checker, assign); } + if checker.enabled(Rule::UnsortedDunderSlots) { + ruff::rules::sort_dunder_slots_assign(checker, assign); + } if checker.source_type.is_stub() { if checker.any_enabled(&[ Rule::UnprefixedTypeParam, @@ -1523,6 +1526,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { if checker.settings.rules.enabled(Rule::UnsortedDunderAll) { ruff::rules::sort_dunder_all_ann_assign(checker, assign_stmt); } + if checker.enabled(Rule::UnsortedDunderSlots) { + ruff::rules::sort_dunder_slots_ann_assign(checker, assign_stmt); + } if checker.source_type.is_stub() { if let Some(value) = value { if checker.enabled(Rule::AssignmentDefaultInStub) { diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs index f050700a79b17..a049589958739 100644 --- a/crates/ruff_linter/src/codes.rs +++ b/crates/ruff_linter/src/codes.rs @@ -926,6 +926,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> { (Ruff, "020") => (RuleGroup::Preview, rules::ruff::rules::NeverUnion), (Ruff, "021") => (RuleGroup::Preview, rules::ruff::rules::ParenthesizeChainedOperators), (Ruff, "022") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderAll), + (Ruff, "023") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderSlots), (Ruff, "024") => (RuleGroup::Preview, rules::ruff::rules::MutableFromkeysValue), (Ruff, "100") => (RuleGroup::Stable, rules::ruff::rules::UnusedNOQA), (Ruff, "200") => (RuleGroup::Stable, rules::ruff::rules::InvalidPyprojectToml), diff --git a/crates/ruff_linter/src/rules/ruff/mod.rs b/crates/ruff_linter/src/rules/ruff/mod.rs index 6c69271138aea..26abe0ae8a93c 100644 --- a/crates/ruff_linter/src/rules/ruff/mod.rs +++ b/crates/ruff_linter/src/rules/ruff/mod.rs @@ -43,6 +43,7 @@ mod tests { #[test_case(Rule::NeverUnion, Path::new("RUF020.py"))] #[test_case(Rule::ParenthesizeChainedOperators, Path::new("RUF021.py"))] #[test_case(Rule::UnsortedDunderAll, Path::new("RUF022.py"))] + #[test_case(Rule::UnsortedDunderSlots, Path::new("RUF023.py"))] #[test_case(Rule::MutableFromkeysValue, Path::new("RUF024.py"))] fn rules(rule_code: Rule, path: &Path) -> Result<()> { let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy()); diff --git a/crates/ruff_linter/src/rules/ruff/rules/mod.rs b/crates/ruff_linter/src/rules/ruff/rules/mod.rs index b73c614e64b5d..58324facbc6ad 100644 --- a/crates/ruff_linter/src/rules/ruff/rules/mod.rs +++ b/crates/ruff_linter/src/rules/ruff/rules/mod.rs @@ -15,6 +15,7 @@ pub(crate) use pairwise_over_zipped::*; pub(crate) use parenthesize_logical_operators::*; pub(crate) use quadratic_list_summation::*; pub(crate) use sort_dunder_all::*; +pub(crate) use sort_dunder_slots::*; pub(crate) use static_key_dict_comprehension::*; pub(crate) use unnecessary_iterable_allocation_for_first_element::*; pub(crate) use unnecessary_key_check::*; @@ -37,7 +38,9 @@ mod mutable_fromkeys_value; mod never_union; mod pairwise_over_zipped; mod parenthesize_logical_operators; +mod sequence_sorting; mod sort_dunder_all; +mod sort_dunder_slots; mod static_key_dict_comprehension; mod unnecessary_iterable_allocation_for_first_element; mod unnecessary_key_check; diff --git a/crates/ruff_linter/src/rules/ruff/rules/sequence_sorting.rs b/crates/ruff_linter/src/rules/ruff/rules/sequence_sorting.rs new file mode 100644 index 0000000000000..9648fed7eac13 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/rules/sequence_sorting.rs @@ -0,0 +1,926 @@ +/// Utilities for sorting constant lists of string literals. +/// +/// Examples where these are useful: +/// - Sorting `__all__` in the global scope, +/// - Sorting `__slots__` or `__match_args__` in a class scope +use std::borrow::Cow; +use std::cmp::Ordering; + +use ruff_python_ast as ast; +use ruff_python_codegen::Stylist; +use ruff_python_parser::{lexer, Mode, Tok, TokenKind}; +use ruff_python_stdlib::str::is_cased_uppercase; +use ruff_python_trivia::leading_indentation; +use ruff_source_file::Locator; +use ruff_text_size::{Ranged, TextRange, TextSize}; + +use is_macro; +use natord; + +/// An enumeration of the different sorting styles +/// currently supported for displays of string literals +#[derive(Debug, Clone, Copy)] +pub(super) enum SortingStyle { + /// Sort string-literal items according to a + /// [natural sort](https://en.wikipedia.org/wiki/Natural_sort_order). + Natural, + /// Sort string-literal items "isort-style". + /// + /// An isort-style sort orders items first according to their casing: + /// SCREAMING_SNAKE_CASE names (conventionally used for global constants) + /// come first, followed by CamelCase names (conventionally used for + /// classes), followed by anything else. Within each category, + /// a [natural sort](https://en.wikipedia.org/wiki/Natural_sort_order) + /// is used to order the elements. + Isort, +} + +impl SortingStyle { + pub(super) fn compare(self, a: &str, b: &str) -> Ordering { + match self { + Self::Natural => natord::compare(a, b), + Self::Isort => IsortSortKey::from(a).cmp(&IsortSortKey::from(b)), + } + } +} + +/// A struct to implement logic necessary to achieve +/// an "isort-style sort". +/// +/// An isort-style sort sorts items first according to their casing: +/// `SCREAMING_SNAKE_CASE` names (conventionally used for global constants) +/// come first, followed by CamelCase names (conventionally used for +/// classes), followed by anything else. Within each category, +/// a [natural sort](https://en.wikipedia.org/wiki/Natural_sort_order) +/// is used to order the elements. +struct IsortSortKey<'a> { + category: InferredMemberType, + value: &'a str, +} + +impl Ord for IsortSortKey<'_> { + fn cmp(&self, other: &Self) -> Ordering { + self.category + .cmp(&other.category) + .then_with(|| natord::compare(self.value, other.value)) + } +} + +impl PartialOrd for IsortSortKey<'_> { + fn partial_cmp(&self, other: &Self) -> Option { + Some(self.cmp(other)) + } +} + +impl PartialEq for IsortSortKey<'_> { + fn eq(&self, other: &Self) -> bool { + self.cmp(other) == Ordering::Equal + } +} + +impl Eq for IsortSortKey<'_> {} + +impl<'a> From<&'a str> for IsortSortKey<'a> { + fn from(value: &'a str) -> Self { + Self { + category: InferredMemberType::of(value), + value, + } + } +} + +/// Classification for the casing of an element in a +/// sequence of literal strings. +/// +/// This is necessary to achieve an "isort-style" sort, +/// where elements are sorted first by category, +/// then, within categories, are sorted according +/// to a natural sort. +/// +/// You'll notice that a very similar enum exists +/// in ruff's reimplementation of isort. +#[derive(Debug, Ord, PartialOrd, Eq, PartialEq, Clone, Copy)] +enum InferredMemberType { + Constant, + Class, + Other, +} + +impl InferredMemberType { + fn of(value: &str) -> Self { + // E.g. `CONSTANT` + if value.len() > 1 && is_cased_uppercase(value) { + Self::Constant + // E.g. `Class` + } else if value.starts_with(char::is_uppercase) { + Self::Class + // E.g. `some_variable` or `some_function` + } else { + Self::Other + } + } +} + +/// An enumeration of the various kinds of sequences for which Python has +/// [display literals](https://docs.python.org/3/reference/expressions.html#displays-for-lists-sets-and-dictionaries). +/// +/// (I'm aware a set isn't actually a "sequence", +/// *but* for our purposes it's conceptually a sequence, +/// since in terms of the AST structure it's almost identical +/// to tuples/lists.) +/// +/// Whereas list, dict and set literals are always parenthesized +/// (e.g. lists always start with `[` and end with `]`), +/// single-line tuple literals *can* be unparenthesized. +/// We keep the original AST node around for the +/// Tuple variant so that this can be queried later. +#[derive(Debug)] +pub(super) enum SequenceKind<'a> { + List, + Set, + Tuple(&'a ast::ExprTuple), +} + +impl SequenceKind<'_> { + // N.B. We only need the source code for the Tuple variant here, + // but if you already have a `Locator` instance handy, + // getting the source code is very cheap. + fn surrounding_brackets(&self, source: &str) -> (&'static str, &'static str) { + match self { + Self::List => ("[", "]"), + Self::Set => ("{", "}"), + Self::Tuple(ast_node) => { + if ast_node.is_parenthesized(source) { + ("(", ")") + } else { + ("", "") + } + } + } + } + + const fn opening_token_for_multiline_definition(&self) -> TokenKind { + match self { + Self::List => TokenKind::Lsqb, + Self::Set => TokenKind::Lbrace, + Self::Tuple(_) => TokenKind::Lpar, + } + } + + const fn closing_token_for_multiline_definition(&self) -> TokenKind { + match self { + Self::List => TokenKind::Rsqb, + Self::Set => TokenKind::Rbrace, + Self::Tuple(_) => TokenKind::Rpar, + } + } +} + +/// A newtype that zips together the string values of a display literal's elts, +/// together with the original AST nodes for that display literal's elts. +/// +/// The main purpose of separating this out into a separate struct +/// is to enforce the invariants that: +/// +/// 1. The two iterables that are zipped together have the same length; and, +/// 2. The length of both iterables is >= 2 +struct SequenceElements<'a>(Vec<(&'a &'a str, &'a ast::Expr)>); + +impl<'a> SequenceElements<'a> { + fn new(elements: &'a [&str], elts: &'a [ast::Expr]) -> Self { + assert_eq!(elements.len(), elts.len()); + assert!( + elements.len() >= 2, + "A sequence with < 2 elements cannot be unsorted" + ); + Self(elements.iter().zip(elts).collect()) + } + + fn last_item_index(&self) -> usize { + // Safe from underflow, as the constructor guarantees + // that the underlying vector has length >= 2 + self.0.len() - 1 + } + + fn into_sorted_elts( + mut self, + sorting_style: SortingStyle, + ) -> impl Iterator { + self.0 + .sort_by(|(elem1, _), (elem2, _)| sorting_style.compare(elem1, elem2)); + self.0.into_iter().map(|(_, elt)| elt) + } +} + +/// Create a string representing a fixed-up single-line +/// definition of `__all__` or `__slots__` (etc.), +/// that can be inserted into the +/// source code as a `range_replacement` autofix. +pub(super) fn sort_single_line_elements_sequence( + kind: &SequenceKind, + elts: &[ast::Expr], + elements: &[&str], + locator: &Locator, + sorting_style: SortingStyle, +) -> String { + let element_pairs = SequenceElements::new(elements, elts); + let last_item_index = element_pairs.last_item_index(); + let (opening_paren, closing_paren) = kind.surrounding_brackets(locator.contents()); + let mut result = String::from(opening_paren); + // We grab the original source-code ranges using `locator.slice()` + // rather than using the expression generator, as this approach allows + // us to easily preserve stylistic choices in the original source code + // such as whether double or single quotes were used. + for (i, elt) in element_pairs.into_sorted_elts(sorting_style).enumerate() { + result.push_str(locator.slice(elt)); + if i < last_item_index { + result.push_str(", "); + } + } + result.push_str(closing_paren); + result +} + +/// An enumeration of the possible conclusions we could come to +/// regarding the ordering of the elements in a display of string literals +#[derive(Debug, is_macro::Is)] +pub(super) enum SortClassification<'a> { + /// It's a display of string literals that is already sorted + Sorted, + /// It's an unsorted display of string literals, + /// but we wouldn't be able to autofix it + UnsortedButUnfixable, + /// It's an unsorted display of string literals, + /// and it's possible we could generate a fix for it; + /// here's the values of the elts so we can use them to + /// generate an autofix: + UnsortedAndMaybeFixable { items: Vec<&'a str> }, + /// The display contains one or more items that are not string + /// literals. + NotAListOfStringLiterals, +} + +impl<'a> SortClassification<'a> { + pub(super) fn of_elements(elements: &'a [ast::Expr], sorting_style: SortingStyle) -> Self { + // If it's of length less than 2, it has to be sorted already + let Some((first, rest @ [_, ..])) = elements.split_first() else { + return Self::Sorted; + }; + + // If any elt we encounter is not an ExprStringLiteral AST node, + // that indicates at least one item in the sequence is not a string literal, + // which means the sequence is out of scope for RUF022/RUF023/etc. + let Some(string_node) = first.as_string_literal_expr() else { + return Self::NotAListOfStringLiterals; + }; + let mut current = string_node.value.to_str(); + + for expr in rest { + let Some(string_node) = expr.as_string_literal_expr() else { + return Self::NotAListOfStringLiterals; + }; + let next = string_node.value.to_str(); + if sorting_style.compare(next, current).is_lt() { + // Looks like the sequence was not in fact already sorted! + // + // Now we need to gather the necessary information we'd need + // to create an autofix. We need to know three things for this: + // + // 1. Are all items in the sequence string literals? + // (If not, we won't even be emitting the violation, let alone + // trying to fix it.) + // 2. Are any items in the sequence implicitly concatenated? + // (If so, we might be *emitting* the violation, but we definitely + // won't be trying to fix it.) + // 3. What is the value of each elt in the sequence? + let mut items = Vec::with_capacity(elements.len()); + let mut any_implicit_concatenation = false; + for expr in elements { + let Some(string_node) = expr.as_string_literal_expr() else { + return Self::NotAListOfStringLiterals; + }; + any_implicit_concatenation |= string_node.value.is_implicit_concatenated(); + items.push(string_node.value.to_str()); + } + if any_implicit_concatenation { + return Self::UnsortedButUnfixable; + } + return Self::UnsortedAndMaybeFixable { items }; + } + current = next; + } + // Looks like the sequence was already sorted -- hooray! + // We won't be emitting a violation this time. + Self::Sorted + } +} + +// An instance of this struct encapsulates an analysis +/// of a multiline Python tuple/list that represents an +/// `__all__`/`__slots__`/etc. definition or augmentation. +pub(super) struct MultilineStringSequenceValue { + items: Vec, + range: TextRange, + ends_with_trailing_comma: bool, +} + +impl MultilineStringSequenceValue { + pub(super) fn len(&self) -> usize { + self.items.len() + } + + /// Analyse the source range for a multiline Python tuple/list that + /// represents an `__all__`/`__slots__`/etc. definition or augmentation. + /// Return `None` if the analysis fails for whatever reason. + pub(super) fn from_source_range( + range: TextRange, + kind: &SequenceKind, + locator: &Locator, + ) -> Option { + // Parse the multiline string sequence using the raw tokens. + // See the docs for `collect_string_sequence_lines()` for why we have to + // use the raw tokens, rather than just the AST, to do this parsing. + // + // Step (1). Start by collecting information on each line individually: + let (lines, ends_with_trailing_comma) = + collect_string_sequence_lines(range, kind, locator)?; + + // Step (2). Group lines together into sortable "items": + // - Any "item" contains a single element of the list/tuple + // - Assume that any comments on their own line are meant to be grouped + // with the element immediately below them: if the element moves, + // the comments above the element move with it. + // - The same goes for any comments on the same line as an element: + // if the element moves, the comment moves with it. + let items = collect_string_sequence_items(lines, range, locator); + + Some(MultilineStringSequenceValue { + items, + range, + ends_with_trailing_comma, + }) + } + + /// Sort a multiline sequence of literal strings + /// that is known to be unsorted. + /// + /// This function panics if it is called and `self.items` + /// has length < 2. It's redundant to call this method in this case, + /// since lists with < 2 items cannot be unsorted, + /// so this is a logic error. + pub(super) fn into_sorted_source_code( + mut self, + sorting_style: SortingStyle, + locator: &Locator, + stylist: &Stylist, + ) -> String { + let (first_item_start, last_item_end) = match self.items.as_slice() { + [first_item, .., last_item] => (first_item.start(), last_item.end()), + _ => panic!( + "We shouldn't be attempting an autofix if a sequence has < 2 elements; + a sequence with 1 or 0 elements cannot be unsorted." + ), + }; + + // As well as the "items" in a multiline string sequence, + // there is also a "prelude" and a "postlude": + // - Prelude == the region of source code from the opening parenthesis, + // up to the start of the first item in `__all__`/`__slots__`/etc. + // - Postlude == the region of source code from the end of the last + // item in `__all__`/`__slots__`/etc. up to and including the closing + // parenthesis. + // + // For example: + // + // ```python + // __all__ = [ # comment0 + // # comment1 + // "first item", + // "last item" # comment2 + // # comment3 + // ] # comment4 + // ``` + // + // - The prelude in the above example is the source code region + // starting just before the opening `[` and ending just after `# comment0`. + // `comment0` here counts as part of the prelude because it is on + // the same line as the opening paren, and because we haven't encountered + // any elements of `__all__` yet, but `comment1` counts as part of the first item, + // as it's on its own line, and all comments on their own line are grouped + // with the next element below them to make "items", + // (an "item" being a region of source code that all moves as one unit + // when `__all__` is sorted). + // - The postlude in the above example is the source code region starting + // just after `# comment2` and ending just after the closing paren. + // `# comment2` is part of the last item, as it's an inline comment on the + // same line as an element, but `# comment3` becomes part of the postlude + // because there are no items below it. `# comment4` is not part of the + // postlude: it's outside of the source-code range considered by this rule, + // and should therefore be untouched. + // + let newline = stylist.line_ending().as_str(); + let start_offset = self.start(); + let leading_indent = leading_indentation(locator.full_line(start_offset)); + let item_indent = format!("{}{}", leading_indent, stylist.indentation().as_str()); + + let prelude = + multiline_string_sequence_prelude(first_item_start, newline, start_offset, locator); + let postlude = multiline_string_sequence_postlude( + last_item_end, + newline, + leading_indent, + &item_indent, + self.end(), + locator, + ); + + self.items + .sort_by(|a, b| sorting_style.compare(&a.value, &b.value)); + let joined_items = join_multiline_string_sequence_items( + &self.items, + locator, + &item_indent, + newline, + self.ends_with_trailing_comma, + ); + + format!("{prelude}{joined_items}{postlude}") + } +} + +impl Ranged for MultilineStringSequenceValue { + fn range(&self) -> TextRange { + self.range + } +} + +/// Collect data on each line of a multiline string sequence. +/// Return `None` if the sequence appears to be invalid, +/// or if it's an edge case we don't support. +/// +/// Why do we need to do this using the raw tokens, +/// when we already have the AST? The AST strips out +/// crucial information that we need to track here for +/// a multiline string sequence, such as: +/// - The value of comments +/// - The amount of whitespace between the end of a line +/// and an inline comment +/// - Whether or not the final item in the tuple/list has a +/// trailing comma +/// +/// All of this information is necessary to have at a later +/// stage if we're to sort items without doing unnecessary +/// brutality to the comments and pre-existing style choices +/// in the original source code. +fn collect_string_sequence_lines( + range: TextRange, + kind: &SequenceKind, + locator: &Locator, +) -> Option<(Vec, bool)> { + // These first two variables are used for keeping track of state + // regarding the entirety of the string sequence... + let mut ends_with_trailing_comma = false; + let mut lines = vec![]; + // ... all state regarding a single line of a string sequence + // is encapsulated in this variable + let mut line_state = LineState::default(); + + // `lex_starts_at()` gives us absolute ranges rather than relative ranges, + // but (surprisingly) we still need to pass in the slice of code we want it to lex, + // rather than the whole source file: + let mut token_iter = + lexer::lex_starts_at(locator.slice(range), Mode::Expression, range.start()); + let (first_tok, _) = token_iter.next()?.ok()?; + if TokenKind::from(&first_tok) != kind.opening_token_for_multiline_definition() { + return None; + } + let expected_final_token = kind.closing_token_for_multiline_definition(); + + for pair in token_iter { + let (tok, subrange) = pair.ok()?; + match tok { + Tok::NonLogicalNewline => { + lines.push(line_state.into_string_sequence_line()); + line_state = LineState::default(); + } + Tok::Comment(_) => { + line_state.visit_comment_token(subrange); + } + Tok::String { value, .. } => { + line_state.visit_string_token(value, subrange); + ends_with_trailing_comma = false; + } + Tok::Comma => { + line_state.visit_comma_token(subrange); + ends_with_trailing_comma = true; + } + tok if TokenKind::from(&tok) == expected_final_token => { + lines.push(line_state.into_string_sequence_line()); + break; + } + _ => return None, + } + } + Some((lines, ends_with_trailing_comma)) +} + +/// This struct is for keeping track of state +/// regarding a single line in a multiline string sequence +/// It is purely internal to `collect_string_sequence_lines()`, +/// and should not be used outside that function. +/// +/// There are three possible kinds of line in a multiline +/// string sequence, and we don't know what kind of a line +/// we're in until all tokens in that line have been processed: +/// +/// - A line with just a comment +/// (`StringSequenceLine::JustAComment)`) +/// - A line with one or more string items in it +/// (`StringSequenceLine::OneOrMoreItems`) +/// - An empty line (`StringSequenceLine::Empty`) +/// +/// As we process the tokens in a single line, +/// this struct accumulates the necessary state for us +/// to be able to determine what kind of a line we're in. +/// Once the entire line has been processed, +/// `into_string_sequence_line()` is called, which consumes +/// `self` and produces the classification for the line. +#[derive(Debug, Default)] +struct LineState { + first_item_in_line: Option<(String, TextRange)>, + following_items_in_line: Vec<(String, TextRange)>, + comment_range_start: Option, + comment_in_line: Option, +} + +impl LineState { + fn visit_string_token(&mut self, token_value: String, token_range: TextRange) { + if self.first_item_in_line.is_none() { + self.first_item_in_line = Some((token_value, token_range)); + } else { + self.following_items_in_line + .push((token_value, token_range)); + } + self.comment_range_start = Some(token_range.end()); + } + + fn visit_comma_token(&mut self, token_range: TextRange) { + self.comment_range_start = Some(token_range.end()); + } + + /// If this is a comment on its own line, + /// record the range of that comment. + /// + /// *If*, however, we've already seen a comma + /// or a string in this line, that means that we're + /// in a line with items. In that case, we want to + /// record the range of the comment, *plus* the whitespace + /// (if any) preceding the comment. This is so that we don't + /// unnecessarily apply opinionated formatting changes + /// where they might not be welcome. + fn visit_comment_token(&mut self, token_range: TextRange) { + self.comment_in_line = { + if let Some(comment_range_start) = self.comment_range_start { + Some(TextRange::new(comment_range_start, token_range.end())) + } else { + Some(token_range) + } + } + } + + fn into_string_sequence_line(self) -> StringSequenceLine { + if let Some(first_item) = self.first_item_in_line { + StringSequenceLine::OneOrMoreItems(LineWithItems { + first_item, + following_items: self.following_items_in_line, + trailing_comment_range: self.comment_in_line, + }) + } else { + self.comment_in_line + .map_or(StringSequenceLine::Empty, |comment_range| { + StringSequenceLine::JustAComment(LineWithJustAComment(comment_range)) + }) + } + } +} + +/// Instances of this struct represent source-code lines in the middle +/// of multiline tuples/lists/sets where the line contains +/// 0 elements of the sequence, but the line does have a comment in it. +#[derive(Debug)] +struct LineWithJustAComment(TextRange); + +/// Instances of this struct represent source-code lines in +/// multiline tuples/lists/sets where the line contains at least +/// 1 element of the sequence. The line may contain > 1 element of the +/// sequence, and may also have a trailing comment after the element(s). +#[derive(Debug)] +struct LineWithItems { + // For elements in the list, we keep track of the value of the + // value of the element as well as the source-code range of the element. + // (We need to know the actual value so that we can sort the items.) + first_item: (String, TextRange), + following_items: Vec<(String, TextRange)>, + // For comments, we only need to keep track of the source-code range. + trailing_comment_range: Option, +} + +impl LineWithItems { + fn num_items(&self) -> usize { + self.following_items.len() + 1 + } +} + +/// An enumeration of the possible kinds of source-code lines +/// that can exist in a multiline string sequence: +/// +/// - A line that has no string elements, but does have a comment. +/// - A line that has one or more string elements, +/// and may also have a trailing comment. +/// - An entirely empty line. +#[derive(Debug)] +enum StringSequenceLine { + JustAComment(LineWithJustAComment), + OneOrMoreItems(LineWithItems), + Empty, +} + +/// Given data on each line in a multiline string sequence, +/// group lines together into "items". +/// +/// Each item contains exactly one string element, +/// but might contain multiple comments attached to that element +/// that must move with the element when the string sequence is sorted. +/// +/// Note that any comments following the last item are discarded here, +/// but that doesn't matter: we add them back in `into_sorted_source_code()` +/// as part of the `postlude` (see comments in that function) +fn collect_string_sequence_items( + lines: Vec, + dunder_all_range: TextRange, + locator: &Locator, +) -> Vec { + let mut all_items = Vec::with_capacity(match lines.as_slice() { + [StringSequenceLine::OneOrMoreItems(single)] => single.num_items(), + _ => lines.len(), + }); + let mut first_item_encountered = false; + let mut preceding_comment_ranges = vec![]; + for line in lines { + match line { + StringSequenceLine::JustAComment(LineWithJustAComment(comment_range)) => { + // Comments on the same line as the opening paren and before any elements + // count as part of the "prelude"; these are not grouped into any item... + if first_item_encountered + || locator.line_start(comment_range.start()) + != locator.line_start(dunder_all_range.start()) + { + // ...but for all other comments that precede an element, + // group the comment with the element following that comment + // into an "item", so that the comment moves as one with the element + // when the list/tuple/set is sorted + preceding_comment_ranges.push(comment_range); + } + } + StringSequenceLine::OneOrMoreItems(LineWithItems { + first_item: (first_val, first_range), + following_items, + trailing_comment_range: comment_range, + }) => { + first_item_encountered = true; + all_items.push(StringSequenceItem::new( + first_val, + std::mem::take(&mut preceding_comment_ranges), + first_range, + comment_range, + )); + for (value, range) in following_items { + all_items.push(StringSequenceItem::with_no_comments(value, range)); + } + } + StringSequenceLine::Empty => continue, // discard empty lines + } + } + all_items +} + +/// An instance of this struct represents a single element +/// from a multiline string sequence, *and* any comments that +/// are "attached" to it. The comments "attached" to the element +/// will move with the element when the tuple/list/set is sorted. +/// +/// Comments on their own line immediately preceding the element will +/// always form a contiguous range with the range of the element itself; +/// however, inline comments won't necessary form a contiguous range. +/// Consider the following scenario, where both `# comment0` and `# comment1` +/// will move with the "a" element when the list is sorted: +/// +/// ```python +/// __all__ = [ +/// "b", +/// # comment0 +/// "a", "c", # comment1 +/// ] +/// ``` +/// +/// The desired outcome here is: +/// +/// ```python +/// __all__ = [ +/// # comment0 +/// "a", # comment1 +/// "b", +/// "c", +/// ] +/// ``` +/// +/// To achieve this, both `# comment0` and `# comment1` +/// are grouped into the `StringSequenceItem` instance +/// where the value is `"a"`, even though the source-code range +/// of `# comment1` does not form a contiguous range with the +/// source-code range of `"a"`. +#[derive(Debug)] +struct StringSequenceItem { + value: String, + preceding_comment_ranges: Vec, + element_range: TextRange, + // total_range incorporates the ranges of preceding comments + // (which must be contiguous with the element), + // but doesn't incorporate any trailing comments + // (which might be contiguous, but also might not be) + total_range: TextRange, + end_of_line_comments: Option, +} + +impl StringSequenceItem { + fn new( + value: String, + preceding_comment_ranges: Vec, + element_range: TextRange, + end_of_line_comments: Option, + ) -> Self { + let total_range = { + if let Some(first_comment_range) = preceding_comment_ranges.first() { + TextRange::new(first_comment_range.start(), element_range.end()) + } else { + element_range + } + }; + Self { + value, + preceding_comment_ranges, + element_range, + total_range, + end_of_line_comments, + } + } + + fn with_no_comments(value: String, element_range: TextRange) -> Self { + Self::new(value, vec![], element_range, None) + } +} + +impl Ranged for StringSequenceItem { + fn range(&self) -> TextRange { + self.total_range + } +} + +/// Return a string representing the "prelude" for a +/// multiline string sequence. +/// +/// See inline comments in +/// `MultilineStringSequenceValue::into_sorted_source_code()` +/// for a definition of the term "prelude" in this context. +fn multiline_string_sequence_prelude<'a>( + first_item_start_offset: TextSize, + newline: &str, + dunder_all_offset: TextSize, + locator: &'a Locator, +) -> Cow<'a, str> { + let prelude_end = { + let first_item_line_offset = locator.line_start(first_item_start_offset); + if first_item_line_offset == locator.line_start(dunder_all_offset) { + first_item_start_offset + } else { + first_item_line_offset + } + }; + let prelude = locator.slice(TextRange::new(dunder_all_offset, prelude_end)); + if prelude.ends_with(['\r', '\n']) { + Cow::Borrowed(prelude) + } else { + Cow::Owned(format!("{}{}", prelude.trim_end(), newline)) + } +} + +/// Join the elements and comments of a multiline string sequence +/// definition into a single string. +/// +/// The resulting string does not include the "prelude" or +/// "postlude" of the tuple/set/list. +/// (See inline comments in +/// `MultilineStringSequence::into_sorted_source_code()` for +/// definitions of the terms "prelude" and "postlude" in this +/// context.) +fn join_multiline_string_sequence_items( + sorted_items: &[StringSequenceItem], + locator: &Locator, + item_indent: &str, + newline: &str, + needs_trailing_comma: bool, +) -> String { + assert!( + sorted_items.len() >= 2, + "A sequence with < 2 items cannot be unsorted" + ); + let last_item_index = sorted_items.len() - 1; + + let mut new_dunder_all = String::new(); + for (i, item) in sorted_items.iter().enumerate() { + let is_final_item = i == last_item_index; + for comment_range in &item.preceding_comment_ranges { + new_dunder_all.push_str(item_indent); + new_dunder_all.push_str(locator.slice(comment_range)); + new_dunder_all.push_str(newline); + } + new_dunder_all.push_str(item_indent); + new_dunder_all.push_str(locator.slice(item.element_range)); + if !is_final_item || needs_trailing_comma { + new_dunder_all.push(','); + } + if let Some(trailing_comments) = item.end_of_line_comments { + new_dunder_all.push_str(locator.slice(trailing_comments)); + } + if !is_final_item { + new_dunder_all.push_str(newline); + } + } + new_dunder_all +} + +/// Return a string representing the "postlude" for a +/// multiline string sequence. +/// +/// See inline comments in +/// `MultilineStringSequence::into_sorted_source_code()` +/// for a definition of the term "postlude" in this context. +fn multiline_string_sequence_postlude<'a>( + last_item_end_offset: TextSize, + newline: &str, + leading_indent: &str, + item_indent: &str, + dunder_all_range_end: TextSize, + locator: &'a Locator, +) -> Cow<'a, str> { + let postlude_start = { + let last_item_line_offset = locator.line_end(last_item_end_offset); + if last_item_line_offset == locator.line_end(dunder_all_range_end) { + last_item_end_offset + } else { + last_item_line_offset + } + }; + let postlude = locator.slice(TextRange::new(postlude_start, dunder_all_range_end)); + + // The rest of this function uses heuristics to + // avoid very long indents for the closing paren + // that don't match the style for the rest of the + // fixed-up multiline string sequence. + // + // For example, we want to avoid something like this + // (not uncommon in code that hasn't been + // autoformatted)... + // + // ```python + // __all__ = ["xxxxxx", "yyyyyy", + // "aaaaaa", "bbbbbb", + // ] + // ``` + // + // ...getting autofixed to this: + // + // ```python + // __all__ = [ + // "a", + // "b", + // "x", + // "y", + // ] + // ``` + let newline_chars = ['\r', '\n']; + if !postlude.starts_with(newline_chars) { + return Cow::Borrowed(postlude); + } + if TextSize::of(leading_indentation( + postlude.trim_start_matches(newline_chars), + )) <= TextSize::of(item_indent) + { + return Cow::Borrowed(postlude); + } + let trimmed_postlude = postlude.trim_start(); + if trimmed_postlude.starts_with([']', ')']) { + return Cow::Owned(format!("{newline}{leading_indent}{trimmed_postlude}")); + } + Cow::Borrowed(postlude) +} diff --git a/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_all.rs b/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_all.rs index 788b300dd56cc..341bff19c5bdf 100644 --- a/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_all.rs +++ b/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_all.rs @@ -1,27 +1,19 @@ -use std::borrow::Cow; -use std::cmp::Ordering; - use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; use ruff_macros::{derive_message_formats, violation}; use ruff_python_ast as ast; -use ruff_python_codegen::Stylist; -use ruff_python_parser::{lexer, Mode, Tok}; -use ruff_python_stdlib::str::is_cased_uppercase; -use ruff_python_trivia::leading_indentation; -use ruff_source_file::Locator; -use ruff_text_size::{Ranged, TextRange, TextSize}; +use ruff_text_size::TextRange; use crate::checkers::ast::Checker; - -use is_macro; -use itertools::Itertools; -use natord; +use crate::rules::ruff::rules::sequence_sorting::{ + sort_single_line_elements_sequence, MultilineStringSequenceValue, SequenceKind, + SortClassification, SortingStyle, +}; /// ## What it does /// Checks for `__all__` definitions that are not ordered /// according to an "isort-style" sort. /// -/// An isort-style sort sorts items first according to their casing: +/// An isort-style sort orders items first according to their casing: /// SCREAMING_SNAKE_CASE names (conventionally used for global constants) /// come first, followed by CamelCase names (conventionally used for /// classes), followed by anything else. Within each category, @@ -85,6 +77,8 @@ impl Violation for UnsortedDunderAll { } } +const SORTING_STYLE: SortingStyle = SortingStyle::Isort; + /// Sort an `__all__` definition represented by a `StmtAssign` AST node. /// For example: `__all__ = ["b", "c", "a"]`. pub(crate) fn sort_dunder_all_assign( @@ -157,21 +151,21 @@ fn sort_dunder_all(checker: &mut Checker, target: &ast::Expr, node: &ast::Expr) } let (elts, range, kind) = match node { - ast::Expr::List(ast::ExprList { elts, range, .. }) => (elts, *range, DunderAllKind::List), + ast::Expr::List(ast::ExprList { elts, range, .. }) => (elts, *range, SequenceKind::List), ast::Expr::Tuple(tuple_node @ ast::ExprTuple { elts, range, .. }) => { - (elts, *range, DunderAllKind::Tuple(tuple_node)) + (elts, *range, SequenceKind::Tuple(tuple_node)) } _ => return, }; - let elts_analysis = DunderAllSortClassification::from_elements(elts); + let elts_analysis = SortClassification::of_elements(elts, SORTING_STYLE); if elts_analysis.is_not_a_list_of_string_literals() || elts_analysis.is_sorted() { return; } let mut diagnostic = Diagnostic::new(UnsortedDunderAll, range); - if let DunderAllSortClassification::UnsortedAndMaybeFixable { items } = elts_analysis { + if let SortClassification::UnsortedAndMaybeFixable { items } = elts_analysis { if let Some(fix) = create_fix(range, elts, &items, &kind, checker) { diagnostic.set_fix(fix); } @@ -180,176 +174,6 @@ fn sort_dunder_all(checker: &mut Checker, target: &ast::Expr, node: &ast::Expr) checker.diagnostics.push(diagnostic); } -/// An enumeration of the two valid ways of defining -/// `__all__`: as a list, or as a tuple. -/// -/// Whereas lists are always parenthesized -/// (they always start with `[` and end with `]`), -/// single-line tuples *can* be unparenthesized. -/// We keep the original AST node around for the -/// Tuple variant so that this can be queried later. -#[derive(Debug)] -enum DunderAllKind<'a> { - List, - Tuple(&'a ast::ExprTuple), -} - -impl DunderAllKind<'_> { - fn is_parenthesized(&self, source: &str) -> bool { - match self { - Self::List => true, - Self::Tuple(ast_node) => ast_node.is_parenthesized(source), - } - } - - fn opening_token_for_multiline_definition(&self) -> Tok { - match self { - Self::List => Tok::Lsqb, - Self::Tuple(_) => Tok::Lpar, - } - } - - fn closing_token_for_multiline_definition(&self) -> Tok { - match self { - Self::List => Tok::Rsqb, - Self::Tuple(_) => Tok::Rpar, - } - } -} - -/// An enumeration of the possible conclusions we could come to -/// regarding the ordering of the elements in an `__all__` definition: -/// -/// 1. `__all__` is a list of string literals that is already sorted -/// 2. `__all__` is an unsorted list of string literals, -/// but we wouldn't be able to autofix it -/// 3. `__all__` is an unsorted list of string literals, -/// and it's possible we could generate a fix for it -/// 4. `__all__` contains one or more items that are not string -/// literals. -/// -/// ("Sorted" here means "ordered according to an isort-style sort". -/// See the module-level docs for a definition of "isort-style sort.") -#[derive(Debug, is_macro::Is)] -enum DunderAllSortClassification<'a> { - Sorted, - UnsortedButUnfixable, - UnsortedAndMaybeFixable { items: Vec<&'a str> }, - NotAListOfStringLiterals, -} - -impl<'a> DunderAllSortClassification<'a> { - fn from_elements(elements: &'a [ast::Expr]) -> Self { - let Some((first, rest @ [_, ..])) = elements.split_first() else { - return Self::Sorted; - }; - let Some(string_node) = first.as_string_literal_expr() else { - return Self::NotAListOfStringLiterals; - }; - let mut this = string_node.value.to_str(); - - for expr in rest { - let Some(string_node) = expr.as_string_literal_expr() else { - return Self::NotAListOfStringLiterals; - }; - let next = string_node.value.to_str(); - if AllItemSortKey::from(next) < AllItemSortKey::from(this) { - let mut items = Vec::with_capacity(elements.len()); - for expr in elements { - let Some(string_node) = expr.as_string_literal_expr() else { - return Self::NotAListOfStringLiterals; - }; - if string_node.value.is_implicit_concatenated() { - return Self::UnsortedButUnfixable; - } - items.push(string_node.value.to_str()); - } - return Self::UnsortedAndMaybeFixable { items }; - } - this = next; - } - Self::Sorted - } -} - -/// A struct to implement logic necessary to achieve -/// an "isort-style sort". -/// -/// See the docs for this module as a whole for the -/// definition we use here of an "isort-style sort". -struct AllItemSortKey<'a> { - category: InferredMemberType, - value: &'a str, -} - -impl Ord for AllItemSortKey<'_> { - fn cmp(&self, other: &Self) -> Ordering { - self.category - .cmp(&other.category) - .then_with(|| natord::compare(self.value, other.value)) - } -} - -impl PartialOrd for AllItemSortKey<'_> { - fn partial_cmp(&self, other: &Self) -> Option { - Some(self.cmp(other)) - } -} - -impl PartialEq for AllItemSortKey<'_> { - fn eq(&self, other: &Self) -> bool { - self.cmp(other) == Ordering::Equal - } -} - -impl Eq for AllItemSortKey<'_> {} - -impl<'a> From<&'a str> for AllItemSortKey<'a> { - fn from(value: &'a str) -> Self { - Self { - category: InferredMemberType::of(value), - value, - } - } -} - -impl<'a> From<&'a DunderAllItem> for AllItemSortKey<'a> { - fn from(item: &'a DunderAllItem) -> Self { - Self::from(item.value.as_str()) - } -} - -/// Classification for an element in `__all__`. -/// -/// This is necessary to achieve an "isort-style" sort, -/// where elements are sorted first by category, -/// then, within categories, are sorted according -/// to a natural sort. -/// -/// You'll notice that a very similar enum exists -/// in ruff's reimplementation of isort. -#[derive(Debug, Ord, PartialOrd, Eq, PartialEq, Clone, Copy)] -enum InferredMemberType { - Constant, - Class, - Other, -} - -impl InferredMemberType { - fn of(value: &str) -> Self { - // E.g. `CONSTANT` - if value.len() > 1 && is_cased_uppercase(value) { - Self::Constant - // E.g. `Class` - } else if value.starts_with(char::is_uppercase) { - Self::Class - // E.g. `some_variable` or `some_function` - } else { - Self::Other - } - } -} - /// Attempt to return `Some(fix)`, where `fix` is a `Fix` /// that can be set on the diagnostic to sort the user's /// `__all__` definition @@ -363,7 +187,7 @@ fn create_fix( range: TextRange, elts: &[ast::Expr], string_items: &[&str], - kind: &DunderAllKind, + kind: &SequenceKind, checker: &Checker, ) -> Option { let locator = checker.locator(); @@ -384,11 +208,11 @@ fn create_fix( // bare minimum of token-processing for single-line `__all__` // definitions: if is_multiline { - let value = MultilineDunderAllValue::from_source_range(range, kind, locator)?; - assert_eq!(value.items.len(), elts.len()); - value.into_sorted_source_code(locator, checker.stylist()) + let value = MultilineStringSequenceValue::from_source_range(range, kind, locator)?; + assert_eq!(value.len(), elts.len()); + value.into_sorted_source_code(SORTING_STYLE, locator, checker.stylist()) } else { - sort_single_line_dunder_all(elts, string_items, kind, locator) + sort_single_line_elements_sequence(kind, elts, string_items, locator, SORTING_STYLE) } }; @@ -397,623 +221,3 @@ fn create_fix( range, ))) } - -/// An instance of this struct encapsulates an analysis -/// of a multiline Python tuple/list that represents an -/// `__all__` definition or augmentation. -struct MultilineDunderAllValue { - items: Vec, - range: TextRange, - ends_with_trailing_comma: bool, -} - -impl MultilineDunderAllValue { - /// Analyse the source range for a multiline Python tuple/list that - /// represents an `__all__` definition or augmentation. Return `None` - /// if the analysis fails for whatever reason. - fn from_source_range( - range: TextRange, - kind: &DunderAllKind, - locator: &Locator, - ) -> Option { - // Parse the multiline `__all__` definition using the raw tokens. - // See the docs for `collect_dunder_all_lines()` for why we have to - // use the raw tokens, rather than just the AST, to do this parsing. - // - // Step (1). Start by collecting information on each line individually: - let (lines, ends_with_trailing_comma) = collect_dunder_all_lines(range, kind, locator)?; - - // Step (2). Group lines together into sortable "items": - // - Any "item" contains a single element of the `__all__` list/tuple - // - Assume that any comments on their own line are meant to be grouped - // with the element immediately below them: if the element moves, - // the comments above the element move with it. - // - The same goes for any comments on the same line as an element: - // if the element moves, the comment moves with it. - let items = collect_dunder_all_items(lines, range, locator); - - Some(MultilineDunderAllValue { - items, - range, - ends_with_trailing_comma, - }) - } - - /// Sort a multiline `__all__` definition - /// that is known to be unsorted. - /// - /// Panics if this is called and `self.items` - /// has length < 2. It's redundant to call this method in this case, - /// since lists with < 2 items cannot be unsorted, - /// so this is a logic error. - fn into_sorted_source_code(mut self, locator: &Locator, stylist: &Stylist) -> String { - let (first_item_start, last_item_end) = match self.items.as_slice() { - [first_item, .., last_item] => (first_item.start(), last_item.end()), - _ => panic!( - "We shouldn't be attempting an autofix if `__all__` has < 2 elements; - an `__all__` definition with 1 or 0 elements cannot be unsorted." - ), - }; - - // As well as the "items" in the `__all__` definition, - // there is also a "prelude" and a "postlude": - // - Prelude == the region of source code from the opening parenthesis, - // up to the start of the first item in `__all__`. - // - Postlude == the region of source code from the end of the last - // item in `__all__` up to and including the closing parenthesis. - // - // For example: - // - // ```python - // __all__ = [ # comment0 - // # comment1 - // "first item", - // "last item" # comment2 - // # comment3 - // ] # comment4 - // ``` - // - // - The prelude in the above example is the source code region - // starting just before the opening `[` and ending just after `# comment0`. - // `comment0` here counts as part of the prelude because it is on - // the same line as the opening paren, and because we haven't encountered - // any elements of `__all__` yet, but `comment1` counts as part of the first item, - // as it's on its own line, and all comments on their own line are grouped - // with the next element below them to make "items", - // (an "item" being a region of source code that all moves as one unit - // when `__all__` is sorted). - // - The postlude in the above example is the source code region starting - // just after `# comment2` and ending just after the closing paren. - // `# comment2` is part of the last item, as it's an inline comment on the - // same line as an element, but `# comment3` becomes part of the postlude - // because there are no items below it. `# comment4` is not part of the - // postlude: it's outside of the source-code range considered by this rule, - // and should therefore be untouched. - // - let newline = stylist.line_ending().as_str(); - let start_offset = self.start(); - let leading_indent = leading_indentation(locator.full_line(start_offset)); - let item_indent = format!("{}{}", leading_indent, stylist.indentation().as_str()); - - let prelude = - multiline_dunder_all_prelude(first_item_start, newline, start_offset, locator); - let postlude = multiline_dunder_all_postlude( - last_item_end, - newline, - leading_indent, - &item_indent, - self.end(), - locator, - ); - - self.items - .sort_by(|this, next| AllItemSortKey::from(this).cmp(&AllItemSortKey::from(next))); - let joined_items = join_multiline_dunder_all_items( - &self.items, - locator, - &item_indent, - newline, - self.ends_with_trailing_comma, - ); - - format!("{prelude}{joined_items}{postlude}") - } -} - -impl Ranged for MultilineDunderAllValue { - fn range(&self) -> TextRange { - self.range - } -} - -/// Collect data on each line of a multiline `__all__` definition. -/// Return `None` if `__all__` appears to be invalid, -/// or if it's an edge case we don't support. -/// -/// Why do we need to do this using the raw tokens, -/// when we already have the AST? The AST strips out -/// crucial information that we need to track here for -/// a multiline `__all__` definition, such as: -/// - The value of comments -/// - The amount of whitespace between the end of a line -/// and an inline comment -/// - Whether or not the final item in the tuple/list has a -/// trailing comma -/// -/// All of this information is necessary to have at a later -/// stage if we're to sort items without doing unnecessary -/// brutality to the comments and pre-existing style choices -/// in the original source code. -fn collect_dunder_all_lines( - range: TextRange, - kind: &DunderAllKind, - locator: &Locator, -) -> Option<(Vec, bool)> { - // These first two variables are used for keeping track of state - // regarding the entirety of the `__all__` definition... - let mut ends_with_trailing_comma = false; - let mut lines = vec![]; - // ... all state regarding a single line of an `__all__` definition - // is encapsulated in this variable - let mut line_state = LineState::default(); - - // `lex_starts_at()` gives us absolute ranges rather than relative ranges, - // but (surprisingly) we still need to pass in the slice of code we want it to lex, - // rather than the whole source file: - let mut token_iter = - lexer::lex_starts_at(locator.slice(range), Mode::Expression, range.start()); - let (first_tok, _) = token_iter.next()?.ok()?; - if first_tok != kind.opening_token_for_multiline_definition() { - return None; - } - let expected_final_token = kind.closing_token_for_multiline_definition(); - - for pair in token_iter { - let (tok, subrange) = pair.ok()?; - match tok { - Tok::NonLogicalNewline => { - lines.push(line_state.into_dunder_all_line()); - line_state = LineState::default(); - } - Tok::Comment(_) => { - line_state.visit_comment_token(subrange); - } - Tok::String { value, .. } => { - line_state.visit_string_token(value, subrange); - ends_with_trailing_comma = false; - } - Tok::Comma => { - line_state.visit_comma_token(subrange); - ends_with_trailing_comma = true; - } - tok if tok == expected_final_token => { - lines.push(line_state.into_dunder_all_line()); - break; - } - _ => return None, - } - } - Some((lines, ends_with_trailing_comma)) -} - -/// This struct is for keeping track of state -/// regarding a single line in a multiline `__all__` definition. -/// It is purely internal to `collect_dunder_all_lines()`, -/// and should not be used outside that function. -/// -/// There are three possible kinds of line in a multiline -/// `__all__` definition, and we don't know what kind of a line -/// we're in until all tokens in that line have been processed: -/// -/// - A line with just a comment (`DunderAllLine::JustAComment)`) -/// - A line with one or more string items in it (`DunderAllLine::OneOrMoreItems`) -/// - An empty line (`DunderAllLine::Empty`) -/// -/// As we process the tokens in a single line, -/// this struct accumulates the necessary state for us -/// to be able to determine what kind of a line we're in. -/// Once the entire line has been processed, `into_dunder_all_line()` -/// is called, which consumes `self` and produces the -/// classification for the line. -#[derive(Debug, Default)] -struct LineState { - first_item_in_line: Option<(String, TextRange)>, - following_items_in_line: Vec<(String, TextRange)>, - comment_range_start: Option, - comment_in_line: Option, -} - -impl LineState { - fn visit_string_token(&mut self, token_value: String, token_range: TextRange) { - if self.first_item_in_line.is_none() { - self.first_item_in_line = Some((token_value, token_range)); - } else { - self.following_items_in_line - .push((token_value, token_range)); - } - self.comment_range_start = Some(token_range.end()); - } - - fn visit_comma_token(&mut self, token_range: TextRange) { - self.comment_range_start = Some(token_range.end()); - } - - /// If this is a comment on its own line, - /// record the range of that comment. - /// - /// *If*, however, we've already seen a comma - /// or a string in this line, that means that we're - /// in a line with items. In that case, we want to - /// record the range of the comment, *plus* the whitespace - /// (if any) preceding the comment. This is so that we don't - /// unnecessarily apply opinionated formatting changes - /// where they might not be welcome. - fn visit_comment_token(&mut self, token_range: TextRange) { - self.comment_in_line = { - if let Some(comment_range_start) = self.comment_range_start { - Some(TextRange::new(comment_range_start, token_range.end())) - } else { - Some(token_range) - } - } - } - - fn into_dunder_all_line(self) -> DunderAllLine { - if let Some(first_item) = self.first_item_in_line { - DunderAllLine::OneOrMoreItems(LineWithItems { - first_item, - following_items: self.following_items_in_line, - trailing_comment_range: self.comment_in_line, - }) - } else { - self.comment_in_line - .map_or(DunderAllLine::Empty, |comment_range| { - DunderAllLine::JustAComment(LineWithJustAComment(comment_range)) - }) - } - } -} - -/// Instances of this struct represent source-code lines in the middle -/// of multiline `__all__` tuples/lists where the line contains -/// 0 elements of the tuple/list, but the line does have a comment in it. -#[derive(Debug)] -struct LineWithJustAComment(TextRange); - -/// Instances of this struct represent source-code lines in single-line -/// or multiline `__all__` tuples/lists where the line contains at least -/// 1 element of the tuple/list. The line may contain > 1 element of the -/// tuple/list, and may also have a trailing comment after the element(s). -#[derive(Debug)] -struct LineWithItems { - // For elements in the list, we keep track of the value of the - // value of the element as well as the source-code range of the element. - // (We need to know the actual value so that we can sort the items.) - first_item: (String, TextRange), - following_items: Vec<(String, TextRange)>, - // For comments, we only need to keep track of the source-code range. - trailing_comment_range: Option, -} - -impl LineWithItems { - fn num_items(&self) -> usize { - self.following_items.len() + 1 - } -} - -/// An enumeration of the possible kinds of source-code lines -/// that can exist in a multiline `__all__` tuple or list: -/// -/// - A line that has no string elements, but does have a comment. -/// - A line that has one or more string elements, -/// and may also have a trailing comment. -/// - An entirely empty line. -#[derive(Debug)] -enum DunderAllLine { - JustAComment(LineWithJustAComment), - OneOrMoreItems(LineWithItems), - Empty, -} - -/// Given data on each line in a multiline `__all__` definition, -/// group lines together into "items". -/// -/// Each item contains exactly one string element, -/// but might contain multiple comments attached to that element -/// that must move with the element when `__all__` is sorted. -/// -/// Note that any comments following the last item are discarded here, -/// but that doesn't matter: we add them back in `into_sorted_source_code()` -/// as part of the `postlude` (see comments in that function) -fn collect_dunder_all_items( - lines: Vec, - dunder_all_range: TextRange, - locator: &Locator, -) -> Vec { - let mut all_items = Vec::with_capacity(match lines.as_slice() { - [DunderAllLine::OneOrMoreItems(single)] => single.num_items(), - _ => lines.len(), - }); - let mut first_item_encountered = false; - let mut preceding_comment_ranges = vec![]; - for line in lines { - match line { - DunderAllLine::JustAComment(LineWithJustAComment(comment_range)) => { - // Comments on the same line as the opening paren and before any elements - // count as part of the "prelude"; these are not grouped into any item... - if first_item_encountered - || locator.line_start(comment_range.start()) - != locator.line_start(dunder_all_range.start()) - { - // ...but for all other comments that precede an element, - // group the comment with the element following that comment - // into an "item", so that the comment moves as one with the element - // when the `__all__` list/tuple is sorted - preceding_comment_ranges.push(comment_range); - } - } - DunderAllLine::OneOrMoreItems(LineWithItems { - first_item: (first_val, first_range), - following_items, - trailing_comment_range: comment_range, - }) => { - first_item_encountered = true; - all_items.push(DunderAllItem::new( - first_val, - std::mem::take(&mut preceding_comment_ranges), - first_range, - comment_range, - )); - for (value, range) in following_items { - all_items.push(DunderAllItem::with_no_comments(value, range)); - } - } - DunderAllLine::Empty => continue, // discard empty lines - } - } - all_items -} - -/// An instance of this struct represents a single element -/// from a multiline `__all__` tuple/list, *and* any comments that -/// are "attached" to it. The comments "attached" to the element -/// will move with the element when the `__all__` tuple/list is sorted. -/// -/// Comments on their own line immediately preceding the element will -/// always form a contiguous range with the range of the element itself; -/// however, inline comments won't necessary form a contiguous range. -/// Consider the following scenario, where both `# comment0` and `# comment1` -/// will move with the "a" element when the list is sorted: -/// -/// ```python -/// __all__ = [ -/// "b", -/// # comment0 -/// "a", "c", # comment1 -/// ] -/// ``` -/// -/// The desired outcome here is: -/// -/// ```python -/// __all__ = [ -/// # comment0 -/// "a", # comment1 -/// "b", -/// "c", -/// ] -/// ``` -/// -/// To achieve this, both `# comment0` and `# comment1` -/// are grouped into the `DunderAllItem` instance -/// where the value is `"a"`, even though the source-code range -/// of `# comment1` does not form a contiguous range with the -/// source-code range of `"a"`. -#[derive(Debug)] -struct DunderAllItem { - value: String, - preceding_comment_ranges: Vec, - element_range: TextRange, - // total_range incorporates the ranges of preceding comments - // (which must be contiguous with the element), - // but doesn't incorporate any trailing comments - // (which might be contiguous, but also might not be) - total_range: TextRange, - end_of_line_comments: Option, -} - -impl DunderAllItem { - fn new( - value: String, - preceding_comment_ranges: Vec, - element_range: TextRange, - end_of_line_comments: Option, - ) -> Self { - let total_range = { - if let Some(first_comment_range) = preceding_comment_ranges.first() { - TextRange::new(first_comment_range.start(), element_range.end()) - } else { - element_range - } - }; - Self { - value, - preceding_comment_ranges, - element_range, - total_range, - end_of_line_comments, - } - } - - fn with_no_comments(value: String, element_range: TextRange) -> Self { - Self::new(value, vec![], element_range, None) - } -} - -impl Ranged for DunderAllItem { - fn range(&self) -> TextRange { - self.total_range - } -} - -/// Return a string representing the "prelude" for a -/// multiline `__all__` definition. -/// -/// See inline comments in -/// `MultilineDunderAllValue::into_sorted_source_code()` -/// for a definition of the term "prelude" in this context. -fn multiline_dunder_all_prelude<'a>( - first_item_start_offset: TextSize, - newline: &str, - dunder_all_offset: TextSize, - locator: &'a Locator, -) -> Cow<'a, str> { - let prelude_end = { - let first_item_line_offset = locator.line_start(first_item_start_offset); - if first_item_line_offset == locator.line_start(dunder_all_offset) { - first_item_start_offset - } else { - first_item_line_offset - } - }; - let prelude = locator.slice(TextRange::new(dunder_all_offset, prelude_end)); - if prelude.ends_with(['\r', '\n']) { - Cow::Borrowed(prelude) - } else { - Cow::Owned(format!("{}{}", prelude.trim_end(), newline)) - } -} - -/// Join the elements and comments of a multiline `__all__` -/// definition into a single string. -/// -/// The resulting string does not include the "prelude" or -/// "postlude" of the `__all__` definition. -/// (See inline comments in `MultilineDunderAllValue::into_sorted_source_code()` -/// for definitions of the terms "prelude" and "postlude" -/// in this context.) -fn join_multiline_dunder_all_items( - sorted_items: &[DunderAllItem], - locator: &Locator, - item_indent: &str, - newline: &str, - needs_trailing_comma: bool, -) -> String { - let last_item_index = sorted_items.len() - 1; - - let mut new_dunder_all = String::new(); - for (i, item) in sorted_items.iter().enumerate() { - let is_final_item = i == last_item_index; - for comment_range in &item.preceding_comment_ranges { - new_dunder_all.push_str(item_indent); - new_dunder_all.push_str(locator.slice(comment_range)); - new_dunder_all.push_str(newline); - } - new_dunder_all.push_str(item_indent); - new_dunder_all.push_str(locator.slice(item.element_range)); - if !is_final_item || needs_trailing_comma { - new_dunder_all.push(','); - } - if let Some(trailing_comments) = item.end_of_line_comments { - new_dunder_all.push_str(locator.slice(trailing_comments)); - } - if !is_final_item { - new_dunder_all.push_str(newline); - } - } - new_dunder_all -} - -/// Return a string representing the "postlude" for a -/// multiline `__all__` definition. -/// -/// See inline comments in -/// `MultilineDunderAllValue::into_sorted_source_code()` -/// for a definition of the term "postlude" in this context. -fn multiline_dunder_all_postlude<'a>( - last_item_end_offset: TextSize, - newline: &str, - leading_indent: &str, - item_indent: &str, - dunder_all_range_end: TextSize, - locator: &'a Locator, -) -> Cow<'a, str> { - let postlude_start = { - let last_item_line_offset = locator.line_end(last_item_end_offset); - if last_item_line_offset == locator.line_end(dunder_all_range_end) { - last_item_end_offset - } else { - last_item_line_offset - } - }; - let postlude = locator.slice(TextRange::new(postlude_start, dunder_all_range_end)); - - // The rest of this function uses heuristics to - // avoid very long indents for the closing paren - // that don't match the style for the rest of the - // new `__all__` definition. - // - // For example, we want to avoid something like this - // (not uncommon in code that hasn't been - // autoformatted)... - // - // ```python - // __all__ = ["xxxxxx", "yyyyyy", - // "aaaaaa", "bbbbbb", - // ] - // ``` - // - // ...getting autofixed to this: - // - // ```python - // __all__ = [ - // "a", - // "b", - // "x", - // "y", - // ] - // ``` - let newline_chars = ['\r', '\n']; - if !postlude.starts_with(newline_chars) { - return Cow::Borrowed(postlude); - } - if TextSize::of(leading_indentation( - postlude.trim_start_matches(newline_chars), - )) <= TextSize::of(item_indent) - { - return Cow::Borrowed(postlude); - } - let trimmed_postlude = postlude.trim_start(); - if trimmed_postlude.starts_with([']', ')']) { - return Cow::Owned(format!("{newline}{leading_indent}{trimmed_postlude}")); - } - Cow::Borrowed(postlude) -} - -/// Create a string representing a fixed-up single-line -/// `__all__` definition, that can be inserted into the -/// source code as a `range_replacement` autofix. -fn sort_single_line_dunder_all( - elts: &[ast::Expr], - elements: &[&str], - kind: &DunderAllKind, - locator: &Locator, -) -> String { - // We grab the original source-code ranges using `locator.slice()` - // rather than using the expression generator, as this approach allows - // us to easily preserve stylistic choices in the original source code - // such as whether double or single quotes were used. - let mut element_pairs = elts.iter().zip(elements).collect_vec(); - element_pairs.sort_by_key(|(_, elem)| AllItemSortKey::from(**elem)); - let joined_items = element_pairs - .iter() - .map(|(elt, _)| locator.slice(elt)) - .join(", "); - match kind { - DunderAllKind::List => format!("[{joined_items}]"), - DunderAllKind::Tuple(_) if kind.is_parenthesized(locator.contents()) => { - format!("({joined_items})") - } - DunderAllKind::Tuple(_) => joined_items, - } -} diff --git a/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_slots.rs b/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_slots.rs new file mode 100644 index 0000000000000..bac21f6befe88 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/rules/sort_dunder_slots.rs @@ -0,0 +1,356 @@ +use std::borrow::Cow; +use std::fmt::Display; + +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast as ast; +use ruff_python_semantic::ScopeKind; +use ruff_source_file::Locator; +use ruff_text_size::{Ranged, TextRange}; + +use crate::checkers::ast::Checker; +use crate::rules::ruff::rules::sequence_sorting::{ + sort_single_line_elements_sequence, MultilineStringSequenceValue, SequenceKind, + SortClassification, SortingStyle, +}; + +use itertools::izip; + +/// ## What it does +/// Checks for `__slots__` and `__match_args__` +/// definitions that are not ordered according to a +/// [natural sort](https://en.wikipedia.org/wiki/Natural_sort_order). +/// +/// ## Why is this bad? +/// Consistency is good. Use a common convention for +/// these special variables to make your code more +/// readable and idiomatic. +/// +/// ## Example +/// ```python +/// class Dog: +/// __slots__ = "name", "breed" +/// ``` +/// +/// Use instead: +/// ```python +/// class Dog: +/// __slots__ = "breed", "name" +/// ``` +#[violation] +pub struct UnsortedDunderSlots { + class_name: String, + class_variable: SpecialClassDunder, +} + +impl Violation for UnsortedDunderSlots { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; + + #[derive_message_formats] + fn message(&self) -> String { + let UnsortedDunderSlots { + class_name, + class_variable, + } = self; + format!("`{class_name}.{class_variable}` is not sorted") + } + + fn fix_title(&self) -> Option { + let UnsortedDunderSlots { + class_name, + class_variable, + } = self; + Some(format!( + "Apply a natural sort to `{class_name}.{class_variable}`" + )) + } +} + +/// Enumeration of the two special class dunders +/// that we're interested in for this rule: `__match_args__` and `__slots__` +#[derive(Debug, Eq, PartialEq, Copy, Clone)] +enum SpecialClassDunder { + Slots, + MatchArgs, +} + +impl Display for SpecialClassDunder { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + let string = match self { + Self::MatchArgs => "__match_args__", + Self::Slots => "__slots__", + }; + write!(f, "{string}") + } +} + +/// Sort a `__slots__`/`__match_args__` definition +/// represented by a `StmtAssign` AST node. +/// For example: `__slots__ = ["b", "c", "a"]`. +pub(crate) fn sort_dunder_slots_assign( + checker: &mut Checker, + ast::StmtAssign { value, targets, .. }: &ast::StmtAssign, +) { + if let [expr] = targets.as_slice() { + sort_dunder_slots(checker, expr, value); + } +} + +/// Sort a `__slots__`/`__match_args__` definition +/// represented by a `StmtAnnAssign` AST node. +/// For example: `__slots__: list[str] = ["b", "c", "a"]`. +pub(crate) fn sort_dunder_slots_ann_assign(checker: &mut Checker, node: &ast::StmtAnnAssign) { + if let Some(value) = &node.value { + sort_dunder_slots(checker, &node.target, value); + } +} + +const SORTING_STYLE: SortingStyle = SortingStyle::Natural; + +/// Sort a tuple, list, dict or set that defines `__slots__` +/// or `__match_args__` in a class scope. +/// +/// This routine checks whether the display is sorted, and emits a +/// violation if it is not sorted. If the tuple/list/set was not sorted, +/// it attempts to set a `Fix` on the violation. +fn sort_dunder_slots(checker: &mut Checker, target: &ast::Expr, node: &ast::Expr) { + let ast::Expr::Name(ast::ExprName { id, .. }) = target else { + return; + }; + + let dunder_kind = match id.as_str() { + "__slots__" => SpecialClassDunder::Slots, + "__match_args__" => SpecialClassDunder::MatchArgs, + _ => return, + }; + + // We're only interested in `__slots__`/`__match_args__` in the class scope + let ScopeKind::Class(ast::StmtClassDef { + name: class_name, .. + }) = checker.semantic().current_scope().kind + else { + return; + }; + + let Some(display) = StringLiteralDisplay::new(node, dunder_kind) else { + return; + }; + + let sort_classification = SortClassification::of_elements(&display.elts, SORTING_STYLE); + if sort_classification.is_not_a_list_of_string_literals() || sort_classification.is_sorted() { + return; + } + + let mut diagnostic = Diagnostic::new( + UnsortedDunderSlots { + class_name: class_name.to_string(), + class_variable: dunder_kind, + }, + display.range, + ); + + if let SortClassification::UnsortedAndMaybeFixable { items } = sort_classification { + if let Some(fix) = display.generate_fix(&items, checker) { + diagnostic.set_fix(fix); + } + } + + checker.diagnostics.push(diagnostic); +} + +/// Struct representing a [display](https://docs.python.org/3/reference/expressions.html#displays-for-lists-sets-and-dictionaries) +/// of string literals. +#[derive(Debug)] +struct StringLiteralDisplay<'a> { + /// The elts from the original AST node representing the display. + /// Each elt is the AST representation of a single string literal + /// element in the display + elts: Cow<'a, Vec>, + /// The source-code range of the display as a whole + range: TextRange, + /// What kind of a display is it? A dict, set, list or tuple? + display_kind: DisplayKind<'a>, +} + +impl Ranged for StringLiteralDisplay<'_> { + fn range(&self) -> TextRange { + self.range + } +} + +impl<'a> StringLiteralDisplay<'a> { + fn new(node: &'a ast::Expr, dunder_kind: SpecialClassDunder) -> Option { + let result = match (dunder_kind, node) { + (_, ast::Expr::List(ast::ExprList { elts, range, .. })) => { + let display_kind = DisplayKind::Sequence(SequenceKind::List); + Self { + elts: Cow::Borrowed(elts), + range: *range, + display_kind, + } + } + (_, ast::Expr::Tuple(tuple_node @ ast::ExprTuple { elts, range, .. })) => { + let display_kind = DisplayKind::Sequence(SequenceKind::Tuple(tuple_node)); + Self { + elts: Cow::Borrowed(elts), + range: *range, + display_kind, + } + } + (SpecialClassDunder::Slots, ast::Expr::Set(ast::ExprSet { elts, range })) => { + let display_kind = DisplayKind::Sequence(SequenceKind::Set); + Self { + elts: Cow::Borrowed(elts), + range: *range, + display_kind, + } + } + ( + SpecialClassDunder::Slots, + ast::Expr::Dict(ast::ExprDict { + keys, + values, + range, + }), + ) => { + let mut narrowed_keys = Vec::with_capacity(values.len()); + for key in keys { + if let Some(key) = key { + // This is somewhat unfortunate, + // *but* only `__slots__` can be a dict out of + // `__all__`, `__slots__` and `__match_args__`, + // and even for `__slots__`, using a dict is very rare + narrowed_keys.push(key.to_owned()); + } else { + return None; + } + } + // If `None` was present in the keys, it indicates a "** splat", .e.g + // `__slots__ = {"foo": "bar", **other_dict}` + // If `None` wasn't present in the keys, + // the length of the keys should always equal the length of the values + assert_eq!(narrowed_keys.len(), values.len()); + let display_kind = DisplayKind::Dict { values }; + Self { + elts: Cow::Owned(narrowed_keys), + range: *range, + display_kind, + } + } + _ => return None, + }; + Some(result) + } + + fn generate_fix(&self, items: &[&str], checker: &Checker) -> Option { + let locator = checker.locator(); + let is_multiline = locator.contains_line_break(self.range()); + let sorted_source_code = match (&self.display_kind, is_multiline) { + (DisplayKind::Sequence(sequence_kind), true) => { + let analyzed_sequence = MultilineStringSequenceValue::from_source_range( + self.range(), + sequence_kind, + locator, + )?; + assert_eq!(analyzed_sequence.len(), self.elts.len()); + analyzed_sequence.into_sorted_source_code(SORTING_STYLE, locator, checker.stylist()) + } + // Sorting multiline dicts is unsupported + (DisplayKind::Dict { .. }, true) => return None, + (DisplayKind::Sequence(sequence_kind), false) => sort_single_line_elements_sequence( + sequence_kind, + &self.elts, + items, + locator, + SORTING_STYLE, + ), + (DisplayKind::Dict { values }, false) => { + sort_single_line_elements_dict(&self.elts, items, values, locator) + } + }; + Some(Fix::safe_edit(Edit::range_replacement( + sorted_source_code, + self.range, + ))) + } +} + +/// An enumeration of the various kinds of +/// [display literals](https://docs.python.org/3/reference/expressions.html#displays-for-lists-sets-and-dictionaries) +/// Python provides for builtin containers. +#[derive(Debug)] +enum DisplayKind<'a> { + Sequence(SequenceKind<'a>), + Dict { values: &'a [ast::Expr] }, +} + +/// A newtype that zips together three iterables: +/// +/// 1. The string values of a dict literal's keys; +/// 2. The original AST nodes for the dict literal's keys; and, +/// 3. The original AST nodes for the dict literal's values +/// +/// The main purpose of separating this out into a separate struct +/// is to enforce the invariants that: +/// +/// 1. The three iterables that are zipped together have the same length; and, +/// 2. The length of all three iterables is >= 2 +struct DictElements<'a>(Vec<(&'a &'a str, &'a ast::Expr, &'a ast::Expr)>); + +impl<'a> DictElements<'a> { + fn new(elements: &'a [&str], key_elts: &'a [ast::Expr], value_elts: &'a [ast::Expr]) -> Self { + assert_eq!(key_elts.len(), elements.len()); + assert_eq!(elements.len(), value_elts.len()); + assert!( + elements.len() >= 2, + "A sequence with < 2 elements cannot be unsorted" + ); + Self(izip!(elements, key_elts, value_elts).collect()) + } + + fn last_item_index(&self) -> usize { + // Safe from underflow, as the constructor guarantees + // that the underlying vector has length >= 2 + self.0.len() - 1 + } + + fn into_sorted_elts(mut self) -> impl Iterator { + self.0 + .sort_by(|(elem1, _, _), (elem2, _, _)| SORTING_STYLE.compare(elem1, elem2)); + self.0.into_iter().map(|(_, key, value)| (key, value)) + } +} + +/// Create a string representing a fixed-up single-line +/// definition of a `__slots__` dictionary that can be +/// inserted into the source code as a `range_replacement` +/// autofix. +/// +/// N.B. This function could potentially be moved into +/// `sequence_sorting.rs` if any other modules need it, +/// but stays here for now, since this is currently the +/// only module that needs it +fn sort_single_line_elements_dict( + key_elts: &[ast::Expr], + elements: &[&str], + value_elts: &[ast::Expr], + locator: &Locator, +) -> String { + let element_trios = DictElements::new(elements, key_elts, value_elts); + let last_item_index = element_trios.last_item_index(); + let mut result = String::from('{'); + // We grab the original source-code ranges using `locator.slice()` + // rather than using the expression generator, as this approach allows + // us to easily preserve stylistic choices in the original source code + // such as whether double or single quotes were used. + for (i, (key, value)) in element_trios.into_sorted_elts().enumerate() { + result.push_str(locator.slice(key)); + result.push_str(": "); + result.push_str(locator.slice(value)); + if i < last_item_index { + result.push_str(", "); + } + } + result.push('}'); + result +} diff --git a/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF023_RUF023.py.snap b/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF023_RUF023.py.snap new file mode 100644 index 0000000000000..3d6fa43fd1691 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF023_RUF023.py.snap @@ -0,0 +1,546 @@ +--- +source: crates/ruff_linter/src/rules/ruff/mod.rs +--- +RUF023.py:6:17: RUF023 [*] `Klass.__slots__` is not sorted + | +5 | class Klass: +6 | __slots__ = ["d", "c", "b", "a"] # a comment that is untouched + | ^^^^^^^^^^^^^^^^^^^^ RUF023 +7 | __match_args__ = ("d", "c", "b", "a") + | + = help: Apply a natural sort to `Klass.__slots__` + +ℹ Safe fix +3 3 | ######################### +4 4 | +5 5 | class Klass: +6 |- __slots__ = ["d", "c", "b", "a"] # a comment that is untouched + 6 |+ __slots__ = ["a", "b", "c", "d"] # a comment that is untouched +7 7 | __match_args__ = ("d", "c", "b", "a") +8 8 | +9 9 | # Quoting style is retained, + +RUF023.py:7:22: RUF023 [*] `Klass.__match_args__` is not sorted + | +5 | class Klass: +6 | __slots__ = ["d", "c", "b", "a"] # a comment that is untouched +7 | __match_args__ = ("d", "c", "b", "a") + | ^^^^^^^^^^^^^^^^^^^^ RUF023 +8 | +9 | # Quoting style is retained, + | + = help: Apply a natural sort to `Klass.__match_args__` + +ℹ Safe fix +4 4 | +5 5 | class Klass: +6 6 | __slots__ = ["d", "c", "b", "a"] # a comment that is untouched +7 |- __match_args__ = ("d", "c", "b", "a") + 7 |+ __match_args__ = ("a", "b", "c", "d") +8 8 | +9 9 | # Quoting style is retained, +10 10 | # but unnecessary parens are not + +RUF023.py:11:22: RUF023 [*] `Klass.__slots__` is not sorted + | + 9 | # Quoting style is retained, +10 | # but unnecessary parens are not +11 | __slots__: set = {'b', "c", ((('a')))} + | ^^^^^^^^^^^^^^^^^^^^^ RUF023 +12 | # Trailing commas are also not retained for single-line definitions +13 | # (but they are in multiline definitions) + | + = help: Apply a natural sort to `Klass.__slots__` + +ℹ Safe fix +8 8 | +9 9 | # Quoting style is retained, +10 10 | # but unnecessary parens are not +11 |- __slots__: set = {'b', "c", ((('a')))} + 11 |+ __slots__: set = {'a', 'b', "c"} +12 12 | # Trailing commas are also not retained for single-line definitions +13 13 | # (but they are in multiline definitions) +14 14 | __match_args__: tuple = ("b", "c", "a",) + +RUF023.py:14:29: RUF023 [*] `Klass.__match_args__` is not sorted + | +12 | # Trailing commas are also not retained for single-line definitions +13 | # (but they are in multiline definitions) +14 | __match_args__: tuple = ("b", "c", "a",) + | ^^^^^^^^^^^^^^^^ RUF023 +15 | +16 | class Klass2: + | + = help: Apply a natural sort to `Klass.__match_args__` + +ℹ Safe fix +11 11 | __slots__: set = {'b', "c", ((('a')))} +12 12 | # Trailing commas are also not retained for single-line definitions +13 13 | # (but they are in multiline definitions) +14 |- __match_args__: tuple = ("b", "c", "a",) + 14 |+ __match_args__: tuple = ("a", "b", "c") +15 15 | +16 16 | class Klass2: +17 17 | if bool(): + +RUF023.py:18:21: RUF023 [*] `Klass2.__slots__` is not sorted + | +16 | class Klass2: +17 | if bool(): +18 | __slots__ = {"x": "docs for x", "m": "docs for m", "a": "docs for a"} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF023 +19 | else: +20 | __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) + | + = help: Apply a natural sort to `Klass2.__slots__` + +ℹ Safe fix +15 15 | +16 16 | class Klass2: +17 17 | if bool(): +18 |- __slots__ = {"x": "docs for x", "m": "docs for m", "a": "docs for a"} + 18 |+ __slots__ = {"a": "docs for a", "m": "docs for m", "x": "docs for x"} +19 19 | else: +20 20 | __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) +21 21 | + +RUF023.py:20:21: RUF023 [*] `Klass2.__slots__` is not sorted + | +18 | __slots__ = {"x": "docs for x", "m": "docs for m", "a": "docs for a"} +19 | else: +20 | __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) + | ^^^^^^^^^^^^^^^^^^^^^^ RUF023 +21 | +22 | __match_args__: list[str] = ["the", "three", "little", "pigs"] + | + = help: Apply a natural sort to `Klass2.__slots__` + +ℹ Safe fix +17 17 | if bool(): +18 18 | __slots__ = {"x": "docs for x", "m": "docs for m", "a": "docs for a"} +19 19 | else: +20 |- __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) + 20 |+ __slots__ = "foo1", "foo2", "foo3" # NB: an implicit tuple (without parens) +21 21 | +22 22 | __match_args__: list[str] = ["the", "three", "little", "pigs"] +23 23 | __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") + +RUF023.py:22:33: RUF023 [*] `Klass2.__match_args__` is not sorted + | +20 | __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) +21 | +22 | __match_args__: list[str] = ["the", "three", "little", "pigs"] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF023 +23 | __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") +24 | # we use natural sort, + | + = help: Apply a natural sort to `Klass2.__match_args__` + +ℹ Safe fix +19 19 | else: +20 20 | __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) +21 21 | +22 |- __match_args__: list[str] = ["the", "three", "little", "pigs"] + 22 |+ __match_args__: list[str] = ["little", "pigs", "the", "three"] +23 23 | __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") +24 24 | # we use natural sort, +25 25 | # not alphabetical sort or "isort-style" sort + +RUF023.py:23:17: RUF023 [*] `Klass2.__slots__` is not sorted + | +22 | __match_args__: list[str] = ["the", "three", "little", "pigs"] +23 | __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF023 +24 | # we use natural sort, +25 | # not alphabetical sort or "isort-style" sort + | + = help: Apply a natural sort to `Klass2.__slots__` + +ℹ Safe fix +20 20 | __slots__ = "foo3", "foo2", "foo1" # NB: an implicit tuple (without parens) +21 21 | +22 22 | __match_args__: list[str] = ["the", "three", "little", "pigs"] +23 |- __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") + 23 |+ __slots__ = "an_unparenthesized_tuple", "in", "parenthesized_item" +24 24 | # we use natural sort, +25 25 | # not alphabetical sort or "isort-style" sort +26 26 | __slots__ = {"aadvark237", "aadvark10092", "aadvark174", "aadvark532"} + +RUF023.py:26:17: RUF023 [*] `Klass2.__slots__` is not sorted + | +24 | # we use natural sort, +25 | # not alphabetical sort or "isort-style" sort +26 | __slots__ = {"aadvark237", "aadvark10092", "aadvark174", "aadvark532"} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF023 +27 | +28 | ############################ + | + = help: Apply a natural sort to `Klass2.__slots__` + +ℹ Safe fix +23 23 | __slots__ = ("parenthesized_item"), "in", ("an_unparenthesized_tuple") +24 24 | # we use natural sort, +25 25 | # not alphabetical sort or "isort-style" sort +26 |- __slots__ = {"aadvark237", "aadvark10092", "aadvark174", "aadvark532"} + 26 |+ __slots__ = {"aadvark174", "aadvark237", "aadvark532", "aadvark10092"} +27 27 | +28 28 | ############################ +29 29 | # Neat multiline definitions + +RUF023.py:33:17: RUF023 [*] `Klass3.__slots__` is not sorted + | +32 | class Klass3: +33 | __slots__ = ( + | _________________^ +34 | | "d0", +35 | | "c0", # a comment regarding 'c0' +36 | | "b0", +37 | | # a comment regarding 'a0': +38 | | "a0" +39 | | ) + | |_____^ RUF023 +40 | __match_args__ = [ +41 | "d", + | + = help: Apply a natural sort to `Klass3.__slots__` + +ℹ Safe fix +31 31 | +32 32 | class Klass3: +33 33 | __slots__ = ( +34 |- "d0", + 34 |+ # a comment regarding 'a0': + 35 |+ "a0", + 36 |+ "b0", +35 37 | "c0", # a comment regarding 'c0' +36 |- "b0", +37 |- # a comment regarding 'a0': +38 |- "a0" + 38 |+ "d0" +39 39 | ) +40 40 | __match_args__ = [ +41 41 | "d", + +RUF023.py:40:22: RUF023 [*] `Klass3.__match_args__` is not sorted + | +38 | "a0" +39 | ) +40 | __match_args__ = [ + | ______________________^ +41 | | "d", +42 | | "c", # a comment regarding 'c' +43 | | "b", +44 | | # a comment regarding 'a': +45 | | "a" +46 | | ] + | |_____^ RUF023 +47 | +48 | ########################################## + | + = help: Apply a natural sort to `Klass3.__match_args__` + +ℹ Safe fix +38 38 | "a0" +39 39 | ) +40 40 | __match_args__ = [ +41 |- "d", + 41 |+ # a comment regarding 'a': + 42 |+ "a", + 43 |+ "b", +42 44 | "c", # a comment regarding 'c' +43 |- "b", +44 |- # a comment regarding 'a': +45 |- "a" + 45 |+ "d" +46 46 | ] +47 47 | +48 48 | ########################################## + +RUF023.py:54:17: RUF023 [*] `Klass4.__slots__` is not sorted + | +52 | class Klass4: +53 | # comment0 +54 | __slots__ = ("d", "a", # comment1 + | _________________^ +55 | | # comment2 +56 | | "f", "b", +57 | | "strangely", # comment3 +58 | | # comment4 +59 | | "formatted", +60 | | # comment5 +61 | | ) # comment6 + | |_____^ RUF023 +62 | # comment7 + | + = help: Apply a natural sort to `Klass4.__slots__` + +ℹ Safe fix +51 51 | +52 52 | class Klass4: +53 53 | # comment0 +54 |- __slots__ = ("d", "a", # comment1 +55 |- # comment2 +56 |- "f", "b", +57 |- "strangely", # comment3 +58 |- # comment4 + 54 |+ __slots__ = ( + 55 |+ "a", + 56 |+ "b", + 57 |+ "d", # comment1 + 58 |+ # comment2 + 59 |+ "f", + 60 |+ # comment4 +59 61 | "formatted", + 62 |+ "strangely", # comment3 +60 63 | # comment5 +61 64 | ) # comment6 +62 65 | # comment7 + +RUF023.py:64:22: RUF023 [*] `Klass4.__match_args__` is not sorted + | +62 | # comment7 +63 | +64 | __match_args__ = [ # comment0 + | ______________________^ +65 | | # comment1 +66 | | # comment2 +67 | | "dx", "cx", "bx", "ax" # comment3 +68 | | # comment4 +69 | | # comment5 +70 | | # comment6 +71 | | ] # comment7 + | |_____^ RUF023 +72 | +73 | # from cpython/Lib/pathlib/__init__.py + | + = help: Apply a natural sort to `Klass4.__match_args__` + +ℹ Safe fix +62 62 | # comment7 +63 63 | +64 64 | __match_args__ = [ # comment0 + 65 |+ "ax", + 66 |+ "bx", + 67 |+ "cx", +65 68 | # comment1 +66 69 | # comment2 +67 |- "dx", "cx", "bx", "ax" # comment3 + 70 |+ "dx" # comment3 +68 71 | # comment4 +69 72 | # comment5 +70 73 | # comment6 + +RUF023.py:75:17: RUF023 [*] `PurePath.__slots__` is not sorted + | + 73 | # from cpython/Lib/pathlib/__init__.py + 74 | class PurePath: + 75 | __slots__ = ( + | _________________^ + 76 | | # The `_raw_paths` slot stores unnormalized string paths. This is set + 77 | | # in the `__init__()` method. + 78 | | '_raw_paths', + 79 | | + 80 | | # The `_drv`, `_root` and `_tail_cached` slots store parsed and + 81 | | # normalized parts of the path. They are set when any of the `drive`, + 82 | | # `root` or `_tail` properties are accessed for the first time. The + 83 | | # three-part division corresponds to the result of + 84 | | # `os.path.splitroot()`, except that the tail is further split on path + 85 | | # separators (i.e. it is a list of strings), and that the root and + 86 | | # tail are normalized. + 87 | | '_drv', '_root', '_tail_cached', + 88 | | + 89 | | # The `_str` slot stores the string representation of the path, + 90 | | # computed from the drive, root and tail when `__str__()` is called + 91 | | # for the first time. It's used to implement `_str_normcase` + 92 | | '_str', + 93 | | + 94 | | # The `_str_normcase_cached` slot stores the string path with + 95 | | # normalized case. It is set when the `_str_normcase` property is + 96 | | # accessed for the first time. It's used to implement `__eq__()` + 97 | | # `__hash__()`, and `_parts_normcase` + 98 | | '_str_normcase_cached', + 99 | | +100 | | # The `_parts_normcase_cached` slot stores the case-normalized +101 | | # string path after splitting on path separators. It's set when the +102 | | # `_parts_normcase` property is accessed for the first time. It's used +103 | | # to implement comparison methods like `__lt__()`. +104 | | '_parts_normcase_cached', +105 | | +106 | | # The `_hash` slot stores the hash of the case-normalized string +107 | | # path. It's set when `__hash__()` is called for the first time. +108 | | '_hash', +109 | | ) + | |_____^ RUF023 +110 | +111 | # From cpython/Lib/pickletools.py + | + = help: Apply a natural sort to `PurePath.__slots__` + +ℹ Safe fix +73 73 | # from cpython/Lib/pathlib/__init__.py +74 74 | class PurePath: +75 75 | __slots__ = ( +76 |- # The `_raw_paths` slot stores unnormalized string paths. This is set +77 |- # in the `__init__()` method. +78 |- '_raw_paths', +79 |- +80 76 | # The `_drv`, `_root` and `_tail_cached` slots store parsed and +81 77 | # normalized parts of the path. They are set when any of the `drive`, +82 78 | # `root` or `_tail` properties are accessed for the first time. The +-------------------------------------------------------------------------------- +84 80 | # `os.path.splitroot()`, except that the tail is further split on path +85 81 | # separators (i.e. it is a list of strings), and that the root and +86 82 | # tail are normalized. +87 |- '_drv', '_root', '_tail_cached', +88 |- + 83 |+ '_drv', + 84 |+ # The `_hash` slot stores the hash of the case-normalized string + 85 |+ # path. It's set when `__hash__()` is called for the first time. + 86 |+ '_hash', + 87 |+ # The `_parts_normcase_cached` slot stores the case-normalized + 88 |+ # string path after splitting on path separators. It's set when the + 89 |+ # `_parts_normcase` property is accessed for the first time. It's used + 90 |+ # to implement comparison methods like `__lt__()`. + 91 |+ '_parts_normcase_cached', + 92 |+ # The `_raw_paths` slot stores unnormalized string paths. This is set + 93 |+ # in the `__init__()` method. + 94 |+ '_raw_paths', + 95 |+ '_root', +89 96 | # The `_str` slot stores the string representation of the path, +90 97 | # computed from the drive, root and tail when `__str__()` is called +91 98 | # for the first time. It's used to implement `_str_normcase` +92 99 | '_str', +93 |- +94 100 | # The `_str_normcase_cached` slot stores the string path with +95 101 | # normalized case. It is set when the `_str_normcase` property is +96 102 | # accessed for the first time. It's used to implement `__eq__()` +97 103 | # `__hash__()`, and `_parts_normcase` +98 104 | '_str_normcase_cached', +99 |- +100 |- # The `_parts_normcase_cached` slot stores the case-normalized +101 |- # string path after splitting on path separators. It's set when the +102 |- # `_parts_normcase` property is accessed for the first time. It's used +103 |- # to implement comparison methods like `__lt__()`. +104 |- '_parts_normcase_cached', +105 |- +106 |- # The `_hash` slot stores the hash of the case-normalized string +107 |- # path. It's set when `__hash__()` is called for the first time. +108 |- '_hash', + 105 |+ '_tail_cached', +109 106 | ) +110 107 | +111 108 | # From cpython/Lib/pickletools.py + +RUF023.py:113:17: RUF023 [*] `ArgumentDescriptor.__slots__` is not sorted + | +111 | # From cpython/Lib/pickletools.py +112 | class ArgumentDescriptor(object): +113 | __slots__ = ( + | _________________^ +114 | | # name of descriptor record, also a module global name; a string +115 | | 'name', +116 | | +117 | | # length of argument, in bytes; an int; UP_TO_NEWLINE and +118 | | # TAKEN_FROM_ARGUMENT{1,4,8} are negative values for variable-length +119 | | # cases +120 | | 'n', +121 | | +122 | | # a function taking a file-like object, reading this kind of argument +123 | | # from the object at the current position, advancing the current +124 | | # position by n bytes, and returning the value of the argument +125 | | 'reader', +126 | | +127 | | # human-readable docs for this arg descriptor; a string +128 | | 'doc', +129 | | ) + | |_____^ RUF023 +130 | +131 | #################################### + | + = help: Apply a natural sort to `ArgumentDescriptor.__slots__` + +ℹ Safe fix +111 111 | # From cpython/Lib/pickletools.py +112 112 | class ArgumentDescriptor(object): +113 113 | __slots__ = ( +114 |- # name of descriptor record, also a module global name; a string +115 |- 'name', +116 |- + 114 |+ # human-readable docs for this arg descriptor; a string + 115 |+ 'doc', +117 116 | # length of argument, in bytes; an int; UP_TO_NEWLINE and +118 117 | # TAKEN_FROM_ARGUMENT{1,4,8} are negative values for variable-length +119 118 | # cases +120 119 | 'n', +121 |- + 120 |+ # name of descriptor record, also a module global name; a string + 121 |+ 'name', +122 122 | # a function taking a file-like object, reading this kind of argument +123 123 | # from the object at the current position, advancing the current +124 124 | # position by n bytes, and returning the value of the argument +125 125 | 'reader', +126 |- +127 |- # human-readable docs for this arg descriptor; a string +128 |- 'doc', +129 126 | ) +130 127 | +131 128 | #################################### + +RUF023.py:138:17: RUF023 `SlotUser.__slots__` is not sorted + | +136 | # Multiline dicts are out of scope. +137 | class SlotUser: +138 | __slots__ = {'power': 'measured in kilowatts', + | _________________^ +139 | | 'distance': 'measured in kilometers'} + | |______________________________________________________^ RUF023 +140 | +141 | class Klass5: + | + = help: Apply a natural sort to `SlotUser.__slots__` + +RUF023.py:142:22: RUF023 `Klass5.__match_args__` is not sorted + | +141 | class Klass5: +142 | __match_args__ = ( + | ______________________^ +143 | | "look", +144 | | ( +145 | | "a_veeeeeeeeeeeeeeeeeeery_long_parenthesized_item" +146 | | ), +147 | | ) + | |_____^ RUF023 +148 | __slots__ = ( +149 | "b", + | + = help: Apply a natural sort to `Klass5.__match_args__` + +RUF023.py:148:17: RUF023 `Klass5.__slots__` is not sorted + | +146 | ), +147 | ) +148 | __slots__ = ( + | _________________^ +149 | | "b", +150 | | (( +151 | | "c" +152 | | )), +153 | | "a" +154 | | ) + | |_____^ RUF023 +155 | __slots__ = ("don't" "care" "about", "__slots__" "with", "concatenated" "strings") + | + = help: Apply a natural sort to `Klass5.__slots__` + +RUF023.py:155:17: RUF023 `Klass5.__slots__` is not sorted + | +153 | "a" +154 | ) +155 | __slots__ = ("don't" "care" "about", "__slots__" "with", "concatenated" "strings") + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF023 +156 | +157 | ################################### + | + = help: Apply a natural sort to `Klass5.__slots__` + + diff --git a/ruff.schema.json b/ruff.schema.json index edafa4acf6ef3..023cfd6037d5f 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -3449,6 +3449,7 @@ "RUF020", "RUF021", "RUF022", + "RUF023", "RUF024", "RUF1", "RUF10", From e81976f754bcb0b2abf01f0361221ee8dc798f34 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon, 22 Jan 2024 08:00:16 -0500 Subject: [PATCH 20/31] Bump ignore from 0.4.21 to 0.4.22 (#9606) Bumps [ignore](https://github.com/BurntSushi/ripgrep) from 0.4.21 to 0.4.22.
Commits
  • 2c38975 ignore-0.4.22
  • c8e4a84 cli: prefix all non-fatal error messages with 'rg: '
  • b9c7749 ignore: fix reference cycle for compiled matchers
  • 67dd809 ignore: add some 'allow(dead_code)' annotations
  • e0a8567 complete/fish: improve shell completions for fish
  • 56c7ad1 ignore/types: add Lean
  • 2a4dba3 ignore/types: add meson.options
  • daa157b core: actually implement --sortr=path
  • 0096c74 grep-0.3.1
  • 8c48355 deps: bump grep-printer to 0.2.1
  • Additional commits viewable in compare view

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Signed-off-by: dependabot[bot] Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> --- Cargo.lock | 4 ++-- Cargo.toml | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 98684ec29f77e..7e28815d9c057 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -956,9 +956,9 @@ dependencies = [ [[package]] name = "ignore" -version = "0.4.21" +version = "0.4.22" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "747ad1b4ae841a78e8aba0d63adbfbeaea26b517b63705d47856b73015d27060" +checksum = "b46810df39e66e925525d6e38ce1e7f6e1d208f72dc39757880fcb66e2c58af1" dependencies = [ "crossbeam-deque", "globset", diff --git a/Cargo.toml b/Cargo.toml index 99d6bc4b9d931..5409f8c69b447 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -40,7 +40,7 @@ fs-err = { version ="2.11.0"} glob = { version = "0.3.1" } globset = { version = "0.4.14" } hexf-parse = { version ="0.2.1"} -ignore = { version = "0.4.21" } +ignore = { version = "0.4.22" } imara-diff ={ version = "0.1.5"} imperative = { version = "1.0.4" } indicatif ={ version = "0.17.7"} From 47b8a897e752c9f6be10fbef2b756dd7563388b3 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Mon, 22 Jan 2024 22:26:53 -0500 Subject: [PATCH 21/31] [`flake8-simplify`] Support inverted returns in `needless-bool` (`SIM103`) (#9619) Closes https://github.com/astral-sh/ruff/issues/9618. --- .../flake8_simplify/rules/needless_bool.rs | 112 ++++++++++++------ ...ke8_simplify__tests__SIM103_SIM103.py.snap | 25 +++- 2 files changed, 95 insertions(+), 42 deletions(-) diff --git a/crates/ruff_linter/src/rules/flake8_simplify/rules/needless_bool.rs b/crates/ruff_linter/src/rules/flake8_simplify/rules/needless_bool.rs index 4a7d6bedc6f23..fc64997661751 100644 --- a/crates/ruff_linter/src/rules/flake8_simplify/rules/needless_bool.rs +++ b/crates/ruff_linter/src/rules/flake8_simplify/rules/needless_bool.rs @@ -5,6 +5,7 @@ use ruff_python_semantic::analyze::typing::{is_sys_version_block, is_type_checki use ruff_text_size::{Ranged, TextRange}; use crate::checkers::ast::Checker; +use crate::fix::snippet::SourceCodeSnippet; /// ## What it does /// Checks for `if` statements that can be replaced with `bool`. @@ -30,7 +31,8 @@ use crate::checkers::ast::Checker; /// - [Python documentation: Truth Value Testing](https://docs.python.org/3/library/stdtypes.html#truth-value-testing) #[violation] pub struct NeedlessBool { - condition: String, + condition: SourceCodeSnippet, + replacement: Option, } impl Violation for NeedlessBool { @@ -38,13 +40,24 @@ impl Violation for NeedlessBool { #[derive_message_formats] fn message(&self) -> String { - let NeedlessBool { condition } = self; - format!("Return the condition `{condition}` directly") + let NeedlessBool { condition, .. } = self; + if let Some(condition) = condition.full_display() { + format!("Return the condition `{condition}` directly") + } else { + format!("Return the condition directly") + } } fn fix_title(&self) -> Option { - let NeedlessBool { condition } = self; - Some(format!("Replace with `return {condition}`")) + let NeedlessBool { replacement, .. } = self; + if let Some(replacement) = replacement + .as_ref() + .and_then(SourceCodeSnippet::full_display) + { + Some(format!("Replace with `{replacement}`")) + } else { + Some(format!("Inline condition")) + } } } @@ -90,11 +103,20 @@ pub(crate) fn needless_bool(checker: &mut Checker, stmt_if: &ast::StmtIf) { return; }; - // If the branches have the same condition, abort (although the code could be - // simplified). - if if_return == else_return { - return; - } + // Determine whether the return values are inverted, as in: + // ```python + // if x > 0: + // return False + // else: + // return True + // ``` + let inverted = match (if_return, else_return) { + (Bool::True, Bool::False) => false, + (Bool::False, Bool::True) => true, + // If the branches have the same condition, abort (although the code could be + // simplified). + _ => return, + }; // Avoid suggesting ternary for `if sys.version_info >= ...`-style checks. if is_sys_version_block(stmt_if, checker.semantic()) { @@ -106,33 +128,38 @@ pub(crate) fn needless_bool(checker: &mut Checker, stmt_if: &ast::StmtIf) { return; } - let condition = checker.generator().expr(if_test); - let mut diagnostic = Diagnostic::new(NeedlessBool { condition }, range); - if matches!(if_return, Bool::True) - && matches!(else_return, Bool::False) - && !checker.indexer().has_comments(&range, checker.locator()) - && (if_test.is_compare_expr() || checker.semantic().is_builtin("bool")) - { - if if_test.is_compare_expr() { - // If the condition is a comparison, we can replace it with the condition. + let condition = checker.locator().slice(if_test); + let replacement = if checker.indexer().has_comments(&range, checker.locator()) { + None + } else { + // If the return values are inverted, wrap the condition in a `not`. + if inverted { + let node = ast::StmtReturn { + value: Some(Box::new(Expr::UnaryOp(ast::ExprUnaryOp { + op: ast::UnaryOp::Not, + operand: Box::new(if_test.clone()), + range: TextRange::default(), + }))), + range: TextRange::default(), + }; + Some(checker.generator().stmt(&node.into())) + } else if if_test.is_compare_expr() { + // If the condition is a comparison, we can replace it with the condition, since we + // know it's a boolean. let node = ast::StmtReturn { value: Some(Box::new(if_test.clone())), range: TextRange::default(), }; - diagnostic.set_fix(Fix::unsafe_edit(Edit::range_replacement( - checker.generator().stmt(&node.into()), - range, - ))); - } else { - // Otherwise, we need to wrap the condition in a call to `bool`. (We've already - // verified, above, that `bool` is a builtin.) - let node = ast::ExprName { + Some(checker.generator().stmt(&node.into())) + } else if checker.semantic().is_builtin("bool") { + // Otherwise, we need to wrap the condition in a call to `bool`. + let func_node = ast::ExprName { id: "bool".into(), ctx: ExprContext::Load, range: TextRange::default(), }; - let node1 = ast::ExprCall { - func: Box::new(node.into()), + let value_node = ast::ExprCall { + func: Box::new(func_node.into()), arguments: Arguments { args: vec![if_test.clone()], keywords: vec![], @@ -140,15 +167,28 @@ pub(crate) fn needless_bool(checker: &mut Checker, stmt_if: &ast::StmtIf) { }, range: TextRange::default(), }; - let node2 = ast::StmtReturn { - value: Some(Box::new(node1.into())), + let return_node = ast::StmtReturn { + value: Some(Box::new(value_node.into())), range: TextRange::default(), }; - diagnostic.set_fix(Fix::unsafe_edit(Edit::range_replacement( - checker.generator().stmt(&node2.into()), - range, - ))); - }; + Some(checker.generator().stmt(&return_node.into())) + } else { + None + } + }; + + let mut diagnostic = Diagnostic::new( + NeedlessBool { + condition: SourceCodeSnippet::from_str(condition), + replacement: replacement.clone().map(SourceCodeSnippet::new), + }, + range, + ); + if let Some(replacement) = replacement { + diagnostic.set_fix(Fix::unsafe_edit(Edit::range_replacement( + replacement, + range, + ))); } checker.diagnostics.push(diagnostic); } diff --git a/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM103_SIM103.py.snap b/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM103_SIM103.py.snap index 929549a3e3db3..174d22184c7b4 100644 --- a/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM103_SIM103.py.snap +++ b/crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM103_SIM103.py.snap @@ -12,7 +12,7 @@ SIM103.py:3:5: SIM103 [*] Return the condition `a` directly 6 | | return False | |____________________^ SIM103 | - = help: Replace with `return a` + = help: Replace with `return bool(a)` ℹ Unsafe fix 1 1 | def f(): @@ -63,7 +63,7 @@ SIM103.py:21:5: SIM103 [*] Return the condition `b` directly 24 | | return False | |____________________^ SIM103 | - = help: Replace with `return b` + = help: Replace with `return bool(b)` ℹ Unsafe fix 18 18 | # SIM103 @@ -89,7 +89,7 @@ SIM103.py:32:9: SIM103 [*] Return the condition `b` directly 35 | | return False | |________________________^ SIM103 | - = help: Replace with `return b` + = help: Replace with `return bool(b)` ℹ Unsafe fix 29 29 | if a: @@ -104,7 +104,7 @@ SIM103.py:32:9: SIM103 [*] Return the condition `b` directly 37 34 | 38 35 | def f(): -SIM103.py:57:5: SIM103 Return the condition `a` directly +SIM103.py:57:5: SIM103 [*] Return the condition `a` directly | 55 | def f(): 56 | # SIM103 (but not fixable) @@ -115,7 +115,20 @@ SIM103.py:57:5: SIM103 Return the condition `a` directly 60 | | return True | |___________________^ SIM103 | - = help: Replace with `return a` + = help: Replace with `return not a` + +ℹ Unsafe fix +54 54 | +55 55 | def f(): +56 56 | # SIM103 (but not fixable) +57 |- if a: +58 |- return False +59 |- else: +60 |- return True + 57 |+ return not a +61 58 | +62 59 | +63 60 | def f(): SIM103.py:83:5: SIM103 Return the condition `a` directly | @@ -128,6 +141,6 @@ SIM103.py:83:5: SIM103 Return the condition `a` directly 86 | | return False | |____________________^ SIM103 | - = help: Replace with `return a` + = help: Inline condition From 395bf3dc98a726eed64280211f06e92b3e309467 Mon Sep 17 00:00:00 2001 From: Micha Reiser Date: Tue, 23 Jan 2024 11:40:23 +0100 Subject: [PATCH 22/31] Fix the input for black's line ranges test file (#9622) --- .../fixtures/black/cases/line_ranges_basic.py | 1 + .../black/cases/line_ranges_diff_edge_case.py | 1 + .../black/cases/line_ranges_fmt_off.py | 1 + .../cases/line_ranges_fmt_off_decorator.py | 1 + .../cases/line_ranges_fmt_off_overlap.py | 1 + .../black/cases/line_ranges_imports.py | 1 + .../black/cases/line_ranges_imports.py.expect | 1 + .../black/cases/line_ranges_indentation.py | 1 + .../black/cases/line_ranges_two_passes.py | 1 + .../black/cases/line_ranges_unwrapping.py | 1 + .../test/fixtures/import_black_tests.py | 4 ++ ...atibility@cases__line_ranges_basic.py.snap | 30 +++++----- ...@cases__line_ranges_diff_edge_case.py.snap | 9 +-- ...ibility@cases__line_ranges_fmt_off.py.snap | 9 +-- ...ses__line_ranges_fmt_off_decorator.py.snap | 9 ++- ...cases__line_ranges_fmt_off_overlap.py.snap | 6 +- ...ity@cases__line_ranges_indentation.py.snap | 9 +-- ...lity@cases__line_ranges_two_passes.py.snap | 9 +-- ...lity@cases__line_ranges_unwrapping.py.snap | 60 ------------------- 19 files changed, 49 insertions(+), 106 deletions(-) delete mode 100644 crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_unwrapping.py.snap diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_basic.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_basic.py index 40d0f7053b9e2..c39bb99bcf5a7 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_basic.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_basic.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=5-6 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. def foo1(parameter_1, parameter_2, parameter_3, parameter_4, parameter_5, parameter_6, parameter_7): pass diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_diff_edge_case.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_diff_edge_case.py index 17613eb8dbe18..5d12238287711 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_diff_edge_case.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_diff_edge_case.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=10-11 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off.py index bcb36284a844e..593f7fa3732e8 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=7-7 --line-ranges=17-23 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_decorator.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_decorator.py index 8ae63e21716b8..39bb390f55f7f 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_decorator.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_decorator.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=12-12 --line-ranges=21-21 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_overlap.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_overlap.py index 4d3db25824c64..44156461e4354 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_overlap.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_fmt_off_overlap.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=11-17 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py index 0e516f28226c3..76b18ffecb3c3 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=8-8 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py.expect b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py.expect index 0e516f28226c3..76b18ffecb3c3 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py.expect +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_imports.py.expect @@ -1,3 +1,4 @@ +# flags: --line-ranges=8-8 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_indentation.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_indentation.py index ee2269d06102d..efc5c63c2f2e1 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_indentation.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_indentation.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=5-5 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. if cond1: diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_two_passes.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_two_passes.py index c8a57fdf77aef..ac6e696944e20 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_two_passes.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_two_passes.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=9-11 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_unwrapping.py b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_unwrapping.py index c5db777884258..c436c2543b63a 100644 --- a/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_unwrapping.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_unwrapping.py @@ -1,3 +1,4 @@ +# flags: --line-ranges=5-5 --line-ranges=9-9 --line-ranges=13-13 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. alist = [ diff --git a/crates/ruff_python_formatter/resources/test/fixtures/import_black_tests.py b/crates/ruff_python_formatter/resources/test/fixtures/import_black_tests.py index 552a1fe8b255f..5d8c7ecbd2b84 100755 --- a/crates/ruff_python_formatter/resources/test/fixtures/import_black_tests.py +++ b/crates/ruff_python_formatter/resources/test/fixtures/import_black_tests.py @@ -45,6 +45,10 @@ def import_fixture(fixture: Path, fixture_set: str): if "--pyi" in flags: extension = "pyi" + if "--line-ranges=" in flags: + # Black preserves the flags for line-ranges tests to not mess up the line numbers + input.insert(0, flags) + if "--line-length=" in flags: [_, length_and_rest] = flags.split("--line-length=", 1) length = length_and_rest.split(" ", 1)[0] diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_basic.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_basic.py.snap index a37d5fec5ad81..54479133baffc 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_basic.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_basic.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=5-6 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. def foo1(parameter_1, parameter_2, parameter_3, parameter_4, parameter_5, parameter_6, parameter_7): pass @@ -52,8 +53,8 @@ async def test_async_unformatted( ): # Trailing comment with extra leading ```diff --- Black +++ Ruff -@@ -1,7 +1,17 @@ --# flags: --line-ranges=5-6 +@@ -1,7 +1,18 @@ + # flags: --line-ranges=5-6 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. -def foo1(parameter_1, parameter_2, parameter_3, parameter_4, parameter_5, parameter_6, parameter_7): pass @@ -72,7 +73,7 @@ async def test_async_unformatted( ): # Trailing comment with extra leading def foo2( parameter_1, parameter_2, -@@ -26,38 +36,52 @@ +@@ -26,38 +37,52 @@ pass @@ -96,7 +97,16 @@ async def test_async_unformatted( ): # Trailing comment with extra leading - pass + # Incorrectly indented prefix comments. + pass -+ + +-import typing +-from typing import ( +- Any , +- ) +-class MyClass( object): # Trailing comment with extra leading space. +- #NOTE: The following indentation is incorrect: +- @decor( 1 * 3 ) +- def my_func( arg): +- pass +import typing +from typing import ( + Any, @@ -109,16 +119,6 @@ async def test_async_unformatted( ): # Trailing comment with extra leading + def my_func(arg): + pass --import typing --from typing import ( -- Any , -- ) --class MyClass( object): # Trailing comment with extra leading space. -- #NOTE: The following indentation is incorrect: -- @decor( 1 * 3 ) -- def my_func( arg): -- pass - -try: # Trailing comment with extra leading space. - for i in range(10): # Trailing comment with extra leading space. - while condition: @@ -128,6 +128,7 @@ async def test_async_unformatted( ): # Trailing comment with extra leading - then_something_else( ) -except ValueError as e: - unformatted( ) ++ +try: # Trailing comment with extra leading space. + for i in range(10): # Trailing comment with extra leading space. + while condition: @@ -157,6 +158,7 @@ async def test_async_unformatted( ): # Trailing comment with extra leading ## Ruff Output ```python +# flags: --line-ranges=5-6 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. def foo1( diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_diff_edge_case.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_diff_edge_case.py.snap index ee8fb11d45870..332b54ba9cff7 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_diff_edge_case.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_diff_edge_case.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=10-11 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. @@ -24,12 +25,7 @@ print ( "format me" ) ```diff --- Black +++ Ruff -@@ -1,4 +1,3 @@ --# flags: --line-ranges=10-11 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= - # flag above as it's formatting specifically these lines. - -@@ -6,8 +5,8 @@ +@@ -6,7 +6,8 @@ # This can be fixed in the future if we use a better diffing algorithm, or make Black # perform formatting in a single pass. @@ -44,6 +40,7 @@ print ( "format me" ) ## Ruff Output ```python +# flags: --line-ranges=10-11 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off.py.snap index 119237fb5d4af..201f97f8f8c07 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=7-7 --line-ranges=17-23 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. @@ -34,12 +35,7 @@ def myfunc( ): # This will be reformatted. ```diff --- Black +++ Ruff -@@ -1,4 +1,3 @@ --# flags: --line-ranges=7-7 --line-ranges=17-23 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= - # flag above as it's formatting specifically these lines. - -@@ -9,8 +8,10 @@ +@@ -9,8 +9,10 @@ # fmt: on @@ -57,6 +53,7 @@ def myfunc( ): # This will be reformatted. ## Ruff Output ```python +# flags: --line-ranges=7-7 --line-ranges=17-23 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_decorator.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_decorator.py.snap index d14b92cc08c31..f52235b48b6cc 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_decorator.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_decorator.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=12-12 --line-ranges=21-21 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. @@ -32,10 +33,7 @@ class MyClass: ```diff --- Black +++ Ruff -@@ -1,15 +1,13 @@ --# flags: --line-ranges=12-12 --line-ranges=21-21 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= - # flag above as it's formatting specifically these lines. +@@ -4,12 +4,11 @@ # Regression test for an edge case involving decorators and fmt: off/on. class MyClass: @@ -49,7 +47,7 @@ class MyClass: @decor( a=1, -@@ -18,4 +16,4 @@ +@@ -18,4 +17,4 @@ # fmt: on ) def func(): @@ -60,6 +58,7 @@ class MyClass: ## Ruff Output ```python +# flags: --line-ranges=12-12 --line-ranges=21-21 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_overlap.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_overlap.py.snap index 5130df3f7cd32..9150aaa8a21c4 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_overlap.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_fmt_off_overlap.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=11-17 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. @@ -28,9 +29,7 @@ def myfunc( ): # This will be reformatted. ```diff --- Black +++ Ruff -@@ -1,10 +1,11 @@ --# flags: --line-ranges=11-17 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= +@@ -3,8 +3,10 @@ # flag above as it's formatting specifically these lines. @@ -48,6 +47,7 @@ def myfunc( ): # This will be reformatted. ## Ruff Output ```python +# flags: --line-ranges=11-17 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_indentation.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_indentation.py.snap index 53fac2515565b..49f472b8c6905 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_indentation.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_indentation.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=5-5 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. if cond1: @@ -23,12 +24,7 @@ if another_cond: ```diff --- Black +++ Ruff -@@ -1,4 +1,3 @@ --# flags: --line-ranges=5-5 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= - # flag above as it's formatting specifically these lines. - if cond1: -@@ -9,4 +8,4 @@ +@@ -9,4 +9,4 @@ print("else") if another_cond: @@ -39,6 +35,7 @@ if another_cond: ## Ruff Output ```python +# flags: --line-ranges=5-5 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. if cond1: diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_two_passes.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_two_passes.py.snap index b12db8172060f..5a8eb36ddc2fc 100644 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_two_passes.py.snap +++ b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_two_passes.py.snap @@ -5,6 +5,7 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/lin ## Input ```python +# flags: --line-ranges=9-11 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. @@ -24,12 +25,7 @@ def restrict_to_this_line(arg1, ```diff --- Black +++ Ruff -@@ -1,4 +1,3 @@ --# flags: --line-ranges=9-11 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= - # flag above as it's formatting specifically these lines. - -@@ -7,5 +6,7 @@ +@@ -7,5 +7,7 @@ def restrict_to_this_line(arg1, arg2, arg3): @@ -44,6 +40,7 @@ def restrict_to_this_line(arg1, ## Ruff Output ```python +# flags: --line-ranges=9-11 # NOTE: If you need to modify this file, pay special attention to the --line-ranges= # flag above as it's formatting specifically these lines. diff --git a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_unwrapping.py.snap b/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_unwrapping.py.snap deleted file mode 100644 index 02466fbfa2f8a..0000000000000 --- a/crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__line_ranges_unwrapping.py.snap +++ /dev/null @@ -1,60 +0,0 @@ ---- -source: crates/ruff_python_formatter/tests/fixtures.rs -input_file: crates/ruff_python_formatter/resources/test/fixtures/black/cases/line_ranges_unwrapping.py ---- -## Input - -```python -# NOTE: If you need to modify this file, pay special attention to the --line-ranges= -# flag above as it's formatting specifically these lines. -alist = [ - 1, 2 -] - -adict = { - "key" : "value" -} - -func_call ( - arg = value -) -``` - -## Black Differences - -```diff ---- Black -+++ Ruff -@@ -1,4 +1,3 @@ --# flags: --line-ranges=5-5 --line-ranges=9-9 --line-ranges=13-13 - # NOTE: If you need to modify this file, pay special attention to the --line-ranges= - # flag above as it's formatting specifically these lines. - alist = [1, 2] -``` - -## Ruff Output - -```python -# NOTE: If you need to modify this file, pay special attention to the --line-ranges= -# flag above as it's formatting specifically these lines. -alist = [1, 2] - -adict = {"key": "value"} - -func_call(arg=value) -``` - -## Black Output - -```python -# flags: --line-ranges=5-5 --line-ranges=9-9 --line-ranges=13-13 -# NOTE: If you need to modify this file, pay special attention to the --line-ranges= -# flag above as it's formatting specifically these lines. -alist = [1, 2] - -adict = {"key": "value"} - -func_call(arg=value) -``` - - From eab1a6862b9dd09cfdc6818bd09556d2bcd8aa3d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Mikko=20Lepp=C3=A4nen?= Date: Wed, 24 Jan 2024 04:15:38 +0200 Subject: [PATCH 23/31] [`ruff`] Detect unnecessary `dict` comprehensions for iterables (`RUF025`) (#9613) ## Summary Checks for unnecessary `dict` comprehension when creating a new dictionary from iterable. Suggest to replace with `dict.fromkeys(iterable)` See: https://github.com/astral-sh/ruff/issues/9592 ## Test Plan ```bash cargo test ``` --- .../resources/test/fixtures/ruff/RUF025.py | 92 ++++++++ .../src/checkers/ast/analyze/expression.rs | 6 + crates/ruff_linter/src/codes.rs | 1 + ...flake8_executable__tests__EXE001_1.py.snap | 1 - ...flake8_executable__tests__EXE002_1.py.snap | 2 - crates/ruff_linter/src/rules/ruff/mod.rs | 1 + .../ruff_linter/src/rules/ruff/rules/mod.rs | 2 + ...cessary_dict_comprehension_for_iterable.rs | 179 +++++++++++++++ ..._rules__ruff__tests__RUF025_RUF025.py.snap | 206 ++++++++++++++++++ ruff.schema.json | 1 + 10 files changed, 488 insertions(+), 3 deletions(-) create mode 100644 crates/ruff_linter/resources/test/fixtures/ruff/RUF025.py create mode 100644 crates/ruff_linter/src/rules/ruff/rules/unnecessary_dict_comprehension_for_iterable.rs create mode 100644 crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF025_RUF025.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/ruff/RUF025.py b/crates/ruff_linter/resources/test/fixtures/ruff/RUF025.py new file mode 100644 index 0000000000000..8f971d2bf1f53 --- /dev/null +++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF025.py @@ -0,0 +1,92 @@ +# Violation cases: RUF025 + + +def func(): + numbers = [1, 2, 3] + {n: None for n in numbers} # RUF025 + + +def func(): + for key, value in {n: 1 for n in [1, 2, 3]}.items(): # RUF025 + pass + + +def func(): + {n: 1.1 for n in [1, 2, 3]} # RUF025 + + +def func(): + {n: complex(3, 5) for n in [1, 2, 3]} # RUF025 + + +def func(): + def f(data): + return data + + f({c: "a" for c in "12345"}) # RUF025 + + +def func(): + {n: True for n in [1, 2, 2]} # RUF025 + + +def func(): + {n: b"hello" for n in (1, 2, 2)} # RUF025 + + +def func(): + {n: ... for n in [1, 2, 3]} # RUF025 + + +def func(): + {n: False for n in {1: "a", 2: "b"}} # RUF025 + + +def func(): + {(a, b): 1 for (a, b) in [(1, 2), (3, 4)]} # RUF025 + + +def func(): + def f(): + return 1 + + a = f() + {n: a for n in [1, 2, 3]} # RUF025 + + +def func(): + values = ["a", "b", "c"] + [{n: values for n in [1, 2, 3]}] # RUF025 + + +# Non-violation cases: RUF025 + + +def func(): + {n: 1 for n in [1, 2, 3, 4, 5] if n < 3} # OK + + +def func(): + {n: 1 for c in [1, 2, 3, 4, 5] for n in [1, 2, 3] if c < 3} # OK + + +def func(): + def f(): + pass + + {n: f() for n in [1, 2, 3]} # OK + + +def func(): + {n: n for n in [1, 2, 3, 4, 5]} # OK + + +def func(): + def f(): + return {n: 1 for c in [1, 2, 3, 4, 5] for n in [1, 2, 3]} # OK + + f() + + +def func(): + {(a, b): a + b for (a, b) in [(1, 2), (3, 4)]} # OK diff --git a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs index 7f83db9f250b3..da840cb3071d6 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs @@ -1422,11 +1422,17 @@ pub(crate) fn expression(expr: &Expr, checker: &mut Checker) { if checker.enabled(Rule::UnnecessaryDictIndexLookup) { pylint::rules::unnecessary_dict_index_lookup_comprehension(checker, expr); } + if checker.enabled(Rule::UnnecessaryComprehension) { flake8_comprehensions::rules::unnecessary_dict_comprehension( checker, expr, key, value, generators, ); } + + if checker.enabled(Rule::UnnecessaryDictComprehensionForIterable) { + ruff::rules::unnecessary_dict_comprehension_for_iterable(checker, dict_comp); + } + if checker.enabled(Rule::FunctionUsesLoopVariable) { flake8_bugbear::rules::function_uses_loop_variable(checker, &Node::Expr(expr)); } diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs index a049589958739..de80c5dfc0668 100644 --- a/crates/ruff_linter/src/codes.rs +++ b/crates/ruff_linter/src/codes.rs @@ -928,6 +928,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> { (Ruff, "022") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderAll), (Ruff, "023") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderSlots), (Ruff, "024") => (RuleGroup::Preview, rules::ruff::rules::MutableFromkeysValue), + (Ruff, "025") => (RuleGroup::Preview, rules::ruff::rules::UnnecessaryDictComprehensionForIterable), (Ruff, "100") => (RuleGroup::Stable, rules::ruff::rules::UnusedNOQA), (Ruff, "200") => (RuleGroup::Stable, rules::ruff::rules::InvalidPyprojectToml), diff --git a/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE001_1.py.snap b/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE001_1.py.snap index 0a58f7dfccd1f..ba870fb9657b3 100644 --- a/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE001_1.py.snap +++ b/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE001_1.py.snap @@ -9,4 +9,3 @@ EXE001_1.py:1:1: EXE001 Shebang is present but file is not executable 3 | if __name__ == '__main__': | - diff --git a/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE002_1.py.snap b/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE002_1.py.snap index 8f47999522a75..2ca899f1c27d6 100644 --- a/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE002_1.py.snap +++ b/crates/ruff_linter/src/rules/flake8_executable/snapshots/ruff_linter__rules__flake8_executable__tests__EXE002_1.py.snap @@ -7,5 +7,3 @@ EXE002_1.py:1:1: EXE002 The file is executable but no shebang is present | EXE002 2 | print('I should be executable.') | - - diff --git a/crates/ruff_linter/src/rules/ruff/mod.rs b/crates/ruff_linter/src/rules/ruff/mod.rs index 26abe0ae8a93c..cb2b61a0cb255 100644 --- a/crates/ruff_linter/src/rules/ruff/mod.rs +++ b/crates/ruff_linter/src/rules/ruff/mod.rs @@ -45,6 +45,7 @@ mod tests { #[test_case(Rule::UnsortedDunderAll, Path::new("RUF022.py"))] #[test_case(Rule::UnsortedDunderSlots, Path::new("RUF023.py"))] #[test_case(Rule::MutableFromkeysValue, Path::new("RUF024.py"))] + #[test_case(Rule::UnnecessaryDictComprehensionForIterable, Path::new("RUF025.py"))] fn rules(rule_code: Rule, path: &Path) -> Result<()> { let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy()); let diagnostics = test_path( diff --git a/crates/ruff_linter/src/rules/ruff/rules/mod.rs b/crates/ruff_linter/src/rules/ruff/rules/mod.rs index 58324facbc6ad..08bfef31c286c 100644 --- a/crates/ruff_linter/src/rules/ruff/rules/mod.rs +++ b/crates/ruff_linter/src/rules/ruff/rules/mod.rs @@ -17,6 +17,7 @@ pub(crate) use quadratic_list_summation::*; pub(crate) use sort_dunder_all::*; pub(crate) use sort_dunder_slots::*; pub(crate) use static_key_dict_comprehension::*; +pub(crate) use unnecessary_dict_comprehension_for_iterable::*; pub(crate) use unnecessary_iterable_allocation_for_first_element::*; pub(crate) use unnecessary_key_check::*; pub(crate) use unused_noqa::*; @@ -42,6 +43,7 @@ mod sequence_sorting; mod sort_dunder_all; mod sort_dunder_slots; mod static_key_dict_comprehension; +mod unnecessary_dict_comprehension_for_iterable; mod unnecessary_iterable_allocation_for_first_element; mod unnecessary_key_check; mod unused_noqa; diff --git a/crates/ruff_linter/src/rules/ruff/rules/unnecessary_dict_comprehension_for_iterable.rs b/crates/ruff_linter/src/rules/ruff/rules/unnecessary_dict_comprehension_for_iterable.rs new file mode 100644 index 0000000000000..6adc4f69038c9 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/rules/unnecessary_dict_comprehension_for_iterable.rs @@ -0,0 +1,179 @@ +use ast::ExprName; +use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::comparable::ComparableExpr; +use ruff_python_ast::helpers::any_over_expr; +use ruff_python_ast::{self as ast, Arguments, Comprehension, Expr, ExprCall, ExprContext}; +use ruff_text_size::{Ranged, TextRange}; + +use crate::checkers::ast::Checker; + +/// ## What it does +/// Checks for unnecessary `dict` comprehension when creating a dictionary from +/// an iterable. +/// +/// ## Why is this bad? +/// It's unnecessary to use a `dict` comprehension to build a dictionary from +/// an iterable when the value is static. +/// +/// Prefer `dict.fromkeys(iterable)` over `{value: None for value in iterable}`, +/// as `dict.fromkeys` is more readable and efficient. +/// +/// ## Examples +/// ```python +/// {a: None for a in iterable} +/// {a: 1 for a in iterable} +/// ``` +/// +/// Use instead: +/// ```python +/// dict.fromkeys(iterable) +/// dict.fromkeys(iterable, 1) +/// ``` +#[violation] +pub struct UnnecessaryDictComprehensionForIterable { + is_value_none_literal: bool, +} + +impl Violation for UnnecessaryDictComprehensionForIterable { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; + + #[derive_message_formats] + fn message(&self) -> String { + format!("Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead") + } + + fn fix_title(&self) -> Option { + if self.is_value_none_literal { + Some(format!("Replace with `dict.fromkeys(iterable, value)`)")) + } else { + Some(format!("Replace with `dict.fromkeys(iterable)`)")) + } + } +} + +/// RUF025 +pub(crate) fn unnecessary_dict_comprehension_for_iterable( + checker: &mut Checker, + dict_comp: &ast::ExprDictComp, +) { + let [generator] = dict_comp.generators.as_slice() else { + return; + }; + + // Don't suggest `dict.fromkeys` for: + // - async generator expressions, because `dict.fromkeys` is not async. + // - nested generator expressions, because `dict.fromkeys` might be error-prone option at least for fixing. + // - generator expressions with `if` clauses, because `dict.fromkeys` might not be valid option. + if !generator.ifs.is_empty() { + return; + } + if generator.is_async { + return; + } + + // Don't suggest `dict.keys` if the target is not the same as the key. + if ComparableExpr::from(&generator.target) != ComparableExpr::from(dict_comp.key.as_ref()) { + return; + } + + // Don't suggest `dict.fromkeys` if the value is not a constant or constant-like. + if !is_constant_like(dict_comp.value.as_ref()) { + return; + } + + // Don't suggest `dict.fromkeys` if any of the expressions in the value are defined within + // the comprehension (e.g., by the target). + let self_referential = any_over_expr(dict_comp.value.as_ref(), &|expr| { + let Expr::Name(name) = expr else { + return false; + }; + + let Some(id) = checker.semantic().resolve_name(name) else { + return false; + }; + + let binding = checker.semantic().binding(id); + + dict_comp.range().contains_range(binding.range()) + }); + if self_referential { + return; + } + + let mut diagnostic = Diagnostic::new( + UnnecessaryDictComprehensionForIterable { + is_value_none_literal: dict_comp.value.is_none_literal_expr(), + }, + dict_comp.range(), + ); + + if checker.semantic().is_builtin("dict") { + diagnostic.set_fix(Fix::safe_edit(Edit::range_replacement( + checker + .generator() + .expr(&fix_unnecessary_dict_comprehension( + dict_comp.value.as_ref(), + generator, + )), + dict_comp.range(), + ))); + } + + checker.diagnostics.push(diagnostic); +} + +/// Returns `true` if the expression can be shared across multiple values. +/// +/// When converting from `{key: value for key in iterable}` to `dict.fromkeys(iterable, value)`, +/// the `value` is shared across all values without being evaluated multiple times. If the value +/// contains, e.g., a function call, it cannot be shared, as the function might have side effects. +/// Similarly, if the value contains a list comprehension, it cannot be shared, as `dict.fromkeys` +/// would leave each value with a reference to the same list. +fn is_constant_like(expr: &Expr) -> bool { + !any_over_expr(expr, &|expr| { + matches!( + expr, + Expr::Lambda(_) + | Expr::List(_) + | Expr::Dict(_) + | Expr::Set(_) + | Expr::ListComp(_) + | Expr::SetComp(_) + | Expr::DictComp(_) + | Expr::GeneratorExp(_) + | Expr::Await(_) + | Expr::Yield(_) + | Expr::YieldFrom(_) + | Expr::Call(_) + | Expr::NamedExpr(_) + ) + }) +} + +/// Generate a [`Fix`] to replace `dict` comprehension with `dict.fromkeys`. +/// +/// For example: +/// - Given `{n: None for n in [1,2,3]}`, generate `dict.fromkeys([1,2,3])`. +/// - Given `{n: 1 for n in [1,2,3]}`, generate `dict.fromkeys([1,2,3], 1)`. +fn fix_unnecessary_dict_comprehension(value: &Expr, generator: &Comprehension) -> Expr { + let iterable = generator.iter.clone(); + let args = Arguments { + args: if value.is_none_literal_expr() { + vec![iterable] + } else { + vec![iterable, value.clone()] + }, + keywords: vec![], + range: TextRange::default(), + }; + Expr::Call(ExprCall { + func: Box::new(Expr::Name(ExprName { + id: "dict.fromkeys".into(), + ctx: ExprContext::Load, + range: TextRange::default(), + })), + arguments: args, + range: TextRange::default(), + }) +} diff --git a/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF025_RUF025.py.snap b/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF025_RUF025.py.snap new file mode 100644 index 0000000000000..519fb1b801390 --- /dev/null +++ b/crates/ruff_linter/src/rules/ruff/snapshots/ruff_linter__rules__ruff__tests__RUF025_RUF025.py.snap @@ -0,0 +1,206 @@ +--- +source: crates/ruff_linter/src/rules/ruff/mod.rs +--- +RUF025.py:6:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +4 | def func(): +5 | numbers = [1, 2, 3] +6 | {n: None for n in numbers} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable, value)`) + +ℹ Safe fix +3 3 | +4 4 | def func(): +5 5 | numbers = [1, 2, 3] +6 |- {n: None for n in numbers} # RUF025 + 6 |+ dict.fromkeys(numbers) # RUF025 +7 7 | +8 8 | +9 9 | def func(): + +RUF025.py:10:23: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | + 9 | def func(): +10 | for key, value in {n: 1 for n in [1, 2, 3]}.items(): # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 +11 | pass + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +7 7 | +8 8 | +9 9 | def func(): +10 |- for key, value in {n: 1 for n in [1, 2, 3]}.items(): # RUF025 + 10 |+ for key, value in dict.fromkeys([1, 2, 3], 1).items(): # RUF025 +11 11 | pass +12 12 | +13 13 | + +RUF025.py:15:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +14 | def func(): +15 | {n: 1.1 for n in [1, 2, 3]} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +12 12 | +13 13 | +14 14 | def func(): +15 |- {n: 1.1 for n in [1, 2, 3]} # RUF025 + 15 |+ dict.fromkeys([1, 2, 3], 1.1) # RUF025 +16 16 | +17 17 | +18 18 | def func(): + +RUF025.py:26:7: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +24 | return data +25 | +26 | f({c: "a" for c in "12345"}) # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +23 23 | def f(data): +24 24 | return data +25 25 | +26 |- f({c: "a" for c in "12345"}) # RUF025 + 26 |+ f(dict.fromkeys("12345", "a")) # RUF025 +27 27 | +28 28 | +29 29 | def func(): + +RUF025.py:30:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +29 | def func(): +30 | {n: True for n in [1, 2, 2]} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +27 27 | +28 28 | +29 29 | def func(): +30 |- {n: True for n in [1, 2, 2]} # RUF025 + 30 |+ dict.fromkeys([1, 2, 2], True) # RUF025 +31 31 | +32 32 | +33 33 | def func(): + +RUF025.py:34:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +33 | def func(): +34 | {n: b"hello" for n in (1, 2, 2)} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +31 31 | +32 32 | +33 33 | def func(): +34 |- {n: b"hello" for n in (1, 2, 2)} # RUF025 + 34 |+ dict.fromkeys((1, 2, 2), b"hello") # RUF025 +35 35 | +36 36 | +37 37 | def func(): + +RUF025.py:38:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +37 | def func(): +38 | {n: ... for n in [1, 2, 3]} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +35 35 | +36 36 | +37 37 | def func(): +38 |- {n: ... for n in [1, 2, 3]} # RUF025 + 38 |+ dict.fromkeys([1, 2, 3], ...) # RUF025 +39 39 | +40 40 | +41 41 | def func(): + +RUF025.py:42:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +41 | def func(): +42 | {n: False for n in {1: "a", 2: "b"}} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +39 39 | +40 40 | +41 41 | def func(): +42 |- {n: False for n in {1: "a", 2: "b"}} # RUF025 + 42 |+ dict.fromkeys({1: "a", 2: "b"}, False) # RUF025 +43 43 | +44 44 | +45 45 | def func(): + +RUF025.py:46:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +45 | def func(): +46 | {(a, b): 1 for (a, b) in [(1, 2), (3, 4)]} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +43 43 | +44 44 | +45 45 | def func(): +46 |- {(a, b): 1 for (a, b) in [(1, 2), (3, 4)]} # RUF025 + 46 |+ dict.fromkeys([(1, 2), (3, 4)], 1) # RUF025 +47 47 | +48 48 | +49 49 | def func(): + +RUF025.py:54:5: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +53 | a = f() +54 | {n: a for n in [1, 2, 3]} # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +51 51 | return 1 +52 52 | +53 53 | a = f() +54 |- {n: a for n in [1, 2, 3]} # RUF025 + 54 |+ dict.fromkeys([1, 2, 3], a) # RUF025 +55 55 | +56 56 | +57 57 | def func(): + +RUF025.py:59:6: RUF025 [*] Unnecessary dict comprehension for iterable; use `dict.fromkeys` instead + | +57 | def func(): +58 | values = ["a", "b", "c"] +59 | [{n: values for n in [1, 2, 3]}] # RUF025 + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RUF025 + | + = help: Replace with `dict.fromkeys(iterable)`) + +ℹ Safe fix +56 56 | +57 57 | def func(): +58 58 | values = ["a", "b", "c"] +59 |- [{n: values for n in [1, 2, 3]}] # RUF025 + 59 |+ [dict.fromkeys([1, 2, 3], values)] # RUF025 +60 60 | +61 61 | +62 62 | # Non-violation cases: RUF025 + + diff --git a/ruff.schema.json b/ruff.schema.json index 023cfd6037d5f..d2a0bea4ead5c 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -3451,6 +3451,7 @@ "RUF022", "RUF023", "RUF024", + "RUF025", "RUF1", "RUF10", "RUF100", From 57313d9d63af023b7c61c971ef13ead9fb803f34 Mon Sep 17 00:00:00 2001 From: Akira Noda <61897166+tsugumi-sys@users.noreply.github.com> Date: Wed, 24 Jan 2024 11:50:22 +0900 Subject: [PATCH 24/31] [`pylint`] Implement `assigning-non-slot` (`E0237`) (#9623) ## Summary Implement [assigning-non-slot / E0237](https://pylint.readthedocs.io/en/latest/user_guide/messages/error/assigning-non-slot.html) related #970 ## Test Plan `cargo test` --- .../fixtures/pylint/non_slot_assignment.py | 56 ++++ .../src/checkers/ast/analyze/statement.rs | 3 + crates/ruff_linter/src/codes.rs | 1 + crates/ruff_linter/src/rules/pylint/mod.rs | 1 + .../ruff_linter/src/rules/pylint/rules/mod.rs | 2 + .../rules/pylint/rules/non_slot_assignment.rs | 242 ++++++++++++++++++ ...tests__PLE0237_non_slot_assignment.py.snap | 31 +++ ruff.schema.json | 2 + 8 files changed, 338 insertions(+) create mode 100644 crates/ruff_linter/resources/test/fixtures/pylint/non_slot_assignment.py create mode 100644 crates/ruff_linter/src/rules/pylint/rules/non_slot_assignment.rs create mode 100644 crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0237_non_slot_assignment.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/pylint/non_slot_assignment.py b/crates/ruff_linter/resources/test/fixtures/pylint/non_slot_assignment.py new file mode 100644 index 0000000000000..c1ced1bbb80b1 --- /dev/null +++ b/crates/ruff_linter/resources/test/fixtures/pylint/non_slot_assignment.py @@ -0,0 +1,56 @@ +class StudentA: + __slots__ = ("name",) + + def __init__(self, name, surname): + self.name = name + self.surname = surname # [assigning-non-slot] + self.setup() + + def setup(self): + pass + + +class StudentB: + __slots__ = ("name", "surname") + + def __init__(self, name, middle_name): + self.name = name + self.middle_name = middle_name # [assigning-non-slot] + self.setup() + + def setup(self): + pass + + +class StudentC: + __slots__ = ("name", "surname") + + def __init__(self, name, surname): + self.name = name + self.surname = surname # OK + self.setup() + + def setup(self): + pass + + +class StudentD(object): + __slots__ = ("name", "surname") + + def __init__(self, name, middle_name): + self.name = name + self.middle_name = middle_name # [assigning-non-slot] + self.setup() + + def setup(self): + pass + + +class StudentE(StudentD): + def __init__(self, name, middle_name): + self.name = name + self.middle_name = middle_name # OK + self.setup() + + def setup(self): + pass diff --git a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs index 33ca106673198..a613625abd356 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs @@ -507,6 +507,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { if checker.enabled(Rule::NoSlotsInNamedtupleSubclass) { flake8_slots::rules::no_slots_in_namedtuple_subclass(checker, stmt, class_def); } + if checker.enabled(Rule::NonSlotAssignment) { + pylint::rules::non_slot_assignment(checker, class_def); + } if checker.enabled(Rule::SingleStringSlots) { pylint::rules::single_string_slots(checker, class_def); } diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs index de80c5dfc0668..f7c296a3ecc9c 100644 --- a/crates/ruff_linter/src/codes.rs +++ b/crates/ruff_linter/src/codes.rs @@ -224,6 +224,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> { (Pylint, "E0116") => (RuleGroup::Stable, rules::pylint::rules::ContinueInFinally), (Pylint, "E0117") => (RuleGroup::Stable, rules::pylint::rules::NonlocalWithoutBinding), (Pylint, "E0118") => (RuleGroup::Stable, rules::pylint::rules::LoadBeforeGlobalDeclaration), + (Pylint, "E0237") => (RuleGroup::Stable, rules::pylint::rules::NonSlotAssignment), (Pylint, "E0241") => (RuleGroup::Stable, rules::pylint::rules::DuplicateBases), (Pylint, "E0302") => (RuleGroup::Stable, rules::pylint::rules::UnexpectedSpecialMethodSignature), (Pylint, "E0307") => (RuleGroup::Stable, rules::pylint::rules::InvalidStrReturnType), diff --git a/crates/ruff_linter/src/rules/pylint/mod.rs b/crates/ruff_linter/src/rules/pylint/mod.rs index 5786e857f96b9..acae7be19e9ad 100644 --- a/crates/ruff_linter/src/rules/pylint/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/mod.rs @@ -92,6 +92,7 @@ mod tests { Path::new("named_expr_without_context.py") )] #[test_case(Rule::NonlocalWithoutBinding, Path::new("nonlocal_without_binding.py"))] + #[test_case(Rule::NonSlotAssignment, Path::new("non_slot_assignment.py"))] #[test_case(Rule::PropertyWithParameters, Path::new("property_with_parameters.py"))] #[test_case( Rule::RedefinedArgumentFromLocal, diff --git a/crates/ruff_linter/src/rules/pylint/rules/mod.rs b/crates/ruff_linter/src/rules/pylint/rules/mod.rs index 22be5657bd22d..2845943106d66 100644 --- a/crates/ruff_linter/src/rules/pylint/rules/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/rules/mod.rs @@ -41,6 +41,7 @@ pub(crate) use no_method_decorator::*; pub(crate) use no_self_use::*; pub(crate) use non_ascii_module_import::*; pub(crate) use non_ascii_name::*; +pub(crate) use non_slot_assignment::*; pub(crate) use nonlocal_without_binding::*; pub(crate) use potential_index_error::*; pub(crate) use property_with_parameters::*; @@ -124,6 +125,7 @@ mod no_method_decorator; mod no_self_use; mod non_ascii_module_import; mod non_ascii_name; +mod non_slot_assignment; mod nonlocal_without_binding; mod potential_index_error; mod property_with_parameters; diff --git a/crates/ruff_linter/src/rules/pylint/rules/non_slot_assignment.rs b/crates/ruff_linter/src/rules/pylint/rules/non_slot_assignment.rs new file mode 100644 index 0000000000000..db74a473bc816 --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/rules/non_slot_assignment.rs @@ -0,0 +1,242 @@ +use rustc_hash::FxHashSet; + +use ruff_diagnostics::{Diagnostic, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::{self as ast, Expr, Stmt}; +use ruff_text_size::{Ranged, TextRange}; + +use crate::checkers::ast::Checker; + +/// ## What it does +/// Checks for assignments to attributes that are not defined in `__slots__`. +/// +/// ## Why is this bad? +/// When using `__slots__`, only the specified attributes are allowed. +/// Attempting to assign to an attribute that is not defined in `__slots__` +/// will result in an `AttributeError` at runtime. +/// +/// ## Known problems +/// This rule can't detect `__slots__` implementations in superclasses, and +/// so limits its analysis to classes that inherit from (at most) `object`. +/// +/// ## Example +/// ```python +/// class Student: +/// __slots__ = ("name",) +/// +/// def __init__(self, name, surname): +/// self.name = name +/// self.surname = surname # [assigning-non-slot] +/// self.setup() +/// +/// def setup(self): +/// pass +/// ``` +/// +/// Use instead: +/// ```python +/// class Student: +/// __slots__ = ("name", "surname") +/// +/// def __init__(self, name, surname): +/// self.name = name +/// self.surname = surname +/// self.setup() +/// +/// def setup(self): +/// pass +/// ``` +#[violation] +pub struct NonSlotAssignment { + name: String, +} + +impl Violation for NonSlotAssignment { + #[derive_message_formats] + fn message(&self) -> String { + let NonSlotAssignment { name } = self; + format!("Attribute `{name}` is not defined in class's `__slots__`") + } +} + +/// E0237 +pub(crate) fn non_slot_assignment(checker: &mut Checker, class_def: &ast::StmtClassDef) { + // If the class inherits from another class (aside from `object`), then it's possible that + // the parent class defines the relevant `__slots__`. + if !class_def.bases().iter().all(|base| { + checker + .semantic() + .resolve_call_path(base) + .is_some_and(|call_path| matches!(call_path.as_slice(), ["", "object"])) + }) { + return; + } + + for attribute in is_attributes_not_in_slots(&class_def.body) { + checker.diagnostics.push(Diagnostic::new( + NonSlotAssignment { + name: attribute.name.to_string(), + }, + attribute.range(), + )); + } +} + +#[derive(Debug)] +struct AttributeAssignment<'a> { + /// The name of the attribute that is assigned to. + name: &'a str, + /// The range of the attribute that is assigned to. + range: TextRange, +} + +impl Ranged for AttributeAssignment<'_> { + fn range(&self) -> TextRange { + self.range + } +} + +/// Return a list of attributes that are assigned to but not included in `__slots__`. +fn is_attributes_not_in_slots(body: &[Stmt]) -> Vec { + // First, collect all the attributes that are assigned to `__slots__`. + let mut slots = FxHashSet::default(); + for statement in body { + match statement { + // Ex) `__slots__ = ("name",)` + Stmt::Assign(ast::StmtAssign { targets, value, .. }) => { + let [Expr::Name(ast::ExprName { id, .. })] = targets.as_slice() else { + continue; + }; + + if id == "__slots__" { + slots.extend(slots_attributes(value)); + } + } + + // Ex) `__slots__: Tuple[str, ...] = ("name",)` + Stmt::AnnAssign(ast::StmtAnnAssign { + target, + value: Some(value), + .. + }) => { + let Expr::Name(ast::ExprName { id, .. }) = target.as_ref() else { + continue; + }; + + if id == "__slots__" { + slots.extend(slots_attributes(value)); + } + } + + // Ex) `__slots__ += ("name",)` + Stmt::AugAssign(ast::StmtAugAssign { target, value, .. }) => { + let Expr::Name(ast::ExprName { id, .. }) = target.as_ref() else { + continue; + }; + + if id == "__slots__" { + slots.extend(slots_attributes(value)); + } + } + _ => {} + } + } + + if slots.is_empty() { + return vec![]; + } + + // Second, find any assignments that aren't included in `__slots__`. + let mut assignments = vec![]; + for statement in body { + let Stmt::FunctionDef(ast::StmtFunctionDef { name, body, .. }) = statement else { + continue; + }; + + if name == "__init__" { + for statement in body { + match statement { + // Ex) `self.name = name` + Stmt::Assign(ast::StmtAssign { targets, .. }) => { + let [Expr::Attribute(attribute)] = targets.as_slice() else { + continue; + }; + let Expr::Name(ast::ExprName { id, .. }) = attribute.value.as_ref() else { + continue; + }; + if id == "self" && !slots.contains(attribute.attr.as_str()) { + assignments.push(AttributeAssignment { + name: &attribute.attr, + range: attribute.range(), + }); + } + } + + // Ex) `self.name: str = name` + Stmt::AnnAssign(ast::StmtAnnAssign { target, .. }) => { + let Expr::Attribute(attribute) = target.as_ref() else { + continue; + }; + let Expr::Name(ast::ExprName { id, .. }) = attribute.value.as_ref() else { + continue; + }; + if id == "self" && !slots.contains(attribute.attr.as_str()) { + assignments.push(AttributeAssignment { + name: &attribute.attr, + range: attribute.range(), + }); + } + } + + // Ex) `self.name += name` + Stmt::AugAssign(ast::StmtAugAssign { target, .. }) => { + let Expr::Attribute(attribute) = target.as_ref() else { + continue; + }; + let Expr::Name(ast::ExprName { id, .. }) = attribute.value.as_ref() else { + continue; + }; + if id == "self" && !slots.contains(attribute.attr.as_str()) { + assignments.push(AttributeAssignment { + name: &attribute.attr, + range: attribute.range(), + }); + } + } + + _ => {} + } + } + } + } + + assignments +} + +/// Return an iterator over the attributes enumerated in the given `__slots__` value. +fn slots_attributes(expr: &Expr) -> impl Iterator { + // Ex) `__slots__ = ("name",)` + let elts_iter = match expr { + Expr::Tuple(ast::ExprTuple { elts, .. }) + | Expr::List(ast::ExprList { elts, .. }) + | Expr::Set(ast::ExprSet { elts, .. }) => Some(elts.iter().filter_map(|elt| match elt { + Expr::StringLiteral(ast::ExprStringLiteral { value, .. }) => Some(value.to_str()), + _ => None, + })), + _ => None, + }; + + // Ex) `__slots__ = {"name": ...}` + let keys_iter = match expr { + Expr::Dict(ast::ExprDict { keys, .. }) => Some(keys.iter().filter_map(|key| match key { + Some(Expr::StringLiteral(ast::ExprStringLiteral { value, .. })) => Some(value.to_str()), + _ => None, + })), + _ => None, + }; + + elts_iter + .into_iter() + .flatten() + .chain(keys_iter.into_iter().flatten()) +} diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0237_non_slot_assignment.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0237_non_slot_assignment.py.snap new file mode 100644 index 0000000000000..6b0fc3d4a2b77 --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLE0237_non_slot_assignment.py.snap @@ -0,0 +1,31 @@ +--- +source: crates/ruff_linter/src/rules/pylint/mod.rs +--- +non_slot_assignment.py:6:9: PLE0237 Attribute `surname` is not defined in class's `__slots__` + | +4 | def __init__(self, name, surname): +5 | self.name = name +6 | self.surname = surname # [assigning-non-slot] + | ^^^^^^^^^^^^ PLE0237 +7 | self.setup() + | + +non_slot_assignment.py:18:9: PLE0237 Attribute `middle_name` is not defined in class's `__slots__` + | +16 | def __init__(self, name, middle_name): +17 | self.name = name +18 | self.middle_name = middle_name # [assigning-non-slot] + | ^^^^^^^^^^^^^^^^ PLE0237 +19 | self.setup() + | + +non_slot_assignment.py:42:9: PLE0237 Attribute `middle_name` is not defined in class's `__slots__` + | +40 | def __init__(self, name, middle_name): +41 | self.name = name +42 | self.middle_name = middle_name # [assigning-non-slot] + | ^^^^^^^^^^^^^^^^ PLE0237 +43 | self.setup() + | + + diff --git a/ruff.schema.json b/ruff.schema.json index d2a0bea4ead5c..65a83ce31c241 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -3119,6 +3119,8 @@ "PLE0117", "PLE0118", "PLE02", + "PLE023", + "PLE0237", "PLE024", "PLE0241", "PLE03", From 87821252d70b6d54417ee0ec43cb863ec74f1588 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Tue, 23 Jan 2024 23:19:36 -0500 Subject: [PATCH 25/31] Update SchemaStore script to install npm dependencies (#9631) ## Summary SchemaStore now depends on some Prettier plugins, so we need to install Prettier and its plugins as part of the project (rather than relying on a global install). ## Test Plan Ran the script! --- scripts/update_schemastore.py | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/scripts/update_schemastore.py b/scripts/update_schemastore.py index b060db31c0ab8..949ff6822c592 100644 --- a/scripts/update_schemastore.py +++ b/scripts/update_schemastore.py @@ -17,7 +17,7 @@ root = Path( check_output(["git", "rev-parse", "--show-toplevel"], text=True).strip(), ) -ruff_json = Path("src/schemas/json/ruff.json") +ruff_json = Path("schemas/json/ruff.json") def update_schemastore(schemastore: Path) -> None: @@ -47,13 +47,17 @@ def update_schemastore(schemastore: Path) -> None: cwd=schemastore, ) + # Run npm install + src = schemastore.joinpath("src") + check_call(["npm", "install"], cwd=src) + # Update the schema and format appropriately schema = json.loads(root.joinpath("ruff.schema.json").read_text()) schema["$id"] = "https://json.schemastore.org/ruff.json" - schemastore.joinpath(ruff_json).write_text( + src.joinpath(ruff_json).write_text( json.dumps(dict(sorted(schema.items())), indent=2, ensure_ascii=False), ) - check_call(["prettier", "--write", ruff_json], cwd=schemastore) + check_call(["node_modules/.bin/prettier", "--write", ruff_json], cwd=src) # Check if the schema has changed # https://stackoverflow.com/a/9393642/3549270 From b0d6fd7343e503f1ec2917db339fe88639d84911 Mon Sep 17 00:00:00 2001 From: Charlie Marsh Date: Tue, 23 Jan 2024 23:26:02 -0500 Subject: [PATCH 26/31] Generate custom JSON schema for dynamic setting (#9632) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ## Summary If you paste in the TOML for our default configuration (from the docs), it's rejected by our JSON Schema: ![Screenshot 2024-01-23 at 10 08 09 PM](https://github.com/astral-sh/ruff/assets/1309177/7b4ea6e8-07db-4590-bd1e-73a01a35d747) It seems like the issue is with: ```toml # Set the line length limit used when formatting code snippets in # docstrings. # # This only has an effect when the `docstring-code-format` setting is # enabled. docstring-code-line-length = "dynamic" ``` Specifically, since that value uses a custom Serde implementation, I guess Schemars bails out? This PR adds a custom representation to allow `"dynamic"` (but no other strings): ![Screenshot 2024-01-23 at 10 27 21 PM](https://github.com/astral-sh/ruff/assets/1309177/ab7809d4-b077-44e9-8f98-ed893aaefe5d) This seems like it should work but I don't have a great way to test it. Closes https://github.com/astral-sh/ruff/issues/9630. --- crates/ruff_python_formatter/src/options.rs | 31 +++++++++++++++++++-- ruff.schema.json | 18 ++++++++++-- 2 files changed, 44 insertions(+), 5 deletions(-) diff --git a/crates/ruff_python_formatter/src/options.rs b/crates/ruff_python_formatter/src/options.rs index 122a9909e943a..e4022a58891d9 100644 --- a/crates/ruff_python_formatter/src/options.rs +++ b/crates/ruff_python_formatter/src/options.rs @@ -1,10 +1,11 @@ +use std::fmt; +use std::path::Path; +use std::str::FromStr; + use ruff_formatter::printer::{LineEnding, PrinterOptions, SourceMapGeneration}; use ruff_formatter::{FormatOptions, IndentStyle, IndentWidth, LineWidth}; use ruff_macros::CacheKey; use ruff_python_ast::PySourceType; -use std::fmt; -use std::path::Path; -use std::str::FromStr; /// Resolved options for formatting one individual file. The difference to `FormatterSettings` /// is that `FormatterSettings` stores the settings for multiple files (the entire project, a subdirectory, ..) @@ -367,15 +368,39 @@ impl fmt::Display for DocstringCode { #[cfg_attr(feature = "serde", serde(untagged))] #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))] pub enum DocstringCodeLineWidth { + /// Wrap docstring code examples at a fixed line width. Fixed(LineWidth), + + /// Respect the line length limit setting for the surrounding Python code. #[default] #[cfg_attr( feature = "serde", serde(deserialize_with = "deserialize_docstring_code_line_width_dynamic") )] + #[cfg_attr(feature = "schemars", schemars(with = "DynamicSchema"))] Dynamic, } +/// A dummy type that is used to generate a schema for `DocstringCodeLineWidth::Dynamic`. +#[cfg(feature = "schemars")] +struct DynamicSchema; + +#[cfg(feature = "schemars")] +impl schemars::JsonSchema for DynamicSchema { + fn schema_name() -> String { + "Dynamic".to_string() + } + + fn json_schema(_: &mut schemars::gen::SchemaGenerator) -> schemars::schema::Schema { + schemars::schema::SchemaObject { + instance_type: Some(schemars::schema::InstanceType::String.into()), + const_value: Some("dynamic".to_string().into()), + ..Default::default() + } + .into() + } +} + impl fmt::Debug for DocstringCodeLineWidth { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { match *self { diff --git a/ruff.schema.json b/ruff.schema.json index 65a83ce31c241..54e7656c6d7c5 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -750,13 +750,27 @@ "DocstringCodeLineWidth": { "anyOf": [ { - "$ref": "#/definitions/LineWidth" + "description": "Wrap docstring code examples at a fixed line width.", + "allOf": [ + { + "$ref": "#/definitions/LineWidth" + } + ] }, { - "type": "null" + "description": "Respect the line length limit setting for the surrounding Python code.", + "allOf": [ + { + "$ref": "#/definitions/Dynamic" + } + ] } ] }, + "Dynamic": { + "type": "string", + "const": "dynamic" + }, "Flake8AnnotationsOptions": { "type": "object", "properties": { From fc3e2664f917cdec818e1e3dfb7c5ab1fb916683 Mon Sep 17 00:00:00 2001 From: Andrew Gallant Date: Wed, 24 Jan 2024 10:51:07 -0500 Subject: [PATCH 27/31] help: enable auto-wrapping of help output (#9633) Previously, without the 'wrap_help' feature enabled, Clap would not do any auto-wrapping of help text. For help text with long lines, this tends to lead to non-ideal formatting. It can be especially difficult to read when the width of the terminal is smaller. This commit enables 'wrap_help', which will automatically cause Clap to query the terminal size and wrap according to that. Or, if the terminal size cannot be determined, it will default to a maximum line width of 100. Ref https://github.com/astral-sh/ruff/pull/9599#discussion_r1464992692 --- Cargo.lock | 11 +++ crates/ruff/Cargo.toml | 2 +- crates/ruff_dev/Cargo.toml | 2 +- crates/ruff_dev/src/generate_cli_help.rs | 7 +- docs/configuration.md | 121 ++++++++++++++++------- 5 files changed, 102 insertions(+), 41 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 7e28815d9c057..d7cd647c575f6 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -330,6 +330,7 @@ dependencies = [ "anstyle", "clap_lex", "strsim", + "terminal_size", ] [[package]] @@ -2891,6 +2892,16 @@ dependencies = [ "winapi-util", ] +[[package]] +name = "terminal_size" +version = "0.3.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "21bebf2b7c9e0a515f6e0f8c51dc0f8e4696391e6f1ff30379559f8365fb0df7" +dependencies = [ + "rustix", + "windows-sys 0.48.0", +] + [[package]] name = "terminfo" version = "0.8.0" diff --git a/crates/ruff/Cargo.toml b/crates/ruff/Cargo.toml index 66b1a9fdbf93f..88a633f2425d5 100644 --- a/crates/ruff/Cargo.toml +++ b/crates/ruff/Cargo.toml @@ -30,7 +30,7 @@ bincode = { workspace = true } bitflags = { workspace = true } cachedir = { workspace = true } chrono = { workspace = true } -clap = { workspace = true, features = ["derive", "env"] } +clap = { workspace = true, features = ["derive", "env", "wrap_help"] } clap_complete_command = { workspace = true } clearscreen = { workspace = true } colored = { workspace = true } diff --git a/crates/ruff_dev/Cargo.toml b/crates/ruff_dev/Cargo.toml index b7e6024eb3294..0137f468ab3d7 100644 --- a/crates/ruff_dev/Cargo.toml +++ b/crates/ruff_dev/Cargo.toml @@ -25,7 +25,7 @@ ruff_python_trivia = { path = "../ruff_python_trivia" } ruff_workspace = { path = "../ruff_workspace", features = ["schemars"]} anyhow = { workspace = true } -clap = { workspace = true } +clap = { workspace = true, features = ["wrap_help"] } ignore = { workspace = true } imara-diff = { workspace = true } indicatif = { workspace = true } diff --git a/crates/ruff_dev/src/generate_cli_help.rs b/crates/ruff_dev/src/generate_cli_help.rs index 7e29ae3df8156..20eb41bb2f6a6 100644 --- a/crates/ruff_dev/src/generate_cli_help.rs +++ b/crates/ruff_dev/src/generate_cli_help.rs @@ -114,12 +114,15 @@ pub(super) fn main(args: &Args) -> Result<()> { /// Returns the output of `ruff help`. fn help_text() -> String { - args::Args::command().render_help().to_string() + args::Args::command() + .term_width(79) + .render_help() + .to_string() } /// Returns the output of a given subcommand (e.g., `ruff help check`). fn subcommand_help_text(subcommand: &str) -> Result { - let mut cmd = args::Args::command(); + let mut cmd = args::Args::command().term_width(79); // The build call is necessary for the help output to contain `Usage: ruff // check` instead of `Usage: check` see https://github.com/clap-rs/clap/issues/4685 diff --git a/docs/configuration.md b/docs/configuration.md index 39c12e331b3a6..2114f2f6e774b 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -482,7 +482,8 @@ Options: Log levels: -v, --verbose Enable verbose logging -q, --quiet Print diagnostics, but nothing else - -s, --silent Disable all logging (but still exit with status code "1" upon detecting diagnostics) + -s, --silent Disable all logging (but still exit with status code "1" upon + detecting diagnostics) For help with a specific command, see: `ruff help `. ``` @@ -503,33 +504,46 @@ Arguments: Options: --fix - Apply fixes to resolve lint violations. Use `--no-fix` to disable or `--unsafe-fixes` to include unsafe fixes + Apply fixes to resolve lint violations. Use `--no-fix` to disable or + `--unsafe-fixes` to include unsafe fixes --unsafe-fixes - Include fixes that may not retain the original intent of the code. Use `--no-unsafe-fixes` to disable + Include fixes that may not retain the original intent of the code. + Use `--no-unsafe-fixes` to disable --show-source Show violations with source code. Use `--no-show-source` to disable --show-fixes - Show an enumeration of all fixed lint violations. Use `--no-show-fixes` to disable + Show an enumeration of all fixed lint violations. Use + `--no-show-fixes` to disable --diff - Avoid writing any fixed files back; instead, output a diff for each changed file to stdout. Implies `--fix-only` + Avoid writing any fixed files back; instead, output a diff for each + changed file to stdout. Implies `--fix-only` -w, --watch Run in watch mode by re-running whenever files change --fix-only - Apply fixes to resolve lint violations, but don't report on leftover violations. Implies `--fix`. Use `--no-fix-only` to disable or `--unsafe-fixes` to include unsafe fixes + Apply fixes to resolve lint violations, but don't report on leftover + violations. Implies `--fix`. Use `--no-fix-only` to disable or + `--unsafe-fixes` to include unsafe fixes --ignore-noqa Ignore any `# noqa` comments --output-format - Output serialization format for violations [env: RUFF_OUTPUT_FORMAT=] [possible values: text, json, json-lines, junit, grouped, github, gitlab, pylint, azure, sarif] + Output serialization format for violations [env: RUFF_OUTPUT_FORMAT=] + [possible values: text, json, json-lines, junit, grouped, github, + gitlab, pylint, azure, sarif] -o, --output-file Specify file to write the linter output to (default: stdout) --target-version - The minimum Python version that should be supported [possible values: py37, py38, py39, py310, py311, py312] + The minimum Python version that should be supported [possible values: + py37, py38, py39, py310, py311, py312] --preview - Enable preview mode; checks will include unstable rules and fixes. Use `--no-preview` to disable + Enable preview mode; checks will include unstable rules and fixes. + Use `--no-preview` to disable --config - Path to the `pyproject.toml` or `ruff.toml` file to use for configuration + Path to the `pyproject.toml` or `ruff.toml` file to use for + configuration --extension - List of mappings from file extension to language (one of ["python", "ipynb", "pyi"]). For example, to treat `.ipy` files as IPython notebooks, use `--extension ipy:ipynb` + List of mappings from file extension to language (one of ["python", + "ipynb", "pyi"]). For example, to treat `.ipy` files as IPython + notebooks, use `--extension ipy:ipynb` --statistics Show counts for every rule with at least one violation --add-noqa @@ -543,27 +557,40 @@ Options: Rule selection: --select - Comma-separated list of rule codes to enable (or ALL, to enable all rules) + Comma-separated list of rule codes to enable (or ALL, to enable all + rules) --ignore Comma-separated list of rule codes to disable --extend-select - Like --select, but adds additional rule codes on top of those already specified + Like --select, but adds additional rule codes on top of those already + specified --per-file-ignores List of mappings from file pattern to code to exclude --extend-per-file-ignores - Like `--per-file-ignores`, but adds additional ignores on top of those already specified + Like `--per-file-ignores`, but adds additional ignores on top of + those already specified --fixable - List of rule codes to treat as eligible for fix. Only applicable when fix itself is enabled (e.g., via `--fix`) + List of rule codes to treat as eligible for fix. Only applicable when + fix itself is enabled (e.g., via `--fix`) --unfixable - List of rule codes to treat as ineligible for fix. Only applicable when fix itself is enabled (e.g., via `--fix`) + List of rule codes to treat as ineligible for fix. Only applicable + when fix itself is enabled (e.g., via `--fix`) --extend-fixable - Like --fixable, but adds additional rule codes on top of those already specified + Like --fixable, but adds additional rule codes on top of those + already specified File selection: - --exclude List of paths, used to omit files and/or directories from analysis - --extend-exclude Like --exclude, but adds additional files and directories on top of those already excluded - --respect-gitignore Respect file exclusions via `.gitignore` and other standard ignore files. Use `--no-respect-gitignore` to disable - --force-exclude Enforce exclusions, even for paths passed to Ruff directly on the command-line. Use `--no-force-exclude` to disable + --exclude + List of paths, used to omit files and/or directories from analysis + --extend-exclude + Like --exclude, but adds additional files and directories on top of + those already excluded + --respect-gitignore + Respect file exclusions via `.gitignore` and other standard ignore + files. Use `--no-respect-gitignore` to disable + --force-exclude + Enforce exclusions, even for paths passed to Ruff directly on the + command-line. Use `--no-force-exclude` to disable Miscellaneous: -n, --no-cache @@ -577,12 +604,14 @@ Miscellaneous: -e, --exit-zero Exit with status code "0", even upon detecting lint violations --exit-non-zero-on-fix - Exit with a non-zero status code if any files were modified via fix, even if no lint violations remain + Exit with a non-zero status code if any files were modified via fix, + even if no lint violations remain Log levels: -v, --verbose Enable verbose logging -q, --quiet Print diagnostics, but nothing else - -s, --silent Disable all logging (but still exit with status code "1" upon detecting diagnostics) + -s, --silent Disable all logging (but still exit with status code "1" upon + detecting diagnostics) ``` @@ -601,30 +630,47 @@ Arguments: Options: --check - Avoid writing any formatted files back; instead, exit with a non-zero status code if any files would have been modified, and zero otherwise + Avoid writing any formatted files back; instead, exit with a non-zero + status code if any files would have been modified, and zero otherwise --diff - Avoid writing any formatted files back; instead, exit with a non-zero status code and the difference between the current file and how the formatted file would look like + Avoid writing any formatted files back; instead, exit with a non-zero + status code and the difference between the current file and how the + formatted file would look like --config - Path to the `pyproject.toml` or `ruff.toml` file to use for configuration + Path to the `pyproject.toml` or `ruff.toml` file to use for + configuration --extension - List of mappings from file extension to language (one of ["python", "ipynb", "pyi"]). For example, to treat `.ipy` files as IPython notebooks, use `--extension ipy:ipynb` + List of mappings from file extension to language (one of ["python", + "ipynb", "pyi"]). For example, to treat `.ipy` files as IPython + notebooks, use `--extension ipy:ipynb` --target-version - The minimum Python version that should be supported [possible values: py37, py38, py39, py310, py311, py312] + The minimum Python version that should be supported [possible values: + py37, py38, py39, py310, py311, py312] --preview - Enable preview mode; enables unstable formatting. Use `--no-preview` to disable + Enable preview mode; enables unstable formatting. Use `--no-preview` + to disable -h, --help Print help Miscellaneous: - -n, --no-cache Disable cache reads [env: RUFF_NO_CACHE=] - --cache-dir Path to the cache directory [env: RUFF_CACHE_DIR=] - --isolated Ignore all configuration files - --stdin-filename The name of the file when passing it through stdin + -n, --no-cache + Disable cache reads [env: RUFF_NO_CACHE=] + --cache-dir + Path to the cache directory [env: RUFF_CACHE_DIR=] + --isolated + Ignore all configuration files + --stdin-filename + The name of the file when passing it through stdin File selection: - --respect-gitignore Respect file exclusions via `.gitignore` and other standard ignore files. Use `--no-respect-gitignore` to disable - --exclude List of paths, used to omit files and/or directories from analysis - --force-exclude Enforce exclusions, even for paths passed to Ruff directly on the command-line. Use `--no-force-exclude` to disable + --respect-gitignore + Respect file exclusions via `.gitignore` and other standard ignore + files. Use `--no-respect-gitignore` to disable + --exclude + List of paths, used to omit files and/or directories from analysis + --force-exclude + Enforce exclusions, even for paths passed to Ruff directly on the + command-line. Use `--no-force-exclude` to disable Format configuration: --line-length Set the line-length @@ -632,7 +678,8 @@ Format configuration: Log levels: -v, --verbose Enable verbose logging -q, --quiet Print diagnostics, but nothing else - -s, --silent Disable all logging (but still exit with status code "1" upon detecting diagnostics) + -s, --silent Disable all logging (but still exit with status code "1" upon + detecting diagnostics) ``` From 45628a58831628441d592e00b35470401fde0592 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Mikko=20Lepp=C3=A4nen?= Date: Wed, 24 Jan 2024 19:19:26 +0200 Subject: [PATCH 28/31] [`flake8-return`] Take `NoReturn` annotation into account when analyzing implicit returns (#9636) ## Summary When we are analyzing the implicit return rule this change add an additional check to verify if the call expression has been annotated with NoReturn type from typing module. See: https://github.com/astral-sh/ruff/issues/5474 ## Test Plan ```bash cargo test ``` --- .../test/fixtures/flake8_return/RET503.py | 50 +- .../src/rules/flake8_return/rules/function.rs | 33 +- ...lake8_return__tests__RET503_RET503.py.snap | 511 ++++++++++-------- 3 files changed, 358 insertions(+), 236 deletions(-) diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_return/RET503.py b/crates/ruff_linter/resources/test/fixtures/flake8_return/RET503.py index 9ec90617d31c4..60091c7eea102 100644 --- a/crates/ruff_linter/resources/test/fixtures/flake8_return/RET503.py +++ b/crates/ruff_linter/resources/test/fixtures/flake8_return/RET503.py @@ -1,14 +1,15 @@ +import _thread import builtins import os import posix -from posix import abort import sys as std_sys import typing -import typing_extensions -import _thread -import _winapi +from posix import abort +from typing import NoReturn +import _winapi import pytest +import typing_extensions from pytest import xfail as py_xfail ### @@ -326,3 +327,44 @@ def end_of_file(): if False: return 1 x = 2 \ + + + +# function return type annotation NoReturn +def foo(x: int) -> int: + def bar() -> NoReturn: + abort() + if x == 5: + return 5 + bar() + + +def foo(string: str) -> str: + def raises(value: str) -> NoReturn: + raise RuntimeError("something went wrong") + + match string: + case "a": + return "first" + case "b": + return "second" + case "c": + return "third" + case _: + raises(string) + + +def foo() -> int: + def baz() -> int: + return 1 + + + def bar() -> NoReturn: + a = 1 + 2 + raise AssertionError("Very bad") + + + + if baz() > 3: + return 1 + bar() diff --git a/crates/ruff_linter/src/rules/flake8_return/rules/function.rs b/crates/ruff_linter/src/rules/flake8_return/rules/function.rs index 396a157e9cde1..d7bbd7b107421 100644 --- a/crates/ruff_linter/src/rules/flake8_return/rules/function.rs +++ b/crates/ruff_linter/src/rules/flake8_return/rules/function.rs @@ -368,9 +368,11 @@ fn implicit_return_value(checker: &mut Checker, stack: &Stack) { } } -/// Return `true` if the `func` is a known function that never returns. +/// Return `true` if the `func` appears to be non-returning. fn is_noreturn_func(func: &Expr, semantic: &SemanticModel) -> bool { - semantic.resolve_call_path(func).is_some_and(|call_path| { + // First, look for known functions that never return from the standard library and popular + // libraries. + if semantic.resolve_call_path(func).is_some_and(|call_path| { matches!( call_path.as_slice(), ["" | "builtins" | "sys" | "_thread" | "pytest", "exit"] @@ -379,7 +381,32 @@ fn is_noreturn_func(func: &Expr, semantic: &SemanticModel) -> bool { | ["_winapi", "ExitProcess"] | ["pytest", "fail" | "skip" | "xfail"] ) || semantic.match_typing_call_path(&call_path, "assert_never") - }) + }) { + return true; + } + + // Second, look for `NoReturn` annotations on the return type. + let Some(func_binding) = semantic.lookup_attribute(func) else { + return false; + }; + let Some(node_id) = semantic.binding(func_binding).source else { + return false; + }; + + let Stmt::FunctionDef(ast::StmtFunctionDef { returns, .. }) = semantic.statement(node_id) + else { + return false; + }; + + let Some(returns) = returns.as_ref() else { + return false; + }; + + let Some(call_path) = semantic.resolve_call_path(returns) else { + return false; + }; + + semantic.match_typing_call_path(&call_path, "NoReturn") } /// RET503 diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET503_RET503.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET503_RET503.py.snap index f3e16f59191df..27e3258087d4b 100644 --- a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET503_RET503.py.snap +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET503_RET503.py.snap @@ -1,403 +1,456 @@ --- source: crates/ruff_linter/src/rules/flake8_return/mod.rs --- -RET503.py:20:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:21:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -18 | # if/elif/else -19 | def x(y): -20 | if not y: +19 | # if/elif/else +20 | def x(y): +21 | if not y: | _____^ -21 | | return 1 +22 | | return 1 | |________________^ RET503 -22 | # error +23 | # error | = help: Add explicit `return` statement ℹ Unsafe fix -19 19 | def x(y): -20 20 | if not y: -21 21 | return 1 - 22 |+ return None -22 23 | # error -23 24 | +20 20 | def x(y): +21 21 | if not y: +22 22 | return 1 + 23 |+ return None +23 24 | # error 24 25 | +25 26 | -RET503.py:27:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:28:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -25 | def x(y): -26 | if not y: -27 | print() # error +26 | def x(y): +27 | if not y: +28 | print() # error | ^^^^^^^ RET503 -28 | else: -29 | return 2 +29 | else: +30 | return 2 | = help: Add explicit `return` statement ℹ Unsafe fix -25 25 | def x(y): -26 26 | if not y: -27 27 | print() # error - 28 |+ return None -28 29 | else: -29 30 | return 2 -30 31 | - -RET503.py:36:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +26 26 | def x(y): +27 27 | if not y: +28 28 | print() # error + 29 |+ return None +29 30 | else: +30 31 | return 2 +31 32 | + +RET503.py:37:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -34 | return 1 -35 | -36 | print() # error +35 | return 1 +36 | +37 | print() # error | ^^^^^^^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -34 34 | return 1 -35 35 | -36 36 | print() # error - 37 |+ return None -37 38 | +35 35 | return 1 +36 36 | +37 37 | print() # error + 38 |+ return None 38 39 | -39 40 | # for +39 40 | +40 41 | # for -RET503.py:41:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:42:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -39 | # for -40 | def x(y): -41 | for i in range(10): +40 | # for +41 | def x(y): +42 | for i in range(10): | _____^ -42 | | if i > 10: -43 | | return i +43 | | if i > 10: +44 | | return i | |____________________^ RET503 -44 | # error +45 | # error | = help: Add explicit `return` statement ℹ Unsafe fix -41 41 | for i in range(10): -42 42 | if i > 10: -43 43 | return i - 44 |+ return None -44 45 | # error -45 46 | +42 42 | for i in range(10): +43 43 | if i > 10: +44 44 | return i + 45 |+ return None +45 46 | # error 46 47 | +47 48 | -RET503.py:52:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:53:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -50 | return i -51 | else: -52 | print() # error +51 | return i +52 | else: +53 | print() # error | ^^^^^^^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -50 50 | return i -51 51 | else: -52 52 | print() # error - 53 |+ return None -53 54 | +51 51 | return i +52 52 | else: +53 53 | print() # error + 54 |+ return None 54 55 | -55 56 | # A nonexistent function +55 56 | +56 57 | # A nonexistent function -RET503.py:59:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:60:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -57 | if x > 0: -58 | return False -59 | no_such_function() # error +58 | if x > 0: +59 | return False +60 | no_such_function() # error | ^^^^^^^^^^^^^^^^^^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -57 57 | if x > 0: -58 58 | return False -59 59 | no_such_function() # error - 60 |+ return None -60 61 | +58 58 | if x > 0: +59 59 | return False +60 60 | no_such_function() # error + 61 |+ return None 61 62 | -62 63 | # A function that does return the control +62 63 | +63 64 | # A function that does return the control -RET503.py:66:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:67:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -64 | if x > 0: -65 | return False -66 | print("", end="") # error +65 | if x > 0: +66 | return False +67 | print("", end="") # error | ^^^^^^^^^^^^^^^^^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -64 64 | if x > 0: -65 65 | return False -66 66 | print("", end="") # error - 67 |+ return None -67 68 | +65 65 | if x > 0: +66 66 | return False +67 67 | print("", end="") # error + 68 |+ return None 68 69 | -69 70 | ### +69 70 | +70 71 | ### -RET503.py:82:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:83:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -80 | # last line in while loop -81 | def x(y): -82 | while i > 0: +81 | # last line in while loop +82 | def x(y): +83 | while i > 0: | _____^ -83 | | if y > 0: -84 | | return 1 -85 | | y += 1 +84 | | if y > 0: +85 | | return 1 +86 | | y += 1 | |______________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -83 83 | if y > 0: -84 84 | return 1 -85 85 | y += 1 - 86 |+ return None -86 87 | +84 84 | if y > 0: +85 85 | return 1 +86 86 | y += 1 + 87 |+ return None 87 88 | -88 89 | # exclude empty functions +88 89 | +89 90 | # exclude empty functions -RET503.py:113:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:114:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -111 | # return value within loop -112 | def bar1(x, y, z): -113 | for i in x: +112 | # return value within loop +113 | def bar1(x, y, z): +114 | for i in x: | _____^ -114 | | if i > y: -115 | | break -116 | | return z +115 | | if i > y: +116 | | break +117 | | return z | |________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -114 114 | if i > y: -115 115 | break -116 116 | return z - 117 |+ return None -117 118 | +115 115 | if i > y: +116 116 | break +117 117 | return z + 118 |+ return None 118 119 | -119 120 | def bar3(x, y, z): +119 120 | +120 121 | def bar3(x, y, z): -RET503.py:120:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:121:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -119 | def bar3(x, y, z): -120 | for i in x: +120 | def bar3(x, y, z): +121 | for i in x: | _____^ -121 | | if i > y: -122 | | if z: -123 | | break -124 | | else: -125 | | return z -126 | | return None +122 | | if i > y: +123 | | if z: +124 | | break +125 | | else: +126 | | return z +127 | | return None | |___________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -124 124 | else: -125 125 | return z -126 126 | return None - 127 |+ return None -127 128 | +125 125 | else: +126 126 | return z +127 127 | return None + 128 |+ return None 128 129 | -129 130 | def bar1(x, y, z): +129 130 | +130 131 | def bar1(x, y, z): -RET503.py:130:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:131:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -129 | def bar1(x, y, z): -130 | for i in x: +130 | def bar1(x, y, z): +131 | for i in x: | _____^ -131 | | if i < y: -132 | | continue -133 | | return z +132 | | if i < y: +133 | | continue +134 | | return z | |________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -131 131 | if i < y: -132 132 | continue -133 133 | return z - 134 |+ return None -134 135 | +132 132 | if i < y: +133 133 | continue +134 134 | return z + 135 |+ return None 135 136 | -136 137 | def bar3(x, y, z): +136 137 | +137 138 | def bar3(x, y, z): -RET503.py:137:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:138:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -136 | def bar3(x, y, z): -137 | for i in x: +137 | def bar3(x, y, z): +138 | for i in x: | _____^ -138 | | if i < y: -139 | | if z: -140 | | continue -141 | | else: -142 | | return z -143 | | return None +139 | | if i < y: +140 | | if z: +141 | | continue +142 | | else: +143 | | return z +144 | | return None | |___________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -141 141 | else: -142 142 | return z -143 143 | return None - 144 |+ return None -144 145 | +142 142 | else: +143 143 | return z +144 144 | return None + 145 |+ return None 145 146 | -146 147 | def prompts(self, foo): +146 147 | +147 148 | def prompts(self, foo): -RET503.py:274:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:275:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -272 | return False -273 | -274 | for value in values: +273 | return False +274 | +275 | for value in values: | _____^ -275 | | print(value) +276 | | print(value) | |____________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -273 273 | -274 274 | for value in values: -275 275 | print(value) - 276 |+ return None -276 277 | +274 274 | +275 275 | for value in values: +276 276 | print(value) + 277 |+ return None 277 278 | -278 279 | def while_true(): +278 279 | +279 280 | def while_true(): -RET503.py:291:13: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:292:13: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -289 | return 1 -290 | case 1: -291 | print() # error +290 | return 1 +291 | case 1: +292 | print() # error | ^^^^^^^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -289 289 | return 1 -290 290 | case 1: -291 291 | print() # error - 292 |+ return None -292 293 | +290 290 | return 1 +291 291 | case 1: +292 292 | print() # error + 293 |+ return None 293 294 | -294 295 | def foo(baz: str) -> str: +294 295 | +295 296 | def foo(baz: str) -> str: -RET503.py:300:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:301:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -298 | def end_of_statement(): -299 | def example(): -300 | if True: +299 | def end_of_statement(): +300 | def example(): +301 | if True: | _________^ -301 | | return "" +302 | | return "" | |_____________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -299 299 | def example(): -300 300 | if True: -301 301 | return "" - 302 |+ return None -302 303 | +300 300 | def example(): +301 301 | if True: +302 302 | return "" + 303 |+ return None 303 304 | -304 305 | def example(): +304 305 | +305 306 | def example(): -RET503.py:305:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:306:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -304 | def example(): -305 | if True: +305 | def example(): +306 | if True: | _________^ -306 | | return "" +307 | | return "" | |_____________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -304 304 | def example(): -305 305 | if True: -306 306 | return "" - 307 |+ return None -307 308 | +305 305 | def example(): +306 306 | if True: +307 307 | return "" + 308 |+ return None 308 309 | -309 310 | def example(): +309 310 | +310 311 | def example(): -RET503.py:310:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:311:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -309 | def example(): -310 | if True: +310 | def example(): +311 | if True: | _________^ -311 | | return "" # type: ignore +312 | | return "" # type: ignore | |_____________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -309 309 | def example(): -310 310 | if True: -311 311 | return "" # type: ignore - 312 |+ return None -312 313 | +310 310 | def example(): +311 311 | if True: +312 312 | return "" # type: ignore + 313 |+ return None 313 314 | -314 315 | def example(): +314 315 | +315 316 | def example(): -RET503.py:315:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:316:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -314 | def example(): -315 | if True: +315 | def example(): +316 | if True: | _________^ -316 | | return "" ; +317 | | return "" ; | |_____________________^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -314 314 | def example(): -315 315 | if True: -316 316 | return "" ; - 317 |+ return None -317 318 | +315 315 | def example(): +316 316 | if True: +317 317 | return "" ; + 318 |+ return None 318 319 | -319 320 | def example(): +319 320 | +320 321 | def example(): -RET503.py:320:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:321:9: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -319 | def example(): -320 | if True: +320 | def example(): +321 | if True: | _________^ -321 | | return "" \ +322 | | return "" \ | |_____________________^ RET503 -322 | ; # type: ignore +323 | ; # type: ignore | = help: Add explicit `return` statement ℹ Unsafe fix -320 320 | if True: -321 321 | return "" \ -322 322 | ; # type: ignore - 323 |+ return None -323 324 | +321 321 | if True: +322 322 | return "" \ +323 323 | ; # type: ignore + 324 |+ return None 324 325 | -325 326 | def end_of_file(): +325 326 | +326 327 | def end_of_file(): -RET503.py:328:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value +RET503.py:329:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value | -326 | if False: -327 | return 1 -328 | x = 2 \ +327 | if False: +328 | return 1 +329 | x = 2 \ | ^^^^^ RET503 | = help: Add explicit `return` statement ℹ Unsafe fix -326 326 | if False: -327 327 | return 1 -328 328 | x = 2 \ - 329 |+ - 330 |+ return None +328 328 | return 1 +329 329 | x = 2 \ +330 330 | + 331 |+ return None +331 332 | +332 333 | +333 334 | # function return type annotation NoReturn + +RET503.py:339:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value + | +337 | if x == 5: +338 | return 5 +339 | bar() + | ^^^^^ RET503 + | + = help: Add explicit `return` statement + +ℹ Unsafe fix +337 337 | if x == 5: +338 338 | return 5 +339 339 | bar() + 340 |+ return None +340 341 | +341 342 | +342 343 | def foo(string: str) -> str: + +RET503.py:354:13: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value + | +352 | return "third" +353 | case _: +354 | raises(string) + | ^^^^^^^^^^^^^^ RET503 + | + = help: Add explicit `return` statement + +ℹ Unsafe fix +352 352 | return "third" +353 353 | case _: +354 354 | raises(string) + 355 |+ return None +355 356 | +356 357 | +357 358 | def foo() -> int: + +RET503.py:370:5: RET503 [*] Missing explicit `return` at the end of function able to return non-`None` value + | +368 | if baz() > 3: +369 | return 1 +370 | bar() + | ^^^^^ RET503 + | + = help: Add explicit `return` statement + +ℹ Unsafe fix +368 368 | if baz() > 3: +369 369 | return 1 +370 370 | bar() + 371 |+ return None From dba2cb79cbcf82b8032f1fe1a7b48d3c6c1136d2 Mon Sep 17 00:00:00 2001 From: Steve C Date: Wed, 24 Jan 2024 14:30:01 -0500 Subject: [PATCH 29/31] [`pylint`] Implement `too-many-nested-blocks` (`PLR1702`) (#9172) ## Summary Implement [`PLR1702`/`too-many-nested-blocks`](https://pylint.readthedocs.io/en/latest/user_guide/messages/refactor/too-many-nested-blocks.html) See: #970 ## Test Plan `cargo test` --- .../fixtures/pylint/too_many_nested_blocks.py | 21 +++ .../src/checkers/ast/analyze/statement.rs | 15 ++ crates/ruff_linter/src/codes.rs | 1 + crates/ruff_linter/src/rules/pylint/mod.rs | 1 + .../ruff_linter/src/rules/pylint/rules/mod.rs | 2 + .../pylint/rules/too_many_nested_blocks.rs | 132 ++++++++++++++++++ .../ruff_linter/src/rules/pylint/settings.rs | 2 + ...ts__PLR1702_too_many_nested_blocks.py.snap | 20 +++ crates/ruff_workspace/src/options.rs | 6 + ruff.schema.json | 10 ++ 10 files changed, 210 insertions(+) create mode 100644 crates/ruff_linter/resources/test/fixtures/pylint/too_many_nested_blocks.py create mode 100644 crates/ruff_linter/src/rules/pylint/rules/too_many_nested_blocks.rs create mode 100644 crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR1702_too_many_nested_blocks.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/pylint/too_many_nested_blocks.py b/crates/ruff_linter/resources/test/fixtures/pylint/too_many_nested_blocks.py new file mode 100644 index 0000000000000..ec9b25b2b51e2 --- /dev/null +++ b/crates/ruff_linter/resources/test/fixtures/pylint/too_many_nested_blocks.py @@ -0,0 +1,21 @@ +def correct_fruits(fruits) -> bool: + if len(fruits) > 1: # PLR1702 + if "apple" in fruits: + if "orange" in fruits: + count = fruits["orange"] + if count % 2: + if "kiwi" in fruits: + if count == 2: + return True + return False + +# Ok +def correct_fruits(fruits) -> bool: + if len(fruits) > 1: + if "apple" in fruits: + if "orange" in fruits: + count = fruits["orange"] + if count % 2: + if "kiwi" in fruits: + return True + return False diff --git a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs index a613625abd356..481e52a008340 100644 --- a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs +++ b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs @@ -1073,6 +1073,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { } } Stmt::If(if_ @ ast::StmtIf { test, .. }) => { + if checker.enabled(Rule::TooManyNestedBlocks) { + pylint::rules::too_many_nested_blocks(checker, stmt); + } if checker.enabled(Rule::EmptyTypeCheckingBlock) { if typing::is_type_checking_block(if_, &checker.semantic) { flake8_type_checking::rules::empty_type_checking_block(checker, if_); @@ -1205,6 +1208,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { } } Stmt::With(with_stmt @ ast::StmtWith { items, body, .. }) => { + if checker.enabled(Rule::TooManyNestedBlocks) { + pylint::rules::too_many_nested_blocks(checker, stmt); + } if checker.enabled(Rule::AssertRaisesException) { flake8_bugbear::rules::assert_raises_exception(checker, items); } @@ -1232,6 +1238,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { } } Stmt::While(while_stmt @ ast::StmtWhile { body, orelse, .. }) => { + if checker.enabled(Rule::TooManyNestedBlocks) { + pylint::rules::too_many_nested_blocks(checker, stmt); + } if checker.enabled(Rule::FunctionUsesLoopVariable) { flake8_bugbear::rules::function_uses_loop_variable(checker, &Node::Stmt(stmt)); } @@ -1255,6 +1264,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { range: _, }, ) => { + if checker.enabled(Rule::TooManyNestedBlocks) { + pylint::rules::too_many_nested_blocks(checker, stmt); + } if checker.any_enabled(&[ Rule::EnumerateForLoop, Rule::IncorrectDictIterator, @@ -1319,6 +1331,9 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) { finalbody, .. }) => { + if checker.enabled(Rule::TooManyNestedBlocks) { + pylint::rules::too_many_nested_blocks(checker, stmt); + } if checker.enabled(Rule::JumpStatementInFinally) { flake8_bugbear::rules::jump_statement_in_finally(checker, finalbody); } diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs index f7c296a3ecc9c..3e1a2df5591da 100644 --- a/crates/ruff_linter/src/codes.rs +++ b/crates/ruff_linter/src/codes.rs @@ -261,6 +261,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> { (Pylint, "R0916") => (RuleGroup::Preview, rules::pylint::rules::TooManyBooleanExpressions), (Pylint, "R0917") => (RuleGroup::Preview, rules::pylint::rules::TooManyPositional), (Pylint, "R1701") => (RuleGroup::Stable, rules::pylint::rules::RepeatedIsinstanceCalls), + (Pylint, "R1702") => (RuleGroup::Preview, rules::pylint::rules::TooManyNestedBlocks), (Pylint, "R1704") => (RuleGroup::Preview, rules::pylint::rules::RedefinedArgumentFromLocal), (Pylint, "R1711") => (RuleGroup::Stable, rules::pylint::rules::UselessReturn), (Pylint, "R1714") => (RuleGroup::Stable, rules::pylint::rules::RepeatedEqualityComparison), diff --git a/crates/ruff_linter/src/rules/pylint/mod.rs b/crates/ruff_linter/src/rules/pylint/mod.rs index acae7be19e9ad..5948e9d15789c 100644 --- a/crates/ruff_linter/src/rules/pylint/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/mod.rs @@ -171,6 +171,7 @@ mod tests { #[test_case(Rule::NoStaticmethodDecorator, Path::new("no_method_decorator.py"))] #[test_case(Rule::PotentialIndexError, Path::new("potential_index_error.py"))] #[test_case(Rule::SuperWithoutBrackets, Path::new("super_without_brackets.py"))] + #[test_case(Rule::TooManyNestedBlocks, Path::new("too_many_nested_blocks.py"))] #[test_case( Rule::UnnecessaryDictIndexLookup, Path::new("unnecessary_dict_index_lookup.py") diff --git a/crates/ruff_linter/src/rules/pylint/rules/mod.rs b/crates/ruff_linter/src/rules/pylint/rules/mod.rs index 2845943106d66..3ba5d1061b7d2 100644 --- a/crates/ruff_linter/src/rules/pylint/rules/mod.rs +++ b/crates/ruff_linter/src/rules/pylint/rules/mod.rs @@ -61,6 +61,7 @@ pub(crate) use too_many_arguments::*; pub(crate) use too_many_boolean_expressions::*; pub(crate) use too_many_branches::*; pub(crate) use too_many_locals::*; +pub(crate) use too_many_nested_blocks::*; pub(crate) use too_many_positional::*; pub(crate) use too_many_public_methods::*; pub(crate) use too_many_return_statements::*; @@ -145,6 +146,7 @@ mod too_many_arguments; mod too_many_boolean_expressions; mod too_many_branches; mod too_many_locals; +mod too_many_nested_blocks; mod too_many_positional; mod too_many_public_methods; mod too_many_return_statements; diff --git a/crates/ruff_linter/src/rules/pylint/rules/too_many_nested_blocks.rs b/crates/ruff_linter/src/rules/pylint/rules/too_many_nested_blocks.rs new file mode 100644 index 0000000000000..bd641f0aa9205 --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/rules/too_many_nested_blocks.rs @@ -0,0 +1,132 @@ +use ast::ExceptHandler; +use ruff_diagnostics::{Diagnostic, Violation}; +use ruff_macros::{derive_message_formats, violation}; +use ruff_python_ast::{self as ast, Stmt}; +use ruff_text_size::Ranged; + +use crate::checkers::ast::Checker; + +/// ## What it does +/// Checks for functions or methods with too many nested blocks. +/// +/// By default, this rule allows up to five nested blocks. +/// This can be configured using the [`pylint.max-nested-blocks`] option. +/// +/// ## Why is this bad? +/// Functions or methods with too many nested blocks are harder to understand +/// and maintain. +/// +/// ## Options +/// - `pylint.max-nested-blocks` +#[violation] +pub struct TooManyNestedBlocks { + nested_blocks: usize, + max_nested_blocks: usize, +} + +impl Violation for TooManyNestedBlocks { + #[derive_message_formats] + fn message(&self) -> String { + let TooManyNestedBlocks { + nested_blocks, + max_nested_blocks, + } = self; + format!("Too many nested blocks ({nested_blocks} > {max_nested_blocks})") + } +} + +/// PLR1702 +pub(crate) fn too_many_nested_blocks(checker: &mut Checker, stmt: &Stmt) { + // Only enforce nesting within functions or methods. + if !checker.semantic().current_scope().kind.is_function() { + return; + } + + // If the statement isn't a leaf node, we don't want to emit a diagnostic, since the diagnostic + // will be emitted on the leaves. + if has_nested_block(stmt) { + return; + } + + let max_nested_blocks = checker.settings.pylint.max_nested_blocks; + + // Traverse up the hierarchy, identifying the root node and counting the number of nested + // blocks between the root and this leaf. + let (count, root_id) = + checker + .semantic() + .current_statement_ids() + .fold((0, None), |(count, ancestor_id), id| { + let stmt = checker.semantic().statement(id); + if is_nested_block(stmt) { + (count + 1, Some(id)) + } else { + (count, ancestor_id) + } + }); + + let Some(root_id) = root_id else { + return; + }; + + // If the number of nested blocks is less than the maximum, we don't want to emit a diagnostic. + if count <= max_nested_blocks { + return; + } + + checker.diagnostics.push(Diagnostic::new( + TooManyNestedBlocks { + nested_blocks: count, + max_nested_blocks, + }, + checker.semantic().statement(root_id).range(), + )); +} + +/// Returns `true` if the given statement is a nested block. +fn is_nested_block(stmt: &Stmt) -> bool { + matches!( + stmt, + Stmt::If(_) | Stmt::While(_) | Stmt::For(_) | Stmt::Try(_) | Stmt::With(_) + ) +} + +/// Returns `true` if the given statement is a leaf node. +fn has_nested_block(stmt: &Stmt) -> bool { + match stmt { + Stmt::If(ast::StmtIf { + body, + elif_else_clauses, + .. + }) => { + body.iter().any(is_nested_block) + || elif_else_clauses + .iter() + .any(|elif_else| elif_else.body.iter().any(is_nested_block)) + } + Stmt::While(ast::StmtWhile { body, orelse, .. }) => { + body.iter().any(is_nested_block) || orelse.iter().any(is_nested_block) + } + Stmt::For(ast::StmtFor { body, orelse, .. }) => { + body.iter().any(is_nested_block) || orelse.iter().any(is_nested_block) + } + Stmt::Try(ast::StmtTry { + body, + handlers, + orelse, + finalbody, + .. + }) => { + body.iter().any(is_nested_block) + || handlers.iter().any(|handler| match handler { + ExceptHandler::ExceptHandler(ast::ExceptHandlerExceptHandler { + body, .. + }) => body.iter().any(is_nested_block), + }) + || orelse.iter().any(is_nested_block) + || finalbody.iter().any(is_nested_block) + } + Stmt::With(ast::StmtWith { body, .. }) => body.iter().any(is_nested_block), + _ => false, + } +} diff --git a/crates/ruff_linter/src/rules/pylint/settings.rs b/crates/ruff_linter/src/rules/pylint/settings.rs index 71ff494bf2a7c..cdd55a9e3bbbf 100644 --- a/crates/ruff_linter/src/rules/pylint/settings.rs +++ b/crates/ruff_linter/src/rules/pylint/settings.rs @@ -60,6 +60,7 @@ pub struct Settings { pub max_statements: usize, pub max_public_methods: usize, pub max_locals: usize, + pub max_nested_blocks: usize, } impl Default for Settings { @@ -75,6 +76,7 @@ impl Default for Settings { max_statements: 50, max_public_methods: 20, max_locals: 15, + max_nested_blocks: 5, } } } diff --git a/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR1702_too_many_nested_blocks.py.snap b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR1702_too_many_nested_blocks.py.snap new file mode 100644 index 0000000000000..c3df6b5ec638d --- /dev/null +++ b/crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__PLR1702_too_many_nested_blocks.py.snap @@ -0,0 +1,20 @@ +--- +source: crates/ruff_linter/src/rules/pylint/mod.rs +--- +too_many_nested_blocks.py:2:5: PLR1702 Too many nested blocks (6 > 5) + | + 1 | def correct_fruits(fruits) -> bool: + 2 | if len(fruits) > 1: # PLR1702 + | _____^ + 3 | | if "apple" in fruits: + 4 | | if "orange" in fruits: + 5 | | count = fruits["orange"] + 6 | | if count % 2: + 7 | | if "kiwi" in fruits: + 8 | | if count == 2: + 9 | | return True + | |_______________________________________^ PLR1702 +10 | return False + | + + diff --git a/crates/ruff_workspace/src/options.rs b/crates/ruff_workspace/src/options.rs index 6aaa21113b4b5..ff70baa6f4505 100644 --- a/crates/ruff_workspace/src/options.rs +++ b/crates/ruff_workspace/src/options.rs @@ -2728,6 +2728,11 @@ pub struct PylintOptions { /// (see: `PLR0916`). #[option(default = r"5", value_type = "int", example = r"max-bool-expr = 5")] pub max_bool_expr: Option, + + /// Maximum number of nested blocks allowed within a function or method body + /// (see: `PLR1702`). + #[option(default = r"5", value_type = "int", example = r"max-nested-blocks = 5")] + pub max_nested_blocks: Option, } impl PylintOptions { @@ -2751,6 +2756,7 @@ impl PylintOptions { .max_public_methods .unwrap_or(defaults.max_public_methods), max_locals: self.max_locals.unwrap_or(defaults.max_locals), + max_nested_blocks: self.max_nested_blocks.unwrap_or(defaults.max_nested_blocks), } } } diff --git a/ruff.schema.json b/ruff.schema.json index 54e7656c6d7c5..818222b2d2df7 100644 --- a/ruff.schema.json +++ b/ruff.schema.json @@ -2433,6 +2433,15 @@ "format": "uint", "minimum": 0.0 }, + "max-nested-blocks": { + "description": "Maximum number of nested blocks allowed within a function or method body (see: `PLR1702`).", + "type": [ + "integer", + "null" + ], + "format": "uint", + "minimum": 0.0 + }, "max-positional-args": { "description": "Maximum number of positional arguments allowed for a function or method definition (see: `PLR0917`).\n\nIf not specified, defaults to the value of `max-args`.", "type": [ @@ -3212,6 +3221,7 @@ "PLR17", "PLR170", "PLR1701", + "PLR1702", "PLR1704", "PLR1706", "PLR171", From ffd13e65aeb83048a1737bf1678dc2d56561a83c Mon Sep 17 00:00:00 2001 From: Steve C Date: Thu, 25 Jan 2024 02:28:32 -0500 Subject: [PATCH 30/31] [`flake8-return`] - Add fixes for (`RET505`, `RET506`, `RET507`, `RET508`) (#9595) --- .../test/fixtures/flake8_return/RET505.py | 31 ++ .../src/rules/flake8_return/mod.rs | 24 +- .../src/rules/flake8_return/rules/function.rs | 114 ++++++- ...lake8_return__tests__RET505_RET505.py.snap | 51 ++++ ...lake8_return__tests__RET506_RET506.py.snap | 7 + ...lake8_return__tests__RET507_RET507.py.snap | 7 + ...lake8_return__tests__RET508_RET508.py.snap | 8 + ...urn__tests__preview__RET505_RET505.py.snap | 282 ++++++++++++++++++ ...urn__tests__preview__RET506_RET506.py.snap | 166 +++++++++++ ...urn__tests__preview__RET507_RET507.py.snap | 163 ++++++++++ ...urn__tests__preview__RET508_RET508.py.snap | 181 +++++++++++ 11 files changed, 1027 insertions(+), 7 deletions(-) create mode 100644 crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET505_RET505.py.snap create mode 100644 crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET506_RET506.py.snap create mode 100644 crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET507_RET507.py.snap create mode 100644 crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET508_RET508.py.snap diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_return/RET505.py b/crates/ruff_linter/resources/test/fixtures/flake8_return/RET505.py index 8f5d07fe51b48..a222c5055b683 100644 --- a/crates/ruff_linter/resources/test/fixtures/flake8_return/RET505.py +++ b/crates/ruff_linter/resources/test/fixtures/flake8_return/RET505.py @@ -131,6 +131,37 @@ def bar3(x, y, z): return None +def bar4(x): + if True: + return + else: + # comment + pass + + +def bar5(): + if True: + return + else: # comment + pass + + +def bar6(): + if True: + return + else\ + :\ + # comment + pass + + +def bar7(): + if True: + return + else\ + : # comment + pass + x = 0 if x == 1: diff --git a/crates/ruff_linter/src/rules/flake8_return/mod.rs b/crates/ruff_linter/src/rules/flake8_return/mod.rs index bfad9cf6ba09c..2c9400dd49abd 100644 --- a/crates/ruff_linter/src/rules/flake8_return/mod.rs +++ b/crates/ruff_linter/src/rules/flake8_return/mod.rs @@ -11,10 +11,11 @@ mod tests { use anyhow::Result; use test_case::test_case; - use crate::assert_messages; use crate::registry::Rule; + use crate::settings::types::PreviewMode; use crate::settings::LinterSettings; use crate::test::test_path; + use crate::{assert_messages, settings}; #[test_case(Rule::UnnecessaryReturnNone, Path::new("RET501.py"))] #[test_case(Rule::ImplicitReturnValue, Path::new("RET502.py"))] @@ -33,4 +34,25 @@ mod tests { assert_messages!(snapshot, diagnostics); Ok(()) } + + #[test_case(Rule::SuperfluousElseReturn, Path::new("RET505.py"))] + #[test_case(Rule::SuperfluousElseRaise, Path::new("RET506.py"))] + #[test_case(Rule::SuperfluousElseContinue, Path::new("RET507.py"))] + #[test_case(Rule::SuperfluousElseBreak, Path::new("RET508.py"))] + fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> { + let snapshot = format!( + "preview__{}_{}", + rule_code.noqa_code(), + path.to_string_lossy() + ); + let diagnostics = test_path( + Path::new("flake8_return").join(path).as_path(), + &settings::LinterSettings { + preview: PreviewMode::Enabled, + ..settings::LinterSettings::for_rule(rule_code) + }, + )?; + assert_messages!(snapshot, diagnostics); + Ok(()) + } } diff --git a/crates/ruff_linter/src/rules/flake8_return/rules/function.rs b/crates/ruff_linter/src/rules/flake8_return/rules/function.rs index d7bbd7b107421..36dc832dc6fb2 100644 --- a/crates/ruff_linter/src/rules/flake8_return/rules/function.rs +++ b/crates/ruff_linter/src/rules/flake8_return/rules/function.rs @@ -1,9 +1,10 @@ +use anyhow::Result; use std::ops::Add; use ruff_python_ast::{self as ast, ElifElseClause, Expr, Stmt}; use ruff_text_size::{Ranged, TextRange, TextSize}; -use ruff_diagnostics::{AlwaysFixableViolation, Violation}; +use ruff_diagnostics::{AlwaysFixableViolation, FixAvailability, Violation}; use ruff_diagnostics::{Diagnostic, Edit, Fix}; use ruff_macros::{derive_message_formats, violation}; @@ -12,12 +13,13 @@ use ruff_python_ast::stmt_if::elif_else_range; use ruff_python_ast::visitor::Visitor; use ruff_python_ast::whitespace::indentation; use ruff_python_semantic::SemanticModel; -use ruff_python_trivia::is_python_whitespace; +use ruff_python_trivia::{is_python_whitespace, SimpleTokenKind, SimpleTokenizer}; use crate::checkers::ast::Checker; use crate::fix::edits; use crate::registry::{AsRule, Rule}; use crate::rules::flake8_return::helpers::end_of_last_statement; +use crate::rules::pyupgrade::fixes::adjust_indentation; use super::super::branch::Branch; use super::super::helpers::result_exists; @@ -210,11 +212,17 @@ pub struct SuperfluousElseReturn { } impl Violation for SuperfluousElseReturn { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; #[derive_message_formats] fn message(&self) -> String { let SuperfluousElseReturn { branch } = self; format!("Unnecessary `{branch}` after `return` statement") } + + fn fix_title(&self) -> Option { + let SuperfluousElseReturn { branch } = self; + Some(format!("Remove unnecessary `{branch}`")) + } } /// ## What it does @@ -248,11 +256,17 @@ pub struct SuperfluousElseRaise { } impl Violation for SuperfluousElseRaise { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; #[derive_message_formats] fn message(&self) -> String { let SuperfluousElseRaise { branch } = self; format!("Unnecessary `{branch}` after `raise` statement") } + + fn fix_title(&self) -> Option { + let SuperfluousElseRaise { branch } = self; + Some(format!("Remove unnecessary `{branch}`")) + } } /// ## What it does @@ -288,11 +302,17 @@ pub struct SuperfluousElseContinue { } impl Violation for SuperfluousElseContinue { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; #[derive_message_formats] fn message(&self) -> String { let SuperfluousElseContinue { branch } = self; format!("Unnecessary `{branch}` after `continue` statement") } + + fn fix_title(&self) -> Option { + let SuperfluousElseContinue { branch } = self; + Some(format!("Remove unnecessary `{branch}`")) + } } /// ## What it does @@ -328,11 +348,17 @@ pub struct SuperfluousElseBreak { } impl Violation for SuperfluousElseBreak { + const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes; #[derive_message_formats] fn message(&self) -> String { let SuperfluousElseBreak { branch } = self; format!("Unnecessary `{branch}` after `break` statement") } + + fn fix_title(&self) -> Option { + let SuperfluousElseBreak { branch } = self; + Some(format!("Remove unnecessary `{branch}`")) + } } /// RET501 @@ -602,42 +628,54 @@ fn superfluous_else_node( }; for child in if_elif_body { if child.is_return_stmt() { - let diagnostic = Diagnostic::new( + let mut diagnostic = Diagnostic::new( SuperfluousElseReturn { branch }, elif_else_range(elif_else, checker.locator().contents()) .unwrap_or_else(|| elif_else.range()), ); if checker.enabled(diagnostic.kind.rule()) { + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| remove_else(checker, elif_else)); + } checker.diagnostics.push(diagnostic); } return true; } else if child.is_break_stmt() { - let diagnostic = Diagnostic::new( + let mut diagnostic = Diagnostic::new( SuperfluousElseBreak { branch }, elif_else_range(elif_else, checker.locator().contents()) .unwrap_or_else(|| elif_else.range()), ); if checker.enabled(diagnostic.kind.rule()) { + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| remove_else(checker, elif_else)); + } checker.diagnostics.push(diagnostic); } return true; } else if child.is_raise_stmt() { - let diagnostic = Diagnostic::new( + let mut diagnostic = Diagnostic::new( SuperfluousElseRaise { branch }, elif_else_range(elif_else, checker.locator().contents()) .unwrap_or_else(|| elif_else.range()), ); if checker.enabled(diagnostic.kind.rule()) { + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| remove_else(checker, elif_else)); + } checker.diagnostics.push(diagnostic); } return true; } else if child.is_continue_stmt() { - let diagnostic = Diagnostic::new( + let mut diagnostic = Diagnostic::new( SuperfluousElseContinue { branch }, elif_else_range(elif_else, checker.locator().contents()) .unwrap_or_else(|| elif_else.range()), ); if checker.enabled(diagnostic.kind.rule()) { + if checker.settings.preview.is_enabled() { + diagnostic.try_set_fix(|| remove_else(checker, elif_else)); + } checker.diagnostics.push(diagnostic); } return true; @@ -715,3 +753,67 @@ pub(crate) fn function(checker: &mut Checker, body: &[Stmt], returns: Option<&Ex } } } + +fn remove_else(checker: &mut Checker, elif_else: &ElifElseClause) -> Result { + if elif_else.test.is_some() { + // it's an elif, so we can just make it an if + + // delete "el" from "elif" + Ok(Fix::safe_edit(Edit::deletion( + elif_else.start(), + elif_else.start() + TextSize::from(2), + ))) + } else { + // the start of the line where the `else`` is + let else_line_start = checker.locator().line_start(elif_else.start()); + + // making a tokenizer to find the Colon for the `else`, not always on the same line! + let mut else_line_tokenizer = + SimpleTokenizer::starts_at(elif_else.start(), checker.locator().contents()); + + // find the Colon for the `else` + let Some(else_colon) = + else_line_tokenizer.find(|token| token.kind == SimpleTokenKind::Colon) + else { + return Err(anyhow::anyhow!("Cannot find `:` in `else` statement")); + }; + + // get the indentation of the `else`, since that is the indent level we want to end with + let Some(desired_indentation) = indentation(checker.locator(), elif_else) else { + return Err(anyhow::anyhow!("Compound statement cannot be inlined")); + }; + + // we're deleting the `else`, and it's Colon, and the rest of the line(s) they're on, + // so here we get the last position of the line the Colon is on + let else_colon_end = checker.locator().full_line_end(else_colon.end()); + + // if there is a comment on the same line as the Colon, let's keep it + // and give it the proper indentation once we unindent it + let else_comment_after_colon = else_line_tokenizer + .find(|token| token.kind.is_comment()) + .and_then(|token| { + if token.kind == SimpleTokenKind::Comment && token.start() < else_colon_end { + return Some(format!( + "{desired_indentation}{}{}", + checker.locator().slice(token), + checker.stylist().line_ending().as_str(), + )); + } + None + }) + .unwrap_or(String::new()); + + let indented = adjust_indentation( + TextRange::new(else_colon_end, elif_else.end()), + desired_indentation, + checker.locator(), + checker.stylist(), + )?; + + Ok(Fix::safe_edit(Edit::replacement( + format!("{else_comment_after_colon}{indented}"), + else_line_start, + elif_else.end(), + ))) + } +} diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET505_RET505.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET505_RET505.py.snap index 6a694dcadc1fc..e3ecd603fa652 100644 --- a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET505_RET505.py.snap +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET505_RET505.py.snap @@ -10,6 +10,7 @@ RET505.py:8:5: RET505 Unnecessary `elif` after `return` statement 9 | b = 2 10 | return w | + = help: Remove unnecessary `elif` RET505.py:23:5: RET505 Unnecessary `elif` after `return` statement | @@ -20,6 +21,7 @@ RET505.py:23:5: RET505 Unnecessary `elif` after `return` statement 24 | c = 2 25 | else: | + = help: Remove unnecessary `elif` RET505.py:41:5: RET505 Unnecessary `elif` after `return` statement | @@ -30,6 +32,7 @@ RET505.py:41:5: RET505 Unnecessary `elif` after `return` statement 42 | b = 2 43 | return w | + = help: Remove unnecessary `elif` RET505.py:53:5: RET505 Unnecessary `else` after `return` statement | @@ -40,6 +43,7 @@ RET505.py:53:5: RET505 Unnecessary `else` after `return` statement 54 | b = 2 55 | return z | + = help: Remove unnecessary `else` RET505.py:64:9: RET505 Unnecessary `else` after `return` statement | @@ -50,6 +54,7 @@ RET505.py:64:9: RET505 Unnecessary `else` after `return` statement 65 | c = 3 66 | return x | + = help: Remove unnecessary `else` RET505.py:79:5: RET505 Unnecessary `else` after `return` statement | @@ -60,6 +65,7 @@ RET505.py:79:5: RET505 Unnecessary `else` after `return` statement 80 | c = 3 81 | return | + = help: Remove unnecessary `else` RET505.py:89:9: RET505 Unnecessary `else` after `return` statement | @@ -70,6 +76,7 @@ RET505.py:89:9: RET505 Unnecessary `else` after `return` statement 90 | b = 2 91 | else: | + = help: Remove unnecessary `else` RET505.py:99:5: RET505 Unnecessary `else` after `return` statement | @@ -80,5 +87,49 @@ RET505.py:99:5: RET505 Unnecessary `else` after `return` statement 100 | try: 101 | return False | + = help: Remove unnecessary `else` + +RET505.py:137:5: RET505 Unnecessary `else` after `return` statement + | +135 | if True: +136 | return +137 | else: + | ^^^^ RET505 +138 | # comment +139 | pass + | + = help: Remove unnecessary `else` + +RET505.py:145:5: RET505 Unnecessary `else` after `return` statement + | +143 | if True: +144 | return +145 | else: # comment + | ^^^^ RET505 +146 | pass + | + = help: Remove unnecessary `else` + +RET505.py:152:5: RET505 Unnecessary `else` after `return` statement + | +150 | if True: +151 | return +152 | else\ + | ^^^^ RET505 +153 | :\ +154 | # comment + | + = help: Remove unnecessary `else` + +RET505.py:161:5: RET505 Unnecessary `else` after `return` statement + | +159 | if True: +160 | return +161 | else\ + | ^^^^ RET505 +162 | : # comment +163 | pass + | + = help: Remove unnecessary `else` diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET506_RET506.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET506_RET506.py.snap index cc9b6eafa9551..339d699edbaf5 100644 --- a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET506_RET506.py.snap +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET506_RET506.py.snap @@ -10,6 +10,7 @@ RET506.py:8:5: RET506 Unnecessary `elif` after `raise` statement 9 | b = 2 10 | raise Exception(w) | + = help: Remove unnecessary `elif` RET506.py:23:5: RET506 Unnecessary `elif` after `raise` statement | @@ -20,6 +21,7 @@ RET506.py:23:5: RET506 Unnecessary `elif` after `raise` statement 24 | raise Exception(y) 25 | else: | + = help: Remove unnecessary `elif` RET506.py:34:5: RET506 Unnecessary `else` after `raise` statement | @@ -30,6 +32,7 @@ RET506.py:34:5: RET506 Unnecessary `else` after `raise` statement 35 | b = 2 36 | raise Exception(z) | + = help: Remove unnecessary `else` RET506.py:45:9: RET506 Unnecessary `else` after `raise` statement | @@ -40,6 +43,7 @@ RET506.py:45:9: RET506 Unnecessary `else` after `raise` statement 46 | c = 3 47 | raise Exception(x) | + = help: Remove unnecessary `else` RET506.py:60:5: RET506 Unnecessary `else` after `raise` statement | @@ -50,6 +54,7 @@ RET506.py:60:5: RET506 Unnecessary `else` after `raise` statement 61 | c = 3 62 | raise Exception(y) | + = help: Remove unnecessary `else` RET506.py:70:9: RET506 Unnecessary `else` after `raise` statement | @@ -60,6 +65,7 @@ RET506.py:70:9: RET506 Unnecessary `else` after `raise` statement 71 | b = 2 72 | else: | + = help: Remove unnecessary `else` RET506.py:80:5: RET506 Unnecessary `else` after `raise` statement | @@ -70,5 +76,6 @@ RET506.py:80:5: RET506 Unnecessary `else` after `raise` statement 81 | try: 82 | raise Exception(False) | + = help: Remove unnecessary `else` diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET507_RET507.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET507_RET507.py.snap index 5776623e37821..bec73ac728298 100644 --- a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET507_RET507.py.snap +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET507_RET507.py.snap @@ -10,6 +10,7 @@ RET507.py:8:9: RET507 Unnecessary `elif` after `continue` statement 9 | continue 10 | else: | + = help: Remove unnecessary `elif` RET507.py:22:9: RET507 Unnecessary `elif` after `continue` statement | @@ -20,6 +21,7 @@ RET507.py:22:9: RET507 Unnecessary `elif` after `continue` statement 23 | c = 2 24 | else: | + = help: Remove unnecessary `elif` RET507.py:36:9: RET507 Unnecessary `else` after `continue` statement | @@ -29,6 +31,7 @@ RET507.py:36:9: RET507 Unnecessary `else` after `continue` statement | ^^^^ RET507 37 | a = z | + = help: Remove unnecessary `else` RET507.py:47:13: RET507 Unnecessary `else` after `continue` statement | @@ -39,6 +42,7 @@ RET507.py:47:13: RET507 Unnecessary `else` after `continue` statement 48 | c = 3 49 | continue | + = help: Remove unnecessary `else` RET507.py:63:9: RET507 Unnecessary `else` after `continue` statement | @@ -49,6 +53,7 @@ RET507.py:63:9: RET507 Unnecessary `else` after `continue` statement 64 | c = 3 65 | continue | + = help: Remove unnecessary `else` RET507.py:74:13: RET507 Unnecessary `else` after `continue` statement | @@ -59,6 +64,7 @@ RET507.py:74:13: RET507 Unnecessary `else` after `continue` statement 75 | b = 2 76 | else: | + = help: Remove unnecessary `else` RET507.py:85:9: RET507 Unnecessary `else` after `continue` statement | @@ -69,5 +75,6 @@ RET507.py:85:9: RET507 Unnecessary `else` after `continue` statement 86 | try: 87 | return | + = help: Remove unnecessary `else` diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET508_RET508.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET508_RET508.py.snap index c5255d93d9fae..986a08bbfaf89 100644 --- a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET508_RET508.py.snap +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__RET508_RET508.py.snap @@ -10,6 +10,7 @@ RET508.py:8:9: RET508 Unnecessary `elif` after `break` statement 9 | break 10 | else: | + = help: Remove unnecessary `elif` RET508.py:22:9: RET508 Unnecessary `elif` after `break` statement | @@ -20,6 +21,7 @@ RET508.py:22:9: RET508 Unnecessary `elif` after `break` statement 23 | c = 2 24 | else: | + = help: Remove unnecessary `elif` RET508.py:33:9: RET508 Unnecessary `else` after `break` statement | @@ -29,6 +31,7 @@ RET508.py:33:9: RET508 Unnecessary `else` after `break` statement | ^^^^ RET508 34 | a = z | + = help: Remove unnecessary `else` RET508.py:44:13: RET508 Unnecessary `else` after `break` statement | @@ -39,6 +42,7 @@ RET508.py:44:13: RET508 Unnecessary `else` after `break` statement 45 | c = 3 46 | break | + = help: Remove unnecessary `else` RET508.py:60:9: RET508 Unnecessary `else` after `break` statement | @@ -49,6 +53,7 @@ RET508.py:60:9: RET508 Unnecessary `else` after `break` statement 61 | c = 3 62 | break | + = help: Remove unnecessary `else` RET508.py:71:13: RET508 Unnecessary `else` after `break` statement | @@ -59,6 +64,7 @@ RET508.py:71:13: RET508 Unnecessary `else` after `break` statement 72 | b = 2 73 | else: | + = help: Remove unnecessary `else` RET508.py:82:9: RET508 Unnecessary `else` after `break` statement | @@ -69,6 +75,7 @@ RET508.py:82:9: RET508 Unnecessary `else` after `break` statement 83 | try: 84 | return | + = help: Remove unnecessary `else` RET508.py:158:13: RET508 Unnecessary `else` after `break` statement | @@ -78,5 +85,6 @@ RET508.py:158:13: RET508 Unnecessary `else` after `break` statement | ^^^^ RET508 159 | a = z | + = help: Remove unnecessary `else` diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET505_RET505.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET505_RET505.py.snap new file mode 100644 index 0000000000000..2291503080edc --- /dev/null +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET505_RET505.py.snap @@ -0,0 +1,282 @@ +--- +source: crates/ruff_linter/src/rules/flake8_return/mod.rs +--- +RET505.py:8:5: RET505 [*] Unnecessary `elif` after `return` statement + | + 6 | a = 1 + 7 | return y + 8 | elif z: + | ^^^^ RET505 + 9 | b = 2 +10 | return w + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +5 5 | if x: # [no-else-return] +6 6 | a = 1 +7 7 | return y +8 |- elif z: + 8 |+ if z: +9 9 | b = 2 +10 10 | return w +11 11 | else: + +RET505.py:23:5: RET505 [*] Unnecessary `elif` after `return` statement + | +21 | b = 2 +22 | return +23 | elif z: + | ^^^^ RET505 +24 | c = 2 +25 | else: + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +20 20 | else: +21 21 | b = 2 +22 22 | return +23 |- elif z: + 23 |+ if z: +24 24 | c = 2 +25 25 | else: +26 26 | c = 3 + +RET505.py:41:5: RET505 [*] Unnecessary `elif` after `return` statement + | +39 | a = 1 +40 | return y +41 | elif z: + | ^^^^ RET505 +42 | b = 2 +43 | return w + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +38 38 | if x: # [no-else-return] +39 39 | a = 1 +40 40 | return y +41 |- elif z: + 41 |+ if z: +42 42 | b = 2 +43 43 | return w +44 44 | else: + +RET505.py:53:5: RET505 [*] Unnecessary `else` after `return` statement + | +51 | a = 1 +52 | return y +53 | else: + | ^^^^ RET505 +54 | b = 2 +55 | return z + | + = help: Remove unnecessary `else` + +ℹ Safe fix +50 50 | if x: # [no-else-return] +51 51 | a = 1 +52 52 | return y +53 |- else: +54 |- b = 2 +55 |- return z + 53 |+ b = 2 + 54 |+ return z +56 55 | +57 56 | +58 57 | def foo3(x, y, z): + +RET505.py:64:9: RET505 [*] Unnecessary `else` after `return` statement + | +62 | b = 2 +63 | return y +64 | else: + | ^^^^ RET505 +65 | c = 3 +66 | return x + | + = help: Remove unnecessary `else` + +ℹ Safe fix +61 61 | if y: # [no-else-return] +62 62 | b = 2 +63 63 | return y +64 |- else: +65 |- c = 3 +66 |- return x + 64 |+ c = 3 + 65 |+ return x +67 66 | else: +68 67 | d = 4 +69 68 | return z + +RET505.py:79:5: RET505 [*] Unnecessary `else` after `return` statement + | +77 | b = 2 +78 | return +79 | else: + | ^^^^ RET505 +80 | c = 3 +81 | return + | + = help: Remove unnecessary `else` + +ℹ Safe fix +76 76 | else: +77 77 | b = 2 +78 78 | return +79 |- else: +80 |- c = 3 + 79 |+ c = 3 +81 80 | return +82 81 | +83 82 | + +RET505.py:89:9: RET505 [*] Unnecessary `else` after `return` statement + | +87 | a = 4 +88 | return +89 | else: + | ^^^^ RET505 +90 | b = 2 +91 | else: + | + = help: Remove unnecessary `else` + +ℹ Safe fix +86 86 | if y: # [no-else-return] +87 87 | a = 4 +88 88 | return +89 |- else: +90 |- b = 2 + 89 |+ b = 2 +91 90 | else: +92 91 | c = 3 +93 92 | return + +RET505.py:99:5: RET505 [*] Unnecessary `else` after `return` statement + | + 97 | if x: # [no-else-return] + 98 | return True + 99 | else: + | ^^^^ RET505 +100 | try: +101 | return False + | + = help: Remove unnecessary `else` + +ℹ Safe fix +96 96 | def bar4(x): +97 97 | if x: # [no-else-return] +98 98 | return True +99 |- else: +100 |- try: +101 |- return False +102 |- except ValueError: +103 |- return None + 99 |+ try: + 100 |+ return False + 101 |+ except ValueError: + 102 |+ return None +104 103 | +105 104 | +106 105 | ### + +RET505.py:137:5: RET505 [*] Unnecessary `else` after `return` statement + | +135 | if True: +136 | return +137 | else: + | ^^^^ RET505 +138 | # comment +139 | pass + | + = help: Remove unnecessary `else` + +ℹ Safe fix +134 134 | def bar4(x): +135 135 | if True: +136 136 | return +137 |- else: +138 |- # comment +139 |- pass + 137 |+ # comment + 138 |+ pass +140 139 | +141 140 | +142 141 | def bar5(): + +RET505.py:145:5: RET505 [*] Unnecessary `else` after `return` statement + | +143 | if True: +144 | return +145 | else: # comment + | ^^^^ RET505 +146 | pass + | + = help: Remove unnecessary `else` + +ℹ Safe fix +142 142 | def bar5(): +143 143 | if True: +144 144 | return +145 |- else: # comment +146 |- pass + 145 |+ # comment + 146 |+ pass +147 147 | +148 148 | +149 149 | def bar6(): + +RET505.py:152:5: RET505 [*] Unnecessary `else` after `return` statement + | +150 | if True: +151 | return +152 | else\ + | ^^^^ RET505 +153 | :\ +154 | # comment + | + = help: Remove unnecessary `else` + +ℹ Safe fix +149 149 | def bar6(): +150 150 | if True: +151 151 | return +152 |- else\ +153 |- :\ +154 |- # comment +155 |- pass + 152 |+ # comment + 153 |+ pass +156 154 | +157 155 | +158 156 | def bar7(): + +RET505.py:161:5: RET505 [*] Unnecessary `else` after `return` statement + | +159 | if True: +160 | return +161 | else\ + | ^^^^ RET505 +162 | : # comment +163 | pass + | + = help: Remove unnecessary `else` + +ℹ Safe fix +158 158 | def bar7(): +159 159 | if True: +160 160 | return +161 |- else\ +162 |- : # comment +163 |- pass + 161 |+ # comment + 162 |+ pass +164 163 | +165 164 | x = 0 +166 165 | + + diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET506_RET506.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET506_RET506.py.snap new file mode 100644 index 0000000000000..549850ee8d25b --- /dev/null +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET506_RET506.py.snap @@ -0,0 +1,166 @@ +--- +source: crates/ruff_linter/src/rules/flake8_return/mod.rs +--- +RET506.py:8:5: RET506 [*] Unnecessary `elif` after `raise` statement + | + 6 | a = 1 + 7 | raise Exception(y) + 8 | elif z: + | ^^^^ RET506 + 9 | b = 2 +10 | raise Exception(w) + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +5 5 | if x: # [no-else-raise] +6 6 | a = 1 +7 7 | raise Exception(y) +8 |- elif z: + 8 |+ if z: +9 9 | b = 2 +10 10 | raise Exception(w) +11 11 | else: + +RET506.py:23:5: RET506 [*] Unnecessary `elif` after `raise` statement + | +21 | b = 2 +22 | raise Exception(x) +23 | elif z: + | ^^^^ RET506 +24 | raise Exception(y) +25 | else: + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +20 20 | else: +21 21 | b = 2 +22 22 | raise Exception(x) +23 |- elif z: + 23 |+ if z: +24 24 | raise Exception(y) +25 25 | else: +26 26 | c = 3 + +RET506.py:34:5: RET506 [*] Unnecessary `else` after `raise` statement + | +32 | a = 1 +33 | raise Exception(y) +34 | else: + | ^^^^ RET506 +35 | b = 2 +36 | raise Exception(z) + | + = help: Remove unnecessary `else` + +ℹ Safe fix +31 31 | if x: # [no-else-raise] +32 32 | a = 1 +33 33 | raise Exception(y) +34 |- else: +35 |- b = 2 +36 |- raise Exception(z) + 34 |+ b = 2 + 35 |+ raise Exception(z) +37 36 | +38 37 | +39 38 | def foo3(x, y, z): + +RET506.py:45:9: RET506 [*] Unnecessary `else` after `raise` statement + | +43 | b = 2 +44 | raise Exception(y) +45 | else: + | ^^^^ RET506 +46 | c = 3 +47 | raise Exception(x) + | + = help: Remove unnecessary `else` + +ℹ Safe fix +42 42 | if y: # [no-else-raise] +43 43 | b = 2 +44 44 | raise Exception(y) +45 |- else: +46 |- c = 3 +47 |- raise Exception(x) + 45 |+ c = 3 + 46 |+ raise Exception(x) +48 47 | else: +49 48 | d = 4 +50 49 | raise Exception(z) + +RET506.py:60:5: RET506 [*] Unnecessary `else` after `raise` statement + | +58 | b = 2 +59 | raise Exception(x) +60 | else: + | ^^^^ RET506 +61 | c = 3 +62 | raise Exception(y) + | + = help: Remove unnecessary `else` + +ℹ Safe fix +57 57 | else: +58 58 | b = 2 +59 59 | raise Exception(x) +60 |- else: +61 |- c = 3 + 60 |+ c = 3 +62 61 | raise Exception(y) +63 62 | +64 63 | + +RET506.py:70:9: RET506 [*] Unnecessary `else` after `raise` statement + | +68 | a = 4 +69 | raise Exception(x) +70 | else: + | ^^^^ RET506 +71 | b = 2 +72 | else: + | + = help: Remove unnecessary `else` + +ℹ Safe fix +67 67 | if y: # [no-else-raise] +68 68 | a = 4 +69 69 | raise Exception(x) +70 |- else: +71 |- b = 2 + 70 |+ b = 2 +72 71 | else: +73 72 | c = 3 +74 73 | raise Exception(y) + +RET506.py:80:5: RET506 [*] Unnecessary `else` after `raise` statement + | +78 | if x: # [no-else-raise] +79 | raise Exception(True) +80 | else: + | ^^^^ RET506 +81 | try: +82 | raise Exception(False) + | + = help: Remove unnecessary `else` + +ℹ Safe fix +77 77 | def bar4(x): +78 78 | if x: # [no-else-raise] +79 79 | raise Exception(True) +80 |- else: +81 |- try: +82 |- raise Exception(False) +83 |- except ValueError: +84 |- raise Exception(None) + 80 |+ try: + 81 |+ raise Exception(False) + 82 |+ except ValueError: + 83 |+ raise Exception(None) +85 84 | +86 85 | +87 86 | ### + + diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET507_RET507.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET507_RET507.py.snap new file mode 100644 index 0000000000000..1a745fc2f576f --- /dev/null +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET507_RET507.py.snap @@ -0,0 +1,163 @@ +--- +source: crates/ruff_linter/src/rules/flake8_return/mod.rs +--- +RET507.py:8:9: RET507 [*] Unnecessary `elif` after `continue` statement + | + 6 | if i < y: # [no-else-continue] + 7 | continue + 8 | elif i < w: + | ^^^^ RET507 + 9 | continue +10 | else: + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +5 5 | for i in x: +6 6 | if i < y: # [no-else-continue] +7 7 | continue +8 |- elif i < w: + 8 |+ if i < w: +9 9 | continue +10 10 | else: +11 11 | a = z + +RET507.py:22:9: RET507 [*] Unnecessary `elif` after `continue` statement + | +20 | b = 2 +21 | continue +22 | elif z: + | ^^^^ RET507 +23 | c = 2 +24 | else: + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +19 19 | else: +20 20 | b = 2 +21 21 | continue +22 |- elif z: + 22 |+ if z: +23 23 | c = 2 +24 24 | else: +25 25 | c = 3 + +RET507.py:36:9: RET507 [*] Unnecessary `else` after `continue` statement + | +34 | if i < y: # [no-else-continue] +35 | continue +36 | else: + | ^^^^ RET507 +37 | a = z + | + = help: Remove unnecessary `else` + +ℹ Safe fix +33 33 | for i in x: +34 34 | if i < y: # [no-else-continue] +35 35 | continue +36 |- else: +37 |- a = z + 36 |+ a = z +38 37 | +39 38 | +40 39 | def foo3(x, y, z): + +RET507.py:47:13: RET507 [*] Unnecessary `else` after `continue` statement + | +45 | b = 2 +46 | continue +47 | else: + | ^^^^ RET507 +48 | c = 3 +49 | continue + | + = help: Remove unnecessary `else` + +ℹ Safe fix +44 44 | if z: # [no-else-continue] +45 45 | b = 2 +46 46 | continue +47 |- else: +48 |- c = 3 +49 |- continue + 47 |+ c = 3 + 48 |+ continue +50 49 | else: +51 50 | d = 4 +52 51 | continue + +RET507.py:63:9: RET507 [*] Unnecessary `else` after `continue` statement + | +61 | b = 2 +62 | continue +63 | else: + | ^^^^ RET507 +64 | c = 3 +65 | continue + | + = help: Remove unnecessary `else` + +ℹ Safe fix +60 60 | else: +61 61 | b = 2 +62 62 | continue +63 |- else: +64 |- c = 3 + 63 |+ c = 3 +65 64 | continue +66 65 | +67 66 | + +RET507.py:74:13: RET507 [*] Unnecessary `else` after `continue` statement + | +72 | a = 4 +73 | continue +74 | else: + | ^^^^ RET507 +75 | b = 2 +76 | else: + | + = help: Remove unnecessary `else` + +ℹ Safe fix +71 71 | if y: # [no-else-continue] +72 72 | a = 4 +73 73 | continue +74 |- else: +75 |- b = 2 + 74 |+ b = 2 +76 75 | else: +77 76 | c = 3 +78 77 | continue + +RET507.py:85:9: RET507 [*] Unnecessary `else` after `continue` statement + | +83 | if x: # [no-else-continue] +84 | continue +85 | else: + | ^^^^ RET507 +86 | try: +87 | return + | + = help: Remove unnecessary `else` + +ℹ Safe fix +82 82 | for i in range(10): +83 83 | if x: # [no-else-continue] +84 84 | continue +85 |- else: +86 |- try: +87 |- return +88 |- except ValueError: +89 |- continue + 85 |+ try: + 86 |+ return + 87 |+ except ValueError: + 88 |+ continue +90 89 | +91 90 | +92 91 | def bar1(x, y, z): + + diff --git a/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET508_RET508.py.snap b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET508_RET508.py.snap new file mode 100644 index 0000000000000..f35bda0f4e39e --- /dev/null +++ b/crates/ruff_linter/src/rules/flake8_return/snapshots/ruff_linter__rules__flake8_return__tests__preview__RET508_RET508.py.snap @@ -0,0 +1,181 @@ +--- +source: crates/ruff_linter/src/rules/flake8_return/mod.rs +--- +RET508.py:8:9: RET508 [*] Unnecessary `elif` after `break` statement + | + 6 | if i > y: # [no-else-break] + 7 | break + 8 | elif i > w: + | ^^^^ RET508 + 9 | break +10 | else: + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +5 5 | for i in x: +6 6 | if i > y: # [no-else-break] +7 7 | break +8 |- elif i > w: + 8 |+ if i > w: +9 9 | break +10 10 | else: +11 11 | a = z + +RET508.py:22:9: RET508 [*] Unnecessary `elif` after `break` statement + | +20 | b = 2 +21 | break +22 | elif z: + | ^^^^ RET508 +23 | c = 2 +24 | else: + | + = help: Remove unnecessary `elif` + +ℹ Safe fix +19 19 | else: +20 20 | b = 2 +21 21 | break +22 |- elif z: + 22 |+ if z: +23 23 | c = 2 +24 24 | else: +25 25 | c = 3 + +RET508.py:33:9: RET508 [*] Unnecessary `else` after `break` statement + | +31 | if i > y: # [no-else-break] +32 | break +33 | else: + | ^^^^ RET508 +34 | a = z + | + = help: Remove unnecessary `else` + +ℹ Safe fix +30 30 | for i in x: +31 31 | if i > y: # [no-else-break] +32 32 | break +33 |- else: +34 |- a = z + 33 |+ a = z +35 34 | +36 35 | +37 36 | def foo3(x, y, z): + +RET508.py:44:13: RET508 [*] Unnecessary `else` after `break` statement + | +42 | b = 2 +43 | break +44 | else: + | ^^^^ RET508 +45 | c = 3 +46 | break + | + = help: Remove unnecessary `else` + +ℹ Safe fix +41 41 | if z: # [no-else-break] +42 42 | b = 2 +43 43 | break +44 |- else: +45 |- c = 3 +46 |- break + 44 |+ c = 3 + 45 |+ break +47 46 | else: +48 47 | d = 4 +49 48 | break + +RET508.py:60:9: RET508 [*] Unnecessary `else` after `break` statement + | +58 | b = 2 +59 | break +60 | else: + | ^^^^ RET508 +61 | c = 3 +62 | break + | + = help: Remove unnecessary `else` + +ℹ Safe fix +57 57 | else: +58 58 | b = 2 +59 59 | break +60 |- else: +61 |- c = 3 + 60 |+ c = 3 +62 61 | break +63 62 | +64 63 | + +RET508.py:71:13: RET508 [*] Unnecessary `else` after `break` statement + | +69 | a = 4 +70 | break +71 | else: + | ^^^^ RET508 +72 | b = 2 +73 | else: + | + = help: Remove unnecessary `else` + +ℹ Safe fix +68 68 | if y: # [no-else-break] +69 69 | a = 4 +70 70 | break +71 |- else: +72 |- b = 2 + 71 |+ b = 2 +73 72 | else: +74 73 | c = 3 +75 74 | break + +RET508.py:82:9: RET508 [*] Unnecessary `else` after `break` statement + | +80 | if x: # [no-else-break] +81 | break +82 | else: + | ^^^^ RET508 +83 | try: +84 | return + | + = help: Remove unnecessary `else` + +ℹ Safe fix +79 79 | for i in range(10): +80 80 | if x: # [no-else-break] +81 81 | break +82 |- else: +83 |- try: +84 |- return +85 |- except ValueError: +86 |- break + 82 |+ try: + 83 |+ return + 84 |+ except ValueError: + 85 |+ break +87 86 | +88 87 | +89 88 | ### + +RET508.py:158:13: RET508 [*] Unnecessary `else` after `break` statement + | +156 | if i > w: +157 | break +158 | else: + | ^^^^ RET508 +159 | a = z + | + = help: Remove unnecessary `else` + +ℹ Safe fix +155 155 | else: +156 156 | if i > w: +157 157 | break +158 |- else: +159 |- a = z + 158 |+ a = z + + From 5fe0fdd0a877b05846595459c822c7c73c1adab2 Mon Sep 17 00:00:00 2001 From: Micha Reiser Date: Thu, 25 Jan 2024 15:41:13 +0100 Subject: [PATCH 31/31] Delete `is_node_with_body` method (#9643) --- crates/ruff_python_ast/src/node.rs | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/crates/ruff_python_ast/src/node.rs b/crates/ruff_python_ast/src/node.rs index 35a536004c2a3..a2b534aba4803 100644 --- a/crates/ruff_python_ast/src/node.rs +++ b/crates/ruff_python_ast/src/node.rs @@ -5968,22 +5968,6 @@ impl<'a> AnyNodeRef<'a> { } } - pub const fn is_node_with_body(self) -> bool { - matches!( - self, - AnyNodeRef::StmtIf(_) - | AnyNodeRef::StmtFor(_) - | AnyNodeRef::StmtWhile(_) - | AnyNodeRef::StmtWith(_) - | AnyNodeRef::StmtMatch(_) - | AnyNodeRef::StmtFunctionDef(_) - | AnyNodeRef::StmtClassDef(_) - | AnyNodeRef::StmtTry(_) - | AnyNodeRef::ExceptHandlerExceptHandler(_) - | AnyNodeRef::ElifElseClause(_) - ) - } - /// In our AST, only some alternative branches are represented as a node. This has historical /// reasons, e.g. we added a node for elif/else in if statements which was not originally /// present in the parser.