| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| use cstore; |
| use common; |
| use decoder; |
| use encoder; |
| use loader; |
| |
| use middle::cstore::{InlinedItem, CrateStore, CrateSource, ChildItem, ExternCrate, DefLike}; |
| use middle::cstore::{NativeLibraryKind, LinkMeta, LinkagePreference}; |
| use rustc::hir::def; |
| use middle::lang_items; |
| use rustc::ty::{self, Ty, TyCtxt, VariantKind}; |
| use rustc::hir::def_id::{DefId, DefIndex, CRATE_DEF_INDEX}; |
| |
| use rustc::dep_graph::DepNode; |
| use rustc::hir::map as hir_map; |
| use rustc::hir::map::DefKey; |
| use rustc::mir::repr::Mir; |
| use rustc::mir::mir_map::MirMap; |
| use rustc::util::nodemap::{FnvHashMap, NodeSet, DefIdMap}; |
| use rustc::session::config::PanicStrategy; |
| |
| use std::cell::RefCell; |
| use std::rc::Rc; |
| use std::path::PathBuf; |
| use syntax::ast; |
| use syntax::attr; |
| use syntax::parse::token; |
| use rustc::hir::svh::Svh; |
| use rustc_back::target::Target; |
| use rustc::hir; |
| |
| impl<'tcx> CrateStore<'tcx> for cstore::CStore { |
| fn stability(&self, def: DefId) -> Option<attr::Stability> { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_stability(&cdata, def.index) |
| } |
| |
| fn deprecation(&self, def: DefId) -> Option<attr::Deprecation> { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_deprecation(&cdata, def.index) |
| } |
| |
| fn visibility(&self, def: DefId) -> ty::Visibility { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_visibility(&cdata, def.index) |
| } |
| |
| fn closure_kind(&self, def_id: DefId) -> ty::ClosureKind |
| { |
| assert!(!def_id.is_local()); |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let cdata = self.get_crate_data(def_id.krate); |
| decoder::closure_kind(&cdata, def_id.index) |
| } |
| |
| fn closure_ty<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> ty::ClosureTy<'tcx> { |
| assert!(!def_id.is_local()); |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let cdata = self.get_crate_data(def_id.krate); |
| decoder::closure_ty(&cdata, def_id.index, tcx) |
| } |
| |
| fn item_variances(&self, def: DefId) -> ty::ItemVariances { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_item_variances(&cdata, def.index) |
| } |
| |
| fn repr_attrs(&self, def: DefId) -> Vec<attr::ReprAttr> { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_repr_attrs(&cdata, def.index) |
| } |
| |
| fn item_type<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> ty::TypeScheme<'tcx> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_type(&cdata, def.index, tcx) |
| } |
| |
| fn item_predicates<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> ty::GenericPredicates<'tcx> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_predicates(&cdata, def.index, tcx) |
| } |
| |
| fn item_super_predicates<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> ty::GenericPredicates<'tcx> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_super_predicates(&cdata, def.index, tcx) |
| } |
| |
| fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute> |
| { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let cdata = self.get_crate_data(def_id.krate); |
| decoder::get_item_attrs(&cdata, def_id.index) |
| } |
| |
| fn trait_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> ty::TraitDef<'tcx> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_trait_def(&cdata, def.index, tcx) |
| } |
| |
| fn adt_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> ty::AdtDefMaster<'tcx> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_adt_def(&cdata, def.index, tcx) |
| } |
| |
| fn method_arg_names(&self, did: DefId) -> Vec<String> |
| { |
| self.dep_graph.read(DepNode::MetaData(did)); |
| let cdata = self.get_crate_data(did.krate); |
| decoder::get_method_arg_names(&cdata, did.index) |
| } |
| |
| fn item_name(&self, def: DefId) -> ast::Name { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_item_name(&cdata, def.index) |
| } |
| |
| fn opt_item_name(&self, def: DefId) -> Option<ast::Name> { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::maybe_get_item_name(&cdata, def.index) |
| } |
| |
| fn inherent_implementations_for_type(&self, def_id: DefId) -> Vec<DefId> |
| { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let mut result = vec![]; |
| let cdata = self.get_crate_data(def_id.krate); |
| decoder::each_inherent_implementation_for_type(&cdata, def_id.index, |
| |iid| result.push(iid)); |
| result |
| } |
| |
| fn implementations_of_trait(&self, def_id: DefId) -> Vec<DefId> |
| { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let mut result = vec![]; |
| self.iter_crate_data(|_, cdata| { |
| decoder::each_implementation_for_trait(cdata, def_id, &mut |iid| { |
| result.push(iid) |
| }) |
| }); |
| result |
| } |
| |
| fn provided_trait_methods<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> Vec<Rc<ty::Method<'tcx>>> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_provided_trait_methods(&cdata, def.index, tcx) |
| } |
| |
| fn trait_item_def_ids(&self, def: DefId) |
| -> Vec<ty::ImplOrTraitItemId> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_trait_item_def_ids(&cdata, def.index) |
| } |
| |
| fn impl_items(&self, impl_def_id: DefId) -> Vec<ty::ImplOrTraitItemId> |
| { |
| self.dep_graph.read(DepNode::MetaData(impl_def_id)); |
| let cdata = self.get_crate_data(impl_def_id.krate); |
| decoder::get_impl_items(&cdata, impl_def_id.index) |
| } |
| |
| fn impl_polarity(&self, def: DefId) -> Option<hir::ImplPolarity> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_impl_polarity(&cdata, def.index) |
| } |
| |
| fn impl_trait_ref<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> Option<ty::TraitRef<'tcx>> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_impl_trait(&cdata, def.index, tcx) |
| } |
| |
| fn custom_coerce_unsized_kind(&self, def: DefId) |
| -> Option<ty::adjustment::CustomCoerceUnsized> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_custom_coerce_unsized_kind(&cdata, def.index) |
| } |
| |
| // FIXME: killme |
| fn associated_consts<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> Vec<Rc<ty::AssociatedConst<'tcx>>> { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_associated_consts(&cdata, def.index, tcx) |
| } |
| |
| fn impl_parent(&self, impl_def: DefId) -> Option<DefId> { |
| self.dep_graph.read(DepNode::MetaData(impl_def)); |
| let cdata = self.get_crate_data(impl_def.krate); |
| decoder::get_parent_impl(&*cdata, impl_def.index) |
| } |
| |
| fn trait_of_item<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> Option<DefId> |
| { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let cdata = self.get_crate_data(def_id.krate); |
| decoder::get_trait_of_item(&cdata, def_id.index, tcx) |
| } |
| |
| fn impl_or_trait_item<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> Option<ty::ImplOrTraitItem<'tcx>> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_impl_or_trait_item(&cdata, def.index, tcx) |
| } |
| |
| fn is_const_fn(&self, did: DefId) -> bool |
| { |
| self.dep_graph.read(DepNode::MetaData(did)); |
| let cdata = self.get_crate_data(did.krate); |
| decoder::is_const_fn(&cdata, did.index) |
| } |
| |
| fn is_defaulted_trait(&self, trait_def_id: DefId) -> bool |
| { |
| self.dep_graph.read(DepNode::MetaData(trait_def_id)); |
| let cdata = self.get_crate_data(trait_def_id.krate); |
| decoder::is_defaulted_trait(&cdata, trait_def_id.index) |
| } |
| |
| fn is_impl(&self, did: DefId) -> bool |
| { |
| self.dep_graph.read(DepNode::MetaData(did)); |
| let cdata = self.get_crate_data(did.krate); |
| decoder::is_impl(&cdata, did.index) |
| } |
| |
| fn is_default_impl(&self, impl_did: DefId) -> bool { |
| self.dep_graph.read(DepNode::MetaData(impl_did)); |
| let cdata = self.get_crate_data(impl_did.krate); |
| decoder::is_default_impl(&cdata, impl_did.index) |
| } |
| |
| fn is_extern_item<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, did: DefId) -> bool { |
| self.dep_graph.read(DepNode::MetaData(did)); |
| let cdata = self.get_crate_data(did.krate); |
| decoder::is_extern_item(&cdata, did.index, tcx) |
| } |
| |
| fn is_foreign_item(&self, did: DefId) -> bool { |
| let cdata = self.get_crate_data(did.krate); |
| decoder::is_foreign_item(&cdata, did.index) |
| } |
| |
| fn is_static_method(&self, def: DefId) -> bool |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::is_static_method(&cdata, def.index) |
| } |
| |
| fn is_statically_included_foreign_item(&self, id: ast::NodeId) -> bool |
| { |
| self.do_is_statically_included_foreign_item(id) |
| } |
| |
| fn is_typedef(&self, did: DefId) -> bool { |
| self.dep_graph.read(DepNode::MetaData(did)); |
| let cdata = self.get_crate_data(did.krate); |
| decoder::is_typedef(&cdata, did.index) |
| } |
| |
| fn dylib_dependency_formats(&self, cnum: ast::CrateNum) |
| -> Vec<(ast::CrateNum, LinkagePreference)> |
| { |
| let cdata = self.get_crate_data(cnum); |
| decoder::get_dylib_dependency_formats(&cdata) |
| } |
| |
| fn lang_items(&self, cnum: ast::CrateNum) -> Vec<(DefIndex, usize)> |
| { |
| let mut result = vec![]; |
| let crate_data = self.get_crate_data(cnum); |
| decoder::each_lang_item(&crate_data, |did, lid| { |
| result.push((did, lid)); true |
| }); |
| result |
| } |
| |
| fn missing_lang_items(&self, cnum: ast::CrateNum) |
| -> Vec<lang_items::LangItem> |
| { |
| let cdata = self.get_crate_data(cnum); |
| decoder::get_missing_lang_items(&cdata) |
| } |
| |
| fn is_staged_api(&self, cnum: ast::CrateNum) -> bool |
| { |
| self.get_crate_data(cnum).staged_api |
| } |
| |
| fn is_explicitly_linked(&self, cnum: ast::CrateNum) -> bool |
| { |
| self.get_crate_data(cnum).explicitly_linked.get() |
| } |
| |
| fn is_allocator(&self, cnum: ast::CrateNum) -> bool |
| { |
| self.get_crate_data(cnum).is_allocator() |
| } |
| |
| fn is_panic_runtime(&self, cnum: ast::CrateNum) -> bool |
| { |
| self.get_crate_data(cnum).is_panic_runtime() |
| } |
| |
| fn panic_strategy(&self, cnum: ast::CrateNum) -> PanicStrategy { |
| self.get_crate_data(cnum).panic_strategy() |
| } |
| |
| fn crate_attrs(&self, cnum: ast::CrateNum) -> Vec<ast::Attribute> |
| { |
| decoder::get_crate_attributes(self.get_crate_data(cnum).data()) |
| } |
| |
| fn crate_name(&self, cnum: ast::CrateNum) -> token::InternedString |
| { |
| token::intern_and_get_ident(&self.get_crate_data(cnum).name[..]) |
| } |
| |
| fn original_crate_name(&self, cnum: ast::CrateNum) -> token::InternedString |
| { |
| token::intern_and_get_ident(&self.get_crate_data(cnum).name()) |
| } |
| |
| fn extern_crate(&self, cnum: ast::CrateNum) -> Option<ExternCrate> |
| { |
| self.get_crate_data(cnum).extern_crate.get() |
| } |
| |
| fn crate_hash(&self, cnum: ast::CrateNum) -> Svh |
| { |
| let cdata = self.get_crate_data(cnum); |
| decoder::get_crate_hash(cdata.data()) |
| } |
| |
| fn crate_disambiguator(&self, cnum: ast::CrateNum) -> token::InternedString |
| { |
| let cdata = self.get_crate_data(cnum); |
| token::intern_and_get_ident(decoder::get_crate_disambiguator(cdata.data())) |
| } |
| |
| fn crate_struct_field_attrs(&self, cnum: ast::CrateNum) |
| -> FnvHashMap<DefId, Vec<ast::Attribute>> |
| { |
| decoder::get_struct_field_attrs(&self.get_crate_data(cnum)) |
| } |
| |
| fn plugin_registrar_fn(&self, cnum: ast::CrateNum) -> Option<DefId> |
| { |
| let cdata = self.get_crate_data(cnum); |
| decoder::get_plugin_registrar_fn(cdata.data()).map(|index| DefId { |
| krate: cnum, |
| index: index |
| }) |
| } |
| |
| fn native_libraries(&self, cnum: ast::CrateNum) -> Vec<(NativeLibraryKind, String)> |
| { |
| let cdata = self.get_crate_data(cnum); |
| decoder::get_native_libraries(&cdata) |
| } |
| |
| fn reachable_ids(&self, cnum: ast::CrateNum) -> Vec<DefId> |
| { |
| let cdata = self.get_crate_data(cnum); |
| decoder::get_reachable_ids(&cdata) |
| } |
| |
| fn def_index_for_def_key(&self, |
| cnum: ast::CrateNum, |
| def: DefKey) |
| -> Option<DefIndex> { |
| let cdata = self.get_crate_data(cnum); |
| cdata.key_map.get(&def).cloned() |
| } |
| |
| /// Returns the `DefKey` for a given `DefId`. This indicates the |
| /// parent `DefId` as well as some idea of what kind of data the |
| /// `DefId` refers to. |
| fn def_key(&self, def: DefId) -> hir_map::DefKey { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::def_key(&cdata, def.index) |
| } |
| |
| fn relative_def_path(&self, def: DefId) -> hir_map::DefPath { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::def_path(&cdata, def.index) |
| } |
| |
| fn variant_kind(&self, def_id: DefId) -> Option<VariantKind> { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let cdata = self.get_crate_data(def_id.krate); |
| decoder::get_variant_kind(&cdata, def_id.index) |
| } |
| |
| fn struct_ctor_def_id(&self, struct_def_id: DefId) -> Option<DefId> |
| { |
| self.dep_graph.read(DepNode::MetaData(struct_def_id)); |
| let cdata = self.get_crate_data(struct_def_id.krate); |
| decoder::get_struct_ctor_def_id(&cdata, struct_def_id.index) |
| } |
| |
| fn tuple_struct_definition_if_ctor(&self, did: DefId) -> Option<DefId> |
| { |
| self.dep_graph.read(DepNode::MetaData(did)); |
| let cdata = self.get_crate_data(did.krate); |
| decoder::get_tuple_struct_definition_if_ctor(&cdata, did.index) |
| } |
| |
| fn struct_field_names(&self, def: DefId) -> Vec<ast::Name> |
| { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::get_struct_field_names(&cdata, def.index) |
| } |
| |
| fn item_children(&self, def_id: DefId) -> Vec<ChildItem> |
| { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| let mut result = vec![]; |
| let crate_data = self.get_crate_data(def_id.krate); |
| let get_crate_data = |cnum| self.get_crate_data(cnum); |
| decoder::each_child_of_item(&crate_data, def_id.index, get_crate_data, |def, name, vis| { |
| result.push(ChildItem { def: def, name: name, vis: vis }); |
| }); |
| result |
| } |
| |
| fn crate_top_level_items(&self, cnum: ast::CrateNum) -> Vec<ChildItem> |
| { |
| let mut result = vec![]; |
| let crate_data = self.get_crate_data(cnum); |
| let get_crate_data = |cnum| self.get_crate_data(cnum); |
| decoder::each_top_level_item_of_crate(&crate_data, get_crate_data, |def, name, vis| { |
| result.push(ChildItem { def: def, name: name, vis: vis }); |
| }); |
| result |
| } |
| |
| fn maybe_get_item_ast<'a>(&'tcx self, |
| tcx: TyCtxt<'a, 'tcx, 'tcx>, |
| def_id: DefId) |
| -> Option<(&'tcx InlinedItem, ast::NodeId)> |
| { |
| self.dep_graph.read(DepNode::MetaData(def_id)); |
| |
| match self.inlined_item_cache.borrow().get(&def_id) { |
| Some(&None) => { |
| return None; // Not inlinable |
| } |
| Some(&Some(ref cached_inlined_item)) => { |
| // Already inline |
| debug!("maybe_get_item_ast({}): already inline as node id {}", |
| tcx.item_path_str(def_id), cached_inlined_item.item_id); |
| return Some((tcx.map.expect_inlined_item(cached_inlined_item.inlined_root), |
| cached_inlined_item.item_id)); |
| } |
| None => { |
| // Not seen yet |
| } |
| } |
| |
| debug!("maybe_get_item_ast({}): inlining item", tcx.item_path_str(def_id)); |
| |
| let cdata = self.get_crate_data(def_id.krate); |
| let inlined = decoder::maybe_get_item_ast(&cdata, tcx, def_id.index); |
| |
| let cache_inlined_item = |original_def_id, inlined_item_id, inlined_root_node_id| { |
| let cache_entry = cstore::CachedInlinedItem { |
| inlined_root: inlined_root_node_id, |
| item_id: inlined_item_id, |
| }; |
| self.inlined_item_cache |
| .borrow_mut() |
| .insert(original_def_id, Some(cache_entry)); |
| self.defid_for_inlined_node |
| .borrow_mut() |
| .insert(inlined_item_id, original_def_id); |
| }; |
| |
| let find_inlined_item_root = |inlined_item_id| { |
| let mut node = inlined_item_id; |
| let mut path = Vec::with_capacity(10); |
| |
| // If we can't find the inline root after a thousand hops, we can |
| // be pretty sure there's something wrong with the HIR map. |
| for _ in 0 .. 1000 { |
| path.push(node); |
| let parent_node = tcx.map.get_parent_node(node); |
| if parent_node == node { |
| return node; |
| } |
| node = parent_node; |
| } |
| bug!("cycle in HIR map parent chain") |
| }; |
| |
| match inlined { |
| decoder::FoundAst::NotFound => { |
| self.inlined_item_cache |
| .borrow_mut() |
| .insert(def_id, None); |
| } |
| decoder::FoundAst::Found(&InlinedItem::Item(ref item)) => { |
| let inlined_root_node_id = find_inlined_item_root(item.id); |
| cache_inlined_item(def_id, item.id, inlined_root_node_id); |
| } |
| decoder::FoundAst::Found(&InlinedItem::Foreign(ref item)) => { |
| let inlined_root_node_id = find_inlined_item_root(item.id); |
| cache_inlined_item(def_id, item.id, inlined_root_node_id); |
| } |
| decoder::FoundAst::FoundParent(parent_did, item) => { |
| let inlined_root_node_id = find_inlined_item_root(item.id); |
| cache_inlined_item(parent_did, item.id, inlined_root_node_id); |
| |
| match item.node { |
| hir::ItemEnum(ref ast_def, _) => { |
| let ast_vs = &ast_def.variants; |
| let ty_vs = &tcx.lookup_adt_def(parent_did).variants; |
| assert_eq!(ast_vs.len(), ty_vs.len()); |
| for (ast_v, ty_v) in ast_vs.iter().zip(ty_vs.iter()) { |
| cache_inlined_item(ty_v.did, |
| ast_v.node.data.id(), |
| inlined_root_node_id); |
| } |
| } |
| hir::ItemStruct(ref struct_def, _) => { |
| if struct_def.is_struct() { |
| bug!("instantiate_inline: called on a non-tuple struct") |
| } else { |
| cache_inlined_item(def_id, |
| struct_def.id(), |
| inlined_root_node_id); |
| } |
| } |
| _ => bug!("instantiate_inline: item has a \ |
| non-enum, non-struct parent") |
| } |
| } |
| decoder::FoundAst::Found(&InlinedItem::TraitItem(_, ref trait_item)) => { |
| let inlined_root_node_id = find_inlined_item_root(trait_item.id); |
| cache_inlined_item(def_id, trait_item.id, inlined_root_node_id); |
| |
| // Associated consts already have to be evaluated in `typeck`, so |
| // the logic to do that already exists in `middle`. In order to |
| // reuse that code, it needs to be able to look up the traits for |
| // inlined items. |
| let ty_trait_item = tcx.impl_or_trait_item(def_id).clone(); |
| let trait_item_def_id = tcx.map.local_def_id(trait_item.id); |
| tcx.impl_or_trait_items.borrow_mut() |
| .insert(trait_item_def_id, ty_trait_item); |
| } |
| decoder::FoundAst::Found(&InlinedItem::ImplItem(_, ref impl_item)) => { |
| let inlined_root_node_id = find_inlined_item_root(impl_item.id); |
| cache_inlined_item(def_id, impl_item.id, inlined_root_node_id); |
| } |
| } |
| |
| // We can be sure to hit the cache now |
| return self.maybe_get_item_ast(tcx, def_id); |
| } |
| |
| fn local_node_for_inlined_defid(&'tcx self, def_id: DefId) -> Option<ast::NodeId> { |
| assert!(!def_id.is_local()); |
| match self.inlined_item_cache.borrow().get(&def_id) { |
| Some(&Some(ref cached_inlined_item)) => { |
| Some(cached_inlined_item.item_id) |
| } |
| Some(&None) => { |
| None |
| } |
| _ => { |
| bug!("Trying to lookup inlined NodeId for unexpected item"); |
| } |
| } |
| } |
| |
| fn defid_for_inlined_node(&'tcx self, node_id: ast::NodeId) -> Option<DefId> { |
| self.defid_for_inlined_node.borrow().get(&node_id).map(|x| *x) |
| } |
| |
| fn maybe_get_item_mir<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) |
| -> Option<Mir<'tcx>> { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::maybe_get_item_mir(&cdata, tcx, def.index) |
| } |
| |
| fn is_item_mir_available(&self, def: DefId) -> bool { |
| self.dep_graph.read(DepNode::MetaData(def)); |
| let cdata = self.get_crate_data(def.krate); |
| decoder::is_item_mir_available(&cdata, def.index) |
| } |
| |
| fn crates(&self) -> Vec<ast::CrateNum> |
| { |
| let mut result = vec![]; |
| self.iter_crate_data(|cnum, _| result.push(cnum)); |
| result |
| } |
| |
| fn used_libraries(&self) -> Vec<(String, NativeLibraryKind)> |
| { |
| self.get_used_libraries().borrow().clone() |
| } |
| |
| fn used_link_args(&self) -> Vec<String> |
| { |
| self.get_used_link_args().borrow().clone() |
| } |
| |
| fn metadata_filename(&self) -> &str |
| { |
| loader::METADATA_FILENAME |
| } |
| |
| fn metadata_section_name(&self, target: &Target) -> &str |
| { |
| loader::meta_section_name(target) |
| } |
| fn encode_type<'a>(&self, |
| tcx: TyCtxt<'a, 'tcx, 'tcx>, |
| ty: Ty<'tcx>, |
| def_id_to_string: for<'b> fn(TyCtxt<'b, 'tcx, 'tcx>, DefId) -> String) |
| -> Vec<u8> |
| { |
| encoder::encoded_ty(tcx, ty, def_id_to_string) |
| } |
| |
| fn used_crates(&self, prefer: LinkagePreference) -> Vec<(ast::CrateNum, Option<PathBuf>)> |
| { |
| self.do_get_used_crates(prefer) |
| } |
| |
| fn used_crate_source(&self, cnum: ast::CrateNum) -> CrateSource |
| { |
| self.opt_used_crate_source(cnum).unwrap() |
| } |
| |
| fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<ast::CrateNum> |
| { |
| self.do_extern_mod_stmt_cnum(emod_id) |
| } |
| |
| fn encode_metadata<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, |
| reexports: &def::ExportMap, |
| link_meta: &LinkMeta, |
| reachable: &NodeSet, |
| mir_map: &MirMap<'tcx>, |
| krate: &hir::Crate) -> Vec<u8> |
| { |
| let ecx = encoder::EncodeContext { |
| diag: tcx.sess.diagnostic(), |
| tcx: tcx, |
| reexports: reexports, |
| link_meta: link_meta, |
| cstore: self, |
| reachable: reachable, |
| mir_map: mir_map, |
| type_abbrevs: RefCell::new(FnvHashMap()), |
| }; |
| encoder::encode_metadata(ecx, krate) |
| |
| } |
| |
| fn metadata_encoding_version(&self) -> &[u8] |
| { |
| common::metadata_encoding_version |
| } |
| |
| /// Returns a map from a sufficiently visible external item (i.e. an external item that is |
| /// visible from at least one local module) to a sufficiently visible parent (considering |
| /// modules that re-export the external item to be parents). |
| fn visible_parent_map<'a>(&'a self) -> ::std::cell::RefMut<'a, DefIdMap<DefId>> { |
| let mut visible_parent_map = self.visible_parent_map.borrow_mut(); |
| if !visible_parent_map.is_empty() { return visible_parent_map; } |
| |
| use rustc::middle::cstore::ChildItem; |
| use std::collections::vec_deque::VecDeque; |
| use std::collections::hash_map::Entry; |
| for cnum in 1 .. self.next_crate_num() { |
| let cdata = self.get_crate_data(cnum); |
| |
| match cdata.extern_crate.get() { |
| // Ignore crates without a corresponding local `extern crate` item. |
| Some(extern_crate) if !extern_crate.direct => continue, |
| _ => {}, |
| } |
| |
| let mut bfs_queue = &mut VecDeque::new(); |
| let mut add_child = |bfs_queue: &mut VecDeque<_>, child: ChildItem, parent: DefId| { |
| let child = match child.def { |
| DefLike::DlDef(def) if child.vis == ty::Visibility::Public => def.def_id(), |
| _ => return, |
| }; |
| |
| match visible_parent_map.entry(child) { |
| Entry::Occupied(mut entry) => { |
| // If `child` is defined in crate `cnum`, ensure |
| // that it is mapped to a parent in `cnum`. |
| if child.krate == cnum && entry.get().krate != cnum { |
| entry.insert(parent); |
| } |
| } |
| Entry::Vacant(entry) => { |
| entry.insert(parent); |
| bfs_queue.push_back(child); |
| } |
| } |
| }; |
| |
| let croot = DefId { krate: cnum, index: CRATE_DEF_INDEX }; |
| for child in self.crate_top_level_items(cnum) { |
| add_child(bfs_queue, child, croot); |
| } |
| while let Some(def) = bfs_queue.pop_front() { |
| for child in self.item_children(def) { |
| add_child(bfs_queue, child, def); |
| } |
| } |
| } |
| |
| visible_parent_map |
| } |
| } |
| |
