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