1282 lines
45 KiB
Rust
1282 lines
45 KiB
Rust
// Copyright 2012 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.
|
|
|
|
// Decoding metadata from a single crate's metadata
|
|
|
|
|
|
use metadata::cstore::crate_metadata;
|
|
use metadata::common::*;
|
|
use metadata::csearch::StaticMethodInfo;
|
|
use metadata::csearch;
|
|
use metadata::cstore;
|
|
use metadata::decoder;
|
|
use metadata::tydecode::{parse_ty_data, parse_def_id,
|
|
parse_type_param_def_data,
|
|
parse_bare_fn_ty_data, parse_trait_ref_data};
|
|
use middle::ty::{ImplContainer, TraitContainer};
|
|
use middle::ty;
|
|
use middle::typeck;
|
|
use middle::astencode::vtable_decoder_helpers;
|
|
|
|
use std::at_vec;
|
|
use std::u64;
|
|
use std::io;
|
|
use std::io::extensions::u64_from_be_bytes;
|
|
use std::option;
|
|
use std::vec;
|
|
use extra::ebml::reader;
|
|
use extra::ebml;
|
|
use extra::serialize::Decodable;
|
|
use syntax::ast_map;
|
|
use syntax::attr;
|
|
use syntax::parse::token::{IdentInterner, special_idents};
|
|
use syntax::print::pprust;
|
|
use syntax::ast;
|
|
use syntax::codemap;
|
|
use syntax::parse::token;
|
|
|
|
type Cmd = @crate_metadata;
|
|
|
|
// A function that takes a def_id relative to the crate being searched and
|
|
// returns a def_id relative to the compilation environment, i.e. if we hit a
|
|
// def_id for an item defined in another crate, somebody needs to figure out
|
|
// what crate that's in and give us a def_id that makes sense for the current
|
|
// build.
|
|
|
|
fn lookup_hash<'a>(d: ebml::Doc<'a>, eq_fn: |&[u8]| -> bool,
|
|
hash: u64) -> Option<ebml::Doc<'a>> {
|
|
let index = reader::get_doc(d, tag_index);
|
|
let table = reader::get_doc(index, tag_index_table);
|
|
let hash_pos = table.start + (hash % 256 * 4) as uint;
|
|
let pos = u64_from_be_bytes(d.data, hash_pos, 4) as uint;
|
|
let tagged_doc = reader::doc_at(d.data, pos);
|
|
|
|
let belt = tag_index_buckets_bucket_elt;
|
|
|
|
let mut ret = None;
|
|
reader::tagged_docs(tagged_doc.doc, belt, |elt| {
|
|
let pos = u64_from_be_bytes(elt.data, elt.start, 4) as uint;
|
|
if eq_fn(elt.data.slice(elt.start + 4, elt.end)) {
|
|
ret = Some(reader::doc_at(d.data, pos).doc);
|
|
false
|
|
} else {
|
|
true
|
|
}
|
|
});
|
|
ret
|
|
}
|
|
|
|
pub type GetCrateDataCb<'a> = 'a |ast::CrateNum| -> Cmd;
|
|
|
|
pub fn maybe_find_item<'a>(item_id: ast::NodeId,
|
|
items: ebml::Doc<'a>) -> Option<ebml::Doc<'a>> {
|
|
fn eq_item(bytes: &[u8], item_id: ast::NodeId) -> bool {
|
|
return u64_from_be_bytes(
|
|
bytes.slice(0u, 4u), 0u, 4u) as ast::NodeId
|
|
== item_id;
|
|
}
|
|
lookup_hash(items,
|
|
|a| eq_item(a, item_id),
|
|
(item_id as i64).hash())
|
|
}
|
|
|
|
fn find_item<'a>(item_id: ast::NodeId, items: ebml::Doc<'a>) -> ebml::Doc<'a> {
|
|
match maybe_find_item(item_id, items) {
|
|
None => fail!("lookup_item: id not found: {}", item_id),
|
|
Some(d) => d
|
|
}
|
|
}
|
|
|
|
// Looks up an item in the given metadata and returns an ebml doc pointing
|
|
// to the item data.
|
|
pub fn lookup_item<'a>(item_id: ast::NodeId, data: &'a [u8]) -> ebml::Doc<'a> {
|
|
let items = reader::get_doc(reader::Doc(data), tag_items);
|
|
find_item(item_id, items)
|
|
}
|
|
|
|
#[deriving(Eq)]
|
|
enum Family {
|
|
ImmStatic, // c
|
|
MutStatic, // b
|
|
Fn, // f
|
|
UnsafeFn, // u
|
|
StaticMethod, // F
|
|
UnsafeStaticMethod, // U
|
|
ForeignFn, // e
|
|
Type, // y
|
|
ForeignType, // T
|
|
Mod, // m
|
|
ForeignMod, // n
|
|
Enum, // t
|
|
TupleVariant, // v
|
|
StructVariant, // V
|
|
Impl, // i
|
|
Trait, // I
|
|
Struct, // S
|
|
PublicField, // g
|
|
PrivateField, // j
|
|
InheritedField // N
|
|
}
|
|
|
|
fn item_family(item: ebml::Doc) -> Family {
|
|
let fam = reader::get_doc(item, tag_items_data_item_family);
|
|
match reader::doc_as_u8(fam) as char {
|
|
'c' => ImmStatic,
|
|
'b' => MutStatic,
|
|
'f' => Fn,
|
|
'u' => UnsafeFn,
|
|
'F' => StaticMethod,
|
|
'U' => UnsafeStaticMethod,
|
|
'e' => ForeignFn,
|
|
'y' => Type,
|
|
'T' => ForeignType,
|
|
'm' => Mod,
|
|
'n' => ForeignMod,
|
|
't' => Enum,
|
|
'v' => TupleVariant,
|
|
'V' => StructVariant,
|
|
'i' => Impl,
|
|
'I' => Trait,
|
|
'S' => Struct,
|
|
'g' => PublicField,
|
|
'j' => PrivateField,
|
|
'N' => InheritedField,
|
|
c => fail!("unexpected family char: {}", c)
|
|
}
|
|
}
|
|
|
|
fn item_visibility(item: ebml::Doc) -> ast::Visibility {
|
|
match reader::maybe_get_doc(item, tag_items_data_item_visibility) {
|
|
None => ast::Public,
|
|
Some(visibility_doc) => {
|
|
match reader::doc_as_u8(visibility_doc) as char {
|
|
'y' => ast::Public,
|
|
'n' => ast::Private,
|
|
'i' => ast::Inherited,
|
|
_ => fail!("unknown visibility character")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn item_method_sort(item: ebml::Doc) -> char {
|
|
let mut ret = 'r';
|
|
reader::tagged_docs(item, tag_item_trait_method_sort, |doc| {
|
|
ret = doc.as_str_slice()[0] as char;
|
|
false
|
|
});
|
|
ret
|
|
}
|
|
|
|
fn item_symbol(item: ebml::Doc) -> ~str {
|
|
reader::get_doc(item, tag_items_data_item_symbol).as_str()
|
|
}
|
|
|
|
fn item_parent_item(d: ebml::Doc) -> Option<ast::DefId> {
|
|
let mut ret = None;
|
|
reader::tagged_docs(d, tag_items_data_parent_item, |did| {
|
|
ret = Some(reader::with_doc_data(did, parse_def_id));
|
|
false
|
|
});
|
|
ret
|
|
}
|
|
|
|
fn item_reqd_and_translated_parent_item(cnum: ast::CrateNum,
|
|
d: ebml::Doc) -> ast::DefId {
|
|
let trait_did = item_parent_item(d).expect("item without parent");
|
|
ast::DefId { crate: cnum, node: trait_did.node }
|
|
}
|
|
|
|
fn item_def_id(d: ebml::Doc, cdata: Cmd) -> ast::DefId {
|
|
let tagdoc = reader::get_doc(d, tag_def_id);
|
|
return translate_def_id(cdata, reader::with_doc_data(tagdoc, parse_def_id));
|
|
}
|
|
|
|
fn get_provided_source(d: ebml::Doc, cdata: Cmd) -> Option<ast::DefId> {
|
|
reader::maybe_get_doc(d, tag_item_method_provided_source).map(|doc| {
|
|
translate_def_id(cdata, reader::with_doc_data(doc, parse_def_id))
|
|
})
|
|
}
|
|
|
|
fn each_reexport(d: ebml::Doc, f: |ebml::Doc| -> bool) -> bool {
|
|
reader::tagged_docs(d, tag_items_data_item_reexport, f)
|
|
}
|
|
|
|
fn variant_disr_val(d: ebml::Doc) -> Option<ty::Disr> {
|
|
reader::maybe_get_doc(d, tag_disr_val).and_then(|val_doc| {
|
|
reader::with_doc_data(val_doc, |data| u64::parse_bytes(data, 10u))
|
|
})
|
|
}
|
|
|
|
fn doc_type(doc: ebml::Doc, tcx: ty::ctxt, cdata: Cmd) -> ty::t {
|
|
let tp = reader::get_doc(doc, tag_items_data_item_type);
|
|
parse_ty_data(tp.data, cdata.cnum, tp.start, tcx,
|
|
|_, did| translate_def_id(cdata, did))
|
|
}
|
|
|
|
fn doc_method_fty(doc: ebml::Doc, tcx: ty::ctxt, cdata: Cmd) -> ty::BareFnTy {
|
|
let tp = reader::get_doc(doc, tag_item_method_fty);
|
|
parse_bare_fn_ty_data(tp.data, cdata.cnum, tp.start, tcx,
|
|
|_, did| translate_def_id(cdata, did))
|
|
}
|
|
|
|
pub fn item_type(_item_id: ast::DefId, item: ebml::Doc,
|
|
tcx: ty::ctxt, cdata: Cmd) -> ty::t {
|
|
doc_type(item, tcx, cdata)
|
|
}
|
|
|
|
fn doc_trait_ref(doc: ebml::Doc, tcx: ty::ctxt, cdata: Cmd) -> ty::TraitRef {
|
|
parse_trait_ref_data(doc.data, cdata.cnum, doc.start, tcx,
|
|
|_, did| translate_def_id(cdata, did))
|
|
}
|
|
|
|
fn item_trait_ref(doc: ebml::Doc, tcx: ty::ctxt, cdata: Cmd) -> ty::TraitRef {
|
|
let tp = reader::get_doc(doc, tag_item_trait_ref);
|
|
doc_trait_ref(tp, tcx, cdata)
|
|
}
|
|
|
|
fn item_ty_param_defs(item: ebml::Doc,
|
|
tcx: ty::ctxt,
|
|
cdata: Cmd,
|
|
tag: uint)
|
|
-> @~[ty::TypeParameterDef] {
|
|
let mut bounds = ~[];
|
|
reader::tagged_docs(item, tag, |p| {
|
|
let bd = parse_type_param_def_data(
|
|
p.data, p.start, cdata.cnum, tcx,
|
|
|_, did| translate_def_id(cdata, did));
|
|
bounds.push(bd);
|
|
true
|
|
});
|
|
@bounds
|
|
}
|
|
|
|
fn item_region_param_defs(item_doc: ebml::Doc,
|
|
tcx: ty::ctxt,
|
|
cdata: Cmd)
|
|
-> @[ty::RegionParameterDef] {
|
|
at_vec::build(None, |push| {
|
|
reader::tagged_docs(item_doc, tag_region_param_def, |rp_doc| {
|
|
let ident_str_doc = reader::get_doc(rp_doc,
|
|
tag_region_param_def_ident);
|
|
let ident = item_name(tcx.sess.intr(), ident_str_doc);
|
|
let def_id_doc = reader::get_doc(rp_doc,
|
|
tag_region_param_def_def_id);
|
|
let def_id = reader::with_doc_data(def_id_doc, parse_def_id);
|
|
let def_id = translate_def_id(cdata, def_id);
|
|
push(ty::RegionParameterDef { ident: ident,
|
|
def_id: def_id });
|
|
true
|
|
});
|
|
})
|
|
}
|
|
|
|
fn item_ty_param_count(item: ebml::Doc) -> uint {
|
|
let mut n = 0u;
|
|
reader::tagged_docs(item, tag_items_data_item_ty_param_bounds,
|
|
|_p| { n += 1u; true } );
|
|
n
|
|
}
|
|
|
|
fn enum_variant_ids(item: ebml::Doc, cdata: Cmd) -> ~[ast::DefId] {
|
|
let mut ids: ~[ast::DefId] = ~[];
|
|
let v = tag_items_data_item_variant;
|
|
reader::tagged_docs(item, v, |p| {
|
|
let ext = reader::with_doc_data(p, parse_def_id);
|
|
ids.push(ast::DefId { crate: cdata.cnum, node: ext.node });
|
|
true
|
|
});
|
|
return ids;
|
|
}
|
|
|
|
pub fn item_path(item_doc: ebml::Doc) -> ast_map::Path {
|
|
let path_doc = reader::get_doc(item_doc, tag_path);
|
|
|
|
let len_doc = reader::get_doc(path_doc, tag_path_len);
|
|
let len = reader::doc_as_u32(len_doc) as uint;
|
|
|
|
let mut result = vec::with_capacity(len);
|
|
reader::docs(path_doc, |tag, elt_doc| {
|
|
if tag == tag_path_elem_mod {
|
|
let str = elt_doc.as_str_slice();
|
|
result.push(ast_map::PathMod(token::str_to_ident(str)));
|
|
} else if tag == tag_path_elem_name {
|
|
let str = elt_doc.as_str_slice();
|
|
result.push(ast_map::PathName(token::str_to_ident(str)));
|
|
} else if tag == tag_path_elem_pretty_name {
|
|
let name_doc = reader::get_doc(elt_doc,
|
|
tag_path_elem_pretty_name_ident);
|
|
let extra_doc = reader::get_doc(elt_doc,
|
|
tag_path_elem_pretty_name_extra);
|
|
let str = name_doc.as_str_slice();
|
|
let extra = reader::doc_as_u64(extra_doc);
|
|
result.push(ast_map::PathPrettyName(token::str_to_ident(str),
|
|
extra));
|
|
} else {
|
|
// ignore tag_path_len element
|
|
}
|
|
true
|
|
});
|
|
|
|
return result;
|
|
}
|
|
|
|
fn item_name(intr: @IdentInterner, item: ebml::Doc) -> ast::Ident {
|
|
let name = reader::get_doc(item, tag_paths_data_name);
|
|
let string = name.as_str_slice();
|
|
match intr.find_equiv(&string) {
|
|
None => token::str_to_ident(string),
|
|
Some(val) => ast::Ident::new(val as ast::Name),
|
|
}
|
|
}
|
|
|
|
pub fn item_to_def_like(item: ebml::Doc, did: ast::DefId, cnum: ast::CrateNum)
|
|
-> DefLike {
|
|
let fam = item_family(item);
|
|
match fam {
|
|
ImmStatic => DlDef(ast::DefStatic(did, false)),
|
|
MutStatic => DlDef(ast::DefStatic(did, true)),
|
|
Struct => DlDef(ast::DefStruct(did)),
|
|
UnsafeFn => DlDef(ast::DefFn(did, ast::UnsafeFn)),
|
|
Fn => DlDef(ast::DefFn(did, ast::ImpureFn)),
|
|
ForeignFn => DlDef(ast::DefFn(did, ast::ExternFn)),
|
|
StaticMethod | UnsafeStaticMethod => {
|
|
let purity = if fam == UnsafeStaticMethod { ast::UnsafeFn } else
|
|
{ ast::ImpureFn };
|
|
// def_static_method carries an optional field of its enclosing
|
|
// trait or enclosing impl (if this is an inherent static method).
|
|
// So we need to detect whether this is in a trait or not, which
|
|
// we do through the mildly hacky way of checking whether there is
|
|
// a trait_method_sort.
|
|
let provenance = if reader::maybe_get_doc(
|
|
item, tag_item_trait_method_sort).is_some() {
|
|
ast::FromTrait(item_reqd_and_translated_parent_item(cnum,
|
|
item))
|
|
} else {
|
|
ast::FromImpl(item_reqd_and_translated_parent_item(cnum,
|
|
item))
|
|
};
|
|
DlDef(ast::DefStaticMethod(did, provenance, purity))
|
|
}
|
|
Type | ForeignType => DlDef(ast::DefTy(did)),
|
|
Mod => DlDef(ast::DefMod(did)),
|
|
ForeignMod => DlDef(ast::DefForeignMod(did)),
|
|
StructVariant => {
|
|
let enum_did = item_reqd_and_translated_parent_item(cnum, item);
|
|
DlDef(ast::DefVariant(enum_did, did, true))
|
|
}
|
|
TupleVariant => {
|
|
let enum_did = item_reqd_and_translated_parent_item(cnum, item);
|
|
DlDef(ast::DefVariant(enum_did, did, false))
|
|
}
|
|
Trait => DlDef(ast::DefTrait(did)),
|
|
Enum => DlDef(ast::DefTy(did)),
|
|
Impl => DlImpl(did),
|
|
PublicField | PrivateField | InheritedField => DlField,
|
|
}
|
|
}
|
|
|
|
pub fn lookup_def(cnum: ast::CrateNum, data: &[u8], did_: ast::DefId) ->
|
|
ast::Def {
|
|
let item = lookup_item(did_.node, data);
|
|
let did = ast::DefId { crate: cnum, node: did_.node };
|
|
// We treat references to enums as references to types.
|
|
return def_like_to_def(item_to_def_like(item, did, cnum));
|
|
}
|
|
|
|
pub fn get_trait_def(cdata: Cmd,
|
|
item_id: ast::NodeId,
|
|
tcx: ty::ctxt) -> ty::TraitDef
|
|
{
|
|
let item_doc = lookup_item(item_id, cdata.data());
|
|
let tp_defs = item_ty_param_defs(item_doc, tcx, cdata,
|
|
tag_items_data_item_ty_param_bounds);
|
|
let rp_defs = item_region_param_defs(item_doc, tcx, cdata);
|
|
let mut bounds = ty::EmptyBuiltinBounds();
|
|
// Collect the builtin bounds from the encoded supertraits.
|
|
// FIXME(#8559): They should be encoded directly.
|
|
reader::tagged_docs(item_doc, tag_item_super_trait_ref, |trait_doc| {
|
|
// NB. Bypasses real supertraits. See get_supertraits() if you wanted them.
|
|
let trait_ref = doc_trait_ref(trait_doc, tcx, cdata);
|
|
tcx.lang_items.to_builtin_kind(trait_ref.def_id).map(|bound| {
|
|
bounds.add(bound);
|
|
});
|
|
true
|
|
});
|
|
ty::TraitDef {
|
|
generics: ty::Generics {type_param_defs: tp_defs,
|
|
region_param_defs: rp_defs},
|
|
bounds: bounds,
|
|
trait_ref: @item_trait_ref(item_doc, tcx, cdata)
|
|
}
|
|
}
|
|
|
|
pub fn get_type(cdata: Cmd, id: ast::NodeId, tcx: ty::ctxt)
|
|
-> ty::ty_param_bounds_and_ty {
|
|
|
|
let item = lookup_item(id, cdata.data());
|
|
|
|
let t = item_type(ast::DefId { crate: cdata.cnum, node: id }, item, tcx,
|
|
cdata);
|
|
|
|
let tp_defs = item_ty_param_defs(item, tcx, cdata, tag_items_data_item_ty_param_bounds);
|
|
let rp_defs = item_region_param_defs(item, tcx, cdata);
|
|
|
|
ty::ty_param_bounds_and_ty {
|
|
generics: ty::Generics {type_param_defs: tp_defs,
|
|
region_param_defs: rp_defs},
|
|
ty: t
|
|
}
|
|
}
|
|
|
|
pub fn get_type_param_count(data: &[u8], id: ast::NodeId) -> uint {
|
|
item_ty_param_count(lookup_item(id, data))
|
|
}
|
|
|
|
pub fn get_impl_trait(cdata: Cmd,
|
|
id: ast::NodeId,
|
|
tcx: ty::ctxt) -> Option<@ty::TraitRef>
|
|
{
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
reader::maybe_get_doc(item_doc, tag_item_trait_ref).map(|tp| {
|
|
@doc_trait_ref(tp, tcx, cdata)
|
|
})
|
|
}
|
|
|
|
pub fn get_impl_vtables(cdata: Cmd,
|
|
id: ast::NodeId,
|
|
tcx: ty::ctxt) -> typeck::impl_res
|
|
{
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
let vtables_doc = reader::get_doc(item_doc, tag_item_impl_vtables);
|
|
let mut decoder = reader::Decoder(vtables_doc);
|
|
|
|
typeck::impl_res {
|
|
trait_vtables: decoder.read_vtable_res(tcx, cdata),
|
|
self_vtables: decoder.read_vtable_param_res(tcx, cdata)
|
|
}
|
|
}
|
|
|
|
|
|
pub fn get_impl_method(intr: @IdentInterner, cdata: Cmd, id: ast::NodeId,
|
|
name: ast::Ident) -> Option<ast::DefId> {
|
|
let items = reader::get_doc(reader::Doc(cdata.data()), tag_items);
|
|
let mut found = None;
|
|
reader::tagged_docs(find_item(id, items), tag_item_impl_method, |mid| {
|
|
let m_did = reader::with_doc_data(mid, parse_def_id);
|
|
if item_name(intr, find_item(m_did.node, items)) == name {
|
|
found = Some(translate_def_id(cdata, m_did));
|
|
}
|
|
true
|
|
});
|
|
found
|
|
}
|
|
|
|
pub fn get_symbol(data: &[u8], id: ast::NodeId) -> ~str {
|
|
return item_symbol(lookup_item(id, data));
|
|
}
|
|
|
|
// Something that a name can resolve to.
|
|
#[deriving(Clone)]
|
|
pub enum DefLike {
|
|
DlDef(ast::Def),
|
|
DlImpl(ast::DefId),
|
|
DlField
|
|
}
|
|
|
|
pub fn def_like_to_def(def_like: DefLike) -> ast::Def {
|
|
match def_like {
|
|
DlDef(def) => return def,
|
|
DlImpl(..) => fail!("found impl in def_like_to_def"),
|
|
DlField => fail!("found field in def_like_to_def")
|
|
}
|
|
}
|
|
|
|
/// Iterates over the language items in the given crate.
|
|
pub fn each_lang_item(cdata: Cmd, f: |ast::NodeId, uint| -> bool) -> bool {
|
|
let root = reader::Doc(cdata.data());
|
|
let lang_items = reader::get_doc(root, tag_lang_items);
|
|
reader::tagged_docs(lang_items, tag_lang_items_item, |item_doc| {
|
|
let id_doc = reader::get_doc(item_doc, tag_lang_items_item_id);
|
|
let id = reader::doc_as_u32(id_doc) as uint;
|
|
let node_id_doc = reader::get_doc(item_doc,
|
|
tag_lang_items_item_node_id);
|
|
let node_id = reader::doc_as_u32(node_id_doc) as ast::NodeId;
|
|
|
|
f(node_id, id)
|
|
})
|
|
}
|
|
|
|
fn each_child_of_item_or_crate(intr: @IdentInterner,
|
|
cdata: Cmd,
|
|
item_doc: ebml::Doc,
|
|
get_crate_data: GetCrateDataCb,
|
|
callback: |DefLike,
|
|
ast::Ident,
|
|
ast::Visibility|) {
|
|
// Iterate over all children.
|
|
let _ = reader::tagged_docs(item_doc, tag_mod_child, |child_info_doc| {
|
|
let child_def_id = reader::with_doc_data(child_info_doc,
|
|
parse_def_id);
|
|
let child_def_id = translate_def_id(cdata, child_def_id);
|
|
|
|
// This item may be in yet another crate if it was the child of a
|
|
// reexport.
|
|
let other_crates_items = if child_def_id.crate == cdata.cnum {
|
|
reader::get_doc(reader::Doc(cdata.data()), tag_items)
|
|
} else {
|
|
let crate_data = get_crate_data(child_def_id.crate);
|
|
reader::get_doc(reader::Doc(crate_data.data()), tag_items)
|
|
};
|
|
|
|
// Get the item.
|
|
match maybe_find_item(child_def_id.node, other_crates_items) {
|
|
None => {}
|
|
Some(child_item_doc) => {
|
|
// Hand off the item to the callback.
|
|
let child_name = item_name(intr, child_item_doc);
|
|
let def_like = item_to_def_like(child_item_doc,
|
|
child_def_id,
|
|
cdata.cnum);
|
|
let visibility = item_visibility(child_item_doc);
|
|
callback(def_like, child_name, visibility);
|
|
|
|
}
|
|
}
|
|
|
|
true
|
|
});
|
|
|
|
// As a special case, iterate over all static methods of
|
|
// associated implementations too. This is a bit of a botch.
|
|
// --pcwalton
|
|
let _ = reader::tagged_docs(item_doc,
|
|
tag_items_data_item_inherent_impl,
|
|
|inherent_impl_def_id_doc| {
|
|
let inherent_impl_def_id = item_def_id(inherent_impl_def_id_doc,
|
|
cdata);
|
|
let items = reader::get_doc(reader::Doc(cdata.data()), tag_items);
|
|
match maybe_find_item(inherent_impl_def_id.node, items) {
|
|
None => {}
|
|
Some(inherent_impl_doc) => {
|
|
let _ = reader::tagged_docs(inherent_impl_doc,
|
|
tag_item_impl_method,
|
|
|impl_method_def_id_doc| {
|
|
let impl_method_def_id =
|
|
reader::with_doc_data(impl_method_def_id_doc,
|
|
parse_def_id);
|
|
let impl_method_def_id =
|
|
translate_def_id(cdata, impl_method_def_id);
|
|
match maybe_find_item(impl_method_def_id.node, items) {
|
|
None => {}
|
|
Some(impl_method_doc) => {
|
|
match item_family(impl_method_doc) {
|
|
StaticMethod | UnsafeStaticMethod => {
|
|
// Hand off the static method
|
|
// to the callback.
|
|
let static_method_name =
|
|
item_name(intr, impl_method_doc);
|
|
let static_method_def_like =
|
|
item_to_def_like(impl_method_doc,
|
|
impl_method_def_id,
|
|
cdata.cnum);
|
|
callback(static_method_def_like,
|
|
static_method_name,
|
|
item_visibility(impl_method_doc));
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
}
|
|
|
|
true
|
|
});
|
|
}
|
|
}
|
|
|
|
true
|
|
});
|
|
|
|
// Iterate over all reexports.
|
|
let _ = each_reexport(item_doc, |reexport_doc| {
|
|
let def_id_doc = reader::get_doc(reexport_doc,
|
|
tag_items_data_item_reexport_def_id);
|
|
let child_def_id = reader::with_doc_data(def_id_doc,
|
|
parse_def_id);
|
|
let child_def_id = translate_def_id(cdata, child_def_id);
|
|
|
|
let name_doc = reader::get_doc(reexport_doc,
|
|
tag_items_data_item_reexport_name);
|
|
let name = name_doc.as_str_slice();
|
|
|
|
// This reexport may be in yet another crate.
|
|
let other_crates_items = if child_def_id.crate == cdata.cnum {
|
|
reader::get_doc(reader::Doc(cdata.data()), tag_items)
|
|
} else {
|
|
let crate_data = get_crate_data(child_def_id.crate);
|
|
reader::get_doc(reader::Doc(crate_data.data()), tag_items)
|
|
};
|
|
|
|
// Get the item.
|
|
match maybe_find_item(child_def_id.node, other_crates_items) {
|
|
None => {}
|
|
Some(child_item_doc) => {
|
|
// Hand off the item to the callback.
|
|
let def_like = item_to_def_like(child_item_doc,
|
|
child_def_id,
|
|
cdata.cnum);
|
|
// These items have a public visibility because they're part of
|
|
// a public re-export.
|
|
callback(def_like, token::str_to_ident(name), ast::Public);
|
|
}
|
|
}
|
|
|
|
true
|
|
});
|
|
}
|
|
|
|
/// Iterates over each child of the given item.
|
|
pub fn each_child_of_item(intr: @IdentInterner,
|
|
cdata: Cmd,
|
|
id: ast::NodeId,
|
|
get_crate_data: GetCrateDataCb,
|
|
callback: |DefLike, ast::Ident, ast::Visibility|) {
|
|
// Find the item.
|
|
let root_doc = reader::Doc(cdata.data());
|
|
let items = reader::get_doc(root_doc, tag_items);
|
|
let item_doc = match maybe_find_item(id, items) {
|
|
None => return,
|
|
Some(item_doc) => item_doc,
|
|
};
|
|
|
|
each_child_of_item_or_crate(intr,
|
|
cdata,
|
|
item_doc,
|
|
get_crate_data,
|
|
callback)
|
|
}
|
|
|
|
/// Iterates over all the top-level crate items.
|
|
pub fn each_top_level_item_of_crate(intr: @IdentInterner,
|
|
cdata: Cmd,
|
|
get_crate_data: GetCrateDataCb,
|
|
callback: |DefLike,
|
|
ast::Ident,
|
|
ast::Visibility|) {
|
|
let root_doc = reader::Doc(cdata.data());
|
|
let misc_info_doc = reader::get_doc(root_doc, tag_misc_info);
|
|
let crate_items_doc = reader::get_doc(misc_info_doc,
|
|
tag_misc_info_crate_items);
|
|
|
|
each_child_of_item_or_crate(intr,
|
|
cdata,
|
|
crate_items_doc,
|
|
get_crate_data,
|
|
callback)
|
|
}
|
|
|
|
pub fn get_item_path(cdata: Cmd, id: ast::NodeId) -> ast_map::Path {
|
|
item_path(lookup_item(id, cdata.data()))
|
|
}
|
|
|
|
pub type decode_inlined_item<'a> = 'a |cdata: @cstore::crate_metadata,
|
|
tcx: ty::ctxt,
|
|
path: ast_map::Path,
|
|
par_doc: ebml::Doc|
|
|
-> Option<ast::InlinedItem>;
|
|
|
|
pub fn maybe_get_item_ast(cdata: Cmd, tcx: ty::ctxt,
|
|
id: ast::NodeId,
|
|
decode_inlined_item: decode_inlined_item)
|
|
-> csearch::found_ast {
|
|
debug!("Looking up item: {}", id);
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
let path = {
|
|
let item_path = item_path(item_doc);
|
|
item_path.init().to_owned()
|
|
};
|
|
match decode_inlined_item(cdata, tcx, /*bad*/path.clone(), item_doc) {
|
|
Some(ref ii) => csearch::found(*ii),
|
|
None => {
|
|
match item_parent_item(item_doc) {
|
|
Some(did) => {
|
|
let did = translate_def_id(cdata, did);
|
|
let parent_item = lookup_item(did.node, cdata.data());
|
|
match decode_inlined_item(cdata, tcx, path, parent_item) {
|
|
Some(ref ii) => csearch::found_parent(did, *ii),
|
|
None => csearch::not_found
|
|
}
|
|
}
|
|
None => csearch::not_found
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn get_enum_variants(intr: @IdentInterner, cdata: Cmd, id: ast::NodeId,
|
|
tcx: ty::ctxt) -> ~[@ty::VariantInfo] {
|
|
let data = cdata.data();
|
|
let items = reader::get_doc(reader::Doc(data), tag_items);
|
|
let item = find_item(id, items);
|
|
let mut infos: ~[@ty::VariantInfo] = ~[];
|
|
let variant_ids = enum_variant_ids(item, cdata);
|
|
let mut disr_val = 0;
|
|
for did in variant_ids.iter() {
|
|
let item = find_item(did.node, items);
|
|
let ctor_ty = item_type(ast::DefId { crate: cdata.cnum, node: id},
|
|
item, tcx, cdata);
|
|
let name = item_name(intr, item);
|
|
let arg_tys = match ty::get(ctor_ty).sty {
|
|
ty::ty_bare_fn(ref f) => f.sig.inputs.clone(),
|
|
_ => ~[], // Nullary enum variant.
|
|
};
|
|
match variant_disr_val(item) {
|
|
Some(val) => { disr_val = val; }
|
|
_ => { /* empty */ }
|
|
}
|
|
infos.push(@ty::VariantInfo{
|
|
args: arg_tys,
|
|
arg_names: None,
|
|
ctor_ty: ctor_ty,
|
|
name: name,
|
|
// I'm not even sure if we encode visibility
|
|
// for variants -- TEST -- tjc
|
|
id: *did,
|
|
disr_val: disr_val,
|
|
vis: ast::Inherited});
|
|
disr_val += 1;
|
|
}
|
|
return infos;
|
|
}
|
|
|
|
fn get_explicit_self(item: ebml::Doc) -> ast::ExplicitSelf_ {
|
|
fn get_mutability(ch: u8) -> ast::Mutability {
|
|
match ch as char {
|
|
'i' => ast::MutImmutable,
|
|
'm' => ast::MutMutable,
|
|
_ => fail!("unknown mutability character: `{}`", ch as char),
|
|
}
|
|
}
|
|
|
|
let explicit_self_doc = reader::get_doc(item, tag_item_trait_method_explicit_self);
|
|
let string = explicit_self_doc.as_str_slice();
|
|
|
|
let explicit_self_kind = string[0];
|
|
match explicit_self_kind as char {
|
|
's' => ast::SelfStatic,
|
|
'v' => ast::SelfValue,
|
|
'@' => ast::SelfBox,
|
|
'~' => ast::SelfUniq,
|
|
// FIXME(#4846) expl. region
|
|
'&' => ast::SelfRegion(None, get_mutability(string[1])),
|
|
_ => fail!("unknown self type code: `{}`", explicit_self_kind as char)
|
|
}
|
|
}
|
|
|
|
fn item_impl_methods(intr: @IdentInterner, cdata: Cmd, item: ebml::Doc,
|
|
tcx: ty::ctxt) -> ~[@ty::Method] {
|
|
let mut rslt = ~[];
|
|
reader::tagged_docs(item, tag_item_impl_method, |doc| {
|
|
let m_did = reader::with_doc_data(doc, parse_def_id);
|
|
rslt.push(@get_method(intr, cdata, m_did.node, tcx));
|
|
true
|
|
});
|
|
|
|
rslt
|
|
}
|
|
|
|
/// Returns information about the given implementation.
|
|
pub fn get_impl(intr: @IdentInterner, cdata: Cmd, impl_id: ast::NodeId,
|
|
tcx: ty::ctxt)
|
|
-> ty::Impl {
|
|
let data = cdata.data();
|
|
let impl_item = lookup_item(impl_id, data);
|
|
ty::Impl {
|
|
did: ast::DefId {
|
|
crate: cdata.cnum,
|
|
node: impl_id,
|
|
},
|
|
ident: item_name(intr, impl_item),
|
|
methods: item_impl_methods(intr, cdata, impl_item, tcx),
|
|
}
|
|
}
|
|
|
|
pub fn get_method_name_and_explicit_self(
|
|
intr: @IdentInterner,
|
|
cdata: Cmd,
|
|
id: ast::NodeId) -> (ast::Ident, ast::ExplicitSelf_)
|
|
{
|
|
let method_doc = lookup_item(id, cdata.data());
|
|
let name = item_name(intr, method_doc);
|
|
let explicit_self = get_explicit_self(method_doc);
|
|
(name, explicit_self)
|
|
}
|
|
|
|
pub fn get_method(intr: @IdentInterner, cdata: Cmd, id: ast::NodeId,
|
|
tcx: ty::ctxt) -> ty::Method
|
|
{
|
|
let method_doc = lookup_item(id, cdata.data());
|
|
let def_id = item_def_id(method_doc, cdata);
|
|
|
|
let container_id = item_reqd_and_translated_parent_item(cdata.cnum,
|
|
method_doc);
|
|
let container_doc = lookup_item(container_id.node, cdata.data());
|
|
let container = match item_family(container_doc) {
|
|
Trait => TraitContainer(container_id),
|
|
_ => ImplContainer(container_id),
|
|
};
|
|
|
|
let name = item_name(intr, method_doc);
|
|
let type_param_defs = item_ty_param_defs(method_doc, tcx, cdata,
|
|
tag_item_method_tps);
|
|
let rp_defs = item_region_param_defs(method_doc, tcx, cdata);
|
|
let fty = doc_method_fty(method_doc, tcx, cdata);
|
|
let vis = item_visibility(method_doc);
|
|
let explicit_self = get_explicit_self(method_doc);
|
|
let provided_source = get_provided_source(method_doc, cdata);
|
|
|
|
ty::Method::new(
|
|
name,
|
|
ty::Generics {
|
|
type_param_defs: type_param_defs,
|
|
region_param_defs: rp_defs,
|
|
},
|
|
fty,
|
|
explicit_self,
|
|
vis,
|
|
def_id,
|
|
container,
|
|
provided_source
|
|
)
|
|
}
|
|
|
|
pub fn get_trait_method_def_ids(cdata: Cmd,
|
|
id: ast::NodeId) -> ~[ast::DefId] {
|
|
let data = cdata.data();
|
|
let item = lookup_item(id, data);
|
|
let mut result = ~[];
|
|
reader::tagged_docs(item, tag_item_trait_method, |mth| {
|
|
result.push(item_def_id(mth, cdata));
|
|
true
|
|
});
|
|
result
|
|
}
|
|
|
|
pub fn get_item_variances(cdata: Cmd, id: ast::NodeId) -> ty::ItemVariances {
|
|
let data = cdata.data();
|
|
let item_doc = lookup_item(id, data);
|
|
let variance_doc = reader::get_doc(item_doc, tag_item_variances);
|
|
let mut decoder = reader::Decoder(variance_doc);
|
|
Decodable::decode(&mut decoder)
|
|
}
|
|
|
|
pub fn get_provided_trait_methods(intr: @IdentInterner, cdata: Cmd,
|
|
id: ast::NodeId, tcx: ty::ctxt) ->
|
|
~[@ty::Method] {
|
|
let data = cdata.data();
|
|
let item = lookup_item(id, data);
|
|
let mut result = ~[];
|
|
|
|
reader::tagged_docs(item, tag_item_trait_method, |mth_id| {
|
|
let did = item_def_id(mth_id, cdata);
|
|
let mth = lookup_item(did.node, data);
|
|
|
|
if item_method_sort(mth) == 'p' {
|
|
result.push(@get_method(intr, cdata, did.node, tcx));
|
|
}
|
|
true
|
|
});
|
|
|
|
return result;
|
|
}
|
|
|
|
/// Returns the supertraits of the given trait.
|
|
pub fn get_supertraits(cdata: Cmd, id: ast::NodeId, tcx: ty::ctxt)
|
|
-> ~[@ty::TraitRef] {
|
|
let mut results = ~[];
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
reader::tagged_docs(item_doc, tag_item_super_trait_ref, |trait_doc| {
|
|
// NB. Only reads the ones that *aren't* builtin-bounds. See also
|
|
// get_trait_def() for collecting the builtin bounds.
|
|
// FIXME(#8559): The builtin bounds shouldn't be encoded in the first place.
|
|
let trait_ref = doc_trait_ref(trait_doc, tcx, cdata);
|
|
if tcx.lang_items.to_builtin_kind(trait_ref.def_id).is_none() {
|
|
results.push(@trait_ref);
|
|
}
|
|
true
|
|
});
|
|
return results;
|
|
}
|
|
|
|
pub fn get_type_name_if_impl(cdata: Cmd,
|
|
node_id: ast::NodeId) -> Option<ast::Ident> {
|
|
let item = lookup_item(node_id, cdata.data());
|
|
if item_family(item) != Impl {
|
|
return None;
|
|
}
|
|
|
|
let mut ret = None;
|
|
reader::tagged_docs(item, tag_item_impl_type_basename, |doc| {
|
|
ret = Some(token::str_to_ident(doc.as_str_slice()));
|
|
false
|
|
});
|
|
|
|
ret
|
|
}
|
|
|
|
pub fn get_static_methods_if_impl(intr: @IdentInterner,
|
|
cdata: Cmd,
|
|
node_id: ast::NodeId)
|
|
-> Option<~[StaticMethodInfo]> {
|
|
let item = lookup_item(node_id, cdata.data());
|
|
if item_family(item) != Impl {
|
|
return None;
|
|
}
|
|
|
|
// If this impl implements a trait, don't consider it.
|
|
let ret = reader::tagged_docs(item, tag_item_trait_ref, |_doc| {
|
|
false
|
|
});
|
|
|
|
if !ret { return None }
|
|
|
|
let mut impl_method_ids = ~[];
|
|
reader::tagged_docs(item, tag_item_impl_method, |impl_method_doc| {
|
|
impl_method_ids.push(reader::with_doc_data(impl_method_doc, parse_def_id));
|
|
true
|
|
});
|
|
|
|
let mut static_impl_methods = ~[];
|
|
for impl_method_id in impl_method_ids.iter() {
|
|
let impl_method_doc = lookup_item(impl_method_id.node, cdata.data());
|
|
let family = item_family(impl_method_doc);
|
|
match family {
|
|
StaticMethod | UnsafeStaticMethod => {
|
|
let purity;
|
|
match item_family(impl_method_doc) {
|
|
StaticMethod => purity = ast::ImpureFn,
|
|
UnsafeStaticMethod => purity = ast::UnsafeFn,
|
|
_ => fail!()
|
|
}
|
|
|
|
static_impl_methods.push(StaticMethodInfo {
|
|
ident: item_name(intr, impl_method_doc),
|
|
def_id: item_def_id(impl_method_doc, cdata),
|
|
purity: purity,
|
|
vis: item_visibility(impl_method_doc),
|
|
});
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
return Some(static_impl_methods);
|
|
}
|
|
|
|
pub fn get_item_attrs(cdata: Cmd,
|
|
node_id: ast::NodeId,
|
|
f: |~[@ast::MetaItem]|) {
|
|
let item = lookup_item(node_id, cdata.data());
|
|
reader::tagged_docs(item, tag_attributes, |attributes| {
|
|
reader::tagged_docs(attributes, tag_attribute, |attribute| {
|
|
f(get_meta_items(attribute));
|
|
true
|
|
});
|
|
true
|
|
});
|
|
}
|
|
|
|
fn struct_field_family_to_visibility(family: Family) -> ast::Visibility {
|
|
match family {
|
|
PublicField => ast::Public,
|
|
PrivateField => ast::Private,
|
|
InheritedField => ast::Inherited,
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
pub fn get_struct_fields(intr: @IdentInterner, cdata: Cmd, id: ast::NodeId)
|
|
-> ~[ty::field_ty] {
|
|
let data = cdata.data();
|
|
let item = lookup_item(id, data);
|
|
let mut result = ~[];
|
|
reader::tagged_docs(item, tag_item_field, |an_item| {
|
|
let f = item_family(an_item);
|
|
if f == PublicField || f == PrivateField || f == InheritedField {
|
|
// FIXME #6993: name should be of type Name, not Ident
|
|
let name = item_name(intr, an_item);
|
|
let did = item_def_id(an_item, cdata);
|
|
result.push(ty::field_ty {
|
|
name: name.name,
|
|
id: did, vis:
|
|
struct_field_family_to_visibility(f),
|
|
});
|
|
}
|
|
true
|
|
});
|
|
reader::tagged_docs(item, tag_item_unnamed_field, |an_item| {
|
|
let did = item_def_id(an_item, cdata);
|
|
result.push(ty::field_ty {
|
|
name: special_idents::unnamed_field.name,
|
|
id: did,
|
|
vis: ast::Inherited,
|
|
});
|
|
true
|
|
});
|
|
result
|
|
}
|
|
|
|
pub fn get_item_visibility(cdata: Cmd, id: ast::NodeId)
|
|
-> ast::Visibility {
|
|
item_visibility(lookup_item(id, cdata.data()))
|
|
}
|
|
|
|
fn get_meta_items(md: ebml::Doc) -> ~[@ast::MetaItem] {
|
|
let mut items: ~[@ast::MetaItem] = ~[];
|
|
reader::tagged_docs(md, tag_meta_item_word, |meta_item_doc| {
|
|
let nd = reader::get_doc(meta_item_doc, tag_meta_item_name);
|
|
let n = nd.as_str_slice().to_managed();
|
|
items.push(attr::mk_word_item(n));
|
|
true
|
|
});
|
|
reader::tagged_docs(md, tag_meta_item_name_value, |meta_item_doc| {
|
|
let nd = reader::get_doc(meta_item_doc, tag_meta_item_name);
|
|
let vd = reader::get_doc(meta_item_doc, tag_meta_item_value);
|
|
let n = nd.as_str_slice().to_managed();
|
|
let v = vd.as_str_slice().to_managed();
|
|
// FIXME (#623): Should be able to decode MetaNameValue variants,
|
|
// but currently the encoder just drops them
|
|
items.push(attr::mk_name_value_item_str(n, v));
|
|
true
|
|
});
|
|
reader::tagged_docs(md, tag_meta_item_list, |meta_item_doc| {
|
|
let nd = reader::get_doc(meta_item_doc, tag_meta_item_name);
|
|
let n = nd.as_str_slice().to_managed();
|
|
let subitems = get_meta_items(meta_item_doc);
|
|
items.push(attr::mk_list_item(n, subitems));
|
|
true
|
|
});
|
|
return items;
|
|
}
|
|
|
|
fn get_attributes(md: ebml::Doc) -> ~[ast::Attribute] {
|
|
let mut attrs: ~[ast::Attribute] = ~[];
|
|
match reader::maybe_get_doc(md, tag_attributes) {
|
|
option::Some(attrs_d) => {
|
|
reader::tagged_docs(attrs_d, tag_attribute, |attr_doc| {
|
|
let meta_items = get_meta_items(attr_doc);
|
|
// Currently it's only possible to have a single meta item on
|
|
// an attribute
|
|
assert_eq!(meta_items.len(), 1u);
|
|
let meta_item = meta_items[0];
|
|
attrs.push(
|
|
codemap::Spanned {
|
|
node: ast::Attribute_ {
|
|
style: ast::AttrOuter,
|
|
value: meta_item,
|
|
is_sugared_doc: false,
|
|
},
|
|
span: codemap::DUMMY_SP
|
|
});
|
|
true
|
|
});
|
|
}
|
|
option::None => ()
|
|
}
|
|
return attrs;
|
|
}
|
|
|
|
fn list_crate_attributes(intr: @IdentInterner, md: ebml::Doc, hash: &str,
|
|
out: &mut io::Writer) {
|
|
write!(out, "=Crate Attributes ({})=\n", hash);
|
|
|
|
let r = get_attributes(md);
|
|
for attr in r.iter() {
|
|
write!(out, "{}\n", pprust::attribute_to_str(attr, intr));
|
|
}
|
|
|
|
write!(out, "\n\n");
|
|
}
|
|
|
|
pub fn get_crate_attributes(data: &[u8]) -> ~[ast::Attribute] {
|
|
return get_attributes(reader::Doc(data));
|
|
}
|
|
|
|
#[deriving(Clone)]
|
|
pub struct CrateDep {
|
|
cnum: ast::CrateNum,
|
|
name: ast::Ident,
|
|
vers: @str,
|
|
hash: @str
|
|
}
|
|
|
|
pub fn get_crate_deps(data: &[u8]) -> ~[CrateDep] {
|
|
let mut deps: ~[CrateDep] = ~[];
|
|
let cratedoc = reader::Doc(data);
|
|
let depsdoc = reader::get_doc(cratedoc, tag_crate_deps);
|
|
let mut crate_num = 1;
|
|
fn docstr(doc: ebml::Doc, tag_: uint) -> @str {
|
|
let d = reader::get_doc(doc, tag_);
|
|
d.as_str_slice().to_managed()
|
|
}
|
|
reader::tagged_docs(depsdoc, tag_crate_dep, |depdoc| {
|
|
deps.push(CrateDep {cnum: crate_num,
|
|
name: token::str_to_ident(docstr(depdoc, tag_crate_dep_name)),
|
|
vers: docstr(depdoc, tag_crate_dep_vers),
|
|
hash: docstr(depdoc, tag_crate_dep_hash)});
|
|
crate_num += 1;
|
|
true
|
|
});
|
|
return deps;
|
|
}
|
|
|
|
fn list_crate_deps(data: &[u8], out: &mut io::Writer) {
|
|
write!(out, "=External Dependencies=\n");
|
|
|
|
let r = get_crate_deps(data);
|
|
for dep in r.iter() {
|
|
write!(out, "{} {}-{}-{}\n",
|
|
dep.cnum, token::ident_to_str(&dep.name), dep.hash, dep.vers);
|
|
}
|
|
|
|
write!(out, "\n");
|
|
}
|
|
|
|
pub fn get_crate_hash(data: &[u8]) -> @str {
|
|
let cratedoc = reader::Doc(data);
|
|
let hashdoc = reader::get_doc(cratedoc, tag_crate_hash);
|
|
hashdoc.as_str_slice().to_managed()
|
|
}
|
|
|
|
pub fn get_crate_vers(data: &[u8]) -> @str {
|
|
let attrs = decoder::get_crate_attributes(data);
|
|
match attr::find_crateid(attrs) {
|
|
None => @"0.0",
|
|
Some(crateid) => crateid.version_or_default().to_managed(),
|
|
}
|
|
}
|
|
|
|
pub fn list_crate_metadata(intr: @IdentInterner, bytes: &[u8],
|
|
out: &mut io::Writer) {
|
|
let hash = get_crate_hash(bytes);
|
|
let md = reader::Doc(bytes);
|
|
list_crate_attributes(intr, md, hash, out);
|
|
list_crate_deps(bytes, out);
|
|
}
|
|
|
|
// Translates a def_id from an external crate to a def_id for the current
|
|
// compilation environment. We use this when trying to load types from
|
|
// external crates - if those types further refer to types in other crates
|
|
// then we must translate the crate number from that encoded in the external
|
|
// crate to the correct local crate number.
|
|
pub fn translate_def_id(cdata: Cmd, did: ast::DefId) -> ast::DefId {
|
|
if did.crate == ast::LOCAL_CRATE {
|
|
return ast::DefId { crate: cdata.cnum, node: did.node };
|
|
}
|
|
|
|
let cnum_map = cdata.cnum_map.borrow();
|
|
match cnum_map.get().find(&did.crate) {
|
|
Some(&n) => {
|
|
ast::DefId {
|
|
crate: n,
|
|
node: did.node,
|
|
}
|
|
}
|
|
None => fail!("didn't find a crate in the cnum_map")
|
|
}
|
|
}
|
|
|
|
pub fn each_impl(cdata: Cmd, callback: |ast::DefId|) {
|
|
let impls_doc = reader::get_doc(reader::Doc(cdata.data()), tag_impls);
|
|
let _ = reader::tagged_docs(impls_doc, tag_impls_impl, |impl_doc| {
|
|
callback(item_def_id(impl_doc, cdata));
|
|
true
|
|
});
|
|
}
|
|
|
|
pub fn each_implementation_for_type(cdata: Cmd,
|
|
id: ast::NodeId,
|
|
callback: |ast::DefId|) {
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
reader::tagged_docs(item_doc,
|
|
tag_items_data_item_inherent_impl,
|
|
|impl_doc| {
|
|
let implementation_def_id = item_def_id(impl_doc, cdata);
|
|
callback(implementation_def_id);
|
|
true
|
|
});
|
|
}
|
|
|
|
pub fn each_implementation_for_trait(cdata: Cmd,
|
|
id: ast::NodeId,
|
|
callback: |ast::DefId|) {
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
|
|
let _ = reader::tagged_docs(item_doc,
|
|
tag_items_data_item_extension_impl,
|
|
|impl_doc| {
|
|
let implementation_def_id = item_def_id(impl_doc, cdata);
|
|
callback(implementation_def_id);
|
|
true
|
|
});
|
|
}
|
|
|
|
pub fn get_trait_of_method(cdata: Cmd, id: ast::NodeId, tcx: ty::ctxt)
|
|
-> Option<ast::DefId> {
|
|
let item_doc = lookup_item(id, cdata.data());
|
|
let parent_item_id = match item_parent_item(item_doc) {
|
|
None => return None,
|
|
Some(item_id) => item_id,
|
|
};
|
|
let parent_item_id = translate_def_id(cdata, parent_item_id);
|
|
let parent_item_doc = lookup_item(parent_item_id.node, cdata.data());
|
|
match item_family(parent_item_doc) {
|
|
Trait => Some(item_def_id(parent_item_doc, cdata)),
|
|
Impl => {
|
|
reader::maybe_get_doc(parent_item_doc, tag_item_trait_ref)
|
|
.map(|_| item_trait_ref(parent_item_doc, tcx, cdata).def_id)
|
|
}
|
|
_ => None
|
|
}
|
|
}
|
|
|
|
|
|
pub fn get_native_libraries(cdata: Cmd) -> ~[(cstore::NativeLibaryKind, ~str)] {
|
|
let libraries = reader::get_doc(reader::Doc(cdata.data()),
|
|
tag_native_libraries);
|
|
let mut result = ~[];
|
|
reader::tagged_docs(libraries, tag_native_libraries_lib, |lib_doc| {
|
|
let kind_doc = reader::get_doc(lib_doc, tag_native_libraries_kind);
|
|
let name_doc = reader::get_doc(lib_doc, tag_native_libraries_name);
|
|
let kind: cstore::NativeLibaryKind =
|
|
FromPrimitive::from_u32(reader::doc_as_u32(kind_doc)).unwrap();
|
|
let name = name_doc.as_str();
|
|
result.push((kind, name));
|
|
true
|
|
});
|
|
return result;
|
|
}
|
|
|
|
pub fn get_macro_registrar_fn(cdata: Cmd) -> Option<ast::DefId> {
|
|
reader::maybe_get_doc(reader::Doc(cdata.data()), tag_macro_registrar_fn)
|
|
.map(|doc| item_def_id(doc, cdata))
|
|
}
|
|
|
|
pub fn get_exported_macros(cdata: Cmd) -> ~[~str] {
|
|
let macros = reader::get_doc(reader::Doc(cdata.data()),
|
|
tag_exported_macros);
|
|
let mut result = ~[];
|
|
reader::tagged_docs(macros, tag_macro_def, |macro_doc| {
|
|
result.push(macro_doc.as_str());
|
|
true
|
|
});
|
|
result
|
|
}
|