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[rust.git] / src / tools / clippy / clippy_lints / src / lib.rs
1 #![feature(array_windows)]
2 #![feature(binary_heap_into_iter_sorted)]
3 #![feature(box_patterns)]
4 #![feature(control_flow_enum)]
5 #![feature(drain_filter)]
6 #![feature(iter_intersperse)]
7 #![feature(let_chains)]
8 #![feature(let_else)]
9 #![feature(lint_reasons)]
10 #![feature(once_cell)]
11 #![feature(rustc_private)]
12 #![feature(stmt_expr_attributes)]
13 #![recursion_limit = "512"]
14 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
15 #![allow(clippy::missing_docs_in_private_items, clippy::must_use_candidate)]
16 #![warn(trivial_casts, trivial_numeric_casts)]
17 // warn on lints, that are included in `rust-lang/rust`s bootstrap
18 #![warn(rust_2018_idioms, unused_lifetimes)]
19 // warn on rustc internal lints
20 #![warn(rustc::internal)]
21 // Disable this rustc lint for now, as it was also done in rustc
22 #![allow(rustc::potential_query_instability)]
23
24 // FIXME: switch to something more ergonomic here, once available.
25 // (Currently there is no way to opt into sysroot crates without `extern crate`.)
26 extern crate rustc_arena;
27 extern crate rustc_ast;
28 extern crate rustc_ast_pretty;
29 extern crate rustc_attr;
30 extern crate rustc_data_structures;
31 extern crate rustc_driver;
32 extern crate rustc_errors;
33 extern crate rustc_hir;
34 extern crate rustc_hir_pretty;
35 extern crate rustc_index;
36 extern crate rustc_infer;
37 extern crate rustc_lexer;
38 extern crate rustc_lint;
39 extern crate rustc_middle;
40 extern crate rustc_mir_dataflow;
41 extern crate rustc_parse;
42 extern crate rustc_parse_format;
43 extern crate rustc_session;
44 extern crate rustc_span;
45 extern crate rustc_target;
46 extern crate rustc_trait_selection;
47 extern crate rustc_typeck;
48
49 #[macro_use]
50 extern crate clippy_utils;
51
52 use clippy_utils::parse_msrv;
53 use rustc_data_structures::fx::FxHashSet;
54 use rustc_lint::LintId;
55 use rustc_session::Session;
56
57 /// Macro used to declare a Clippy lint.
58 ///
59 /// Every lint declaration consists of 4 parts:
60 ///
61 /// 1. The documentation, which is used for the website
62 /// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
63 /// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
64 ///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
65 /// 4. The `description` that contains a short explanation on what's wrong with code where the
66 ///    lint is triggered.
67 ///
68 /// Currently the categories `style`, `correctness`, `suspicious`, `complexity` and `perf` are
69 /// enabled by default. As said in the README.md of this repository, if the lint level mapping
70 /// changes, please update README.md.
71 ///
72 /// # Example
73 ///
74 /// ```
75 /// #![feature(rustc_private)]
76 /// extern crate rustc_session;
77 /// use rustc_session::declare_tool_lint;
78 /// use clippy_lints::declare_clippy_lint;
79 ///
80 /// declare_clippy_lint! {
81 ///     /// ### What it does
82 ///     /// Checks for ... (describe what the lint matches).
83 ///     ///
84 ///     /// ### Why is this bad?
85 ///     /// Supply the reason for linting the code.
86 ///     ///
87 ///     /// ### Example
88 ///     /// ```rust
89 ///     /// Insert a short example of code that triggers the lint
90 ///     /// ```
91 ///     ///
92 ///     /// Use instead:
93 ///     /// ```rust
94 ///     /// Insert a short example of improved code that doesn't trigger the lint
95 ///     /// ```
96 ///     pub LINT_NAME,
97 ///     pedantic,
98 ///     "description"
99 /// }
100 /// ```
101 /// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
102 #[macro_export]
103 macro_rules! declare_clippy_lint {
104     { $(#[$attr:meta])* pub $name:tt, style, $description:tt } => {
105         declare_tool_lint! {
106             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
107         }
108     };
109     { $(#[$attr:meta])* pub $name:tt, correctness, $description:tt } => {
110         declare_tool_lint! {
111             $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
112         }
113     };
114     { $(#[$attr:meta])* pub $name:tt, suspicious, $description:tt } => {
115         declare_tool_lint! {
116             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
117         }
118     };
119     { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
120         declare_tool_lint! {
121             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
122         }
123     };
124     { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
125         declare_tool_lint! {
126             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
127         }
128     };
129     { $(#[$attr:meta])* pub $name:tt, pedantic, $description:tt } => {
130         declare_tool_lint! {
131             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
132         }
133     };
134     { $(#[$attr:meta])* pub $name:tt, restriction, $description:tt } => {
135         declare_tool_lint! {
136             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
137         }
138     };
139     { $(#[$attr:meta])* pub $name:tt, cargo, $description:tt } => {
140         declare_tool_lint! {
141             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
142         }
143     };
144     { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
145         declare_tool_lint! {
146             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
147         }
148     };
149     { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
150         declare_tool_lint! {
151             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
152         }
153     };
154     { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
155         declare_tool_lint! {
156             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
157         }
158     };
159 }
160
161 #[cfg(feature = "internal")]
162 mod deprecated_lints;
163 #[cfg_attr(feature = "internal", allow(clippy::missing_clippy_version_attribute))]
164 mod utils;
165
166 mod renamed_lints;
167
168 // begin lints modules, do not remove this comment, it’s used in `update_lints`
169 mod absurd_extreme_comparisons;
170 mod almost_complete_letter_range;
171 mod approx_const;
172 mod as_conversions;
173 mod as_underscore;
174 mod asm_syntax;
175 mod assertions_on_constants;
176 mod assign_ops;
177 mod async_yields_async;
178 mod attrs;
179 mod await_holding_invalid;
180 mod bit_mask;
181 mod blacklisted_name;
182 mod blocks_in_if_conditions;
183 mod bool_assert_comparison;
184 mod booleans;
185 mod borrow_as_ptr;
186 mod borrow_deref_ref;
187 mod bytecount;
188 mod bytes_count_to_len;
189 mod cargo;
190 mod case_sensitive_file_extension_comparisons;
191 mod casts;
192 mod checked_conversions;
193 mod cognitive_complexity;
194 mod collapsible_if;
195 mod comparison_chain;
196 mod copies;
197 mod copy_iterator;
198 mod crate_in_macro_def;
199 mod create_dir;
200 mod dbg_macro;
201 mod default;
202 mod default_numeric_fallback;
203 mod default_union_representation;
204 mod dereference;
205 mod derivable_impls;
206 mod derive;
207 mod disallowed_methods;
208 mod disallowed_script_idents;
209 mod disallowed_types;
210 mod doc;
211 mod doc_link_with_quotes;
212 mod double_comparison;
213 mod double_parens;
214 mod drop_forget_ref;
215 mod duplicate_mod;
216 mod duration_subsec;
217 mod else_if_without_else;
218 mod empty_drop;
219 mod empty_enum;
220 mod empty_structs_with_brackets;
221 mod entry;
222 mod enum_clike;
223 mod enum_variants;
224 mod eq_op;
225 mod equatable_if_let;
226 mod erasing_op;
227 mod escape;
228 mod eta_reduction;
229 mod excessive_bools;
230 mod exhaustive_items;
231 mod exit;
232 mod explicit_write;
233 mod fallible_impl_from;
234 mod float_equality_without_abs;
235 mod float_literal;
236 mod floating_point_arithmetic;
237 mod format;
238 mod format_args;
239 mod format_impl;
240 mod format_push_string;
241 mod formatting;
242 mod from_over_into;
243 mod from_str_radix_10;
244 mod functions;
245 mod future_not_send;
246 mod get_first;
247 mod identity_op;
248 mod if_let_mutex;
249 mod if_not_else;
250 mod if_then_some_else_none;
251 mod implicit_hasher;
252 mod implicit_return;
253 mod implicit_saturating_sub;
254 mod inconsistent_struct_constructor;
255 mod index_refutable_slice;
256 mod indexing_slicing;
257 mod infinite_iter;
258 mod inherent_impl;
259 mod inherent_to_string;
260 mod init_numbered_fields;
261 mod inline_fn_without_body;
262 mod int_plus_one;
263 mod integer_division;
264 mod invalid_upcast_comparisons;
265 mod items_after_statements;
266 mod iter_not_returning_iterator;
267 mod large_const_arrays;
268 mod large_enum_variant;
269 mod large_include_file;
270 mod large_stack_arrays;
271 mod len_zero;
272 mod let_if_seq;
273 mod let_underscore;
274 mod lifetimes;
275 mod literal_representation;
276 mod loops;
277 mod macro_use;
278 mod main_recursion;
279 mod manual_assert;
280 mod manual_async_fn;
281 mod manual_bits;
282 mod manual_non_exhaustive;
283 mod manual_ok_or;
284 mod manual_strip;
285 mod map_clone;
286 mod map_err_ignore;
287 mod map_unit_fn;
288 mod match_result_ok;
289 mod matches;
290 mod mem_forget;
291 mod mem_replace;
292 mod methods;
293 mod minmax;
294 mod misc;
295 mod misc_early;
296 mod mismatching_type_param_order;
297 mod missing_const_for_fn;
298 mod missing_doc;
299 mod missing_enforced_import_rename;
300 mod missing_inline;
301 mod mixed_read_write_in_expression;
302 mod module_style;
303 mod modulo_arithmetic;
304 mod mut_key;
305 mod mut_mut;
306 mod mut_mutex_lock;
307 mod mut_reference;
308 mod mutable_debug_assertion;
309 mod mutex_atomic;
310 mod needless_arbitrary_self_type;
311 mod needless_bitwise_bool;
312 mod needless_bool;
313 mod needless_borrowed_ref;
314 mod needless_continue;
315 mod needless_for_each;
316 mod needless_late_init;
317 mod needless_parens_on_range_literals;
318 mod needless_pass_by_value;
319 mod needless_question_mark;
320 mod needless_update;
321 mod neg_cmp_op_on_partial_ord;
322 mod neg_multiply;
323 mod new_without_default;
324 mod no_effect;
325 mod non_copy_const;
326 mod non_expressive_names;
327 mod non_octal_unix_permissions;
328 mod non_send_fields_in_send_ty;
329 mod nonstandard_macro_braces;
330 mod numeric_arithmetic;
331 mod octal_escapes;
332 mod only_used_in_recursion;
333 mod open_options;
334 mod option_env_unwrap;
335 mod option_if_let_else;
336 mod overflow_check_conditional;
337 mod panic_in_result_fn;
338 mod panic_unimplemented;
339 mod partialeq_ne_impl;
340 mod pass_by_ref_or_value;
341 mod path_buf_push_overwrite;
342 mod pattern_type_mismatch;
343 mod precedence;
344 mod ptr;
345 mod ptr_eq;
346 mod ptr_offset_with_cast;
347 mod pub_use;
348 mod question_mark;
349 mod ranges;
350 mod rc_clone_in_vec_init;
351 mod read_zero_byte_vec;
352 mod redundant_clone;
353 mod redundant_closure_call;
354 mod redundant_else;
355 mod redundant_field_names;
356 mod redundant_pub_crate;
357 mod redundant_slicing;
358 mod redundant_static_lifetimes;
359 mod ref_option_ref;
360 mod reference;
361 mod regex;
362 mod repeat_once;
363 mod return_self_not_must_use;
364 mod returns;
365 mod same_name_method;
366 mod self_assignment;
367 mod self_named_constructors;
368 mod semicolon_if_nothing_returned;
369 mod serde_api;
370 mod shadow;
371 mod single_char_lifetime_names;
372 mod single_component_path_imports;
373 mod size_of_in_element_count;
374 mod slow_vector_initialization;
375 mod stable_sort_primitive;
376 mod strings;
377 mod strlen_on_c_strings;
378 mod suspicious_operation_groupings;
379 mod suspicious_trait_impl;
380 mod swap;
381 mod swap_ptr_to_ref;
382 mod tabs_in_doc_comments;
383 mod temporary_assignment;
384 mod to_digit_is_some;
385 mod trailing_empty_array;
386 mod trait_bounds;
387 mod transmute;
388 mod transmuting_null;
389 mod types;
390 mod undocumented_unsafe_blocks;
391 mod unicode;
392 mod uninit_vec;
393 mod unit_hash;
394 mod unit_return_expecting_ord;
395 mod unit_types;
396 mod unnamed_address;
397 mod unnecessary_owned_empty_strings;
398 mod unnecessary_self_imports;
399 mod unnecessary_sort_by;
400 mod unnecessary_wraps;
401 mod unnested_or_patterns;
402 mod unsafe_removed_from_name;
403 mod unused_async;
404 mod unused_io_amount;
405 mod unused_rounding;
406 mod unused_self;
407 mod unused_unit;
408 mod unwrap;
409 mod unwrap_in_result;
410 mod upper_case_acronyms;
411 mod use_self;
412 mod useless_conversion;
413 mod vec;
414 mod vec_init_then_push;
415 mod vec_resize_to_zero;
416 mod verbose_file_reads;
417 mod wildcard_imports;
418 mod write;
419 mod zero_div_zero;
420 mod zero_sized_map_values;
421 // end lints modules, do not remove this comment, it’s used in `update_lints`
422
423 pub use crate::utils::conf::Conf;
424 use crate::utils::conf::{format_error, TryConf};
425
426 /// Register all pre expansion lints
427 ///
428 /// Pre-expansion lints run before any macro expansion has happened.
429 ///
430 /// Note that due to the architecture of the compiler, currently `cfg_attr` attributes on crate
431 /// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass.
432 ///
433 /// Used in `./src/driver.rs`.
434 pub fn register_pre_expansion_lints(store: &mut rustc_lint::LintStore, sess: &Session, conf: &Conf) {
435     // NOTE: Do not add any more pre-expansion passes. These should be removed eventually.
436
437     let msrv = conf.msrv.as_ref().and_then(|s| {
438         parse_msrv(s, None, None).or_else(|| {
439             sess.err(&format!(
440                 "error reading Clippy's configuration file. `{}` is not a valid Rust version",
441                 s
442             ));
443             None
444         })
445     });
446
447     store.register_pre_expansion_pass(|| Box::new(write::Write::default()));
448     store.register_pre_expansion_pass(move || Box::new(attrs::EarlyAttributes { msrv }));
449 }
450
451 #[doc(hidden)]
452 pub fn read_conf(sess: &Session) -> Conf {
453     let file_name = match utils::conf::lookup_conf_file() {
454         Ok(Some(path)) => path,
455         Ok(None) => return Conf::default(),
456         Err(error) => {
457             sess.struct_err(&format!("error finding Clippy's configuration file: {}", error))
458                 .emit();
459             return Conf::default();
460         },
461     };
462
463     let TryConf { conf, errors } = utils::conf::read(&file_name);
464     // all conf errors are non-fatal, we just use the default conf in case of error
465     for error in errors {
466         sess.struct_err(&format!(
467             "error reading Clippy's configuration file `{}`: {}",
468             file_name.display(),
469             format_error(error)
470         ))
471         .emit();
472     }
473
474     conf
475 }
476
477 /// Register all lints and lint groups with the rustc plugin registry
478 ///
479 /// Used in `./src/driver.rs`.
480 #[expect(clippy::too_many_lines)]
481 pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf: &Conf) {
482     register_removed_non_tool_lints(store);
483
484     include!("lib.deprecated.rs");
485
486     include!("lib.register_lints.rs");
487     include!("lib.register_restriction.rs");
488     include!("lib.register_pedantic.rs");
489
490     #[cfg(feature = "internal")]
491     include!("lib.register_internal.rs");
492
493     include!("lib.register_all.rs");
494     include!("lib.register_style.rs");
495     include!("lib.register_complexity.rs");
496     include!("lib.register_correctness.rs");
497     include!("lib.register_suspicious.rs");
498     include!("lib.register_perf.rs");
499     include!("lib.register_cargo.rs");
500     include!("lib.register_nursery.rs");
501
502     #[cfg(feature = "internal")]
503     {
504         if std::env::var("ENABLE_METADATA_COLLECTION").eq(&Ok("1".to_string())) {
505             store.register_late_pass(|| Box::new(utils::internal_lints::metadata_collector::MetadataCollector::new()));
506             return;
507         }
508     }
509
510     // all the internal lints
511     #[cfg(feature = "internal")]
512     {
513         store.register_early_pass(|| Box::new(utils::internal_lints::ClippyLintsInternal));
514         store.register_early_pass(|| Box::new(utils::internal_lints::ProduceIce));
515         store.register_late_pass(|| Box::new(utils::internal_lints::CollapsibleCalls));
516         store.register_late_pass(|| Box::new(utils::internal_lints::CompilerLintFunctions::new()));
517         store.register_late_pass(|| Box::new(utils::internal_lints::IfChainStyle));
518         store.register_late_pass(|| Box::new(utils::internal_lints::InvalidPaths));
519         store.register_late_pass(|| Box::new(utils::internal_lints::InterningDefinedSymbol::default()));
520         store.register_late_pass(|| Box::new(utils::internal_lints::LintWithoutLintPass::default()));
521         store.register_late_pass(|| Box::new(utils::internal_lints::MatchTypeOnDiagItem));
522         store.register_late_pass(|| Box::new(utils::internal_lints::OuterExpnDataPass));
523         store.register_late_pass(|| Box::new(utils::internal_lints::MsrvAttrImpl));
524     }
525
526     store.register_late_pass(|| Box::new(utils::dump_hir::DumpHir));
527     store.register_late_pass(|| Box::new(utils::author::Author));
528     let await_holding_invalid_types = conf.await_holding_invalid_types.clone();
529     store.register_late_pass(move || {
530         Box::new(await_holding_invalid::AwaitHolding::new(
531             await_holding_invalid_types.clone(),
532         ))
533     });
534     store.register_late_pass(|| Box::new(serde_api::SerdeApi));
535     let vec_box_size_threshold = conf.vec_box_size_threshold;
536     let type_complexity_threshold = conf.type_complexity_threshold;
537     let avoid_breaking_exported_api = conf.avoid_breaking_exported_api;
538     store.register_late_pass(move || {
539         Box::new(types::Types::new(
540             vec_box_size_threshold,
541             type_complexity_threshold,
542             avoid_breaking_exported_api,
543         ))
544     });
545     store.register_late_pass(|| Box::new(booleans::NonminimalBool));
546     store.register_late_pass(|| Box::new(needless_bitwise_bool::NeedlessBitwiseBool));
547     store.register_late_pass(|| Box::new(eq_op::EqOp));
548     store.register_late_pass(|| Box::new(enum_clike::UnportableVariant));
549     store.register_late_pass(|| Box::new(float_literal::FloatLiteral));
550     let verbose_bit_mask_threshold = conf.verbose_bit_mask_threshold;
551     store.register_late_pass(move || Box::new(bit_mask::BitMask::new(verbose_bit_mask_threshold)));
552     store.register_late_pass(|| Box::new(ptr::Ptr));
553     store.register_late_pass(|| Box::new(ptr_eq::PtrEq));
554     store.register_late_pass(|| Box::new(needless_bool::NeedlessBool));
555     store.register_late_pass(|| Box::new(needless_bool::BoolComparison));
556     store.register_late_pass(|| Box::new(needless_for_each::NeedlessForEach));
557     store.register_late_pass(|| Box::new(misc::MiscLints));
558     store.register_late_pass(|| Box::new(eta_reduction::EtaReduction));
559     store.register_late_pass(|| Box::new(identity_op::IdentityOp));
560     store.register_late_pass(|| Box::new(erasing_op::ErasingOp));
561     store.register_late_pass(|| Box::new(mut_mut::MutMut));
562     store.register_late_pass(|| Box::new(mut_reference::UnnecessaryMutPassed));
563     store.register_late_pass(|| Box::new(len_zero::LenZero));
564     store.register_late_pass(|| Box::new(attrs::Attributes));
565     store.register_late_pass(|| Box::new(blocks_in_if_conditions::BlocksInIfConditions));
566     store.register_late_pass(|| Box::new(unicode::Unicode));
567     store.register_late_pass(|| Box::new(uninit_vec::UninitVec));
568     store.register_late_pass(|| Box::new(unit_hash::UnitHash));
569     store.register_late_pass(|| Box::new(unit_return_expecting_ord::UnitReturnExpectingOrd));
570     store.register_late_pass(|| Box::new(strings::StringAdd));
571     store.register_late_pass(|| Box::new(implicit_return::ImplicitReturn));
572     store.register_late_pass(|| Box::new(implicit_saturating_sub::ImplicitSaturatingSub));
573     store.register_late_pass(|| Box::new(default_numeric_fallback::DefaultNumericFallback));
574     store.register_late_pass(|| Box::new(inconsistent_struct_constructor::InconsistentStructConstructor));
575     store.register_late_pass(|| Box::new(non_octal_unix_permissions::NonOctalUnixPermissions));
576     store.register_early_pass(|| Box::new(unnecessary_self_imports::UnnecessarySelfImports));
577
578     let msrv = conf.msrv.as_ref().and_then(|s| {
579         parse_msrv(s, None, None).or_else(|| {
580             sess.err(&format!(
581                 "error reading Clippy's configuration file. `{}` is not a valid Rust version",
582                 s
583             ));
584             None
585         })
586     });
587
588     let avoid_breaking_exported_api = conf.avoid_breaking_exported_api;
589     let allow_expect_in_tests = conf.allow_expect_in_tests;
590     let allow_unwrap_in_tests = conf.allow_unwrap_in_tests;
591     store.register_late_pass(move || Box::new(approx_const::ApproxConstant::new(msrv)));
592     store.register_late_pass(move || {
593         Box::new(methods::Methods::new(
594             avoid_breaking_exported_api,
595             msrv,
596             allow_expect_in_tests,
597             allow_unwrap_in_tests,
598         ))
599     });
600     store.register_late_pass(move || Box::new(matches::Matches::new(msrv)));
601     store.register_early_pass(move || Box::new(manual_non_exhaustive::ManualNonExhaustiveStruct::new(msrv)));
602     store.register_late_pass(move || Box::new(manual_non_exhaustive::ManualNonExhaustiveEnum::new(msrv)));
603     store.register_late_pass(move || Box::new(manual_strip::ManualStrip::new(msrv)));
604     store.register_early_pass(move || Box::new(redundant_static_lifetimes::RedundantStaticLifetimes::new(msrv)));
605     store.register_early_pass(move || Box::new(redundant_field_names::RedundantFieldNames::new(msrv)));
606     store.register_late_pass(move || Box::new(checked_conversions::CheckedConversions::new(msrv)));
607     store.register_late_pass(move || Box::new(mem_replace::MemReplace::new(msrv)));
608     store.register_late_pass(move || Box::new(ranges::Ranges::new(msrv)));
609     store.register_late_pass(move || Box::new(from_over_into::FromOverInto::new(msrv)));
610     store.register_late_pass(move || Box::new(use_self::UseSelf::new(msrv)));
611     store.register_late_pass(move || Box::new(missing_const_for_fn::MissingConstForFn::new(msrv)));
612     store.register_late_pass(move || Box::new(needless_question_mark::NeedlessQuestionMark));
613     store.register_late_pass(move || Box::new(casts::Casts::new(msrv)));
614     store.register_early_pass(move || Box::new(unnested_or_patterns::UnnestedOrPatterns::new(msrv)));
615     store.register_late_pass(move || Box::new(map_clone::MapClone::new(msrv)));
616
617     store.register_late_pass(|| Box::new(size_of_in_element_count::SizeOfInElementCount));
618     store.register_late_pass(|| Box::new(same_name_method::SameNameMethod));
619     let max_suggested_slice_pattern_length = conf.max_suggested_slice_pattern_length;
620     store.register_late_pass(move || {
621         Box::new(index_refutable_slice::IndexRefutableSlice::new(
622             max_suggested_slice_pattern_length,
623             msrv,
624         ))
625     });
626     store.register_late_pass(|| Box::new(map_err_ignore::MapErrIgnore));
627     store.register_late_pass(|| Box::new(shadow::Shadow::default()));
628     store.register_late_pass(|| Box::new(unit_types::UnitTypes));
629     store.register_late_pass(|| Box::new(loops::Loops));
630     store.register_late_pass(|| Box::new(main_recursion::MainRecursion::default()));
631     store.register_late_pass(|| Box::new(lifetimes::Lifetimes));
632     store.register_late_pass(|| Box::new(entry::HashMapPass));
633     store.register_late_pass(|| Box::new(minmax::MinMaxPass));
634     store.register_late_pass(|| Box::new(open_options::OpenOptions));
635     store.register_late_pass(|| Box::new(zero_div_zero::ZeroDiv));
636     store.register_late_pass(|| Box::new(mutex_atomic::Mutex));
637     store.register_late_pass(|| Box::new(needless_update::NeedlessUpdate));
638     store.register_late_pass(|| Box::new(needless_borrowed_ref::NeedlessBorrowedRef));
639     store.register_late_pass(|| Box::new(borrow_deref_ref::BorrowDerefRef));
640     store.register_late_pass(|| Box::new(no_effect::NoEffect));
641     store.register_late_pass(|| Box::new(temporary_assignment::TemporaryAssignment));
642     store.register_late_pass(|| Box::new(transmute::Transmute));
643     let cognitive_complexity_threshold = conf.cognitive_complexity_threshold;
644     store.register_late_pass(move || {
645         Box::new(cognitive_complexity::CognitiveComplexity::new(
646             cognitive_complexity_threshold,
647         ))
648     });
649     let too_large_for_stack = conf.too_large_for_stack;
650     store.register_late_pass(move || Box::new(escape::BoxedLocal { too_large_for_stack }));
651     store.register_late_pass(move || Box::new(vec::UselessVec { too_large_for_stack }));
652     store.register_late_pass(|| Box::new(panic_unimplemented::PanicUnimplemented));
653     store.register_late_pass(|| Box::new(strings::StringLitAsBytes));
654     store.register_late_pass(|| Box::new(derive::Derive));
655     store.register_late_pass(|| Box::new(derivable_impls::DerivableImpls));
656     store.register_late_pass(|| Box::new(drop_forget_ref::DropForgetRef));
657     store.register_late_pass(|| Box::new(empty_enum::EmptyEnum));
658     store.register_late_pass(|| Box::new(absurd_extreme_comparisons::AbsurdExtremeComparisons));
659     store.register_late_pass(|| Box::new(invalid_upcast_comparisons::InvalidUpcastComparisons));
660     store.register_late_pass(|| Box::new(regex::Regex));
661     store.register_late_pass(|| Box::new(copies::CopyAndPaste));
662     store.register_late_pass(|| Box::new(copy_iterator::CopyIterator));
663     store.register_late_pass(|| Box::new(format::UselessFormat));
664     store.register_late_pass(|| Box::new(swap::Swap));
665     store.register_late_pass(|| Box::new(overflow_check_conditional::OverflowCheckConditional));
666     store.register_late_pass(|| Box::new(new_without_default::NewWithoutDefault::default()));
667     let blacklisted_names = conf.blacklisted_names.iter().cloned().collect::<FxHashSet<_>>();
668     store.register_late_pass(move || Box::new(blacklisted_name::BlacklistedName::new(blacklisted_names.clone())));
669     let too_many_arguments_threshold = conf.too_many_arguments_threshold;
670     let too_many_lines_threshold = conf.too_many_lines_threshold;
671     store.register_late_pass(move || {
672         Box::new(functions::Functions::new(
673             too_many_arguments_threshold,
674             too_many_lines_threshold,
675         ))
676     });
677     let doc_valid_idents = conf.doc_valid_idents.iter().cloned().collect::<FxHashSet<_>>();
678     store.register_late_pass(move || Box::new(doc::DocMarkdown::new(doc_valid_idents.clone())));
679     store.register_late_pass(|| Box::new(neg_multiply::NegMultiply));
680     store.register_late_pass(|| Box::new(mem_forget::MemForget));
681     store.register_late_pass(|| Box::new(numeric_arithmetic::NumericArithmetic::default()));
682     store.register_late_pass(|| Box::new(assign_ops::AssignOps));
683     store.register_late_pass(|| Box::new(let_if_seq::LetIfSeq));
684     store.register_late_pass(|| Box::new(mixed_read_write_in_expression::EvalOrderDependence));
685     store.register_late_pass(|| Box::new(missing_doc::MissingDoc::new()));
686     store.register_late_pass(|| Box::new(missing_inline::MissingInline));
687     store.register_late_pass(move || Box::new(exhaustive_items::ExhaustiveItems));
688     store.register_late_pass(|| Box::new(match_result_ok::MatchResultOk));
689     store.register_late_pass(|| Box::new(partialeq_ne_impl::PartialEqNeImpl));
690     store.register_late_pass(|| Box::new(unused_io_amount::UnusedIoAmount));
691     let enum_variant_size_threshold = conf.enum_variant_size_threshold;
692     store.register_late_pass(move || Box::new(large_enum_variant::LargeEnumVariant::new(enum_variant_size_threshold)));
693     store.register_late_pass(|| Box::new(explicit_write::ExplicitWrite));
694     store.register_late_pass(|| Box::new(needless_pass_by_value::NeedlessPassByValue));
695     let pass_by_ref_or_value = pass_by_ref_or_value::PassByRefOrValue::new(
696         conf.trivial_copy_size_limit,
697         conf.pass_by_value_size_limit,
698         conf.avoid_breaking_exported_api,
699         &sess.target,
700     );
701     store.register_late_pass(move || Box::new(pass_by_ref_or_value));
702     store.register_late_pass(|| Box::new(ref_option_ref::RefOptionRef));
703     store.register_late_pass(|| Box::new(bytecount::ByteCount));
704     store.register_late_pass(|| Box::new(infinite_iter::InfiniteIter));
705     store.register_late_pass(|| Box::new(inline_fn_without_body::InlineFnWithoutBody));
706     store.register_late_pass(|| Box::new(useless_conversion::UselessConversion::default()));
707     store.register_late_pass(|| Box::new(implicit_hasher::ImplicitHasher));
708     store.register_late_pass(|| Box::new(fallible_impl_from::FallibleImplFrom));
709     store.register_late_pass(|| Box::new(double_comparison::DoubleComparisons));
710     store.register_late_pass(|| Box::new(question_mark::QuestionMark));
711     store.register_early_pass(|| Box::new(suspicious_operation_groupings::SuspiciousOperationGroupings));
712     store.register_late_pass(|| Box::new(suspicious_trait_impl::SuspiciousImpl));
713     store.register_late_pass(|| Box::new(map_unit_fn::MapUnit));
714     store.register_late_pass(|| Box::new(inherent_impl::MultipleInherentImpl));
715     store.register_late_pass(|| Box::new(neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd));
716     store.register_late_pass(|| Box::new(unwrap::Unwrap));
717     store.register_late_pass(|| Box::new(duration_subsec::DurationSubsec));
718     store.register_late_pass(|| Box::new(indexing_slicing::IndexingSlicing));
719     store.register_late_pass(|| Box::new(non_copy_const::NonCopyConst));
720     store.register_late_pass(|| Box::new(ptr_offset_with_cast::PtrOffsetWithCast));
721     store.register_late_pass(|| Box::new(redundant_clone::RedundantClone));
722     store.register_late_pass(|| Box::new(slow_vector_initialization::SlowVectorInit));
723     store.register_late_pass(|| Box::new(unnecessary_sort_by::UnnecessarySortBy));
724     store.register_late_pass(move || Box::new(unnecessary_wraps::UnnecessaryWraps::new(avoid_breaking_exported_api)));
725     store.register_late_pass(|| Box::new(assertions_on_constants::AssertionsOnConstants));
726     store.register_late_pass(|| Box::new(transmuting_null::TransmutingNull));
727     store.register_late_pass(|| Box::new(path_buf_push_overwrite::PathBufPushOverwrite));
728     store.register_late_pass(|| Box::new(integer_division::IntegerDivision));
729     store.register_late_pass(|| Box::new(inherent_to_string::InherentToString));
730     let max_trait_bounds = conf.max_trait_bounds;
731     store.register_late_pass(move || Box::new(trait_bounds::TraitBounds::new(max_trait_bounds)));
732     store.register_late_pass(|| Box::new(comparison_chain::ComparisonChain));
733     store.register_late_pass(|| Box::new(mut_key::MutableKeyType));
734     store.register_late_pass(|| Box::new(modulo_arithmetic::ModuloArithmetic));
735     store.register_early_pass(|| Box::new(reference::DerefAddrOf));
736     store.register_early_pass(|| Box::new(double_parens::DoubleParens));
737     store.register_late_pass(|| Box::new(format_impl::FormatImpl::new()));
738     store.register_early_pass(|| Box::new(unsafe_removed_from_name::UnsafeNameRemoval));
739     store.register_early_pass(|| Box::new(else_if_without_else::ElseIfWithoutElse));
740     store.register_early_pass(|| Box::new(int_plus_one::IntPlusOne));
741     store.register_early_pass(|| Box::new(formatting::Formatting));
742     store.register_early_pass(|| Box::new(misc_early::MiscEarlyLints));
743     store.register_early_pass(|| Box::new(redundant_closure_call::RedundantClosureCall));
744     store.register_late_pass(|| Box::new(redundant_closure_call::RedundantClosureCall));
745     store.register_early_pass(|| Box::new(unused_unit::UnusedUnit));
746     store.register_late_pass(|| Box::new(returns::Return));
747     store.register_early_pass(|| Box::new(collapsible_if::CollapsibleIf));
748     store.register_early_pass(|| Box::new(items_after_statements::ItemsAfterStatements));
749     store.register_early_pass(|| Box::new(precedence::Precedence));
750     store.register_late_pass(|| Box::new(needless_parens_on_range_literals::NeedlessParensOnRangeLiterals));
751     store.register_early_pass(|| Box::new(needless_continue::NeedlessContinue));
752     store.register_early_pass(|| Box::new(redundant_else::RedundantElse));
753     store.register_late_pass(|| Box::new(create_dir::CreateDir));
754     store.register_early_pass(|| Box::new(needless_arbitrary_self_type::NeedlessArbitrarySelfType));
755     let literal_representation_lint_fraction_readability = conf.unreadable_literal_lint_fractions;
756     store.register_early_pass(move || {
757         Box::new(literal_representation::LiteralDigitGrouping::new(
758             literal_representation_lint_fraction_readability,
759         ))
760     });
761     let literal_representation_threshold = conf.literal_representation_threshold;
762     store.register_early_pass(move || {
763         Box::new(literal_representation::DecimalLiteralRepresentation::new(
764             literal_representation_threshold,
765         ))
766     });
767     let enum_variant_name_threshold = conf.enum_variant_name_threshold;
768     store.register_late_pass(move || {
769         Box::new(enum_variants::EnumVariantNames::new(
770             enum_variant_name_threshold,
771             avoid_breaking_exported_api,
772         ))
773     });
774     store.register_early_pass(|| Box::new(tabs_in_doc_comments::TabsInDocComments));
775     let upper_case_acronyms_aggressive = conf.upper_case_acronyms_aggressive;
776     store.register_late_pass(move || {
777         Box::new(upper_case_acronyms::UpperCaseAcronyms::new(
778             avoid_breaking_exported_api,
779             upper_case_acronyms_aggressive,
780         ))
781     });
782     store.register_late_pass(|| Box::new(default::Default::default()));
783     store.register_late_pass(|| Box::new(unused_self::UnusedSelf));
784     store.register_late_pass(|| Box::new(mutable_debug_assertion::DebugAssertWithMutCall));
785     store.register_late_pass(|| Box::new(exit::Exit));
786     store.register_late_pass(|| Box::new(to_digit_is_some::ToDigitIsSome));
787     let array_size_threshold = conf.array_size_threshold;
788     store.register_late_pass(move || Box::new(large_stack_arrays::LargeStackArrays::new(array_size_threshold)));
789     store.register_late_pass(move || Box::new(large_const_arrays::LargeConstArrays::new(array_size_threshold)));
790     store.register_late_pass(|| Box::new(floating_point_arithmetic::FloatingPointArithmetic));
791     store.register_early_pass(|| Box::new(as_conversions::AsConversions));
792     store.register_late_pass(|| Box::new(let_underscore::LetUnderscore));
793     store.register_early_pass(|| Box::new(single_component_path_imports::SingleComponentPathImports));
794     let max_fn_params_bools = conf.max_fn_params_bools;
795     let max_struct_bools = conf.max_struct_bools;
796     store.register_early_pass(move || {
797         Box::new(excessive_bools::ExcessiveBools::new(
798             max_struct_bools,
799             max_fn_params_bools,
800         ))
801     });
802     store.register_early_pass(|| Box::new(option_env_unwrap::OptionEnvUnwrap));
803     let warn_on_all_wildcard_imports = conf.warn_on_all_wildcard_imports;
804     store.register_late_pass(move || Box::new(wildcard_imports::WildcardImports::new(warn_on_all_wildcard_imports)));
805     store.register_late_pass(|| Box::new(verbose_file_reads::VerboseFileReads));
806     store.register_late_pass(|| Box::new(redundant_pub_crate::RedundantPubCrate::default()));
807     store.register_late_pass(|| Box::new(unnamed_address::UnnamedAddress));
808     store.register_late_pass(|| Box::new(dereference::Dereferencing::default()));
809     store.register_late_pass(|| Box::new(option_if_let_else::OptionIfLetElse));
810     store.register_late_pass(|| Box::new(future_not_send::FutureNotSend));
811     store.register_late_pass(|| Box::new(if_let_mutex::IfLetMutex));
812     store.register_late_pass(|| Box::new(if_not_else::IfNotElse));
813     store.register_late_pass(|| Box::new(equatable_if_let::PatternEquality));
814     store.register_late_pass(|| Box::new(mut_mutex_lock::MutMutexLock));
815     store.register_late_pass(|| Box::new(manual_async_fn::ManualAsyncFn));
816     store.register_late_pass(|| Box::new(vec_resize_to_zero::VecResizeToZero));
817     store.register_late_pass(|| Box::new(panic_in_result_fn::PanicInResultFn));
818     let single_char_binding_names_threshold = conf.single_char_binding_names_threshold;
819     store.register_early_pass(move || {
820         Box::new(non_expressive_names::NonExpressiveNames {
821             single_char_binding_names_threshold,
822         })
823     });
824     let macro_matcher = conf.standard_macro_braces.iter().cloned().collect::<FxHashSet<_>>();
825     store.register_early_pass(move || Box::new(nonstandard_macro_braces::MacroBraces::new(&macro_matcher)));
826     store.register_late_pass(|| Box::new(macro_use::MacroUseImports::default()));
827     store.register_late_pass(|| Box::new(pattern_type_mismatch::PatternTypeMismatch));
828     store.register_late_pass(|| Box::new(stable_sort_primitive::StableSortPrimitive));
829     store.register_late_pass(|| Box::new(repeat_once::RepeatOnce));
830     store.register_late_pass(|| Box::new(unwrap_in_result::UnwrapInResult));
831     store.register_late_pass(|| Box::new(self_assignment::SelfAssignment));
832     store.register_late_pass(|| Box::new(manual_ok_or::ManualOkOr));
833     store.register_late_pass(|| Box::new(float_equality_without_abs::FloatEqualityWithoutAbs));
834     store.register_late_pass(|| Box::new(semicolon_if_nothing_returned::SemicolonIfNothingReturned));
835     store.register_late_pass(|| Box::new(async_yields_async::AsyncYieldsAsync));
836     let disallowed_methods = conf.disallowed_methods.clone();
837     store.register_late_pass(move || Box::new(disallowed_methods::DisallowedMethods::new(disallowed_methods.clone())));
838     store.register_early_pass(|| Box::new(asm_syntax::InlineAsmX86AttSyntax));
839     store.register_early_pass(|| Box::new(asm_syntax::InlineAsmX86IntelSyntax));
840     store.register_late_pass(|| Box::new(empty_drop::EmptyDrop));
841     store.register_late_pass(|| Box::new(strings::StrToString));
842     store.register_late_pass(|| Box::new(strings::StringToString));
843     store.register_late_pass(|| Box::new(zero_sized_map_values::ZeroSizedMapValues));
844     store.register_late_pass(|| Box::new(vec_init_then_push::VecInitThenPush::default()));
845     store.register_late_pass(|| {
846         Box::new(case_sensitive_file_extension_comparisons::CaseSensitiveFileExtensionComparisons)
847     });
848     store.register_late_pass(|| Box::new(redundant_slicing::RedundantSlicing));
849     store.register_late_pass(|| Box::new(from_str_radix_10::FromStrRadix10));
850     store.register_late_pass(move || Box::new(if_then_some_else_none::IfThenSomeElseNone::new(msrv)));
851     store.register_late_pass(|| Box::new(bool_assert_comparison::BoolAssertComparison));
852     store.register_early_pass(move || Box::new(module_style::ModStyle));
853     store.register_late_pass(|| Box::new(unused_async::UnusedAsync));
854     let disallowed_types = conf.disallowed_types.clone();
855     store.register_late_pass(move || Box::new(disallowed_types::DisallowedTypes::new(disallowed_types.clone())));
856     let import_renames = conf.enforced_import_renames.clone();
857     store.register_late_pass(move || {
858         Box::new(missing_enforced_import_rename::ImportRename::new(
859             import_renames.clone(),
860         ))
861     });
862     let scripts = conf.allowed_scripts.clone();
863     store.register_early_pass(move || Box::new(disallowed_script_idents::DisallowedScriptIdents::new(&scripts)));
864     store.register_late_pass(|| Box::new(strlen_on_c_strings::StrlenOnCStrings));
865     store.register_late_pass(move || Box::new(self_named_constructors::SelfNamedConstructors));
866     store.register_late_pass(move || Box::new(iter_not_returning_iterator::IterNotReturningIterator));
867     store.register_late_pass(move || Box::new(manual_assert::ManualAssert));
868     let enable_raw_pointer_heuristic_for_send = conf.enable_raw_pointer_heuristic_for_send;
869     store.register_late_pass(move || {
870         Box::new(non_send_fields_in_send_ty::NonSendFieldInSendTy::new(
871             enable_raw_pointer_heuristic_for_send,
872         ))
873     });
874     store.register_late_pass(move || Box::new(undocumented_unsafe_blocks::UndocumentedUnsafeBlocks));
875     store.register_late_pass(move || Box::new(format_args::FormatArgs));
876     store.register_late_pass(|| Box::new(trailing_empty_array::TrailingEmptyArray));
877     store.register_early_pass(|| Box::new(octal_escapes::OctalEscapes));
878     store.register_late_pass(|| Box::new(needless_late_init::NeedlessLateInit));
879     store.register_late_pass(|| Box::new(return_self_not_must_use::ReturnSelfNotMustUse));
880     store.register_late_pass(|| Box::new(init_numbered_fields::NumberedFields));
881     store.register_early_pass(|| Box::new(single_char_lifetime_names::SingleCharLifetimeNames));
882     store.register_late_pass(move || Box::new(borrow_as_ptr::BorrowAsPtr::new(msrv)));
883     store.register_late_pass(move || Box::new(manual_bits::ManualBits::new(msrv)));
884     store.register_late_pass(|| Box::new(default_union_representation::DefaultUnionRepresentation));
885     store.register_early_pass(|| Box::new(doc_link_with_quotes::DocLinkWithQuotes));
886     store.register_late_pass(|| Box::new(only_used_in_recursion::OnlyUsedInRecursion));
887     let allow_dbg_in_tests = conf.allow_dbg_in_tests;
888     store.register_late_pass(move || Box::new(dbg_macro::DbgMacro::new(allow_dbg_in_tests)));
889     let cargo_ignore_publish = conf.cargo_ignore_publish;
890     store.register_late_pass(move || {
891         Box::new(cargo::Cargo {
892             ignore_publish: cargo_ignore_publish,
893         })
894     });
895     store.register_early_pass(|| Box::new(crate_in_macro_def::CrateInMacroDef));
896     store.register_early_pass(|| Box::new(empty_structs_with_brackets::EmptyStructsWithBrackets));
897     store.register_late_pass(|| Box::new(unnecessary_owned_empty_strings::UnnecessaryOwnedEmptyStrings));
898     store.register_early_pass(|| Box::new(pub_use::PubUse));
899     store.register_late_pass(|| Box::new(format_push_string::FormatPushString));
900     store.register_late_pass(|| Box::new(bytes_count_to_len::BytesCountToLen));
901     let max_include_file_size = conf.max_include_file_size;
902     store.register_late_pass(move || Box::new(large_include_file::LargeIncludeFile::new(max_include_file_size)));
903     store.register_late_pass(|| Box::new(strings::TrimSplitWhitespace));
904     store.register_late_pass(|| Box::new(rc_clone_in_vec_init::RcCloneInVecInit));
905     store.register_early_pass(|| Box::new(duplicate_mod::DuplicateMod::default()));
906     store.register_late_pass(|| Box::new(get_first::GetFirst));
907     store.register_early_pass(|| Box::new(unused_rounding::UnusedRounding));
908     store.register_early_pass(move || Box::new(almost_complete_letter_range::AlmostCompleteLetterRange::new(msrv)));
909     store.register_late_pass(|| Box::new(swap_ptr_to_ref::SwapPtrToRef));
910     store.register_late_pass(|| Box::new(mismatching_type_param_order::TypeParamMismatch));
911     store.register_late_pass(|| Box::new(as_underscore::AsUnderscore));
912     store.register_late_pass(|| Box::new(read_zero_byte_vec::ReadZeroByteVec));
913     // add lints here, do not remove this comment, it's used in `new_lint`
914 }
915
916 #[rustfmt::skip]
917 fn register_removed_non_tool_lints(store: &mut rustc_lint::LintStore) {
918     store.register_removed(
919         "should_assert_eq",
920         "`assert!()` will be more flexible with RFC 2011",
921     );
922     store.register_removed(
923         "extend_from_slice",
924         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
925     );
926     store.register_removed(
927         "range_step_by_zero",
928         "`iterator.step_by(0)` panics nowadays",
929     );
930     store.register_removed(
931         "unstable_as_slice",
932         "`Vec::as_slice` has been stabilized in 1.7",
933     );
934     store.register_removed(
935         "unstable_as_mut_slice",
936         "`Vec::as_mut_slice` has been stabilized in 1.7",
937     );
938     store.register_removed(
939         "misaligned_transmute",
940         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
941     );
942     store.register_removed(
943         "assign_ops",
944         "using compound assignment operators (e.g., `+=`) is harmless",
945     );
946     store.register_removed(
947         "if_let_redundant_pattern_matching",
948         "this lint has been changed to redundant_pattern_matching",
949     );
950     store.register_removed(
951         "unsafe_vector_initialization",
952         "the replacement suggested by this lint had substantially different behavior",
953     );
954     store.register_removed(
955         "reverse_range_loop",
956         "this lint is now included in reversed_empty_ranges",
957     );
958 }
959
960 /// Register renamed lints.
961 ///
962 /// Used in `./src/driver.rs`.
963 pub fn register_renamed(ls: &mut rustc_lint::LintStore) {
964     for (old_name, new_name) in renamed_lints::RENAMED_LINTS {
965         ls.register_renamed(old_name, new_name);
966     }
967 }
968
969 // only exists to let the dogfood integration test works.
970 // Don't run clippy as an executable directly
971 #[allow(dead_code)]
972 fn main() {
973     panic!("Please use the cargo-clippy executable");
974 }