1 // Copyright 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 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
12 // file at the top-level directory of this distribution and at
13 // http://rust-lang.org/COPYRIGHT.
15 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
16 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
17 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
18 // option. This file may not be copied, modified, or distributed
19 // except according to those terms.
21 // the rustc crate store interface. This also includes types that
22 // are *mostly* used as a part of that interface, but these should
23 // probably get a better home if someone can find one.
25 use hir::def::{self, Def};
26 use hir::def_id::{CrateNum, DefId, DefIndex};
27 use hir::map as hir_map;
28 use hir::map::definitions::{Definitions, DefKey, DisambiguatedDefPathData};
30 use middle::lang_items;
31 use ty::{self, Ty, TyCtxt};
34 use session::search_paths::PathKind;
35 use util::nodemap::{NodeSet, DefIdMap};
37 use std::collections::BTreeMap;
38 use std::path::PathBuf;
42 use syntax::ext::base::SyntaxExtension;
43 use syntax::symbol::Symbol;
45 use rustc_back::target::Target;
47 use rustc_back::PanicStrategy;
49 pub use self::NativeLibraryKind::{NativeStatic, NativeFramework, NativeUnknown};
51 // lonely orphan structs and enums looking for a better home
53 #[derive(Clone, Debug)]
55 pub crate_name: Symbol,
59 // Where a crate came from on the local filesystem. One of these three options
61 #[derive(PartialEq, Clone, Debug)]
62 pub struct CrateSource {
63 pub dylib: Option<(PathBuf, PathKind)>,
64 pub rlib: Option<(PathBuf, PathKind)>,
65 pub rmeta: Option<(PathBuf, PathKind)>,
68 #[derive(RustcEncodable, RustcDecodable, Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Debug)]
70 /// A dependency that is only used for its macros, none of which are visible from other crates.
71 /// These are included in the metadata only as placeholders and are ignored when decoding.
73 /// A dependency that is only used for its macros.
75 /// A dependency that is always injected into the dependency list and so
76 /// doesn't need to be linked to an rlib, e.g. the injected allocator.
78 /// A dependency that is required by an rlib version of this crate.
79 /// Ordinary `extern crate`s result in `Explicit` dependencies.
84 pub fn macros_only(self) -> bool {
86 DepKind::UnexportedMacrosOnly | DepKind::MacrosOnly => true,
87 DepKind::Implicit | DepKind::Explicit => false,
92 #[derive(PartialEq, Clone, Debug)]
100 pub fn is_some(&self) -> bool {
101 if let LibSource::Some(_) = *self {
108 pub fn option(&self) -> Option<PathBuf> {
110 LibSource::Some(ref p) => Some(p.clone()),
111 LibSource::MetadataOnly | LibSource::None => None,
116 #[derive(Copy, Debug, PartialEq, Clone, RustcEncodable, RustcDecodable)]
117 pub enum LinkagePreference {
122 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, RustcEncodable, RustcDecodable)]
123 pub enum NativeLibraryKind {
124 NativeStatic, // native static library (.a archive)
125 NativeFramework, // OSX-specific
126 NativeUnknown, // default way to specify a dynamic library
129 #[derive(Clone, Hash, RustcEncodable, RustcDecodable)]
130 pub struct NativeLibrary {
131 pub kind: NativeLibraryKind,
133 pub cfg: Option<ast::MetaItem>,
134 pub foreign_items: Vec<DefIndex>,
137 pub enum LoadedMacro {
138 MacroRules(ast::MacroDef),
139 ProcMacro(Rc<SyntaxExtension>),
142 #[derive(Copy, Clone, Debug)]
143 pub struct ExternCrate {
144 /// def_id of an `extern crate` in the current crate that caused
145 /// this crate to be loaded; note that there could be multiple
149 /// span of the extern crate that caused this to be loaded
152 /// If true, then this crate is the crate named by the extern
153 /// crate referenced above. If false, then this crate is a dep
157 /// Number of links to reach the extern crate `def_id`
158 /// declaration; used to select the extern crate with the shortest
163 /// A store of Rust crates, through with their metadata
165 pub trait CrateStore<'tcx> {
167 fn describe_def(&self, def: DefId) -> Option<Def>;
168 fn def_span(&self, sess: &Session, def: DefId) -> Span;
169 fn stability(&self, def: DefId) -> Option<attr::Stability>;
170 fn deprecation(&self, def: DefId) -> Option<attr::Deprecation>;
171 fn visibility(&self, def: DefId) -> ty::Visibility;
172 fn closure_kind(&self, def_id: DefId) -> ty::ClosureKind;
173 fn closure_ty<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId)
174 -> ty::ClosureTy<'tcx>;
175 fn item_variances(&self, def: DefId) -> Vec<ty::Variance>;
176 fn item_type<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
178 fn visible_parent_map<'a>(&'a self) -> ::std::cell::RefMut<'a, DefIdMap<DefId>>;
179 fn item_predicates<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
180 -> ty::GenericPredicates<'tcx>;
181 fn item_super_predicates<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
182 -> ty::GenericPredicates<'tcx>;
183 fn item_generics<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
184 -> ty::Generics<'tcx>;
185 fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute>;
186 fn trait_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)-> ty::TraitDef;
187 fn adt_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> &'tcx ty::AdtDef;
188 fn fn_arg_names(&self, did: DefId) -> Vec<ast::Name>;
189 fn inherent_implementations_for_type(&self, def_id: DefId) -> Vec<DefId>;
192 fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId>;
195 fn associated_item_def_ids(&self, def_id: DefId) -> Vec<DefId>;
196 fn impl_trait_ref<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
197 -> Option<ty::TraitRef<'tcx>>;
198 fn impl_polarity(&self, def: DefId) -> hir::ImplPolarity;
199 fn custom_coerce_unsized_kind(&self, def: DefId)
200 -> Option<ty::adjustment::CustomCoerceUnsized>;
201 fn impl_parent(&self, impl_def_id: DefId) -> Option<DefId>;
203 // trait/impl-item info
204 fn trait_of_item(&self, def_id: DefId) -> Option<DefId>;
205 fn associated_item(&self, def: DefId) -> Option<ty::AssociatedItem>;
208 fn is_const_fn(&self, did: DefId) -> bool;
209 fn is_defaulted_trait(&self, did: DefId) -> bool;
210 fn is_default_impl(&self, impl_did: DefId) -> bool;
211 fn is_foreign_item(&self, did: DefId) -> bool;
212 fn is_dllimport_foreign_item(&self, def: DefId) -> bool;
213 fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool;
216 fn dylib_dependency_formats(&self, cnum: CrateNum)
217 -> Vec<(CrateNum, LinkagePreference)>;
218 fn dep_kind(&self, cnum: CrateNum) -> DepKind;
219 fn export_macros(&self, cnum: CrateNum);
220 fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>;
221 fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>;
222 fn is_staged_api(&self, cnum: CrateNum) -> bool;
223 fn is_allocator(&self, cnum: CrateNum) -> bool;
224 fn is_panic_runtime(&self, cnum: CrateNum) -> bool;
225 fn is_compiler_builtins(&self, cnum: CrateNum) -> bool;
226 fn panic_strategy(&self, cnum: CrateNum) -> PanicStrategy;
227 fn extern_crate(&self, cnum: CrateNum) -> Option<ExternCrate>;
228 /// The name of the crate as it is referred to in source code of the current
230 fn crate_name(&self, cnum: CrateNum) -> Symbol;
231 /// The name of the crate as it is stored in the crate's metadata.
232 fn original_crate_name(&self, cnum: CrateNum) -> Symbol;
233 fn crate_hash(&self, cnum: CrateNum) -> Svh;
234 fn crate_disambiguator(&self, cnum: CrateNum) -> Symbol;
235 fn plugin_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>;
236 fn derive_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>;
237 fn native_libraries(&self, cnum: CrateNum) -> Vec<NativeLibrary>;
238 fn exported_symbols(&self, cnum: CrateNum) -> Vec<DefId>;
239 fn is_no_builtins(&self, cnum: CrateNum) -> bool;
242 fn retrace_path(&self,
244 path_data: &[DisambiguatedDefPathData])
246 fn def_key(&self, def: DefId) -> DefKey;
247 fn def_path(&self, def: DefId) -> hir_map::DefPath;
248 fn struct_field_names(&self, def: DefId) -> Vec<ast::Name>;
249 fn item_children(&self, did: DefId) -> Vec<def::Export>;
250 fn load_macro(&self, did: DefId, sess: &Session) -> LoadedMacro;
253 fn maybe_get_item_body<'a>(&'tcx self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
254 -> Option<&'tcx hir::Body>;
255 fn item_body_nested_bodies(&self, def: DefId) -> BTreeMap<hir::BodyId, hir::Body>;
256 fn const_is_rvalue_promotable_to_static(&self, def: DefId) -> bool;
258 fn get_item_mir<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> Mir<'tcx>;
259 fn is_item_mir_available(&self, def: DefId) -> bool;
261 /// Take a look if we need to inline or monomorphize this. If so, we
262 /// will emit code for this item in the local crate, and thus
263 /// create a translation item for it.
264 fn can_have_local_instance<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> bool;
266 // This is basically a 1-based range of ints, which is a little
267 // silly - I may fix that.
268 fn crates(&self) -> Vec<CrateNum>;
269 fn used_libraries(&self) -> Vec<NativeLibrary>;
270 fn used_link_args(&self) -> Vec<String>;
273 fn metadata_filename(&self) -> &str;
274 fn metadata_section_name(&self, target: &Target) -> &str;
275 fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>;
276 fn used_crate_source(&self, cnum: CrateNum) -> CrateSource;
277 fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum>;
278 fn encode_metadata<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>,
279 reexports: &def::ExportMap,
280 link_meta: &LinkMeta,
281 reachable: &NodeSet) -> Vec<u8>;
282 fn metadata_encoding_version(&self) -> &[u8];
285 // FIXME: find a better place for this?
286 pub fn validate_crate_name(sess: Option<&Session>, s: &str, sp: Option<Span>) {
287 let mut err_count = 0;
289 let mut say = |s: &str| {
291 (_, None) => bug!("{}", s),
292 (Some(sp), Some(sess)) => sess.span_err(sp, s),
293 (None, Some(sess)) => sess.err(s),
298 say("crate name must not be empty");
301 if c.is_alphanumeric() { continue }
302 if c == '_' { continue }
303 say(&format!("invalid character `{}` in crate name: `{}`", c, s));
308 sess.unwrap().abort_if_errors();
312 /// A dummy crate store that does not support any non-local crates,
313 /// for test purposes.
314 pub struct DummyCrateStore;
315 #[allow(unused_variables)]
316 impl<'tcx> CrateStore<'tcx> for DummyCrateStore {
318 fn describe_def(&self, def: DefId) -> Option<Def> { bug!("describe_def") }
319 fn def_span(&self, sess: &Session, def: DefId) -> Span { bug!("def_span") }
320 fn stability(&self, def: DefId) -> Option<attr::Stability> { bug!("stability") }
321 fn deprecation(&self, def: DefId) -> Option<attr::Deprecation> { bug!("deprecation") }
322 fn visibility(&self, def: DefId) -> ty::Visibility { bug!("visibility") }
323 fn closure_kind(&self, def_id: DefId) -> ty::ClosureKind { bug!("closure_kind") }
324 fn closure_ty<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId)
325 -> ty::ClosureTy<'tcx> { bug!("closure_ty") }
326 fn item_variances(&self, def: DefId) -> Vec<ty::Variance> { bug!("item_variances") }
327 fn item_type<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
328 -> Ty<'tcx> { bug!("item_type") }
329 fn visible_parent_map<'a>(&'a self) -> ::std::cell::RefMut<'a, DefIdMap<DefId>> {
330 bug!("visible_parent_map")
332 fn item_predicates<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
333 -> ty::GenericPredicates<'tcx> { bug!("item_predicates") }
334 fn item_super_predicates<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
335 -> ty::GenericPredicates<'tcx> { bug!("item_super_predicates") }
336 fn item_generics<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
337 -> ty::Generics<'tcx> { bug!("item_generics") }
338 fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute> { bug!("item_attrs") }
339 fn trait_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)-> ty::TraitDef
340 { bug!("trait_def") }
341 fn adt_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> &'tcx ty::AdtDef
343 fn fn_arg_names(&self, did: DefId) -> Vec<ast::Name> { bug!("fn_arg_names") }
344 fn inherent_implementations_for_type(&self, def_id: DefId) -> Vec<DefId> { vec![] }
347 fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId> { vec![] }
350 fn associated_item_def_ids(&self, def_id: DefId) -> Vec<DefId>
351 { bug!("associated_items") }
352 fn impl_trait_ref<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
353 -> Option<ty::TraitRef<'tcx>> { bug!("impl_trait_ref") }
354 fn impl_polarity(&self, def: DefId) -> hir::ImplPolarity { bug!("impl_polarity") }
355 fn custom_coerce_unsized_kind(&self, def: DefId)
356 -> Option<ty::adjustment::CustomCoerceUnsized>
357 { bug!("custom_coerce_unsized_kind") }
358 fn impl_parent(&self, def: DefId) -> Option<DefId> { bug!("impl_parent") }
360 // trait/impl-item info
361 fn trait_of_item(&self, def_id: DefId) -> Option<DefId> { bug!("trait_of_item") }
362 fn associated_item(&self, def: DefId) -> Option<ty::AssociatedItem> { bug!("associated_item") }
365 fn is_const_fn(&self, did: DefId) -> bool { bug!("is_const_fn") }
366 fn is_defaulted_trait(&self, did: DefId) -> bool { bug!("is_defaulted_trait") }
367 fn is_default_impl(&self, impl_did: DefId) -> bool { bug!("is_default_impl") }
368 fn is_foreign_item(&self, did: DefId) -> bool { bug!("is_foreign_item") }
369 fn is_dllimport_foreign_item(&self, id: DefId) -> bool { false }
370 fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool { false }
373 fn dylib_dependency_formats(&self, cnum: CrateNum)
374 -> Vec<(CrateNum, LinkagePreference)>
375 { bug!("dylib_dependency_formats") }
376 fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>
377 { bug!("lang_items") }
378 fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>
379 { bug!("missing_lang_items") }
380 fn is_staged_api(&self, cnum: CrateNum) -> bool { bug!("is_staged_api") }
381 fn dep_kind(&self, cnum: CrateNum) -> DepKind { bug!("is_explicitly_linked") }
382 fn export_macros(&self, cnum: CrateNum) { bug!("export_macros") }
383 fn is_allocator(&self, cnum: CrateNum) -> bool { bug!("is_allocator") }
384 fn is_panic_runtime(&self, cnum: CrateNum) -> bool { bug!("is_panic_runtime") }
385 fn is_compiler_builtins(&self, cnum: CrateNum) -> bool { bug!("is_compiler_builtins") }
386 fn panic_strategy(&self, cnum: CrateNum) -> PanicStrategy {
387 bug!("panic_strategy")
389 fn extern_crate(&self, cnum: CrateNum) -> Option<ExternCrate> { bug!("extern_crate") }
390 fn crate_name(&self, cnum: CrateNum) -> Symbol { bug!("crate_name") }
391 fn original_crate_name(&self, cnum: CrateNum) -> Symbol {
392 bug!("original_crate_name")
394 fn crate_hash(&self, cnum: CrateNum) -> Svh { bug!("crate_hash") }
395 fn crate_disambiguator(&self, cnum: CrateNum)
396 -> Symbol { bug!("crate_disambiguator") }
397 fn plugin_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
398 { bug!("plugin_registrar_fn") }
399 fn derive_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
400 { bug!("derive_registrar_fn") }
401 fn native_libraries(&self, cnum: CrateNum) -> Vec<NativeLibrary>
402 { bug!("native_libraries") }
403 fn exported_symbols(&self, cnum: CrateNum) -> Vec<DefId> { bug!("exported_symbols") }
404 fn is_no_builtins(&self, cnum: CrateNum) -> bool { bug!("is_no_builtins") }
407 fn retrace_path(&self,
409 path_data: &[DisambiguatedDefPathData])
414 fn def_key(&self, def: DefId) -> DefKey { bug!("def_key") }
415 fn def_path(&self, def: DefId) -> hir_map::DefPath {
416 bug!("relative_def_path")
418 fn struct_field_names(&self, def: DefId) -> Vec<ast::Name> { bug!("struct_field_names") }
419 fn item_children(&self, did: DefId) -> Vec<def::Export> { bug!("item_children") }
420 fn load_macro(&self, did: DefId, sess: &Session) -> LoadedMacro { bug!("load_macro") }
423 fn maybe_get_item_body<'a>(&'tcx self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
424 -> Option<&'tcx hir::Body> {
425 bug!("maybe_get_item_body")
427 fn item_body_nested_bodies(&self, def: DefId) -> BTreeMap<hir::BodyId, hir::Body> {
428 bug!("item_body_nested_bodies")
430 fn const_is_rvalue_promotable_to_static(&self, def: DefId) -> bool {
431 bug!("const_is_rvalue_promotable_to_static")
434 fn get_item_mir<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
435 -> Mir<'tcx> { bug!("get_item_mir") }
436 fn is_item_mir_available(&self, def: DefId) -> bool {
437 bug!("is_item_mir_available")
439 fn can_have_local_instance<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> bool {
440 bug!("can_have_local_instance")
443 // This is basically a 1-based range of ints, which is a little
444 // silly - I may fix that.
445 fn crates(&self) -> Vec<CrateNum> { vec![] }
446 fn used_libraries(&self) -> Vec<NativeLibrary> { vec![] }
447 fn used_link_args(&self) -> Vec<String> { vec![] }
450 fn metadata_filename(&self) -> &str { bug!("metadata_filename") }
451 fn metadata_section_name(&self, target: &Target) -> &str { bug!("metadata_section_name") }
452 fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>
454 fn used_crate_source(&self, cnum: CrateNum) -> CrateSource { bug!("used_crate_source") }
455 fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum> { None }
456 fn encode_metadata<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>,
457 reexports: &def::ExportMap,
458 link_meta: &LinkMeta,
459 reachable: &NodeSet) -> Vec<u8> { vec![] }
460 fn metadata_encoding_version(&self) -> &[u8] { bug!("metadata_encoding_version") }
463 pub trait CrateLoader {
464 fn process_item(&mut self, item: &ast::Item, defs: &Definitions);
465 fn postprocess(&mut self, krate: &ast::Crate);