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.
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::path::PathBuf;
41 use syntax::ext::base::SyntaxExtension;
42 use syntax::symbol::Symbol;
44 use rustc_back::target::Target;
46 use rustc_back::PanicStrategy;
48 pub use self::NativeLibraryKind::*;
50 // lonely orphan structs and enums looking for a better home
52 #[derive(Clone, Debug)]
57 // Where a crate came from on the local filesystem. One of these three options
59 #[derive(PartialEq, Clone, Debug)]
60 pub struct CrateSource {
61 pub dylib: Option<(PathBuf, PathKind)>,
62 pub rlib: Option<(PathBuf, PathKind)>,
63 pub rmeta: Option<(PathBuf, PathKind)>,
66 #[derive(RustcEncodable, RustcDecodable, Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Debug)]
68 /// A dependency that is only used for its macros, none of which are visible from other crates.
69 /// These are included in the metadata only as placeholders and are ignored when decoding.
71 /// A dependency that is only used for its macros.
73 /// A dependency that is always injected into the dependency list and so
74 /// doesn't need to be linked to an rlib, e.g. the injected allocator.
76 /// A dependency that is required by an rlib version of this crate.
77 /// Ordinary `extern crate`s result in `Explicit` dependencies.
82 pub fn macros_only(self) -> bool {
84 DepKind::UnexportedMacrosOnly | DepKind::MacrosOnly => true,
85 DepKind::Implicit | DepKind::Explicit => false,
90 #[derive(PartialEq, Clone, Debug)]
98 pub fn is_some(&self) -> bool {
99 if let LibSource::Some(_) = *self {
106 pub fn option(&self) -> Option<PathBuf> {
108 LibSource::Some(ref p) => Some(p.clone()),
109 LibSource::MetadataOnly | LibSource::None => None,
114 #[derive(Copy, Debug, PartialEq, Clone, RustcEncodable, RustcDecodable)]
115 pub enum LinkagePreference {
120 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, RustcEncodable, RustcDecodable)]
121 pub enum NativeLibraryKind {
122 NativeStatic, // native static library (.a archive)
123 NativeStaticNobundle, // native static library, which doesn't get bundled into .rlibs
124 NativeFramework, // macOS-specific
125 NativeUnknown, // default way to specify a dynamic library
128 #[derive(Clone, Hash, RustcEncodable, RustcDecodable)]
129 pub struct NativeLibrary {
130 pub kind: NativeLibraryKind,
132 pub cfg: Option<ast::MetaItem>,
133 pub foreign_items: Vec<DefIndex>,
136 pub enum LoadedMacro {
138 ProcMacro(Rc<SyntaxExtension>),
141 #[derive(Copy, Clone, Debug)]
142 pub struct ExternCrate {
143 /// def_id of an `extern crate` in the current crate that caused
144 /// this crate to be loaded; note that there could be multiple
148 /// span of the extern crate that caused this to be loaded
151 /// If true, then this crate is the crate named by the extern
152 /// crate referenced above. If false, then this crate is a dep
156 /// Number of links to reach the extern crate `def_id`
157 /// declaration; used to select the extern crate with the shortest
162 pub struct EncodedMetadata {
163 pub raw_data: Vec<u8>,
164 pub hashes: Vec<EncodedMetadataHash>,
167 /// The hash for some metadata that (when saving) will be exported
168 /// from this crate, or which (when importing) was exported by an
170 #[derive(Debug, RustcEncodable, RustcDecodable, Copy, Clone)]
171 pub struct EncodedMetadataHash {
172 pub def_index: DefIndex,
173 pub hash: ich::Fingerprint,
176 /// A store of Rust crates, through with their metadata
178 pub trait CrateStore {
179 fn crate_data_as_rc_any(&self, krate: CrateNum) -> Rc<Any>;
182 fn visibility(&self, def: DefId) -> ty::Visibility;
183 fn visible_parent_map<'a>(&'a self) -> ::std::cell::Ref<'a, DefIdMap<DefId>>;
184 fn item_generics_cloned(&self, def: DefId) -> ty::Generics;
187 fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId>;
190 fn impl_defaultness(&self, def: DefId) -> hir::Defaultness;
191 fn impl_parent(&self, impl_def_id: DefId) -> Option<DefId>;
193 // trait/impl-item info
194 fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem;
197 fn is_const_fn(&self, did: DefId) -> bool;
198 fn is_default_impl(&self, impl_did: DefId) -> bool;
199 fn is_foreign_item(&self, did: DefId) -> bool;
200 fn is_dllimport_foreign_item(&self, def: DefId) -> bool;
201 fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool;
202 fn is_exported_symbol(&self, def_id: DefId) -> bool;
205 fn dylib_dependency_formats(&self, cnum: CrateNum)
206 -> Vec<(CrateNum, LinkagePreference)>;
207 fn dep_kind(&self, cnum: CrateNum) -> DepKind;
208 fn export_macros(&self, cnum: CrateNum);
209 fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>;
210 fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>;
211 fn is_staged_api(&self, cnum: CrateNum) -> bool;
212 fn is_allocator(&self, cnum: CrateNum) -> bool;
213 fn is_panic_runtime(&self, cnum: CrateNum) -> bool;
214 fn is_compiler_builtins(&self, cnum: CrateNum) -> bool;
215 fn is_sanitizer_runtime(&self, cnum: CrateNum) -> bool;
216 fn panic_strategy(&self, cnum: CrateNum) -> PanicStrategy;
217 fn extern_crate(&self, cnum: CrateNum) -> Option<ExternCrate>;
218 /// The name of the crate as it is referred to in source code of the current
220 fn crate_name(&self, cnum: CrateNum) -> Symbol;
221 /// The name of the crate as it is stored in the crate's metadata.
222 fn original_crate_name(&self, cnum: CrateNum) -> Symbol;
223 fn crate_hash(&self, cnum: CrateNum) -> Svh;
224 fn crate_disambiguator(&self, cnum: CrateNum) -> Symbol;
225 fn plugin_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>;
226 fn derive_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>;
227 fn native_libraries(&self, cnum: CrateNum) -> Vec<NativeLibrary>;
228 fn exported_symbols(&self, cnum: CrateNum) -> Vec<DefId>;
229 fn is_no_builtins(&self, cnum: CrateNum) -> bool;
232 fn retrace_path(&self,
234 path_data: &[DisambiguatedDefPathData])
236 fn def_key(&self, def: DefId) -> DefKey;
237 fn def_path(&self, def: DefId) -> hir_map::DefPath;
238 fn def_path_hash(&self, def: DefId) -> u64;
239 fn struct_field_names(&self, def: DefId) -> Vec<ast::Name>;
240 fn item_children(&self, did: DefId) -> Vec<def::Export>;
241 fn load_macro(&self, did: DefId, sess: &Session) -> LoadedMacro;
244 fn item_body<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
247 // This is basically a 1-based range of ints, which is a little
248 // silly - I may fix that.
249 fn crates(&self) -> Vec<CrateNum>;
250 fn used_libraries(&self) -> Vec<NativeLibrary>;
251 fn used_link_args(&self) -> Vec<String>;
254 fn metadata_filename(&self) -> &str;
255 fn metadata_section_name(&self, target: &Target) -> &str;
256 fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>;
257 fn used_crate_source(&self, cnum: CrateNum) -> CrateSource;
258 fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum>;
259 fn encode_metadata<'a, 'tcx>(&self,
260 tcx: TyCtxt<'a, 'tcx, 'tcx>,
261 link_meta: &LinkMeta,
264 fn metadata_encoding_version(&self) -> &[u8];
267 // FIXME: find a better place for this?
268 pub fn validate_crate_name(sess: Option<&Session>, s: &str, sp: Option<Span>) {
269 let mut err_count = 0;
271 let mut say = |s: &str| {
273 (_, None) => bug!("{}", s),
274 (Some(sp), Some(sess)) => sess.span_err(sp, s),
275 (None, Some(sess)) => sess.err(s),
280 say("crate name must not be empty");
283 if c.is_alphanumeric() { continue }
284 if c == '_' { continue }
285 say(&format!("invalid character `{}` in crate name: `{}`", c, s));
290 sess.unwrap().abort_if_errors();
294 /// A dummy crate store that does not support any non-local crates,
295 /// for test purposes.
296 pub struct DummyCrateStore;
298 #[allow(unused_variables)]
299 impl CrateStore for DummyCrateStore {
300 fn crate_data_as_rc_any(&self, krate: CrateNum) -> Rc<Any>
301 { bug!("crate_data_as_rc_any") }
303 fn visibility(&self, def: DefId) -> ty::Visibility { bug!("visibility") }
304 fn visible_parent_map<'a>(&'a self) -> ::std::cell::Ref<'a, DefIdMap<DefId>> {
305 bug!("visible_parent_map")
307 fn item_generics_cloned(&self, def: DefId) -> ty::Generics
308 { bug!("item_generics_cloned") }
311 fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId> { vec![] }
314 fn impl_defaultness(&self, def: DefId) -> hir::Defaultness { bug!("impl_defaultness") }
315 fn impl_parent(&self, def: DefId) -> Option<DefId> { bug!("impl_parent") }
317 // trait/impl-item info
318 fn associated_item_cloned(&self, def: DefId) -> ty::AssociatedItem
319 { bug!("associated_item_cloned") }
322 fn is_const_fn(&self, did: DefId) -> bool { bug!("is_const_fn") }
323 fn is_default_impl(&self, impl_did: DefId) -> bool { bug!("is_default_impl") }
324 fn is_foreign_item(&self, did: DefId) -> bool { bug!("is_foreign_item") }
325 fn is_dllimport_foreign_item(&self, id: DefId) -> bool { false }
326 fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool { false }
327 fn is_exported_symbol(&self, def_id: DefId) -> bool { false }
330 fn dylib_dependency_formats(&self, cnum: CrateNum)
331 -> Vec<(CrateNum, LinkagePreference)>
332 { bug!("dylib_dependency_formats") }
333 fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>
334 { bug!("lang_items") }
335 fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>
336 { bug!("missing_lang_items") }
337 fn is_staged_api(&self, cnum: CrateNum) -> bool { bug!("is_staged_api") }
338 fn dep_kind(&self, cnum: CrateNum) -> DepKind { bug!("is_explicitly_linked") }
339 fn export_macros(&self, cnum: CrateNum) { bug!("export_macros") }
340 fn is_allocator(&self, cnum: CrateNum) -> bool { bug!("is_allocator") }
341 fn is_panic_runtime(&self, cnum: CrateNum) -> bool { bug!("is_panic_runtime") }
342 fn is_compiler_builtins(&self, cnum: CrateNum) -> bool { bug!("is_compiler_builtins") }
343 fn is_sanitizer_runtime(&self, cnum: CrateNum) -> bool { bug!("is_sanitizer_runtime") }
344 fn panic_strategy(&self, cnum: CrateNum) -> PanicStrategy {
345 bug!("panic_strategy")
347 fn extern_crate(&self, cnum: CrateNum) -> Option<ExternCrate> { bug!("extern_crate") }
348 fn crate_name(&self, cnum: CrateNum) -> Symbol { bug!("crate_name") }
349 fn original_crate_name(&self, cnum: CrateNum) -> Symbol {
350 bug!("original_crate_name")
352 fn crate_hash(&self, cnum: CrateNum) -> Svh { bug!("crate_hash") }
353 fn crate_disambiguator(&self, cnum: CrateNum)
354 -> Symbol { bug!("crate_disambiguator") }
355 fn plugin_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
356 { bug!("plugin_registrar_fn") }
357 fn derive_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
358 { bug!("derive_registrar_fn") }
359 fn native_libraries(&self, cnum: CrateNum) -> Vec<NativeLibrary>
360 { bug!("native_libraries") }
361 fn exported_symbols(&self, cnum: CrateNum) -> Vec<DefId> { bug!("exported_symbols") }
362 fn is_no_builtins(&self, cnum: CrateNum) -> bool { bug!("is_no_builtins") }
365 fn retrace_path(&self,
367 path_data: &[DisambiguatedDefPathData])
372 fn def_key(&self, def: DefId) -> DefKey { bug!("def_key") }
373 fn def_path(&self, def: DefId) -> hir_map::DefPath {
374 bug!("relative_def_path")
376 fn def_path_hash(&self, def: DefId) -> u64 {
379 fn struct_field_names(&self, def: DefId) -> Vec<ast::Name> { bug!("struct_field_names") }
380 fn item_children(&self, did: DefId) -> Vec<def::Export> { bug!("item_children") }
381 fn load_macro(&self, did: DefId, sess: &Session) -> LoadedMacro { bug!("load_macro") }
384 fn item_body<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
389 // This is basically a 1-based range of ints, which is a little
390 // silly - I may fix that.
391 fn crates(&self) -> Vec<CrateNum> { vec![] }
392 fn used_libraries(&self) -> Vec<NativeLibrary> { vec![] }
393 fn used_link_args(&self) -> Vec<String> { vec![] }
396 fn metadata_filename(&self) -> &str { bug!("metadata_filename") }
397 fn metadata_section_name(&self, target: &Target) -> &str { bug!("metadata_section_name") }
398 fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>
400 fn used_crate_source(&self, cnum: CrateNum) -> CrateSource { bug!("used_crate_source") }
401 fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum> { None }
402 fn encode_metadata<'a, 'tcx>(&self,
403 tcx: TyCtxt<'a, 'tcx, 'tcx>,
404 link_meta: &LinkMeta,
407 bug!("encode_metadata")
409 fn metadata_encoding_version(&self) -> &[u8] { bug!("metadata_encoding_version") }
412 pub trait CrateLoader {
413 fn process_item(&mut self, item: &ast::Item, defs: &Definitions);
414 fn postprocess(&mut self, krate: &ast::Crate);