1883 lines
64 KiB
Rust
1883 lines
64 KiB
Rust
// Copyright 2012-2014 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.
|
|
|
|
// Metadata encoding
|
|
|
|
#![allow(unused_must_use)] // everything is just a MemWriter, can't fail
|
|
#![allow(non_camel_case_types)]
|
|
|
|
use back::svh::Svh;
|
|
use driver::config;
|
|
use metadata::common::*;
|
|
use metadata::cstore;
|
|
use metadata::decoder;
|
|
use metadata::tyencode;
|
|
use middle::ty::{node_id_to_type, lookup_item_type};
|
|
use middle::astencode;
|
|
use middle::ty;
|
|
use middle::typeck;
|
|
use middle;
|
|
use util::nodemap::{NodeMap, NodeSet};
|
|
|
|
use serialize::Encodable;
|
|
use std::mem;
|
|
use std::cell::RefCell;
|
|
use std::hash;
|
|
use std::hash::Hash;
|
|
use std::io::MemWriter;
|
|
use std::str;
|
|
use collections::HashMap;
|
|
use syntax::abi;
|
|
use syntax::ast::*;
|
|
use syntax::ast;
|
|
use syntax::ast_map::{PathElem, PathElems};
|
|
use syntax::ast_map;
|
|
use syntax::ast_util::*;
|
|
use syntax::ast_util;
|
|
use syntax::attr::AttrMetaMethods;
|
|
use syntax::attr;
|
|
use syntax::crateid::CrateId;
|
|
use syntax::diagnostic::SpanHandler;
|
|
use syntax::parse::token::InternedString;
|
|
use syntax::parse::token::special_idents;
|
|
use syntax::parse::token;
|
|
use syntax::visit::Visitor;
|
|
use syntax::visit;
|
|
use syntax;
|
|
use writer = serialize::ebml::writer;
|
|
|
|
/// A borrowed version of ast::InlinedItem.
|
|
pub enum InlinedItemRef<'a> {
|
|
IIItemRef(&'a ast::Item),
|
|
IIMethodRef(ast::DefId, bool, &'a ast::Method),
|
|
IIForeignRef(&'a ast::ForeignItem)
|
|
}
|
|
|
|
pub type Encoder<'a> = writer::Encoder<'a, MemWriter>;
|
|
|
|
pub type EncodeInlinedItem<'a> = |ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
ii: InlinedItemRef|: 'a;
|
|
|
|
pub struct EncodeParams<'a> {
|
|
pub diag: &'a SpanHandler,
|
|
pub tcx: &'a ty::ctxt,
|
|
pub reexports2: &'a middle::resolve::ExportMap2,
|
|
pub item_symbols: &'a RefCell<NodeMap<StrBuf>>,
|
|
pub non_inlineable_statics: &'a RefCell<NodeSet>,
|
|
pub link_meta: &'a LinkMeta,
|
|
pub cstore: &'a cstore::CStore,
|
|
pub encode_inlined_item: EncodeInlinedItem<'a>,
|
|
}
|
|
|
|
pub struct EncodeContext<'a> {
|
|
pub diag: &'a SpanHandler,
|
|
pub tcx: &'a ty::ctxt,
|
|
pub reexports2: &'a middle::resolve::ExportMap2,
|
|
pub item_symbols: &'a RefCell<NodeMap<StrBuf>>,
|
|
pub non_inlineable_statics: &'a RefCell<NodeSet>,
|
|
pub link_meta: &'a LinkMeta,
|
|
pub cstore: &'a cstore::CStore,
|
|
pub encode_inlined_item: RefCell<EncodeInlinedItem<'a>>,
|
|
pub type_abbrevs: tyencode::abbrev_map,
|
|
}
|
|
|
|
fn encode_name(ebml_w: &mut Encoder, name: Name) {
|
|
ebml_w.wr_tagged_str(tag_paths_data_name, token::get_name(name).get());
|
|
}
|
|
|
|
fn encode_impl_type_basename(ebml_w: &mut Encoder, name: Ident) {
|
|
ebml_w.wr_tagged_str(tag_item_impl_type_basename, token::get_ident(name).get());
|
|
}
|
|
|
|
pub fn encode_def_id(ebml_w: &mut Encoder, id: DefId) {
|
|
ebml_w.wr_tagged_str(tag_def_id, def_to_str(id).as_slice());
|
|
}
|
|
|
|
#[deriving(Clone)]
|
|
struct entry<T> {
|
|
val: T,
|
|
pos: u64
|
|
}
|
|
|
|
fn encode_trait_ref(ebml_w: &mut Encoder,
|
|
ecx: &EncodeContext,
|
|
trait_ref: &ty::TraitRef,
|
|
tag: uint) {
|
|
let ty_str_ctxt = &tyencode::ctxt {
|
|
diag: ecx.diag,
|
|
ds: def_to_str,
|
|
tcx: ecx.tcx,
|
|
abbrevs: &ecx.type_abbrevs
|
|
};
|
|
|
|
ebml_w.start_tag(tag);
|
|
tyencode::enc_trait_ref(ebml_w.writer, ty_str_ctxt, trait_ref);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_impl_vtables(ebml_w: &mut Encoder,
|
|
ecx: &EncodeContext,
|
|
vtables: &typeck::impl_res) {
|
|
ebml_w.start_tag(tag_item_impl_vtables);
|
|
astencode::encode_vtable_res(ecx, ebml_w, &vtables.trait_vtables);
|
|
astencode::encode_vtable_param_res(ecx, ebml_w, &vtables.self_vtables);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
// Item info table encoding
|
|
fn encode_family(ebml_w: &mut Encoder, c: char) {
|
|
ebml_w.start_tag(tag_items_data_item_family);
|
|
ebml_w.writer.write(&[c as u8]);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
pub fn def_to_str(did: DefId) -> StrBuf {
|
|
format_strbuf!("{}:{}", did.krate, did.node)
|
|
}
|
|
|
|
fn encode_ty_type_param_defs(ebml_w: &mut Encoder,
|
|
ecx: &EncodeContext,
|
|
params: &[ty::TypeParameterDef],
|
|
tag: uint) {
|
|
let ty_str_ctxt = &tyencode::ctxt {
|
|
diag: ecx.diag,
|
|
ds: def_to_str,
|
|
tcx: ecx.tcx,
|
|
abbrevs: &ecx.type_abbrevs
|
|
};
|
|
for param in params.iter() {
|
|
ebml_w.start_tag(tag);
|
|
tyencode::enc_type_param_def(ebml_w.writer, ty_str_ctxt, param);
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
|
|
fn encode_region_param_defs(ebml_w: &mut Encoder,
|
|
params: &[ty::RegionParameterDef]) {
|
|
for param in params.iter() {
|
|
ebml_w.start_tag(tag_region_param_def);
|
|
|
|
ebml_w.start_tag(tag_region_param_def_ident);
|
|
encode_name(ebml_w, param.name);
|
|
ebml_w.end_tag();
|
|
|
|
ebml_w.wr_tagged_str(tag_region_param_def_def_id,
|
|
def_to_str(param.def_id).as_slice());
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
|
|
fn encode_item_variances(ebml_w: &mut Encoder,
|
|
ecx: &EncodeContext,
|
|
id: ast::NodeId) {
|
|
let v = ty::item_variances(ecx.tcx, ast_util::local_def(id));
|
|
ebml_w.start_tag(tag_item_variances);
|
|
v.encode(ebml_w);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_bounds_and_type(ebml_w: &mut Encoder,
|
|
ecx: &EncodeContext,
|
|
tpt: &ty::ty_param_bounds_and_ty) {
|
|
encode_ty_type_param_defs(ebml_w, ecx, tpt.generics.type_param_defs(),
|
|
tag_items_data_item_ty_param_bounds);
|
|
encode_region_param_defs(ebml_w, tpt.generics.region_param_defs());
|
|
encode_type(ecx, ebml_w, tpt.ty);
|
|
}
|
|
|
|
fn encode_variant_id(ebml_w: &mut Encoder, vid: DefId) {
|
|
ebml_w.start_tag(tag_items_data_item_variant);
|
|
let s = def_to_str(vid);
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
pub fn write_type(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
typ: ty::t) {
|
|
let ty_str_ctxt = &tyencode::ctxt {
|
|
diag: ecx.diag,
|
|
ds: def_to_str,
|
|
tcx: ecx.tcx,
|
|
abbrevs: &ecx.type_abbrevs
|
|
};
|
|
tyencode::enc_ty(ebml_w.writer, ty_str_ctxt, typ);
|
|
}
|
|
|
|
fn encode_type(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
typ: ty::t) {
|
|
ebml_w.start_tag(tag_items_data_item_type);
|
|
write_type(ecx, ebml_w, typ);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_method_fty(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
typ: &ty::BareFnTy) {
|
|
ebml_w.start_tag(tag_item_method_fty);
|
|
|
|
let ty_str_ctxt = &tyencode::ctxt {
|
|
diag: ecx.diag,
|
|
ds: def_to_str,
|
|
tcx: ecx.tcx,
|
|
abbrevs: &ecx.type_abbrevs
|
|
};
|
|
tyencode::enc_bare_fn_ty(ebml_w.writer, ty_str_ctxt, typ);
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_symbol(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
id: NodeId) {
|
|
ebml_w.start_tag(tag_items_data_item_symbol);
|
|
match ecx.item_symbols.borrow().find(&id) {
|
|
Some(x) => {
|
|
debug!("encode_symbol(id={:?}, str={})", id, *x);
|
|
ebml_w.writer.write(x.as_bytes());
|
|
}
|
|
None => {
|
|
ecx.diag.handler().bug(
|
|
format!("encode_symbol: id not found {}", id));
|
|
}
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_disr_val(_: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
disr_val: ty::Disr) {
|
|
ebml_w.start_tag(tag_disr_val);
|
|
let s = disr_val.to_str();
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_parent_item(ebml_w: &mut Encoder, id: DefId) {
|
|
ebml_w.start_tag(tag_items_data_parent_item);
|
|
let s = def_to_str(id);
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_struct_fields(ebml_w: &mut Encoder,
|
|
fields: &[ty::field_ty],
|
|
origin: DefId) {
|
|
for f in fields.iter() {
|
|
if f.name == special_idents::unnamed_field.name {
|
|
ebml_w.start_tag(tag_item_unnamed_field);
|
|
} else {
|
|
ebml_w.start_tag(tag_item_field);
|
|
encode_name(ebml_w, f.name);
|
|
}
|
|
encode_struct_field_family(ebml_w, f.vis);
|
|
encode_def_id(ebml_w, f.id);
|
|
ebml_w.start_tag(tag_item_field_origin);
|
|
let s = def_to_str(origin);
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
|
|
fn encode_enum_variant_info(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
id: NodeId,
|
|
variants: &[P<Variant>],
|
|
index: &mut Vec<entry<i64>>,
|
|
generics: &ast::Generics) {
|
|
debug!("encode_enum_variant_info(id={:?})", id);
|
|
|
|
let mut disr_val = 0;
|
|
let mut i = 0;
|
|
let vi = ty::enum_variants(ecx.tcx,
|
|
ast::DefId { krate: LOCAL_CRATE, node: id });
|
|
for variant in variants.iter() {
|
|
let def_id = local_def(variant.node.id);
|
|
index.push(entry {
|
|
val: variant.node.id as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
match variant.node.kind {
|
|
ast::TupleVariantKind(_) => encode_family(ebml_w, 'v'),
|
|
ast::StructVariantKind(_) => encode_family(ebml_w, 'V')
|
|
}
|
|
encode_name(ebml_w, variant.node.name.name);
|
|
encode_parent_item(ebml_w, local_def(id));
|
|
encode_visibility(ebml_w, variant.node.vis);
|
|
encode_attributes(ebml_w, variant.node.attrs.as_slice());
|
|
match variant.node.kind {
|
|
ast::TupleVariantKind(ref args)
|
|
if args.len() > 0 && generics.ty_params.len() == 0 => {
|
|
encode_symbol(ecx, ebml_w, variant.node.id);
|
|
}
|
|
ast::TupleVariantKind(_) => {},
|
|
ast::StructVariantKind(_) => {
|
|
let fields = ty::lookup_struct_fields(ecx.tcx, def_id);
|
|
let idx = encode_info_for_struct(ecx,
|
|
ebml_w,
|
|
fields.as_slice(),
|
|
index);
|
|
encode_struct_fields(ebml_w, fields.as_slice(), def_id);
|
|
encode_index(ebml_w, idx, write_i64);
|
|
}
|
|
}
|
|
if vi.get(i).disr_val != disr_val {
|
|
encode_disr_val(ecx, ebml_w, vi.get(i).disr_val);
|
|
disr_val = vi.get(i).disr_val;
|
|
}
|
|
encode_bounds_and_type(ebml_w, ecx,
|
|
&lookup_item_type(ecx.tcx, def_id));
|
|
|
|
ecx.tcx.map.with_path(variant.node.id, |path| encode_path(ebml_w, path));
|
|
ebml_w.end_tag();
|
|
disr_val += 1;
|
|
i += 1;
|
|
}
|
|
}
|
|
|
|
fn encode_path<PI: Iterator<PathElem> + Clone>(ebml_w: &mut Encoder,
|
|
mut path: PI) {
|
|
ebml_w.start_tag(tag_path);
|
|
ebml_w.wr_tagged_u32(tag_path_len, path.clone().len() as u32);
|
|
for pe in path {
|
|
let tag = match pe {
|
|
ast_map::PathMod(_) => tag_path_elem_mod,
|
|
ast_map::PathName(_) => tag_path_elem_name
|
|
};
|
|
ebml_w.wr_tagged_str(tag, token::get_name(pe.name()).get());
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_reexported_static_method(ebml_w: &mut Encoder,
|
|
exp: &middle::resolve::Export2,
|
|
method_def_id: DefId,
|
|
method_ident: Ident) {
|
|
debug!("(encode reexported static method) {}::{}",
|
|
exp.name, token::get_ident(method_ident));
|
|
ebml_w.start_tag(tag_items_data_item_reexport);
|
|
ebml_w.start_tag(tag_items_data_item_reexport_def_id);
|
|
ebml_w.wr_str(def_to_str(method_def_id).as_slice());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_items_data_item_reexport_name);
|
|
ebml_w.wr_str(format!("{}::{}",
|
|
exp.name,
|
|
token::get_ident(method_ident)));
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_reexported_static_base_methods(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
exp: &middle::resolve::Export2)
|
|
-> bool {
|
|
let impl_methods = ecx.tcx.impl_methods.borrow();
|
|
match ecx.tcx.inherent_impls.borrow().find(&exp.def_id) {
|
|
Some(implementations) => {
|
|
for base_impl_did in implementations.borrow().iter() {
|
|
for &method_did in impl_methods.get(base_impl_did).iter() {
|
|
let m = ty::method(ecx.tcx, method_did);
|
|
if m.explicit_self == ast::SelfStatic {
|
|
encode_reexported_static_method(ebml_w, exp, m.def_id, m.ident);
|
|
}
|
|
}
|
|
}
|
|
|
|
true
|
|
}
|
|
None => { false }
|
|
}
|
|
}
|
|
|
|
fn encode_reexported_static_trait_methods(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
exp: &middle::resolve::Export2)
|
|
-> bool {
|
|
match ecx.tcx.trait_methods_cache.borrow().find(&exp.def_id) {
|
|
Some(methods) => {
|
|
for m in methods.iter() {
|
|
if m.explicit_self == ast::SelfStatic {
|
|
encode_reexported_static_method(ebml_w, exp, m.def_id, m.ident);
|
|
}
|
|
}
|
|
|
|
true
|
|
}
|
|
None => { false }
|
|
}
|
|
}
|
|
|
|
fn encode_reexported_static_methods(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
mod_path: PathElems,
|
|
exp: &middle::resolve::Export2) {
|
|
match ecx.tcx.map.find(exp.def_id.node) {
|
|
Some(ast_map::NodeItem(item)) => {
|
|
let original_name = token::get_ident(item.ident);
|
|
|
|
let path_differs = ecx.tcx.map.with_path(exp.def_id.node, |path| {
|
|
let (mut a, mut b) = (path, mod_path.clone());
|
|
loop {
|
|
match (a.next(), b.next()) {
|
|
(None, None) => return true,
|
|
(None, _) | (_, None) => return false,
|
|
(Some(x), Some(y)) => if x != y { return false },
|
|
}
|
|
}
|
|
});
|
|
|
|
//
|
|
// We don't need to reexport static methods on items
|
|
// declared in the same module as our `pub use ...` since
|
|
// that's done when we encode the item itself.
|
|
//
|
|
// The only exception is when the reexport *changes* the
|
|
// name e.g. `pub use Foo = self::Bar` -- we have
|
|
// encoded metadata for static methods relative to Bar,
|
|
// but not yet for Foo.
|
|
//
|
|
if path_differs || original_name.get() != exp.name.as_slice() {
|
|
if !encode_reexported_static_base_methods(ecx, ebml_w, exp) {
|
|
if encode_reexported_static_trait_methods(ecx, ebml_w, exp) {
|
|
debug!("(encode reexported static methods) {} \
|
|
[trait]",
|
|
original_name);
|
|
}
|
|
}
|
|
else {
|
|
debug!("(encode reexported static methods) {} [base]",
|
|
original_name);
|
|
}
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
/// Iterates through "auxiliary node IDs", which are node IDs that describe
|
|
/// top-level items that are sub-items of the given item. Specifically:
|
|
///
|
|
/// * For enums, iterates through the node IDs of the variants.
|
|
///
|
|
/// * For newtype structs, iterates through the node ID of the constructor.
|
|
fn each_auxiliary_node_id(item: @Item, callback: |NodeId| -> bool) -> bool {
|
|
let mut continue_ = true;
|
|
match item.node {
|
|
ItemEnum(ref enum_def, _) => {
|
|
for variant in enum_def.variants.iter() {
|
|
continue_ = callback(variant.node.id);
|
|
if !continue_ {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
ItemStruct(struct_def, _) => {
|
|
// If this is a newtype struct, return the constructor.
|
|
match struct_def.ctor_id {
|
|
Some(ctor_id) if struct_def.fields.len() > 0 &&
|
|
struct_def.fields.get(0).node.kind.is_unnamed() => {
|
|
continue_ = callback(ctor_id);
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
|
|
continue_
|
|
}
|
|
|
|
fn encode_reexports(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
id: NodeId,
|
|
path: PathElems) {
|
|
debug!("(encoding info for module) encoding reexports for {}", id);
|
|
match ecx.reexports2.borrow().find(&id) {
|
|
Some(ref exports) => {
|
|
debug!("(encoding info for module) found reexports for {}", id);
|
|
for exp in exports.iter() {
|
|
debug!("(encoding info for module) reexport '{}' ({}/{}) for \
|
|
{}",
|
|
exp.name,
|
|
exp.def_id.krate,
|
|
exp.def_id.node,
|
|
id);
|
|
ebml_w.start_tag(tag_items_data_item_reexport);
|
|
ebml_w.start_tag(tag_items_data_item_reexport_def_id);
|
|
ebml_w.wr_str(def_to_str(exp.def_id).as_slice());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_items_data_item_reexport_name);
|
|
ebml_w.wr_str(exp.name.as_slice());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
encode_reexported_static_methods(ecx, ebml_w, path.clone(), exp);
|
|
}
|
|
}
|
|
None => {
|
|
debug!("(encoding info for module) found no reexports for {}",
|
|
id);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_mod(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
md: &Mod,
|
|
id: NodeId,
|
|
path: PathElems,
|
|
name: Ident,
|
|
vis: Visibility) {
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, local_def(id));
|
|
encode_family(ebml_w, 'm');
|
|
encode_name(ebml_w, name.name);
|
|
debug!("(encoding info for module) encoding info for module ID {}", id);
|
|
|
|
// Encode info about all the module children.
|
|
for item in md.items.iter() {
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(local_def(item.id)).as_slice());
|
|
ebml_w.end_tag();
|
|
|
|
each_auxiliary_node_id(*item, |auxiliary_node_id| {
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(local_def(
|
|
auxiliary_node_id)).as_slice());
|
|
ebml_w.end_tag();
|
|
true
|
|
});
|
|
|
|
match item.node {
|
|
ItemImpl(..) => {
|
|
let (ident, did) = (item.ident, item.id);
|
|
debug!("(encoding info for module) ... encoding impl {} \
|
|
({:?}/{:?})",
|
|
token::get_ident(ident),
|
|
did, ecx.tcx.map.node_to_str(did));
|
|
|
|
ebml_w.start_tag(tag_mod_impl);
|
|
ebml_w.wr_str(def_to_str(local_def(did)).as_slice());
|
|
ebml_w.end_tag();
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
encode_path(ebml_w, path.clone());
|
|
encode_visibility(ebml_w, vis);
|
|
|
|
// Encode the reexports of this module, if this module is public.
|
|
if vis == Public {
|
|
debug!("(encoding info for module) encoding reexports for {}", id);
|
|
encode_reexports(ecx, ebml_w, id, path);
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_struct_field_family(ebml_w: &mut Encoder,
|
|
visibility: Visibility) {
|
|
encode_family(ebml_w, match visibility {
|
|
Public => 'g',
|
|
Inherited => 'N'
|
|
});
|
|
}
|
|
|
|
fn encode_visibility(ebml_w: &mut Encoder, visibility: Visibility) {
|
|
ebml_w.start_tag(tag_items_data_item_visibility);
|
|
let ch = match visibility {
|
|
Public => 'y',
|
|
Inherited => 'i',
|
|
};
|
|
ebml_w.wr_str(str::from_char(ch));
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_explicit_self(ebml_w: &mut Encoder, explicit_self: ast::ExplicitSelf_) {
|
|
ebml_w.start_tag(tag_item_trait_method_explicit_self);
|
|
|
|
// Encode the base self type.
|
|
match explicit_self {
|
|
SelfStatic => { ebml_w.writer.write(&[ 's' as u8 ]); }
|
|
SelfValue => { ebml_w.writer.write(&[ 'v' as u8 ]); }
|
|
SelfUniq => { ebml_w.writer.write(&[ '~' as u8 ]); }
|
|
SelfRegion(_, m) => {
|
|
// FIXME(#4846) encode custom lifetime
|
|
ebml_w.writer.write(&['&' as u8]);
|
|
encode_mutability(ebml_w, m);
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
|
|
fn encode_mutability(ebml_w: &mut Encoder,
|
|
m: ast::Mutability) {
|
|
match m {
|
|
MutImmutable => { ebml_w.writer.write(&[ 'i' as u8 ]); }
|
|
MutMutable => { ebml_w.writer.write(&[ 'm' as u8 ]); }
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_method_sort(ebml_w: &mut Encoder, sort: char) {
|
|
ebml_w.start_tag(tag_item_trait_method_sort);
|
|
ebml_w.writer.write(&[ sort as u8 ]);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_provided_source(ebml_w: &mut Encoder,
|
|
source_opt: Option<DefId>) {
|
|
for source in source_opt.iter() {
|
|
ebml_w.start_tag(tag_item_method_provided_source);
|
|
let s = def_to_str(*source);
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
|
|
/* Returns an index of items in this class */
|
|
fn encode_info_for_struct(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
fields: &[ty::field_ty],
|
|
global_index: &mut Vec<entry<i64>>)
|
|
-> Vec<entry<i64>> {
|
|
/* Each class has its own index, since different classes
|
|
may have fields with the same name */
|
|
let mut index = Vec::new();
|
|
let tcx = ecx.tcx;
|
|
/* We encode both private and public fields -- need to include
|
|
private fields to get the offsets right */
|
|
for field in fields.iter() {
|
|
let nm = field.name;
|
|
let id = field.id.node;
|
|
|
|
index.push(entry {val: id as i64, pos: ebml_w.writer.tell().unwrap()});
|
|
global_index.push(entry {
|
|
val: id as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
debug!("encode_info_for_struct: doing {} {}",
|
|
token::get_name(nm), id);
|
|
encode_struct_field_family(ebml_w, field.vis);
|
|
encode_name(ebml_w, nm);
|
|
encode_type(ecx, ebml_w, node_id_to_type(tcx, id));
|
|
encode_def_id(ebml_w, local_def(id));
|
|
ebml_w.end_tag();
|
|
}
|
|
index
|
|
}
|
|
|
|
fn encode_info_for_struct_ctor(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
name: ast::Ident,
|
|
ctor_id: NodeId,
|
|
index: &mut Vec<entry<i64>>,
|
|
struct_id: NodeId) {
|
|
index.push(entry {
|
|
val: ctor_id as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, local_def(ctor_id));
|
|
encode_family(ebml_w, 'f');
|
|
encode_bounds_and_type(ebml_w, ecx,
|
|
&lookup_item_type(ecx.tcx, local_def(ctor_id)));
|
|
encode_name(ebml_w, name.name);
|
|
encode_type(ecx, ebml_w, node_id_to_type(ecx.tcx, ctor_id));
|
|
ecx.tcx.map.with_path(ctor_id, |path| encode_path(ebml_w, path));
|
|
encode_parent_item(ebml_w, local_def(struct_id));
|
|
|
|
if ecx.item_symbols.borrow().contains_key(&ctor_id) {
|
|
encode_symbol(ecx, ebml_w, ctor_id);
|
|
}
|
|
|
|
// indicate that this is a tuple struct ctor, because downstream users will normally want
|
|
// the tuple struct definition, but without this there is no way for them to tell that
|
|
// they actually have a ctor rather than a normal function
|
|
ebml_w.start_tag(tag_items_data_item_is_tuple_struct_ctor);
|
|
ebml_w.end_tag();
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_method_ty_fields(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
method_ty: &ty::Method) {
|
|
encode_def_id(ebml_w, method_ty.def_id);
|
|
encode_name(ebml_w, method_ty.ident.name);
|
|
encode_ty_type_param_defs(ebml_w, ecx,
|
|
method_ty.generics.type_param_defs(),
|
|
tag_item_method_tps);
|
|
encode_method_fty(ecx, ebml_w, &method_ty.fty);
|
|
encode_visibility(ebml_w, method_ty.vis);
|
|
encode_explicit_self(ebml_w, method_ty.explicit_self);
|
|
let fn_style = method_ty.fty.fn_style;
|
|
match method_ty.explicit_self {
|
|
ast::SelfStatic => {
|
|
encode_family(ebml_w, fn_style_static_method_family(fn_style));
|
|
}
|
|
_ => encode_family(ebml_w, style_fn_family(fn_style))
|
|
}
|
|
encode_provided_source(ebml_w, method_ty.provided_source);
|
|
}
|
|
|
|
fn encode_info_for_method(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
m: &ty::Method,
|
|
impl_path: PathElems,
|
|
is_default_impl: bool,
|
|
parent_id: NodeId,
|
|
ast_method_opt: Option<@Method>) {
|
|
|
|
debug!("encode_info_for_method: {:?} {}", m.def_id,
|
|
token::get_ident(m.ident));
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
|
|
encode_method_ty_fields(ecx, ebml_w, m);
|
|
encode_parent_item(ebml_w, local_def(parent_id));
|
|
|
|
// The type for methods gets encoded twice, which is unfortunate.
|
|
let tpt = lookup_item_type(ecx.tcx, m.def_id);
|
|
encode_bounds_and_type(ebml_w, ecx, &tpt);
|
|
|
|
let elem = ast_map::PathName(m.ident.name);
|
|
encode_path(ebml_w, impl_path.chain(Some(elem).move_iter()));
|
|
match ast_method_opt {
|
|
Some(ast_method) => {
|
|
encode_attributes(ebml_w, ast_method.attrs.as_slice())
|
|
}
|
|
None => ()
|
|
}
|
|
|
|
for &ast_method in ast_method_opt.iter() {
|
|
let num_params = tpt.generics.type_param_defs().len();
|
|
if num_params > 0u ||
|
|
is_default_impl ||
|
|
should_inline(ast_method.attrs.as_slice()) {
|
|
encode_inlined_item(ecx, ebml_w,
|
|
IIMethodRef(local_def(parent_id), false, ast_method));
|
|
} else {
|
|
encode_symbol(ecx, ebml_w, m.def_id.node);
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_inlined_item(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
ii: InlinedItemRef) {
|
|
let mut eii = ecx.encode_inlined_item.borrow_mut();
|
|
let eii: &mut EncodeInlinedItem = &mut *eii;
|
|
(*eii)(ecx, ebml_w, ii)
|
|
}
|
|
|
|
fn style_fn_family(s: FnStyle) -> char {
|
|
match s {
|
|
UnsafeFn => 'u',
|
|
NormalFn => 'f',
|
|
}
|
|
}
|
|
|
|
fn fn_style_static_method_family(s: FnStyle) -> char {
|
|
match s {
|
|
UnsafeFn => 'U',
|
|
NormalFn => 'F',
|
|
}
|
|
}
|
|
|
|
|
|
fn should_inline(attrs: &[Attribute]) -> bool {
|
|
use syntax::attr::*;
|
|
match find_inline_attr(attrs) {
|
|
InlineNone | InlineNever => false,
|
|
InlineHint | InlineAlways => true
|
|
}
|
|
}
|
|
|
|
// Encodes the inherent implementations of a structure, enumeration, or trait.
|
|
fn encode_inherent_implementations(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
def_id: DefId) {
|
|
match ecx.tcx.inherent_impls.borrow().find(&def_id) {
|
|
None => {}
|
|
Some(implementations) => {
|
|
for &impl_def_id in implementations.borrow().iter() {
|
|
ebml_w.start_tag(tag_items_data_item_inherent_impl);
|
|
encode_def_id(ebml_w, impl_def_id);
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Encodes the implementations of a trait defined in this crate.
|
|
fn encode_extension_implementations(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
trait_def_id: DefId) {
|
|
match ecx.tcx.trait_impls.borrow().find(&trait_def_id) {
|
|
None => {}
|
|
Some(implementations) => {
|
|
for &impl_def_id in implementations.borrow().iter() {
|
|
ebml_w.start_tag(tag_items_data_item_extension_impl);
|
|
encode_def_id(ebml_w, impl_def_id);
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_sized(ebml_w: &mut Encoder, sized: Sized) {
|
|
ebml_w.start_tag(tag_items_data_item_sized);
|
|
let ch = match sized {
|
|
DynSize => 'd',
|
|
StaticSize => 's',
|
|
};
|
|
ebml_w.wr_str(str::from_char(ch));
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_info_for_item(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
item: &Item,
|
|
index: &mut Vec<entry<i64>>,
|
|
path: PathElems,
|
|
vis: ast::Visibility) {
|
|
let tcx = ecx.tcx;
|
|
|
|
fn add_to_index(item: &Item, ebml_w: &Encoder,
|
|
index: &mut Vec<entry<i64>>) {
|
|
index.push(entry {
|
|
val: item.id as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
}
|
|
|
|
debug!("encoding info for item at {}",
|
|
ecx.tcx.sess.codemap().span_to_str(item.span));
|
|
|
|
let def_id = local_def(item.id);
|
|
match item.node {
|
|
ItemStatic(_, m, _) => {
|
|
add_to_index(item, ebml_w, index);
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
if m == ast::MutMutable {
|
|
encode_family(ebml_w, 'b');
|
|
} else {
|
|
encode_family(ebml_w, 'c');
|
|
}
|
|
encode_type(ecx, ebml_w, node_id_to_type(tcx, item.id));
|
|
encode_symbol(ecx, ebml_w, item.id);
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_path(ebml_w, path);
|
|
|
|
let inlineable = !ecx.non_inlineable_statics.borrow().contains(&item.id);
|
|
|
|
if inlineable {
|
|
encode_inlined_item(ecx, ebml_w, IIItemRef(item));
|
|
}
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
ItemFn(_, fn_style, _, ref generics, _) => {
|
|
add_to_index(item, ebml_w, index);
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, style_fn_family(fn_style));
|
|
let tps_len = generics.ty_params.len();
|
|
encode_bounds_and_type(ebml_w, ecx, &lookup_item_type(tcx, def_id));
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_path(ebml_w, path);
|
|
encode_attributes(ebml_w, item.attrs.as_slice());
|
|
if tps_len > 0u || should_inline(item.attrs.as_slice()) {
|
|
encode_inlined_item(ecx, ebml_w, IIItemRef(item));
|
|
} else {
|
|
encode_symbol(ecx, ebml_w, item.id);
|
|
}
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
ItemMod(ref m) => {
|
|
add_to_index(item, ebml_w, index);
|
|
encode_info_for_mod(ecx,
|
|
ebml_w,
|
|
m,
|
|
item.id,
|
|
path,
|
|
item.ident,
|
|
item.vis);
|
|
}
|
|
ItemForeignMod(ref fm) => {
|
|
add_to_index(item, ebml_w, index);
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 'n');
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_path(ebml_w, path);
|
|
|
|
// Encode all the items in this module.
|
|
for foreign_item in fm.items.iter() {
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(local_def(foreign_item.id)).as_slice());
|
|
ebml_w.end_tag();
|
|
}
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
ItemTy(..) => {
|
|
add_to_index(item, ebml_w, index);
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 'y');
|
|
encode_bounds_and_type(ebml_w, ecx, &lookup_item_type(tcx, def_id));
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_path(ebml_w, path);
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
ItemEnum(ref enum_definition, ref generics) => {
|
|
add_to_index(item, ebml_w, index);
|
|
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 't');
|
|
encode_item_variances(ebml_w, ecx, item.id);
|
|
encode_bounds_and_type(ebml_w, ecx, &lookup_item_type(tcx, def_id));
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_attributes(ebml_w, item.attrs.as_slice());
|
|
for v in (*enum_definition).variants.iter() {
|
|
encode_variant_id(ebml_w, local_def(v.node.id));
|
|
}
|
|
encode_inlined_item(ecx, ebml_w, IIItemRef(item));
|
|
encode_path(ebml_w, path);
|
|
|
|
// Encode inherent implementations for this enumeration.
|
|
encode_inherent_implementations(ecx, ebml_w, def_id);
|
|
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
|
|
encode_enum_variant_info(ecx,
|
|
ebml_w,
|
|
item.id,
|
|
(*enum_definition).variants.as_slice(),
|
|
index,
|
|
generics);
|
|
}
|
|
ItemStruct(struct_def, _) => {
|
|
let fields = ty::lookup_struct_fields(tcx, def_id);
|
|
|
|
/* First, encode the fields
|
|
These come first because we need to write them to make
|
|
the index, and the index needs to be in the item for the
|
|
class itself */
|
|
let idx = encode_info_for_struct(ecx,
|
|
ebml_w,
|
|
fields.as_slice(),
|
|
index);
|
|
|
|
/* Index the class*/
|
|
add_to_index(item, ebml_w, index);
|
|
|
|
/* Now, make an item for the class itself */
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 'S');
|
|
encode_bounds_and_type(ebml_w, ecx, &lookup_item_type(tcx, def_id));
|
|
|
|
encode_item_variances(ebml_w, ecx, item.id);
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_attributes(ebml_w, item.attrs.as_slice());
|
|
encode_path(ebml_w, path.clone());
|
|
encode_visibility(ebml_w, vis);
|
|
|
|
/* Encode def_ids for each field and method
|
|
for methods, write all the stuff get_trait_method
|
|
needs to know*/
|
|
encode_struct_fields(ebml_w, fields.as_slice(), def_id);
|
|
|
|
encode_inlined_item(ecx, ebml_w, IIItemRef(item));
|
|
|
|
// Encode inherent implementations for this structure.
|
|
encode_inherent_implementations(ecx, ebml_w, def_id);
|
|
|
|
/* Each class has its own index -- encode it */
|
|
encode_index(ebml_w, idx, write_i64);
|
|
ebml_w.end_tag();
|
|
|
|
// If this is a tuple-like struct, encode the type of the constructor.
|
|
match struct_def.ctor_id {
|
|
Some(ctor_id) => {
|
|
encode_info_for_struct_ctor(ecx, ebml_w, item.ident,
|
|
ctor_id, index, def_id.node);
|
|
}
|
|
None => {}
|
|
}
|
|
}
|
|
ItemImpl(_, ref opt_trait, ty, ref ast_methods) => {
|
|
// We need to encode information about the default methods we
|
|
// have inherited, so we drive this based on the impl structure.
|
|
let impl_methods = tcx.impl_methods.borrow();
|
|
let methods = impl_methods.get(&def_id);
|
|
|
|
add_to_index(item, ebml_w, index);
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 'i');
|
|
encode_bounds_and_type(ebml_w, ecx, &lookup_item_type(tcx, def_id));
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_attributes(ebml_w, item.attrs.as_slice());
|
|
match ty.node {
|
|
ast::TyPath(ref path, ref bounds, _) if path.segments
|
|
.len() == 1 => {
|
|
assert!(bounds.is_none());
|
|
encode_impl_type_basename(ebml_w, ast_util::path_to_ident(path));
|
|
}
|
|
_ => {}
|
|
}
|
|
for &method_def_id in methods.iter() {
|
|
ebml_w.start_tag(tag_item_impl_method);
|
|
let s = def_to_str(method_def_id);
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
for ast_trait_ref in opt_trait.iter() {
|
|
let trait_ref = ty::node_id_to_trait_ref(
|
|
tcx, ast_trait_ref.ref_id);
|
|
encode_trait_ref(ebml_w, ecx, &*trait_ref, tag_item_trait_ref);
|
|
let impl_vtables = ty::lookup_impl_vtables(tcx, def_id);
|
|
encode_impl_vtables(ebml_w, ecx, &impl_vtables);
|
|
}
|
|
encode_path(ebml_w, path.clone());
|
|
ebml_w.end_tag();
|
|
|
|
// Iterate down the methods, emitting them. We rely on the
|
|
// assumption that all of the actually implemented methods
|
|
// appear first in the impl structure, in the same order they do
|
|
// in the ast. This is a little sketchy.
|
|
let num_implemented_methods = ast_methods.len();
|
|
for (i, &method_def_id) in methods.iter().enumerate() {
|
|
let ast_method = if i < num_implemented_methods {
|
|
Some(*ast_methods.get(i))
|
|
} else { None };
|
|
|
|
index.push(entry {
|
|
val: method_def_id.node as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
encode_info_for_method(ecx,
|
|
ebml_w,
|
|
&*ty::method(tcx, method_def_id),
|
|
path.clone(),
|
|
false,
|
|
item.id,
|
|
ast_method)
|
|
}
|
|
}
|
|
ItemTrait(_, sized, ref super_traits, ref ms) => {
|
|
add_to_index(item, ebml_w, index);
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 'I');
|
|
encode_item_variances(ebml_w, ecx, item.id);
|
|
let trait_def = ty::lookup_trait_def(tcx, def_id);
|
|
encode_ty_type_param_defs(ebml_w, ecx,
|
|
trait_def.generics.type_param_defs(),
|
|
tag_items_data_item_ty_param_bounds);
|
|
encode_region_param_defs(ebml_w, trait_def.generics.region_param_defs());
|
|
encode_trait_ref(ebml_w, ecx, &*trait_def.trait_ref, tag_item_trait_ref);
|
|
encode_name(ebml_w, item.ident.name);
|
|
encode_attributes(ebml_w, item.attrs.as_slice());
|
|
// When we fix the rest of the supertrait nastiness (FIXME(#8559)), we
|
|
// should no longer need this ugly little hack either.
|
|
encode_sized(ebml_w, sized);
|
|
encode_visibility(ebml_w, vis);
|
|
for &method_def_id in ty::trait_method_def_ids(tcx, def_id).iter() {
|
|
ebml_w.start_tag(tag_item_trait_method);
|
|
encode_def_id(ebml_w, method_def_id);
|
|
ebml_w.end_tag();
|
|
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(method_def_id).as_slice());
|
|
ebml_w.end_tag();
|
|
}
|
|
encode_path(ebml_w, path.clone());
|
|
// FIXME(#8559): This should use the tcx's supertrait cache instead of
|
|
// reading the AST's list, because the former has already filtered out
|
|
// the builtin-kinds-as-supertraits. See corresponding fixme in decoder.
|
|
for ast_trait_ref in super_traits.iter() {
|
|
let trait_ref = ty::node_id_to_trait_ref(ecx.tcx, ast_trait_ref.ref_id);
|
|
encode_trait_ref(ebml_w, ecx, &*trait_ref, tag_item_super_trait_ref);
|
|
}
|
|
|
|
// Encode the implementations of this trait.
|
|
encode_extension_implementations(ecx, ebml_w, def_id);
|
|
|
|
ebml_w.end_tag();
|
|
|
|
// Now output the method info for each method.
|
|
let r = ty::trait_method_def_ids(tcx, def_id);
|
|
for (i, &method_def_id) in r.iter().enumerate() {
|
|
assert_eq!(method_def_id.krate, ast::LOCAL_CRATE);
|
|
|
|
let method_ty = ty::method(tcx, method_def_id);
|
|
|
|
index.push(entry {
|
|
val: method_def_id.node as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
|
|
encode_method_ty_fields(ecx, ebml_w, &*method_ty);
|
|
|
|
encode_parent_item(ebml_w, def_id);
|
|
|
|
let elem = ast_map::PathName(method_ty.ident.name);
|
|
encode_path(ebml_w, path.clone().chain(Some(elem).move_iter()));
|
|
|
|
match method_ty.explicit_self {
|
|
SelfStatic => {
|
|
encode_family(ebml_w,
|
|
fn_style_static_method_family(
|
|
method_ty.fty.fn_style));
|
|
|
|
let tpt = ty::lookup_item_type(tcx, method_def_id);
|
|
encode_bounds_and_type(ebml_w, ecx, &tpt);
|
|
}
|
|
|
|
_ => {
|
|
encode_family(ebml_w,
|
|
style_fn_family(
|
|
method_ty.fty.fn_style));
|
|
}
|
|
}
|
|
|
|
match ms.get(i) {
|
|
&Required(ref tm) => {
|
|
encode_attributes(ebml_w, tm.attrs.as_slice());
|
|
encode_method_sort(ebml_w, 'r');
|
|
}
|
|
|
|
&Provided(m) => {
|
|
encode_attributes(ebml_w, m.attrs.as_slice());
|
|
// If this is a static method, we've already encoded
|
|
// this.
|
|
if method_ty.explicit_self != SelfStatic {
|
|
// FIXME: I feel like there is something funny going on.
|
|
let tpt = ty::lookup_item_type(tcx, method_def_id);
|
|
encode_bounds_and_type(ebml_w, ecx, &tpt);
|
|
}
|
|
encode_method_sort(ebml_w, 'p');
|
|
encode_inlined_item(ecx, ebml_w,
|
|
IIMethodRef(def_id, true, m));
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
// Encode inherent implementations for this trait.
|
|
encode_inherent_implementations(ecx, ebml_w, def_id);
|
|
}
|
|
ItemMac(..) => {
|
|
// macros are encoded separately
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_foreign_item(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
nitem: &ForeignItem,
|
|
index: &mut Vec<entry<i64>>,
|
|
path: PathElems,
|
|
abi: abi::Abi) {
|
|
index.push(entry {
|
|
val: nitem.id as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, local_def(nitem.id));
|
|
match nitem.node {
|
|
ForeignItemFn(..) => {
|
|
encode_family(ebml_w, style_fn_family(NormalFn));
|
|
encode_bounds_and_type(ebml_w, ecx,
|
|
&lookup_item_type(ecx.tcx,local_def(nitem.id)));
|
|
encode_name(ebml_w, nitem.ident.name);
|
|
if abi == abi::RustIntrinsic {
|
|
encode_inlined_item(ecx, ebml_w, IIForeignRef(nitem));
|
|
} else {
|
|
encode_symbol(ecx, ebml_w, nitem.id);
|
|
}
|
|
}
|
|
ForeignItemStatic(_, mutbl) => {
|
|
if mutbl {
|
|
encode_family(ebml_w, 'b');
|
|
} else {
|
|
encode_family(ebml_w, 'c');
|
|
}
|
|
encode_type(ecx, ebml_w, node_id_to_type(ecx.tcx, nitem.id));
|
|
encode_symbol(ecx, ebml_w, nitem.id);
|
|
encode_name(ebml_w, nitem.ident.name);
|
|
}
|
|
}
|
|
encode_path(ebml_w, path);
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn my_visit_expr(_e: &Expr) { }
|
|
|
|
fn my_visit_item(i: &Item,
|
|
ebml_w: &mut Encoder,
|
|
ecx_ptr: *int,
|
|
index: &mut Vec<entry<i64>>) {
|
|
let mut ebml_w = unsafe { ebml_w.unsafe_clone() };
|
|
// See above
|
|
let ecx: &EncodeContext = unsafe { mem::transmute(ecx_ptr) };
|
|
ecx.tcx.map.with_path(i.id, |path| {
|
|
encode_info_for_item(ecx, &mut ebml_w, i, index, path, i.vis);
|
|
});
|
|
}
|
|
|
|
fn my_visit_foreign_item(ni: &ForeignItem,
|
|
ebml_w: &mut Encoder,
|
|
ecx_ptr:*int,
|
|
index: &mut Vec<entry<i64>>) {
|
|
// See above
|
|
let ecx: &EncodeContext = unsafe { mem::transmute(ecx_ptr) };
|
|
debug!("writing foreign item {}::{}",
|
|
ecx.tcx.map.path_to_str(ni.id),
|
|
token::get_ident(ni.ident));
|
|
|
|
let mut ebml_w = unsafe {
|
|
ebml_w.unsafe_clone()
|
|
};
|
|
let abi = ecx.tcx.map.get_foreign_abi(ni.id);
|
|
ecx.tcx.map.with_path(ni.id, |path| {
|
|
encode_info_for_foreign_item(ecx, &mut ebml_w,
|
|
ni, index,
|
|
path, abi);
|
|
});
|
|
}
|
|
|
|
struct EncodeVisitor<'a,'b> {
|
|
ebml_w_for_visit_item: &'a mut Encoder<'b>,
|
|
ecx_ptr:*int,
|
|
index: &'a mut Vec<entry<i64>>,
|
|
}
|
|
|
|
impl<'a,'b> visit::Visitor<()> for EncodeVisitor<'a,'b> {
|
|
fn visit_expr(&mut self, ex: &Expr, _: ()) {
|
|
visit::walk_expr(self, ex, ());
|
|
my_visit_expr(ex);
|
|
}
|
|
fn visit_item(&mut self, i: &Item, _: ()) {
|
|
visit::walk_item(self, i, ());
|
|
my_visit_item(i,
|
|
self.ebml_w_for_visit_item,
|
|
self.ecx_ptr,
|
|
self.index);
|
|
}
|
|
fn visit_foreign_item(&mut self, ni: &ForeignItem, _: ()) {
|
|
visit::walk_foreign_item(self, ni, ());
|
|
my_visit_foreign_item(ni,
|
|
self.ebml_w_for_visit_item,
|
|
self.ecx_ptr,
|
|
self.index);
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_items(ecx: &EncodeContext,
|
|
ebml_w: &mut Encoder,
|
|
krate: &Crate)
|
|
-> Vec<entry<i64>> {
|
|
let mut index = Vec::new();
|
|
ebml_w.start_tag(tag_items_data);
|
|
index.push(entry {
|
|
val: CRATE_NODE_ID as i64,
|
|
pos: ebml_w.writer.tell().unwrap(),
|
|
});
|
|
encode_info_for_mod(ecx,
|
|
ebml_w,
|
|
&krate.module,
|
|
CRATE_NODE_ID,
|
|
ast_map::Values([].iter()).chain(None),
|
|
syntax::parse::token::special_idents::invalid,
|
|
Public);
|
|
|
|
// See comment in `encode_side_tables_for_ii` in astencode
|
|
let ecx_ptr: *int = unsafe { mem::transmute(ecx) };
|
|
visit::walk_crate(&mut EncodeVisitor {
|
|
index: &mut index,
|
|
ecx_ptr: ecx_ptr,
|
|
ebml_w_for_visit_item: &mut *ebml_w,
|
|
}, krate, ());
|
|
|
|
ebml_w.end_tag();
|
|
index
|
|
}
|
|
|
|
|
|
// Path and definition ID indexing
|
|
|
|
fn encode_index<T: Hash>(ebml_w: &mut Encoder, index: Vec<entry<T>>,
|
|
write_fn: |&mut MemWriter, &T|) {
|
|
let mut buckets: Vec<Vec<entry<T>>> = Vec::from_fn(256, |_| Vec::new());
|
|
for elt in index.move_iter() {
|
|
let h = hash::hash(&elt.val) as uint;
|
|
buckets.get_mut(h % 256).push(elt);
|
|
}
|
|
|
|
ebml_w.start_tag(tag_index);
|
|
let mut bucket_locs = Vec::new();
|
|
ebml_w.start_tag(tag_index_buckets);
|
|
for bucket in buckets.iter() {
|
|
bucket_locs.push(ebml_w.writer.tell().unwrap());
|
|
ebml_w.start_tag(tag_index_buckets_bucket);
|
|
for elt in bucket.iter() {
|
|
ebml_w.start_tag(tag_index_buckets_bucket_elt);
|
|
assert!(elt.pos < 0xffff_ffff);
|
|
{
|
|
let wr: &mut MemWriter = ebml_w.writer;
|
|
wr.write_be_u32(elt.pos as u32);
|
|
}
|
|
write_fn(ebml_w.writer, &elt.val);
|
|
ebml_w.end_tag();
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_index_table);
|
|
for pos in bucket_locs.iter() {
|
|
assert!(*pos < 0xffff_ffff);
|
|
let wr: &mut MemWriter = ebml_w.writer;
|
|
wr.write_be_u32(*pos as u32);
|
|
}
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn write_i64(writer: &mut MemWriter, &n: &i64) {
|
|
let wr: &mut MemWriter = writer;
|
|
assert!(n < 0x7fff_ffff);
|
|
wr.write_be_u32(n as u32);
|
|
}
|
|
|
|
fn encode_meta_item(ebml_w: &mut Encoder, mi: @MetaItem) {
|
|
match mi.node {
|
|
MetaWord(ref name) => {
|
|
ebml_w.start_tag(tag_meta_item_word);
|
|
ebml_w.start_tag(tag_meta_item_name);
|
|
ebml_w.writer.write(name.get().as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
MetaNameValue(ref name, ref value) => {
|
|
match value.node {
|
|
LitStr(ref value, _) => {
|
|
ebml_w.start_tag(tag_meta_item_name_value);
|
|
ebml_w.start_tag(tag_meta_item_name);
|
|
ebml_w.writer.write(name.get().as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_meta_item_value);
|
|
ebml_w.writer.write(value.get().as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
_ => {/* FIXME (#623): encode other variants */ }
|
|
}
|
|
}
|
|
MetaList(ref name, ref items) => {
|
|
ebml_w.start_tag(tag_meta_item_list);
|
|
ebml_w.start_tag(tag_meta_item_name);
|
|
ebml_w.writer.write(name.get().as_bytes());
|
|
ebml_w.end_tag();
|
|
for inner_item in items.iter() {
|
|
encode_meta_item(ebml_w, *inner_item);
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_attributes(ebml_w: &mut Encoder, attrs: &[Attribute]) {
|
|
ebml_w.start_tag(tag_attributes);
|
|
for attr in attrs.iter() {
|
|
ebml_w.start_tag(tag_attribute);
|
|
encode_meta_item(ebml_w, attr.node.value);
|
|
ebml_w.end_tag();
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
// So there's a special crate attribute called 'crate_id' which defines the
|
|
// metadata that Rust cares about for linking crates. If the user didn't
|
|
// provide it we will throw it in anyway with a default value.
|
|
fn synthesize_crate_attrs(ecx: &EncodeContext,
|
|
krate: &Crate) -> Vec<Attribute> {
|
|
|
|
fn synthesize_crateid_attr(ecx: &EncodeContext) -> Attribute {
|
|
assert!(!ecx.link_meta.crateid.name.is_empty());
|
|
|
|
attr::mk_attr(
|
|
attr::mk_name_value_item_str(
|
|
InternedString::new("crate_id"),
|
|
token::intern_and_get_ident(ecx.link_meta.crateid.to_str())))
|
|
}
|
|
|
|
let mut attrs = Vec::new();
|
|
for attr in krate.attrs.iter() {
|
|
if !attr.name().equiv(&("crate_id")) {
|
|
attrs.push(*attr);
|
|
}
|
|
}
|
|
attrs.push(synthesize_crateid_attr(ecx));
|
|
|
|
attrs
|
|
}
|
|
|
|
fn encode_crate_deps(ebml_w: &mut Encoder, cstore: &cstore::CStore) {
|
|
fn get_ordered_deps(cstore: &cstore::CStore) -> Vec<decoder::CrateDep> {
|
|
// Pull the cnums and name,vers,hash out of cstore
|
|
let mut deps = Vec::new();
|
|
cstore.iter_crate_data(|key, val| {
|
|
let dep = decoder::CrateDep {
|
|
cnum: key,
|
|
crate_id: decoder::get_crate_id(val.data()),
|
|
hash: decoder::get_crate_hash(val.data())
|
|
};
|
|
deps.push(dep);
|
|
});
|
|
|
|
// Sort by cnum
|
|
deps.sort_by(|kv1, kv2| kv1.cnum.cmp(&kv2.cnum));
|
|
|
|
// Sanity-check the crate numbers
|
|
let mut expected_cnum = 1;
|
|
for n in deps.iter() {
|
|
assert_eq!(n.cnum, expected_cnum);
|
|
expected_cnum += 1;
|
|
}
|
|
|
|
deps
|
|
}
|
|
|
|
// We're just going to write a list of crate 'name-hash-version's, with
|
|
// the assumption that they are numbered 1 to n.
|
|
// FIXME (#2166): This is not nearly enough to support correct versioning
|
|
// but is enough to get transitive crate dependencies working.
|
|
ebml_w.start_tag(tag_crate_deps);
|
|
let r = get_ordered_deps(cstore);
|
|
for dep in r.iter() {
|
|
encode_crate_dep(ebml_w, (*dep).clone());
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_lang_items(ecx: &EncodeContext, ebml_w: &mut Encoder) {
|
|
ebml_w.start_tag(tag_lang_items);
|
|
|
|
for (i, def_id) in ecx.tcx.lang_items.items() {
|
|
for id in def_id.iter() {
|
|
if id.krate == LOCAL_CRATE {
|
|
ebml_w.start_tag(tag_lang_items_item);
|
|
|
|
ebml_w.start_tag(tag_lang_items_item_id);
|
|
{
|
|
let wr: &mut MemWriter = ebml_w.writer;
|
|
wr.write_be_u32(i as u32);
|
|
}
|
|
ebml_w.end_tag(); // tag_lang_items_item_id
|
|
|
|
ebml_w.start_tag(tag_lang_items_item_node_id);
|
|
{
|
|
let wr: &mut MemWriter = ebml_w.writer;
|
|
wr.write_be_u32(id.node as u32);
|
|
}
|
|
ebml_w.end_tag(); // tag_lang_items_item_node_id
|
|
|
|
ebml_w.end_tag(); // tag_lang_items_item
|
|
}
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag(); // tag_lang_items
|
|
}
|
|
|
|
fn encode_native_libraries(ecx: &EncodeContext, ebml_w: &mut Encoder) {
|
|
ebml_w.start_tag(tag_native_libraries);
|
|
|
|
for &(ref lib, kind) in ecx.tcx.sess.cstore.get_used_libraries()
|
|
.borrow().iter() {
|
|
match kind {
|
|
cstore::NativeStatic => {} // these libraries are not propagated
|
|
cstore::NativeFramework | cstore::NativeUnknown => {
|
|
ebml_w.start_tag(tag_native_libraries_lib);
|
|
|
|
ebml_w.start_tag(tag_native_libraries_kind);
|
|
ebml_w.writer.write_be_u32(kind as u32);
|
|
ebml_w.end_tag();
|
|
|
|
ebml_w.start_tag(tag_native_libraries_name);
|
|
ebml_w.writer.write(lib.as_bytes());
|
|
ebml_w.end_tag();
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_macro_registrar_fn(ecx: &EncodeContext, ebml_w: &mut Encoder) {
|
|
match ecx.tcx.sess.macro_registrar_fn.get() {
|
|
Some(id) => { ebml_w.wr_tagged_u32(tag_macro_registrar_fn, id); }
|
|
None => {}
|
|
}
|
|
}
|
|
|
|
struct MacroDefVisitor<'a, 'b, 'c> {
|
|
ecx: &'a EncodeContext<'b>,
|
|
ebml_w: &'a mut Encoder<'c>
|
|
}
|
|
|
|
impl<'a, 'b, 'c> Visitor<()> for MacroDefVisitor<'a, 'b, 'c> {
|
|
fn visit_item(&mut self, item: &Item, _: ()) {
|
|
match item.node {
|
|
ItemMac(..) => {
|
|
let def = self.ecx.tcx.sess.codemap().span_to_snippet(item.span)
|
|
.expect("Unable to find source for macro");
|
|
self.ebml_w.start_tag(tag_macro_def);
|
|
self.ebml_w.wr_str(def.as_slice());
|
|
self.ebml_w.end_tag();
|
|
}
|
|
_ => {}
|
|
}
|
|
visit::walk_item(self, item, ());
|
|
}
|
|
}
|
|
|
|
fn encode_macro_defs<'a>(ecx: &'a EncodeContext,
|
|
krate: &Crate,
|
|
ebml_w: &'a mut Encoder) {
|
|
ebml_w.start_tag(tag_exported_macros);
|
|
{
|
|
let mut visitor = MacroDefVisitor {
|
|
ecx: ecx,
|
|
ebml_w: ebml_w,
|
|
};
|
|
visit::walk_crate(&mut visitor, krate, ());
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
struct ImplVisitor<'a,'b,'c> {
|
|
ecx: &'a EncodeContext<'b>,
|
|
ebml_w: &'a mut Encoder<'c>,
|
|
}
|
|
|
|
impl<'a,'b,'c> Visitor<()> for ImplVisitor<'a,'b,'c> {
|
|
fn visit_item(&mut self, item: &Item, _: ()) {
|
|
match item.node {
|
|
ItemImpl(_, Some(ref trait_ref), _, _) => {
|
|
let def_map = &self.ecx.tcx.def_map;
|
|
let trait_def = def_map.borrow().get_copy(&trait_ref.ref_id);
|
|
let def_id = ast_util::def_id_of_def(trait_def);
|
|
|
|
// Load eagerly if this is an implementation of the Drop trait
|
|
// or if the trait is not defined in this crate.
|
|
if Some(def_id) == self.ecx.tcx.lang_items.drop_trait() ||
|
|
def_id.krate != LOCAL_CRATE {
|
|
self.ebml_w.start_tag(tag_impls_impl);
|
|
encode_def_id(self.ebml_w, local_def(item.id));
|
|
self.ebml_w.end_tag();
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
visit::walk_item(self, item, ());
|
|
}
|
|
}
|
|
|
|
/// Encodes implementations that are eagerly loaded.
|
|
///
|
|
/// None of this is necessary in theory; we can load all implementations
|
|
/// lazily. However, in two cases the optimizations to lazily load
|
|
/// implementations are not yet implemented. These two cases, which require us
|
|
/// to load implementations eagerly, are:
|
|
///
|
|
/// * Destructors (implementations of the Drop trait).
|
|
///
|
|
/// * Implementations of traits not defined in this crate.
|
|
fn encode_impls<'a>(ecx: &'a EncodeContext,
|
|
krate: &Crate,
|
|
ebml_w: &'a mut Encoder) {
|
|
ebml_w.start_tag(tag_impls);
|
|
|
|
{
|
|
let mut visitor = ImplVisitor {
|
|
ecx: ecx,
|
|
ebml_w: ebml_w,
|
|
};
|
|
visit::walk_crate(&mut visitor, krate, ());
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_misc_info(ecx: &EncodeContext,
|
|
krate: &Crate,
|
|
ebml_w: &mut Encoder) {
|
|
ebml_w.start_tag(tag_misc_info);
|
|
ebml_w.start_tag(tag_misc_info_crate_items);
|
|
for &item in krate.module.items.iter() {
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(local_def(item.id)).as_slice());
|
|
ebml_w.end_tag();
|
|
|
|
each_auxiliary_node_id(item, |auxiliary_node_id| {
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(local_def(
|
|
auxiliary_node_id)).as_slice());
|
|
ebml_w.end_tag();
|
|
true
|
|
});
|
|
}
|
|
|
|
// Encode reexports for the root module.
|
|
encode_reexports(ecx, ebml_w, 0, ast_map::Values([].iter()).chain(None));
|
|
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_crate_dep(ebml_w: &mut Encoder,
|
|
dep: decoder::CrateDep) {
|
|
ebml_w.start_tag(tag_crate_dep);
|
|
ebml_w.start_tag(tag_crate_dep_crateid);
|
|
ebml_w.writer.write(dep.crate_id.to_str().as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_crate_dep_hash);
|
|
ebml_w.writer.write(dep.hash.as_str().as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_hash(ebml_w: &mut Encoder, hash: &Svh) {
|
|
ebml_w.start_tag(tag_crate_hash);
|
|
ebml_w.writer.write(hash.as_str().as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_crate_id(ebml_w: &mut Encoder, crate_id: &CrateId) {
|
|
ebml_w.start_tag(tag_crate_crateid);
|
|
ebml_w.writer.write(crate_id.to_str().as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_crate_triple(ebml_w: &mut Encoder, triple: &str) {
|
|
ebml_w.start_tag(tag_crate_triple);
|
|
ebml_w.writer.write(triple.as_bytes());
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_dylib_dependency_formats(ebml_w: &mut Encoder, ecx: &EncodeContext) {
|
|
ebml_w.start_tag(tag_dylib_dependency_formats);
|
|
match ecx.tcx.dependency_formats.borrow().find(&config::CrateTypeDylib) {
|
|
Some(arr) => {
|
|
let s = arr.iter().enumerate().filter_map(|(i, slot)| {
|
|
slot.map(|kind| (format!("{}:{}", i + 1, match kind {
|
|
cstore::RequireDynamic => "d",
|
|
cstore::RequireStatic => "s",
|
|
})).to_strbuf())
|
|
}).collect::<Vec<StrBuf>>();
|
|
ebml_w.writer.write(s.connect(",").as_bytes());
|
|
}
|
|
None => {}
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
// NB: Increment this as you change the metadata encoding version.
|
|
pub static metadata_encoding_version : &'static [u8] =
|
|
&[0x72, //'r' as u8,
|
|
0x75, //'u' as u8,
|
|
0x73, //'s' as u8,
|
|
0x74, //'t' as u8,
|
|
0, 0, 0, 1 ];
|
|
|
|
pub fn encode_metadata(parms: EncodeParams, krate: &Crate) -> Vec<u8> {
|
|
let mut wr = MemWriter::new();
|
|
encode_metadata_inner(&mut wr, parms, krate);
|
|
wr.unwrap().move_iter().collect()
|
|
}
|
|
|
|
fn encode_metadata_inner(wr: &mut MemWriter, parms: EncodeParams, krate: &Crate) {
|
|
struct Stats {
|
|
attr_bytes: u64,
|
|
dep_bytes: u64,
|
|
lang_item_bytes: u64,
|
|
native_lib_bytes: u64,
|
|
macro_registrar_fn_bytes: u64,
|
|
macro_defs_bytes: u64,
|
|
impl_bytes: u64,
|
|
misc_bytes: u64,
|
|
item_bytes: u64,
|
|
index_bytes: u64,
|
|
zero_bytes: u64,
|
|
total_bytes: u64,
|
|
}
|
|
let mut stats = Stats {
|
|
attr_bytes: 0,
|
|
dep_bytes: 0,
|
|
lang_item_bytes: 0,
|
|
native_lib_bytes: 0,
|
|
macro_registrar_fn_bytes: 0,
|
|
macro_defs_bytes: 0,
|
|
impl_bytes: 0,
|
|
misc_bytes: 0,
|
|
item_bytes: 0,
|
|
index_bytes: 0,
|
|
zero_bytes: 0,
|
|
total_bytes: 0,
|
|
};
|
|
let EncodeParams {
|
|
item_symbols,
|
|
diag,
|
|
tcx,
|
|
reexports2,
|
|
cstore,
|
|
encode_inlined_item,
|
|
link_meta,
|
|
non_inlineable_statics,
|
|
..
|
|
} = parms;
|
|
let ecx = EncodeContext {
|
|
diag: diag,
|
|
tcx: tcx,
|
|
reexports2: reexports2,
|
|
item_symbols: item_symbols,
|
|
non_inlineable_statics: non_inlineable_statics,
|
|
link_meta: link_meta,
|
|
cstore: cstore,
|
|
encode_inlined_item: RefCell::new(encode_inlined_item),
|
|
type_abbrevs: RefCell::new(HashMap::new()),
|
|
};
|
|
|
|
let mut ebml_w = writer::Encoder(wr);
|
|
|
|
encode_crate_id(&mut ebml_w, &ecx.link_meta.crateid);
|
|
encode_crate_triple(&mut ebml_w,
|
|
tcx.sess
|
|
.targ_cfg
|
|
.target_strs
|
|
.target_triple
|
|
.as_slice());
|
|
encode_hash(&mut ebml_w, &ecx.link_meta.crate_hash);
|
|
encode_dylib_dependency_formats(&mut ebml_w, &ecx);
|
|
|
|
let mut i = ebml_w.writer.tell().unwrap();
|
|
let crate_attrs = synthesize_crate_attrs(&ecx, krate);
|
|
encode_attributes(&mut ebml_w, crate_attrs.as_slice());
|
|
stats.attr_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_crate_deps(&mut ebml_w, ecx.cstore);
|
|
stats.dep_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode the language items.
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_lang_items(&ecx, &mut ebml_w);
|
|
stats.lang_item_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode the native libraries used
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_native_libraries(&ecx, &mut ebml_w);
|
|
stats.native_lib_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode the macro registrar function
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_macro_registrar_fn(&ecx, &mut ebml_w);
|
|
stats.macro_registrar_fn_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode macro definitions
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_macro_defs(&ecx, krate, &mut ebml_w);
|
|
stats.macro_defs_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode the def IDs of impls, for coherence checking.
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_impls(&ecx, krate, &mut ebml_w);
|
|
stats.impl_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode miscellaneous info.
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_misc_info(&ecx, krate, &mut ebml_w);
|
|
stats.misc_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
// Encode and index the items.
|
|
ebml_w.start_tag(tag_items);
|
|
i = ebml_w.writer.tell().unwrap();
|
|
let items_index = encode_info_for_items(&ecx, &mut ebml_w, krate);
|
|
stats.item_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
|
|
i = ebml_w.writer.tell().unwrap();
|
|
encode_index(&mut ebml_w, items_index, write_i64);
|
|
stats.index_bytes = ebml_w.writer.tell().unwrap() - i;
|
|
ebml_w.end_tag();
|
|
|
|
stats.total_bytes = ebml_w.writer.tell().unwrap();
|
|
|
|
if tcx.sess.meta_stats() {
|
|
for e in ebml_w.writer.get_ref().iter() {
|
|
if *e == 0 {
|
|
stats.zero_bytes += 1;
|
|
}
|
|
}
|
|
|
|
println!("metadata stats:");
|
|
println!(" attribute bytes: {}", stats.attr_bytes);
|
|
println!(" dep bytes: {}", stats.dep_bytes);
|
|
println!(" lang item bytes: {}", stats.lang_item_bytes);
|
|
println!(" native bytes: {}", stats.native_lib_bytes);
|
|
println!("macro registrar bytes: {}", stats.macro_registrar_fn_bytes);
|
|
println!(" macro def bytes: {}", stats.macro_defs_bytes);
|
|
println!(" impl bytes: {}", stats.impl_bytes);
|
|
println!(" misc bytes: {}", stats.misc_bytes);
|
|
println!(" item bytes: {}", stats.item_bytes);
|
|
println!(" index bytes: {}", stats.index_bytes);
|
|
println!(" zero bytes: {}", stats.zero_bytes);
|
|
println!(" total bytes: {}", stats.total_bytes);
|
|
}
|
|
}
|
|
|
|
// Get the encoded string for a type
|
|
pub fn encoded_ty(tcx: &ty::ctxt, t: ty::t) -> StrBuf {
|
|
let mut wr = MemWriter::new();
|
|
tyencode::enc_ty(&mut wr, &tyencode::ctxt {
|
|
diag: tcx.sess.diagnostic(),
|
|
ds: def_to_str,
|
|
tcx: tcx,
|
|
abbrevs: &RefCell::new(HashMap::new())
|
|
}, t);
|
|
str::from_utf8_owned(wr.get_ref().to_owned()).unwrap().to_strbuf()
|
|
}
|