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.
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.
11 use dep_graph::{DepConstructor, DepNode, DepNodeIndex};
12 use errors::{Diagnostic, DiagnosticBuilder};
13 use hir::def_id::{CrateNum, DefId, LOCAL_CRATE, DefIndex};
14 use hir::def::{Def, Export};
15 use hir::{self, TraitCandidate, ItemLocalId};
18 use middle::const_val;
19 use middle::cstore::{ExternCrate, LinkagePreference, NativeLibrary};
20 use middle::cstore::{NativeLibraryKind, DepKind, CrateSource};
21 use middle::privacy::AccessLevels;
23 use middle::resolve_lifetime::{Region, ObjectLifetimeDefault};
24 use middle::stability::{self, DeprecationEntry};
25 use middle::lang_items::{LanguageItems, LangItem};
26 use middle::exported_symbols::ExportedSymbols;
28 use mir::transform::{MirSuite, MirPassIndex};
29 use session::CompileResult;
30 use traits::specialization_graph;
31 use ty::{self, CrateInherentImpls, Ty, TyCtxt};
32 use ty::layout::{Layout, LayoutError};
35 use ty::subst::Substs;
36 use ty::fast_reject::SimplifiedType;
37 use util::nodemap::{DefIdSet, NodeSet, DefIdMap};
38 use util::common::{profq_msg, ProfileQueriesMsg};
40 use rustc_data_structures::indexed_set::IdxSetBuf;
41 use rustc_back::PanicStrategy;
42 use rustc_data_structures::indexed_vec::IndexVec;
43 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
44 use std::cell::{RefCell, RefMut, Cell};
47 use std::marker::PhantomData;
49 use std::collections::BTreeMap;
53 use syntax_pos::{Span, DUMMY_SP};
56 use syntax::symbol::Symbol;
58 pub trait Key: Clone + Hash + Eq + Debug {
59 fn map_crate(&self) -> CrateNum;
60 fn default_span(&self, tcx: TyCtxt) -> Span;
63 impl<'tcx> Key for ty::InstanceDef<'tcx> {
64 fn map_crate(&self) -> CrateNum {
68 fn default_span(&self, tcx: TyCtxt) -> Span {
69 tcx.def_span(self.def_id())
73 impl<'tcx> Key for ty::Instance<'tcx> {
74 fn map_crate(&self) -> CrateNum {
78 fn default_span(&self, tcx: TyCtxt) -> Span {
79 tcx.def_span(self.def_id())
83 impl Key for CrateNum {
84 fn map_crate(&self) -> CrateNum {
87 fn default_span(&self, _: TyCtxt) -> Span {
92 impl Key for DefIndex {
93 fn map_crate(&self) -> CrateNum {
96 fn default_span(&self, _tcx: TyCtxt) -> Span {
102 fn map_crate(&self) -> CrateNum {
105 fn default_span(&self, tcx: TyCtxt) -> Span {
110 impl Key for (DefId, DefId) {
111 fn map_crate(&self) -> CrateNum {
114 fn default_span(&self, tcx: TyCtxt) -> Span {
115 self.1.default_span(tcx)
119 impl Key for (CrateNum, DefId) {
120 fn map_crate(&self) -> CrateNum {
123 fn default_span(&self, tcx: TyCtxt) -> Span {
124 self.1.default_span(tcx)
128 impl Key for (DefId, SimplifiedType) {
129 fn map_crate(&self) -> CrateNum {
132 fn default_span(&self, tcx: TyCtxt) -> Span {
133 self.0.default_span(tcx)
137 impl<'tcx> Key for (DefId, &'tcx Substs<'tcx>) {
138 fn map_crate(&self) -> CrateNum {
141 fn default_span(&self, tcx: TyCtxt) -> Span {
142 self.0.default_span(tcx)
146 impl Key for (MirSuite, DefId) {
147 fn map_crate(&self) -> CrateNum {
150 fn default_span(&self, tcx: TyCtxt) -> Span {
151 self.1.default_span(tcx)
155 impl Key for (MirSuite, MirPassIndex, DefId) {
156 fn map_crate(&self) -> CrateNum {
159 fn default_span(&self, tcx: TyCtxt) -> Span {
160 self.2.default_span(tcx)
164 impl<'tcx> Key for Ty<'tcx> {
165 fn map_crate(&self) -> CrateNum {
168 fn default_span(&self, _: TyCtxt) -> Span {
173 impl<'tcx, T: Key> Key for ty::ParamEnvAnd<'tcx, T> {
174 fn map_crate(&self) -> CrateNum {
175 self.value.map_crate()
177 fn default_span(&self, tcx: TyCtxt) -> Span {
178 self.value.default_span(tcx)
182 trait Value<'tcx>: Sized {
183 fn from_cycle_error<'a>(tcx: TyCtxt<'a, 'tcx, 'tcx>) -> Self;
186 impl<'tcx, T> Value<'tcx> for T {
187 default fn from_cycle_error<'a>(tcx: TyCtxt<'a, 'tcx, 'tcx>) -> T {
188 tcx.sess.abort_if_errors();
189 bug!("Value::from_cycle_error called without errors");
193 impl<'tcx, T: Default> Value<'tcx> for T {
194 default fn from_cycle_error<'a>(_: TyCtxt<'a, 'tcx, 'tcx>) -> T {
199 impl<'tcx> Value<'tcx> for Ty<'tcx> {
200 fn from_cycle_error<'a>(tcx: TyCtxt<'a, 'tcx, 'tcx>) -> Ty<'tcx> {
205 impl<'tcx> Value<'tcx> for ty::DtorckConstraint<'tcx> {
206 fn from_cycle_error<'a>(_: TyCtxt<'a, 'tcx, 'tcx>) -> Self {
211 impl<'tcx> Value<'tcx> for ty::SymbolName {
212 fn from_cycle_error<'a>(_: TyCtxt<'a, 'tcx, 'tcx>) -> Self {
213 ty::SymbolName { name: Symbol::intern("<error>").as_str() }
217 struct QueryMap<D: QueryDescription> {
218 phantom: PhantomData<D>,
219 map: FxHashMap<D::Key, QueryValue<D::Value>>,
222 struct QueryValue<T> {
225 diagnostics: Option<Box<QueryDiagnostics>>,
228 struct QueryDiagnostics {
229 diagnostics: Vec<Diagnostic>,
230 emitted_diagnostics: Cell<bool>,
233 impl<M: QueryDescription> QueryMap<M> {
234 fn new() -> QueryMap<M> {
236 phantom: PhantomData,
242 struct CycleError<'a, 'tcx: 'a> {
244 cycle: RefMut<'a, [(Span, Query<'tcx>)]>,
247 impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
248 fn report_cycle(self, CycleError { span, cycle }: CycleError)
249 -> DiagnosticBuilder<'a>
251 // Subtle: release the refcell lock before invoking `describe()`
252 // below by dropping `cycle`.
253 let stack = cycle.to_vec();
256 assert!(!stack.is_empty());
258 // Disable naming impls with types in this path, since that
259 // sometimes cycles itself, leading to extra cycle errors.
260 // (And cycle errors around impls tend to occur during the
261 // collect/coherence phases anyhow.)
262 item_path::with_forced_impl_filename_line(|| {
264 struct_span_err!(self.sess, span, E0391,
265 "unsupported cyclic reference between types/traits detected");
266 err.span_label(span, "cyclic reference");
268 err.span_note(stack[0].0, &format!("the cycle begins when {}...",
269 stack[0].1.describe(self)));
271 for &(span, ref query) in &stack[1..] {
272 err.span_note(span, &format!("...which then requires {}...",
273 query.describe(self)));
276 err.note(&format!("...which then again requires {}, completing the cycle.",
277 stack[0].1.describe(self)));
283 fn cycle_check<F, R>(self, span: Span, query: Query<'gcx>, compute: F)
284 -> Result<R, CycleError<'a, 'gcx>>
285 where F: FnOnce() -> R
288 let mut stack = self.maps.query_stack.borrow_mut();
289 if let Some((i, _)) = stack.iter().enumerate().rev()
290 .find(|&(_, &(_, ref q))| *q == query) {
291 return Err(CycleError {
293 cycle: RefMut::map(stack, |stack| &mut stack[i..])
296 stack.push((span, query));
299 let result = compute();
301 self.maps.query_stack.borrow_mut().pop();
307 pub trait QueryConfig {
308 type Key: Eq + Hash + Clone;
312 trait QueryDescription: QueryConfig {
313 fn describe(tcx: TyCtxt, key: Self::Key) -> String;
316 impl<M: QueryConfig<Key=DefId>> QueryDescription for M {
317 default fn describe(tcx: TyCtxt, def_id: DefId) -> String {
318 format!("processing `{}`", tcx.item_path_str(def_id))
322 impl<'tcx> QueryDescription for queries::is_copy_raw<'tcx> {
323 fn describe(_tcx: TyCtxt, env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> String {
324 format!("computing whether `{}` is `Copy`", env.value)
328 impl<'tcx> QueryDescription for queries::is_sized_raw<'tcx> {
329 fn describe(_tcx: TyCtxt, env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> String {
330 format!("computing whether `{}` is `Sized`", env.value)
334 impl<'tcx> QueryDescription for queries::is_freeze_raw<'tcx> {
335 fn describe(_tcx: TyCtxt, env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> String {
336 format!("computing whether `{}` is freeze", env.value)
340 impl<'tcx> QueryDescription for queries::needs_drop_raw<'tcx> {
341 fn describe(_tcx: TyCtxt, env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> String {
342 format!("computing whether `{}` needs drop", env.value)
346 impl<'tcx> QueryDescription for queries::layout_raw<'tcx> {
347 fn describe(_tcx: TyCtxt, env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> String {
348 format!("computing layout of `{}`", env.value)
352 impl<'tcx> QueryDescription for queries::super_predicates_of<'tcx> {
353 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
354 format!("computing the supertraits of `{}`",
355 tcx.item_path_str(def_id))
359 impl<'tcx> QueryDescription for queries::type_param_predicates<'tcx> {
360 fn describe(tcx: TyCtxt, (_, def_id): (DefId, DefId)) -> String {
361 let id = tcx.hir.as_local_node_id(def_id).unwrap();
362 format!("computing the bounds for type parameter `{}`",
363 tcx.hir.ty_param_name(id))
367 impl<'tcx> QueryDescription for queries::coherent_trait<'tcx> {
368 fn describe(tcx: TyCtxt, (_, def_id): (CrateNum, DefId)) -> String {
369 format!("coherence checking all impls of trait `{}`",
370 tcx.item_path_str(def_id))
374 impl<'tcx> QueryDescription for queries::crate_inherent_impls<'tcx> {
375 fn describe(_: TyCtxt, k: CrateNum) -> String {
376 format!("all inherent impls defined in crate `{:?}`", k)
380 impl<'tcx> QueryDescription for queries::crate_inherent_impls_overlap_check<'tcx> {
381 fn describe(_: TyCtxt, _: CrateNum) -> String {
382 format!("check for overlap between inherent impls defined in this crate")
386 impl<'tcx> QueryDescription for queries::crate_variances<'tcx> {
387 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
388 format!("computing the variances for items in this crate")
392 impl<'tcx> QueryDescription for queries::mir_shims<'tcx> {
393 fn describe(tcx: TyCtxt, def: ty::InstanceDef<'tcx>) -> String {
394 format!("generating MIR shim for `{}`",
395 tcx.item_path_str(def.def_id()))
399 impl<'tcx> QueryDescription for queries::privacy_access_levels<'tcx> {
400 fn describe(_: TyCtxt, _: CrateNum) -> String {
401 format!("privacy access levels")
405 impl<'tcx> QueryDescription for queries::typeck_item_bodies<'tcx> {
406 fn describe(_: TyCtxt, _: CrateNum) -> String {
407 format!("type-checking all item bodies")
411 impl<'tcx> QueryDescription for queries::reachable_set<'tcx> {
412 fn describe(_: TyCtxt, _: CrateNum) -> String {
413 format!("reachability")
417 impl<'tcx> QueryDescription for queries::const_eval<'tcx> {
418 fn describe(tcx: TyCtxt, key: ty::ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>) -> String {
419 format!("const-evaluating `{}`", tcx.item_path_str(key.value.0))
423 impl<'tcx> QueryDescription for queries::mir_keys<'tcx> {
424 fn describe(_: TyCtxt, _: CrateNum) -> String {
425 format!("getting a list of all mir_keys")
429 impl<'tcx> QueryDescription for queries::symbol_name<'tcx> {
430 fn describe(_tcx: TyCtxt, instance: ty::Instance<'tcx>) -> String {
431 format!("computing the symbol for `{}`", instance)
435 impl<'tcx> QueryDescription for queries::describe_def<'tcx> {
436 fn describe(_: TyCtxt, _: DefId) -> String {
441 impl<'tcx> QueryDescription for queries::def_span<'tcx> {
442 fn describe(_: TyCtxt, _: DefId) -> String {
448 impl<'tcx> QueryDescription for queries::lookup_stability<'tcx> {
449 fn describe(_: TyCtxt, _: DefId) -> String {
454 impl<'tcx> QueryDescription for queries::lookup_deprecation_entry<'tcx> {
455 fn describe(_: TyCtxt, _: DefId) -> String {
460 impl<'tcx> QueryDescription for queries::item_attrs<'tcx> {
461 fn describe(_: TyCtxt, _: DefId) -> String {
466 impl<'tcx> QueryDescription for queries::is_exported_symbol<'tcx> {
467 fn describe(_: TyCtxt, _: DefId) -> String {
468 bug!("is_exported_symbol")
472 impl<'tcx> QueryDescription for queries::fn_arg_names<'tcx> {
473 fn describe(_: TyCtxt, _: DefId) -> String {
478 impl<'tcx> QueryDescription for queries::impl_parent<'tcx> {
479 fn describe(_: TyCtxt, _: DefId) -> String {
484 impl<'tcx> QueryDescription for queries::trait_of_item<'tcx> {
485 fn describe(_: TyCtxt, _: DefId) -> String {
486 bug!("trait_of_item")
490 impl<'tcx> QueryDescription for queries::item_body_nested_bodies<'tcx> {
491 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
492 format!("nested item bodies of `{}`", tcx.item_path_str(def_id))
496 impl<'tcx> QueryDescription for queries::const_is_rvalue_promotable_to_static<'tcx> {
497 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
498 format!("const checking if rvalue is promotable to static `{}`",
499 tcx.item_path_str(def_id))
503 impl<'tcx> QueryDescription for queries::is_mir_available<'tcx> {
504 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
505 format!("checking if item is mir available: `{}`",
506 tcx.item_path_str(def_id))
510 impl<'tcx> QueryDescription for queries::trait_impls_of<'tcx> {
511 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
512 format!("trait impls of `{}`", tcx.item_path_str(def_id))
516 impl<'tcx> QueryDescription for queries::is_object_safe<'tcx> {
517 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
518 format!("determine object safety of trait `{}`", tcx.item_path_str(def_id))
522 impl<'tcx> QueryDescription for queries::is_const_fn<'tcx> {
523 fn describe(tcx: TyCtxt, def_id: DefId) -> String {
524 format!("checking if item is const fn: `{}`", tcx.item_path_str(def_id))
528 impl<'tcx> QueryDescription for queries::dylib_dependency_formats<'tcx> {
529 fn describe(_: TyCtxt, _: CrateNum) -> String {
530 "dylib dependency formats of crate".to_string()
534 impl<'tcx> QueryDescription for queries::is_panic_runtime<'tcx> {
535 fn describe(_: TyCtxt, _: CrateNum) -> String {
536 "checking if the crate is_panic_runtime".to_string()
540 impl<'tcx> QueryDescription for queries::is_compiler_builtins<'tcx> {
541 fn describe(_: TyCtxt, _: CrateNum) -> String {
542 "checking if the crate is_compiler_builtins".to_string()
546 impl<'tcx> QueryDescription for queries::has_global_allocator<'tcx> {
547 fn describe(_: TyCtxt, _: CrateNum) -> String {
548 "checking if the crate has_global_allocator".to_string()
552 impl<'tcx> QueryDescription for queries::extern_crate<'tcx> {
553 fn describe(_: TyCtxt, _: DefId) -> String {
554 "getting crate's ExternCrateData".to_string()
558 impl<'tcx> QueryDescription for queries::lint_levels<'tcx> {
559 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
560 format!("computing the lint levels for items in this crate")
564 impl<'tcx> QueryDescription for queries::specializes<'tcx> {
565 fn describe(_tcx: TyCtxt, _: (DefId, DefId)) -> String {
566 format!("computing whether impls specialize one another")
570 impl<'tcx> QueryDescription for queries::in_scope_traits_map<'tcx> {
571 fn describe(_tcx: TyCtxt, _: DefIndex) -> String {
572 format!("traits in scope at a block")
576 impl<'tcx> QueryDescription for queries::is_no_builtins<'tcx> {
577 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
578 format!("test whether a crate has #![no_builtins]")
582 impl<'tcx> QueryDescription for queries::panic_strategy<'tcx> {
583 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
584 format!("query a crate's configured panic strategy")
588 impl<'tcx> QueryDescription for queries::is_profiler_runtime<'tcx> {
589 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
590 format!("query a crate is #![profiler_runtime]")
594 impl<'tcx> QueryDescription for queries::is_sanitizer_runtime<'tcx> {
595 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
596 format!("query a crate is #![sanitizer_runtime]")
600 impl<'tcx> QueryDescription for queries::exported_symbol_ids<'tcx> {
601 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
602 format!("looking up the exported symbols of a crate")
606 impl<'tcx> QueryDescription for queries::native_libraries<'tcx> {
607 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
608 format!("looking up the native libraries of a linked crate")
612 impl<'tcx> QueryDescription for queries::plugin_registrar_fn<'tcx> {
613 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
614 format!("looking up the plugin registrar for a crate")
618 impl<'tcx> QueryDescription for queries::derive_registrar_fn<'tcx> {
619 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
620 format!("looking up the derive registrar for a crate")
624 impl<'tcx> QueryDescription for queries::crate_disambiguator<'tcx> {
625 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
626 format!("looking up the disambiguator a crate")
630 impl<'tcx> QueryDescription for queries::crate_hash<'tcx> {
631 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
632 format!("looking up the hash a crate")
636 impl<'tcx> QueryDescription for queries::original_crate_name<'tcx> {
637 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
638 format!("looking up the original name a crate")
642 impl<'tcx> QueryDescription for queries::implementations_of_trait<'tcx> {
643 fn describe(_tcx: TyCtxt, _: (CrateNum, DefId)) -> String {
644 format!("looking up implementations of a trait in a crate")
648 impl<'tcx> QueryDescription for queries::all_trait_implementations<'tcx> {
649 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
650 format!("looking up all (?) trait implementations")
654 impl<'tcx> QueryDescription for queries::link_args<'tcx> {
655 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
656 format!("looking up link arguments for a crate")
660 impl<'tcx> QueryDescription for queries::named_region_map<'tcx> {
661 fn describe(_tcx: TyCtxt, _: DefIndex) -> String {
662 format!("looking up a named region")
666 impl<'tcx> QueryDescription for queries::is_late_bound_map<'tcx> {
667 fn describe(_tcx: TyCtxt, _: DefIndex) -> String {
668 format!("testing if a region is late boudn")
672 impl<'tcx> QueryDescription for queries::object_lifetime_defaults_map<'tcx> {
673 fn describe(_tcx: TyCtxt, _: DefIndex) -> String {
674 format!("looking up lifetime defaults for a region")
678 impl<'tcx> QueryDescription for queries::dep_kind<'tcx> {
679 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
680 format!("fetching what a dependency looks like")
684 impl<'tcx> QueryDescription for queries::crate_name<'tcx> {
685 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
686 format!("fetching what a crate is named")
690 impl<'tcx> QueryDescription for queries::get_lang_items<'tcx> {
691 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
692 format!("calculating the lang items map")
696 impl<'tcx> QueryDescription for queries::defined_lang_items<'tcx> {
697 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
698 format!("calculating the lang items defined in a crate")
702 impl<'tcx> QueryDescription for queries::missing_lang_items<'tcx> {
703 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
704 format!("calculating the missing lang items in a crate")
708 impl<'tcx> QueryDescription for queries::visible_parent_map<'tcx> {
709 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
710 format!("calculating the visible parent map")
714 impl<'tcx> QueryDescription for queries::missing_extern_crate_item<'tcx> {
715 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
716 format!("seeing if we're missing an `extern crate` item for this crate")
720 impl<'tcx> QueryDescription for queries::used_crate_source<'tcx> {
721 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
722 format!("looking at the source for a crate")
726 impl<'tcx> QueryDescription for queries::postorder_cnums<'tcx> {
727 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
728 format!("generating a postorder list of CrateNums")
732 impl<'tcx> QueryDescription for queries::maybe_unused_extern_crates<'tcx> {
733 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
734 format!("looking up all possibly unused extern crates")
738 impl<'tcx> QueryDescription for queries::stability_index<'tcx> {
739 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
740 format!("calculating the stability index for the local crate")
744 impl<'tcx> QueryDescription for queries::all_crate_nums<'tcx> {
745 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
746 format!("fetching all foreign CrateNum instances")
750 impl<'tcx> QueryDescription for queries::exported_symbol_set<'tcx> {
751 fn describe(_tcx: TyCtxt, _: CrateNum) -> String {
752 format!("exported symbol set")
756 // If enabled, send a message to the profile-queries thread
757 macro_rules! profq_msg {
758 ($tcx:expr, $msg:expr) => {
759 if cfg!(debug_assertions) {
760 if $tcx.sess.profile_queries() {
767 // If enabled, format a key using its debug string, which can be
768 // expensive to compute (in terms of time).
769 macro_rules! profq_key {
770 ($tcx:expr, $key:expr) => {
771 if cfg!(debug_assertions) {
772 if $tcx.sess.profile_queries_and_keys() {
773 Some(format!("{:?}", $key))
779 macro_rules! define_maps {
782 [$($modifiers:tt)*] fn $name:ident: $node:ident($K:ty) -> $V:ty,)*) => {
785 input: ($(([$($modifiers)*] [$($attr)*] [$name]))*)
788 impl<$tcx> Maps<$tcx> {
789 pub fn new(providers: IndexVec<CrateNum, Providers<$tcx>>)
793 query_stack: RefCell::new(vec![]),
794 $($name: RefCell::new(QueryMap::new())),*
800 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
801 pub enum Query<$tcx> {
802 $($(#[$attr])* $name($K)),*
806 #[derive(Clone, Debug, PartialEq, Eq)]
808 $($name(Option<String>)),*
811 impl<$tcx> Query<$tcx> {
812 pub fn describe(&self, tcx: TyCtxt) -> String {
813 let (r, name) = match *self {
814 $(Query::$name(key) => {
815 (queries::$name::describe(tcx, key), stringify!($name))
818 if tcx.sess.verbose() {
819 format!("{} [{}]", r, name)
827 use std::marker::PhantomData;
829 $(#[allow(bad_style)]
830 pub struct $name<$tcx> {
831 data: PhantomData<&$tcx ()>
835 $(impl<$tcx> QueryConfig for queries::$name<$tcx> {
840 impl<'a, $tcx, 'lcx> queries::$name<$tcx> {
842 fn to_dep_node(tcx: TyCtxt<'a, $tcx, 'lcx>, key: &$K) -> DepNode {
843 use dep_graph::DepConstructor::*;
845 DepNode::new(tcx, $node(*key))
848 fn try_get_with<F, R>(tcx: TyCtxt<'a, $tcx, 'lcx>,
852 -> Result<R, CycleError<'a, $tcx>>
853 where F: FnOnce(&$V) -> R
855 debug!("ty::queries::{}::try_get_with(key={:?}, span={:?})",
861 ProfileQueriesMsg::QueryBegin(
863 QueryMsg::$name(profq_key!(tcx, key))
867 if let Some(value) = tcx.maps.$name.borrow().map.get(&key) {
868 if let Some(ref d) = value.diagnostics {
869 if !d.emitted_diagnostics.get() {
870 d.emitted_diagnostics.set(true);
871 let handle = tcx.sess.diagnostic();
872 for diagnostic in d.diagnostics.iter() {
873 DiagnosticBuilder::new_diagnostic(handle, diagnostic.clone())
878 profq_msg!(tcx, ProfileQueriesMsg::CacheHit);
879 tcx.dep_graph.read_index(value.index);
880 return Ok(f(&value.value));
882 // else, we are going to run the provider:
883 profq_msg!(tcx, ProfileQueriesMsg::ProviderBegin);
885 // FIXME(eddyb) Get more valid Span's on queries.
886 // def_span guard is necessary to prevent a recursive loop,
887 // default_span calls def_span query internally.
888 if span == DUMMY_SP && stringify!($name) != "def_span" {
889 span = key.default_span(tcx)
892 let res = tcx.cycle_check(span, Query::$name(key), || {
893 let dep_node = Self::to_dep_node(tcx, &key);
895 tcx.sess.diagnostic().track_diagnostics(|| {
896 if dep_node.kind.is_anon() {
897 tcx.dep_graph.with_anon_task(dep_node.kind, || {
898 let provider = tcx.maps.providers[key.map_crate()].$name;
899 provider(tcx.global_tcx(), key)
902 fn run_provider<'a, 'tcx, 'lcx>(tcx: TyCtxt<'a, 'tcx, 'lcx>,
905 let provider = tcx.maps.providers[key.map_crate()].$name;
906 provider(tcx.global_tcx(), key)
909 tcx.dep_graph.with_task(dep_node, tcx, key, run_provider)
913 profq_msg!(tcx, ProfileQueriesMsg::ProviderEnd);
914 let ((result, dep_node_index), diagnostics) = res;
916 tcx.dep_graph.read_index(dep_node_index);
918 let value = QueryValue {
920 index: dep_node_index,
921 diagnostics: if diagnostics.len() == 0 {
924 Some(Box::new(QueryDiagnostics {
926 emitted_diagnostics: Cell::new(true),
940 pub fn try_get(tcx: TyCtxt<'a, $tcx, 'lcx>, span: Span, key: $K)
941 -> Result<$V, DiagnosticBuilder<'a>> {
942 match Self::try_get_with(tcx, span, key, Clone::clone) {
944 Err(e) => Err(tcx.report_cycle(e)),
948 pub fn force(tcx: TyCtxt<'a, $tcx, 'lcx>, span: Span, key: $K) {
949 // Ignore dependencies, since we not reading the computed value
950 let _task = tcx.dep_graph.in_ignore();
952 match Self::try_get_with(tcx, span, key, |_| ()) {
954 Err(e) => tcx.report_cycle(e).emit(),
959 #[derive(Copy, Clone)]
960 pub struct TyCtxtAt<'a, 'gcx: 'a+'tcx, 'tcx: 'a> {
961 pub tcx: TyCtxt<'a, 'gcx, 'tcx>,
965 impl<'a, 'gcx, 'tcx> Deref for TyCtxtAt<'a, 'gcx, 'tcx> {
966 type Target = TyCtxt<'a, 'gcx, 'tcx>;
967 fn deref(&self) -> &Self::Target {
972 impl<'a, $tcx, 'lcx> TyCtxt<'a, $tcx, 'lcx> {
973 /// Return a transparent wrapper for `TyCtxt` which uses
974 /// `span` as the location of queries performed through it.
975 pub fn at(self, span: Span) -> TyCtxtAt<'a, $tcx, 'lcx> {
983 pub fn $name(self, key: $K) -> $V {
984 self.at(DUMMY_SP).$name(key)
988 impl<'a, $tcx, 'lcx> TyCtxtAt<'a, $tcx, 'lcx> {
990 pub fn $name(self, key: $K) -> $V {
991 queries::$name::try_get(self.tcx, self.span, key).unwrap_or_else(|mut e| {
993 Value::from_cycle_error(self.global_tcx())
998 define_provider_struct! {
1000 input: ($(([$($modifiers)*] [$name] [$K] [$V]))*),
1004 impl<$tcx> Copy for Providers<$tcx> {}
1005 impl<$tcx> Clone for Providers<$tcx> {
1006 fn clone(&self) -> Self { *self }
1011 macro_rules! define_map_struct {
1014 input: $input:tt) => {
1015 define_map_struct! {
1025 output: ($($output:tt)*)) => {
1026 pub struct Maps<$tcx> {
1027 providers: IndexVec<CrateNum, Providers<$tcx>>,
1028 query_stack: RefCell<Vec<(Span, Query<$tcx>)>>,
1033 // Field recognized and ready to shift into the output
1035 ready: ([$($pub:tt)*] [$($attr:tt)*] [$name:ident]),
1037 output: ($($output:tt)*)) => {
1038 define_map_struct! {
1041 output: ($($output)*
1042 $(#[$attr])* $($pub)* $name: RefCell<QueryMap<queries::$name<$tcx>>>,)
1046 // No modifiers left? This is a private item.
1048 input: (([] $attrs:tt $name:tt) $($input:tt)*),
1049 output: $output:tt) => {
1050 define_map_struct! {
1052 ready: ([] $attrs $name),
1053 input: ($($input)*),
1058 // Skip other modifiers
1060 input: (([$other_modifier:tt $($modifiers:tt)*] $($fields:tt)*) $($input:tt)*),
1061 output: $output:tt) => {
1062 define_map_struct! {
1064 input: (([$($modifiers)*] $($fields)*) $($input)*),
1070 macro_rules! define_provider_struct {
1072 (tcx: $tcx:tt, input: $input:tt) => {
1073 define_provider_struct! {
1083 output: ($(([$name:ident] [$K:ty] [$R:ty]))*)) => {
1084 pub struct Providers<$tcx> {
1085 $(pub $name: for<'a> fn(TyCtxt<'a, $tcx, $tcx>, $K) -> $R,)*
1088 impl<$tcx> Default for Providers<$tcx> {
1089 fn default() -> Self {
1090 $(fn $name<'a, $tcx>(_: TyCtxt<'a, $tcx, $tcx>, key: $K) -> $R {
1091 bug!("tcx.maps.{}({:?}) unsupported by its crate",
1092 stringify!($name), key);
1094 Providers { $($name),* }
1099 // Something ready to shift:
1101 ready: ($name:tt $K:tt $V:tt),
1103 output: ($($output:tt)*)) => {
1104 define_provider_struct! {
1107 output: ($($output)* ($name $K $V))
1111 // Regular queries produce a `V` only.
1113 input: (([] $name:tt $K:tt $V:tt) $($input:tt)*),
1114 output: $output:tt) => {
1115 define_provider_struct! {
1117 ready: ($name $K $V),
1118 input: ($($input)*),
1125 input: (([$other_modifier:tt $($modifiers:tt)*] $($fields:tt)*) $($input:tt)*),
1126 output: $output:tt) => {
1127 define_provider_struct! {
1129 input: (([$($modifiers)*] $($fields)*) $($input)*),
1135 // Each of these maps also corresponds to a method on a
1136 // `Provider` trait for requesting a value of that type,
1137 // and a method on `Maps` itself for doing that in a
1138 // a way that memoizes and does dep-graph tracking,
1139 // wrapping around the actual chain of providers that
1140 // the driver creates (using several `rustc_*` crates).
1141 define_maps! { <'tcx>
1142 /// Records the type of every item.
1143 [] fn type_of: TypeOfItem(DefId) -> Ty<'tcx>,
1145 /// Maps from the def-id of an item (trait/struct/enum/fn) to its
1146 /// associated generics and predicates.
1147 [] fn generics_of: GenericsOfItem(DefId) -> &'tcx ty::Generics,
1148 [] fn predicates_of: PredicatesOfItem(DefId) -> ty::GenericPredicates<'tcx>,
1150 /// Maps from the def-id of a trait to the list of
1151 /// super-predicates. This is a subset of the full list of
1152 /// predicates. We store these in a separate map because we must
1153 /// evaluate them even during type conversion, often before the
1154 /// full predicates are available (note that supertraits have
1155 /// additional acyclicity requirements).
1156 [] fn super_predicates_of: SuperPredicatesOfItem(DefId) -> ty::GenericPredicates<'tcx>,
1158 /// To avoid cycles within the predicates of a single item we compute
1159 /// per-type-parameter predicates for resolving `T::AssocTy`.
1160 [] fn type_param_predicates: type_param_predicates((DefId, DefId))
1161 -> ty::GenericPredicates<'tcx>,
1163 [] fn trait_def: TraitDefOfItem(DefId) -> &'tcx ty::TraitDef,
1164 [] fn adt_def: AdtDefOfItem(DefId) -> &'tcx ty::AdtDef,
1165 [] fn adt_destructor: AdtDestructor(DefId) -> Option<ty::Destructor>,
1166 [] fn adt_sized_constraint: SizedConstraint(DefId) -> &'tcx [Ty<'tcx>],
1167 [] fn adt_dtorck_constraint: DtorckConstraint(DefId) -> ty::DtorckConstraint<'tcx>,
1169 /// True if this is a const fn
1170 [] fn is_const_fn: IsConstFn(DefId) -> bool,
1172 /// True if this is a foreign item (i.e., linked via `extern { ... }`).
1173 [] fn is_foreign_item: IsForeignItem(DefId) -> bool,
1175 /// True if this is a default impl (aka impl Foo for ..)
1176 [] fn is_default_impl: IsDefaultImpl(DefId) -> bool,
1178 /// Get a map with the variance of every item; use `item_variance`
1180 [] fn crate_variances: crate_variances(CrateNum) -> Rc<ty::CrateVariancesMap>,
1182 /// Maps from def-id of a type or region parameter to its
1183 /// (inferred) variance.
1184 [] fn variances_of: ItemVariances(DefId) -> Rc<Vec<ty::Variance>>,
1186 /// Maps from an impl/trait def-id to a list of the def-ids of its items
1187 [] fn associated_item_def_ids: AssociatedItemDefIds(DefId) -> Rc<Vec<DefId>>,
1189 /// Maps from a trait item to the trait item "descriptor"
1190 [] fn associated_item: AssociatedItems(DefId) -> ty::AssociatedItem,
1192 [] fn impl_trait_ref: ImplTraitRef(DefId) -> Option<ty::TraitRef<'tcx>>,
1193 [] fn impl_polarity: ImplPolarity(DefId) -> hir::ImplPolarity,
1195 /// Maps a DefId of a type to a list of its inherent impls.
1196 /// Contains implementations of methods that are inherent to a type.
1197 /// Methods in these implementations don't need to be exported.
1198 [] fn inherent_impls: InherentImpls(DefId) -> Rc<Vec<DefId>>,
1200 /// Set of all the def-ids in this crate that have MIR associated with
1201 /// them. This includes all the body owners, but also things like struct
1203 [] fn mir_keys: mir_keys(CrateNum) -> Rc<DefIdSet>,
1205 /// Maps DefId's that have an associated Mir to the result
1206 /// of the MIR qualify_consts pass. The actual meaning of
1207 /// the value isn't known except to the pass itself.
1208 [] fn mir_const_qualif: MirConstQualif(DefId) -> (u8, Rc<IdxSetBuf<mir::Local>>),
1210 /// Fetch the MIR for a given def-id up till the point where it is
1211 /// ready for const evaluation.
1213 /// See the README for the `mir` module for details.
1214 [] fn mir_const: MirConst(DefId) -> &'tcx Steal<mir::Mir<'tcx>>,
1216 [] fn mir_validated: MirValidated(DefId) -> &'tcx Steal<mir::Mir<'tcx>>,
1218 /// MIR after our optimization passes have run. This is MIR that is ready
1219 /// for trans. This is also the only query that can fetch non-local MIR, at present.
1220 [] fn optimized_mir: MirOptimized(DefId) -> &'tcx mir::Mir<'tcx>,
1222 /// Type of each closure. The def ID is the ID of the
1223 /// expression defining the closure.
1224 [] fn closure_kind: ClosureKind(DefId) -> ty::ClosureKind,
1226 /// The signature of functions and closures.
1227 [] fn fn_sig: FnSignature(DefId) -> ty::PolyFnSig<'tcx>,
1229 /// Records the signature of each generator. The def ID is the ID of the
1230 /// expression defining the closure.
1231 [] fn generator_sig: GenSignature(DefId) -> Option<ty::PolyGenSig<'tcx>>,
1233 /// Caches CoerceUnsized kinds for impls on custom types.
1234 [] fn coerce_unsized_info: CoerceUnsizedInfo(DefId)
1235 -> ty::adjustment::CoerceUnsizedInfo,
1237 [] fn typeck_item_bodies: typeck_item_bodies_dep_node(CrateNum) -> CompileResult,
1239 [] fn typeck_tables_of: TypeckTables(DefId) -> &'tcx ty::TypeckTables<'tcx>,
1241 [] fn has_typeck_tables: HasTypeckTables(DefId) -> bool,
1243 [] fn coherent_trait: coherent_trait_dep_node((CrateNum, DefId)) -> (),
1245 [] fn borrowck: BorrowCheck(DefId) -> (),
1246 // FIXME: shouldn't this return a `Result<(), BorrowckErrors>` instead?
1247 [] fn mir_borrowck: MirBorrowCheck(DefId) -> (),
1249 /// Gets a complete map from all types to their inherent impls.
1250 /// Not meant to be used directly outside of coherence.
1251 /// (Defined only for LOCAL_CRATE)
1252 [] fn crate_inherent_impls: crate_inherent_impls_dep_node(CrateNum) -> CrateInherentImpls,
1254 /// Checks all types in the krate for overlap in their inherent impls. Reports errors.
1255 /// Not meant to be used directly outside of coherence.
1256 /// (Defined only for LOCAL_CRATE)
1257 [] fn crate_inherent_impls_overlap_check: inherent_impls_overlap_check_dep_node(CrateNum) -> (),
1259 /// Results of evaluating const items or constants embedded in
1260 /// other items (such as enum variant explicit discriminants).
1261 [] fn const_eval: const_eval_dep_node(ty::ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>)
1262 -> const_val::EvalResult<'tcx>,
1264 /// Performs the privacy check and computes "access levels".
1265 [] fn privacy_access_levels: PrivacyAccessLevels(CrateNum) -> Rc<AccessLevels>,
1267 [] fn reachable_set: reachability_dep_node(CrateNum) -> Rc<NodeSet>,
1269 /// Per-body `region::ScopeTree`. The `DefId` should be the owner-def-id for the body;
1270 /// in the case of closures, this will be redirected to the enclosing function.
1271 [] fn region_scope_tree: RegionScopeTree(DefId) -> Rc<region::ScopeTree>,
1273 [] fn mir_shims: mir_shim_dep_node(ty::InstanceDef<'tcx>) -> &'tcx mir::Mir<'tcx>,
1275 [] fn def_symbol_name: SymbolName(DefId) -> ty::SymbolName,
1276 [] fn symbol_name: symbol_name_dep_node(ty::Instance<'tcx>) -> ty::SymbolName,
1278 [] fn describe_def: DescribeDef(DefId) -> Option<Def>,
1279 [] fn def_span: DefSpan(DefId) -> Span,
1280 [] fn lookup_stability: LookupStability(DefId) -> Option<&'tcx attr::Stability>,
1281 [] fn lookup_deprecation_entry: LookupDeprecationEntry(DefId) -> Option<DeprecationEntry>,
1282 [] fn item_attrs: ItemAttrs(DefId) -> Rc<[ast::Attribute]>,
1283 [] fn fn_arg_names: FnArgNames(DefId) -> Vec<ast::Name>,
1284 [] fn impl_parent: ImplParent(DefId) -> Option<DefId>,
1285 [] fn trait_of_item: TraitOfItem(DefId) -> Option<DefId>,
1286 [] fn is_exported_symbol: IsExportedSymbol(DefId) -> bool,
1287 [] fn item_body_nested_bodies: ItemBodyNestedBodies(DefId)
1288 -> Rc<BTreeMap<hir::BodyId, hir::Body>>,
1289 [] fn const_is_rvalue_promotable_to_static: ConstIsRvaluePromotableToStatic(DefId) -> bool,
1290 [] fn is_mir_available: IsMirAvailable(DefId) -> bool,
1292 [] fn trait_impls_of: TraitImpls(DefId) -> Rc<ty::trait_def::TraitImpls>,
1293 [] fn specialization_graph_of: SpecializationGraph(DefId) -> Rc<specialization_graph::Graph>,
1294 [] fn is_object_safe: ObjectSafety(DefId) -> bool,
1296 // Get the ParameterEnvironment for a given item; this environment
1297 // will be in "user-facing" mode, meaning that it is suitabe for
1298 // type-checking etc, and it does not normalize specializable
1299 // associated types. This is almost always what you want,
1300 // unless you are doing MIR optimizations, in which case you
1301 // might want to use `reveal_all()` method to change modes.
1302 [] fn param_env: ParamEnv(DefId) -> ty::ParamEnv<'tcx>,
1304 // Trait selection queries. These are best used by invoking `ty.moves_by_default()`,
1305 // `ty.is_copy()`, etc, since that will prune the environment where possible.
1306 [] fn is_copy_raw: is_copy_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
1307 [] fn is_sized_raw: is_sized_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
1308 [] fn is_freeze_raw: is_freeze_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
1309 [] fn needs_drop_raw: needs_drop_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool,
1310 [] fn layout_raw: layout_dep_node(ty::ParamEnvAnd<'tcx, Ty<'tcx>>)
1311 -> Result<&'tcx Layout, LayoutError<'tcx>>,
1313 [] fn dylib_dependency_formats: DylibDepFormats(CrateNum)
1314 -> Rc<Vec<(CrateNum, LinkagePreference)>>,
1316 [] fn is_panic_runtime: IsPanicRuntime(CrateNum) -> bool,
1317 [] fn is_compiler_builtins: IsCompilerBuiltins(CrateNum) -> bool,
1318 [] fn has_global_allocator: HasGlobalAllocator(CrateNum) -> bool,
1319 [] fn is_sanitizer_runtime: IsSanitizerRuntime(CrateNum) -> bool,
1320 [] fn is_profiler_runtime: IsProfilerRuntime(CrateNum) -> bool,
1321 [] fn panic_strategy: GetPanicStrategy(CrateNum) -> PanicStrategy,
1322 [] fn is_no_builtins: IsNoBuiltins(CrateNum) -> bool,
1324 [] fn extern_crate: ExternCrate(DefId) -> Rc<Option<ExternCrate>>,
1326 [] fn specializes: specializes_node((DefId, DefId)) -> bool,
1327 [] fn in_scope_traits_map: InScopeTraits(DefIndex)
1328 -> Option<Rc<FxHashMap<ItemLocalId, Rc<Vec<TraitCandidate>>>>>,
1329 [] fn module_exports: ModuleExports(DefId) -> Option<Rc<Vec<Export>>>,
1330 [] fn lint_levels: lint_levels_node(CrateNum) -> Rc<lint::LintLevelMap>,
1332 [] fn impl_defaultness: ImplDefaultness(DefId) -> hir::Defaultness,
1333 [] fn exported_symbol_ids: ExportedSymbolIds(CrateNum) -> Rc<Vec<DefId>>,
1334 [] fn native_libraries: NativeLibraries(CrateNum) -> Rc<Vec<NativeLibrary>>,
1335 [] fn plugin_registrar_fn: PluginRegistrarFn(CrateNum) -> Option<DefId>,
1336 [] fn derive_registrar_fn: DeriveRegistrarFn(CrateNum) -> Option<DefId>,
1337 [] fn crate_disambiguator: CrateDisambiguator(CrateNum) -> Symbol,
1338 [] fn crate_hash: CrateHash(CrateNum) -> Svh,
1339 [] fn original_crate_name: OriginalCrateName(CrateNum) -> Symbol,
1341 [] fn implementations_of_trait: implementations_of_trait_node((CrateNum, DefId))
1343 [] fn all_trait_implementations: AllTraitImplementations(CrateNum)
1346 [] fn is_dllimport_foreign_item: IsDllimportForeignItem(DefId) -> bool,
1347 [] fn is_statically_included_foreign_item: IsStaticallyIncludedForeignItem(DefId) -> bool,
1348 [] fn native_library_kind: NativeLibraryKind(DefId)
1349 -> Option<NativeLibraryKind>,
1350 [] fn link_args: link_args_node(CrateNum) -> Rc<Vec<String>>,
1352 [] fn named_region_map: NamedRegion(DefIndex) ->
1353 Option<Rc<FxHashMap<ItemLocalId, Region>>>,
1354 [] fn is_late_bound_map: IsLateBound(DefIndex) ->
1355 Option<Rc<FxHashSet<ItemLocalId>>>,
1356 [] fn object_lifetime_defaults_map: ObjectLifetimeDefaults(DefIndex)
1357 -> Option<Rc<FxHashMap<ItemLocalId, Rc<Vec<ObjectLifetimeDefault>>>>>,
1359 [] fn visibility: Visibility(DefId) -> ty::Visibility,
1360 [] fn dep_kind: DepKind(CrateNum) -> DepKind,
1361 [] fn crate_name: CrateName(CrateNum) -> Symbol,
1362 [] fn item_children: ItemChildren(DefId) -> Rc<Vec<Export>>,
1363 [] fn extern_mod_stmt_cnum: ExternModStmtCnum(DefId) -> Option<CrateNum>,
1365 [] fn get_lang_items: get_lang_items_node(CrateNum) -> Rc<LanguageItems>,
1366 [] fn defined_lang_items: DefinedLangItems(CrateNum) -> Rc<Vec<(DefIndex, usize)>>,
1367 [] fn missing_lang_items: MissingLangItems(CrateNum) -> Rc<Vec<LangItem>>,
1368 [] fn extern_const_body: ExternConstBody(DefId) -> &'tcx hir::Body,
1369 [] fn visible_parent_map: visible_parent_map_node(CrateNum)
1370 -> Rc<DefIdMap<DefId>>,
1371 [] fn missing_extern_crate_item: MissingExternCrateItem(CrateNum) -> bool,
1372 [] fn used_crate_source: UsedCrateSource(CrateNum) -> Rc<CrateSource>,
1373 [] fn postorder_cnums: postorder_cnums_node(CrateNum) -> Rc<Vec<CrateNum>>,
1375 [] fn freevars: Freevars(DefId) -> Option<Rc<Vec<hir::Freevar>>>,
1376 [] fn maybe_unused_trait_import: MaybeUnusedTraitImport(DefId) -> bool,
1377 [] fn maybe_unused_extern_crates: maybe_unused_extern_crates_node(CrateNum)
1378 -> Rc<Vec<(DefId, Span)>>,
1380 [] fn stability_index: stability_index_node(CrateNum) -> Rc<stability::Index<'tcx>>,
1381 [] fn all_crate_nums: all_crate_nums_node(CrateNum) -> Rc<Vec<CrateNum>>,
1383 [] fn exported_symbol_set: exported_symbol_set_node(CrateNum)
1384 -> Arc<ExportedSymbols>,
1387 fn type_param_predicates<'tcx>((item_id, param_id): (DefId, DefId)) -> DepConstructor<'tcx> {
1388 DepConstructor::TypeParamPredicates {
1394 fn coherent_trait_dep_node<'tcx>((_, def_id): (CrateNum, DefId)) -> DepConstructor<'tcx> {
1395 DepConstructor::CoherenceCheckTrait(def_id)
1398 fn crate_inherent_impls_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1399 DepConstructor::Coherence
1402 fn inherent_impls_overlap_check_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1403 DepConstructor::CoherenceInherentImplOverlapCheck
1406 fn reachability_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1407 DepConstructor::Reachability
1410 fn mir_shim_dep_node<'tcx>(instance_def: ty::InstanceDef<'tcx>) -> DepConstructor<'tcx> {
1411 DepConstructor::MirShim {
1416 fn symbol_name_dep_node<'tcx>(instance: ty::Instance<'tcx>) -> DepConstructor<'tcx> {
1417 DepConstructor::InstanceSymbolName { instance }
1420 fn typeck_item_bodies_dep_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1421 DepConstructor::TypeckBodiesKrate
1424 fn const_eval_dep_node<'tcx>(_: ty::ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>)
1425 -> DepConstructor<'tcx> {
1426 DepConstructor::ConstEval
1429 fn mir_keys<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1430 DepConstructor::MirKeys
1433 fn crate_variances<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1434 DepConstructor::CrateVariances
1437 fn is_copy_dep_node<'tcx>(_: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
1438 DepConstructor::IsCopy
1441 fn is_sized_dep_node<'tcx>(_: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
1442 DepConstructor::IsSized
1445 fn is_freeze_dep_node<'tcx>(_: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
1446 DepConstructor::IsFreeze
1449 fn needs_drop_dep_node<'tcx>(_: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
1450 DepConstructor::NeedsDrop
1453 fn layout_dep_node<'tcx>(_: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> DepConstructor<'tcx> {
1454 DepConstructor::Layout
1457 fn lint_levels_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1458 DepConstructor::LintLevels
1461 fn specializes_node<'tcx>((a, b): (DefId, DefId)) -> DepConstructor<'tcx> {
1462 DepConstructor::Specializes { impl1: a, impl2: b }
1465 fn implementations_of_trait_node<'tcx>((krate, trait_id): (CrateNum, DefId))
1466 -> DepConstructor<'tcx>
1468 DepConstructor::ImplementationsOfTrait { krate, trait_id }
1471 fn link_args_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1472 DepConstructor::LinkArgs
1475 fn get_lang_items_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1476 DepConstructor::GetLangItems
1479 fn visible_parent_map_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1480 DepConstructor::VisibleParentMap
1483 fn postorder_cnums_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1484 DepConstructor::PostorderCnums
1487 fn maybe_unused_extern_crates_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1488 DepConstructor::MaybeUnusedExternCrates
1491 fn stability_index_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1492 DepConstructor::StabilityIndex
1495 fn all_crate_nums_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1496 DepConstructor::AllCrateNums
1499 fn exported_symbol_set_node<'tcx>(_: CrateNum) -> DepConstructor<'tcx> {
1500 DepConstructor::ExportedSymbols