]>
Commit | Line | Data |
---|---|---|
60c5eb7d | 1 | use crate::creader::{CStore, LoadedMacro}; |
dfeec247 | 2 | use crate::foreign_modules; |
9fa01778 | 3 | use crate::native_libs; |
9ffffee4 FG |
4 | use crate::rmeta::table::IsDefault; |
5 | use crate::rmeta::AttrFlags; | |
92a42be0 | 6 | |
3dfed10e | 7 | use rustc_ast as ast; |
923072b8 | 8 | use rustc_attr::Deprecation; |
5099ac24 | 9 | use rustc_hir::def::{CtorKind, DefKind, Res}; |
04454e1e | 10 | use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LOCAL_CRATE}; |
ba9703b0 | 11 | use rustc_hir::definitions::{DefKey, DefPath, DefPathHash}; |
923072b8 | 12 | use rustc_middle::arena::ArenaAllocatable; |
5099ac24 | 13 | use rustc_middle::metadata::ModChild; |
ba9703b0 | 14 | use rustc_middle::middle::exported_symbols::ExportedSymbol; |
923072b8 | 15 | use rustc_middle::middle::stability::DeprecationEntry; |
353b0b11 | 16 | use rustc_middle::query::LocalCrate; |
5099ac24 | 17 | use rustc_middle::ty::fast_reject::SimplifiedType; |
3c0e092e | 18 | use rustc_middle::ty::query::{ExternProviders, Providers}; |
353b0b11 FG |
19 | use rustc_middle::ty::{self, TyCtxt}; |
20 | use rustc_session::cstore::CrateStore; | |
136023e0 XL |
21 | use rustc_session::{Session, StableCrateId}; |
22 | use rustc_span::hygiene::{ExpnHash, ExpnId}; | |
a2a8927a | 23 | use rustc_span::symbol::{kw, Symbol}; |
353b0b11 | 24 | use rustc_span::Span; |
92a42be0 | 25 | |
dfeec247 | 26 | use rustc_data_structures::sync::Lrc; |
8bb4bdeb | 27 | use std::any::Any; |
92a42be0 | 28 | |
923072b8 FG |
29 | use super::{Decodable, DecodeContext, DecodeIterator}; |
30 | ||
31 | trait ProcessQueryValue<'tcx, T> { | |
32 | fn process_decoded(self, _tcx: TyCtxt<'tcx>, _err: impl Fn() -> !) -> T; | |
33 | } | |
34 | ||
35 | impl<T> ProcessQueryValue<'_, Option<T>> for Option<T> { | |
36 | #[inline(always)] | |
37 | fn process_decoded(self, _tcx: TyCtxt<'_>, _err: impl Fn() -> !) -> Option<T> { | |
38 | self | |
39 | } | |
40 | } | |
41 | ||
42 | impl<T> ProcessQueryValue<'_, T> for Option<T> { | |
43 | #[inline(always)] | |
44 | fn process_decoded(self, _tcx: TyCtxt<'_>, err: impl Fn() -> !) -> T { | |
45 | if let Some(value) = self { value } else { err() } | |
46 | } | |
47 | } | |
48 | ||
49 | impl<'tcx, T: ArenaAllocatable<'tcx>> ProcessQueryValue<'tcx, &'tcx T> for Option<T> { | |
50 | #[inline(always)] | |
51 | fn process_decoded(self, tcx: TyCtxt<'tcx>, err: impl Fn() -> !) -> &'tcx T { | |
52 | if let Some(value) = self { tcx.arena.alloc(value) } else { err() } | |
53 | } | |
54 | } | |
55 | ||
56 | impl<T, E> ProcessQueryValue<'_, Result<Option<T>, E>> for Option<T> { | |
57 | #[inline(always)] | |
58 | fn process_decoded(self, _tcx: TyCtxt<'_>, _err: impl Fn() -> !) -> Result<Option<T>, E> { | |
59 | Ok(self) | |
60 | } | |
61 | } | |
62 | ||
63 | impl<'a, 'tcx, T: Copy + Decodable<DecodeContext<'a, 'tcx>>> ProcessQueryValue<'tcx, &'tcx [T]> | |
64 | for Option<DecodeIterator<'a, 'tcx, T>> | |
65 | { | |
66 | #[inline(always)] | |
67 | fn process_decoded(self, tcx: TyCtxt<'tcx>, _err: impl Fn() -> !) -> &'tcx [T] { | |
68 | if let Some(iter) = self { tcx.arena.alloc_from_iter(iter) } else { &[] } | |
69 | } | |
70 | } | |
71 | ||
72 | impl ProcessQueryValue<'_, Option<DeprecationEntry>> for Option<Deprecation> { | |
73 | #[inline(always)] | |
74 | fn process_decoded(self, _tcx: TyCtxt<'_>, _err: impl Fn() -> !) -> Option<DeprecationEntry> { | |
75 | self.map(DeprecationEntry::external) | |
76 | } | |
77 | } | |
78 | ||
5e7ed085 | 79 | macro_rules! provide_one { |
f2b60f7d | 80 | ($tcx:ident, $def_id:ident, $other:ident, $cdata:ident, $name:ident => { table }) => { |
5e7ed085 | 81 | provide_one! { |
f2b60f7d | 82 | $tcx, $def_id, $other, $cdata, $name => { |
923072b8 FG |
83 | $cdata |
84 | .root | |
85 | .tables | |
86 | .$name | |
87 | .get($cdata, $def_id.index) | |
88 | .map(|lazy| lazy.decode(($cdata, $tcx))) | |
89 | .process_decoded($tcx, || panic!("{:?} does not have a {:?}", $def_id, stringify!($name))) | |
90 | } | |
91 | } | |
92 | }; | |
9ffffee4 FG |
93 | ($tcx:ident, $def_id:ident, $other:ident, $cdata:ident, $name:ident => { table_defaulted_array }) => { |
94 | provide_one! { | |
95 | $tcx, $def_id, $other, $cdata, $name => { | |
96 | let lazy = $cdata.root.tables.$name.get($cdata, $def_id.index); | |
97 | if lazy.is_default() { &[] } else { $tcx.arena.alloc_from_iter(lazy.decode(($cdata, $tcx))) } | |
98 | } | |
99 | } | |
100 | }; | |
f2b60f7d | 101 | ($tcx:ident, $def_id:ident, $other:ident, $cdata:ident, $name:ident => { table_direct }) => { |
923072b8 | 102 | provide_one! { |
f2b60f7d | 103 | $tcx, $def_id, $other, $cdata, $name => { |
923072b8 FG |
104 | // We don't decode `table_direct`, since it's not a Lazy, but an actual value |
105 | $cdata | |
106 | .root | |
107 | .tables | |
108 | .$name | |
109 | .get($cdata, $def_id.index) | |
110 | .process_decoded($tcx, || panic!("{:?} does not have a {:?}", $def_id, stringify!($name))) | |
5e7ed085 FG |
111 | } |
112 | } | |
113 | }; | |
f2b60f7d FG |
114 | ($tcx:ident, $def_id:ident, $other:ident, $cdata:ident, $name:ident => $compute:block) => { |
115 | fn $name<'tcx>( | |
116 | $tcx: TyCtxt<'tcx>, | |
117 | def_id_arg: ty::query::query_keys::$name<'tcx>, | |
9ffffee4 | 118 | ) -> ty::query::query_provided::$name<'tcx> { |
5e7ed085 FG |
119 | let _prof_timer = |
120 | $tcx.prof.generic_activity(concat!("metadata_decode_entry_", stringify!($name))); | |
121 | ||
122 | #[allow(unused_variables)] | |
123 | let ($def_id, $other) = def_id_arg.into_args(); | |
124 | assert!(!$def_id.is_local()); | |
125 | ||
126 | // External query providers call `crate_hash` in order to register a dependency | |
127 | // on the crate metadata. The exception is `crate_hash` itself, which obviously | |
128 | // doesn't need to do this (and can't, as it would cause a query cycle). | |
129 | use rustc_middle::dep_graph::DepKind; | |
130 | if DepKind::$name != DepKind::crate_hash && $tcx.dep_graph.is_fully_enabled() { | |
131 | $tcx.ensure().crate_hash($def_id.krate); | |
132 | } | |
133 | ||
9ffffee4 FG |
134 | let cdata = rustc_data_structures::sync::MappedReadGuard::map(CStore::from_tcx($tcx), |c| { |
135 | c.get_crate_data($def_id.krate).cdata | |
136 | }); | |
137 | let $cdata = crate::creader::CrateMetadataRef { | |
138 | cdata: &cdata, | |
139 | cstore: &CStore::from_tcx($tcx), | |
140 | }; | |
5e7ed085 FG |
141 | |
142 | $compute | |
143 | } | |
144 | }; | |
145 | } | |
146 | ||
8bb4bdeb | 147 | macro_rules! provide { |
f2b60f7d | 148 | ($tcx:ident, $def_id:ident, $other:ident, $cdata:ident, |
5e7ed085 | 149 | $($name:ident => { $($compute:tt)* })*) => { |
3c0e092e | 150 | pub fn provide_extern(providers: &mut ExternProviders) { |
5e7ed085 | 151 | $(provide_one! { |
f2b60f7d | 152 | $tcx, $def_id, $other, $cdata, $name => { $($compute)* } |
8bb4bdeb XL |
153 | })* |
154 | ||
3c0e092e | 155 | *providers = ExternProviders { |
8bb4bdeb XL |
156 | $($name,)* |
157 | ..*providers | |
158 | }; | |
159 | } | |
9e0c209e | 160 | } |
8bb4bdeb | 161 | } |
9e0c209e | 162 | |
ea8adc8c XL |
163 | // small trait to work around different signature queries all being defined via |
164 | // the macro above. | |
165 | trait IntoArgs { | |
5e7ed085 FG |
166 | type Other; |
167 | fn into_args(self) -> (DefId, Self::Other); | |
ea8adc8c XL |
168 | } |
169 | ||
170 | impl IntoArgs for DefId { | |
5e7ed085 FG |
171 | type Other = (); |
172 | fn into_args(self) -> (DefId, ()) { | |
173 | (self, ()) | |
dfeec247 | 174 | } |
ea8adc8c XL |
175 | } |
176 | ||
177 | impl IntoArgs for CrateNum { | |
5e7ed085 FG |
178 | type Other = (); |
179 | fn into_args(self) -> (DefId, ()) { | |
180 | (self.as_def_id(), ()) | |
dfeec247 | 181 | } |
ea8adc8c XL |
182 | } |
183 | ||
184 | impl IntoArgs for (CrateNum, DefId) { | |
5e7ed085 | 185 | type Other = DefId; |
dfeec247 XL |
186 | fn into_args(self) -> (DefId, DefId) { |
187 | (self.0.as_def_id(), self.1) | |
188 | } | |
ea8adc8c XL |
189 | } |
190 | ||
a2a8927a | 191 | impl<'tcx> IntoArgs for ty::InstanceDef<'tcx> { |
5e7ed085 FG |
192 | type Other = (); |
193 | fn into_args(self) -> (DefId, ()) { | |
194 | (self.def_id(), ()) | |
195 | } | |
196 | } | |
197 | ||
198 | impl IntoArgs for (CrateNum, SimplifiedType) { | |
199 | type Other = SimplifiedType; | |
200 | fn into_args(self) -> (DefId, SimplifiedType) { | |
201 | (self.0.as_def_id(), self.1) | |
c295e0f8 XL |
202 | } |
203 | } | |
204 | ||
f2b60f7d | 205 | provide! { tcx, def_id, other, cdata, |
9ffffee4 | 206 | explicit_item_bounds => { table_defaulted_array } |
5e7ed085 FG |
207 | explicit_predicates_of => { table } |
208 | generics_of => { table } | |
9ffffee4 | 209 | inferred_outlives_of => { table_defaulted_array } |
5e7ed085 FG |
210 | super_predicates_of => { table } |
211 | type_of => { table } | |
212 | variances_of => { table } | |
213 | fn_sig => { table } | |
04454e1e | 214 | codegen_fn_attrs => { table } |
5e7ed085 FG |
215 | impl_trait_ref => { table } |
216 | const_param_default => { table } | |
f2b60f7d | 217 | object_lifetime_default => { table } |
5e7ed085 FG |
218 | thir_abstract_const => { table } |
219 | optimized_mir => { table } | |
220 | mir_for_ctfe => { table } | |
9ffffee4 | 221 | mir_generator_witnesses => { table } |
5e7ed085 FG |
222 | promoted_mir => { table } |
223 | def_span => { table } | |
224 | def_ident_span => { table } | |
225 | lookup_stability => { table } | |
226 | lookup_const_stability => { table } | |
f2b60f7d | 227 | lookup_default_body_stability => { table } |
5e7ed085 | 228 | lookup_deprecation_entry => { table } |
2b03887a | 229 | params_in_repr => { table } |
353b0b11 | 230 | unused_generic_params => { cdata.root.tables.unused_generic_params.get(cdata, def_id.index) } |
923072b8 | 231 | opt_def_kind => { table_direct } |
5e7ed085 | 232 | impl_parent => { table } |
923072b8 FG |
233 | impl_polarity => { table_direct } |
234 | impl_defaultness => { table_direct } | |
235 | constness => { table_direct } | |
5e7ed085 FG |
236 | coerce_unsized_info => { table } |
237 | mir_const_qualif => { table } | |
238 | rendered_const => { table } | |
923072b8 | 239 | asyncness => { table_direct } |
5e7ed085 FG |
240 | fn_arg_names => { table } |
241 | generator_kind => { table } | |
242 | trait_def => { table } | |
2b03887a | 243 | deduced_param_attrs => { table } |
487cf647 FG |
244 | is_type_alias_impl_trait => { |
245 | debug_assert_eq!(tcx.def_kind(def_id), DefKind::OpaqueTy); | |
9ffffee4 | 246 | cdata.root.tables.is_type_alias_impl_trait.get(cdata, def_id.index) |
487cf647 | 247 | } |
9c376795 | 248 | collect_return_position_impl_trait_in_trait_tys => { |
2b03887a FG |
249 | Ok(cdata |
250 | .root | |
251 | .tables | |
252 | .trait_impl_trait_tys | |
253 | .get(cdata, def_id.index) | |
254 | .map(|lazy| lazy.decode((cdata, tcx))) | |
9c376795 | 255 | .process_decoded(tcx, || panic!("{def_id:?} does not have trait_impl_trait_tys"))) |
353b0b11 FG |
256 | } |
257 | implied_predicates_of => { | |
258 | cdata | |
259 | .root | |
260 | .tables | |
261 | .implied_predicates_of | |
262 | .get(cdata, def_id.index) | |
263 | .map(|lazy| lazy.decode((cdata, tcx))) | |
264 | .unwrap_or_else(|| { | |
265 | debug_assert_eq!(tcx.def_kind(def_id), DefKind::Trait); | |
266 | tcx.super_predicates_of(def_id) | |
267 | }) | |
268 | } | |
5e7ed085 | 269 | |
353b0b11 | 270 | associated_types_for_impl_traits_in_associated_fn => { table_defaulted_array } |
9ffffee4 | 271 | |
f2b60f7d | 272 | visibility => { cdata.get_visibility(def_id.index) } |
8bb4bdeb XL |
273 | adt_def => { cdata.get_adt_def(def_id.index, tcx) } |
274 | adt_destructor => { | |
275 | let _ = cdata; | |
29967ef6 | 276 | tcx.calculate_dtor(def_id, |_,_| Ok(())) |
92a42be0 | 277 | } |
04454e1e FG |
278 | associated_item_def_ids => { |
279 | tcx.arena.alloc_from_iter(cdata.get_associated_item_def_ids(def_id.index, tcx.sess)) | |
280 | } | |
f2b60f7d | 281 | associated_item => { cdata.get_associated_item(def_id.index, tcx.sess) } |
dc9dc135 | 282 | inherent_impls => { cdata.get_inherent_implementations_for_type(tcx, def_id.index) } |
cc61c64b | 283 | is_foreign_item => { cdata.is_foreign_item(def_id.index) } |
a2a8927a | 284 | item_attrs => { tcx.arena.alloc_from_iter(cdata.get_item_attrs(def_id.index, tcx.sess)) } |
7cac9316 | 285 | is_mir_available => { cdata.is_item_mir_available(def_id.index) } |
5869c6ff | 286 | is_ctfe_mir_available => { cdata.is_ctfe_mir_available(def_id.index) } |
041b39d2 | 287 | |
dc9dc135 | 288 | dylib_dependency_formats => { cdata.get_dylib_dependency_formats(tcx) } |
17df50a5 | 289 | is_private_dep => { cdata.private_dep } |
94b46f34 XL |
290 | is_panic_runtime => { cdata.root.panic_runtime } |
291 | is_compiler_builtins => { cdata.root.compiler_builtins } | |
292 | has_global_allocator => { cdata.root.has_global_allocator } | |
487cf647 | 293 | has_alloc_error_handler => { cdata.root.has_alloc_error_handler } |
b7449926 | 294 | has_panic_handler => { cdata.root.has_panic_handler } |
94b46f34 | 295 | is_profiler_runtime => { cdata.root.profiler_runtime } |
064997fb | 296 | required_panic_strategy => { cdata.root.required_panic_strategy } |
c295e0f8 | 297 | panic_in_drop_strategy => { cdata.root.panic_in_drop_strategy } |
0531ce1d | 298 | extern_crate => { |
dc9dc135 XL |
299 | let r = *cdata.extern_crate.lock(); |
300 | r.map(|c| &*tcx.arena.alloc(c)) | |
0531ce1d | 301 | } |
94b46f34 | 302 | is_no_builtins => { cdata.root.no_builtins } |
dc9dc135 | 303 | symbol_mangling_version => { cdata.root.symbol_mangling_version } |
0531ce1d XL |
304 | reachable_non_generics => { |
305 | let reachable_non_generics = tcx | |
306 | .exported_symbols(cdata.cnum) | |
307 | .iter() | |
04454e1e | 308 | .filter_map(|&(exported_symbol, export_info)| { |
0531ce1d | 309 | if let ExportedSymbol::NonGeneric(def_id) = exported_symbol { |
04454e1e | 310 | Some((def_id, export_info)) |
0531ce1d XL |
311 | } else { |
312 | None | |
313 | } | |
314 | }) | |
315 | .collect(); | |
316 | ||
f9f354fc | 317 | reachable_non_generics |
0531ce1d | 318 | } |
5099ac24 FG |
319 | native_libraries => { cdata.get_native_libraries(tcx.sess).collect() } |
320 | foreign_modules => { cdata.get_foreign_modules(tcx.sess).map(|m| (m.def_id, m)).collect() } | |
94b46f34 | 321 | crate_hash => { cdata.root.hash } |
60c5eb7d | 322 | crate_host_hash => { cdata.host_hash } |
17df50a5 | 323 | crate_name => { cdata.root.name } |
ea8adc8c | 324 | |
83c7162d XL |
325 | extra_filename => { cdata.root.extra_filename.clone() } |
326 | ||
a2a8927a | 327 | traits_in_crate => { tcx.arena.alloc_from_iter(cdata.get_traits()) } |
9ffffee4 | 328 | trait_impls_in_crate => { tcx.arena.alloc_from_iter(cdata.get_trait_impls()) } |
a2a8927a | 329 | implementations_of_trait => { cdata.get_implementations_of_trait(tcx, other) } |
5e7ed085 | 330 | crate_incoherent_impls => { cdata.get_incoherent_impls(tcx, other) } |
ea8adc8c | 331 | |
0531ce1d XL |
332 | dep_kind => { |
333 | let r = *cdata.dep_kind.lock(); | |
334 | r | |
335 | } | |
5099ac24 | 336 | module_children => { |
487cf647 | 337 | tcx.arena.alloc_from_iter(cdata.get_module_children(def_id.index, tcx.sess)) |
ea8adc8c | 338 | } |
dc9dc135 | 339 | defined_lib_features => { cdata.get_lib_features(tcx) } |
064997fb FG |
340 | stability_implications => { |
341 | cdata.get_stability_implications(tcx).iter().copied().collect() | |
342 | } | |
923072b8 | 343 | is_intrinsic => { cdata.get_is_intrinsic(def_id.index) } |
5e7ed085 | 344 | defined_lang_items => { cdata.get_lang_items(tcx) } |
f9f354fc | 345 | diagnostic_items => { cdata.get_diagnostic_items() } |
dc9dc135 | 346 | missing_lang_items => { cdata.get_missing_lang_items(tcx) } |
ea8adc8c | 347 | |
ea8adc8c | 348 | missing_extern_crate_item => { |
29967ef6 | 349 | let r = matches!(*cdata.extern_crate.borrow(), Some(extern_crate) if !extern_crate.is_direct()); |
0531ce1d | 350 | r |
ea8adc8c XL |
351 | } |
352 | ||
5099ac24 | 353 | used_crate_source => { Lrc::clone(&cdata.source) } |
04454e1e | 354 | debugger_visualizers => { cdata.get_debugger_visualizers() } |
ea8adc8c | 355 | |
e74abb32 XL |
356 | exported_symbols => { |
357 | let syms = cdata.exported_symbols(tcx); | |
358 | ||
359 | // FIXME rust-lang/rust#64319, rust-lang/rust#64872: We want | |
360 | // to block export of generics from dylibs, but we must fix | |
361 | // rust-lang/rust#65890 before we can do that robustly. | |
362 | ||
ba9703b0 | 363 | syms |
e74abb32 | 364 | } |
f035d41b XL |
365 | |
366 | crate_extern_paths => { cdata.source().paths().cloned().collect() } | |
29967ef6 | 367 | expn_that_defined => { cdata.get_expn_that_defined(def_id.index, tcx.sess) } |
04454e1e | 368 | generator_diagnostic_data => { cdata.get_generator_diagnostic_data(tcx, def_id.index) } |
9ffffee4 FG |
369 | is_doc_hidden => { cdata.get_attr_flags(def_id.index).contains(AttrFlags::IS_DOC_HIDDEN) } |
370 | doc_link_resolutions => { tcx.arena.alloc(cdata.get_doc_link_resolutions(def_id.index)) } | |
371 | doc_link_traits_in_scope => { | |
372 | tcx.arena.alloc_from_iter(cdata.get_doc_link_traits_in_scope(def_id.index)) | |
373 | } | |
041b39d2 XL |
374 | } |
375 | ||
a2a8927a | 376 | pub(in crate::rmeta) fn provide(providers: &mut Providers) { |
ea8adc8c XL |
377 | // FIXME(#44234) - almost all of these queries have no sub-queries and |
378 | // therefore no actual inputs, they're just reading tables calculated in | |
379 | // resolve! Does this work? Unsure! That's what the issue is about | |
041b39d2 | 380 | *providers = Providers { |
136023e0 | 381 | allocator_kind: |tcx, ()| CStore::from_tcx(tcx).allocator_kind(), |
487cf647 | 382 | alloc_error_handler_kind: |tcx, ()| CStore::from_tcx(tcx).alloc_error_handler_kind(), |
353b0b11 | 383 | is_private_dep: |_tcx, LocalCrate| false, |
f2b60f7d | 384 | native_library: |tcx, id| { |
ea8adc8c XL |
385 | tcx.native_libraries(id.krate) |
386 | .iter() | |
387 | .filter(|lib| native_libs::relevant_lib(&tcx.sess, lib)) | |
0531ce1d | 388 | .find(|lib| { |
5e7ed085 FG |
389 | let Some(fm_id) = lib.foreign_module else { |
390 | return false; | |
0531ce1d | 391 | }; |
29967ef6 XL |
392 | let map = tcx.foreign_modules(id.krate); |
393 | map.get(&fm_id) | |
0531ce1d XL |
394 | .expect("failed to find foreign module") |
395 | .foreign_items | |
396 | .contains(&id) | |
397 | }) | |
ea8adc8c | 398 | }, |
353b0b11 FG |
399 | native_libraries: |tcx, LocalCrate| native_libs::collect(tcx), |
400 | foreign_modules: |tcx, LocalCrate| { | |
5099ac24 | 401 | foreign_modules::collect(tcx).into_iter().map(|m| (m.def_id, m)).collect() |
ea8adc8c | 402 | }, |
ea8adc8c | 403 | |
0731742a | 404 | // Returns a map from a sufficiently visible external item (i.e., an |
ea8adc8c XL |
405 | // external item that is visible from at least one local module) to a |
406 | // sufficiently visible parent (considering modules that re-export the | |
407 | // external item to be parents). | |
17df50a5 | 408 | visible_parent_map: |tcx, ()| { |
ea8adc8c | 409 | use std::collections::hash_map::Entry; |
dfeec247 | 410 | use std::collections::vec_deque::VecDeque; |
ea8adc8c | 411 | |
a1dfa0c6 | 412 | let mut visible_parent_map: DefIdMap<DefId> = Default::default(); |
064997fb FG |
413 | // This is a secondary visible_parent_map, storing the DefId of |
414 | // parents that re-export the child as `_` or module parents | |
415 | // which are `#[doc(hidden)]`. Since we prefer paths that don't | |
416 | // do this, merge this map at the end, only if we're missing | |
417 | // keys from the former. | |
418 | // This is a rudimentary check that does not catch all cases, | |
419 | // just the easiest. | |
9c376795 | 420 | let mut fallback_map: Vec<(DefId, DefId)> = Default::default(); |
ea8adc8c | 421 | |
ff7c6d11 XL |
422 | // Issue 46112: We want the map to prefer the shortest |
423 | // paths when reporting the path to an item. Therefore we | |
424 | // build up the map via a breadth-first search (BFS), | |
425 | // which naturally yields minimal-length paths. | |
426 | // | |
427 | // Note that it needs to be a BFS over the whole forest of | |
428 | // crates, not just each individual crate; otherwise you | |
429 | // only get paths that are locally minimal with respect to | |
430 | // whatever crate we happened to encounter first in this | |
431 | // traversal, but not globally minimal across all crates. | |
432 | let bfs_queue = &mut VecDeque::new(); | |
433 | ||
c295e0f8 | 434 | for &cnum in tcx.crates(()) { |
ea8adc8c XL |
435 | // Ignore crates without a corresponding local `extern crate` item. |
436 | if tcx.missing_extern_crate_item(cnum) { | |
dfeec247 | 437 | continue; |
ea8adc8c XL |
438 | } |
439 | ||
04454e1e | 440 | bfs_queue.push_back(cnum.as_def_id()); |
ff7c6d11 XL |
441 | } |
442 | ||
5099ac24 FG |
443 | let mut add_child = |bfs_queue: &mut VecDeque<_>, child: &ModChild, parent: DefId| { |
444 | if !child.vis.is_public() { | |
c295e0f8 XL |
445 | return; |
446 | } | |
ea8adc8c | 447 | |
5099ac24 FG |
448 | if let Some(def_id) = child.res.opt_def_id() { |
449 | if child.ident.name == kw::Underscore { | |
9c376795 | 450 | fallback_map.push((def_id, parent)); |
a2a8927a XL |
451 | return; |
452 | } | |
453 | ||
9ffffee4 | 454 | if tcx.is_doc_hidden(parent) { |
9c376795 | 455 | fallback_map.push((def_id, parent)); |
064997fb FG |
456 | return; |
457 | } | |
458 | ||
5099ac24 | 459 | match visible_parent_map.entry(def_id) { |
c295e0f8 XL |
460 | Entry::Occupied(mut entry) => { |
461 | // If `child` is defined in crate `cnum`, ensure | |
462 | // that it is mapped to a parent in `cnum`. | |
5099ac24 | 463 | if def_id.is_local() && entry.get().is_local() { |
c295e0f8 | 464 | entry.insert(parent); |
dc9dc135 | 465 | } |
ea8adc8c | 466 | } |
c295e0f8 XL |
467 | Entry::Vacant(entry) => { |
468 | entry.insert(parent); | |
5099ac24 FG |
469 | if matches!( |
470 | child.res, | |
471 | Res::Def(DefKind::Mod | DefKind::Enum | DefKind::Trait, _) | |
472 | ) { | |
473 | bfs_queue.push_back(def_id); | |
474 | } | |
c295e0f8 | 475 | } |
ea8adc8c XL |
476 | } |
477 | } | |
c295e0f8 XL |
478 | }; |
479 | ||
480 | while let Some(def) = bfs_queue.pop_front() { | |
5099ac24 | 481 | for child in tcx.module_children(def).iter() { |
c295e0f8 XL |
482 | add_child(bfs_queue, child, def); |
483 | } | |
ea8adc8c XL |
484 | } |
485 | ||
064997fb FG |
486 | // Fill in any missing entries with the less preferable path. |
487 | // If this path re-exports the child as `_`, we still use this | |
488 | // path in a diagnostic that suggests importing `::*`. | |
9c376795 | 489 | |
a2a8927a XL |
490 | for (child, parent) in fallback_map { |
491 | visible_parent_map.entry(child).or_insert(parent); | |
492 | } | |
493 | ||
f9f354fc | 494 | visible_parent_map |
ea8adc8c XL |
495 | }, |
496 | ||
17df50a5 | 497 | dependency_formats: |tcx, ()| Lrc::new(crate::dependency_format::calculate(tcx)), |
353b0b11 FG |
498 | has_global_allocator: |tcx, LocalCrate| CStore::from_tcx(tcx).has_global_allocator(), |
499 | has_alloc_error_handler: |tcx, LocalCrate| CStore::from_tcx(tcx).has_alloc_error_handler(), | |
17df50a5 XL |
500 | postorder_cnums: |tcx, ()| { |
501 | tcx.arena | |
502 | .alloc_slice(&CStore::from_tcx(tcx).crate_dependencies_in_postorder(LOCAL_CRATE)) | |
60c5eb7d | 503 | }, |
353b0b11 FG |
504 | crates: |tcx, ()| { |
505 | // The list of loaded crates is now frozen in query cache, | |
506 | // so make sure cstore is not mutably accessed from here on. | |
507 | tcx.untracked().cstore.leak(); | |
508 | tcx.arena.alloc_from_iter(CStore::from_tcx(tcx).iter_crate_data().map(|(cnum, _)| cnum)) | |
509 | }, | |
041b39d2 XL |
510 | ..*providers |
511 | }; | |
8bb4bdeb | 512 | } |
92a42be0 | 513 | |
60c5eb7d | 514 | impl CStore { |
487cf647 FG |
515 | pub fn ctor_untracked(&self, def: DefId) -> Option<(CtorKind, DefId)> { |
516 | self.get_crate_data(def.krate).get_ctor(def.index) | |
17df50a5 XL |
517 | } |
518 | ||
487cf647 FG |
519 | pub fn module_children_untracked<'a>( |
520 | &'a self, | |
521 | def_id: DefId, | |
522 | sess: &'a Session, | |
523 | ) -> impl Iterator<Item = ModChild> + 'a { | |
524 | self.get_crate_data(def_id.krate).get_module_children(def_id.index, sess) | |
92a42be0 SL |
525 | } |
526 | ||
b7449926 | 527 | pub fn load_macro_untracked(&self, id: DefId, sess: &Session) -> LoadedMacro { |
e74abb32 XL |
528 | let _prof_timer = sess.prof.generic_activity("metadata_load_macro"); |
529 | ||
476ff2be | 530 | let data = self.get_crate_data(id.krate); |
60c5eb7d | 531 | if data.root.is_proc_macro_crate() { |
136023e0 | 532 | return LoadedMacro::ProcMacro(data.load_proc_macro(id.index, sess)); |
476ff2be SL |
533 | } |
534 | ||
ba9703b0 | 535 | let span = data.get_span(id.index, sess); |
476ff2be | 536 | |
dfeec247 XL |
537 | LoadedMacro::MacroDef( |
538 | ast::Item { | |
a2a8927a | 539 | ident: data.item_ident(id.index, sess), |
dfeec247 | 540 | id: ast::DUMMY_NODE_ID, |
ba9703b0 | 541 | span, |
a2a8927a | 542 | attrs: data.get_item_attrs(id.index, sess).collect(), |
ba9703b0 | 543 | kind: ast::ItemKind::MacroDef(data.get_macro(id.index, sess)), |
1b1a35ee XL |
544 | vis: ast::Visibility { |
545 | span: span.shrink_to_lo(), | |
546 | kind: ast::VisibilityKind::Inherited, | |
547 | tokens: None, | |
548 | }, | |
dfeec247 XL |
549 | tokens: None, |
550 | }, | |
551 | data.root.edition, | |
552 | ) | |
476ff2be SL |
553 | } |
554 | ||
353b0b11 | 555 | pub fn def_span_untracked(&self, def_id: DefId, sess: &Session) -> Span { |
dfeec247 XL |
556 | self.get_crate_data(def_id.krate).get_span(def_id.index, sess) |
557 | } | |
558 | ||
353b0b11 | 559 | pub fn def_kind_untracked(&self, def: DefId) -> DefKind { |
136023e0 XL |
560 | self.get_crate_data(def.krate).def_kind(def.index) |
561 | } | |
562 | ||
353b0b11 FG |
563 | pub fn expn_that_defined_untracked(&self, def_id: DefId, sess: &Session) -> ExpnId { |
564 | self.get_crate_data(def_id.krate).get_expn_that_defined(def_id.index, sess) | |
3dfed10e | 565 | } |
fc512014 | 566 | |
17df50a5 XL |
567 | /// Only public-facing way to traverse all the definitions in a non-local crate. |
568 | /// Critically useful for this third-party project: <https://github.com/hacspec/hacspec>. | |
569 | /// See <https://github.com/rust-lang/rust/pull/85889> for context. | |
570 | pub fn num_def_ids_untracked(&self, cnum: CrateNum) -> usize { | |
fc512014 XL |
571 | self.get_crate_data(cnum).num_def_ids() |
572 | } | |
6a06907d | 573 | |
17df50a5 XL |
574 | pub fn get_proc_macro_quoted_span_untracked( |
575 | &self, | |
576 | cnum: CrateNum, | |
577 | id: usize, | |
578 | sess: &Session, | |
579 | ) -> Span { | |
580 | self.get_crate_data(cnum).get_proc_macro_quoted_span(id, sess) | |
581 | } | |
b7449926 XL |
582 | } |
583 | ||
60c5eb7d XL |
584 | impl CrateStore for CStore { |
585 | fn as_any(&self) -> &dyn Any { | |
586 | self | |
b7449926 | 587 | } |
9c376795 FG |
588 | fn untracked_as_any(&mut self) -> &mut dyn Any { |
589 | self | |
590 | } | |
b7449926 | 591 | |
136023e0 | 592 | fn crate_name(&self, cnum: CrateNum) -> Symbol { |
e74abb32 | 593 | self.get_crate_data(cnum).root.name |
b7449926 XL |
594 | } |
595 | ||
136023e0 XL |
596 | fn stable_crate_id(&self, cnum: CrateNum) -> StableCrateId { |
597 | self.get_crate_data(cnum).root.stable_crate_id | |
b7449926 XL |
598 | } |
599 | ||
c295e0f8 | 600 | fn stable_crate_id_to_crate_num(&self, stable_crate_id: StableCrateId) -> CrateNum { |
353b0b11 FG |
601 | *self |
602 | .stable_crate_ids | |
603 | .get(&stable_crate_id) | |
604 | .unwrap_or_else(|| bug!("uninterned StableCrateId: {stable_crate_id:?}")) | |
c295e0f8 XL |
605 | } |
606 | ||
b7449926 XL |
607 | /// Returns the `DefKey` for a given `DefId`. This indicates the |
608 | /// parent `DefId` as well as some idea of what kind of data the | |
609 | /// `DefId` refers to. | |
610 | fn def_key(&self, def: DefId) -> DefKey { | |
b7449926 XL |
611 | self.get_crate_data(def.krate).def_key(def.index) |
612 | } | |
613 | ||
614 | fn def_path(&self, def: DefId) -> DefPath { | |
b7449926 XL |
615 | self.get_crate_data(def.krate).def_path(def.index) |
616 | } | |
617 | ||
618 | fn def_path_hash(&self, def: DefId) -> DefPathHash { | |
619 | self.get_crate_data(def.krate).def_path_hash(def.index) | |
620 | } | |
621 | ||
c295e0f8 XL |
622 | fn def_path_hash_to_def_id(&self, cnum: CrateNum, hash: DefPathHash) -> DefId { |
623 | let def_index = self.get_crate_data(cnum).def_path_hash_to_def_index(hash); | |
624 | DefId { krate: cnum, index: def_index } | |
625 | } | |
626 | ||
627 | fn expn_hash_to_expn_id( | |
fc512014 | 628 | &self, |
c295e0f8 | 629 | sess: &Session, |
fc512014 XL |
630 | cnum: CrateNum, |
631 | index_guess: u32, | |
c295e0f8 XL |
632 | hash: ExpnHash, |
633 | ) -> ExpnId { | |
634 | self.get_crate_data(cnum).expn_hash_to_expn_id(sess, index_guess, hash) | |
92a42be0 | 635 | } |
a2a8927a XL |
636 | |
637 | fn import_source_files(&self, sess: &Session, cnum: CrateNum) { | |
f2b60f7d FG |
638 | let cdata = self.get_crate_data(cnum); |
639 | for file_index in 0..cdata.root.source_map.size() { | |
640 | cdata.imported_source_file(file_index as u32, sess); | |
641 | } | |
a2a8927a | 642 | } |
92a42be0 | 643 | } |