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};
31 use middle::lang_items;
32 use ty::{self, TyCtxt};
34 use session::search_paths::PathKind;
35 use util::nodemap::{NodeSet, DefIdMap};
38 use std::collections::BTreeMap;
39 use std::path::PathBuf;
43 use syntax::ext::base::SyntaxExtension;
44 use syntax::symbol::Symbol;
46 use rustc_back::target::Target;
48 use rustc_back::PanicStrategy;
50 pub use self::NativeLibraryKind::*;
52 // lonely orphan structs and enums looking for a better home
54 #[derive(Clone, Debug)]
56 pub crate_name: Symbol,
60 // Where a crate came from on the local filesystem. One of these three options
62 #[derive(PartialEq, Clone, Debug)]
63 pub struct CrateSource {
64 pub dylib: Option<(PathBuf, PathKind)>,
65 pub rlib: Option<(PathBuf, PathKind)>,
66 pub rmeta: Option<(PathBuf, PathKind)>,
69 #[derive(RustcEncodable, RustcDecodable, Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Debug)]
71 /// A dependency that is only used for its macros, none of which are visible from other crates.
72 /// These are included in the metadata only as placeholders and are ignored when decoding.
74 /// A dependency that is only used for its macros.
76 /// A dependency that is always injected into the dependency list and so
77 /// doesn't need to be linked to an rlib, e.g. the injected allocator.
79 /// A dependency that is required by an rlib version of this crate.
80 /// Ordinary `extern crate`s result in `Explicit` dependencies.
85 pub fn macros_only(self) -> bool {
87 DepKind::UnexportedMacrosOnly | DepKind::MacrosOnly => true,
88 DepKind::Implicit | DepKind::Explicit => false,
93 #[derive(PartialEq, Clone, Debug)]
101 pub fn is_some(&self) -> bool {
102 if let LibSource::Some(_) = *self {
109 pub fn option(&self) -> Option<PathBuf> {
111 LibSource::Some(ref p) => Some(p.clone()),
112 LibSource::MetadataOnly | LibSource::None => None,
117 #[derive(Copy, Debug, PartialEq, Clone, RustcEncodable, RustcDecodable)]
118 pub enum LinkagePreference {
123 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, RustcEncodable, RustcDecodable)]
124 pub enum NativeLibraryKind {
125 NativeStatic, // native static library (.a archive)
126 NativeStaticNobundle, // native static library, which doesn't get bundled into .rlibs
127 NativeFramework, // macOS-specific
128 NativeUnknown, // default way to specify a dynamic library
131 #[derive(Clone, Hash, RustcEncodable, RustcDecodable)]
132 pub struct NativeLibrary {
133 pub kind: NativeLibraryKind,
135 pub cfg: Option<ast::MetaItem>,
136 pub foreign_items: Vec<DefIndex>,
139 pub enum LoadedMacro {
141 ProcMacro(Rc<SyntaxExtension>),
144 #[derive(Copy, Clone, Debug)]
145 pub struct ExternCrate {
146 /// def_id of an `extern crate` in the current crate that caused
147 /// this crate to be loaded; note that there could be multiple
151 /// span of the extern crate that caused this to be loaded
154 /// If true, then this crate is the crate named by the extern
155 /// crate referenced above. If false, then this crate is a dep
159 /// Number of links to reach the extern crate `def_id`
160 /// declaration; used to select the extern crate with the shortest
165 pub struct EncodedMetadata {
166 pub raw_data: Vec<u8>,
167 pub hashes: Vec<EncodedMetadataHash>,
170 /// The hash for some metadata that (when saving) will be exported
171 /// from this crate, or which (when importing) was exported by an
173 #[derive(Debug, RustcEncodable, RustcDecodable, Copy, Clone)]
174 pub struct EncodedMetadataHash {
175 pub def_index: DefIndex,
176 pub hash: ich::Fingerprint,
179 /// A store of Rust crates, through with their metadata
181 pub trait CrateStore {
182 fn crate_data_as_rc_any(&self, krate: CrateNum) -> Rc<Any>;
185 fn describe_def(&self, def: DefId) -> Option<Def>;
186 fn def_span(&self, sess: &Session, def: DefId) -> Span;
187 fn stability(&self, def: DefId) -> Option<attr::Stability>;
188 fn deprecation(&self, def: DefId) -> Option<attr::Deprecation>;
189 fn visibility(&self, def: DefId) -> ty::Visibility;
190 fn visible_parent_map<'a>(&'a self) -> ::std::cell::Ref<'a, DefIdMap<DefId>>;
191 fn item_generics_cloned(&self, def: DefId) -> ty::Generics;
192 fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute>;
193 fn fn_arg_names(&self, did: DefId) -> Vec<ast::Name>;
196 fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId>;
199 fn impl_polarity(&self, def: DefId) -> hir::ImplPolarity;
200 fn impl_parent(&self, impl_def_id: DefId) -> Option<DefId>;
202 // trait/impl-item info
203 fn trait_of_item(&self, def_id: DefId) -> Option<DefId>;
204 fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem;
207 fn is_const_fn(&self, did: DefId) -> bool;
208 fn is_default_impl(&self, impl_did: DefId) -> bool;
209 fn is_foreign_item(&self, did: DefId) -> bool;
210 fn is_dllimport_foreign_item(&self, def: DefId) -> bool;
211 fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool;
212 fn is_exported_symbol(&self, def_id: DefId) -> bool;
215 fn dylib_dependency_formats(&self, cnum: CrateNum)
216 -> Vec<(CrateNum, LinkagePreference)>;
217 fn dep_kind(&self, cnum: CrateNum) -> DepKind;
218 fn export_macros(&self, cnum: CrateNum);
219 fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>;
220 fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>;
221 fn is_staged_api(&self, cnum: CrateNum) -> bool;
222 fn is_allocator(&self, cnum: CrateNum) -> bool;
223 fn is_panic_runtime(&self, cnum: CrateNum) -> bool;
224 fn is_compiler_builtins(&self, cnum: CrateNum) -> bool;
225 fn is_sanitizer_runtime(&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 def_path_hash(&self, def: DefId) -> u64;
249 fn struct_field_names(&self, def: DefId) -> Vec<ast::Name>;
250 fn item_children(&self, did: DefId) -> Vec<def::Export>;
251 fn load_macro(&self, did: DefId, sess: &Session) -> LoadedMacro;
254 fn maybe_get_item_body<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
255 -> Option<&'tcx hir::Body>;
256 fn item_body_nested_bodies(&self, def: DefId) -> BTreeMap<hir::BodyId, hir::Body>;
257 fn const_is_rvalue_promotable_to_static(&self, def: DefId) -> bool;
259 fn is_item_mir_available(&self, def: DefId) -> bool;
261 // This is basically a 1-based range of ints, which is a little
262 // silly - I may fix that.
263 fn crates(&self) -> Vec<CrateNum>;
264 fn used_libraries(&self) -> Vec<NativeLibrary>;
265 fn used_link_args(&self) -> Vec<String>;
268 fn metadata_filename(&self) -> &str;
269 fn metadata_section_name(&self, target: &Target) -> &str;
270 fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>;
271 fn used_crate_source(&self, cnum: CrateNum) -> CrateSource;
272 fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum>;
273 fn encode_metadata<'a, 'tcx>(&self,
274 tcx: TyCtxt<'a, 'tcx, 'tcx>,
275 link_meta: &LinkMeta,
278 fn metadata_encoding_version(&self) -> &[u8];
281 // FIXME: find a better place for this?
282 pub fn validate_crate_name(sess: Option<&Session>, s: &str, sp: Option<Span>) {
283 let mut err_count = 0;
285 let mut say = |s: &str| {
287 (_, None) => bug!("{}", s),
288 (Some(sp), Some(sess)) => sess.span_err(sp, s),
289 (None, Some(sess)) => sess.err(s),
294 say("crate name must not be empty");
297 if c.is_alphanumeric() { continue }
298 if c == '_' { continue }
299 say(&format!("invalid character `{}` in crate name: `{}`", c, s));
304 sess.unwrap().abort_if_errors();
308 /// A dummy crate store that does not support any non-local crates,
309 /// for test purposes.
310 pub struct DummyCrateStore;
312 #[allow(unused_variables)]
313 impl CrateStore for DummyCrateStore {
314 fn crate_data_as_rc_any(&self, krate: CrateNum) -> Rc<Any>
315 { bug!("crate_data_as_rc_any") }
317 fn describe_def(&self, def: DefId) -> Option<Def> { bug!("describe_def") }
318 fn def_span(&self, sess: &Session, def: DefId) -> Span { bug!("def_span") }
319 fn stability(&self, def: DefId) -> Option<attr::Stability> { bug!("stability") }
320 fn deprecation(&self, def: DefId) -> Option<attr::Deprecation> { bug!("deprecation") }
321 fn visibility(&self, def: DefId) -> ty::Visibility { bug!("visibility") }
322 fn visible_parent_map<'a>(&'a self) -> ::std::cell::Ref<'a, DefIdMap<DefId>> {
323 bug!("visible_parent_map")
325 fn item_generics_cloned(&self, def: DefId) -> ty::Generics
326 { bug!("item_generics_cloned") }
327 fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute> { bug!("item_attrs") }
328 fn fn_arg_names(&self, did: DefId) -> Vec<ast::Name> { bug!("fn_arg_names") }
331 fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId> { vec![] }
334 fn impl_polarity(&self, def: DefId) -> hir::ImplPolarity { bug!("impl_polarity") }
335 fn impl_parent(&self, def: DefId) -> Option<DefId> { bug!("impl_parent") }
337 // trait/impl-item info
338 fn trait_of_item(&self, def_id: DefId) -> Option<DefId> { bug!("trait_of_item") }
339 fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem
340 { bug!("associated_item_cloned") }
343 fn is_const_fn(&self, did: DefId) -> bool { bug!("is_const_fn") }
344 fn is_default_impl(&self, impl_did: DefId) -> bool { bug!("is_default_impl") }
345 fn is_foreign_item(&self, did: DefId) -> bool { bug!("is_foreign_item") }
346 fn is_dllimport_foreign_item(&self, id: DefId) -> bool { false }
347 fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool { false }
348 fn is_exported_symbol(&self, def_id: DefId) -> bool { false }
351 fn dylib_dependency_formats(&self, cnum: CrateNum)
352 -> Vec<(CrateNum, LinkagePreference)>
353 { bug!("dylib_dependency_formats") }
354 fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>
355 { bug!("lang_items") }
356 fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>
357 { bug!("missing_lang_items") }
358 fn is_staged_api(&self, cnum: CrateNum) -> bool { bug!("is_staged_api") }
359 fn dep_kind(&self, cnum: CrateNum) -> DepKind { bug!("is_explicitly_linked") }
360 fn export_macros(&self, cnum: CrateNum) { bug!("export_macros") }
361 fn is_allocator(&self, cnum: CrateNum) -> bool { bug!("is_allocator") }
362 fn is_panic_runtime(&self, cnum: CrateNum) -> bool { bug!("is_panic_runtime") }
363 fn is_compiler_builtins(&self, cnum: CrateNum) -> bool { bug!("is_compiler_builtins") }
364 fn is_sanitizer_runtime(&self, cnum: CrateNum) -> bool { bug!("is_sanitizer_runtime") }
365 fn panic_strategy(&self, cnum: CrateNum) -> PanicStrategy {
366 bug!("panic_strategy")
368 fn extern_crate(&self, cnum: CrateNum) -> Option<ExternCrate> { bug!("extern_crate") }
369 fn crate_name(&self, cnum: CrateNum) -> Symbol { bug!("crate_name") }
370 fn original_crate_name(&self, cnum: CrateNum) -> Symbol {
371 bug!("original_crate_name")
373 fn crate_hash(&self, cnum: CrateNum) -> Svh { bug!("crate_hash") }
374 fn crate_disambiguator(&self, cnum: CrateNum)
375 -> Symbol { bug!("crate_disambiguator") }
376 fn plugin_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
377 { bug!("plugin_registrar_fn") }
378 fn derive_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
379 { bug!("derive_registrar_fn") }
380 fn native_libraries(&self, cnum: CrateNum) -> Vec<NativeLibrary>
381 { bug!("native_libraries") }
382 fn exported_symbols(&self, cnum: CrateNum) -> Vec<DefId> { bug!("exported_symbols") }
383 fn is_no_builtins(&self, cnum: CrateNum) -> bool { bug!("is_no_builtins") }
386 fn retrace_path(&self,
388 path_data: &[DisambiguatedDefPathData])
393 fn def_key(&self, def: DefId) -> DefKey { bug!("def_key") }
394 fn def_path(&self, def: DefId) -> hir_map::DefPath {
395 bug!("relative_def_path")
397 fn def_path_hash(&self, def: DefId) -> u64 {
400 fn struct_field_names(&self, def: DefId) -> Vec<ast::Name> { bug!("struct_field_names") }
401 fn item_children(&self, did: DefId) -> Vec<def::Export> { bug!("item_children") }
402 fn load_macro(&self, did: DefId, sess: &Session) -> LoadedMacro { bug!("load_macro") }
405 fn maybe_get_item_body<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
406 -> Option<&'tcx hir::Body> {
407 bug!("maybe_get_item_body")
409 fn item_body_nested_bodies(&self, def: DefId) -> BTreeMap<hir::BodyId, hir::Body> {
410 bug!("item_body_nested_bodies")
412 fn const_is_rvalue_promotable_to_static(&self, def: DefId) -> bool {
413 bug!("const_is_rvalue_promotable_to_static")
416 fn is_item_mir_available(&self, def: DefId) -> bool {
417 bug!("is_item_mir_available")
420 // This is basically a 1-based range of ints, which is a little
421 // silly - I may fix that.
422 fn crates(&self) -> Vec<CrateNum> { vec![] }
423 fn used_libraries(&self) -> Vec<NativeLibrary> { vec![] }
424 fn used_link_args(&self) -> Vec<String> { vec![] }
427 fn metadata_filename(&self) -> &str { bug!("metadata_filename") }
428 fn metadata_section_name(&self, target: &Target) -> &str { bug!("metadata_section_name") }
429 fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>
431 fn used_crate_source(&self, cnum: CrateNum) -> CrateSource { bug!("used_crate_source") }
432 fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum> { None }
433 fn encode_metadata<'a, 'tcx>(&self,
434 tcx: TyCtxt<'a, 'tcx, 'tcx>,
435 link_meta: &LinkMeta,
438 bug!("encode_metadata")
440 fn metadata_encoding_version(&self) -> &[u8] { bug!("metadata_encoding_version") }
443 pub trait CrateLoader {
444 fn process_item(&mut self, item: &ast::Item, defs: &Definitions);
445 fn postprocess(&mut self, krate: &ast::Crate);