src/librustc/ty/maps/mod.rs

   1 // Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 use dep_graph::{DepConstructor, DepNode};
  12 use hir::def_id::{CrateNum, DefId, DefIndex};
  13 use hir::def::{Def, Export};
  14 use hir::{self, TraitCandidate, ItemLocalId, TransFnAttrs};
  15 use hir::svh::Svh;
  16 use infer::canonical::{self, Canonical};
  17 use lint;
  18 use middle::borrowck::BorrowCheckResult;
  19 use middle::cstore::{ExternCrate, LinkagePreference, NativeLibrary, ForeignModule};
  20 use middle::cstore::{NativeLibraryKind, DepKind, CrateSource};
  21 use middle::privacy::AccessLevels;
  22 use middle::reachable::ReachableSet;
  23 use middle::region;
  24 use middle::resolve_lifetime::{ResolveLifetimes, Region, ObjectLifetimeDefault};
  25 use middle::stability::{self, DeprecationEntry};
  26 use middle::lang_items::{LanguageItems, LangItem};
  27 use middle::exported_symbols::{SymbolExportLevel, ExportedSymbol};
  28 use middle::const_val::EvalResult;
  29 use mir::mono::{CodegenUnit, Stats};
  30 use mir;
  31 use mir::interpret::{GlobalId};
  32 use session::{CompileResult, CrateDisambiguator};
  33 use session::config::OutputFilenames;
  34 use traits::{self, Vtable};
  35 use traits::query::{CanonicalPredicateGoal, CanonicalProjectionGoal,
  36                     CanonicalTyGoal, NoSolution};
  37 use traits::query::dropck_outlives::{DtorckConstraint, DropckOutlivesResult};
  38 use traits::query::normalize::NormalizationResult;
  39 use traits::specialization_graph;
  40 use traits::Clauses;
  41 use ty::{self, CrateInherentImpls, ParamEnvAnd, Ty, TyCtxt};
  42 use ty::steal::Steal;
  43 use ty::subst::Substs;
  44 use util::nodemap::{DefIdSet, DefIdMap, ItemLocalSet};
  45 use util::common::{ErrorReported};
  46
  47 use rustc_data_structures::indexed_set::IdxSetBuf;
  48 use rustc_target::spec::PanicStrategy;
  49 use rustc_data_structures::indexed_vec::IndexVec;
  50 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
  51 use rustc_data_structures::stable_hasher::StableVec;
  52
  53 use std::ops::Deref;
  54 use rustc_data_structures::sync::Lrc;
  55 use std::sync::Arc;
  56 use syntax_pos::{Span, DUMMY_SP};
  57 use syntax_pos::symbol::InternedString;
  58 use syntax::attr;
  59 use syntax::ast;
  60 use syntax::feature_gate;
  61 use syntax::symbol::Symbol;
  62
  63 #[macro_use]
  64 mod plumbing;
  65 use self::plumbing::*;
  66 pub use self::plumbing::force_from_dep_node;
  67
  68 mod job;
  69 pub use self::job::{QueryJob, QueryInfo};
  70
  71 mod keys;
  72 pub use self::keys::Key;
  73
  74 mod values;
  75 use self::values::Value;
  76
  77 mod config;
  78 pub use self::config::QueryConfig;
  79 use self::config::QueryDescription;
  80
  81 mod on_disk_cache;
  82 pub use self::on_disk_cache::OnDiskCache;
  83
  84 // Each of these maps also corresponds to a method on a
  85 // `Provider` trait for requesting a value of that type,
  86 // and a method on `Maps` itself for doing that in a
  87 // a way that memoizes and does dep-graph tracking,
  88 // wrapping around the actual chain of providers that
  89 // the driver creates (using several `rustc_*` crates).
  90 //
  91 // The result of query must implement Clone. They must also implement ty::maps::values::Value
  92 // which produces an appropriate error value if the query resulted in a query cycle.
  93 // Queries marked with `fatal_cycle` do not need that implementation
  94 // as they will raise an fatal error on query cycles instead.
  95 define_maps! { <'tcx>
  96     /// Records the type of every item.
  97     [] fn type_of: TypeOfItem(DefId) -> Ty<'tcx>,
  98
  99     /// Maps from the def-id of an item (trait/struct/enum/fn) to its
 100     /// associated generics and predicates.
 101     [] fn generics_of: GenericsOfItem(DefId) -> &'tcx ty::Generics,
 102     [] fn predicates_of: PredicatesOfItem(DefId) -> ty::GenericPredicates<'tcx>,
 103     [] fn explicit_predicates_of: PredicatesOfItem(DefId) -> ty::GenericPredicates<'tcx>,
 104
 105     /// Maps from the def-id of a trait to the list of
 106     /// super-predicates. This is a subset of the full list of
 107     /// predicates. We store these in a separate map because we must
 108     /// evaluate them even during type conversion, often before the
 109     /// full predicates are available (note that supertraits have
 110     /// additional acyclicity requirements).
 111     [] fn super_predicates_of: SuperPredicatesOfItem(DefId) -> ty::GenericPredicates<'tcx>,
 112
 113     /// To avoid cycles within the predicates of a single item we compute
 114     /// per-type-parameter predicates for resolving `T::AssocTy`.
 115     [] fn type_param_predicates: type_param_predicates((DefId, DefId))
 116         -> ty::GenericPredicates<'tcx>,
 117
 118     [] fn trait_def: TraitDefOfItem(DefId) -> &'tcx ty::TraitDef,
 119     [] fn adt_def: AdtDefOfItem(DefId) -> &'tcx ty::AdtDef,
 120     [] fn adt_destructor: AdtDestructor(DefId) -> Option<ty::Destructor>,
 121     [] fn adt_sized_constraint: SizedConstraint(DefId) -> &'tcx [Ty<'tcx>],
 122     [] fn adt_dtorck_constraint: DtorckConstraint(
 123         DefId
 124     ) -> Result<DtorckConstraint<'tcx>, NoSolution>,
 125
 126     /// True if this is a const fn
 127     [] fn is_const_fn: IsConstFn(DefId) -> bool,
 128
 129     /// True if this is a foreign item (i.e., linked via `extern { ... }`).
 130     [] fn is_foreign_item: IsForeignItem(DefId) -> bool,
 131
 132     /// Get a map with the variance of every item; use `item_variance`
 133     /// instead.
 134     [] fn crate_variances: crate_variances(CrateNum) -> Lrc<ty::CrateVariancesMap>,
 135
 136     /// Maps from def-id of a type or region parameter to its
 137     /// (inferred) variance.
 138     [] fn variances_of: ItemVariances(DefId) -> Lrc<Vec<ty::Variance>>,
 139
 140     /// Maps from def-id of a type to its (inferred) outlives.
 141     [] fn inferred_outlives_of: InferredOutlivesOf(DefId) -> Lrc<Vec<ty::Predicate<'tcx>>>,
 142
 143     /// Maps from def-id of a type to its (inferred) outlives.
 144     [] fn inferred_outlives_crate: InferredOutlivesCrate(CrateNum)
 145         -> Lrc<ty::CratePredicatesMap<'tcx>>,
 146
 147     /// Maps from an impl/trait def-id to a list of the def-ids of its items
 148     [] fn associated_item_def_ids: AssociatedItemDefIds(DefId) -> Lrc<Vec<DefId>>,
 149
 150     /// Maps from a trait item to the trait item "descriptor"
 151     [] fn associated_item: AssociatedItems(DefId) -> ty::AssociatedItem,
 152
 153     [] fn impl_trait_ref: ImplTraitRef(DefId) -> Option<ty::TraitRef<'tcx>>,
 154     [] fn impl_polarity: ImplPolarity(DefId) -> hir::ImplPolarity,
 155
 156     /// Maps a DefId of a type to a list of its inherent impls.
 157     /// Contains implementations of methods that are inherent to a type.
 158     /// Methods in these implementations don't need to be exported.
 159     [] fn inherent_impls: InherentImpls(DefId) -> Lrc<Vec<DefId>>,
 160
 161     /// Set of all the def-ids in this crate that have MIR associated with
 162     /// them. This includes all the body owners, but also things like struct
 163     /// constructors.
 164     [] fn mir_keys: mir_keys(CrateNum) -> Lrc<DefIdSet>,
 165
 166     /// Maps DefId's that have an associated Mir to the result
 167     /// of the MIR qualify_consts pass. The actual meaning of
 168     /// the value isn't known except to the pass itself.
 169     [] fn mir_const_qualif: MirConstQualif(DefId) -> (u8, Lrc<IdxSetBuf<mir::Local>>),
 170
 171     /// Fetch the MIR for a given def-id right after it's built - this includes
 172     /// unreachable code.
 173     [] fn mir_built: MirBuilt(DefId) -> &'tcx Steal<mir::Mir<'tcx>>,
 174
 175     /// Fetch the MIR for a given def-id up till the point where it is
 176     /// ready for const evaluation.
 177     ///
 178     /// See the README for the `mir` module for details.
 179     [] fn mir_const: MirConst(DefId) -> &'tcx Steal<mir::Mir<'tcx>>,
 180
 181     [] fn mir_validated: MirValidated(DefId) -> &'tcx Steal<mir::Mir<'tcx>>,
 182
 183     /// MIR after our optimization passes have run. This is MIR that is ready
 184     /// for trans. This is also the only query that can fetch non-local MIR, at present.
 185     [] fn optimized_mir: MirOptimized(DefId) -> &'tcx mir::Mir<'tcx>,
 186
 187     /// The result of unsafety-checking this def-id.
 188     [] fn unsafety_check_result: UnsafetyCheckResult(DefId) -> mir::UnsafetyCheckResult,
 189
 190     /// HACK: when evaluated, this reports a "unsafe derive on repr(packed)" error
 191     [] fn unsafe_derive_on_repr_packed: UnsafeDeriveOnReprPacked(DefId) -> (),
 192
 193     /// The signature of functions and closures.
 194     [] fn fn_sig: FnSignature(DefId) -> ty::PolyFnSig<'tcx>,
 195
 196     /// Caches CoerceUnsized kinds for impls on custom types.
 197     [] fn coerce_unsized_info: CoerceUnsizedInfo(DefId)
 198         -> ty::adjustment::CoerceUnsizedInfo,
 199
 200     [] fn typeck_item_bodies: typeck_item_bodies_dep_node(CrateNum) -> CompileResult,
 201
 202     [] fn typeck_tables_of: TypeckTables(DefId) -> &'tcx ty::TypeckTables<'tcx>,
 203
 204     [] fn used_trait_imports: UsedTraitImports(DefId) -> Lrc<DefIdSet>,
 205
 206     [] fn has_typeck_tables: HasTypeckTables(DefId) -> bool,
 207
 208     [] fn coherent_trait: CoherenceCheckTrait(DefId) -> (),
 209
 210     [] fn borrowck: BorrowCheck(DefId) -> Lrc<BorrowCheckResult>,
 211
 212     /// Borrow checks the function body. If this is a closure, returns
 213     /// additional requirements that the closure's creator must verify.
 214     [] fn mir_borrowck: MirBorrowCheck(DefId) -> mir::BorrowCheckResult<'tcx>,
 215
 216     /// Gets a complete map from all types to their inherent impls.
 217     /// Not meant to be used directly outside of coherence.
 218     /// (Defined only for LOCAL_CRATE)
 219     [] fn crate_inherent_impls: crate_inherent_impls_dep_node(CrateNum) -> CrateInherentImpls,
 220
 221     /// Checks all types in the krate for overlap in their inherent impls. Reports errors.
 222     /// Not meant to be used directly outside of coherence.
 223     /// (Defined only for LOCAL_CRATE)
 224     [] fn crate_inherent_impls_overlap_check: inherent_impls_overlap_check_dep_node(CrateNum) -> (),
 225
 226     /// Results of evaluating const items or constants embedded in
 227     /// other items (such as enum variant explicit discriminants).
 228     [] fn const_eval: const_eval_dep_node(ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>)
 229         -> EvalResult<'tcx>,
 230
 231     [] fn check_match: CheckMatch(DefId)
 232         -> Result<(), ErrorReported>,
 233
 234     /// Performs the privacy check and computes "access levels".
 235     [] fn privacy_access_levels: PrivacyAccessLevels(CrateNum) -> Lrc<AccessLevels>,
 236
 237     [] fn reachable_set: reachability_dep_node(CrateNum) -> ReachableSet,
 238
 239     /// Per-body `region::ScopeTree`. The `DefId` should be the owner-def-id for the body;
 240     /// in the case of closures, this will be redirected to the enclosing function.
 241     [] fn region_scope_tree: RegionScopeTree(DefId) -> Lrc<region::ScopeTree>,
 242
 243     [] fn mir_shims: mir_shim_dep_node(ty::InstanceDef<'tcx>) -> &'tcx mir::Mir<'tcx>,
 244
 245     [] fn def_symbol_name: SymbolName(DefId) -> ty::SymbolName,
 246     [] fn symbol_name: symbol_name_dep_node(ty::Instance<'tcx>) -> ty::SymbolName,
 247
 248     [] fn describe_def: DescribeDef(DefId) -> Option<Def>,
 249     [] fn def_span: DefSpan(DefId) -> Span,
 250     [] fn lookup_stability: LookupStability(DefId) -> Option<&'tcx attr::Stability>,
 251     [] fn lookup_deprecation_entry: LookupDeprecationEntry(DefId) -> Option<DeprecationEntry>,
 252     [] fn item_attrs: ItemAttrs(DefId) -> Lrc<[ast::Attribute]>,
 253     [] fn trans_fn_attrs: trans_fn_attrs(DefId) -> TransFnAttrs,
 254     [] fn fn_arg_names: FnArgNames(DefId) -> Vec<ast::Name>,
 255     /// Gets the rendered value of the specified constant or associated constant.
 256     /// Used by rustdoc.
 257     [] fn rendered_const: RenderedConst(DefId) -> String,
 258     [] fn impl_parent: ImplParent(DefId) -> Option<DefId>,
 259     [] fn trait_of_item: TraitOfItem(DefId) -> Option<DefId>,
 260     [] fn const_is_rvalue_promotable_to_static: ConstIsRvaluePromotableToStatic(DefId) -> bool,
 261     [] fn rvalue_promotable_map: RvaluePromotableMap(DefId) -> Lrc<ItemLocalSet>,
 262     [] fn is_mir_available: IsMirAvailable(DefId) -> bool,
 263     [] fn vtable_methods: vtable_methods_node(ty::PolyTraitRef<'tcx>)
 264                           -> Lrc<Vec<Option<(DefId, &'tcx Substs<'tcx>)>>>,
 265
 266     [] fn trans_fulfill_obligation: fulfill_obligation_dep_node(
 267         (ty::ParamEnv<'tcx>, ty::PolyTraitRef<'tcx>)) -> Vtable<'tcx, ()>,
 268     [] fn trait_impls_of: TraitImpls(DefId) -> Lrc<ty::trait_def::TraitImpls>,
 269     [] fn specialization_graph_of: SpecializationGraph(DefId) -> Lrc<specialization_graph::Graph>,
 270     [] fn is_object_safe: ObjectSafety(DefId) -> bool,
 271
 272     // Get the ParameterEnvironment for a given item; this environment
 273     // will be in "user-facing" mode, meaning that it is suitabe for
 274     // type-checking etc, and it does not normalize specializable
 275     // associated types. This is almost always what you want,
 276     // unless you are doing MIR optimizations, in which case you
 277     // might want to use `reveal_all()` method to change modes.
 278     [] fn param_env: ParamEnv(DefId) -> ty::ParamEnv<'tcx>,
 279
 280     // Trait selection queries. These are best used by invoking `ty.moves_by_default()`,
 281     // `ty.is_copy()`, etc, since that will prune the environment where possible.
 282     [] fn is_copy_raw: is_copy_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
 283     [] fn is_sized_raw: is_sized_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
 284     [] fn is_freeze_raw: is_freeze_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
 285     [] fn needs_drop_raw: needs_drop_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
 286     [] fn layout_raw: layout_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>)
 287                                   -> Result<&'tcx ty::layout::LayoutDetails,
 288                                             ty::layout::LayoutError<'tcx>>,
 289
 290     [] fn dylib_dependency_formats: DylibDepFormats(CrateNum)
 291                                     -> Lrc<Vec<(CrateNum, LinkagePreference)>>,
 292
 293     [fatal_cycle] fn is_panic_runtime: IsPanicRuntime(CrateNum) -> bool,
 294     [fatal_cycle] fn is_compiler_builtins: IsCompilerBuiltins(CrateNum) -> bool,
 295     [fatal_cycle] fn has_global_allocator: HasGlobalAllocator(CrateNum) -> bool,
 296     [fatal_cycle] fn is_sanitizer_runtime: IsSanitizerRuntime(CrateNum) -> bool,
 297     [fatal_cycle] fn is_profiler_runtime: IsProfilerRuntime(CrateNum) -> bool,
 298     [fatal_cycle] fn panic_strategy: GetPanicStrategy(CrateNum) -> PanicStrategy,
 299     [fatal_cycle] fn is_no_builtins: IsNoBuiltins(CrateNum) -> bool,
 300
 301     [] fn extern_crate: ExternCrate(DefId) -> Lrc<Option<ExternCrate>>,
 302
 303     [] fn specializes: specializes_node((DefId, DefId)) -> bool,
 304     [] fn in_scope_traits_map: InScopeTraits(DefIndex)
 305         -> Option<Lrc<FxHashMap<ItemLocalId, Lrc<StableVec<TraitCandidate>>>>>,
 306     [] fn module_exports: ModuleExports(DefId) -> Option<Lrc<Vec<Export>>>,
 307     [] fn lint_levels: lint_levels_node(CrateNum) -> Lrc<lint::LintLevelMap>,
 308
 309     [] fn impl_defaultness: ImplDefaultness(DefId) -> hir::Defaultness,
 310
 311     [] fn check_item_well_formed: CheckItemWellFormed(DefId) -> (),
 312     [] fn check_trait_item_well_formed: CheckTraitItemWellFormed(DefId) -> (),
 313     [] fn check_impl_item_well_formed: CheckImplItemWellFormed(DefId) -> (),
 314
 315     // The DefIds of all non-generic functions and statics in the given crate
 316     // that can be reached from outside the crate.
 317     //
 318     // We expect this items to be available for being linked to.
 319     //
 320     // This query can also be called for LOCAL_CRATE. In this case it will
 321     // compute which items will be reachable to other crates, taking into account
 322     // the kind of crate that is currently compiled. Crates with only a
 323     // C interface have fewer reachable things.
 324     //
 325     // Does not include external symbols that don't have a corresponding DefId,
 326     // like the compiler-generated `main` function and so on.
 327     [] fn reachable_non_generics: ReachableNonGenerics(CrateNum)
 328         -> Lrc<DefIdMap<SymbolExportLevel>>,
 329     [] fn is_reachable_non_generic: IsReachableNonGeneric(DefId) -> bool,
 330     [] fn is_unreachable_local_definition: IsUnreachableLocalDefinition(DefId) -> bool,
 331
 332     [] fn upstream_monomorphizations: UpstreamMonomorphizations(CrateNum)
 333         -> Lrc<DefIdMap<Lrc<FxHashMap<&'tcx Substs<'tcx>, CrateNum>>>>,
 334     [] fn upstream_monomorphizations_for: UpstreamMonomorphizationsFor(DefId)
 335         -> Option<Lrc<FxHashMap<&'tcx Substs<'tcx>, CrateNum>>>,
 336
 337     [] fn native_libraries: NativeLibraries(CrateNum) -> Lrc<Vec<NativeLibrary>>,
 338
 339     [] fn foreign_modules: ForeignModules(CrateNum) -> Lrc<Vec<ForeignModule>>,
 340
 341     [] fn plugin_registrar_fn: PluginRegistrarFn(CrateNum) -> Option<DefId>,
 342     [] fn derive_registrar_fn: DeriveRegistrarFn(CrateNum) -> Option<DefId>,
 343     [] fn crate_disambiguator: CrateDisambiguator(CrateNum) -> CrateDisambiguator,
 344     [] fn crate_hash: CrateHash(CrateNum) -> Svh,
 345     [] fn original_crate_name: OriginalCrateName(CrateNum) -> Symbol,
 346     [] fn extra_filename: ExtraFileName(CrateNum) -> String,
 347
 348     [] fn implementations_of_trait: implementations_of_trait_node((CrateNum, DefId))
 349         -> Lrc<Vec<DefId>>,
 350     [] fn all_trait_implementations: AllTraitImplementations(CrateNum)
 351         -> Lrc<Vec<DefId>>,
 352
 353     [] fn dllimport_foreign_items: DllimportForeignItems(CrateNum)
 354         -> Lrc<FxHashSet<DefId>>,
 355     [] fn is_dllimport_foreign_item: IsDllimportForeignItem(DefId) -> bool,
 356     [] fn is_statically_included_foreign_item: IsStaticallyIncludedForeignItem(DefId) -> bool,
 357     [] fn native_library_kind: NativeLibraryKind(DefId)
 358         -> Option<NativeLibraryKind>,
 359     [] fn link_args: link_args_node(CrateNum) -> Lrc<Vec<String>>,
 360
 361     // Lifetime resolution. See `middle::resolve_lifetimes`.
 362     [] fn resolve_lifetimes: ResolveLifetimes(CrateNum) -> Lrc<ResolveLifetimes>,
 363     [] fn named_region_map: NamedRegion(DefIndex) ->
 364         Option<Lrc<FxHashMap<ItemLocalId, Region>>>,
 365     [] fn is_late_bound_map: IsLateBound(DefIndex) ->
 366         Option<Lrc<FxHashSet<ItemLocalId>>>,
 367     [] fn object_lifetime_defaults_map: ObjectLifetimeDefaults(DefIndex)
 368         -> Option<Lrc<FxHashMap<ItemLocalId, Lrc<Vec<ObjectLifetimeDefault>>>>>,
 369
 370     [] fn visibility: Visibility(DefId) -> ty::Visibility,
 371     [] fn dep_kind: DepKind(CrateNum) -> DepKind,
 372     [] fn crate_name: CrateName(CrateNum) -> Symbol,
 373     [] fn item_children: ItemChildren(DefId) -> Lrc<Vec<Export>>,
 374     [] fn extern_mod_stmt_cnum: ExternModStmtCnum(DefId) -> Option<CrateNum>,
 375
 376     [] fn get_lang_items: get_lang_items_node(CrateNum) -> Lrc<LanguageItems>,
 377     [] fn defined_lang_items: DefinedLangItems(CrateNum) -> Lrc<Vec<(DefId, usize)>>,
 378     [] fn missing_lang_items: MissingLangItems(CrateNum) -> Lrc<Vec<LangItem>>,
 379     [] fn visible_parent_map: visible_parent_map_node(CrateNum)
 380         -> Lrc<DefIdMap<DefId>>,
 381     [] fn missing_extern_crate_item: MissingExternCrateItem(CrateNum) -> bool,
 382     [] fn used_crate_source: UsedCrateSource(CrateNum) -> Lrc<CrateSource>,
 383     [] fn postorder_cnums: postorder_cnums_node(CrateNum) -> Lrc<Vec<CrateNum>>,
 384
 385     [] fn freevars: Freevars(DefId) -> Option<Lrc<Vec<hir::Freevar>>>,
 386     [] fn maybe_unused_trait_import: MaybeUnusedTraitImport(DefId) -> bool,
 387     [] fn maybe_unused_extern_crates: maybe_unused_extern_crates_node(CrateNum)
 388         -> Lrc<Vec<(DefId, Span)>>,
 389
 390     [] fn stability_index: stability_index_node(CrateNum) -> Lrc<stability::Index<'tcx>>,
 391     [] fn all_crate_nums: all_crate_nums_node(CrateNum) -> Lrc<Vec<CrateNum>>,
 392
 393     /// A vector of every trait accessible in the whole crate
 394     /// (i.e. including those from subcrates). This is used only for
 395     /// error reporting.
 396     [] fn all_traits: all_traits_node(CrateNum) -> Lrc<Vec<DefId>>,
 397
 398     [] fn exported_symbols: ExportedSymbols(CrateNum)
 399         -> Arc<Vec<(ExportedSymbol<'tcx>, SymbolExportLevel)>>,
 400     [] fn collect_and_partition_translation_items:
 401         collect_and_partition_translation_items_node(CrateNum)
 402         -> (Arc<DefIdSet>, Arc<Vec<Arc<CodegenUnit<'tcx>>>>),
 403     [] fn is_translated_item: IsTranslatedItem(DefId) -> bool,
 404     [] fn codegen_unit: CodegenUnit(InternedString) -> Arc<CodegenUnit<'tcx>>,
 405     [] fn compile_codegen_unit: CompileCodegenUnit(InternedString) -> Stats,
 406     [] fn output_filenames: output_filenames_node(CrateNum)
 407         -> Arc<OutputFilenames>,
 408
 409     // Erases regions from `ty` to yield a new type.
 410     // Normally you would just use `tcx.erase_regions(&value)`,
 411     // however, which uses this query as a kind of cache.
 412     [] fn erase_regions_ty: erase_regions_ty(Ty<'tcx>) -> Ty<'tcx>,
 413
 414     /// Do not call this query directly: invoke `normalize` instead.
 415     [] fn normalize_projection_ty: NormalizeProjectionTy(
 416         CanonicalProjectionGoal<'tcx>
 417     ) -> Result<
 418         Lrc<Canonical<'tcx, canonical::QueryResult<'tcx, NormalizationResult<'tcx>>>>,
 419         NoSolution,
 420     >,
 421
 422     /// Do not call this query directly: invoke `normalize_erasing_regions` instead.
 423     [] fn normalize_ty_after_erasing_regions: NormalizeTyAfterErasingRegions(
 424         ParamEnvAnd<'tcx, Ty<'tcx>>
 425     ) -> Ty<'tcx>,
 426
 427     /// Do not call this query directly: invoke `infcx.at().dropck_outlives()` instead.
 428     [] fn dropck_outlives: DropckOutlives(
 429         CanonicalTyGoal<'tcx>
 430     ) -> Result<
 431         Lrc<Canonical<'tcx, canonical::QueryResult<'tcx, DropckOutlivesResult<'tcx>>>>,
 432         NoSolution,
 433     >,
 434
 435     /// Do not call this query directly: invoke `infcx.predicate_may_hold()` or
 436     /// `infcx.predicate_must_hold()` instead.
 437     [] fn evaluate_obligation: EvaluateObligation(
 438         CanonicalPredicateGoal<'tcx>
 439     ) -> Result<traits::EvaluationResult, traits::OverflowError>,
 440
 441     [] fn substitute_normalize_and_test_predicates:
 442         substitute_normalize_and_test_predicates_node((DefId, &'tcx Substs<'tcx>)) -> bool,
 443
 444     [] fn target_features_whitelist:
 445         target_features_whitelist_node(CrateNum) -> Lrc<FxHashMap<String, Option<String>>>,
 446
 447     // Get an estimate of the size of an InstanceDef based on its MIR for CGU partitioning.
 448     [] fn instance_def_size_estimate: instance_def_size_estimate_dep_node(ty::InstanceDef<'tcx>)
 449         -> usize,
 450
 451     [] fn features_query: features_node(CrateNum) -> Lrc<feature_gate::Features>,
 452
 453     [] fn program_clauses_for: ProgramClausesFor(DefId) -> Clauses<'tcx>,
 454
 455     [] fn program_clauses_for_env: ProgramClausesForEnv(
 456         ty::ParamEnv<'tcx>
 457     ) -> Clauses<'tcx>,
 458
 459     [] fn wasm_custom_sections: WasmCustomSections(CrateNum) -> Lrc<Vec<DefId>>,
 460     [] fn wasm_import_module_map: WasmImportModuleMap(CrateNum)
 461         -> Lrc<FxHashMap<DefId, String>>,
 462 }
 463
 464 //////////////////////////////////////////////////////////////////////
 465 // These functions are little shims used to find the dep-node for a
 466 // given query when there is not a *direct* mapping:
 467
 468
 469 fn features_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 470     DepConstructor::Features
 471 }
 472
 473 fn trans_fn_attrs<'tcx>(id: DefId) -> DepConstructor<'tcx> {
 474     DepConstructor::TransFnAttrs { 0: id }
 475 }
 476
 477 fn erase_regions_ty<'tcx>(ty: Ty<'tcx>) -> DepConstructor<'tcx> {
 478     DepConstructor::EraseRegionsTy { ty }
 479 }
 480
 481 fn type_param_predicates<'tcx>((item_id, param_id): (DefId, DefId)) -> DepConstructor<'tcx> {
 482     DepConstructor::TypeParamPredicates {
 483         item_id,
 484         param_id
 485     }
 486 }
 487
 488 fn fulfill_obligation_dep_node<'tcx>((param_env, trait_ref):
 489     (ty::ParamEnv<'tcx>, ty::PolyTraitRef<'tcx>)) -> DepConstructor<'tcx> {
 490     DepConstructor::FulfillObligation {
 491         param_env,
 492         trait_ref
 493     }
 494 }
 495
 496 fn crate_inherent_impls_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 497     DepConstructor::Coherence
 498 }
 499
 500 fn inherent_impls_overlap_check_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 501     DepConstructor::CoherenceInherentImplOverlapCheck
 502 }
 503
 504 fn reachability_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 505     DepConstructor::Reachability
 506 }
 507
 508 fn mir_shim_dep_node<'tcx>(instance_def: ty::InstanceDef<'tcx>) -> DepConstructor<'tcx> {
 509     DepConstructor::MirShim {
 510         instance_def
 511     }
 512 }
 513
 514 fn symbol_name_dep_node<'tcx>(instance: ty::Instance<'tcx>) -> DepConstructor<'tcx> {
 515     DepConstructor::InstanceSymbolName { instance }
 516 }
 517
 518 fn typeck_item_bodies_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 519     DepConstructor::TypeckBodiesKrate
 520 }
 521
 522 fn const_eval_dep_node<'tcx>(param_env: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>)
 523                              -> DepConstructor<'tcx> {
 524     DepConstructor::ConstEval { param_env }
 525 }
 526
 527 fn mir_keys<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 528     DepConstructor::MirKeys
 529 }
 530
 531 fn crate_variances<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 532     DepConstructor::CrateVariances
 533 }
 534
 535 fn is_copy_dep_node<'tcx>(param_env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
 536     DepConstructor::IsCopy { param_env }
 537 }
 538
 539 fn is_sized_dep_node<'tcx>(param_env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
 540     DepConstructor::IsSized { param_env }
 541 }
 542
 543 fn is_freeze_dep_node<'tcx>(param_env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
 544     DepConstructor::IsFreeze { param_env }
 545 }
 546
 547 fn needs_drop_dep_node<'tcx>(param_env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
 548     DepConstructor::NeedsDrop { param_env }
 549 }
 550
 551 fn layout_dep_node<'tcx>(param_env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
 552     DepConstructor::Layout { param_env }
 553 }
 554
 555 fn lint_levels_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 556     DepConstructor::LintLevels
 557 }
 558
 559 fn specializes_node<'tcx>((a, b): (DefId, DefId)) -> DepConstructor<'tcx> {
 560     DepConstructor::Specializes { impl1: a, impl2: b }
 561 }
 562
 563 fn implementations_of_trait_node<'tcx>((krate, trait_id): (CrateNum, DefId))
 564     -> DepConstructor<'tcx>
 565 {
 566     DepConstructor::ImplementationsOfTrait { krate, trait_id }
 567 }
 568
 569 fn link_args_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 570     DepConstructor::LinkArgs
 571 }
 572
 573 fn get_lang_items_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 574     DepConstructor::GetLangItems
 575 }
 576
 577 fn visible_parent_map_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 578     DepConstructor::VisibleParentMap
 579 }
 580
 581 fn postorder_cnums_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 582     DepConstructor::PostorderCnums
 583 }
 584
 585 fn maybe_unused_extern_crates_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 586     DepConstructor::MaybeUnusedExternCrates
 587 }
 588
 589 fn stability_index_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 590     DepConstructor::StabilityIndex
 591 }
 592
 593 fn all_crate_nums_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 594     DepConstructor::AllCrateNums
 595 }
 596
 597 fn all_traits_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 598     DepConstructor::AllTraits
 599 }
 600
 601 fn collect_and_partition_translation_items_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 602     DepConstructor::CollectAndPartitionTranslationItems
 603 }
 604
 605 fn output_filenames_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 606     DepConstructor::OutputFilenames
 607 }
 608
 609 fn vtable_methods_node<'tcx>(trait_ref: ty::PolyTraitRef<'tcx>) -> DepConstructor<'tcx> {
 610     DepConstructor::VtableMethods{ trait_ref }
 611 }
 612
 613 fn substitute_normalize_and_test_predicates_node<'tcx>(key: (DefId, &'tcx Substs<'tcx>))
 614                                             -> DepConstructor<'tcx> {
 615     DepConstructor::SubstituteNormalizeAndTestPredicates { key }
 616 }
 617
 618 fn target_features_whitelist_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
 619     DepConstructor::TargetFeaturesWhitelist
 620 }
 621
 622 fn instance_def_size_estimate_dep_node<'tcx>(instance_def: ty::InstanceDef<'tcx>)
 623                                               -> DepConstructor<'tcx> {
 624     DepConstructor::InstanceDefSizeEstimate {
 625         instance_def
 626     }
 627 }