clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(rustc_private)]
   5 #![feature(slice_patterns)]
   6 #![feature(stmt_expr_attributes)]
   7 #![feature(range_contains)]
   8 #![feature(macro_vis_matcher)]
   9 #![allow(unknown_lints, indexing_slicing, shadow_reuse, missing_docs_in_private_items)]
  10 #![recursion_limit = "256"]
  11 #![allow(stable_features)]
  12 #![feature(iterator_find_map)]
  13 #![feature(macro_at_most_once_rep)]
  14 #![feature(rust_2018_preview)]
  15
  16 extern crate cargo_metadata;
  17 #[macro_use]
  18 extern crate rustc;
  19 extern crate rustc_target;
  20 extern crate rustc_typeck;
  21 extern crate syntax;
  22 extern crate syntax_pos;
  23
  24 extern crate toml;
  25
  26 // for unicode nfc normalization
  27
  28 extern crate unicode_normalization;
  29
  30 // for semver check in attrs.rs
  31
  32 extern crate semver;
  33
  34 // for regex checking
  35
  36 extern crate regex_syntax;
  37
  38 // for finding minimal boolean expressions
  39
  40 extern crate quine_mc_cluskey;
  41
  42 extern crate rustc_errors;
  43 extern crate rustc_plugin;
  44
  45 #[macro_use]
  46 extern crate matches as matches_macro;
  47
  48 extern crate serde;
  49 #[macro_use]
  50 extern crate serde_derive;
  51
  52 #[macro_use]
  53 extern crate lazy_static;
  54
  55 extern crate itertools;
  56 extern crate pulldown_cmark;
  57 extern crate url;
  58
  59 #[macro_use]
  60 extern crate if_chain;
  61
  62 macro_rules! declare_clippy_lint {
  63     { pub $name:tt, style, $description:tt } => {
  64         declare_lint! { pub $name, Warn, $description }
  65     };
  66     { pub $name:tt, correctness, $description:tt } => {
  67         declare_lint! { pub $name, Deny, $description }
  68     };
  69     { pub $name:tt, complexity, $description:tt } => {
  70         declare_lint! { pub $name, Warn, $description }
  71     };
  72     { pub $name:tt, perf, $description:tt } => {
  73         declare_lint! { pub $name, Warn, $description }
  74     };
  75     { pub $name:tt, pedantic, $description:tt } => {
  76         declare_lint! { pub $name, Allow, $description }
  77     };
  78     { pub $name:tt, restriction, $description:tt } => {
  79         declare_lint! { pub $name, Allow, $description }
  80     };
  81     { pub $name:tt, cargo, $description:tt } => {
  82         declare_lint! { pub $name, Allow, $description }
  83     };
  84     { pub $name:tt, nursery, $description:tt } => {
  85         declare_lint! { pub $name, Allow, $description }
  86     };
  87     { pub $name:tt, internal, $description:tt } => {
  88         declare_lint! { pub $name, Allow, $description }
  89     };
  90     { pub $name:tt, internal_warn, $description:tt } => {
  91         declare_lint! { pub $name, Warn, $description }
  92     };
  93 }
  94
  95 pub mod consts;
  96 #[macro_use]
  97 pub mod utils;
  98
  99 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 100 pub mod approx_const;
 101 pub mod arithmetic;
 102 pub mod array_indexing;
 103 pub mod assign_ops;
 104 pub mod attrs;
 105 pub mod bit_mask;
 106 pub mod blacklisted_name;
 107 pub mod block_in_if_condition;
 108 pub mod booleans;
 109 pub mod bytecount;
 110 pub mod collapsible_if;
 111 pub mod const_static_lifetime;
 112 pub mod copies;
 113 pub mod cyclomatic_complexity;
 114 pub mod derive;
 115 pub mod doc;
 116 pub mod double_comparison;
 117 pub mod double_parens;
 118 pub mod drop_forget_ref;
 119 pub mod duration_subsec;
 120 pub mod else_if_without_else;
 121 pub mod empty_enum;
 122 pub mod entry;
 123 pub mod enum_clike;
 124 pub mod enum_glob_use;
 125 pub mod enum_variants;
 126 pub mod eq_op;
 127 pub mod erasing_op;
 128 pub mod escape;
 129 pub mod eta_reduction;
 130 pub mod eval_order_dependence;
 131 pub mod excessive_precision;
 132 pub mod explicit_write;
 133 pub mod fallible_impl_from;
 134 pub mod format;
 135 pub mod formatting;
 136 pub mod functions;
 137 pub mod identity_conversion;
 138 pub mod identity_op;
 139 pub mod if_let_redundant_pattern_matching;
 140 pub mod if_not_else;
 141 pub mod infallible_destructuring_match;
 142 pub mod infinite_iter;
 143 pub mod inherent_impl;
 144 pub mod inline_fn_without_body;
 145 pub mod int_plus_one;
 146 pub mod invalid_ref;
 147 pub mod items_after_statements;
 148 pub mod large_enum_variant;
 149 pub mod len_zero;
 150 pub mod let_if_seq;
 151 pub mod lifetimes;
 152 pub mod literal_representation;
 153 pub mod loops;
 154 pub mod map_clone;
 155 pub mod map_unit_fn;
 156 pub mod matches;
 157 pub mod mem_forget;
 158 pub mod methods;
 159 pub mod minmax;
 160 pub mod misc;
 161 pub mod misc_early;
 162 pub mod missing_doc;
 163 pub mod multiple_crate_versions;
 164 pub mod mut_mut;
 165 pub mod mut_reference;
 166 pub mod mutex_atomic;
 167 pub mod needless_bool;
 168 pub mod needless_borrow;
 169 pub mod needless_borrowed_ref;
 170 pub mod needless_continue;
 171 pub mod needless_pass_by_value;
 172 pub mod needless_update;
 173 pub mod neg_cmp_op_on_partial_ord;
 174 pub mod neg_multiply;
 175 pub mod new_without_default;
 176 pub mod no_effect;
 177 pub mod non_expressive_names;
 178 pub mod ok_if_let;
 179 pub mod open_options;
 180 pub mod overflow_check_conditional;
 181 pub mod panic_unimplemented;
 182 pub mod partialeq_ne_impl;
 183 pub mod precedence;
 184 pub mod ptr;
 185 pub mod question_mark;
 186 pub mod ranges;
 187 pub mod redundant_field_names;
 188 pub mod reference;
 189 pub mod regex;
 190 pub mod replace_consts;
 191 pub mod returns;
 192 pub mod serde_api;
 193 pub mod shadow;
 194 pub mod strings;
 195 pub mod suspicious_trait_impl;
 196 pub mod swap;
 197 pub mod temporary_assignment;
 198 pub mod transmute;
 199 pub mod trivially_copy_pass_by_ref;
 200 pub mod types;
 201 pub mod unicode;
 202 pub mod unsafe_removed_from_name;
 203 pub mod unused_io_amount;
 204 pub mod unused_label;
 205 pub mod unwrap;
 206 pub mod use_self;
 207 pub mod vec;
 208 pub mod write;
 209 pub mod zero_div_zero;
 210 // end lints modules, do not remove this comment, it’s used in `update_lints`
 211
 212 mod reexport {
 213     pub use syntax::ast::{Name, NodeId};
 214 }
 215
 216 #[cfg_attr(rustfmt, rustfmt_skip)]
 217 pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
 218     let conf = match utils::conf::file_from_args(reg.args()) {
 219         Ok(file_name) => {
 220             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 221             // do not require the file to exist
 222             let file_name = if let Some(file_name) = file_name {
 223                 Some(file_name)
 224             } else {
 225                 match utils::conf::lookup_conf_file() {
 226                     Ok(path) => path,
 227                     Err(error) => {
 228                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 229                         None
 230                     }
 231                 }
 232             };
 233
 234             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 235                 reg.sess
 236                     .local_crate_source_file
 237                     .as_ref()
 238                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 239                     .unwrap_or_default()
 240                     .join(file_name)
 241             } else {
 242                 file_name
 243             });
 244
 245             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 246
 247             // all conf errors are non-fatal, we just use the default conf in case of error
 248             for error in errors {
 249                 reg.sess.struct_err(&format!("error reading Clippy's configuration file `{}`: {}", file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""), error)).emit();
 250             }
 251
 252             conf
 253         }
 254         Err((err, span)) => {
 255             reg.sess.struct_span_err(span, err)
 256                     .span_note(span, "Clippy will use default configuration")
 257                     .emit();
 258             toml::from_str("").expect("we never error on empty config files")
 259         }
 260     };
 261
 262     let mut store = reg.sess.lint_store.borrow_mut();
 263     store.register_removed(
 264         "should_assert_eq",
 265         "`assert!()` will be more flexible with RFC 2011",
 266     );
 267     store.register_removed(
 268         "extend_from_slice",
 269         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 270     );
 271     store.register_removed(
 272         "range_step_by_zero",
 273         "`iterator.step_by(0)` panics nowadays",
 274     );
 275     store.register_removed(
 276         "unstable_as_slice",
 277         "`Vec::as_slice` has been stabilized in 1.7",
 278     );
 279     store.register_removed(
 280         "unstable_as_mut_slice",
 281         "`Vec::as_mut_slice` has been stabilized in 1.7",
 282     );
 283     store.register_removed(
 284         "str_to_string",
 285         "using `str::to_string` is common even today and specialization will likely happen soon",
 286     );
 287     store.register_removed(
 288         "string_to_string",
 289         "using `string::to_string` is common even today and specialization will likely happen soon",
 290     );
 291     store.register_removed(
 292         "misaligned_transmute",
 293         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 294     );
 295     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 296
 297     reg.register_late_lint_pass(box serde_api::Serde);
 298     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 299     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 300     reg.register_late_lint_pass(box utils::inspector::Pass);
 301     reg.register_late_lint_pass(box utils::author::Pass);
 302     reg.register_late_lint_pass(box types::TypePass);
 303     reg.register_late_lint_pass(box booleans::NonminimalBool);
 304     reg.register_late_lint_pass(box eq_op::EqOp);
 305     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 306     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 307     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 308     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 309     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 310     reg.register_late_lint_pass(box ptr::PointerPass);
 311     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 312     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 313     reg.register_late_lint_pass(box approx_const::Pass);
 314     reg.register_late_lint_pass(box misc::Pass);
 315     reg.register_early_lint_pass(box precedence::Precedence);
 316     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 317     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 318     reg.register_late_lint_pass(box identity_op::IdentityOp);
 319     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 320     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 321     reg.register_late_lint_pass(box mut_mut::MutMut);
 322     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 323     reg.register_late_lint_pass(box len_zero::LenZero);
 324     reg.register_late_lint_pass(box attrs::AttrPass);
 325     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 326     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 327     reg.register_late_lint_pass(box unicode::Unicode);
 328     reg.register_late_lint_pass(box strings::StringAdd);
 329     reg.register_early_lint_pass(box returns::ReturnPass);
 330     reg.register_late_lint_pass(box methods::Pass);
 331     reg.register_late_lint_pass(box shadow::Pass);
 332     reg.register_late_lint_pass(box types::LetPass);
 333     reg.register_late_lint_pass(box types::UnitCmp);
 334     reg.register_late_lint_pass(box loops::Pass);
 335     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 336     reg.register_late_lint_pass(box entry::HashMapLint);
 337     reg.register_late_lint_pass(box ranges::Pass);
 338     reg.register_late_lint_pass(box types::CastPass);
 339     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 340     reg.register_late_lint_pass(box matches::MatchPass);
 341     reg.register_late_lint_pass(box minmax::MinMaxPass);
 342     reg.register_late_lint_pass(box open_options::NonSensical);
 343     reg.register_late_lint_pass(box zero_div_zero::Pass);
 344     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 345     reg.register_late_lint_pass(box needless_update::Pass);
 346     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 347     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 348     reg.register_late_lint_pass(box no_effect::Pass);
 349     reg.register_late_lint_pass(box map_clone::Pass);
 350     reg.register_late_lint_pass(box temporary_assignment::Pass);
 351     reg.register_late_lint_pass(box transmute::Transmute);
 352     reg.register_late_lint_pass(
 353         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 354     );
 355     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 356     reg.register_early_lint_pass(box misc_early::MiscEarly);
 357     reg.register_late_lint_pass(box array_indexing::ArrayIndexing);
 358     reg.register_late_lint_pass(box panic_unimplemented::Pass);
 359     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 360     reg.register_late_lint_pass(box derive::Derive);
 361     reg.register_late_lint_pass(box types::CharLitAsU8);
 362     reg.register_late_lint_pass(box write::Pass);
 363     reg.register_late_lint_pass(box vec::Pass);
 364     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 365         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 366     });
 367     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 368     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 369     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 370     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 371     reg.register_late_lint_pass(box regex::Pass::default());
 372     reg.register_late_lint_pass(box copies::CopyAndPaste);
 373     reg.register_late_lint_pass(box format::Pass);
 374     reg.register_early_lint_pass(box formatting::Formatting);
 375     reg.register_late_lint_pass(box swap::Swap);
 376     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 377     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 378     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 379     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 380     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 381     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 382     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 383     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 384     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 385     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 386     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 387     reg.register_late_lint_pass(box mem_forget::MemForget);
 388     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 389     reg.register_late_lint_pass(box assign_ops::AssignOps);
 390     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 391     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 392     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 393     reg.register_late_lint_pass(box ok_if_let::Pass);
 394     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 395     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 396     reg.register_early_lint_pass(box reference::Pass);
 397     reg.register_early_lint_pass(box reference::DerefPass);
 398     reg.register_early_lint_pass(box double_parens::DoubleParens);
 399     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 400     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 401     reg.register_late_lint_pass(box explicit_write::Pass);
 402     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 403     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 404             conf.trivial_copy_size_limit,
 405             &reg.sess.target,
 406     ));
 407     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 408     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 409             conf.literal_representation_threshold
 410     ));
 411     reg.register_late_lint_pass(box use_self::UseSelf);
 412     reg.register_late_lint_pass(box bytecount::ByteCount);
 413     reg.register_late_lint_pass(box infinite_iter::Pass);
 414     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 415     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 416     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 417     reg.register_late_lint_pass(box types::ImplicitHasher);
 418     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 419     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 420     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 421     reg.register_late_lint_pass(box types::UnitArg);
 422     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 423     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 424     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 425     reg.register_late_lint_pass(box redundant_field_names::RedundantFieldNames);
 426     reg.register_early_lint_pass(box multiple_crate_versions::Pass);
 427     reg.register_late_lint_pass(box map_unit_fn::Pass);
 428     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 429     reg.register_late_lint_pass(box inherent_impl::Pass::default());
 430     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 431     reg.register_late_lint_pass(box unwrap::Pass);
 432     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 433
 434
 435     reg.register_lint_group("clippy_restriction", vec![
 436         arithmetic::FLOAT_ARITHMETIC,
 437         arithmetic::INTEGER_ARITHMETIC,
 438         array_indexing::INDEXING_SLICING,
 439         assign_ops::ASSIGN_OPS,
 440         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 441         inherent_impl::MULTIPLE_INHERENT_IMPL,
 442         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 443         mem_forget::MEM_FORGET,
 444         methods::CLONE_ON_REF_PTR,
 445         methods::OPTION_UNWRAP_USED,
 446         methods::RESULT_UNWRAP_USED,
 447         methods::WRONG_PUB_SELF_CONVENTION,
 448         misc::FLOAT_CMP_CONST,
 449         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 450         panic_unimplemented::UNIMPLEMENTED,
 451         shadow::SHADOW_REUSE,
 452         shadow::SHADOW_SAME,
 453         shadow::SHADOW_UNRELATED,
 454         strings::STRING_ADD,
 455         write::PRINT_STDOUT,
 456         write::USE_DEBUG,
 457     ]);
 458
 459     reg.register_lint_group("clippy_pedantic", vec![
 460         attrs::INLINE_ALWAYS,
 461         copies::MATCH_SAME_ARMS,
 462         derive::EXPL_IMPL_CLONE_ON_COPY,
 463         doc::DOC_MARKDOWN,
 464         empty_enum::EMPTY_ENUM,
 465         enum_glob_use::ENUM_GLOB_USE,
 466         enum_variants::PUB_ENUM_VARIANT_NAMES,
 467         enum_variants::STUTTER,
 468         if_not_else::IF_NOT_ELSE,
 469         infinite_iter::MAYBE_INFINITE_ITER,
 470         items_after_statements::ITEMS_AFTER_STATEMENTS,
 471         matches::SINGLE_MATCH_ELSE,
 472         methods::FILTER_MAP,
 473         methods::OPTION_MAP_UNWRAP_OR,
 474         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 475         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 476         misc::USED_UNDERSCORE_BINDING,
 477         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 478         mut_mut::MUT_MUT,
 479         needless_continue::NEEDLESS_CONTINUE,
 480         non_expressive_names::SIMILAR_NAMES,
 481         replace_consts::REPLACE_CONSTS,
 482         strings::STRING_ADD_ASSIGN,
 483         types::CAST_POSSIBLE_TRUNCATION,
 484         types::CAST_POSSIBLE_WRAP,
 485         types::CAST_PRECISION_LOSS,
 486         types::CAST_SIGN_LOSS,
 487         types::INVALID_UPCAST_COMPARISONS,
 488         types::LINKEDLIST,
 489         unicode::NON_ASCII_LITERAL,
 490         unicode::UNICODE_NOT_NFC,
 491         use_self::USE_SELF,
 492     ]);
 493
 494     reg.register_lint_group("clippy_internal", vec![
 495         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 496         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 497     ]);
 498
 499     reg.register_lint_group("clippy", vec![
 500         approx_const::APPROX_CONSTANT,
 501         array_indexing::OUT_OF_BOUNDS_INDEXING,
 502         assign_ops::ASSIGN_OP_PATTERN,
 503         assign_ops::MISREFACTORED_ASSIGN_OP,
 504         attrs::DEPRECATED_SEMVER,
 505         attrs::USELESS_ATTRIBUTE,
 506         bit_mask::BAD_BIT_MASK,
 507         bit_mask::INEFFECTIVE_BIT_MASK,
 508         bit_mask::VERBOSE_BIT_MASK,
 509         blacklisted_name::BLACKLISTED_NAME,
 510         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 511         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 512         booleans::LOGIC_BUG,
 513         booleans::NONMINIMAL_BOOL,
 514         bytecount::NAIVE_BYTECOUNT,
 515         collapsible_if::COLLAPSIBLE_IF,
 516         const_static_lifetime::CONST_STATIC_LIFETIME,
 517         copies::IF_SAME_THEN_ELSE,
 518         copies::IFS_SAME_COND,
 519         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 520         derive::DERIVE_HASH_XOR_EQ,
 521         double_comparison::DOUBLE_COMPARISONS,
 522         double_parens::DOUBLE_PARENS,
 523         drop_forget_ref::DROP_COPY,
 524         drop_forget_ref::DROP_REF,
 525         drop_forget_ref::FORGET_COPY,
 526         drop_forget_ref::FORGET_REF,
 527         duration_subsec::DURATION_SUBSEC,
 528         entry::MAP_ENTRY,
 529         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 530         enum_variants::ENUM_VARIANT_NAMES,
 531         enum_variants::MODULE_INCEPTION,
 532         eq_op::EQ_OP,
 533         eq_op::OP_REF,
 534         erasing_op::ERASING_OP,
 535         escape::BOXED_LOCAL,
 536         eta_reduction::REDUNDANT_CLOSURE,
 537         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 538         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 539         excessive_precision::EXCESSIVE_PRECISION,
 540         explicit_write::EXPLICIT_WRITE,
 541         format::USELESS_FORMAT,
 542         formatting::POSSIBLE_MISSING_COMMA,
 543         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 544         formatting::SUSPICIOUS_ELSE_FORMATTING,
 545         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 546         functions::TOO_MANY_ARGUMENTS,
 547         identity_conversion::IDENTITY_CONVERSION,
 548         identity_op::IDENTITY_OP,
 549         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 550         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 551         infinite_iter::INFINITE_ITER,
 552         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 553         int_plus_one::INT_PLUS_ONE,
 554         invalid_ref::INVALID_REF,
 555         large_enum_variant::LARGE_ENUM_VARIANT,
 556         len_zero::LEN_WITHOUT_IS_EMPTY,
 557         len_zero::LEN_ZERO,
 558         let_if_seq::USELESS_LET_IF_SEQ,
 559         lifetimes::EXTRA_UNUSED_LIFETIMES,
 560         lifetimes::NEEDLESS_LIFETIMES,
 561         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 562         literal_representation::LARGE_DIGIT_GROUPS,
 563         literal_representation::UNREADABLE_LITERAL,
 564         loops::EMPTY_LOOP,
 565         loops::EXPLICIT_COUNTER_LOOP,
 566         loops::EXPLICIT_INTO_ITER_LOOP,
 567         loops::EXPLICIT_ITER_LOOP,
 568         loops::FOR_KV_MAP,
 569         loops::FOR_LOOP_OVER_OPTION,
 570         loops::FOR_LOOP_OVER_RESULT,
 571         loops::ITER_NEXT_LOOP,
 572         loops::MANUAL_MEMCPY,
 573         loops::MUT_RANGE_BOUND,
 574         loops::NEEDLESS_RANGE_LOOP,
 575         loops::NEVER_LOOP,
 576         loops::REVERSE_RANGE_LOOP,
 577         loops::UNUSED_COLLECT,
 578         loops::WHILE_IMMUTABLE_CONDITION,
 579         loops::WHILE_LET_LOOP,
 580         loops::WHILE_LET_ON_ITERATOR,
 581         map_clone::MAP_CLONE,
 582         map_unit_fn::OPTION_MAP_UNIT_FN,
 583         map_unit_fn::RESULT_MAP_UNIT_FN,
 584         matches::MATCH_AS_REF,
 585         matches::MATCH_BOOL,
 586         matches::MATCH_OVERLAPPING_ARM,
 587         matches::MATCH_REF_PATS,
 588         matches::MATCH_WILD_ERR_ARM,
 589         matches::SINGLE_MATCH,
 590         methods::CHARS_LAST_CMP,
 591         methods::CHARS_NEXT_CMP,
 592         methods::CLONE_DOUBLE_REF,
 593         methods::CLONE_ON_COPY,
 594         methods::EXPECT_FUN_CALL,
 595         methods::FILTER_NEXT,
 596         methods::GET_UNWRAP,
 597         methods::ITER_CLONED_COLLECT,
 598         methods::ITER_NTH,
 599         methods::ITER_SKIP_NEXT,
 600         methods::NEW_RET_NO_SELF,
 601         methods::OK_EXPECT,
 602         methods::OPTION_MAP_OR_NONE,
 603         methods::OR_FUN_CALL,
 604         methods::SEARCH_IS_SOME,
 605         methods::SHOULD_IMPLEMENT_TRAIT,
 606         methods::SINGLE_CHAR_PATTERN,
 607         methods::STRING_EXTEND_CHARS,
 608         methods::TEMPORARY_CSTRING_AS_PTR,
 609         methods::UNNECESSARY_FOLD,
 610         methods::USELESS_ASREF,
 611         methods::WRONG_SELF_CONVENTION,
 612         minmax::MIN_MAX,
 613         misc::CMP_NAN,
 614         misc::CMP_OWNED,
 615         misc::FLOAT_CMP,
 616         misc::MODULO_ONE,
 617         misc::REDUNDANT_PATTERN,
 618         misc::SHORT_CIRCUIT_STATEMENT,
 619         misc::TOPLEVEL_REF_ARG,
 620         misc::ZERO_PTR,
 621         misc_early::BUILTIN_TYPE_SHADOW,
 622         misc_early::DOUBLE_NEG,
 623         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 624         misc_early::MIXED_CASE_HEX_LITERALS,
 625         misc_early::REDUNDANT_CLOSURE_CALL,
 626         misc_early::UNNEEDED_FIELD_PATTERN,
 627         misc_early::ZERO_PREFIXED_LITERAL,
 628         mut_reference::UNNECESSARY_MUT_PASSED,
 629         mutex_atomic::MUTEX_ATOMIC,
 630         needless_bool::BOOL_COMPARISON,
 631         needless_bool::NEEDLESS_BOOL,
 632         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 633         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 634         needless_update::NEEDLESS_UPDATE,
 635         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 636         neg_multiply::NEG_MULTIPLY,
 637         new_without_default::NEW_WITHOUT_DEFAULT,
 638         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 639         no_effect::NO_EFFECT,
 640         no_effect::UNNECESSARY_OPERATION,
 641         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 642         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 643         ok_if_let::IF_LET_SOME_RESULT,
 644         open_options::NONSENSICAL_OPEN_OPTIONS,
 645         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 646         panic_unimplemented::PANIC_PARAMS,
 647         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 648         precedence::PRECEDENCE,
 649         ptr::CMP_NULL,
 650         ptr::MUT_FROM_REF,
 651         ptr::PTR_ARG,
 652         question_mark::QUESTION_MARK,
 653         ranges::ITERATOR_STEP_BY_ZERO,
 654         ranges::RANGE_MINUS_ONE,
 655         ranges::RANGE_ZIP_WITH_LEN,
 656         redundant_field_names::REDUNDANT_FIELD_NAMES,
 657         reference::DEREF_ADDROF,
 658         reference::REF_IN_DEREF,
 659         regex::INVALID_REGEX,
 660         regex::REGEX_MACRO,
 661         regex::TRIVIAL_REGEX,
 662         returns::LET_AND_RETURN,
 663         returns::NEEDLESS_RETURN,
 664         serde_api::SERDE_API_MISUSE,
 665         strings::STRING_LIT_AS_BYTES,
 666         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 667         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 668         swap::ALMOST_SWAPPED,
 669         swap::MANUAL_SWAP,
 670         temporary_assignment::TEMPORARY_ASSIGNMENT,
 671         transmute::CROSSPOINTER_TRANSMUTE,
 672         transmute::TRANSMUTE_BYTES_TO_STR,
 673         transmute::TRANSMUTE_INT_TO_BOOL,
 674         transmute::TRANSMUTE_INT_TO_CHAR,
 675         transmute::TRANSMUTE_INT_TO_FLOAT,
 676         transmute::TRANSMUTE_PTR_TO_PTR,
 677         transmute::TRANSMUTE_PTR_TO_REF,
 678         transmute::USELESS_TRANSMUTE,
 679         transmute::WRONG_TRANSMUTE,
 680         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 681         types::ABSURD_EXTREME_COMPARISONS,
 682         types::BORROWED_BOX,
 683         types::BOX_VEC,
 684         types::CAST_LOSSLESS,
 685         types::CAST_PTR_ALIGNMENT,
 686         types::CHAR_LIT_AS_U8,
 687         types::FN_TO_NUMERIC_CAST,
 688         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 689         types::IMPLICIT_HASHER,
 690         types::LET_UNIT_VALUE,
 691         types::OPTION_OPTION,
 692         types::TYPE_COMPLEXITY,
 693         types::UNIT_ARG,
 694         types::UNIT_CMP,
 695         types::UNNECESSARY_CAST,
 696         unicode::ZERO_WIDTH_SPACE,
 697         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 698         unused_io_amount::UNUSED_IO_AMOUNT,
 699         unused_label::UNUSED_LABEL,
 700         vec::USELESS_VEC,
 701         write::PRINT_LITERAL,
 702         write::PRINT_WITH_NEWLINE,
 703         write::PRINTLN_EMPTY_STRING,
 704         write::WRITE_LITERAL,
 705         write::WRITE_WITH_NEWLINE,
 706         write::WRITELN_EMPTY_STRING,
 707         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 708     ]);
 709
 710     reg.register_lint_group("clippy_style", vec![
 711         assign_ops::ASSIGN_OP_PATTERN,
 712         bit_mask::VERBOSE_BIT_MASK,
 713         blacklisted_name::BLACKLISTED_NAME,
 714         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 715         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 716         collapsible_if::COLLAPSIBLE_IF,
 717         const_static_lifetime::CONST_STATIC_LIFETIME,
 718         enum_variants::ENUM_VARIANT_NAMES,
 719         enum_variants::MODULE_INCEPTION,
 720         eq_op::OP_REF,
 721         eta_reduction::REDUNDANT_CLOSURE,
 722         excessive_precision::EXCESSIVE_PRECISION,
 723         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 724         formatting::SUSPICIOUS_ELSE_FORMATTING,
 725         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 726         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 727         len_zero::LEN_WITHOUT_IS_EMPTY,
 728         len_zero::LEN_ZERO,
 729         let_if_seq::USELESS_LET_IF_SEQ,
 730         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 731         literal_representation::LARGE_DIGIT_GROUPS,
 732         literal_representation::UNREADABLE_LITERAL,
 733         loops::EMPTY_LOOP,
 734         loops::EXPLICIT_INTO_ITER_LOOP,
 735         loops::EXPLICIT_ITER_LOOP,
 736         loops::FOR_KV_MAP,
 737         loops::NEEDLESS_RANGE_LOOP,
 738         loops::WHILE_LET_ON_ITERATOR,
 739         map_clone::MAP_CLONE,
 740         matches::MATCH_BOOL,
 741         matches::MATCH_OVERLAPPING_ARM,
 742         matches::MATCH_REF_PATS,
 743         matches::MATCH_WILD_ERR_ARM,
 744         matches::SINGLE_MATCH,
 745         methods::CHARS_LAST_CMP,
 746         methods::GET_UNWRAP,
 747         methods::ITER_CLONED_COLLECT,
 748         methods::ITER_SKIP_NEXT,
 749         methods::NEW_RET_NO_SELF,
 750         methods::OK_EXPECT,
 751         methods::OPTION_MAP_OR_NONE,
 752         methods::SHOULD_IMPLEMENT_TRAIT,
 753         methods::STRING_EXTEND_CHARS,
 754         methods::UNNECESSARY_FOLD,
 755         methods::WRONG_SELF_CONVENTION,
 756         misc::REDUNDANT_PATTERN,
 757         misc::TOPLEVEL_REF_ARG,
 758         misc::ZERO_PTR,
 759         misc_early::BUILTIN_TYPE_SHADOW,
 760         misc_early::DOUBLE_NEG,
 761         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 762         misc_early::MIXED_CASE_HEX_LITERALS,
 763         misc_early::UNNEEDED_FIELD_PATTERN,
 764         mut_reference::UNNECESSARY_MUT_PASSED,
 765         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 766         neg_multiply::NEG_MULTIPLY,
 767         new_without_default::NEW_WITHOUT_DEFAULT,
 768         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 769         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 770         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 771         ok_if_let::IF_LET_SOME_RESULT,
 772         panic_unimplemented::PANIC_PARAMS,
 773         ptr::CMP_NULL,
 774         ptr::PTR_ARG,
 775         question_mark::QUESTION_MARK,
 776         ranges::RANGE_MINUS_ONE,
 777         redundant_field_names::REDUNDANT_FIELD_NAMES,
 778         regex::REGEX_MACRO,
 779         regex::TRIVIAL_REGEX,
 780         returns::LET_AND_RETURN,
 781         returns::NEEDLESS_RETURN,
 782         strings::STRING_LIT_AS_BYTES,
 783         types::FN_TO_NUMERIC_CAST,
 784         types::IMPLICIT_HASHER,
 785         types::LET_UNIT_VALUE,
 786         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 787         write::PRINT_LITERAL,
 788         write::PRINT_WITH_NEWLINE,
 789         write::PRINTLN_EMPTY_STRING,
 790         write::WRITE_LITERAL,
 791         write::WRITE_WITH_NEWLINE,
 792         write::WRITELN_EMPTY_STRING,
 793     ]);
 794
 795     reg.register_lint_group("clippy_complexity", vec![
 796         assign_ops::MISREFACTORED_ASSIGN_OP,
 797         booleans::NONMINIMAL_BOOL,
 798         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 799         double_comparison::DOUBLE_COMPARISONS,
 800         double_parens::DOUBLE_PARENS,
 801         duration_subsec::DURATION_SUBSEC,
 802         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 803         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 804         explicit_write::EXPLICIT_WRITE,
 805         format::USELESS_FORMAT,
 806         functions::TOO_MANY_ARGUMENTS,
 807         identity_conversion::IDENTITY_CONVERSION,
 808         identity_op::IDENTITY_OP,
 809         int_plus_one::INT_PLUS_ONE,
 810         lifetimes::EXTRA_UNUSED_LIFETIMES,
 811         lifetimes::NEEDLESS_LIFETIMES,
 812         loops::EXPLICIT_COUNTER_LOOP,
 813         loops::MUT_RANGE_BOUND,
 814         loops::WHILE_LET_LOOP,
 815         map_unit_fn::OPTION_MAP_UNIT_FN,
 816         map_unit_fn::RESULT_MAP_UNIT_FN,
 817         matches::MATCH_AS_REF,
 818         methods::CHARS_NEXT_CMP,
 819         methods::CLONE_ON_COPY,
 820         methods::FILTER_NEXT,
 821         methods::SEARCH_IS_SOME,
 822         methods::USELESS_ASREF,
 823         misc::SHORT_CIRCUIT_STATEMENT,
 824         misc_early::REDUNDANT_CLOSURE_CALL,
 825         misc_early::ZERO_PREFIXED_LITERAL,
 826         needless_bool::BOOL_COMPARISON,
 827         needless_bool::NEEDLESS_BOOL,
 828         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 829         needless_update::NEEDLESS_UPDATE,
 830         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 831         no_effect::NO_EFFECT,
 832         no_effect::UNNECESSARY_OPERATION,
 833         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 834         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 835         precedence::PRECEDENCE,
 836         ranges::RANGE_ZIP_WITH_LEN,
 837         reference::DEREF_ADDROF,
 838         reference::REF_IN_DEREF,
 839         swap::MANUAL_SWAP,
 840         temporary_assignment::TEMPORARY_ASSIGNMENT,
 841         transmute::CROSSPOINTER_TRANSMUTE,
 842         transmute::TRANSMUTE_BYTES_TO_STR,
 843         transmute::TRANSMUTE_INT_TO_BOOL,
 844         transmute::TRANSMUTE_INT_TO_CHAR,
 845         transmute::TRANSMUTE_INT_TO_FLOAT,
 846         transmute::TRANSMUTE_PTR_TO_PTR,
 847         transmute::TRANSMUTE_PTR_TO_REF,
 848         transmute::USELESS_TRANSMUTE,
 849         types::BORROWED_BOX,
 850         types::CAST_LOSSLESS,
 851         types::CHAR_LIT_AS_U8,
 852         types::OPTION_OPTION,
 853         types::TYPE_COMPLEXITY,
 854         types::UNIT_ARG,
 855         types::UNNECESSARY_CAST,
 856         unused_label::UNUSED_LABEL,
 857         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 858     ]);
 859
 860     reg.register_lint_group("clippy_correctness", vec![
 861         approx_const::APPROX_CONSTANT,
 862         array_indexing::OUT_OF_BOUNDS_INDEXING,
 863         attrs::DEPRECATED_SEMVER,
 864         attrs::USELESS_ATTRIBUTE,
 865         bit_mask::BAD_BIT_MASK,
 866         bit_mask::INEFFECTIVE_BIT_MASK,
 867         booleans::LOGIC_BUG,
 868         copies::IF_SAME_THEN_ELSE,
 869         copies::IFS_SAME_COND,
 870         derive::DERIVE_HASH_XOR_EQ,
 871         drop_forget_ref::DROP_COPY,
 872         drop_forget_ref::DROP_REF,
 873         drop_forget_ref::FORGET_COPY,
 874         drop_forget_ref::FORGET_REF,
 875         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 876         eq_op::EQ_OP,
 877         erasing_op::ERASING_OP,
 878         formatting::POSSIBLE_MISSING_COMMA,
 879         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 880         infinite_iter::INFINITE_ITER,
 881         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 882         invalid_ref::INVALID_REF,
 883         loops::FOR_LOOP_OVER_OPTION,
 884         loops::FOR_LOOP_OVER_RESULT,
 885         loops::ITER_NEXT_LOOP,
 886         loops::NEVER_LOOP,
 887         loops::REVERSE_RANGE_LOOP,
 888         loops::WHILE_IMMUTABLE_CONDITION,
 889         methods::CLONE_DOUBLE_REF,
 890         methods::TEMPORARY_CSTRING_AS_PTR,
 891         minmax::MIN_MAX,
 892         misc::CMP_NAN,
 893         misc::FLOAT_CMP,
 894         misc::MODULO_ONE,
 895         open_options::NONSENSICAL_OPEN_OPTIONS,
 896         ptr::MUT_FROM_REF,
 897         ranges::ITERATOR_STEP_BY_ZERO,
 898         regex::INVALID_REGEX,
 899         serde_api::SERDE_API_MISUSE,
 900         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 901         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 902         swap::ALMOST_SWAPPED,
 903         transmute::WRONG_TRANSMUTE,
 904         types::ABSURD_EXTREME_COMPARISONS,
 905         types::CAST_PTR_ALIGNMENT,
 906         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 907         types::UNIT_CMP,
 908         unicode::ZERO_WIDTH_SPACE,
 909         unused_io_amount::UNUSED_IO_AMOUNT,
 910     ]);
 911
 912     reg.register_lint_group("clippy_perf", vec![
 913         bytecount::NAIVE_BYTECOUNT,
 914         entry::MAP_ENTRY,
 915         escape::BOXED_LOCAL,
 916         large_enum_variant::LARGE_ENUM_VARIANT,
 917         loops::MANUAL_MEMCPY,
 918         loops::UNUSED_COLLECT,
 919         methods::EXPECT_FUN_CALL,
 920         methods::ITER_NTH,
 921         methods::OR_FUN_CALL,
 922         methods::SINGLE_CHAR_PATTERN,
 923         misc::CMP_OWNED,
 924         mutex_atomic::MUTEX_ATOMIC,
 925         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 926         types::BOX_VEC,
 927         vec::USELESS_VEC,
 928     ]);
 929
 930     reg.register_lint_group("clippy_cargo", vec![
 931         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
 932     ]);
 933
 934     reg.register_lint_group("clippy_nursery", vec![
 935         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 936         fallible_impl_from::FALLIBLE_IMPL_FROM,
 937         mutex_atomic::MUTEX_INTEGER,
 938         needless_borrow::NEEDLESS_BORROW,
 939         ranges::RANGE_PLUS_ONE,
 940         unwrap::UNNECESSARY_UNWRAP,
 941     ]);
 942 }
 943
 944 // only exists to let the dogfood integration test works.
 945 // Don't run clippy as an executable directly
 946 #[allow(dead_code, print_stdout)]
 947 fn main() {
 948     panic!("Please use the cargo-clippy executable");
 949 }