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#![allow(non_camel_case_types)]
pub use self::MetadataBlob::*;
pub use self::LinkagePreference::*;
pub use self::NativeLibraryKind::*;
use back::svh::Svh;
use metadata::decoder;
use metadata::loader;
use session::search_paths::PathKind;
use util::nodemap::{FnvHashMap, NodeMap};
use std::cell::RefCell;
use std::rc::Rc;
use std::path::PathBuf;
use flate::Bytes;
use syntax::ast;
use syntax::codemap;
use syntax::parse::token::IdentInterner;
pub type cnum_map = FnvHashMap<ast::CrateNum, ast::CrateNum>;
pub enum MetadataBlob {
MetadataVec(Bytes),
MetadataArchive(loader::ArchiveMetadata),
}
pub struct ImportedFileMap {
pub original_start_pos: codemap::BytePos,
pub original_end_pos: codemap::BytePos,
pub translated_filemap: Rc<codemap::FileMap>
}
pub struct crate_metadata {
pub name: String,
pub data: MetadataBlob,
pub cnum_map: cnum_map,
pub cnum: ast::CrateNum,
pub codemap_import_info: Vec<ImportedFileMap>,
pub span: codemap::Span,
}
#[derive(Copy, Debug, PartialEq, Clone)]
pub enum LinkagePreference {
RequireDynamic,
RequireStatic,
}
enum_from_u32! {
#[derive(Copy, Clone, PartialEq)]
pub enum NativeLibraryKind {
NativeStatic,
NativeFramework,
NativeUnknown,
}
}
#[derive(PartialEq, Clone)]
pub struct CrateSource {
pub dylib: Option<(PathBuf, PathKind)>,
pub rlib: Option<(PathBuf, PathKind)>,
pub cnum: ast::CrateNum,
}
pub struct CStore {
metas: RefCell<FnvHashMap<ast::CrateNum, Rc<crate_metadata>>>,
extern_mod_crate_map: RefCell<NodeMap<ast::CrateNum>>,
used_crate_sources: RefCell<Vec<CrateSource>>,
used_libraries: RefCell<Vec<(String, NativeLibraryKind)>>,
used_link_args: RefCell<Vec<String>>,
pub intr: Rc<IdentInterner>,
}
impl CStore {
pub fn new(intr: Rc<IdentInterner>) -> CStore {
CStore {
metas: RefCell::new(FnvHashMap()),
extern_mod_crate_map: RefCell::new(FnvHashMap()),
used_crate_sources: RefCell::new(Vec::new()),
used_libraries: RefCell::new(Vec::new()),
used_link_args: RefCell::new(Vec::new()),
intr: intr
}
}
pub fn next_crate_num(&self) -> ast::CrateNum {
self.metas.borrow().len() as ast::CrateNum + 1
}
pub fn get_crate_data(&self, cnum: ast::CrateNum) -> Rc<crate_metadata> {
self.metas.borrow().get(&cnum).unwrap().clone()
}
pub fn get_crate_hash(&self, cnum: ast::CrateNum) -> Svh {
let cdata = self.get_crate_data(cnum);
decoder::get_crate_hash(cdata.data())
}
pub fn set_crate_data(&self, cnum: ast::CrateNum, data: Rc<crate_metadata>) {
self.metas.borrow_mut().insert(cnum, data);
}
pub fn iter_crate_data<I>(&self, mut i: I) where
I: FnMut(ast::CrateNum, &crate_metadata),
{
for (&k, v) in &*self.metas.borrow() {
i(k, &**v);
}
}
pub fn iter_crate_data_origins<I>(&self, mut i: I) where
I: FnMut(ast::CrateNum, &crate_metadata, Option<CrateSource>),
{
for (&k, v) in &*self.metas.borrow() {
let origin = self.get_used_crate_source(k);
origin.as_ref().map(|cs| { assert!(k == cs.cnum); });
i(k, &**v, origin);
}
}
pub fn add_used_crate_source(&self, src: CrateSource) {
let mut used_crate_sources = self.used_crate_sources.borrow_mut();
if !used_crate_sources.contains(&src) {
used_crate_sources.push(src);
}
}
pub fn get_used_crate_source(&self, cnum: ast::CrateNum)
-> Option<CrateSource> {
self.used_crate_sources.borrow_mut()
.iter().find(|source| source.cnum == cnum).cloned()
}
pub fn reset(&self) {
self.metas.borrow_mut().clear();
self.extern_mod_crate_map.borrow_mut().clear();
self.used_crate_sources.borrow_mut().clear();
self.used_libraries.borrow_mut().clear();
self.used_link_args.borrow_mut().clear();
}
pub fn get_used_crates(&self, prefer: LinkagePreference)
-> Vec<(ast::CrateNum, Option<PathBuf>)> {
let mut ordering = Vec::new();
fn visit(cstore: &CStore, cnum: ast::CrateNum,
ordering: &mut Vec<ast::CrateNum>) {
if ordering.contains(&cnum) { return }
let meta = cstore.get_crate_data(cnum);
for (_, &dep) in &meta.cnum_map {
visit(cstore, dep, ordering);
}
ordering.push(cnum);
};
for (&num, _) in &*self.metas.borrow() {
visit(self, num, &mut ordering);
}
ordering.reverse();
let mut libs = self.used_crate_sources.borrow()
.iter()
.map(|src| (src.cnum, match prefer {
RequireDynamic => src.dylib.clone().map(|p| p.0),
RequireStatic => src.rlib.clone().map(|p| p.0),
}))
.collect::<Vec<_>>();
libs.sort_by(|&(a, _), &(b, _)| {
ordering.position_elem(&a).cmp(&ordering.position_elem(&b))
});
libs
}
pub fn add_used_library(&self, lib: String, kind: NativeLibraryKind) {
assert!(!lib.is_empty());
self.used_libraries.borrow_mut().push((lib, kind));
}
pub fn get_used_libraries<'a>(&'a self)
-> &'a RefCell<Vec<(String,
NativeLibraryKind)>> {
&self.used_libraries
}
pub fn add_used_link_args(&self, args: &str) {
for s in args.split(' ').filter(|s| !s.is_empty()) {
self.used_link_args.borrow_mut().push(s.to_string());
}
}
pub fn get_used_link_args<'a>(&'a self) -> &'a RefCell<Vec<String> > {
&self.used_link_args
}
pub fn add_extern_mod_stmt_cnum(&self,
emod_id: ast::NodeId,
cnum: ast::CrateNum) {
self.extern_mod_crate_map.borrow_mut().insert(emod_id, cnum);
}
pub fn find_extern_mod_stmt_cnum(&self, emod_id: ast::NodeId)
-> Option<ast::CrateNum> {
self.extern_mod_crate_map.borrow().get(&emod_id).cloned()
}
}
impl crate_metadata {
pub fn data<'a>(&'a self) -> &'a [u8] { self.data.as_slice() }
pub fn name(&self) -> String { decoder::get_crate_name(self.data()) }
pub fn hash(&self) -> Svh { decoder::get_crate_hash(self.data()) }
}
impl MetadataBlob {
pub fn as_slice<'a>(&'a self) -> &'a [u8] {
let slice = match *self {
MetadataVec(ref vec) => &vec[..],
MetadataArchive(ref ar) => ar.as_slice(),
};
if slice.len() < 4 {
&[]
} else {
let len = (((slice[0] as u32) << 24) |
((slice[1] as u32) << 16) |
((slice[2] as u32) << 8) |
((slice[3] as u32) << 0)) as usize;
if len + 4 <= slice.len() {
&slice[4.. len + 4]
} else {
&[]
}
}
}
}