use rustc::hir::map::{DefKey, DefPath, DefPathData, DefPathHash,
DisambiguatedDefPathData};
use rustc::hir;
-use rustc::middle::cstore::{LinkagePreference, ExternConstBody,
- ExternBodyNestedBodies};
+use rustc::middle::cstore::LinkagePreference;
use rustc::middle::exported_symbols::{ExportedSymbol, SymbolExportLevel};
use rustc::hir::def::{self, Def, CtorKind};
use rustc::hir::def_id::{CrateNum, DefId, DefIndex,
use rustc::util::captures::Captures;
use rustc::util::nodemap::FxHashMap;
-use std::collections::BTreeMap;
use std::io;
use std::mem;
use std::u32;
use syntax::attr;
use syntax::ast::{self, Ident};
use syntax::codemap;
-use syntax::symbol::{InternedString, Symbol};
+use syntax::symbol::InternedString;
use syntax::ext::base::MacroKind;
use syntax_pos::{self, Span, BytePos, Pos, DUMMY_SP, NO_EXPANSION};
// interpreter allocation cache
interpret_alloc_cache: FxHashMap<usize, interpret::AllocId>,
- // a cache for sizes of interpreter allocations
- // needed to skip already deserialized allocations
- interpret_alloc_size: FxHashMap<usize, usize>,
+
+ // Read from the LazySeq CrateRoot::inpterpret_alloc_index on demand
+ interpret_alloc_index: Option<Vec<u32>>,
}
/// Abstract over the various ways one can create metadata decoders.
last_filemap_index: 0,
lazy_state: LazyState::NoNode,
interpret_alloc_cache: FxHashMap::default(),
- interpret_alloc_size: FxHashMap::default(),
+ interpret_alloc_index: None,
}
}
}
self.lazy_state = LazyState::Previous(position + min_size);
Ok(position)
}
+
+ fn interpret_alloc(&mut self, idx: usize) -> usize {
+ if let Some(index) = self.interpret_alloc_index.as_mut() {
+ return index[idx] as usize;
+ }
+ let cdata = self.cdata();
+ let index: Vec<u32> = cdata.root.interpret_alloc_index.decode(cdata).collect();
+ let pos = index[idx];
+ self.interpret_alloc_index = Some(index);
+ pos as usize
+ }
}
impl<'a, 'tcx: 'a> TyDecoder<'a, 'tcx> for DecodeContext<'a, 'tcx> {
impl<'a, 'tcx> SpecializedDecoder<interpret::AllocId> for DecodeContext<'a, 'tcx> {
fn specialized_decode(&mut self) -> Result<interpret::AllocId, Self::Error> {
- let tcx = self.tcx.expect("need tcx for AllocId decoding");
- let pos = self.position();
- if let Some(cached) = self.interpret_alloc_cache.get(&pos).cloned() {
- // if there's no end position we are currently deserializing a recursive
- // allocation
- if let Some(end) = self.interpret_alloc_size.get(&pos).cloned() {
- trace!("{} already cached as {:?}", pos, cached);
- // skip ahead
- self.opaque.set_position(end);
- return Ok(cached)
- }
+ let tcx = self.tcx.unwrap();
+ let idx = usize::decode(self)?;
+
+ if let Some(cached) = self.interpret_alloc_cache.get(&idx).cloned() {
+ return Ok(cached);
}
- let id = interpret::specialized_decode_alloc_id(
- self,
- tcx,
- pos,
- |this, pos, alloc_id| { this.interpret_alloc_cache.insert(pos, alloc_id); },
- |this, shorthand| {
- // need to load allocation
- this.with_position(shorthand, |this| interpret::AllocId::decode(this))
- }
- )?;
- let end_pos = self.position();
- assert!(self
- .interpret_alloc_size
- .insert(pos, end_pos)
- .is_none());
- Ok(id)
+ let pos = self.interpret_alloc(idx);
+ self.with_position(pos, |this| {
+ interpret::specialized_decode_alloc_id(
+ this,
+ tcx,
+ |this, alloc_id| {
+ assert!(this.interpret_alloc_cache.insert(idx, alloc_id).is_none());
+ },
+ )
+ })
}
}
impl<'tcx> EntryKind<'tcx> {
fn to_def(&self, did: DefId) -> Option<Def> {
Some(match *self {
- EntryKind::Const(_) => Def::Const(did),
+ EntryKind::Const(..) => Def::Const(did),
EntryKind::AssociatedConst(..) => Def::AssociatedConst(did),
EntryKind::ImmStatic |
EntryKind::ForeignImmStatic => Def::Static(did, false),
ty::VariantDef {
did: self.local_def_id(data.struct_ctor.unwrap_or(index)),
- name: Symbol::intern(&self.item_name(index)),
+ name: self.item_name(index).as_symbol(),
fields: item.children.decode(self).map(|index| {
let f = self.entry(index);
ty::FieldDef {
did: self.local_def_id(index),
- name: Symbol::intern(&self.item_name(index)),
+ name: self.item_name(index).as_symbol(),
vis: f.visibility.decode(self)
}
}).collect(),
if let Some(def) = self.get_def(child_index) {
callback(def::Export {
def,
- ident: Ident::from_str(&self.item_name(child_index)),
+ ident: Ident::from_interned_str(self.item_name(child_index)),
vis: self.get_visibility(child_index),
span: self.entry(child_index).span.decode((self, sess)),
is_import: false,
let span = child.span.decode((self, sess));
if let (Some(def), Some(name)) =
(self.get_def(child_index), def_key.disambiguated_data.data.get_opt_name()) {
- let ident = Ident::from_str(&name);
+ let ident = Ident::from_interned_str(name);
let vis = self.get_visibility(child_index);
let is_import = false;
callback(def::Export { def, ident, vis, span, is_import });
}
}
- pub fn extern_const_body(&self,
- tcx: TyCtxt<'a, 'tcx, 'tcx>,
- id: DefIndex)
- -> ExternConstBody<'tcx> {
- assert!(!self.is_proc_macro(id));
- let ast = self.entry(id).ast.unwrap();
- let def_id = self.local_def_id(id);
- let ast = ast.decode((self, tcx));
- let body = ast.body.decode((self, tcx));
- ExternConstBody {
- body: tcx.hir.intern_inlined_body(def_id, body),
- fingerprint: ast.stable_bodies_hash,
- }
- }
-
- pub fn item_body_tables(&self,
- id: DefIndex,
- tcx: TyCtxt<'a, 'tcx, 'tcx>)
- -> &'tcx ty::TypeckTables<'tcx> {
- let ast = self.entry(id).ast.unwrap().decode(self);
- tcx.alloc_tables(ast.tables.decode((self, tcx)))
- }
-
- pub fn item_body_nested_bodies(&self,
- tcx: TyCtxt<'a, 'tcx, 'tcx>,
- id: DefIndex)
- -> ExternBodyNestedBodies {
- if let Some(ref ast) = self.entry(id).ast {
- let mut ast = ast.decode(self);
- let nested_bodies: BTreeMap<_, _> = ast.nested_bodies
- .decode((self, tcx.sess))
- .map(|body| (body.id(), body))
- .collect();
- ExternBodyNestedBodies {
- nested_bodies: Lrc::new(nested_bodies),
- fingerprint: ast.stable_bodies_hash,
- }
- } else {
- ExternBodyNestedBodies {
- nested_bodies: Lrc::new(BTreeMap::new()),
- fingerprint: Fingerprint::ZERO,
- }
- }
- }
-
pub fn const_is_rvalue_promotable_to_static(&self, id: DefIndex) -> bool {
- self.entry(id).ast.expect("const item missing `ast`")
- .decode(self).rvalue_promotable_to_static
+ match self.entry(id).kind {
+ EntryKind::AssociatedConst(_, data, _) |
+ EntryKind::Const(data, _) => data.ast_promotable,
+ _ => bug!(),
+ }
}
pub fn is_item_mir_available(&self, id: DefIndex) -> bool {
pub fn mir_const_qualif(&self, id: DefIndex) -> u8 {
match self.entry(id).kind {
- EntryKind::Const(qualif) |
- EntryKind::AssociatedConst(AssociatedContainer::ImplDefault, qualif) |
- EntryKind::AssociatedConst(AssociatedContainer::ImplFinal, qualif) => {
- qualif
+ EntryKind::Const(qualif, _) |
+ EntryKind::AssociatedConst(AssociatedContainer::ImplDefault, qualif, _) |
+ EntryKind::AssociatedConst(AssociatedContainer::ImplFinal, qualif, _) => {
+ qualif.mir
}
_ => bug!(),
}
let name = def_key.disambiguated_data.data.get_opt_name().unwrap();
let (kind, container, has_self) = match item.kind {
- EntryKind::AssociatedConst(container, _) => {
+ EntryKind::AssociatedConst(container, _, _) => {
(ty::AssociatedKind::Const, container, false)
}
EntryKind::Method(data) => {
};
ty::AssociatedItem {
- name: Symbol::intern(&name),
+ name: name.as_symbol(),
kind,
vis: item.visibility.decode(self),
defaultness: container.defaultness(),
self.entry(id)
.children
.decode(self)
- .map(|index| Symbol::intern(&self.item_name(index)))
+ .map(|index| self.item_name(index).as_symbol())
.collect()
}
}
pub fn get_trait_of_item(&self, id: DefIndex) -> Option<DefId> {
- self.def_key(id).parent.and_then(|parent_index| {
+ let def_key = self.def_key(id);
+ match def_key.disambiguated_data.data {
+ DefPathData::TypeNs(..) | DefPathData::ValueNs(..) => (),
+ // Not an associated item
+ _ => return None,
+ }
+ def_key.parent.and_then(|parent_index| {
match self.entry(parent_index).kind {
EntryKind::Trait(_) => Some(self.local_def_id(parent_index)),
_ => None,
lazy_seq.decode((self, tcx)).collect()
}
+ pub fn get_rendered_const(&self, id: DefIndex) -> String {
+ match self.entry(id).kind {
+ EntryKind::Const(_, data) |
+ EntryKind::AssociatedConst(_, _, data) => data.decode(self).0,
+ _ => bug!(),
+ }
+ }
+
pub fn wasm_custom_sections(&self) -> Vec<DefId> {
let sections = self.root
.wasm_custom_sections
DefKey {
parent: Some(CRATE_DEF_INDEX),
disambiguated_data: DisambiguatedDefPathData {
- data: DefPathData::MacroDef(name.as_str()),
+ data: DefPathData::MacroDef(name.as_interned_str()),
disambiguator: 0,
}
}
projects / rust.git / blobdiff