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