clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(custom_attribute)]
   5 #![feature(rustc_private)]
   6 #![feature(slice_patterns)]
   7 #![feature(stmt_expr_attributes)]
   8 #![feature(conservative_impl_trait)]
   9 #![feature(range_contains)]
  10 #![feature(macro_vis_matcher)]
  11 #![allow(unknown_lints, indexing_slicing, shadow_reuse, missing_docs_in_private_items)]
  12 #![recursion_limit = "256"]
  13 // FIXME(mark-i-m) remove after i128 stablization merges
  14 #![allow(stable_features)]
  15 #![feature(i128, i128_type)]
  16 #![feature(iterator_find_map)]
  17
  18
  19 extern crate cargo_metadata;
  20 #[macro_use]
  21 extern crate rustc;
  22 extern crate rustc_typeck;
  23 extern crate rustc_target;
  24 extern crate syntax;
  25 extern crate syntax_pos;
  26
  27 extern crate toml;
  28
  29 // for unicode nfc normalization
  30
  31 extern crate unicode_normalization;
  32
  33 // for semver check in attrs.rs
  34
  35 extern crate semver;
  36
  37 // for regex checking
  38
  39 extern crate regex_syntax;
  40
  41 // for finding minimal boolean expressions
  42
  43 extern crate quine_mc_cluskey;
  44
  45 extern crate rustc_const_math;
  46 extern crate rustc_errors;
  47 extern crate rustc_plugin;
  48
  49 #[macro_use]
  50 extern crate matches as matches_macro;
  51
  52 extern crate serde;
  53 #[macro_use]
  54 extern crate serde_derive;
  55
  56 #[macro_use]
  57 extern crate lazy_static;
  58
  59 extern crate itertools;
  60 extern crate pulldown_cmark;
  61 extern crate url;
  62
  63 #[macro_use]
  64 extern crate if_chain;
  65
  66 macro_rules! declare_clippy_lint {
  67     { pub $name:tt, style, $description:tt } => {
  68         declare_lint! { pub $name, Warn, $description }
  69     };
  70     { pub $name:tt, correctness, $description:tt } => {
  71         declare_lint! { pub $name, Deny, $description }
  72     };
  73     { pub $name:tt, complexity, $description:tt } => {
  74         declare_lint! { pub $name, Warn, $description }
  75     };
  76     { pub $name:tt, perf, $description:tt } => {
  77         declare_lint! { pub $name, Warn, $description }
  78     };
  79     { pub $name:tt, pedantic, $description:tt } => {
  80         declare_lint! { pub $name, Allow, $description }
  81     };
  82     { pub $name:tt, restriction, $description:tt } => {
  83         declare_lint! { pub $name, Allow, $description }
  84     };
  85     { pub $name:tt, cargo, $description:tt } => {
  86         declare_lint! { pub $name, Allow, $description }
  87     };
  88     { pub $name:tt, nursery, $description:tt } => {
  89         declare_lint! { pub $name, Allow, $description }
  90     };
  91     { pub $name:tt, internal, $description:tt } => {
  92         declare_lint! { pub $name, Allow, $description }
  93     };
  94     { pub $name:tt, internal_warn, $description:tt } => {
  95         declare_lint! { pub $name, Warn, $description }
  96     };
  97 }
  98
  99 pub mod consts;
 100 #[macro_use]
 101 pub mod utils;
 102
 103 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 104 pub mod approx_const;
 105 pub mod arithmetic;
 106 pub mod array_indexing;
 107 pub mod assign_ops;
 108 pub mod attrs;
 109 pub mod bit_mask;
 110 pub mod blacklisted_name;
 111 pub mod block_in_if_condition;
 112 pub mod booleans;
 113 pub mod bytecount;
 114 pub mod collapsible_if;
 115 pub mod const_static_lifetime;
 116 pub mod copies;
 117 pub mod cyclomatic_complexity;
 118 pub mod derive;
 119 pub mod doc;
 120 pub mod double_comparison;
 121 pub mod double_parens;
 122 pub mod drop_forget_ref;
 123 pub mod else_if_without_else;
 124 pub mod empty_enum;
 125 pub mod entry;
 126 pub mod enum_clike;
 127 pub mod enum_glob_use;
 128 pub mod enum_variants;
 129 pub mod eq_op;
 130 pub mod erasing_op;
 131 pub mod escape;
 132 pub mod eta_reduction;
 133 pub mod eval_order_dependence;
 134 pub mod excessive_precision;
 135 pub mod explicit_write;
 136 pub mod fallible_impl_from;
 137 pub mod format;
 138 pub mod formatting;
 139 pub mod functions;
 140 pub mod identity_conversion;
 141 pub mod identity_op;
 142 pub mod if_let_redundant_pattern_matching;
 143 pub mod if_not_else;
 144 pub mod infallible_destructuring_match;
 145 pub mod infinite_iter;
 146 pub mod inline_fn_without_body;
 147 pub mod int_plus_one;
 148 pub mod invalid_ref;
 149 pub mod items_after_statements;
 150 pub mod large_enum_variant;
 151 pub mod len_zero;
 152 pub mod let_if_seq;
 153 pub mod lifetimes;
 154 pub mod literal_representation;
 155 pub mod loops;
 156 pub mod map_clone;
 157 pub mod map_unit_fn;
 158 pub mod matches;
 159 pub mod mem_forget;
 160 pub mod methods;
 161 pub mod minmax;
 162 pub mod misc;
 163 pub mod misc_early;
 164 pub mod missing_doc;
 165 pub mod multiple_crate_versions;
 166 pub mod mut_mut;
 167 pub mod mut_reference;
 168 pub mod mutex_atomic;
 169 pub mod needless_bool;
 170 pub mod needless_borrow;
 171 pub mod needless_borrowed_ref;
 172 pub mod needless_continue;
 173 pub mod needless_pass_by_value;
 174 pub mod needless_update;
 175 pub mod neg_multiply;
 176 pub mod new_without_default;
 177 pub mod no_effect;
 178 pub mod non_expressive_names;
 179 pub mod ok_if_let;
 180 pub mod open_options;
 181 pub mod overflow_check_conditional;
 182 pub mod panic;
 183 pub mod partialeq_ne_impl;
 184 pub mod precedence;
 185 pub mod ptr;
 186 pub mod question_mark;
 187 pub mod ranges;
 188 pub mod redundant_field_names;
 189 pub mod reference;
 190 pub mod regex;
 191 pub mod replace_consts;
 192 pub mod returns;
 193 pub mod serde_api;
 194 pub mod shadow;
 195 pub mod strings;
 196 pub mod suspicious_trait_impl;
 197 pub mod swap;
 198 pub mod temporary_assignment;
 199 pub mod transmute;
 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 use_self;
 206 pub mod vec;
 207 pub mod write;
 208 pub mod zero_div_zero;
 209 // end lints modules, do not remove this comment, it’s used in `update_lints`
 210
 211 mod reexport {
 212     pub use syntax::ast::{Name, NodeId};
 213 }
 214
 215 #[cfg_attr(rustfmt, rustfmt_skip)]
 216 pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
 217     let conf = match utils::conf::file_from_args(reg.args()) {
 218         Ok(file_name) => {
 219             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 220             // do not require the file to exist
 221             let file_name = if let Some(file_name) = file_name {
 222                 Some(file_name)
 223             } else {
 224                 match utils::conf::lookup_conf_file() {
 225                     Ok(path) => path,
 226                     Err(error) => {
 227                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 228                         None
 229                     }
 230                 }
 231             };
 232
 233             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 234                 reg.sess
 235                     .local_crate_source_file
 236                     .as_ref()
 237                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 238                     .unwrap_or_default()
 239                     .join(file_name)
 240             } else {
 241                 file_name
 242             });
 243
 244             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 245
 246             // all conf errors are non-fatal, we just use the default conf in case of error
 247             for error in errors {
 248                 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();
 249             }
 250
 251             conf
 252         }
 253         Err((err, span)) => {
 254             reg.sess.struct_span_err(span, err)
 255                     .span_note(span, "Clippy will use default configuration")
 256                     .emit();
 257             toml::from_str("").expect("we never error on empty config files")
 258         }
 259     };
 260
 261     let mut store = reg.sess.lint_store.borrow_mut();
 262     store.register_removed(
 263         "should_assert_eq",
 264         "`assert!()` will be more flexible with RFC 2011",
 265     );
 266     store.register_removed(
 267         "extend_from_slice",
 268         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 269     );
 270     store.register_removed(
 271         "range_step_by_zero",
 272         "`iterator.step_by(0)` panics nowadays",
 273     );
 274     store.register_removed(
 275         "unstable_as_slice",
 276         "`Vec::as_slice` has been stabilized in 1.7",
 277     );
 278     store.register_removed(
 279         "unstable_as_mut_slice",
 280         "`Vec::as_mut_slice` has been stabilized in 1.7",
 281     );
 282     store.register_removed(
 283         "str_to_string",
 284         "using `str::to_string` is common even today and specialization will likely happen soon",
 285     );
 286     store.register_removed(
 287         "string_to_string",
 288         "using `string::to_string` is common even today and specialization will likely happen soon",
 289     );
 290     store.register_removed(
 291         "misaligned_transmute",
 292         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 293     );
 294     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 295
 296     reg.register_late_lint_pass(box serde_api::Serde);
 297     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 298     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 299     reg.register_late_lint_pass(box utils::inspector::Pass);
 300     reg.register_late_lint_pass(box utils::author::Pass);
 301     reg.register_late_lint_pass(box types::TypePass);
 302     reg.register_late_lint_pass(box booleans::NonminimalBool);
 303     reg.register_late_lint_pass(box eq_op::EqOp);
 304     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 305     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 306     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 307     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 308     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 309     reg.register_late_lint_pass(box ptr::PointerPass);
 310     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 311     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 312     reg.register_late_lint_pass(box approx_const::Pass);
 313     reg.register_late_lint_pass(box misc::Pass);
 314     reg.register_early_lint_pass(box precedence::Precedence);
 315     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 316     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 317     reg.register_late_lint_pass(box identity_op::IdentityOp);
 318     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 319     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 320     reg.register_late_lint_pass(box mut_mut::MutMut);
 321     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 322     reg.register_late_lint_pass(box len_zero::LenZero);
 323     reg.register_late_lint_pass(box attrs::AttrPass);
 324     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 325     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 326     reg.register_late_lint_pass(box unicode::Unicode);
 327     reg.register_late_lint_pass(box strings::StringAdd);
 328     reg.register_early_lint_pass(box returns::ReturnPass);
 329     reg.register_late_lint_pass(box methods::Pass);
 330     reg.register_late_lint_pass(box shadow::Pass);
 331     reg.register_late_lint_pass(box types::LetPass);
 332     reg.register_late_lint_pass(box types::UnitCmp);
 333     reg.register_late_lint_pass(box loops::Pass);
 334     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 335     reg.register_late_lint_pass(box entry::HashMapLint);
 336     reg.register_late_lint_pass(box ranges::Pass);
 337     reg.register_late_lint_pass(box types::CastPass);
 338     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 339     reg.register_late_lint_pass(box matches::MatchPass);
 340     reg.register_late_lint_pass(box minmax::MinMaxPass);
 341     reg.register_late_lint_pass(box open_options::NonSensical);
 342     reg.register_late_lint_pass(box zero_div_zero::Pass);
 343     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 344     reg.register_late_lint_pass(box needless_update::Pass);
 345     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 346     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 347     reg.register_late_lint_pass(box no_effect::Pass);
 348     reg.register_late_lint_pass(box map_clone::Pass);
 349     reg.register_late_lint_pass(box temporary_assignment::Pass);
 350     reg.register_late_lint_pass(box transmute::Transmute);
 351     reg.register_late_lint_pass(
 352         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 353     );
 354     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 355     reg.register_early_lint_pass(box misc_early::MiscEarly);
 356     reg.register_late_lint_pass(box array_indexing::ArrayIndexing);
 357     reg.register_late_lint_pass(box panic::Pass);
 358     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 359     reg.register_late_lint_pass(box derive::Derive);
 360     reg.register_late_lint_pass(box types::CharLitAsU8);
 361     reg.register_late_lint_pass(box write::Pass);
 362     reg.register_late_lint_pass(box vec::Pass);
 363     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 364         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 365     });
 366     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 367     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 368     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 369     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 370     reg.register_late_lint_pass(box regex::Pass::default());
 371     reg.register_late_lint_pass(box copies::CopyAndPaste);
 372     reg.register_late_lint_pass(box format::Pass);
 373     reg.register_early_lint_pass(box formatting::Formatting);
 374     reg.register_late_lint_pass(box swap::Swap);
 375     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 376     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 377     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 378     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 379     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 380     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 381     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 382     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 383     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 384     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 385     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 386     reg.register_late_lint_pass(box mem_forget::MemForget);
 387     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 388     reg.register_late_lint_pass(box assign_ops::AssignOps);
 389     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 390     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 391     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 392     reg.register_late_lint_pass(box ok_if_let::Pass);
 393     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 394     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 395     reg.register_early_lint_pass(box reference::Pass);
 396     reg.register_early_lint_pass(box double_parens::DoubleParens);
 397     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 398     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 399     reg.register_late_lint_pass(box explicit_write::Pass);
 400     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 401     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 402     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 403             conf.literal_representation_threshold
 404     ));
 405     reg.register_late_lint_pass(box use_self::UseSelf);
 406     reg.register_late_lint_pass(box bytecount::ByteCount);
 407     reg.register_late_lint_pass(box infinite_iter::Pass);
 408     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 409     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 410     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 411     reg.register_late_lint_pass(box types::ImplicitHasher);
 412     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 413     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 414     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 415     reg.register_late_lint_pass(box types::UnitArg);
 416     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 417     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 418     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 419     reg.register_late_lint_pass(box redundant_field_names::RedundantFieldNames);
 420     reg.register_early_lint_pass(box multiple_crate_versions::Pass);
 421     reg.register_late_lint_pass(box map_unit_fn::Pass);
 422     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 423
 424
 425     reg.register_lint_group("clippy_restriction", vec![
 426         arithmetic::FLOAT_ARITHMETIC,
 427         arithmetic::INTEGER_ARITHMETIC,
 428         array_indexing::INDEXING_SLICING,
 429         assign_ops::ASSIGN_OPS,
 430         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 431         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 432         mem_forget::MEM_FORGET,
 433         methods::CLONE_ON_REF_PTR,
 434         methods::OPTION_UNWRAP_USED,
 435         methods::RESULT_UNWRAP_USED,
 436         methods::WRONG_PUB_SELF_CONVENTION,
 437         misc::FLOAT_CMP_CONST,
 438         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 439         shadow::SHADOW_REUSE,
 440         shadow::SHADOW_SAME,
 441         shadow::SHADOW_UNRELATED,
 442         strings::STRING_ADD,
 443         write::PRINT_STDOUT,
 444         write::USE_DEBUG,
 445     ]);
 446
 447     reg.register_lint_group("clippy_pedantic", vec![
 448         attrs::INLINE_ALWAYS,
 449         copies::MATCH_SAME_ARMS,
 450         derive::EXPL_IMPL_CLONE_ON_COPY,
 451         doc::DOC_MARKDOWN,
 452         empty_enum::EMPTY_ENUM,
 453         enum_glob_use::ENUM_GLOB_USE,
 454         enum_variants::PUB_ENUM_VARIANT_NAMES,
 455         enum_variants::STUTTER,
 456         if_not_else::IF_NOT_ELSE,
 457         infinite_iter::MAYBE_INFINITE_ITER,
 458         items_after_statements::ITEMS_AFTER_STATEMENTS,
 459         matches::SINGLE_MATCH_ELSE,
 460         methods::FILTER_MAP,
 461         methods::OPTION_MAP_UNWRAP_OR,
 462         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 463         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 464         misc::USED_UNDERSCORE_BINDING,
 465         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 466         mut_mut::MUT_MUT,
 467         needless_continue::NEEDLESS_CONTINUE,
 468         non_expressive_names::SIMILAR_NAMES,
 469         replace_consts::REPLACE_CONSTS,
 470         strings::STRING_ADD_ASSIGN,
 471         types::CAST_POSSIBLE_TRUNCATION,
 472         types::CAST_POSSIBLE_WRAP,
 473         types::CAST_PRECISION_LOSS,
 474         types::CAST_SIGN_LOSS,
 475         types::INVALID_UPCAST_COMPARISONS,
 476         types::LINKEDLIST,
 477         unicode::NON_ASCII_LITERAL,
 478         unicode::UNICODE_NOT_NFC,
 479         use_self::USE_SELF,
 480     ]);
 481
 482     reg.register_lint_group("clippy_internal", vec![
 483         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 484         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 485     ]);
 486
 487     reg.register_lint_group("clippy", vec![
 488         approx_const::APPROX_CONSTANT,
 489         array_indexing::OUT_OF_BOUNDS_INDEXING,
 490         assign_ops::ASSIGN_OP_PATTERN,
 491         assign_ops::MISREFACTORED_ASSIGN_OP,
 492         attrs::DEPRECATED_SEMVER,
 493         attrs::USELESS_ATTRIBUTE,
 494         bit_mask::BAD_BIT_MASK,
 495         bit_mask::INEFFECTIVE_BIT_MASK,
 496         bit_mask::VERBOSE_BIT_MASK,
 497         blacklisted_name::BLACKLISTED_NAME,
 498         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 499         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 500         booleans::LOGIC_BUG,
 501         booleans::NONMINIMAL_BOOL,
 502         bytecount::NAIVE_BYTECOUNT,
 503         collapsible_if::COLLAPSIBLE_IF,
 504         const_static_lifetime::CONST_STATIC_LIFETIME,
 505         copies::IF_SAME_THEN_ELSE,
 506         copies::IFS_SAME_COND,
 507         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 508         derive::DERIVE_HASH_XOR_EQ,
 509         double_comparison::DOUBLE_COMPARISONS,
 510         double_parens::DOUBLE_PARENS,
 511         drop_forget_ref::DROP_COPY,
 512         drop_forget_ref::DROP_REF,
 513         drop_forget_ref::FORGET_COPY,
 514         drop_forget_ref::FORGET_REF,
 515         entry::MAP_ENTRY,
 516         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 517         enum_variants::ENUM_VARIANT_NAMES,
 518         enum_variants::MODULE_INCEPTION,
 519         eq_op::EQ_OP,
 520         eq_op::OP_REF,
 521         erasing_op::ERASING_OP,
 522         escape::BOXED_LOCAL,
 523         eta_reduction::REDUNDANT_CLOSURE,
 524         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 525         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 526         excessive_precision::EXCESSIVE_PRECISION,
 527         explicit_write::EXPLICIT_WRITE,
 528         format::USELESS_FORMAT,
 529         formatting::POSSIBLE_MISSING_COMMA,
 530         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 531         formatting::SUSPICIOUS_ELSE_FORMATTING,
 532         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 533         functions::TOO_MANY_ARGUMENTS,
 534         identity_conversion::IDENTITY_CONVERSION,
 535         identity_op::IDENTITY_OP,
 536         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 537         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 538         infinite_iter::INFINITE_ITER,
 539         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 540         int_plus_one::INT_PLUS_ONE,
 541         invalid_ref::INVALID_REF,
 542         large_enum_variant::LARGE_ENUM_VARIANT,
 543         len_zero::LEN_WITHOUT_IS_EMPTY,
 544         len_zero::LEN_ZERO,
 545         let_if_seq::USELESS_LET_IF_SEQ,
 546         lifetimes::NEEDLESS_LIFETIMES,
 547         lifetimes::UNUSED_LIFETIMES,
 548         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 549         literal_representation::LARGE_DIGIT_GROUPS,
 550         literal_representation::UNREADABLE_LITERAL,
 551         loops::EMPTY_LOOP,
 552         loops::EXPLICIT_COUNTER_LOOP,
 553         loops::EXPLICIT_INTO_ITER_LOOP,
 554         loops::EXPLICIT_ITER_LOOP,
 555         loops::FOR_KV_MAP,
 556         loops::FOR_LOOP_OVER_OPTION,
 557         loops::FOR_LOOP_OVER_RESULT,
 558         loops::ITER_NEXT_LOOP,
 559         loops::MANUAL_MEMCPY,
 560         loops::MUT_RANGE_BOUND,
 561         loops::NEEDLESS_RANGE_LOOP,
 562         loops::NEVER_LOOP,
 563         loops::REVERSE_RANGE_LOOP,
 564         loops::UNUSED_COLLECT,
 565         loops::WHILE_IMMUTABLE_CONDITION,
 566         loops::WHILE_LET_LOOP,
 567         loops::WHILE_LET_ON_ITERATOR,
 568         map_clone::MAP_CLONE,
 569         map_unit_fn::OPTION_MAP_UNIT_FN,
 570         map_unit_fn::RESULT_MAP_UNIT_FN,
 571         matches::MATCH_AS_REF,
 572         matches::MATCH_BOOL,
 573         matches::MATCH_OVERLAPPING_ARM,
 574         matches::MATCH_REF_PATS,
 575         matches::MATCH_WILD_ERR_ARM,
 576         matches::SINGLE_MATCH,
 577         methods::CHARS_LAST_CMP,
 578         methods::CHARS_NEXT_CMP,
 579         methods::CLONE_DOUBLE_REF,
 580         methods::CLONE_ON_COPY,
 581         methods::FILTER_NEXT,
 582         methods::GET_UNWRAP,
 583         methods::ITER_CLONED_COLLECT,
 584         methods::ITER_NTH,
 585         methods::ITER_SKIP_NEXT,
 586         methods::NEW_RET_NO_SELF,
 587         methods::OK_EXPECT,
 588         methods::OPTION_MAP_OR_NONE,
 589         methods::OR_FUN_CALL,
 590         methods::SEARCH_IS_SOME,
 591         methods::SHOULD_IMPLEMENT_TRAIT,
 592         methods::SINGLE_CHAR_PATTERN,
 593         methods::STRING_EXTEND_CHARS,
 594         methods::TEMPORARY_CSTRING_AS_PTR,
 595         methods::UNNECESSARY_FOLD,
 596         methods::USELESS_ASREF,
 597         methods::WRONG_SELF_CONVENTION,
 598         minmax::MIN_MAX,
 599         misc::CMP_NAN,
 600         misc::CMP_OWNED,
 601         misc::FLOAT_CMP,
 602         misc::MODULO_ONE,
 603         misc::REDUNDANT_PATTERN,
 604         misc::SHORT_CIRCUIT_STATEMENT,
 605         misc::TOPLEVEL_REF_ARG,
 606         misc::ZERO_PTR,
 607         misc_early::BUILTIN_TYPE_SHADOW,
 608         misc_early::DOUBLE_NEG,
 609         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 610         misc_early::MIXED_CASE_HEX_LITERALS,
 611         misc_early::REDUNDANT_CLOSURE_CALL,
 612         misc_early::UNNEEDED_FIELD_PATTERN,
 613         misc_early::ZERO_PREFIXED_LITERAL,
 614         mut_reference::UNNECESSARY_MUT_PASSED,
 615         mutex_atomic::MUTEX_ATOMIC,
 616         needless_bool::BOOL_COMPARISON,
 617         needless_bool::NEEDLESS_BOOL,
 618         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 619         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 620         needless_update::NEEDLESS_UPDATE,
 621         neg_multiply::NEG_MULTIPLY,
 622         new_without_default::NEW_WITHOUT_DEFAULT,
 623         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 624         no_effect::NO_EFFECT,
 625         no_effect::UNNECESSARY_OPERATION,
 626         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 627         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 628         ok_if_let::IF_LET_SOME_RESULT,
 629         open_options::NONSENSICAL_OPEN_OPTIONS,
 630         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 631         panic::PANIC_PARAMS,
 632         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 633         precedence::PRECEDENCE,
 634         ptr::CMP_NULL,
 635         ptr::MUT_FROM_REF,
 636         ptr::PTR_ARG,
 637         question_mark::QUESTION_MARK,
 638         ranges::ITERATOR_STEP_BY_ZERO,
 639         ranges::RANGE_MINUS_ONE,
 640         ranges::RANGE_ZIP_WITH_LEN,
 641         redundant_field_names::REDUNDANT_FIELD_NAMES,
 642         reference::DEREF_ADDROF,
 643         regex::INVALID_REGEX,
 644         regex::REGEX_MACRO,
 645         regex::TRIVIAL_REGEX,
 646         returns::LET_AND_RETURN,
 647         returns::NEEDLESS_RETURN,
 648         serde_api::SERDE_API_MISUSE,
 649         strings::STRING_LIT_AS_BYTES,
 650         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 651         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 652         swap::ALMOST_SWAPPED,
 653         swap::MANUAL_SWAP,
 654         temporary_assignment::TEMPORARY_ASSIGNMENT,
 655         transmute::CROSSPOINTER_TRANSMUTE,
 656         transmute::TRANSMUTE_BYTES_TO_STR,
 657         transmute::TRANSMUTE_INT_TO_BOOL,
 658         transmute::TRANSMUTE_INT_TO_CHAR,
 659         transmute::TRANSMUTE_INT_TO_FLOAT,
 660         transmute::TRANSMUTE_PTR_TO_PTR,
 661         transmute::TRANSMUTE_PTR_TO_REF,
 662         transmute::USELESS_TRANSMUTE,
 663         transmute::WRONG_TRANSMUTE,
 664         types::ABSURD_EXTREME_COMPARISONS,
 665         types::BORROWED_BOX,
 666         types::BOX_VEC,
 667         types::CAST_LOSSLESS,
 668         types::CAST_PTR_ALIGNMENT,
 669         types::CHAR_LIT_AS_U8,
 670         types::IMPLICIT_HASHER,
 671         types::LET_UNIT_VALUE,
 672         types::OPTION_OPTION,
 673         types::TYPE_COMPLEXITY,
 674         types::UNIT_ARG,
 675         types::UNIT_CMP,
 676         types::UNNECESSARY_CAST,
 677         unicode::ZERO_WIDTH_SPACE,
 678         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 679         unused_io_amount::UNUSED_IO_AMOUNT,
 680         unused_label::UNUSED_LABEL,
 681         vec::USELESS_VEC,
 682         write::PRINT_LITERAL,
 683         write::PRINT_WITH_NEWLINE,
 684         write::PRINTLN_EMPTY_STRING,
 685         write::WRITE_LITERAL,
 686         write::WRITE_WITH_NEWLINE,
 687         write::WRITELN_EMPTY_STRING,
 688         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 689     ]);
 690
 691     reg.register_lint_group("clippy_style", vec![
 692         assign_ops::ASSIGN_OP_PATTERN,
 693         bit_mask::VERBOSE_BIT_MASK,
 694         blacklisted_name::BLACKLISTED_NAME,
 695         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 696         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 697         collapsible_if::COLLAPSIBLE_IF,
 698         const_static_lifetime::CONST_STATIC_LIFETIME,
 699         enum_variants::ENUM_VARIANT_NAMES,
 700         enum_variants::MODULE_INCEPTION,
 701         eq_op::OP_REF,
 702         eta_reduction::REDUNDANT_CLOSURE,
 703         excessive_precision::EXCESSIVE_PRECISION,
 704         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 705         formatting::SUSPICIOUS_ELSE_FORMATTING,
 706         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 707         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 708         len_zero::LEN_WITHOUT_IS_EMPTY,
 709         len_zero::LEN_ZERO,
 710         let_if_seq::USELESS_LET_IF_SEQ,
 711         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 712         literal_representation::LARGE_DIGIT_GROUPS,
 713         literal_representation::UNREADABLE_LITERAL,
 714         loops::EMPTY_LOOP,
 715         loops::EXPLICIT_INTO_ITER_LOOP,
 716         loops::EXPLICIT_ITER_LOOP,
 717         loops::FOR_KV_MAP,
 718         loops::NEEDLESS_RANGE_LOOP,
 719         loops::WHILE_LET_ON_ITERATOR,
 720         map_clone::MAP_CLONE,
 721         matches::MATCH_BOOL,
 722         matches::MATCH_OVERLAPPING_ARM,
 723         matches::MATCH_REF_PATS,
 724         matches::MATCH_WILD_ERR_ARM,
 725         matches::SINGLE_MATCH,
 726         methods::CHARS_LAST_CMP,
 727         methods::GET_UNWRAP,
 728         methods::ITER_CLONED_COLLECT,
 729         methods::ITER_SKIP_NEXT,
 730         methods::NEW_RET_NO_SELF,
 731         methods::OK_EXPECT,
 732         methods::OPTION_MAP_OR_NONE,
 733         methods::SHOULD_IMPLEMENT_TRAIT,
 734         methods::STRING_EXTEND_CHARS,
 735         methods::UNNECESSARY_FOLD,
 736         methods::WRONG_SELF_CONVENTION,
 737         misc::REDUNDANT_PATTERN,
 738         misc::TOPLEVEL_REF_ARG,
 739         misc::ZERO_PTR,
 740         misc_early::BUILTIN_TYPE_SHADOW,
 741         misc_early::DOUBLE_NEG,
 742         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 743         misc_early::MIXED_CASE_HEX_LITERALS,
 744         misc_early::UNNEEDED_FIELD_PATTERN,
 745         mut_reference::UNNECESSARY_MUT_PASSED,
 746         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 747         neg_multiply::NEG_MULTIPLY,
 748         new_without_default::NEW_WITHOUT_DEFAULT,
 749         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 750         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 751         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 752         ok_if_let::IF_LET_SOME_RESULT,
 753         panic::PANIC_PARAMS,
 754         ptr::CMP_NULL,
 755         ptr::PTR_ARG,
 756         question_mark::QUESTION_MARK,
 757         ranges::RANGE_MINUS_ONE,
 758         redundant_field_names::REDUNDANT_FIELD_NAMES,
 759         regex::REGEX_MACRO,
 760         regex::TRIVIAL_REGEX,
 761         returns::LET_AND_RETURN,
 762         returns::NEEDLESS_RETURN,
 763         strings::STRING_LIT_AS_BYTES,
 764         types::IMPLICIT_HASHER,
 765         types::LET_UNIT_VALUE,
 766         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 767         write::PRINT_LITERAL,
 768         write::PRINT_WITH_NEWLINE,
 769         write::PRINTLN_EMPTY_STRING,
 770         write::WRITE_LITERAL,
 771         write::WRITE_WITH_NEWLINE,
 772         write::WRITELN_EMPTY_STRING,
 773     ]);
 774
 775     reg.register_lint_group("clippy_complexity", vec![
 776         assign_ops::MISREFACTORED_ASSIGN_OP,
 777         booleans::NONMINIMAL_BOOL,
 778         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 779         double_comparison::DOUBLE_COMPARISONS,
 780         double_parens::DOUBLE_PARENS,
 781         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 782         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 783         explicit_write::EXPLICIT_WRITE,
 784         format::USELESS_FORMAT,
 785         functions::TOO_MANY_ARGUMENTS,
 786         identity_conversion::IDENTITY_CONVERSION,
 787         identity_op::IDENTITY_OP,
 788         int_plus_one::INT_PLUS_ONE,
 789         lifetimes::NEEDLESS_LIFETIMES,
 790         lifetimes::UNUSED_LIFETIMES,
 791         loops::EXPLICIT_COUNTER_LOOP,
 792         loops::MUT_RANGE_BOUND,
 793         loops::WHILE_LET_LOOP,
 794         map_unit_fn::OPTION_MAP_UNIT_FN,
 795         map_unit_fn::RESULT_MAP_UNIT_FN,
 796         matches::MATCH_AS_REF,
 797         methods::CHARS_NEXT_CMP,
 798         methods::CLONE_ON_COPY,
 799         methods::FILTER_NEXT,
 800         methods::SEARCH_IS_SOME,
 801         methods::USELESS_ASREF,
 802         misc::SHORT_CIRCUIT_STATEMENT,
 803         misc_early::REDUNDANT_CLOSURE_CALL,
 804         misc_early::ZERO_PREFIXED_LITERAL,
 805         needless_bool::BOOL_COMPARISON,
 806         needless_bool::NEEDLESS_BOOL,
 807         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 808         needless_update::NEEDLESS_UPDATE,
 809         no_effect::NO_EFFECT,
 810         no_effect::UNNECESSARY_OPERATION,
 811         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 812         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 813         precedence::PRECEDENCE,
 814         ranges::RANGE_ZIP_WITH_LEN,
 815         reference::DEREF_ADDROF,
 816         swap::MANUAL_SWAP,
 817         temporary_assignment::TEMPORARY_ASSIGNMENT,
 818         transmute::CROSSPOINTER_TRANSMUTE,
 819         transmute::TRANSMUTE_BYTES_TO_STR,
 820         transmute::TRANSMUTE_INT_TO_BOOL,
 821         transmute::TRANSMUTE_INT_TO_CHAR,
 822         transmute::TRANSMUTE_INT_TO_FLOAT,
 823         transmute::TRANSMUTE_PTR_TO_PTR,
 824         transmute::TRANSMUTE_PTR_TO_REF,
 825         transmute::USELESS_TRANSMUTE,
 826         types::BORROWED_BOX,
 827         types::CAST_LOSSLESS,
 828         types::CHAR_LIT_AS_U8,
 829         types::OPTION_OPTION,
 830         types::TYPE_COMPLEXITY,
 831         types::UNIT_ARG,
 832         types::UNNECESSARY_CAST,
 833         unused_label::UNUSED_LABEL,
 834         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 835     ]);
 836
 837     reg.register_lint_group("clippy_correctness", vec![
 838         approx_const::APPROX_CONSTANT,
 839         array_indexing::OUT_OF_BOUNDS_INDEXING,
 840         attrs::DEPRECATED_SEMVER,
 841         attrs::USELESS_ATTRIBUTE,
 842         bit_mask::BAD_BIT_MASK,
 843         bit_mask::INEFFECTIVE_BIT_MASK,
 844         booleans::LOGIC_BUG,
 845         copies::IF_SAME_THEN_ELSE,
 846         copies::IFS_SAME_COND,
 847         derive::DERIVE_HASH_XOR_EQ,
 848         drop_forget_ref::DROP_COPY,
 849         drop_forget_ref::DROP_REF,
 850         drop_forget_ref::FORGET_COPY,
 851         drop_forget_ref::FORGET_REF,
 852         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 853         eq_op::EQ_OP,
 854         erasing_op::ERASING_OP,
 855         formatting::POSSIBLE_MISSING_COMMA,
 856         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 857         infinite_iter::INFINITE_ITER,
 858         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 859         invalid_ref::INVALID_REF,
 860         loops::FOR_LOOP_OVER_OPTION,
 861         loops::FOR_LOOP_OVER_RESULT,
 862         loops::ITER_NEXT_LOOP,
 863         loops::NEVER_LOOP,
 864         loops::REVERSE_RANGE_LOOP,
 865         loops::WHILE_IMMUTABLE_CONDITION,
 866         methods::CLONE_DOUBLE_REF,
 867         methods::TEMPORARY_CSTRING_AS_PTR,
 868         minmax::MIN_MAX,
 869         misc::CMP_NAN,
 870         misc::FLOAT_CMP,
 871         misc::MODULO_ONE,
 872         open_options::NONSENSICAL_OPEN_OPTIONS,
 873         ptr::MUT_FROM_REF,
 874         ranges::ITERATOR_STEP_BY_ZERO,
 875         regex::INVALID_REGEX,
 876         serde_api::SERDE_API_MISUSE,
 877         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 878         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 879         swap::ALMOST_SWAPPED,
 880         transmute::WRONG_TRANSMUTE,
 881         types::ABSURD_EXTREME_COMPARISONS,
 882         types::CAST_PTR_ALIGNMENT,
 883         types::UNIT_CMP,
 884         unicode::ZERO_WIDTH_SPACE,
 885         unused_io_amount::UNUSED_IO_AMOUNT,
 886     ]);
 887
 888     reg.register_lint_group("clippy_perf", vec![
 889         bytecount::NAIVE_BYTECOUNT,
 890         entry::MAP_ENTRY,
 891         escape::BOXED_LOCAL,
 892         large_enum_variant::LARGE_ENUM_VARIANT,
 893         loops::MANUAL_MEMCPY,
 894         loops::UNUSED_COLLECT,
 895         methods::ITER_NTH,
 896         methods::OR_FUN_CALL,
 897         methods::SINGLE_CHAR_PATTERN,
 898         misc::CMP_OWNED,
 899         mutex_atomic::MUTEX_ATOMIC,
 900         types::BOX_VEC,
 901         vec::USELESS_VEC,
 902     ]);
 903
 904     reg.register_lint_group("clippy_cargo", vec![
 905         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
 906     ]);
 907
 908     reg.register_lint_group("clippy_nursery", vec![
 909         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 910         fallible_impl_from::FALLIBLE_IMPL_FROM,
 911         mutex_atomic::MUTEX_INTEGER,
 912         needless_borrow::NEEDLESS_BORROW,
 913         ranges::RANGE_PLUS_ONE,
 914     ]);
 915 }
 916
 917 // only exists to let the dogfood integration test works.
 918 // Don't run clippy as an executable directly
 919 #[allow(dead_code, print_stdout)]
 920 fn main() {
 921     panic!("Please use the cargo-clippy executable");
 922 }