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