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, 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 #![warn(rust_2018_idioms)]
  16
  17 use toml;
  18 use rustc_plugin;
  19
  20
  21 macro_rules! declare_clippy_lint {
  22     { pub $name:tt, style, $description:tt } => {
  23         declare_lint! { pub $name, Warn, $description }
  24     };
  25     { pub $name:tt, correctness, $description:tt } => {
  26         declare_lint! { pub $name, Deny, $description }
  27     };
  28     { pub $name:tt, complexity, $description:tt } => {
  29         declare_lint! { pub $name, Warn, $description }
  30     };
  31     { pub $name:tt, perf, $description:tt } => {
  32         declare_lint! { pub $name, Warn, $description }
  33     };
  34     { pub $name:tt, pedantic, $description:tt } => {
  35         declare_lint! { pub $name, Allow, $description }
  36     };
  37     { pub $name:tt, restriction, $description:tt } => {
  38         declare_lint! { pub $name, Allow, $description }
  39     };
  40     { pub $name:tt, cargo, $description:tt } => {
  41         declare_lint! { pub $name, Allow, $description }
  42     };
  43     { pub $name:tt, nursery, $description:tt } => {
  44         declare_lint! { pub $name, Allow, $description }
  45     };
  46     { pub $name:tt, internal, $description:tt } => {
  47         declare_lint! { pub $name, Allow, $description }
  48     };
  49     { pub $name:tt, internal_warn, $description:tt } => {
  50         declare_lint! { pub $name, Warn, $description }
  51     };
  52 }
  53
  54 pub mod consts;
  55 #[macro_use]
  56 pub mod utils;
  57
  58 // begin lints modules, do not remove this comment, it’s used in `update_lints`
  59 pub mod approx_const;
  60 pub mod arithmetic;
  61 pub mod assign_ops;
  62 pub mod attrs;
  63 pub mod bit_mask;
  64 pub mod blacklisted_name;
  65 pub mod block_in_if_condition;
  66 pub mod booleans;
  67 pub mod bytecount;
  68 pub mod collapsible_if;
  69 pub mod const_static_lifetime;
  70 pub mod copies;
  71 pub mod cyclomatic_complexity;
  72 pub mod default_trait_access;
  73 pub mod derive;
  74 pub mod doc;
  75 pub mod double_comparison;
  76 pub mod double_parens;
  77 pub mod drop_forget_ref;
  78 pub mod duration_subsec;
  79 pub mod else_if_without_else;
  80 pub mod empty_enum;
  81 pub mod entry;
  82 pub mod enum_clike;
  83 pub mod enum_glob_use;
  84 pub mod enum_variants;
  85 pub mod eq_op;
  86 pub mod erasing_op;
  87 pub mod escape;
  88 pub mod eta_reduction;
  89 pub mod eval_order_dependence;
  90 pub mod excessive_precision;
  91 pub mod explicit_write;
  92 pub mod fallible_impl_from;
  93 pub mod format;
  94 pub mod formatting;
  95 pub mod functions;
  96 pub mod identity_conversion;
  97 pub mod identity_op;
  98 pub mod if_let_redundant_pattern_matching;
  99 pub mod if_not_else;
 100 pub mod indexing_slicing;
 101 pub mod infallible_destructuring_match;
 102 pub mod infinite_iter;
 103 pub mod inherent_impl;
 104 pub mod inline_fn_without_body;
 105 pub mod int_plus_one;
 106 pub mod invalid_ref;
 107 pub mod items_after_statements;
 108 pub mod large_enum_variant;
 109 pub mod len_zero;
 110 pub mod let_if_seq;
 111 pub mod lifetimes;
 112 pub mod literal_representation;
 113 pub mod loops;
 114 pub mod map_clone;
 115 pub mod map_unit_fn;
 116 pub mod matches;
 117 pub mod mem_forget;
 118 pub mod methods;
 119 pub mod minmax;
 120 pub mod misc;
 121 pub mod misc_early;
 122 pub mod missing_doc;
 123 pub mod missing_inline;
 124 pub mod multiple_crate_versions;
 125 pub mod mut_mut;
 126 pub mod mut_reference;
 127 pub mod mutex_atomic;
 128 pub mod needless_bool;
 129 pub mod needless_borrow;
 130 pub mod needless_borrowed_ref;
 131 pub mod needless_continue;
 132 pub mod needless_pass_by_value;
 133 pub mod needless_update;
 134 pub mod neg_cmp_op_on_partial_ord;
 135 pub mod neg_multiply;
 136 pub mod new_without_default;
 137 pub mod no_effect;
 138 pub mod non_copy_const;
 139 pub mod non_expressive_names;
 140 pub mod ok_if_let;
 141 pub mod open_options;
 142 pub mod overflow_check_conditional;
 143 pub mod panic_unimplemented;
 144 pub mod partialeq_ne_impl;
 145 pub mod precedence;
 146 pub mod ptr;
 147 pub mod question_mark;
 148 pub mod ranges;
 149 pub mod redundant_field_names;
 150 pub mod reference;
 151 pub mod regex;
 152 pub mod replace_consts;
 153 pub mod returns;
 154 pub mod serde_api;
 155 pub mod shadow;
 156 pub mod strings;
 157 pub mod suspicious_trait_impl;
 158 pub mod swap;
 159 pub mod temporary_assignment;
 160 pub mod transmute;
 161 pub mod trivially_copy_pass_by_ref;
 162 pub mod types;
 163 pub mod unicode;
 164 pub mod unsafe_removed_from_name;
 165 pub mod unused_io_amount;
 166 pub mod unused_label;
 167 pub mod unwrap;
 168 pub mod use_self;
 169 pub mod vec;
 170 pub mod write;
 171 pub mod zero_div_zero;
 172 // end lints modules, do not remove this comment, it’s used in `update_lints`
 173
 174 mod reexport {
 175     crate use syntax::ast::{Name, NodeId};
 176 }
 177
 178 #[cfg_attr(rustfmt, rustfmt_skip)]
 179 pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
 180     let conf = match utils::conf::file_from_args(reg.args()) {
 181         Ok(file_name) => {
 182             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 183             // do not require the file to exist
 184             let file_name = if let Some(file_name) = file_name {
 185                 Some(file_name)
 186             } else {
 187                 match utils::conf::lookup_conf_file() {
 188                     Ok(path) => path,
 189                     Err(error) => {
 190                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 191                         None
 192                     }
 193                 }
 194             };
 195
 196             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 197                 reg.sess
 198                     .local_crate_source_file
 199                     .as_ref()
 200                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 201                     .unwrap_or_default()
 202                     .join(file_name)
 203             } else {
 204                 file_name
 205             });
 206
 207             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 208
 209             // all conf errors are non-fatal, we just use the default conf in case of error
 210             for error in errors {
 211                 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();
 212             }
 213
 214             conf
 215         }
 216         Err((err, span)) => {
 217             reg.sess.struct_span_err(span, err)
 218                     .span_note(span, "Clippy will use default configuration")
 219                     .emit();
 220             toml::from_str("").expect("we never error on empty config files")
 221         }
 222     };
 223
 224     let mut store = reg.sess.lint_store.borrow_mut();
 225     store.register_removed(
 226         "should_assert_eq",
 227         "`assert!()` will be more flexible with RFC 2011",
 228     );
 229     store.register_removed(
 230         "extend_from_slice",
 231         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 232     );
 233     store.register_removed(
 234         "range_step_by_zero",
 235         "`iterator.step_by(0)` panics nowadays",
 236     );
 237     store.register_removed(
 238         "unstable_as_slice",
 239         "`Vec::as_slice` has been stabilized in 1.7",
 240     );
 241     store.register_removed(
 242         "unstable_as_mut_slice",
 243         "`Vec::as_mut_slice` has been stabilized in 1.7",
 244     );
 245     store.register_removed(
 246         "str_to_string",
 247         "using `str::to_string` is common even today and specialization will likely happen soon",
 248     );
 249     store.register_removed(
 250         "string_to_string",
 251         "using `string::to_string` is common even today and specialization will likely happen soon",
 252     );
 253     store.register_removed(
 254         "misaligned_transmute",
 255         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 256     );
 257     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 258
 259     reg.register_late_lint_pass(box serde_api::Serde);
 260     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 261     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 262     reg.register_late_lint_pass(box utils::inspector::Pass);
 263     reg.register_late_lint_pass(box utils::author::Pass);
 264     reg.register_late_lint_pass(box types::TypePass);
 265     reg.register_late_lint_pass(box booleans::NonminimalBool);
 266     reg.register_late_lint_pass(box eq_op::EqOp);
 267     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 268     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 269     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 270     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 271     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 272     reg.register_late_lint_pass(box ptr::PointerPass);
 273     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 274     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 275     reg.register_late_lint_pass(box approx_const::Pass);
 276     reg.register_late_lint_pass(box misc::Pass);
 277     reg.register_early_lint_pass(box precedence::Precedence);
 278     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 279     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 280     reg.register_late_lint_pass(box identity_op::IdentityOp);
 281     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 282     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 283     reg.register_late_lint_pass(box mut_mut::MutMut);
 284     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 285     reg.register_late_lint_pass(box len_zero::LenZero);
 286     reg.register_late_lint_pass(box attrs::AttrPass);
 287     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 288     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 289     reg.register_late_lint_pass(box unicode::Unicode);
 290     reg.register_late_lint_pass(box strings::StringAdd);
 291     reg.register_early_lint_pass(box returns::ReturnPass);
 292     reg.register_late_lint_pass(box methods::Pass);
 293     reg.register_late_lint_pass(box shadow::Pass);
 294     reg.register_late_lint_pass(box types::LetPass);
 295     reg.register_late_lint_pass(box types::UnitCmp);
 296     reg.register_late_lint_pass(box loops::Pass);
 297     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 298     reg.register_late_lint_pass(box entry::HashMapLint);
 299     reg.register_late_lint_pass(box ranges::Pass);
 300     reg.register_late_lint_pass(box types::CastPass);
 301     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 302     reg.register_late_lint_pass(box matches::MatchPass);
 303     reg.register_late_lint_pass(box minmax::MinMaxPass);
 304     reg.register_late_lint_pass(box open_options::NonSensical);
 305     reg.register_late_lint_pass(box zero_div_zero::Pass);
 306     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 307     reg.register_late_lint_pass(box needless_update::Pass);
 308     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 309     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 310     reg.register_late_lint_pass(box no_effect::Pass);
 311     reg.register_late_lint_pass(box map_clone::Pass);
 312     reg.register_late_lint_pass(box temporary_assignment::Pass);
 313     reg.register_late_lint_pass(box transmute::Transmute);
 314     reg.register_late_lint_pass(
 315         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 316     );
 317     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 318     reg.register_early_lint_pass(box misc_early::MiscEarly);
 319     reg.register_late_lint_pass(box panic_unimplemented::Pass);
 320     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 321     reg.register_late_lint_pass(box derive::Derive);
 322     reg.register_late_lint_pass(box types::CharLitAsU8);
 323     reg.register_late_lint_pass(box write::Pass);
 324     reg.register_late_lint_pass(box vec::Pass);
 325     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 326         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 327     });
 328     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 329     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 330     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 331     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 332     reg.register_late_lint_pass(box regex::Pass::default());
 333     reg.register_late_lint_pass(box copies::CopyAndPaste);
 334     reg.register_late_lint_pass(box format::Pass);
 335     reg.register_early_lint_pass(box formatting::Formatting);
 336     reg.register_late_lint_pass(box swap::Swap);
 337     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 338     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 339     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 340     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 341     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 342     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 343     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 344     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 345     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 346     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 347     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 348     reg.register_late_lint_pass(box mem_forget::MemForget);
 349     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 350     reg.register_late_lint_pass(box assign_ops::AssignOps);
 351     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 352     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 353     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 354     reg.register_late_lint_pass(box missing_inline::MissingInline);
 355     reg.register_late_lint_pass(box ok_if_let::Pass);
 356     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 357     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 358     reg.register_early_lint_pass(box reference::Pass);
 359     reg.register_early_lint_pass(box reference::DerefPass);
 360     reg.register_early_lint_pass(box double_parens::DoubleParens);
 361     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 362     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 363     reg.register_late_lint_pass(box explicit_write::Pass);
 364     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 365     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 366             conf.trivial_copy_size_limit,
 367             &reg.sess.target,
 368     ));
 369     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 370     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 371             conf.literal_representation_threshold
 372     ));
 373     reg.register_late_lint_pass(box use_self::UseSelf);
 374     reg.register_late_lint_pass(box bytecount::ByteCount);
 375     reg.register_late_lint_pass(box infinite_iter::Pass);
 376     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 377     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 378     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 379     reg.register_late_lint_pass(box types::ImplicitHasher);
 380     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 381     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 382     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 383     reg.register_late_lint_pass(box types::UnitArg);
 384     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 385     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 386     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 387     reg.register_late_lint_pass(box redundant_field_names::RedundantFieldNames);
 388     reg.register_early_lint_pass(box multiple_crate_versions::Pass);
 389     reg.register_late_lint_pass(box map_unit_fn::Pass);
 390     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 391     reg.register_late_lint_pass(box inherent_impl::Pass::default());
 392     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 393     reg.register_late_lint_pass(box unwrap::Pass);
 394     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 395     reg.register_late_lint_pass(box default_trait_access::DefaultTraitAccess);
 396     reg.register_late_lint_pass(box indexing_slicing::IndexingSlicing);
 397     reg.register_late_lint_pass(box non_copy_const::NonCopyConst);
 398
 399     reg.register_lint_group("clippy_restriction", vec![
 400         arithmetic::FLOAT_ARITHMETIC,
 401         arithmetic::INTEGER_ARITHMETIC,
 402         assign_ops::ASSIGN_OPS,
 403         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 404         inherent_impl::MULTIPLE_INHERENT_IMPL,
 405         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 406         mem_forget::MEM_FORGET,
 407         methods::CLONE_ON_REF_PTR,
 408         methods::OPTION_UNWRAP_USED,
 409         methods::RESULT_UNWRAP_USED,
 410         methods::WRONG_PUB_SELF_CONVENTION,
 411         misc::FLOAT_CMP_CONST,
 412         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 413         missing_inline::MISSING_INLINE_IN_PUBLIC_ITEMS,
 414         panic_unimplemented::UNIMPLEMENTED,
 415         shadow::SHADOW_REUSE,
 416         shadow::SHADOW_SAME,
 417         shadow::SHADOW_UNRELATED,
 418         strings::STRING_ADD,
 419         write::PRINT_STDOUT,
 420         write::USE_DEBUG,
 421     ]);
 422
 423     reg.register_lint_group("clippy_pedantic", vec![
 424         attrs::INLINE_ALWAYS,
 425         copies::MATCH_SAME_ARMS,
 426         default_trait_access::DEFAULT_TRAIT_ACCESS,
 427         derive::EXPL_IMPL_CLONE_ON_COPY,
 428         doc::DOC_MARKDOWN,
 429         empty_enum::EMPTY_ENUM,
 430         enum_glob_use::ENUM_GLOB_USE,
 431         enum_variants::PUB_ENUM_VARIANT_NAMES,
 432         enum_variants::STUTTER,
 433         if_not_else::IF_NOT_ELSE,
 434         indexing_slicing::INDEXING_SLICING,
 435         infinite_iter::MAYBE_INFINITE_ITER,
 436         items_after_statements::ITEMS_AFTER_STATEMENTS,
 437         matches::SINGLE_MATCH_ELSE,
 438         methods::FILTER_MAP,
 439         methods::OPTION_MAP_UNWRAP_OR,
 440         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 441         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 442         misc::USED_UNDERSCORE_BINDING,
 443         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 444         mut_mut::MUT_MUT,
 445         needless_continue::NEEDLESS_CONTINUE,
 446         non_expressive_names::SIMILAR_NAMES,
 447         replace_consts::REPLACE_CONSTS,
 448         strings::STRING_ADD_ASSIGN,
 449         types::CAST_POSSIBLE_TRUNCATION,
 450         types::CAST_POSSIBLE_WRAP,
 451         types::CAST_PRECISION_LOSS,
 452         types::CAST_SIGN_LOSS,
 453         types::INVALID_UPCAST_COMPARISONS,
 454         types::LINKEDLIST,
 455         unicode::NON_ASCII_LITERAL,
 456         unicode::UNICODE_NOT_NFC,
 457         use_self::USE_SELF,
 458     ]);
 459
 460     reg.register_lint_group("clippy_internal", vec![
 461         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 462         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 463     ]);
 464
 465     reg.register_lint_group("clippy", vec![
 466         approx_const::APPROX_CONSTANT,
 467         assign_ops::ASSIGN_OP_PATTERN,
 468         assign_ops::MISREFACTORED_ASSIGN_OP,
 469         attrs::DEPRECATED_SEMVER,
 470         attrs::USELESS_ATTRIBUTE,
 471         bit_mask::BAD_BIT_MASK,
 472         bit_mask::INEFFECTIVE_BIT_MASK,
 473         bit_mask::VERBOSE_BIT_MASK,
 474         blacklisted_name::BLACKLISTED_NAME,
 475         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 476         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 477         booleans::LOGIC_BUG,
 478         booleans::NONMINIMAL_BOOL,
 479         bytecount::NAIVE_BYTECOUNT,
 480         collapsible_if::COLLAPSIBLE_IF,
 481         const_static_lifetime::CONST_STATIC_LIFETIME,
 482         copies::IF_SAME_THEN_ELSE,
 483         copies::IFS_SAME_COND,
 484         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 485         derive::DERIVE_HASH_XOR_EQ,
 486         double_comparison::DOUBLE_COMPARISONS,
 487         double_parens::DOUBLE_PARENS,
 488         drop_forget_ref::DROP_COPY,
 489         drop_forget_ref::DROP_REF,
 490         drop_forget_ref::FORGET_COPY,
 491         drop_forget_ref::FORGET_REF,
 492         duration_subsec::DURATION_SUBSEC,
 493         entry::MAP_ENTRY,
 494         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 495         enum_variants::ENUM_VARIANT_NAMES,
 496         enum_variants::MODULE_INCEPTION,
 497         eq_op::EQ_OP,
 498         eq_op::OP_REF,
 499         erasing_op::ERASING_OP,
 500         escape::BOXED_LOCAL,
 501         eta_reduction::REDUNDANT_CLOSURE,
 502         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 503         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 504         excessive_precision::EXCESSIVE_PRECISION,
 505         explicit_write::EXPLICIT_WRITE,
 506         format::USELESS_FORMAT,
 507         formatting::POSSIBLE_MISSING_COMMA,
 508         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 509         formatting::SUSPICIOUS_ELSE_FORMATTING,
 510         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 511         functions::TOO_MANY_ARGUMENTS,
 512         identity_conversion::IDENTITY_CONVERSION,
 513         identity_op::IDENTITY_OP,
 514         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 515         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 516         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 517         infinite_iter::INFINITE_ITER,
 518         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 519         int_plus_one::INT_PLUS_ONE,
 520         invalid_ref::INVALID_REF,
 521         large_enum_variant::LARGE_ENUM_VARIANT,
 522         len_zero::LEN_WITHOUT_IS_EMPTY,
 523         len_zero::LEN_ZERO,
 524         let_if_seq::USELESS_LET_IF_SEQ,
 525         lifetimes::EXTRA_UNUSED_LIFETIMES,
 526         lifetimes::NEEDLESS_LIFETIMES,
 527         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 528         literal_representation::LARGE_DIGIT_GROUPS,
 529         literal_representation::UNREADABLE_LITERAL,
 530         loops::EMPTY_LOOP,
 531         loops::EXPLICIT_COUNTER_LOOP,
 532         loops::EXPLICIT_INTO_ITER_LOOP,
 533         loops::EXPLICIT_ITER_LOOP,
 534         loops::FOR_KV_MAP,
 535         loops::FOR_LOOP_OVER_OPTION,
 536         loops::FOR_LOOP_OVER_RESULT,
 537         loops::ITER_NEXT_LOOP,
 538         loops::MANUAL_MEMCPY,
 539         loops::MUT_RANGE_BOUND,
 540         loops::NEEDLESS_RANGE_LOOP,
 541         loops::NEVER_LOOP,
 542         loops::REVERSE_RANGE_LOOP,
 543         loops::UNUSED_COLLECT,
 544         loops::WHILE_IMMUTABLE_CONDITION,
 545         loops::WHILE_LET_LOOP,
 546         loops::WHILE_LET_ON_ITERATOR,
 547         map_clone::MAP_CLONE,
 548         map_unit_fn::OPTION_MAP_UNIT_FN,
 549         map_unit_fn::RESULT_MAP_UNIT_FN,
 550         matches::MATCH_AS_REF,
 551         matches::MATCH_BOOL,
 552         matches::MATCH_OVERLAPPING_ARM,
 553         matches::MATCH_REF_PATS,
 554         matches::MATCH_WILD_ERR_ARM,
 555         matches::SINGLE_MATCH,
 556         methods::CHARS_LAST_CMP,
 557         methods::CHARS_NEXT_CMP,
 558         methods::CLONE_DOUBLE_REF,
 559         methods::CLONE_ON_COPY,
 560         methods::EXPECT_FUN_CALL,
 561         methods::FILTER_NEXT,
 562         methods::GET_UNWRAP,
 563         methods::ITER_CLONED_COLLECT,
 564         methods::ITER_NTH,
 565         methods::ITER_SKIP_NEXT,
 566         methods::NEW_RET_NO_SELF,
 567         methods::OK_EXPECT,
 568         methods::OPTION_MAP_OR_NONE,
 569         methods::OR_FUN_CALL,
 570         methods::SEARCH_IS_SOME,
 571         methods::SHOULD_IMPLEMENT_TRAIT,
 572         methods::SINGLE_CHAR_PATTERN,
 573         methods::STRING_EXTEND_CHARS,
 574         methods::TEMPORARY_CSTRING_AS_PTR,
 575         methods::UNNECESSARY_FOLD,
 576         methods::USELESS_ASREF,
 577         methods::WRONG_SELF_CONVENTION,
 578         minmax::MIN_MAX,
 579         misc::CMP_NAN,
 580         misc::CMP_OWNED,
 581         misc::FLOAT_CMP,
 582         misc::MODULO_ONE,
 583         misc::REDUNDANT_PATTERN,
 584         misc::SHORT_CIRCUIT_STATEMENT,
 585         misc::TOPLEVEL_REF_ARG,
 586         misc::ZERO_PTR,
 587         misc_early::BUILTIN_TYPE_SHADOW,
 588         misc_early::DOUBLE_NEG,
 589         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 590         misc_early::MIXED_CASE_HEX_LITERALS,
 591         misc_early::REDUNDANT_CLOSURE_CALL,
 592         misc_early::UNNEEDED_FIELD_PATTERN,
 593         misc_early::ZERO_PREFIXED_LITERAL,
 594         mut_reference::UNNECESSARY_MUT_PASSED,
 595         mutex_atomic::MUTEX_ATOMIC,
 596         needless_bool::BOOL_COMPARISON,
 597         needless_bool::NEEDLESS_BOOL,
 598         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 599         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 600         needless_update::NEEDLESS_UPDATE,
 601         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 602         neg_multiply::NEG_MULTIPLY,
 603         new_without_default::NEW_WITHOUT_DEFAULT,
 604         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 605         no_effect::NO_EFFECT,
 606         no_effect::UNNECESSARY_OPERATION,
 607         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 608         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 609         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 610         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 611         ok_if_let::IF_LET_SOME_RESULT,
 612         open_options::NONSENSICAL_OPEN_OPTIONS,
 613         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 614         panic_unimplemented::PANIC_PARAMS,
 615         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 616         precedence::PRECEDENCE,
 617         ptr::CMP_NULL,
 618         ptr::MUT_FROM_REF,
 619         ptr::PTR_ARG,
 620         question_mark::QUESTION_MARK,
 621         ranges::ITERATOR_STEP_BY_ZERO,
 622         ranges::RANGE_MINUS_ONE,
 623         ranges::RANGE_ZIP_WITH_LEN,
 624         redundant_field_names::REDUNDANT_FIELD_NAMES,
 625         reference::DEREF_ADDROF,
 626         reference::REF_IN_DEREF,
 627         regex::INVALID_REGEX,
 628         regex::REGEX_MACRO,
 629         regex::TRIVIAL_REGEX,
 630         returns::LET_AND_RETURN,
 631         returns::NEEDLESS_RETURN,
 632         serde_api::SERDE_API_MISUSE,
 633         strings::STRING_LIT_AS_BYTES,
 634         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 635         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 636         swap::ALMOST_SWAPPED,
 637         swap::MANUAL_SWAP,
 638         temporary_assignment::TEMPORARY_ASSIGNMENT,
 639         transmute::CROSSPOINTER_TRANSMUTE,
 640         transmute::TRANSMUTE_BYTES_TO_STR,
 641         transmute::TRANSMUTE_INT_TO_BOOL,
 642         transmute::TRANSMUTE_INT_TO_CHAR,
 643         transmute::TRANSMUTE_INT_TO_FLOAT,
 644         transmute::TRANSMUTE_PTR_TO_PTR,
 645         transmute::TRANSMUTE_PTR_TO_REF,
 646         transmute::USELESS_TRANSMUTE,
 647         transmute::WRONG_TRANSMUTE,
 648         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 649         types::ABSURD_EXTREME_COMPARISONS,
 650         types::BORROWED_BOX,
 651         types::BOX_VEC,
 652         types::CAST_LOSSLESS,
 653         types::CAST_PTR_ALIGNMENT,
 654         types::CHAR_LIT_AS_U8,
 655         types::FN_TO_NUMERIC_CAST,
 656         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 657         types::IMPLICIT_HASHER,
 658         types::LET_UNIT_VALUE,
 659         types::OPTION_OPTION,
 660         types::TYPE_COMPLEXITY,
 661         types::UNIT_ARG,
 662         types::UNIT_CMP,
 663         types::UNNECESSARY_CAST,
 664         unicode::ZERO_WIDTH_SPACE,
 665         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 666         unused_io_amount::UNUSED_IO_AMOUNT,
 667         unused_label::UNUSED_LABEL,
 668         vec::USELESS_VEC,
 669         write::PRINT_LITERAL,
 670         write::PRINT_WITH_NEWLINE,
 671         write::PRINTLN_EMPTY_STRING,
 672         write::WRITE_LITERAL,
 673         write::WRITE_WITH_NEWLINE,
 674         write::WRITELN_EMPTY_STRING,
 675         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 676     ]);
 677
 678     reg.register_lint_group("clippy_style", vec![
 679         assign_ops::ASSIGN_OP_PATTERN,
 680         bit_mask::VERBOSE_BIT_MASK,
 681         blacklisted_name::BLACKLISTED_NAME,
 682         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 683         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 684         collapsible_if::COLLAPSIBLE_IF,
 685         const_static_lifetime::CONST_STATIC_LIFETIME,
 686         enum_variants::ENUM_VARIANT_NAMES,
 687         enum_variants::MODULE_INCEPTION,
 688         eq_op::OP_REF,
 689         eta_reduction::REDUNDANT_CLOSURE,
 690         excessive_precision::EXCESSIVE_PRECISION,
 691         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 692         formatting::SUSPICIOUS_ELSE_FORMATTING,
 693         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 694         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 695         len_zero::LEN_WITHOUT_IS_EMPTY,
 696         len_zero::LEN_ZERO,
 697         let_if_seq::USELESS_LET_IF_SEQ,
 698         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 699         literal_representation::LARGE_DIGIT_GROUPS,
 700         literal_representation::UNREADABLE_LITERAL,
 701         loops::EMPTY_LOOP,
 702         loops::EXPLICIT_INTO_ITER_LOOP,
 703         loops::EXPLICIT_ITER_LOOP,
 704         loops::FOR_KV_MAP,
 705         loops::NEEDLESS_RANGE_LOOP,
 706         loops::WHILE_LET_ON_ITERATOR,
 707         map_clone::MAP_CLONE,
 708         matches::MATCH_BOOL,
 709         matches::MATCH_OVERLAPPING_ARM,
 710         matches::MATCH_REF_PATS,
 711         matches::MATCH_WILD_ERR_ARM,
 712         matches::SINGLE_MATCH,
 713         methods::CHARS_LAST_CMP,
 714         methods::GET_UNWRAP,
 715         methods::ITER_CLONED_COLLECT,
 716         methods::ITER_SKIP_NEXT,
 717         methods::NEW_RET_NO_SELF,
 718         methods::OK_EXPECT,
 719         methods::OPTION_MAP_OR_NONE,
 720         methods::SHOULD_IMPLEMENT_TRAIT,
 721         methods::STRING_EXTEND_CHARS,
 722         methods::UNNECESSARY_FOLD,
 723         methods::WRONG_SELF_CONVENTION,
 724         misc::REDUNDANT_PATTERN,
 725         misc::TOPLEVEL_REF_ARG,
 726         misc::ZERO_PTR,
 727         misc_early::BUILTIN_TYPE_SHADOW,
 728         misc_early::DOUBLE_NEG,
 729         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 730         misc_early::MIXED_CASE_HEX_LITERALS,
 731         misc_early::UNNEEDED_FIELD_PATTERN,
 732         mut_reference::UNNECESSARY_MUT_PASSED,
 733         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 734         neg_multiply::NEG_MULTIPLY,
 735         new_without_default::NEW_WITHOUT_DEFAULT,
 736         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 737         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 738         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 739         ok_if_let::IF_LET_SOME_RESULT,
 740         panic_unimplemented::PANIC_PARAMS,
 741         ptr::CMP_NULL,
 742         ptr::PTR_ARG,
 743         question_mark::QUESTION_MARK,
 744         ranges::RANGE_MINUS_ONE,
 745         redundant_field_names::REDUNDANT_FIELD_NAMES,
 746         regex::REGEX_MACRO,
 747         regex::TRIVIAL_REGEX,
 748         returns::LET_AND_RETURN,
 749         returns::NEEDLESS_RETURN,
 750         strings::STRING_LIT_AS_BYTES,
 751         types::FN_TO_NUMERIC_CAST,
 752         types::IMPLICIT_HASHER,
 753         types::LET_UNIT_VALUE,
 754         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 755         write::PRINT_LITERAL,
 756         write::PRINT_WITH_NEWLINE,
 757         write::PRINTLN_EMPTY_STRING,
 758         write::WRITE_LITERAL,
 759         write::WRITE_WITH_NEWLINE,
 760         write::WRITELN_EMPTY_STRING,
 761     ]);
 762
 763     reg.register_lint_group("clippy_complexity", vec![
 764         assign_ops::MISREFACTORED_ASSIGN_OP,
 765         booleans::NONMINIMAL_BOOL,
 766         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 767         double_comparison::DOUBLE_COMPARISONS,
 768         double_parens::DOUBLE_PARENS,
 769         duration_subsec::DURATION_SUBSEC,
 770         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 771         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 772         explicit_write::EXPLICIT_WRITE,
 773         format::USELESS_FORMAT,
 774         functions::TOO_MANY_ARGUMENTS,
 775         identity_conversion::IDENTITY_CONVERSION,
 776         identity_op::IDENTITY_OP,
 777         int_plus_one::INT_PLUS_ONE,
 778         lifetimes::EXTRA_UNUSED_LIFETIMES,
 779         lifetimes::NEEDLESS_LIFETIMES,
 780         loops::EXPLICIT_COUNTER_LOOP,
 781         loops::MUT_RANGE_BOUND,
 782         loops::WHILE_LET_LOOP,
 783         map_unit_fn::OPTION_MAP_UNIT_FN,
 784         map_unit_fn::RESULT_MAP_UNIT_FN,
 785         matches::MATCH_AS_REF,
 786         methods::CHARS_NEXT_CMP,
 787         methods::CLONE_ON_COPY,
 788         methods::FILTER_NEXT,
 789         methods::SEARCH_IS_SOME,
 790         methods::USELESS_ASREF,
 791         misc::SHORT_CIRCUIT_STATEMENT,
 792         misc_early::REDUNDANT_CLOSURE_CALL,
 793         misc_early::ZERO_PREFIXED_LITERAL,
 794         needless_bool::BOOL_COMPARISON,
 795         needless_bool::NEEDLESS_BOOL,
 796         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 797         needless_update::NEEDLESS_UPDATE,
 798         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 799         no_effect::NO_EFFECT,
 800         no_effect::UNNECESSARY_OPERATION,
 801         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 802         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 803         precedence::PRECEDENCE,
 804         ranges::RANGE_ZIP_WITH_LEN,
 805         reference::DEREF_ADDROF,
 806         reference::REF_IN_DEREF,
 807         swap::MANUAL_SWAP,
 808         temporary_assignment::TEMPORARY_ASSIGNMENT,
 809         transmute::CROSSPOINTER_TRANSMUTE,
 810         transmute::TRANSMUTE_BYTES_TO_STR,
 811         transmute::TRANSMUTE_INT_TO_BOOL,
 812         transmute::TRANSMUTE_INT_TO_CHAR,
 813         transmute::TRANSMUTE_INT_TO_FLOAT,
 814         transmute::TRANSMUTE_PTR_TO_PTR,
 815         transmute::TRANSMUTE_PTR_TO_REF,
 816         transmute::USELESS_TRANSMUTE,
 817         types::BORROWED_BOX,
 818         types::CAST_LOSSLESS,
 819         types::CHAR_LIT_AS_U8,
 820         types::OPTION_OPTION,
 821         types::TYPE_COMPLEXITY,
 822         types::UNIT_ARG,
 823         types::UNNECESSARY_CAST,
 824         unused_label::UNUSED_LABEL,
 825         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 826     ]);
 827
 828     reg.register_lint_group("clippy_correctness", vec![
 829         approx_const::APPROX_CONSTANT,
 830         attrs::DEPRECATED_SEMVER,
 831         attrs::USELESS_ATTRIBUTE,
 832         bit_mask::BAD_BIT_MASK,
 833         bit_mask::INEFFECTIVE_BIT_MASK,
 834         booleans::LOGIC_BUG,
 835         copies::IF_SAME_THEN_ELSE,
 836         copies::IFS_SAME_COND,
 837         derive::DERIVE_HASH_XOR_EQ,
 838         drop_forget_ref::DROP_COPY,
 839         drop_forget_ref::DROP_REF,
 840         drop_forget_ref::FORGET_COPY,
 841         drop_forget_ref::FORGET_REF,
 842         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 843         eq_op::EQ_OP,
 844         erasing_op::ERASING_OP,
 845         formatting::POSSIBLE_MISSING_COMMA,
 846         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 847         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 848         infinite_iter::INFINITE_ITER,
 849         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 850         invalid_ref::INVALID_REF,
 851         loops::FOR_LOOP_OVER_OPTION,
 852         loops::FOR_LOOP_OVER_RESULT,
 853         loops::ITER_NEXT_LOOP,
 854         loops::NEVER_LOOP,
 855         loops::REVERSE_RANGE_LOOP,
 856         loops::WHILE_IMMUTABLE_CONDITION,
 857         methods::CLONE_DOUBLE_REF,
 858         methods::TEMPORARY_CSTRING_AS_PTR,
 859         minmax::MIN_MAX,
 860         misc::CMP_NAN,
 861         misc::FLOAT_CMP,
 862         misc::MODULO_ONE,
 863         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 864         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 865         open_options::NONSENSICAL_OPEN_OPTIONS,
 866         ptr::MUT_FROM_REF,
 867         ranges::ITERATOR_STEP_BY_ZERO,
 868         regex::INVALID_REGEX,
 869         serde_api::SERDE_API_MISUSE,
 870         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 871         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 872         swap::ALMOST_SWAPPED,
 873         transmute::WRONG_TRANSMUTE,
 874         types::ABSURD_EXTREME_COMPARISONS,
 875         types::CAST_PTR_ALIGNMENT,
 876         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 877         types::UNIT_CMP,
 878         unicode::ZERO_WIDTH_SPACE,
 879         unused_io_amount::UNUSED_IO_AMOUNT,
 880     ]);
 881
 882     reg.register_lint_group("clippy_perf", vec![
 883         bytecount::NAIVE_BYTECOUNT,
 884         entry::MAP_ENTRY,
 885         escape::BOXED_LOCAL,
 886         large_enum_variant::LARGE_ENUM_VARIANT,
 887         loops::MANUAL_MEMCPY,
 888         loops::UNUSED_COLLECT,
 889         methods::EXPECT_FUN_CALL,
 890         methods::ITER_NTH,
 891         methods::OR_FUN_CALL,
 892         methods::SINGLE_CHAR_PATTERN,
 893         misc::CMP_OWNED,
 894         mutex_atomic::MUTEX_ATOMIC,
 895         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 896         types::BOX_VEC,
 897         vec::USELESS_VEC,
 898     ]);
 899
 900     reg.register_lint_group("clippy_cargo", vec![
 901         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
 902     ]);
 903
 904     reg.register_lint_group("clippy_nursery", vec![
 905         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 906         fallible_impl_from::FALLIBLE_IMPL_FROM,
 907         mutex_atomic::MUTEX_INTEGER,
 908         needless_borrow::NEEDLESS_BORROW,
 909         ranges::RANGE_PLUS_ONE,
 910         unwrap::PANICKING_UNWRAP,
 911         unwrap::UNNECESSARY_UNWRAP,
 912     ]);
 913 }
 914
 915 // only exists to let the dogfood integration test works.
 916 // Don't run clippy as an executable directly
 917 #[allow(dead_code, print_stdout)]
 918 fn main() {
 919     panic!("Please use the cargo-clippy executable");
 920 }