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