643 lines
22 KiB
Rust
643 lines
22 KiB
Rust
// 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 encoder;
|
|
use locator;
|
|
use schema;
|
|
|
|
use rustc::middle::cstore::{InlinedItem, CrateStore, CrateSource, LibSource, DepKind, ExternCrate};
|
|
use rustc::middle::cstore::{NativeLibrary, LinkMeta, LinkagePreference, LoadedMacro};
|
|
use rustc::hir::def::{self, Def};
|
|
use rustc::middle::lang_items;
|
|
use rustc::session::Session;
|
|
use rustc::ty::{self, Ty, TyCtxt};
|
|
use rustc::hir::def_id::{CrateNum, DefId, DefIndex, CRATE_DEF_INDEX, LOCAL_CRATE};
|
|
|
|
use rustc::dep_graph::DepNode;
|
|
use rustc::hir::map::{DefKey, DefPath, DisambiguatedDefPathData};
|
|
use rustc::mir::Mir;
|
|
use rustc::util::nodemap::{NodeSet, DefIdMap};
|
|
use rustc_back::PanicStrategy;
|
|
|
|
use syntax::ast;
|
|
use syntax::attr;
|
|
use syntax::parse::new_parser_from_source_str;
|
|
use syntax::symbol::Symbol;
|
|
use syntax_pos::{mk_sp, Span};
|
|
use rustc::hir::svh::Svh;
|
|
use rustc_back::target::Target;
|
|
use rustc::hir;
|
|
|
|
impl<'tcx> CrateStore<'tcx> for cstore::CStore {
|
|
fn describe_def(&self, def: DefId) -> Option<Def> {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_def(def.index)
|
|
}
|
|
|
|
fn def_span(&self, sess: &Session, def: DefId) -> Span {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_span(def.index, sess)
|
|
}
|
|
|
|
fn stability(&self, def: DefId) -> Option<attr::Stability> {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_stability(def.index)
|
|
}
|
|
|
|
fn deprecation(&self, def: DefId) -> Option<attr::Deprecation> {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_deprecation(def.index)
|
|
}
|
|
|
|
fn visibility(&self, def: DefId) -> ty::Visibility {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_visibility(def.index)
|
|
}
|
|
|
|
fn closure_kind(&self, def_id: DefId) -> ty::ClosureKind
|
|
{
|
|
assert!(!def_id.is_local());
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
self.get_crate_data(def_id.krate).closure_kind(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));
|
|
self.get_crate_data(def_id.krate).closure_ty(def_id.index, tcx)
|
|
}
|
|
|
|
fn item_variances(&self, def: DefId) -> Vec<ty::Variance> {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_item_variances(def.index)
|
|
}
|
|
|
|
fn item_type<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
|
|
-> Ty<'tcx>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_type(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));
|
|
self.get_crate_data(def.krate).get_predicates(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));
|
|
self.get_crate_data(def.krate).get_super_predicates(def.index, tcx)
|
|
}
|
|
|
|
fn item_generics<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId)
|
|
-> ty::Generics<'tcx>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_generics(def.index, tcx)
|
|
}
|
|
|
|
fn item_attrs(&self, def_id: DefId) -> Vec<ast::Attribute>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
self.get_crate_data(def_id.krate).get_item_attrs(def_id.index)
|
|
}
|
|
|
|
fn trait_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> ty::TraitDef
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_trait_def(def.index, tcx)
|
|
}
|
|
|
|
fn adt_def<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> &'tcx ty::AdtDef
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_adt_def(def.index, tcx)
|
|
}
|
|
|
|
fn fn_arg_names(&self, did: DefId) -> Vec<ast::Name>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(did));
|
|
self.get_crate_data(did.krate).get_fn_arg_names(did.index)
|
|
}
|
|
|
|
fn inherent_implementations_for_type(&self, def_id: DefId) -> Vec<DefId>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
self.get_crate_data(def_id.krate).get_inherent_implementations_for_type(def_id.index)
|
|
}
|
|
|
|
fn implementations_of_trait(&self, filter: Option<DefId>) -> Vec<DefId>
|
|
{
|
|
if let Some(def_id) = filter {
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
}
|
|
let mut result = vec![];
|
|
self.iter_crate_data(|_, cdata| {
|
|
cdata.get_implementations_for_trait(filter, &mut result)
|
|
});
|
|
result
|
|
}
|
|
|
|
fn associated_item_def_ids(&self, def_id: DefId) -> Vec<DefId> {
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
let mut result = vec![];
|
|
self.get_crate_data(def_id.krate)
|
|
.each_child_of_item(def_id.index, |child| result.push(child.def.def_id()));
|
|
result
|
|
}
|
|
|
|
fn impl_polarity(&self, def: DefId) -> hir::ImplPolarity
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_impl_polarity(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));
|
|
self.get_crate_data(def.krate).get_impl_trait(def.index, tcx)
|
|
}
|
|
|
|
fn custom_coerce_unsized_kind(&self, def: DefId)
|
|
-> Option<ty::adjustment::CustomCoerceUnsized>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_custom_coerce_unsized_kind(def.index)
|
|
}
|
|
|
|
fn impl_parent(&self, impl_def: DefId) -> Option<DefId> {
|
|
self.dep_graph.read(DepNode::MetaData(impl_def));
|
|
self.get_crate_data(impl_def.krate).get_parent_impl(impl_def.index)
|
|
}
|
|
|
|
fn trait_of_item(&self, def_id: DefId) -> Option<DefId> {
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
self.get_crate_data(def_id.krate).get_trait_of_item(def_id.index)
|
|
}
|
|
|
|
fn associated_item(&self, def: DefId) -> Option<ty::AssociatedItem>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_associated_item(def.index)
|
|
}
|
|
|
|
fn is_const_fn(&self, did: DefId) -> bool
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(did));
|
|
self.get_crate_data(did.krate).is_const_fn(did.index)
|
|
}
|
|
|
|
fn is_defaulted_trait(&self, trait_def_id: DefId) -> bool
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(trait_def_id));
|
|
self.get_crate_data(trait_def_id.krate).is_defaulted_trait(trait_def_id.index)
|
|
}
|
|
|
|
fn is_default_impl(&self, impl_did: DefId) -> bool {
|
|
self.dep_graph.read(DepNode::MetaData(impl_did));
|
|
self.get_crate_data(impl_did.krate).is_default_impl(impl_did.index)
|
|
}
|
|
|
|
fn is_foreign_item(&self, did: DefId) -> bool {
|
|
self.get_crate_data(did.krate).is_foreign_item(did.index)
|
|
}
|
|
|
|
fn is_statically_included_foreign_item(&self, def_id: DefId) -> bool
|
|
{
|
|
self.do_is_statically_included_foreign_item(def_id)
|
|
}
|
|
|
|
fn is_dllimport_foreign_item(&self, def_id: DefId) -> bool {
|
|
if def_id.krate == LOCAL_CRATE {
|
|
self.dllimport_foreign_items.borrow().contains(&def_id.index)
|
|
} else {
|
|
self.get_crate_data(def_id.krate).is_dllimport_foreign_item(def_id.index)
|
|
}
|
|
}
|
|
|
|
fn dylib_dependency_formats(&self, cnum: CrateNum)
|
|
-> Vec<(CrateNum, LinkagePreference)>
|
|
{
|
|
self.get_crate_data(cnum).get_dylib_dependency_formats()
|
|
}
|
|
|
|
fn dep_kind(&self, cnum: CrateNum) -> DepKind
|
|
{
|
|
self.get_crate_data(cnum).dep_kind.get()
|
|
}
|
|
|
|
fn export_macros(&self, cnum: CrateNum) {
|
|
if self.get_crate_data(cnum).dep_kind.get() == DepKind::UnexportedMacrosOnly {
|
|
self.get_crate_data(cnum).dep_kind.set(DepKind::MacrosOnly)
|
|
}
|
|
}
|
|
|
|
fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>
|
|
{
|
|
self.get_crate_data(cnum).get_lang_items()
|
|
}
|
|
|
|
fn missing_lang_items(&self, cnum: CrateNum)
|
|
-> Vec<lang_items::LangItem>
|
|
{
|
|
self.get_crate_data(cnum).get_missing_lang_items()
|
|
}
|
|
|
|
fn is_staged_api(&self, cnum: CrateNum) -> bool
|
|
{
|
|
self.get_crate_data(cnum).is_staged_api()
|
|
}
|
|
|
|
fn is_allocator(&self, cnum: CrateNum) -> bool
|
|
{
|
|
self.get_crate_data(cnum).is_allocator()
|
|
}
|
|
|
|
fn is_panic_runtime(&self, cnum: CrateNum) -> bool
|
|
{
|
|
self.get_crate_data(cnum).is_panic_runtime()
|
|
}
|
|
|
|
fn is_compiler_builtins(&self, cnum: CrateNum) -> bool {
|
|
self.get_crate_data(cnum).is_compiler_builtins()
|
|
}
|
|
|
|
fn panic_strategy(&self, cnum: CrateNum) -> PanicStrategy {
|
|
self.get_crate_data(cnum).panic_strategy()
|
|
}
|
|
|
|
fn crate_name(&self, cnum: CrateNum) -> Symbol
|
|
{
|
|
self.get_crate_data(cnum).name
|
|
}
|
|
|
|
fn original_crate_name(&self, cnum: CrateNum) -> Symbol
|
|
{
|
|
self.get_crate_data(cnum).name()
|
|
}
|
|
|
|
fn extern_crate(&self, cnum: CrateNum) -> Option<ExternCrate>
|
|
{
|
|
self.get_crate_data(cnum).extern_crate.get()
|
|
}
|
|
|
|
fn crate_hash(&self, cnum: CrateNum) -> Svh
|
|
{
|
|
self.get_crate_hash(cnum)
|
|
}
|
|
|
|
fn crate_disambiguator(&self, cnum: CrateNum) -> Symbol
|
|
{
|
|
self.get_crate_data(cnum).disambiguator()
|
|
}
|
|
|
|
fn plugin_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
|
|
{
|
|
self.get_crate_data(cnum).root.plugin_registrar_fn.map(|index| DefId {
|
|
krate: cnum,
|
|
index: index
|
|
})
|
|
}
|
|
|
|
fn derive_registrar_fn(&self, cnum: CrateNum) -> Option<DefId>
|
|
{
|
|
self.get_crate_data(cnum).root.macro_derive_registrar.map(|index| DefId {
|
|
krate: cnum,
|
|
index: index
|
|
})
|
|
}
|
|
|
|
fn native_libraries(&self, cnum: CrateNum) -> Vec<NativeLibrary>
|
|
{
|
|
self.get_crate_data(cnum).get_native_libraries()
|
|
}
|
|
|
|
fn exported_symbols(&self, cnum: CrateNum) -> Vec<DefId>
|
|
{
|
|
self.get_crate_data(cnum).get_exported_symbols()
|
|
}
|
|
|
|
fn is_no_builtins(&self, cnum: CrateNum) -> bool {
|
|
self.get_crate_data(cnum).is_no_builtins()
|
|
}
|
|
|
|
fn retrace_path(&self,
|
|
cnum: CrateNum,
|
|
path: &[DisambiguatedDefPathData])
|
|
-> Option<DefId> {
|
|
let cdata = self.get_crate_data(cnum);
|
|
cdata.def_path_table
|
|
.retrace_path(&path)
|
|
.map(|index| DefId { krate: cnum, index: index })
|
|
}
|
|
|
|
/// 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) -> DefKey {
|
|
// Note: loading the def-key (or def-path) for a def-id is not
|
|
// a *read* of its metadata. This is because the def-id is
|
|
// really just an interned shorthand for a def-path, which is the
|
|
// canonical name for an item.
|
|
//
|
|
// self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).def_key(def.index)
|
|
}
|
|
|
|
fn def_path(&self, def: DefId) -> DefPath {
|
|
// See `Note` above in `def_key()` for why this read is
|
|
// commented out:
|
|
//
|
|
// self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).def_path(def.index)
|
|
}
|
|
|
|
fn struct_field_names(&self, def: DefId) -> Vec<ast::Name>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).get_struct_field_names(def.index)
|
|
}
|
|
|
|
fn item_children(&self, def_id: DefId) -> Vec<def::Export>
|
|
{
|
|
self.dep_graph.read(DepNode::MetaData(def_id));
|
|
let mut result = vec![];
|
|
self.get_crate_data(def_id.krate)
|
|
.each_child_of_item(def_id.index, |child| result.push(child));
|
|
result
|
|
}
|
|
|
|
fn load_macro(&self, id: DefId, sess: &Session) -> LoadedMacro {
|
|
let data = self.get_crate_data(id.krate);
|
|
if let Some(ref proc_macros) = data.proc_macros {
|
|
return LoadedMacro::ProcMacro(proc_macros[id.index.as_usize() - 1].1.clone());
|
|
}
|
|
|
|
let (name, def) = data.get_macro(id.index);
|
|
let source_name = format!("<{} macros>", name);
|
|
|
|
// NB: Don't use parse_tts_from_source_str because it parses with quote_depth > 0.
|
|
let mut parser = new_parser_from_source_str(&sess.parse_sess, source_name, def.body);
|
|
|
|
let lo = parser.span.lo;
|
|
let body = match parser.parse_all_token_trees() {
|
|
Ok(body) => body,
|
|
Err(mut err) => {
|
|
err.emit();
|
|
sess.abort_if_errors();
|
|
unreachable!();
|
|
}
|
|
};
|
|
let local_span = mk_sp(lo, parser.prev_span.hi);
|
|
|
|
// Mark the attrs as used
|
|
let attrs = data.get_item_attrs(id.index);
|
|
for attr in &attrs {
|
|
attr::mark_used(attr);
|
|
}
|
|
|
|
let name = data.def_key(id.index).disambiguated_data.data
|
|
.get_opt_name().expect("no name in load_macro");
|
|
sess.imported_macro_spans.borrow_mut()
|
|
.insert(local_span, (name.to_string(), data.get_span(id.index, sess)));
|
|
|
|
LoadedMacro::MacroRules(ast::MacroDef {
|
|
ident: ast::Ident::with_empty_ctxt(name),
|
|
id: ast::DUMMY_NODE_ID,
|
|
span: local_span,
|
|
attrs: attrs,
|
|
body: body,
|
|
})
|
|
}
|
|
|
|
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 inlined = self.get_crate_data(def_id.krate).maybe_get_item_ast(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;
|
|
|
|
// 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 {
|
|
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 {
|
|
None => {
|
|
self.inlined_item_cache
|
|
.borrow_mut()
|
|
.insert(def_id, None);
|
|
}
|
|
Some(&InlinedItem { ref body, .. }) => {
|
|
let inlined_root_node_id = find_inlined_item_root(body.value.id);
|
|
cache_inlined_item(def_id, inlined_root_node_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 get_item_mir<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> Mir<'tcx> {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).maybe_get_item_mir(tcx, def.index).unwrap_or_else(|| {
|
|
bug!("get_item_mir: missing MIR for {}", tcx.item_path_str(def))
|
|
})
|
|
}
|
|
|
|
fn is_item_mir_available(&self, def: DefId) -> bool {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
self.get_crate_data(def.krate).is_item_mir_available(def.index)
|
|
}
|
|
|
|
fn can_have_local_instance<'a>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>, def: DefId) -> bool {
|
|
self.dep_graph.read(DepNode::MetaData(def));
|
|
def.is_local() || self.get_crate_data(def.krate).can_have_local_instance(tcx, def.index)
|
|
}
|
|
|
|
fn crates(&self) -> Vec<CrateNum>
|
|
{
|
|
let mut result = vec![];
|
|
self.iter_crate_data(|cnum, _| result.push(cnum));
|
|
result
|
|
}
|
|
|
|
fn used_libraries(&self) -> Vec<NativeLibrary>
|
|
{
|
|
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
|
|
{
|
|
locator::METADATA_FILENAME
|
|
}
|
|
|
|
fn metadata_section_name(&self, target: &Target) -> &str
|
|
{
|
|
locator::meta_section_name(target)
|
|
}
|
|
|
|
fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>
|
|
{
|
|
self.do_get_used_crates(prefer)
|
|
}
|
|
|
|
fn used_crate_source(&self, cnum: CrateNum) -> CrateSource
|
|
{
|
|
self.get_crate_data(cnum).source.clone()
|
|
}
|
|
|
|
fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<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) -> Vec<u8>
|
|
{
|
|
encoder::encode_metadata(tcx, self, reexports, link_meta, reachable)
|
|
}
|
|
|
|
fn metadata_encoding_version(&self) -> &[u8]
|
|
{
|
|
schema::METADATA_HEADER
|
|
}
|
|
|
|
/// 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 std::collections::vec_deque::VecDeque;
|
|
use std::collections::hash_map::Entry;
|
|
for cnum in (1 .. self.next_crate_num().as_usize()).map(CrateNum::new) {
|
|
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: def::Export, parent: DefId| {
|
|
let child = child.def.def_id();
|
|
|
|
if self.visibility(child) != ty::Visibility::Public {
|
|
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);
|
|
}
|
|
}
|
|
};
|
|
|
|
bfs_queue.push_back(DefId {
|
|
krate: cnum,
|
|
index: CRATE_DEF_INDEX
|
|
});
|
|
while let Some(def) = bfs_queue.pop_front() {
|
|
for child in self.item_children(def) {
|
|
add_child(bfs_queue, child, def);
|
|
}
|
|
}
|
|
}
|
|
|
|
visible_parent_map
|
|
}
|
|
}
|