clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(box_patterns)]
   5 #![feature(never_type)]
   6 #![feature(rustc_private)]
   7 #![feature(slice_patterns)]
   8 #![feature(stmt_expr_attributes)]
   9 #![allow(clippy::missing_docs_in_private_items)]
  10 #![recursion_limit = "512"]
  11 #![warn(rust_2018_idioms, trivial_casts, trivial_numeric_casts)]
  12 #![deny(rustc::internal)]
  13 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
  14 #![feature(crate_visibility_modifier)]
  15 #![feature(concat_idents)]
  16
  17 // FIXME: switch to something more ergonomic here, once available.
  18 // (Currently there is no way to opt into sysroot crates without `extern crate`.)
  19 #[allow(unused_extern_crates)]
  20 extern crate fmt_macros;
  21 #[allow(unused_extern_crates)]
  22 extern crate rustc;
  23 #[allow(unused_extern_crates)]
  24 extern crate rustc_data_structures;
  25 #[allow(unused_extern_crates)]
  26 extern crate rustc_driver;
  27 #[allow(unused_extern_crates)]
  28 extern crate rustc_errors;
  29 #[allow(unused_extern_crates)]
  30 extern crate rustc_mir;
  31 #[allow(unused_extern_crates)]
  32 extern crate rustc_target;
  33 #[allow(unused_extern_crates)]
  34 extern crate rustc_typeck;
  35 #[allow(unused_extern_crates)]
  36 extern crate syntax;
  37 #[allow(unused_extern_crates)]
  38 extern crate syntax_pos;
  39
  40 use toml;
  41
  42 /// Macro used to declare a Clippy lint.
  43 ///
  44 /// Every lint declaration consists of 4 parts:
  45 ///
  46 /// 1. The documentation, which is used for the website
  47 /// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
  48 /// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
  49 ///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
  50 /// 4. The `description` that contains a short explanation on what's wrong with code where the
  51 ///    lint is triggered.
  52 ///
  53 /// Currently the categories `style`, `correctness`, `complexity` and `perf` are enabled by default.
  54 /// As said in the README.md of this repository, if the lint level mapping changes, please update
  55 /// README.md.
  56 ///
  57 /// # Example
  58 ///
  59 /// ```
  60 /// # #![feature(rustc_private)]
  61 /// # #[allow(unused_extern_crates)]
  62 /// # extern crate rustc;
  63 /// # #[macro_use]
  64 /// # use clippy_lints::declare_clippy_lint;
  65 /// use rustc::declare_tool_lint;
  66 ///
  67 /// declare_clippy_lint! {
  68 ///     /// **What it does:** Checks for ... (describe what the lint matches).
  69 ///     ///
  70 ///     /// **Why is this bad?** Supply the reason for linting the code.
  71 ///     ///
  72 ///     /// **Known problems:** None. (Or describe where it could go wrong.)
  73 ///     ///
  74 ///     /// **Example:**
  75 ///     ///
  76 ///     /// ```rust
  77 ///     /// // Bad
  78 ///     /// Insert a short example of code that triggers the lint
  79 ///     ///
  80 ///     /// // Good
  81 ///     /// Insert a short example of improved code that doesn't trigger the lint
  82 ///     /// ```
  83 ///     pub LINT_NAME,
  84 ///     pedantic,
  85 ///     "description"
  86 /// }
  87 /// ```
  88 /// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
  89 #[macro_export]
  90 macro_rules! declare_clippy_lint {
  91     { $(#[$attr:meta])* pub $name:tt, style, $description:tt } => {
  92         declare_tool_lint! {
  93             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
  94         }
  95     };
  96     { $(#[$attr:meta])* pub $name:tt, correctness, $description:tt } => {
  97         declare_tool_lint! {
  98             $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
  99         }
 100     };
 101     { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
 102         declare_tool_lint! {
 103             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 104         }
 105     };
 106     { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
 107         declare_tool_lint! {
 108             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 109         }
 110     };
 111     { $(#[$attr:meta])* pub $name:tt, pedantic, $description:tt } => {
 112         declare_tool_lint! {
 113             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 114         }
 115     };
 116     { $(#[$attr:meta])* pub $name:tt, restriction, $description:tt } => {
 117         declare_tool_lint! {
 118             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 119         }
 120     };
 121     { $(#[$attr:meta])* pub $name:tt, cargo, $description:tt } => {
 122         declare_tool_lint! {
 123             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 124         }
 125     };
 126     { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
 127         declare_tool_lint! {
 128             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 129         }
 130     };
 131     { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
 132         declare_tool_lint! {
 133             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 134         }
 135     };
 136     { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
 137         declare_tool_lint! {
 138             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 139         }
 140     };
 141 }
 142
 143 mod consts;
 144 #[macro_use]
 145 mod utils;
 146
 147 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 148 pub mod approx_const;
 149 pub mod arithmetic;
 150 pub mod assertions_on_constants;
 151 pub mod assign_ops;
 152 pub mod attrs;
 153 pub mod bit_mask;
 154 pub mod blacklisted_name;
 155 pub mod block_in_if_condition;
 156 pub mod booleans;
 157 pub mod bytecount;
 158 pub mod cargo_common_metadata;
 159 pub mod checked_conversions;
 160 pub mod cognitive_complexity;
 161 pub mod collapsible_if;
 162 pub mod copies;
 163 pub mod copy_iterator;
 164 pub mod dbg_macro;
 165 pub mod default_trait_access;
 166 pub mod derive;
 167 pub mod doc;
 168 pub mod double_comparison;
 169 pub mod double_parens;
 170 pub mod drop_bounds;
 171 pub mod drop_forget_ref;
 172 pub mod duration_subsec;
 173 pub mod else_if_without_else;
 174 pub mod empty_enum;
 175 pub mod entry;
 176 pub mod enum_clike;
 177 pub mod enum_glob_use;
 178 pub mod enum_variants;
 179 pub mod eq_op;
 180 pub mod erasing_op;
 181 pub mod escape;
 182 pub mod eta_reduction;
 183 pub mod eval_order_dependence;
 184 pub mod excessive_precision;
 185 pub mod explicit_write;
 186 pub mod fallible_impl_from;
 187 pub mod format;
 188 pub mod formatting;
 189 pub mod functions;
 190 pub mod get_last_with_len;
 191 pub mod identity_conversion;
 192 pub mod identity_op;
 193 pub mod if_not_else;
 194 pub mod implicit_return;
 195 pub mod indexing_slicing;
 196 pub mod infallible_destructuring_match;
 197 pub mod infinite_iter;
 198 pub mod inherent_impl;
 199 pub mod inherent_to_string;
 200 pub mod inline_fn_without_body;
 201 pub mod int_plus_one;
 202 pub mod integer_division;
 203 pub mod items_after_statements;
 204 pub mod large_enum_variant;
 205 pub mod len_zero;
 206 pub mod let_if_seq;
 207 pub mod lifetimes;
 208 pub mod literal_representation;
 209 pub mod loops;
 210 pub mod main_recursion;
 211 pub mod map_clone;
 212 pub mod map_unit_fn;
 213 pub mod matches;
 214 pub mod mem_discriminant;
 215 pub mod mem_forget;
 216 pub mod mem_replace;
 217 pub mod methods;
 218 pub mod minmax;
 219 pub mod misc;
 220 pub mod misc_early;
 221 pub mod missing_const_for_fn;
 222 pub mod missing_doc;
 223 pub mod missing_inline;
 224 pub mod multiple_crate_versions;
 225 pub mod mut_mut;
 226 pub mod mut_reference;
 227 pub mod mutex_atomic;
 228 pub mod needless_bool;
 229 pub mod needless_borrow;
 230 pub mod needless_borrowed_ref;
 231 pub mod needless_continue;
 232 pub mod needless_pass_by_value;
 233 pub mod needless_update;
 234 pub mod neg_cmp_op_on_partial_ord;
 235 pub mod neg_multiply;
 236 pub mod new_without_default;
 237 pub mod no_effect;
 238 pub mod non_copy_const;
 239 pub mod non_expressive_names;
 240 pub mod ok_if_let;
 241 pub mod open_options;
 242 pub mod overflow_check_conditional;
 243 pub mod panic_unimplemented;
 244 pub mod partialeq_ne_impl;
 245 pub mod path_buf_push_overwrite;
 246 pub mod precedence;
 247 pub mod ptr;
 248 pub mod ptr_offset_with_cast;
 249 pub mod question_mark;
 250 pub mod ranges;
 251 pub mod redundant_clone;
 252 pub mod redundant_field_names;
 253 pub mod redundant_pattern_matching;
 254 pub mod redundant_static_lifetimes;
 255 pub mod reference;
 256 pub mod regex;
 257 pub mod replace_consts;
 258 pub mod returns;
 259 pub mod serde_api;
 260 pub mod shadow;
 261 pub mod slow_vector_initialization;
 262 pub mod strings;
 263 pub mod suspicious_trait_impl;
 264 pub mod swap;
 265 pub mod temporary_assignment;
 266 pub mod trait_bounds;
 267 pub mod transmute;
 268 pub mod transmuting_null;
 269 pub mod trivially_copy_pass_by_ref;
 270 pub mod try_err;
 271 pub mod types;
 272 pub mod unicode;
 273 pub mod unsafe_removed_from_name;
 274 pub mod unused_io_amount;
 275 pub mod unused_label;
 276 pub mod unwrap;
 277 pub mod use_self;
 278 pub mod vec;
 279 pub mod wildcard_dependencies;
 280 pub mod write;
 281 pub mod zero_div_zero;
 282 // end lints modules, do not remove this comment, it’s used in `update_lints`
 283
 284 pub use crate::utils::conf::Conf;
 285
 286 mod reexport {
 287     crate use syntax::ast::Name;
 288 }
 289
 290 /// Register all pre expansion lints
 291 ///
 292 /// Pre-expansion lints run before any macro expansion has happened.
 293 ///
 294 /// Note that due to the architecture of the compiler, currently `cfg_attr` attributes on crate
 295 /// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass.
 296 ///
 297 /// Used in `./src/driver.rs`.
 298 pub fn register_pre_expansion_lints(
 299     session: &rustc::session::Session,
 300     store: &mut rustc::lint::LintStore,
 301     conf: &Conf,
 302 ) {
 303     store.register_pre_expansion_pass(Some(session), true, false, box write::Write);
 304     store.register_pre_expansion_pass(
 305         Some(session),
 306         true,
 307         false,
 308         box redundant_field_names::RedundantFieldNames,
 309     );
 310     store.register_pre_expansion_pass(
 311         Some(session),
 312         true,
 313         false,
 314         box non_expressive_names::NonExpressiveNames {
 315             single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 316         },
 317     );
 318     store.register_pre_expansion_pass(Some(session), true, false, box attrs::DeprecatedCfgAttribute);
 319     store.register_pre_expansion_pass(Some(session), true, false, box dbg_macro::DbgMacro);
 320 }
 321
 322 #[doc(hidden)]
 323 pub fn read_conf(reg: &rustc_driver::plugin::Registry<'_>) -> Conf {
 324     match utils::conf::file_from_args(reg.args()) {
 325         Ok(file_name) => {
 326             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 327             // do not require the file to exist
 328             let file_name = if let Some(file_name) = file_name {
 329                 Some(file_name)
 330             } else {
 331                 match utils::conf::lookup_conf_file() {
 332                     Ok(path) => path,
 333                     Err(error) => {
 334                         reg.sess
 335                             .struct_err(&format!("error finding Clippy's configuration file: {}", error))
 336                             .emit();
 337                         None
 338                     },
 339                 }
 340             };
 341
 342             let file_name = file_name.map(|file_name| {
 343                 if file_name.is_relative() {
 344                     reg.sess
 345                         .local_crate_source_file
 346                         .as_ref()
 347                         .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 348                         .unwrap_or_default()
 349                         .join(file_name)
 350                 } else {
 351                     file_name
 352                 }
 353             });
 354
 355             let (conf, errors) = utils::conf::read(file_name.as_ref().map(std::convert::AsRef::as_ref));
 356
 357             // all conf errors are non-fatal, we just use the default conf in case of error
 358             for error in errors {
 359                 reg.sess
 360                     .struct_err(&format!(
 361                         "error reading Clippy's configuration file `{}`: {}",
 362                         file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""),
 363                         error
 364                     ))
 365                     .emit();
 366             }
 367
 368             conf
 369         },
 370         Err((err, span)) => {
 371             reg.sess
 372                 .struct_span_err(span, err)
 373                 .span_note(span, "Clippy will use default configuration")
 374                 .emit();
 375             toml::from_str("").expect("we never error on empty config files")
 376         },
 377     }
 378 }
 379
 380 /// Register all lints and lint groups with the rustc plugin registry
 381 ///
 382 /// Used in `./src/driver.rs`.
 383 #[allow(clippy::too_many_lines)]
 384 #[rustfmt::skip]
 385 pub fn register_plugins(reg: &mut rustc_driver::plugin::Registry<'_>, conf: &Conf) {
 386     let mut store = reg.sess.lint_store.borrow_mut();
 387     register_removed_non_tool_lints(&mut store);
 388
 389     // begin deprecated lints, do not remove this comment, it’s used in `update_lints`
 390     store.register_removed(
 391         "clippy::should_assert_eq",
 392         "`assert!()` will be more flexible with RFC 2011",
 393     );
 394     store.register_removed(
 395         "clippy::extend_from_slice",
 396         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 397     );
 398     store.register_removed(
 399         "clippy::range_step_by_zero",
 400         "`iterator.step_by(0)` panics nowadays",
 401     );
 402     store.register_removed(
 403         "clippy::unstable_as_slice",
 404         "`Vec::as_slice` has been stabilized in 1.7",
 405     );
 406     store.register_removed(
 407         "clippy::unstable_as_mut_slice",
 408         "`Vec::as_mut_slice` has been stabilized in 1.7",
 409     );
 410     store.register_removed(
 411         "clippy::str_to_string",
 412         "using `str::to_string` is common even today and specialization will likely happen soon",
 413     );
 414     store.register_removed(
 415         "clippy::string_to_string",
 416         "using `string::to_string` is common even today and specialization will likely happen soon",
 417     );
 418     store.register_removed(
 419         "clippy::misaligned_transmute",
 420         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 421     );
 422     store.register_removed(
 423         "clippy::assign_ops",
 424         "using compound assignment operators (e.g., `+=`) is harmless",
 425     );
 426     store.register_removed(
 427         "clippy::if_let_redundant_pattern_matching",
 428         "this lint has been changed to redundant_pattern_matching",
 429     );
 430     store.register_removed(
 431         "clippy::unsafe_vector_initialization",
 432         "the replacement suggested by this lint had substantially different behavior",
 433     );
 434     store.register_removed(
 435         "clippy::invalid_ref",
 436         "superseded by rustc lint `invalid_value`",
 437     );
 438     store.register_removed(
 439         "clippy::unused_collect",
 440         "`collect` has been marked as #[must_use] in rustc and that covers all cases of this lint",
 441     );
 442     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 443
 444     reg.register_late_lint_pass(box serde_api::SerdeAPI);
 445     reg.register_early_lint_pass(box utils::internal_lints::ClippyLintsInternal);
 446     reg.register_late_lint_pass(box utils::internal_lints::CompilerLintFunctions::new());
 447     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 448     reg.register_late_lint_pass(box utils::internal_lints::OuterExpnDataPass);
 449     reg.register_late_lint_pass(box utils::inspector::DeepCodeInspector);
 450     reg.register_late_lint_pass(box utils::author::Author);
 451     reg.register_late_lint_pass(box types::Types);
 452     reg.register_late_lint_pass(box booleans::NonminimalBool);
 453     reg.register_late_lint_pass(box eq_op::EqOp);
 454     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 455     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 456     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 457     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 458     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 459     reg.register_late_lint_pass(box ptr::Ptr);
 460     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 461     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 462     reg.register_late_lint_pass(box approx_const::ApproxConstant);
 463     reg.register_late_lint_pass(box misc::MiscLints);
 464     reg.register_early_lint_pass(box precedence::Precedence);
 465     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 466     reg.register_late_lint_pass(box eta_reduction::EtaReduction);
 467     reg.register_late_lint_pass(box identity_op::IdentityOp);
 468     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 469     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 470     reg.register_late_lint_pass(box mut_mut::MutMut);
 471     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 472     reg.register_late_lint_pass(box len_zero::LenZero);
 473     reg.register_late_lint_pass(box attrs::Attributes);
 474     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 475     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 476     reg.register_late_lint_pass(box unicode::Unicode);
 477     reg.register_late_lint_pass(box strings::StringAdd);
 478     reg.register_early_lint_pass(box returns::Return);
 479     reg.register_late_lint_pass(box implicit_return::ImplicitReturn);
 480     reg.register_late_lint_pass(box methods::Methods);
 481     reg.register_late_lint_pass(box map_clone::MapClone);
 482     reg.register_late_lint_pass(box shadow::Shadow);
 483     reg.register_late_lint_pass(box types::LetUnitValue);
 484     reg.register_late_lint_pass(box types::UnitCmp);
 485     reg.register_late_lint_pass(box loops::Loops);
 486     reg.register_late_lint_pass(box main_recursion::MainRecursion::default());
 487     reg.register_late_lint_pass(box lifetimes::Lifetimes);
 488     reg.register_late_lint_pass(box entry::HashMapPass);
 489     reg.register_late_lint_pass(box ranges::Ranges);
 490     reg.register_late_lint_pass(box types::Casts);
 491     reg.register_late_lint_pass(box types::TypeComplexity::new(conf.type_complexity_threshold));
 492     reg.register_late_lint_pass(box matches::Matches);
 493     reg.register_late_lint_pass(box minmax::MinMaxPass);
 494     reg.register_late_lint_pass(box open_options::OpenOptions);
 495     reg.register_late_lint_pass(box zero_div_zero::ZeroDiv);
 496     reg.register_late_lint_pass(box mutex_atomic::Mutex);
 497     reg.register_late_lint_pass(box needless_update::NeedlessUpdate);
 498     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow::default());
 499     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 500     reg.register_late_lint_pass(box no_effect::NoEffect);
 501     reg.register_late_lint_pass(box temporary_assignment::TemporaryAssignment);
 502     reg.register_late_lint_pass(box transmute::Transmute);
 503     reg.register_late_lint_pass(
 504         box cognitive_complexity::CognitiveComplexity::new(conf.cognitive_complexity_threshold)
 505     );
 506     reg.register_late_lint_pass(box escape::BoxedLocal{too_large_for_stack: conf.too_large_for_stack});
 507     reg.register_early_lint_pass(box misc_early::MiscEarlyLints);
 508     reg.register_late_lint_pass(box panic_unimplemented::PanicUnimplemented);
 509     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 510     reg.register_late_lint_pass(box derive::Derive);
 511     reg.register_late_lint_pass(box types::CharLitAsU8);
 512     reg.register_late_lint_pass(box vec::UselessVec);
 513     reg.register_late_lint_pass(box drop_bounds::DropBounds);
 514     reg.register_late_lint_pass(box get_last_with_len::GetLastWithLen);
 515     reg.register_late_lint_pass(box drop_forget_ref::DropForgetRef);
 516     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 517     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 518     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 519     reg.register_late_lint_pass(box regex::Regex::default());
 520     reg.register_late_lint_pass(box copies::CopyAndPaste);
 521     reg.register_late_lint_pass(box copy_iterator::CopyIterator);
 522     reg.register_late_lint_pass(box format::UselessFormat);
 523     reg.register_early_lint_pass(box formatting::Formatting);
 524     reg.register_late_lint_pass(box swap::Swap);
 525     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 526     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 527     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 528     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 529     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 530     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault::default());
 531     reg.register_late_lint_pass(box blacklisted_name::BlacklistedName::new(
 532             conf.blacklisted_names.iter().cloned().collect()
 533     ));
 534     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold, conf.too_many_lines_threshold));
 535     reg.register_early_lint_pass(box doc::DocMarkdown::new(conf.doc_valid_idents.iter().cloned().collect()));
 536     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 537     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 538     reg.register_late_lint_pass(box mem_discriminant::MemDiscriminant);
 539     reg.register_late_lint_pass(box mem_forget::MemForget);
 540     reg.register_late_lint_pass(box mem_replace::MemReplace);
 541     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 542     reg.register_late_lint_pass(box assign_ops::AssignOps);
 543     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 544     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 545     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 546     reg.register_late_lint_pass(box missing_inline::MissingInline);
 547     reg.register_late_lint_pass(box ok_if_let::OkIfLet);
 548     reg.register_late_lint_pass(box redundant_pattern_matching::RedundantPatternMatching);
 549     reg.register_late_lint_pass(box partialeq_ne_impl::PartialEqNeImpl);
 550     reg.register_early_lint_pass(box reference::DerefAddrOf);
 551     reg.register_early_lint_pass(box reference::RefInDeref);
 552     reg.register_early_lint_pass(box double_parens::DoubleParens);
 553     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 554     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 555     reg.register_late_lint_pass(box explicit_write::ExplicitWrite);
 556     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 557     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 558             conf.trivial_copy_size_limit,
 559             &reg.sess.target,
 560     ));
 561     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 562     reg.register_early_lint_pass(box literal_representation::DecimalLiteralRepresentation::new(
 563             conf.literal_representation_threshold
 564     ));
 565     reg.register_late_lint_pass(box try_err::TryErr);
 566     reg.register_late_lint_pass(box use_self::UseSelf);
 567     reg.register_late_lint_pass(box bytecount::ByteCount);
 568     reg.register_late_lint_pass(box infinite_iter::InfiniteIter);
 569     reg.register_late_lint_pass(box inline_fn_without_body::InlineFnWithoutBody);
 570     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 571     reg.register_late_lint_pass(box types::ImplicitHasher);
 572     reg.register_early_lint_pass(box redundant_static_lifetimes::RedundantStaticLifetimes);
 573     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 574     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 575     reg.register_late_lint_pass(box types::UnitArg);
 576     reg.register_late_lint_pass(box double_comparison::DoubleComparisons);
 577     reg.register_late_lint_pass(box question_mark::QuestionMark);
 578     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 579     reg.register_early_lint_pass(box cargo_common_metadata::CargoCommonMetadata);
 580     reg.register_early_lint_pass(box multiple_crate_versions::MultipleCrateVersions);
 581     reg.register_early_lint_pass(box wildcard_dependencies::WildcardDependencies);
 582     reg.register_late_lint_pass(box map_unit_fn::MapUnit);
 583     reg.register_late_lint_pass(box infallible_destructuring_match::InfallibleDestructingMatch);
 584     reg.register_late_lint_pass(box inherent_impl::MultipleInherentImpl::default());
 585     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 586     reg.register_late_lint_pass(box unwrap::Unwrap);
 587     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 588     reg.register_late_lint_pass(box default_trait_access::DefaultTraitAccess);
 589     reg.register_late_lint_pass(box indexing_slicing::IndexingSlicing);
 590     reg.register_late_lint_pass(box non_copy_const::NonCopyConst);
 591     reg.register_late_lint_pass(box ptr_offset_with_cast::PtrOffsetWithCast);
 592     reg.register_late_lint_pass(box redundant_clone::RedundantClone);
 593     reg.register_late_lint_pass(box slow_vector_initialization::SlowVectorInit);
 594     reg.register_late_lint_pass(box types::RefToMut);
 595     reg.register_late_lint_pass(box assertions_on_constants::AssertionsOnConstants);
 596     reg.register_late_lint_pass(box missing_const_for_fn::MissingConstForFn);
 597     reg.register_late_lint_pass(box transmuting_null::TransmutingNull);
 598     reg.register_late_lint_pass(box path_buf_push_overwrite::PathBufPushOverwrite);
 599     reg.register_late_lint_pass(box checked_conversions::CheckedConversions);
 600     reg.register_late_lint_pass(box integer_division::IntegerDivision);
 601     reg.register_late_lint_pass(box inherent_to_string::InherentToString);
 602     reg.register_late_lint_pass(box trait_bounds::TraitBounds);
 603
 604     reg.register_lint_group("clippy::restriction", Some("clippy_restriction"), vec![
 605         arithmetic::FLOAT_ARITHMETIC,
 606         arithmetic::INTEGER_ARITHMETIC,
 607         dbg_macro::DBG_MACRO,
 608         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 609         implicit_return::IMPLICIT_RETURN,
 610         indexing_slicing::INDEXING_SLICING,
 611         inherent_impl::MULTIPLE_INHERENT_IMPL,
 612         integer_division::INTEGER_DIVISION,
 613         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 614         matches::WILDCARD_ENUM_MATCH_ARM,
 615         mem_forget::MEM_FORGET,
 616         methods::CLONE_ON_REF_PTR,
 617         methods::GET_UNWRAP,
 618         methods::OPTION_UNWRAP_USED,
 619         methods::RESULT_UNWRAP_USED,
 620         methods::WRONG_PUB_SELF_CONVENTION,
 621         misc::FLOAT_CMP_CONST,
 622         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 623         missing_inline::MISSING_INLINE_IN_PUBLIC_ITEMS,
 624         panic_unimplemented::UNIMPLEMENTED,
 625         shadow::SHADOW_REUSE,
 626         shadow::SHADOW_SAME,
 627         strings::STRING_ADD,
 628         write::PRINT_STDOUT,
 629         write::USE_DEBUG,
 630     ]);
 631
 632     reg.register_lint_group("clippy::pedantic", Some("clippy_pedantic"), vec![
 633         attrs::INLINE_ALWAYS,
 634         checked_conversions::CHECKED_CONVERSIONS,
 635         copies::MATCH_SAME_ARMS,
 636         copy_iterator::COPY_ITERATOR,
 637         default_trait_access::DEFAULT_TRAIT_ACCESS,
 638         derive::EXPL_IMPL_CLONE_ON_COPY,
 639         doc::DOC_MARKDOWN,
 640         empty_enum::EMPTY_ENUM,
 641         enum_glob_use::ENUM_GLOB_USE,
 642         enum_variants::MODULE_NAME_REPETITIONS,
 643         enum_variants::PUB_ENUM_VARIANT_NAMES,
 644         eta_reduction::REDUNDANT_CLOSURE_FOR_METHOD_CALLS,
 645         functions::TOO_MANY_LINES,
 646         if_not_else::IF_NOT_ELSE,
 647         infinite_iter::MAYBE_INFINITE_ITER,
 648         items_after_statements::ITEMS_AFTER_STATEMENTS,
 649         literal_representation::LARGE_DIGIT_GROUPS,
 650         loops::EXPLICIT_INTO_ITER_LOOP,
 651         loops::EXPLICIT_ITER_LOOP,
 652         matches::SINGLE_MATCH_ELSE,
 653         methods::FILTER_MAP,
 654         methods::FILTER_MAP_NEXT,
 655         methods::FIND_MAP,
 656         methods::MAP_FLATTEN,
 657         methods::OPTION_MAP_UNWRAP_OR,
 658         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 659         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 660         misc::USED_UNDERSCORE_BINDING,
 661         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 662         mut_mut::MUT_MUT,
 663         needless_continue::NEEDLESS_CONTINUE,
 664         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 665         non_expressive_names::SIMILAR_NAMES,
 666         replace_consts::REPLACE_CONSTS,
 667         shadow::SHADOW_UNRELATED,
 668         strings::STRING_ADD_ASSIGN,
 669         trait_bounds::TYPE_REPETITION_IN_BOUNDS,
 670         types::CAST_POSSIBLE_TRUNCATION,
 671         types::CAST_POSSIBLE_WRAP,
 672         types::CAST_PRECISION_LOSS,
 673         types::CAST_SIGN_LOSS,
 674         types::INVALID_UPCAST_COMPARISONS,
 675         types::LINKEDLIST,
 676         unicode::NON_ASCII_LITERAL,
 677         unicode::UNICODE_NOT_NFC,
 678         use_self::USE_SELF,
 679     ]);
 680
 681     reg.register_lint_group("clippy::internal", Some("clippy_internal"), vec![
 682         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 683         utils::internal_lints::COMPILER_LINT_FUNCTIONS,
 684         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 685         utils::internal_lints::OUTER_EXPN_EXPN_DATA,
 686     ]);
 687
 688     reg.register_lint_group("clippy::all", Some("clippy"), vec![
 689         approx_const::APPROX_CONSTANT,
 690         assertions_on_constants::ASSERTIONS_ON_CONSTANTS,
 691         assign_ops::ASSIGN_OP_PATTERN,
 692         assign_ops::MISREFACTORED_ASSIGN_OP,
 693         attrs::DEPRECATED_CFG_ATTR,
 694         attrs::DEPRECATED_SEMVER,
 695         attrs::UNKNOWN_CLIPPY_LINTS,
 696         attrs::USELESS_ATTRIBUTE,
 697         bit_mask::BAD_BIT_MASK,
 698         bit_mask::INEFFECTIVE_BIT_MASK,
 699         bit_mask::VERBOSE_BIT_MASK,
 700         blacklisted_name::BLACKLISTED_NAME,
 701         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 702         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 703         booleans::LOGIC_BUG,
 704         booleans::NONMINIMAL_BOOL,
 705         bytecount::NAIVE_BYTECOUNT,
 706         cognitive_complexity::COGNITIVE_COMPLEXITY,
 707         collapsible_if::COLLAPSIBLE_IF,
 708         copies::IFS_SAME_COND,
 709         copies::IF_SAME_THEN_ELSE,
 710         derive::DERIVE_HASH_XOR_EQ,
 711         double_comparison::DOUBLE_COMPARISONS,
 712         double_parens::DOUBLE_PARENS,
 713         drop_bounds::DROP_BOUNDS,
 714         drop_forget_ref::DROP_COPY,
 715         drop_forget_ref::DROP_REF,
 716         drop_forget_ref::FORGET_COPY,
 717         drop_forget_ref::FORGET_REF,
 718         duration_subsec::DURATION_SUBSEC,
 719         entry::MAP_ENTRY,
 720         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 721         enum_variants::ENUM_VARIANT_NAMES,
 722         enum_variants::MODULE_INCEPTION,
 723         eq_op::EQ_OP,
 724         eq_op::OP_REF,
 725         erasing_op::ERASING_OP,
 726         escape::BOXED_LOCAL,
 727         eta_reduction::REDUNDANT_CLOSURE,
 728         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 729         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 730         excessive_precision::EXCESSIVE_PRECISION,
 731         explicit_write::EXPLICIT_WRITE,
 732         format::USELESS_FORMAT,
 733         formatting::POSSIBLE_MISSING_COMMA,
 734         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 735         formatting::SUSPICIOUS_ELSE_FORMATTING,
 736         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 737         functions::TOO_MANY_ARGUMENTS,
 738         get_last_with_len::GET_LAST_WITH_LEN,
 739         identity_conversion::IDENTITY_CONVERSION,
 740         identity_op::IDENTITY_OP,
 741         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 742         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 743         infinite_iter::INFINITE_ITER,
 744         inherent_to_string::INHERENT_TO_STRING,
 745         inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY,
 746         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 747         int_plus_one::INT_PLUS_ONE,
 748         large_enum_variant::LARGE_ENUM_VARIANT,
 749         len_zero::LEN_WITHOUT_IS_EMPTY,
 750         len_zero::LEN_ZERO,
 751         let_if_seq::USELESS_LET_IF_SEQ,
 752         lifetimes::EXTRA_UNUSED_LIFETIMES,
 753         lifetimes::NEEDLESS_LIFETIMES,
 754         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 755         literal_representation::MISTYPED_LITERAL_SUFFIXES,
 756         literal_representation::UNREADABLE_LITERAL,
 757         loops::EMPTY_LOOP,
 758         loops::EXPLICIT_COUNTER_LOOP,
 759         loops::FOR_KV_MAP,
 760         loops::FOR_LOOP_OVER_OPTION,
 761         loops::FOR_LOOP_OVER_RESULT,
 762         loops::ITER_NEXT_LOOP,
 763         loops::MANUAL_MEMCPY,
 764         loops::MUT_RANGE_BOUND,
 765         loops::NEEDLESS_COLLECT,
 766         loops::NEEDLESS_RANGE_LOOP,
 767         loops::NEVER_LOOP,
 768         loops::REVERSE_RANGE_LOOP,
 769         loops::WHILE_IMMUTABLE_CONDITION,
 770         loops::WHILE_LET_LOOP,
 771         loops::WHILE_LET_ON_ITERATOR,
 772         main_recursion::MAIN_RECURSION,
 773         map_clone::MAP_CLONE,
 774         map_unit_fn::OPTION_MAP_UNIT_FN,
 775         map_unit_fn::RESULT_MAP_UNIT_FN,
 776         matches::MATCH_AS_REF,
 777         matches::MATCH_BOOL,
 778         matches::MATCH_OVERLAPPING_ARM,
 779         matches::MATCH_REF_PATS,
 780         matches::MATCH_WILD_ERR_ARM,
 781         matches::SINGLE_MATCH,
 782         mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
 783         mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
 784         methods::CHARS_LAST_CMP,
 785         methods::CHARS_NEXT_CMP,
 786         methods::CLONE_DOUBLE_REF,
 787         methods::CLONE_ON_COPY,
 788         methods::EXPECT_FUN_CALL,
 789         methods::FILTER_NEXT,
 790         methods::FLAT_MAP_IDENTITY,
 791         methods::INTO_ITER_ON_ARRAY,
 792         methods::INTO_ITER_ON_REF,
 793         methods::ITER_CLONED_COLLECT,
 794         methods::ITER_NTH,
 795         methods::ITER_SKIP_NEXT,
 796         methods::MANUAL_SATURATING_ARITHMETIC,
 797         methods::NEW_RET_NO_SELF,
 798         methods::OK_EXPECT,
 799         methods::OPTION_AND_THEN_SOME,
 800         methods::OPTION_MAP_OR_NONE,
 801         methods::OR_FUN_CALL,
 802         methods::SEARCH_IS_SOME,
 803         methods::SHOULD_IMPLEMENT_TRAIT,
 804         methods::SINGLE_CHAR_PATTERN,
 805         methods::STRING_EXTEND_CHARS,
 806         methods::SUSPICIOUS_MAP,
 807         methods::TEMPORARY_CSTRING_AS_PTR,
 808         methods::UNINIT_ASSUMED_INIT,
 809         methods::UNNECESSARY_FILTER_MAP,
 810         methods::UNNECESSARY_FOLD,
 811         methods::USELESS_ASREF,
 812         methods::WRONG_SELF_CONVENTION,
 813         minmax::MIN_MAX,
 814         misc::CMP_NAN,
 815         misc::CMP_OWNED,
 816         misc::FLOAT_CMP,
 817         misc::MODULO_ONE,
 818         misc::SHORT_CIRCUIT_STATEMENT,
 819         misc::TOPLEVEL_REF_ARG,
 820         misc::ZERO_PTR,
 821         misc_early::BUILTIN_TYPE_SHADOW,
 822         misc_early::DOUBLE_NEG,
 823         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 824         misc_early::MIXED_CASE_HEX_LITERALS,
 825         misc_early::REDUNDANT_CLOSURE_CALL,
 826         misc_early::REDUNDANT_PATTERN,
 827         misc_early::UNNEEDED_FIELD_PATTERN,
 828         misc_early::ZERO_PREFIXED_LITERAL,
 829         mut_reference::UNNECESSARY_MUT_PASSED,
 830         mutex_atomic::MUTEX_ATOMIC,
 831         needless_bool::BOOL_COMPARISON,
 832         needless_bool::NEEDLESS_BOOL,
 833         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 834         needless_update::NEEDLESS_UPDATE,
 835         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 836         neg_multiply::NEG_MULTIPLY,
 837         new_without_default::NEW_WITHOUT_DEFAULT,
 838         no_effect::NO_EFFECT,
 839         no_effect::UNNECESSARY_OPERATION,
 840         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 841         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 842         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 843         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 844         ok_if_let::IF_LET_SOME_RESULT,
 845         open_options::NONSENSICAL_OPEN_OPTIONS,
 846         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 847         panic_unimplemented::PANIC_PARAMS,
 848         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 849         precedence::PRECEDENCE,
 850         ptr::CMP_NULL,
 851         ptr::MUT_FROM_REF,
 852         ptr::PTR_ARG,
 853         ptr_offset_with_cast::PTR_OFFSET_WITH_CAST,
 854         question_mark::QUESTION_MARK,
 855         ranges::ITERATOR_STEP_BY_ZERO,
 856         ranges::RANGE_MINUS_ONE,
 857         ranges::RANGE_PLUS_ONE,
 858         ranges::RANGE_ZIP_WITH_LEN,
 859         redundant_field_names::REDUNDANT_FIELD_NAMES,
 860         redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
 861         redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES,
 862         reference::DEREF_ADDROF,
 863         reference::REF_IN_DEREF,
 864         regex::INVALID_REGEX,
 865         regex::REGEX_MACRO,
 866         regex::TRIVIAL_REGEX,
 867         returns::LET_AND_RETURN,
 868         returns::NEEDLESS_RETURN,
 869         returns::UNUSED_UNIT,
 870         serde_api::SERDE_API_MISUSE,
 871         slow_vector_initialization::SLOW_VECTOR_INITIALIZATION,
 872         strings::STRING_LIT_AS_BYTES,
 873         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 874         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 875         swap::ALMOST_SWAPPED,
 876         swap::MANUAL_SWAP,
 877         temporary_assignment::TEMPORARY_ASSIGNMENT,
 878         transmute::CROSSPOINTER_TRANSMUTE,
 879         transmute::TRANSMUTE_BYTES_TO_STR,
 880         transmute::TRANSMUTE_INT_TO_BOOL,
 881         transmute::TRANSMUTE_INT_TO_CHAR,
 882         transmute::TRANSMUTE_INT_TO_FLOAT,
 883         transmute::TRANSMUTE_PTR_TO_PTR,
 884         transmute::TRANSMUTE_PTR_TO_REF,
 885         transmute::USELESS_TRANSMUTE,
 886         transmute::WRONG_TRANSMUTE,
 887         transmuting_null::TRANSMUTING_NULL,
 888         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 889         try_err::TRY_ERR,
 890         types::ABSURD_EXTREME_COMPARISONS,
 891         types::BORROWED_BOX,
 892         types::BOX_VEC,
 893         types::CAST_LOSSLESS,
 894         types::CAST_PTR_ALIGNMENT,
 895         types::CAST_REF_TO_MUT,
 896         types::CHAR_LIT_AS_U8,
 897         types::FN_TO_NUMERIC_CAST,
 898         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 899         types::IMPLICIT_HASHER,
 900         types::LET_UNIT_VALUE,
 901         types::OPTION_OPTION,
 902         types::TYPE_COMPLEXITY,
 903         types::UNIT_ARG,
 904         types::UNIT_CMP,
 905         types::UNNECESSARY_CAST,
 906         types::VEC_BOX,
 907         unicode::ZERO_WIDTH_SPACE,
 908         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 909         unused_io_amount::UNUSED_IO_AMOUNT,
 910         unused_label::UNUSED_LABEL,
 911         unwrap::PANICKING_UNWRAP,
 912         unwrap::UNNECESSARY_UNWRAP,
 913         vec::USELESS_VEC,
 914         write::PRINTLN_EMPTY_STRING,
 915         write::PRINT_LITERAL,
 916         write::PRINT_WITH_NEWLINE,
 917         write::WRITELN_EMPTY_STRING,
 918         write::WRITE_LITERAL,
 919         write::WRITE_WITH_NEWLINE,
 920         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 921     ]);
 922
 923     reg.register_lint_group("clippy::style", Some("clippy_style"), vec![
 924         assertions_on_constants::ASSERTIONS_ON_CONSTANTS,
 925         assign_ops::ASSIGN_OP_PATTERN,
 926         attrs::UNKNOWN_CLIPPY_LINTS,
 927         bit_mask::VERBOSE_BIT_MASK,
 928         blacklisted_name::BLACKLISTED_NAME,
 929         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 930         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 931         collapsible_if::COLLAPSIBLE_IF,
 932         enum_variants::ENUM_VARIANT_NAMES,
 933         enum_variants::MODULE_INCEPTION,
 934         eq_op::OP_REF,
 935         eta_reduction::REDUNDANT_CLOSURE,
 936         excessive_precision::EXCESSIVE_PRECISION,
 937         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 938         formatting::SUSPICIOUS_ELSE_FORMATTING,
 939         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 940         inherent_to_string::INHERENT_TO_STRING,
 941         len_zero::LEN_WITHOUT_IS_EMPTY,
 942         len_zero::LEN_ZERO,
 943         let_if_seq::USELESS_LET_IF_SEQ,
 944         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 945         literal_representation::UNREADABLE_LITERAL,
 946         loops::EMPTY_LOOP,
 947         loops::FOR_KV_MAP,
 948         loops::NEEDLESS_RANGE_LOOP,
 949         loops::WHILE_LET_ON_ITERATOR,
 950         main_recursion::MAIN_RECURSION,
 951         map_clone::MAP_CLONE,
 952         matches::MATCH_BOOL,
 953         matches::MATCH_OVERLAPPING_ARM,
 954         matches::MATCH_REF_PATS,
 955         matches::MATCH_WILD_ERR_ARM,
 956         matches::SINGLE_MATCH,
 957         mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
 958         methods::CHARS_LAST_CMP,
 959         methods::INTO_ITER_ON_REF,
 960         methods::ITER_CLONED_COLLECT,
 961         methods::ITER_SKIP_NEXT,
 962         methods::MANUAL_SATURATING_ARITHMETIC,
 963         methods::NEW_RET_NO_SELF,
 964         methods::OK_EXPECT,
 965         methods::OPTION_MAP_OR_NONE,
 966         methods::SHOULD_IMPLEMENT_TRAIT,
 967         methods::STRING_EXTEND_CHARS,
 968         methods::UNNECESSARY_FOLD,
 969         methods::WRONG_SELF_CONVENTION,
 970         misc::TOPLEVEL_REF_ARG,
 971         misc::ZERO_PTR,
 972         misc_early::BUILTIN_TYPE_SHADOW,
 973         misc_early::DOUBLE_NEG,
 974         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 975         misc_early::MIXED_CASE_HEX_LITERALS,
 976         misc_early::REDUNDANT_PATTERN,
 977         misc_early::UNNEEDED_FIELD_PATTERN,
 978         mut_reference::UNNECESSARY_MUT_PASSED,
 979         neg_multiply::NEG_MULTIPLY,
 980         new_without_default::NEW_WITHOUT_DEFAULT,
 981         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 982         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 983         ok_if_let::IF_LET_SOME_RESULT,
 984         panic_unimplemented::PANIC_PARAMS,
 985         ptr::CMP_NULL,
 986         ptr::PTR_ARG,
 987         question_mark::QUESTION_MARK,
 988         redundant_field_names::REDUNDANT_FIELD_NAMES,
 989         redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
 990         redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES,
 991         regex::REGEX_MACRO,
 992         regex::TRIVIAL_REGEX,
 993         returns::LET_AND_RETURN,
 994         returns::NEEDLESS_RETURN,
 995         returns::UNUSED_UNIT,
 996         strings::STRING_LIT_AS_BYTES,
 997         try_err::TRY_ERR,
 998         types::FN_TO_NUMERIC_CAST,
 999         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
1000         types::IMPLICIT_HASHER,
1001         types::LET_UNIT_VALUE,
1002         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
1003         write::PRINTLN_EMPTY_STRING,
1004         write::PRINT_LITERAL,
1005         write::PRINT_WITH_NEWLINE,
1006         write::WRITELN_EMPTY_STRING,
1007         write::WRITE_LITERAL,
1008         write::WRITE_WITH_NEWLINE,
1009     ]);
1010
1011     reg.register_lint_group("clippy::complexity", Some("clippy_complexity"), vec![
1012         assign_ops::MISREFACTORED_ASSIGN_OP,
1013         attrs::DEPRECATED_CFG_ATTR,
1014         booleans::NONMINIMAL_BOOL,
1015         cognitive_complexity::COGNITIVE_COMPLEXITY,
1016         double_comparison::DOUBLE_COMPARISONS,
1017         double_parens::DOUBLE_PARENS,
1018         duration_subsec::DURATION_SUBSEC,
1019         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
1020         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
1021         explicit_write::EXPLICIT_WRITE,
1022         format::USELESS_FORMAT,
1023         functions::TOO_MANY_ARGUMENTS,
1024         get_last_with_len::GET_LAST_WITH_LEN,
1025         identity_conversion::IDENTITY_CONVERSION,
1026         identity_op::IDENTITY_OP,
1027         int_plus_one::INT_PLUS_ONE,
1028         lifetimes::EXTRA_UNUSED_LIFETIMES,
1029         lifetimes::NEEDLESS_LIFETIMES,
1030         loops::EXPLICIT_COUNTER_LOOP,
1031         loops::MUT_RANGE_BOUND,
1032         loops::WHILE_LET_LOOP,
1033         map_unit_fn::OPTION_MAP_UNIT_FN,
1034         map_unit_fn::RESULT_MAP_UNIT_FN,
1035         matches::MATCH_AS_REF,
1036         methods::CHARS_NEXT_CMP,
1037         methods::CLONE_ON_COPY,
1038         methods::FILTER_NEXT,
1039         methods::FLAT_MAP_IDENTITY,
1040         methods::OPTION_AND_THEN_SOME,
1041         methods::SEARCH_IS_SOME,
1042         methods::SUSPICIOUS_MAP,
1043         methods::UNNECESSARY_FILTER_MAP,
1044         methods::USELESS_ASREF,
1045         misc::SHORT_CIRCUIT_STATEMENT,
1046         misc_early::REDUNDANT_CLOSURE_CALL,
1047         misc_early::ZERO_PREFIXED_LITERAL,
1048         needless_bool::BOOL_COMPARISON,
1049         needless_bool::NEEDLESS_BOOL,
1050         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
1051         needless_update::NEEDLESS_UPDATE,
1052         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
1053         no_effect::NO_EFFECT,
1054         no_effect::UNNECESSARY_OPERATION,
1055         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
1056         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
1057         precedence::PRECEDENCE,
1058         ptr_offset_with_cast::PTR_OFFSET_WITH_CAST,
1059         ranges::RANGE_MINUS_ONE,
1060         ranges::RANGE_PLUS_ONE,
1061         ranges::RANGE_ZIP_WITH_LEN,
1062         reference::DEREF_ADDROF,
1063         reference::REF_IN_DEREF,
1064         swap::MANUAL_SWAP,
1065         temporary_assignment::TEMPORARY_ASSIGNMENT,
1066         transmute::CROSSPOINTER_TRANSMUTE,
1067         transmute::TRANSMUTE_BYTES_TO_STR,
1068         transmute::TRANSMUTE_INT_TO_BOOL,
1069         transmute::TRANSMUTE_INT_TO_CHAR,
1070         transmute::TRANSMUTE_INT_TO_FLOAT,
1071         transmute::TRANSMUTE_PTR_TO_PTR,
1072         transmute::TRANSMUTE_PTR_TO_REF,
1073         transmute::USELESS_TRANSMUTE,
1074         types::BORROWED_BOX,
1075         types::CAST_LOSSLESS,
1076         types::CHAR_LIT_AS_U8,
1077         types::OPTION_OPTION,
1078         types::TYPE_COMPLEXITY,
1079         types::UNIT_ARG,
1080         types::UNNECESSARY_CAST,
1081         types::VEC_BOX,
1082         unused_label::UNUSED_LABEL,
1083         unwrap::UNNECESSARY_UNWRAP,
1084         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
1085     ]);
1086
1087     reg.register_lint_group("clippy::correctness", Some("clippy_correctness"), vec![
1088         approx_const::APPROX_CONSTANT,
1089         attrs::DEPRECATED_SEMVER,
1090         attrs::USELESS_ATTRIBUTE,
1091         bit_mask::BAD_BIT_MASK,
1092         bit_mask::INEFFECTIVE_BIT_MASK,
1093         booleans::LOGIC_BUG,
1094         copies::IFS_SAME_COND,
1095         copies::IF_SAME_THEN_ELSE,
1096         derive::DERIVE_HASH_XOR_EQ,
1097         drop_bounds::DROP_BOUNDS,
1098         drop_forget_ref::DROP_COPY,
1099         drop_forget_ref::DROP_REF,
1100         drop_forget_ref::FORGET_COPY,
1101         drop_forget_ref::FORGET_REF,
1102         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
1103         eq_op::EQ_OP,
1104         erasing_op::ERASING_OP,
1105         formatting::POSSIBLE_MISSING_COMMA,
1106         functions::NOT_UNSAFE_PTR_ARG_DEREF,
1107         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
1108         infinite_iter::INFINITE_ITER,
1109         inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY,
1110         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
1111         literal_representation::MISTYPED_LITERAL_SUFFIXES,
1112         loops::FOR_LOOP_OVER_OPTION,
1113         loops::FOR_LOOP_OVER_RESULT,
1114         loops::ITER_NEXT_LOOP,
1115         loops::NEVER_LOOP,
1116         loops::REVERSE_RANGE_LOOP,
1117         loops::WHILE_IMMUTABLE_CONDITION,
1118         mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
1119         methods::CLONE_DOUBLE_REF,
1120         methods::INTO_ITER_ON_ARRAY,
1121         methods::TEMPORARY_CSTRING_AS_PTR,
1122         methods::UNINIT_ASSUMED_INIT,
1123         minmax::MIN_MAX,
1124         misc::CMP_NAN,
1125         misc::FLOAT_CMP,
1126         misc::MODULO_ONE,
1127         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
1128         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
1129         open_options::NONSENSICAL_OPEN_OPTIONS,
1130         ptr::MUT_FROM_REF,
1131         ranges::ITERATOR_STEP_BY_ZERO,
1132         regex::INVALID_REGEX,
1133         serde_api::SERDE_API_MISUSE,
1134         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
1135         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
1136         swap::ALMOST_SWAPPED,
1137         transmute::WRONG_TRANSMUTE,
1138         transmuting_null::TRANSMUTING_NULL,
1139         types::ABSURD_EXTREME_COMPARISONS,
1140         types::CAST_PTR_ALIGNMENT,
1141         types::CAST_REF_TO_MUT,
1142         types::UNIT_CMP,
1143         unicode::ZERO_WIDTH_SPACE,
1144         unused_io_amount::UNUSED_IO_AMOUNT,
1145         unwrap::PANICKING_UNWRAP,
1146     ]);
1147
1148     reg.register_lint_group("clippy::perf", Some("clippy_perf"), vec![
1149         bytecount::NAIVE_BYTECOUNT,
1150         entry::MAP_ENTRY,
1151         escape::BOXED_LOCAL,
1152         large_enum_variant::LARGE_ENUM_VARIANT,
1153         loops::MANUAL_MEMCPY,
1154         loops::NEEDLESS_COLLECT,
1155         methods::EXPECT_FUN_CALL,
1156         methods::ITER_NTH,
1157         methods::OR_FUN_CALL,
1158         methods::SINGLE_CHAR_PATTERN,
1159         misc::CMP_OWNED,
1160         mutex_atomic::MUTEX_ATOMIC,
1161         slow_vector_initialization::SLOW_VECTOR_INITIALIZATION,
1162         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
1163         types::BOX_VEC,
1164         vec::USELESS_VEC,
1165     ]);
1166
1167     reg.register_lint_group("clippy::cargo", Some("clippy_cargo"), vec![
1168         cargo_common_metadata::CARGO_COMMON_METADATA,
1169         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
1170         wildcard_dependencies::WILDCARD_DEPENDENCIES,
1171     ]);
1172
1173     reg.register_lint_group("clippy::nursery", Some("clippy_nursery"), vec![
1174         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
1175         fallible_impl_from::FALLIBLE_IMPL_FROM,
1176         missing_const_for_fn::MISSING_CONST_FOR_FN,
1177         mutex_atomic::MUTEX_INTEGER,
1178         needless_borrow::NEEDLESS_BORROW,
1179         path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,
1180         redundant_clone::REDUNDANT_CLONE,
1181     ]);
1182 }
1183
1184 #[rustfmt::skip]
1185 fn register_removed_non_tool_lints(store: &mut rustc::lint::LintStore) {
1186     store.register_removed(
1187         "should_assert_eq",
1188         "`assert!()` will be more flexible with RFC 2011",
1189     );
1190     store.register_removed(
1191         "extend_from_slice",
1192         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
1193     );
1194     store.register_removed(
1195         "range_step_by_zero",
1196         "`iterator.step_by(0)` panics nowadays",
1197     );
1198     store.register_removed(
1199         "unstable_as_slice",
1200         "`Vec::as_slice` has been stabilized in 1.7",
1201     );
1202     store.register_removed(
1203         "unstable_as_mut_slice",
1204         "`Vec::as_mut_slice` has been stabilized in 1.7",
1205     );
1206     store.register_removed(
1207         "str_to_string",
1208         "using `str::to_string` is common even today and specialization will likely happen soon",
1209     );
1210     store.register_removed(
1211         "string_to_string",
1212         "using `string::to_string` is common even today and specialization will likely happen soon",
1213     );
1214     store.register_removed(
1215         "misaligned_transmute",
1216         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
1217     );
1218     store.register_removed(
1219         "assign_ops",
1220         "using compound assignment operators (e.g., `+=`) is harmless",
1221     );
1222     store.register_removed(
1223         "if_let_redundant_pattern_matching",
1224         "this lint has been changed to redundant_pattern_matching",
1225     );
1226     store.register_removed(
1227         "unsafe_vector_initialization",
1228         "the replacement suggested by this lint had substantially different behavior",
1229     );
1230 }
1231
1232 /// Register renamed lints.
1233 ///
1234 /// Used in `./src/driver.rs`.
1235 pub fn register_renamed(ls: &mut rustc::lint::LintStore) {
1236     ls.register_renamed("clippy::stutter", "clippy::module_name_repetitions");
1237     ls.register_renamed("clippy::new_without_default_derive", "clippy::new_without_default");
1238     ls.register_renamed("clippy::cyclomatic_complexity", "clippy::cognitive_complexity");
1239     ls.register_renamed("clippy::const_static_lifetime", "clippy::redundant_static_lifetimes");
1240 }
1241
1242 // only exists to let the dogfood integration test works.
1243 // Don't run clippy as an executable directly
1244 #[allow(dead_code)]
1245 fn main() {
1246     panic!("Please use the cargo-clippy executable");
1247 }