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use schema;
use rustc::hir::def_id::{CrateNum, DefIndex};
use rustc::hir::map::definitions::DefPathTable;
use rustc::middle::cstore::{DepKind, ExternCrate, MetadataLoader};
use rustc::mir::interpret::AllocDecodingState;
use rustc_data_structures::indexed_vec::IndexVec;
use rustc::util::nodemap::{FxHashMap, NodeMap};
use rustc_data_structures::sync::{Lrc, RwLock, Lock};
use syntax::ast;
use syntax::ext::base::SyntaxExtension;
use syntax::symbol::Symbol;
use syntax_pos;
pub use rustc::middle::cstore::{NativeLibrary, NativeLibraryKind, LinkagePreference};
pub use rustc::middle::cstore::NativeLibraryKind::*;
pub use rustc::middle::cstore::{CrateSource, LibSource, ForeignModule};
pub use cstore_impl::{provide, provide_extern};
pub type CrateNumMap = IndexVec<CrateNum, CrateNum>;
pub use rustc_data_structures::sync::MetadataRef;
pub struct MetadataBlob(pub MetadataRef);
pub struct ImportedFileMap {
pub original_start_pos: syntax_pos::BytePos,
pub original_end_pos: syntax_pos::BytePos,
pub translated_filemap: Lrc<syntax_pos::FileMap>,
}
pub struct CrateMetadata {
pub name: Symbol,
pub extern_crate: Lock<Option<ExternCrate>>,
pub blob: MetadataBlob,
pub cnum_map: CrateNumMap,
pub cnum: CrateNum,
pub dependencies: Lock<Vec<CrateNum>>,
pub codemap_import_info: RwLock<Vec<ImportedFileMap>>,
pub alloc_decoding_state: AllocDecodingState,
pub root: schema::CrateRoot,
pub def_path_table: Lrc<DefPathTable>,
pub trait_impls: FxHashMap<(u32, DefIndex), schema::LazySeq<DefIndex>>,
pub dep_kind: Lock<DepKind>,
pub source: CrateSource,
pub proc_macros: Option<Vec<(ast::Name, Lrc<SyntaxExtension>)>>,
}
pub struct CStore {
metas: RwLock<IndexVec<CrateNum, Option<Lrc<CrateMetadata>>>>,
extern_mod_crate_map: Lock<NodeMap<CrateNum>>,
pub metadata_loader: Box<MetadataLoader + Sync>,
}
impl CStore {
pub fn new(metadata_loader: Box<MetadataLoader + Sync>) -> CStore {
CStore {
metas: RwLock::new(IndexVec::from_elem_n(None, 1)),
extern_mod_crate_map: Lock::new(FxHashMap()),
metadata_loader,
}
}
pub(super) fn alloc_new_crate_num(&self) -> CrateNum {
let mut metas = self.metas.borrow_mut();
let cnum = CrateNum::new(metas.len());
metas.push(None);
cnum
}
pub(super) fn get_crate_data(&self, cnum: CrateNum) -> Lrc<CrateMetadata> {
self.metas.borrow()[cnum].clone().unwrap()
}
pub(super) fn set_crate_data(&self, cnum: CrateNum, data: Lrc<CrateMetadata>) {
let mut metas = self.metas.borrow_mut();
assert!(metas[cnum].is_none(), "Overwriting crate metadata entry");
metas[cnum] = Some(data);
}
pub(super) fn iter_crate_data<I>(&self, mut i: I)
where I: FnMut(CrateNum, &Lrc<CrateMetadata>)
{
for (k, v) in self.metas.borrow().iter_enumerated() {
if let &Some(ref v) = v {
i(k, v);
}
}
}
pub(super) fn crate_dependencies_in_rpo(&self, krate: CrateNum) -> Vec<CrateNum> {
let mut ordering = Vec::new();
self.push_dependencies_in_postorder(&mut ordering, krate);
ordering.reverse();
ordering
}
pub(super) fn push_dependencies_in_postorder(&self,
ordering: &mut Vec<CrateNum>,
krate: CrateNum) {
if ordering.contains(&krate) {
return;
}
let data = self.get_crate_data(krate);
for &dep in data.dependencies.borrow().iter() {
if dep != krate {
self.push_dependencies_in_postorder(ordering, dep);
}
}
ordering.push(krate);
}
pub(super) fn do_postorder_cnums_untracked(&self) -> Vec<CrateNum> {
let mut ordering = Vec::new();
for (num, v) in self.metas.borrow().iter_enumerated() {
if let &Some(_) = v {
self.push_dependencies_in_postorder(&mut ordering, num);
}
}
return ordering
}
pub(super) fn add_extern_mod_stmt_cnum(&self, emod_id: ast::NodeId, cnum: CrateNum) {
self.extern_mod_crate_map.borrow_mut().insert(emod_id, cnum);
}
pub(super) fn do_extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum> {
self.extern_mod_crate_map.borrow().get(&emod_id).cloned()
}
}