1889 lines
65 KiB
Rust
1889 lines
65 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Metadata encoding
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use metadata::common::*;
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use metadata::cstore;
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use metadata::decoder;
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use metadata::tyencode;
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use middle::ty::{node_id_to_type, lookup_item_type};
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use middle::astencode;
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use middle::ty;
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use middle::typeck;
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use middle;
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use std::hashmap::{HashMap, HashSet};
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use std::io::{Writer, Seek, Decorator};
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use std::io::mem::MemWriter;
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use std::str;
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use std::vec;
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use extra::flate;
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use extra::serialize::Encodable;
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use extra;
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use syntax::abi::AbiSet;
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use syntax::ast::*;
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use syntax::ast;
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use syntax::ast_map;
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use syntax::ast_util::*;
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use syntax::attr;
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use syntax::attr::AttrMetaMethods;
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use syntax::diagnostic::span_handler;
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use syntax::parse::token::special_idents;
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use syntax::ast_util;
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use syntax::visit::Visitor;
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use syntax::visit;
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use syntax::parse::token;
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use syntax;
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use writer = extra::ebml::writer;
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use std::cast;
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// used by astencode:
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type abbrev_map = @mut HashMap<ty::t, tyencode::ty_abbrev>;
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pub type encode_inlined_item<'self> = 'self |ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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path: &[ast_map::path_elt],
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ii: ast::inlined_item|;
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pub struct EncodeParams<'self> {
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diag: @mut span_handler,
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tcx: ty::ctxt,
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reexports2: middle::resolve::ExportMap2,
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item_symbols: &'self HashMap<ast::NodeId, ~str>,
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discrim_symbols: &'self HashMap<ast::NodeId, @str>,
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non_inlineable_statics: &'self HashSet<ast::NodeId>,
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link_meta: &'self LinkMeta,
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cstore: @mut cstore::CStore,
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encode_inlined_item: encode_inlined_item<'self>,
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reachable: @mut HashSet<ast::NodeId>,
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}
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struct Stats {
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inline_bytes: u64,
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attr_bytes: u64,
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dep_bytes: u64,
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lang_item_bytes: u64,
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native_lib_bytes: u64,
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impl_bytes: u64,
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misc_bytes: u64,
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item_bytes: u64,
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index_bytes: u64,
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zero_bytes: u64,
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total_bytes: u64,
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n_inlines: uint
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}
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pub struct EncodeContext<'self> {
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diag: @mut span_handler,
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tcx: ty::ctxt,
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stats: @mut Stats,
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reexports2: middle::resolve::ExportMap2,
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item_symbols: &'self HashMap<ast::NodeId, ~str>,
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discrim_symbols: &'self HashMap<ast::NodeId, @str>,
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non_inlineable_statics: &'self HashSet<ast::NodeId>,
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link_meta: &'self LinkMeta,
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cstore: &'self cstore::CStore,
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encode_inlined_item: encode_inlined_item<'self>,
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type_abbrevs: abbrev_map,
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reachable: @mut HashSet<ast::NodeId>,
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}
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pub fn reachable(ecx: &EncodeContext, id: NodeId) -> bool {
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ecx.reachable.contains(&id)
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}
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fn encode_name(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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name: Ident) {
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ebml_w.wr_tagged_str(tag_paths_data_name, ecx.tcx.sess.str_of(name));
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}
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fn encode_impl_type_basename(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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name: Ident) {
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ebml_w.wr_tagged_str(tag_item_impl_type_basename,
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ecx.tcx.sess.str_of(name));
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}
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pub fn encode_def_id(ebml_w: &mut writer::Encoder, id: DefId) {
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ebml_w.wr_tagged_str(tag_def_id, def_to_str(id));
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}
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#[deriving(Clone)]
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struct entry<T> {
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val: T,
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pos: u64
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}
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fn encode_trait_ref(ebml_w: &mut writer::Encoder,
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ecx: &EncodeContext,
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trait_ref: &ty::TraitRef,
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tag: uint) {
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let ty_str_ctxt = @tyencode::ctxt {
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diag: ecx.diag,
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ds: def_to_str,
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tcx: ecx.tcx,
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abbrevs: tyencode::ac_use_abbrevs(ecx.type_abbrevs)
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};
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ebml_w.start_tag(tag);
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tyencode::enc_trait_ref(ebml_w.writer, ty_str_ctxt, trait_ref);
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ebml_w.end_tag();
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}
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fn encode_impl_vtables(ebml_w: &mut writer::Encoder,
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ecx: &EncodeContext,
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vtables: &typeck::impl_res) {
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ebml_w.start_tag(tag_item_impl_vtables);
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astencode::encode_vtable_res(ecx, ebml_w, vtables.trait_vtables);
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astencode::encode_vtable_param_res(ecx, ebml_w, vtables.self_vtables);
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ebml_w.end_tag();
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}
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// Item info table encoding
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fn encode_family(ebml_w: &mut writer::Encoder, c: char) {
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ebml_w.start_tag(tag_items_data_item_family);
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ebml_w.writer.write(&[c as u8]);
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ebml_w.end_tag();
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}
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pub fn def_to_str(did: DefId) -> ~str {
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format!("{}:{}", did.crate, did.node)
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}
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fn encode_ty_type_param_defs(ebml_w: &mut writer::Encoder,
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ecx: &EncodeContext,
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params: @~[ty::TypeParameterDef],
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tag: uint) {
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let ty_str_ctxt = @tyencode::ctxt {
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diag: ecx.diag,
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ds: def_to_str,
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tcx: ecx.tcx,
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abbrevs: tyencode::ac_use_abbrevs(ecx.type_abbrevs)
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};
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for param in params.iter() {
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ebml_w.start_tag(tag);
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tyencode::enc_type_param_def(ebml_w.writer, ty_str_ctxt, param);
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ebml_w.end_tag();
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}
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}
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fn encode_region_param_defs(ebml_w: &mut writer::Encoder,
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ecx: &EncodeContext,
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params: @[ty::RegionParameterDef]) {
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for param in params.iter() {
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ebml_w.start_tag(tag_region_param_def);
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ebml_w.start_tag(tag_region_param_def_ident);
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encode_name(ecx, ebml_w, param.ident);
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ebml_w.end_tag();
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ebml_w.wr_tagged_str(tag_region_param_def_def_id,
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def_to_str(param.def_id));
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ebml_w.end_tag();
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}
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}
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fn encode_item_variances(ebml_w: &mut writer::Encoder,
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ecx: &EncodeContext,
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id: ast::NodeId) {
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let v = ty::item_variances(ecx.tcx, ast_util::local_def(id));
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ebml_w.start_tag(tag_item_variances);
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v.encode(ebml_w);
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ebml_w.end_tag();
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}
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fn encode_bounds_and_type(ebml_w: &mut writer::Encoder,
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ecx: &EncodeContext,
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tpt: &ty::ty_param_bounds_and_ty) {
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encode_ty_type_param_defs(ebml_w, ecx, tpt.generics.type_param_defs,
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tag_items_data_item_ty_param_bounds);
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encode_region_param_defs(ebml_w, ecx, tpt.generics.region_param_defs);
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encode_type(ecx, ebml_w, tpt.ty);
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}
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fn encode_variant_id(ebml_w: &mut writer::Encoder, vid: DefId) {
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ebml_w.start_tag(tag_items_data_item_variant);
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let s = def_to_str(vid);
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ebml_w.writer.write(s.as_bytes());
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ebml_w.end_tag();
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}
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pub fn write_type(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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typ: ty::t) {
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let ty_str_ctxt = @tyencode::ctxt {
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diag: ecx.diag,
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ds: def_to_str,
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tcx: ecx.tcx,
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abbrevs: tyencode::ac_use_abbrevs(ecx.type_abbrevs)
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};
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tyencode::enc_ty(ebml_w.writer, ty_str_ctxt, typ);
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}
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pub fn write_vstore(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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vstore: ty::vstore) {
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let ty_str_ctxt = @tyencode::ctxt {
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diag: ecx.diag,
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ds: def_to_str,
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tcx: ecx.tcx,
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abbrevs: tyencode::ac_use_abbrevs(ecx.type_abbrevs)
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};
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tyencode::enc_vstore(ebml_w.writer, ty_str_ctxt, vstore);
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}
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fn encode_type(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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typ: ty::t) {
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ebml_w.start_tag(tag_items_data_item_type);
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write_type(ecx, ebml_w, typ);
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ebml_w.end_tag();
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}
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fn encode_transformed_self_ty(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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opt_typ: Option<ty::t>) {
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for &typ in opt_typ.iter() {
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ebml_w.start_tag(tag_item_method_transformed_self_ty);
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write_type(ecx, ebml_w, typ);
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ebml_w.end_tag();
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}
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}
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fn encode_method_fty(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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typ: &ty::BareFnTy) {
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ebml_w.start_tag(tag_item_method_fty);
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let ty_str_ctxt = @tyencode::ctxt {
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diag: ecx.diag,
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ds: def_to_str,
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tcx: ecx.tcx,
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abbrevs: tyencode::ac_use_abbrevs(ecx.type_abbrevs)
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};
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tyencode::enc_bare_fn_ty(ebml_w.writer, ty_str_ctxt, typ);
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ebml_w.end_tag();
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}
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fn encode_symbol(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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id: NodeId) {
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ebml_w.start_tag(tag_items_data_item_symbol);
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match ecx.item_symbols.find(&id) {
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Some(x) => {
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debug!("encode_symbol(id={:?}, str={})", id, *x);
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ebml_w.writer.write(x.as_bytes());
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}
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None => {
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ecx.diag.handler().bug(
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format!("encode_symbol: id not found {}", id));
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}
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}
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ebml_w.end_tag();
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}
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fn encode_disr_val(_: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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disr_val: ty::Disr) {
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ebml_w.start_tag(tag_disr_val);
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let s = disr_val.to_str();
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ebml_w.writer.write(s.as_bytes());
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ebml_w.end_tag();
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}
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fn encode_parent_item(ebml_w: &mut writer::Encoder, id: DefId) {
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ebml_w.start_tag(tag_items_data_parent_item);
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let s = def_to_str(id);
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ebml_w.writer.write(s.as_bytes());
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ebml_w.end_tag();
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}
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fn encode_struct_fields(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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def: @struct_def) {
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for f in def.fields.iter() {
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match f.node.kind {
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named_field(ident, vis) => {
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ebml_w.start_tag(tag_item_field);
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encode_struct_field_family(ebml_w, vis);
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encode_name(ecx, ebml_w, ident);
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encode_def_id(ebml_w, local_def(f.node.id));
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ebml_w.end_tag();
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}
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unnamed_field => {
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ebml_w.start_tag(tag_item_unnamed_field);
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encode_def_id(ebml_w, local_def(f.node.id));
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ebml_w.end_tag();
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}
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}
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}
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}
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fn encode_enum_variant_info(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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id: NodeId,
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variants: &[P<variant>],
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path: &[ast_map::path_elt],
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index: @mut ~[entry<i64>],
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generics: &ast::Generics) {
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debug!("encode_enum_variant_info(id={:?})", id);
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let mut disr_val = 0;
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let mut i = 0;
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let vi = ty::enum_variants(ecx.tcx,
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ast::DefId { crate: LOCAL_CRATE, node: id });
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for variant in variants.iter() {
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let def_id = local_def(variant.node.id);
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index.push(entry {val: variant.node.id as i64,
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pos: ebml_w.writer.tell()});
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ebml_w.start_tag(tag_items_data_item);
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encode_def_id(ebml_w, def_id);
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match variant.node.kind {
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ast::tuple_variant_kind(_) => encode_family(ebml_w, 'v'),
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ast::struct_variant_kind(_) => encode_family(ebml_w, 'V')
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}
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encode_name(ecx, ebml_w, variant.node.name);
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encode_parent_item(ebml_w, local_def(id));
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encode_visibility(ebml_w, variant.node.vis);
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encode_attributes(ebml_w, variant.node.attrs);
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match variant.node.kind {
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ast::tuple_variant_kind(ref args)
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if args.len() > 0 && generics.ty_params.len() == 0 => {
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encode_symbol(ecx, ebml_w, variant.node.id);
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}
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ast::tuple_variant_kind(_) => {},
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ast::struct_variant_kind(def) => {
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let idx = encode_info_for_struct(ecx, ebml_w, path,
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def.fields, index);
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encode_struct_fields(ecx, ebml_w, def);
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let bkts = create_index(idx);
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encode_index(ebml_w, bkts, write_i64);
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}
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}
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if vi[i].disr_val != disr_val {
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encode_disr_val(ecx, ebml_w, vi[i].disr_val);
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disr_val = vi[i].disr_val;
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}
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encode_bounds_and_type(ebml_w, ecx,
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&lookup_item_type(ecx.tcx, def_id));
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encode_path(ecx, ebml_w, path,
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ast_map::path_name(variant.node.name));
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ebml_w.end_tag();
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disr_val += 1;
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i += 1;
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}
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}
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fn encode_path(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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path: &[ast_map::path_elt],
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name: ast_map::path_elt) {
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fn encode_path_elt(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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elt: ast_map::path_elt) {
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match elt {
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ast_map::path_mod(n) => {
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ebml_w.wr_tagged_str(tag_path_elt_mod, ecx.tcx.sess.str_of(n));
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}
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ast_map::path_name(n) => {
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ebml_w.wr_tagged_str(tag_path_elt_name, ecx.tcx.sess.str_of(n));
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}
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ast_map::path_pretty_name(n, extra) => {
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ebml_w.start_tag(tag_path_elt_pretty_name);
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ebml_w.wr_tagged_str(tag_path_elt_pretty_name_ident,
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ecx.tcx.sess.str_of(n));
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ebml_w.wr_tagged_u64(tag_path_elt_pretty_name_extra, extra);
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ebml_w.end_tag();
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}
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}
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}
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ebml_w.start_tag(tag_path);
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ebml_w.wr_tagged_u32(tag_path_len, (path.len() + 1) as u32);
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for pe in path.iter() {
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encode_path_elt(ecx, ebml_w, *pe);
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}
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encode_path_elt(ecx, ebml_w, name);
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ebml_w.end_tag();
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}
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fn encode_reexported_static_method(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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exp: &middle::resolve::Export2,
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method_def_id: DefId,
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method_ident: Ident) {
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debug!("(encode reexported static method) {}::{}",
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exp.name, ecx.tcx.sess.str_of(method_ident));
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ebml_w.start_tag(tag_items_data_item_reexport);
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ebml_w.start_tag(tag_items_data_item_reexport_def_id);
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ebml_w.wr_str(def_to_str(method_def_id));
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ebml_w.end_tag();
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ebml_w.start_tag(tag_items_data_item_reexport_name);
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ebml_w.wr_str(format!("{}::{}", exp.name, ecx.tcx.sess.str_of(method_ident)));
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ebml_w.end_tag();
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ebml_w.end_tag();
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}
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fn encode_reexported_static_base_methods(ecx: &EncodeContext,
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ebml_w: &mut writer::Encoder,
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exp: &middle::resolve::Export2)
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-> bool {
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match ecx.tcx.inherent_impls.find(&exp.def_id) {
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Some(implementations) => {
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for &base_impl in implementations.iter() {
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for &m in base_impl.methods.iter() {
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if m.explicit_self == ast::sty_static {
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encode_reexported_static_method(ecx, ebml_w, exp,
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m.def_id, m.ident);
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}
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}
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}
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true
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}
|
|
None => { false }
|
|
}
|
|
}
|
|
|
|
fn encode_reexported_static_trait_methods(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
exp: &middle::resolve::Export2)
|
|
-> bool {
|
|
match ecx.tcx.trait_methods_cache.find(&exp.def_id) {
|
|
Some(methods) => {
|
|
for &m in methods.iter() {
|
|
if m.explicit_self == ast::sty_static {
|
|
encode_reexported_static_method(ecx, ebml_w, exp,
|
|
m.def_id, m.ident);
|
|
}
|
|
}
|
|
|
|
true
|
|
}
|
|
None => { false }
|
|
}
|
|
}
|
|
|
|
fn encode_reexported_static_methods(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
mod_path: &[ast_map::path_elt],
|
|
exp: &middle::resolve::Export2) {
|
|
match ecx.tcx.items.find(&exp.def_id.node) {
|
|
Some(&ast_map::node_item(item, path)) => {
|
|
let original_name = ecx.tcx.sess.str_of(item.ident);
|
|
|
|
//
|
|
// 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 mod_path != *path || exp.name != original_name {
|
|
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 {
|
|
item_enum(ref enum_def, _) => {
|
|
for variant in enum_def.variants.iter() {
|
|
continue_ = callback(variant.node.id);
|
|
if !continue_ {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
item_struct(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[0].node.kind ==
|
|
ast::unnamed_field => {
|
|
continue_ = callback(ctor_id);
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
|
|
continue_
|
|
}
|
|
|
|
fn encode_reexports(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
id: NodeId,
|
|
path: &[ast_map::path_elt]) {
|
|
debug!("(encoding info for module) encoding reexports for {}", id);
|
|
match ecx.reexports2.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.crate,
|
|
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));
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_items_data_item_reexport_name);
|
|
ebml_w.wr_str(exp.name);
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
encode_reexported_static_methods(ecx, ebml_w, path, exp);
|
|
}
|
|
}
|
|
None => {
|
|
debug!("(encoding info for module) found no reexports for {}",
|
|
id);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_mod(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
md: &_mod,
|
|
id: NodeId,
|
|
path: &[ast_map::path_elt],
|
|
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(ecx, ebml_w, 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)));
|
|
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)));
|
|
ebml_w.end_tag();
|
|
true
|
|
});
|
|
|
|
match item.node {
|
|
item_impl(..) => {
|
|
let (ident, did) = (item.ident, item.id);
|
|
debug!("(encoding info for module) ... encoding impl {} \
|
|
({:?}/{:?})",
|
|
ecx.tcx.sess.str_of(ident),
|
|
did,
|
|
ast_map::node_id_to_str(ecx.tcx.items, did, token::get_ident_interner()));
|
|
|
|
ebml_w.start_tag(tag_mod_impl);
|
|
ebml_w.wr_str(def_to_str(local_def(did)));
|
|
ebml_w.end_tag();
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
encode_path(ecx, ebml_w, path, ast_map::path_mod(name));
|
|
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 writer::Encoder,
|
|
visibility: visibility) {
|
|
encode_family(ebml_w, match visibility {
|
|
public => 'g',
|
|
private => 'j',
|
|
inherited => 'N'
|
|
});
|
|
}
|
|
|
|
fn encode_visibility(ebml_w: &mut writer::Encoder, visibility: visibility) {
|
|
ebml_w.start_tag(tag_items_data_item_visibility);
|
|
let ch = match visibility {
|
|
public => 'y',
|
|
private => 'n',
|
|
inherited => 'i',
|
|
};
|
|
ebml_w.wr_str(str::from_char(ch));
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_explicit_self(ebml_w: &mut writer::Encoder, explicit_self: ast::explicit_self_) {
|
|
ebml_w.start_tag(tag_item_trait_method_explicit_self);
|
|
|
|
// Encode the base self type.
|
|
match explicit_self {
|
|
sty_static => {
|
|
ebml_w.writer.write(&[ 's' as u8 ]);
|
|
}
|
|
sty_value(m) => {
|
|
ebml_w.writer.write(&[ 'v' as u8 ]);
|
|
encode_mutability(ebml_w, m);
|
|
}
|
|
sty_region(_, m) => {
|
|
// FIXME(#4846) encode custom lifetime
|
|
ebml_w.writer.write(&[ '&' as u8 ]);
|
|
encode_mutability(ebml_w, m);
|
|
}
|
|
sty_box(m) => {
|
|
ebml_w.writer.write(&[ '@' as u8 ]);
|
|
encode_mutability(ebml_w, m);
|
|
}
|
|
sty_uniq(m) => {
|
|
ebml_w.writer.write(&[ '~' as u8 ]);
|
|
encode_mutability(ebml_w, m);
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
|
|
fn encode_mutability(ebml_w: &writer::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 writer::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 writer::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 writer::Encoder,
|
|
path: &[ast_map::path_elt],
|
|
fields: &[struct_field],
|
|
global_index: @mut ~[entry<i64>])
|
|
-> ~[entry<i64>] {
|
|
/* Each class has its own index, since different classes
|
|
may have fields with the same name */
|
|
let mut index = ~[];
|
|
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, vis) = match field.node.kind {
|
|
named_field(nm, vis) => (nm, vis),
|
|
unnamed_field => (special_idents::unnamed_field, inherited)
|
|
};
|
|
|
|
let id = field.node.id;
|
|
index.push(entry {val: id as i64, pos: ebml_w.writer.tell()});
|
|
global_index.push(entry {val: id as i64, pos: ebml_w.writer.tell()});
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
debug!("encode_info_for_struct: doing {} {}",
|
|
tcx.sess.str_of(nm), id);
|
|
encode_struct_field_family(ebml_w, vis);
|
|
encode_name(ecx, ebml_w, nm);
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(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 writer::Encoder,
|
|
path: &[ast_map::path_elt],
|
|
name: ast::Ident,
|
|
ctor_id: NodeId,
|
|
index: @mut ~[entry<i64>],
|
|
struct_id: NodeId) {
|
|
index.push(entry { val: ctor_id as i64, pos: ebml_w.writer.tell() });
|
|
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, local_def(ctor_id));
|
|
encode_family(ebml_w, 'f');
|
|
encode_name(ecx, ebml_w, name);
|
|
encode_type(ecx, ebml_w, node_id_to_type(ecx.tcx, ctor_id));
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(name));
|
|
encode_parent_item(ebml_w, local_def(struct_id));
|
|
|
|
if ecx.item_symbols.contains_key(&ctor_id) {
|
|
encode_symbol(ecx, ebml_w, ctor_id);
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_method_ty_fields(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
method_ty: &ty::Method) {
|
|
encode_def_id(ebml_w, method_ty.def_id);
|
|
encode_name(ecx, ebml_w, method_ty.ident);
|
|
encode_ty_type_param_defs(ebml_w, ecx,
|
|
method_ty.generics.type_param_defs,
|
|
tag_item_method_tps);
|
|
encode_transformed_self_ty(ecx, ebml_w, method_ty.transformed_self_ty);
|
|
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 purity = method_ty.fty.purity;
|
|
match method_ty.explicit_self {
|
|
ast::sty_static => {
|
|
encode_family(ebml_w, purity_static_method_family(purity));
|
|
}
|
|
_ => encode_family(ebml_w, purity_fn_family(purity))
|
|
}
|
|
encode_provided_source(ebml_w, method_ty.provided_source);
|
|
}
|
|
|
|
fn encode_info_for_method(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
m: &ty::Method,
|
|
impl_path: &[ast_map::path_elt],
|
|
is_default_impl: bool,
|
|
parent_id: NodeId,
|
|
ast_method_opt: Option<@method>) {
|
|
|
|
debug!("encode_info_for_method: {:?} {}", m.def_id,
|
|
ecx.tcx.sess.str_of(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);
|
|
|
|
encode_path(ecx, ebml_w, impl_path, ast_map::path_name(m.ident));
|
|
|
|
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) {
|
|
(ecx.encode_inlined_item)(
|
|
ecx, ebml_w, impl_path,
|
|
ii_method(local_def(parent_id), false, *ast_method));
|
|
} else {
|
|
encode_symbol(ecx, ebml_w, m.def_id.node);
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn purity_fn_family(p: purity) -> char {
|
|
match p {
|
|
unsafe_fn => 'u',
|
|
impure_fn => 'f',
|
|
extern_fn => 'e'
|
|
}
|
|
}
|
|
|
|
fn purity_static_method_family(p: purity) -> char {
|
|
match p {
|
|
unsafe_fn => 'U',
|
|
impure_fn => 'F',
|
|
_ => fail!("extern fn can't be static")
|
|
}
|
|
}
|
|
|
|
|
|
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 writer::Encoder,
|
|
def_id: DefId) {
|
|
match ecx.tcx.inherent_impls.find(&def_id) {
|
|
None => {}
|
|
Some(&implementations) => {
|
|
for implementation in implementations.iter() {
|
|
ebml_w.start_tag(tag_items_data_item_inherent_impl);
|
|
encode_def_id(ebml_w, implementation.did);
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Encodes the implementations of a trait defined in this crate.
|
|
fn encode_extension_implementations(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
trait_def_id: DefId) {
|
|
match ecx.tcx.trait_impls.find(&trait_def_id) {
|
|
None => {}
|
|
Some(&implementations) => {
|
|
for implementation in implementations.iter() {
|
|
ebml_w.start_tag(tag_items_data_item_extension_impl);
|
|
encode_def_id(ebml_w, implementation.did);
|
|
ebml_w.end_tag();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_item(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
item: @item,
|
|
index: @mut ~[entry<i64>],
|
|
path: &[ast_map::path_elt],
|
|
vis: ast::visibility) {
|
|
let tcx = ecx.tcx;
|
|
|
|
fn add_to_index(item: @item, ebml_w: &writer::Encoder,
|
|
index: @mut ~[entry<i64>]) {
|
|
index.push(entry { val: item.id as i64, pos: ebml_w.writer.tell() });
|
|
}
|
|
let add_to_index: || = || add_to_index(item, ebml_w, index);
|
|
|
|
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 {
|
|
item_static(_, m, _) => {
|
|
add_to_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(ecx, ebml_w, item.ident);
|
|
let elt = ast_map::path_pretty_name(item.ident, item.id as u64);
|
|
encode_path(ecx, ebml_w, path, elt);
|
|
if !ecx.non_inlineable_statics.contains(&item.id) {
|
|
(ecx.encode_inlined_item)(ecx, ebml_w, path, ii_item(item));
|
|
}
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
item_fn(_, purity, _, ref generics, _) => {
|
|
add_to_index();
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, purity_fn_family(purity));
|
|
let tps_len = generics.ty_params.len();
|
|
encode_bounds_and_type(ebml_w, ecx, &lookup_item_type(tcx, def_id));
|
|
encode_name(ecx, ebml_w, item.ident);
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(item.ident));
|
|
encode_attributes(ebml_w, item.attrs);
|
|
if tps_len > 0u || should_inline(item.attrs) {
|
|
(ecx.encode_inlined_item)(ecx, ebml_w, path, ii_item(item));
|
|
} else {
|
|
encode_symbol(ecx, ebml_w, item.id);
|
|
}
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
item_mod(ref m) => {
|
|
add_to_index();
|
|
encode_info_for_mod(ecx,
|
|
ebml_w,
|
|
m,
|
|
item.id,
|
|
path,
|
|
item.ident,
|
|
item.vis);
|
|
}
|
|
item_foreign_mod(ref fm) => {
|
|
add_to_index();
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
encode_def_id(ebml_w, def_id);
|
|
encode_family(ebml_w, 'n');
|
|
encode_name(ecx, ebml_w, item.ident);
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(item.ident));
|
|
|
|
// 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)));
|
|
ebml_w.end_tag();
|
|
}
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
item_ty(..) => {
|
|
add_to_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(ecx, ebml_w, item.ident);
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(item.ident));
|
|
encode_visibility(ebml_w, vis);
|
|
ebml_w.end_tag();
|
|
}
|
|
item_enum(ref enum_definition, ref generics) => {
|
|
add_to_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(ecx, ebml_w, item.ident);
|
|
encode_attributes(ebml_w, item.attrs);
|
|
for v in (*enum_definition).variants.iter() {
|
|
encode_variant_id(ebml_w, local_def(v.node.id));
|
|
}
|
|
(ecx.encode_inlined_item)(ecx, ebml_w, path, ii_item(item));
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(item.ident));
|
|
|
|
// 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,
|
|
path,
|
|
index,
|
|
generics);
|
|
}
|
|
item_struct(struct_def, _) => {
|
|
/* 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, path,
|
|
struct_def.fields, index);
|
|
|
|
/* Index the class*/
|
|
add_to_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(ecx, ebml_w, item.ident);
|
|
encode_attributes(ebml_w, item.attrs);
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(item.ident));
|
|
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(ecx, ebml_w, struct_def);
|
|
|
|
(ecx.encode_inlined_item)(ecx, ebml_w, path, ii_item(item));
|
|
|
|
// Encode inherent implementations for this structure.
|
|
encode_inherent_implementations(ecx, ebml_w, def_id);
|
|
|
|
/* Each class has its own index -- encode it */
|
|
let bkts = create_index(idx);
|
|
encode_index(ebml_w, bkts, write_i64);
|
|
ebml_w.end_tag();
|
|
|
|
// If this is a tuple- or enum-like struct, encode the type of the
|
|
// constructor.
|
|
if struct_def.fields.len() > 0 &&
|
|
struct_def.fields[0].node.kind == ast::unnamed_field {
|
|
let ctor_id = match struct_def.ctor_id {
|
|
Some(ctor_id) => ctor_id,
|
|
None => ecx.tcx.sess.bug("struct def didn't have ctor id"),
|
|
};
|
|
|
|
encode_info_for_struct_ctor(ecx,
|
|
ebml_w,
|
|
path,
|
|
item.ident,
|
|
ctor_id,
|
|
index,
|
|
def_id.node);
|
|
}
|
|
}
|
|
item_impl(_, 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 imp = tcx.impls.get(&def_id);
|
|
|
|
add_to_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(ecx, ebml_w, item.ident);
|
|
encode_attributes(ebml_w, item.attrs);
|
|
match ty.node {
|
|
ast::ty_path(ref path, ref bounds, _) if path.segments
|
|
.len() == 1 => {
|
|
assert!(bounds.is_none());
|
|
encode_impl_type_basename(ecx, ebml_w,
|
|
ast_util::path_to_ident(path));
|
|
}
|
|
_ => {}
|
|
}
|
|
for method in imp.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);
|
|
}
|
|
let elt = ast_map::impl_pretty_name(opt_trait, ty, item.ident);
|
|
encode_path(ecx, ebml_w, path, elt);
|
|
ebml_w.end_tag();
|
|
|
|
// >:-<
|
|
let mut impl_path = vec::append(~[], path);
|
|
impl_path.push(elt);
|
|
|
|
// 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, m) in imp.methods.iter().enumerate() {
|
|
let ast_method = if i < num_implemented_methods {
|
|
Some(ast_methods[i])
|
|
} else { None };
|
|
|
|
index.push(entry {val: m.def_id.node as i64,
|
|
pos: ebml_w.writer.tell()});
|
|
encode_info_for_method(ecx,
|
|
ebml_w,
|
|
*m,
|
|
impl_path,
|
|
false,
|
|
item.id,
|
|
ast_method)
|
|
}
|
|
}
|
|
item_trait(_, ref super_traits, ref ms) => {
|
|
add_to_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_trait_ref(ebml_w, ecx, trait_def.trait_ref, tag_item_trait_ref);
|
|
encode_name(ecx, ebml_w, item.ident);
|
|
encode_attributes(ebml_w, item.attrs);
|
|
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));
|
|
ebml_w.end_tag();
|
|
}
|
|
encode_path(ecx, ebml_w, path, ast_map::path_name(item.ident));
|
|
// 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.crate, 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()});
|
|
|
|
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 mut trait_path = vec::append(~[], path);
|
|
trait_path.push(ast_map::path_name(item.ident));
|
|
encode_path(ecx, ebml_w, trait_path, ast_map::path_name(method_ty.ident));
|
|
|
|
match method_ty.explicit_self {
|
|
sty_static => {
|
|
encode_family(ebml_w,
|
|
purity_static_method_family(
|
|
method_ty.fty.purity));
|
|
|
|
let tpt = ty::lookup_item_type(tcx, method_def_id);
|
|
encode_bounds_and_type(ebml_w, ecx, &tpt);
|
|
}
|
|
|
|
_ => {
|
|
encode_family(ebml_w,
|
|
purity_fn_family(
|
|
method_ty.fty.purity));
|
|
}
|
|
}
|
|
|
|
match ms[i] {
|
|
required(_) => {
|
|
encode_method_sort(ebml_w, 'r');
|
|
}
|
|
|
|
provided(m) => {
|
|
// If this is a static method, we've already encoded
|
|
// this.
|
|
if method_ty.explicit_self != sty_static {
|
|
// XXX: 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');
|
|
(ecx.encode_inlined_item)(
|
|
ecx, ebml_w, path,
|
|
ii_method(def_id, true, m));
|
|
}
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
// Encode inherent implementations for this trait.
|
|
encode_inherent_implementations(ecx, ebml_w, def_id);
|
|
}
|
|
item_mac(..) => fail!("item macros unimplemented")
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_foreign_item(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
nitem: @foreign_item,
|
|
index: @mut ~[entry<i64>],
|
|
path: &ast_map::path,
|
|
abi: AbiSet) {
|
|
index.push(entry { val: nitem.id as i64, pos: ebml_w.writer.tell() });
|
|
|
|
ebml_w.start_tag(tag_items_data_item);
|
|
match nitem.node {
|
|
foreign_item_fn(..) => {
|
|
encode_def_id(ebml_w, local_def(nitem.id));
|
|
encode_family(ebml_w, purity_fn_family(impure_fn));
|
|
encode_bounds_and_type(ebml_w, ecx,
|
|
&lookup_item_type(ecx.tcx,local_def(nitem.id)));
|
|
encode_name(ecx, ebml_w, nitem.ident);
|
|
if abi.is_intrinsic() {
|
|
(ecx.encode_inlined_item)(ecx, ebml_w, *path, ii_foreign(nitem));
|
|
} else {
|
|
encode_symbol(ecx, ebml_w, nitem.id);
|
|
}
|
|
encode_path(ecx, ebml_w, *path, ast_map::path_name(nitem.ident));
|
|
}
|
|
foreign_item_static(_, mutbl) => {
|
|
encode_def_id(ebml_w, local_def(nitem.id));
|
|
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(ecx, ebml_w, nitem.ident);
|
|
encode_path(ecx, ebml_w, *path, ast_map::path_name(nitem.ident));
|
|
}
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn my_visit_expr(_e:@Expr) { }
|
|
|
|
fn my_visit_item(i:@item, items: ast_map::map, ebml_w:&writer::Encoder,
|
|
ecx_ptr:*int, index: @mut ~[entry<i64>]) {
|
|
match items.get_copy(&i.id) {
|
|
ast_map::node_item(_, pt) => {
|
|
let mut ebml_w = ebml_w.clone();
|
|
// See above
|
|
let ecx : &EncodeContext = unsafe { cast::transmute(ecx_ptr) };
|
|
encode_info_for_item(ecx, &mut ebml_w, i, index, *pt, i.vis);
|
|
}
|
|
_ => fail!("bad item")
|
|
}
|
|
}
|
|
|
|
fn my_visit_foreign_item(ni:@foreign_item, items: ast_map::map, ebml_w:&writer::Encoder,
|
|
ecx_ptr:*int, index: @mut ~[entry<i64>]) {
|
|
match items.get_copy(&ni.id) {
|
|
ast_map::node_foreign_item(_, abi, _, pt) => {
|
|
debug!("writing foreign item {}::{}",
|
|
ast_map::path_to_str(
|
|
*pt,
|
|
token::get_ident_interner()),
|
|
token::ident_to_str(&ni.ident));
|
|
|
|
let mut ebml_w = ebml_w.clone();
|
|
// See above
|
|
let ecx : &EncodeContext = unsafe { cast::transmute(ecx_ptr) };
|
|
encode_info_for_foreign_item(ecx,
|
|
&mut ebml_w,
|
|
ni,
|
|
index,
|
|
pt,
|
|
abi);
|
|
}
|
|
// case for separate item and foreign-item tables
|
|
_ => fail!("bad foreign item")
|
|
}
|
|
}
|
|
|
|
struct EncodeVisitor {
|
|
ebml_w_for_visit_item: writer::Encoder,
|
|
ebml_w_for_visit_foreign_item: writer::Encoder,
|
|
ecx_ptr:*int,
|
|
items: ast_map::map,
|
|
index: @mut ~[entry<i64>],
|
|
}
|
|
|
|
impl visit::Visitor<()> for EncodeVisitor {
|
|
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.items,
|
|
&self.ebml_w_for_visit_item,
|
|
self.ecx_ptr,
|
|
self.index);
|
|
}
|
|
fn visit_foreign_item(&mut self, ni:@foreign_item, _:()) {
|
|
visit::walk_foreign_item(self, ni, ());
|
|
my_visit_foreign_item(ni,
|
|
self.items,
|
|
&self.ebml_w_for_visit_foreign_item,
|
|
self.ecx_ptr,
|
|
self.index);
|
|
}
|
|
}
|
|
|
|
fn encode_info_for_items(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
crate: &Crate)
|
|
-> ~[entry<i64>] {
|
|
let index = @mut ~[];
|
|
ebml_w.start_tag(tag_items_data);
|
|
index.push(entry { val: CRATE_NODE_ID as i64, pos: ebml_w.writer.tell() });
|
|
encode_info_for_mod(ecx,
|
|
ebml_w,
|
|
&crate.module,
|
|
CRATE_NODE_ID,
|
|
[],
|
|
syntax::parse::token::special_idents::invalid,
|
|
public);
|
|
let items = ecx.tcx.items;
|
|
|
|
// See comment in `encode_side_tables_for_ii` in astencode
|
|
let ecx_ptr : *int = unsafe { cast::transmute(ecx) };
|
|
let mut visitor = EncodeVisitor {
|
|
index: index,
|
|
items: items,
|
|
ecx_ptr: ecx_ptr,
|
|
ebml_w_for_visit_item: (*ebml_w).clone(),
|
|
ebml_w_for_visit_foreign_item: (*ebml_w).clone(),
|
|
};
|
|
|
|
visit::walk_crate(&mut visitor, crate, ());
|
|
|
|
ebml_w.end_tag();
|
|
return /*bad*/(*index).clone();
|
|
}
|
|
|
|
|
|
// Path and definition ID indexing
|
|
|
|
fn create_index<T:Clone + Hash + IterBytes + 'static>(
|
|
index: ~[entry<T>])
|
|
-> ~[@~[entry<T>]] {
|
|
let mut buckets: ~[@mut ~[entry<T>]] = ~[];
|
|
for _ in range(0u, 256u) { buckets.push(@mut ~[]); };
|
|
for elt in index.iter() {
|
|
let h = elt.val.hash() as uint;
|
|
buckets[h % 256].push((*elt).clone());
|
|
}
|
|
|
|
let mut buckets_frozen = ~[];
|
|
for bucket in buckets.iter() {
|
|
buckets_frozen.push(@/*bad*/(**bucket).clone());
|
|
}
|
|
return buckets_frozen;
|
|
}
|
|
|
|
fn encode_index<T:'static>(
|
|
ebml_w: &mut writer::Encoder,
|
|
buckets: ~[@~[entry<T>]],
|
|
write_fn: |@mut MemWriter, &T|) {
|
|
ebml_w.start_tag(tag_index);
|
|
let mut bucket_locs = ~[];
|
|
ebml_w.start_tag(tag_index_buckets);
|
|
for bucket in buckets.iter() {
|
|
bucket_locs.push(ebml_w.writer.tell());
|
|
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 writer::Encoder, mi: @MetaItem) {
|
|
match mi.node {
|
|
MetaWord(name) => {
|
|
ebml_w.start_tag(tag_meta_item_word);
|
|
ebml_w.start_tag(tag_meta_item_name);
|
|
ebml_w.writer.write(name.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
MetaNameValue(name, value) => {
|
|
match value.node {
|
|
lit_str(value, _) => {
|
|
ebml_w.start_tag(tag_meta_item_name_value);
|
|
ebml_w.start_tag(tag_meta_item_name);
|
|
ebml_w.writer.write(name.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_meta_item_value);
|
|
ebml_w.writer.write(value.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
_ => {/* FIXME (#623): encode other variants */ }
|
|
}
|
|
}
|
|
MetaList(name, ref items) => {
|
|
ebml_w.start_tag(tag_meta_item_list);
|
|
ebml_w.start_tag(tag_meta_item_name);
|
|
ebml_w.writer.write(name.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 writer::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 'link' which defines the
|
|
// metadata that Rust cares about for linking crates. This attribute requires
|
|
// 'name', 'vers' and 'package_id' items, so if the user didn't provide them we
|
|
// will throw them in anyway with default values.
|
|
fn synthesize_crate_attrs(ecx: &EncodeContext,
|
|
crate: &Crate) -> ~[Attribute] {
|
|
|
|
fn synthesize_link_attr(ecx: &EncodeContext, items: ~[@MetaItem]) ->
|
|
Attribute {
|
|
|
|
assert!(!ecx.link_meta.name.is_empty());
|
|
assert!(!ecx.link_meta.vers.is_empty());
|
|
|
|
let name_item =
|
|
attr::mk_name_value_item_str(@"name",
|
|
ecx.link_meta.name);
|
|
let vers_item =
|
|
attr::mk_name_value_item_str(@"vers",
|
|
ecx.link_meta.vers);
|
|
|
|
let pkgid_item = match ecx.link_meta.package_id {
|
|
Some(pkg_id) => attr::mk_name_value_item_str(@"package_id",
|
|
pkg_id),
|
|
// uses package_id equal to name;
|
|
// this should never happen here but package_id is an Option
|
|
// FIXME (#10370): change package_id in LinkMeta to @str instead of Option<@str>
|
|
_ => attr::mk_name_value_item_str(@"package_id",
|
|
ecx.link_meta.name)
|
|
};
|
|
|
|
let mut meta_items = ~[name_item, vers_item, pkgid_item];
|
|
|
|
for &mi in items.iter().filter(|mi| "name" != mi.name() && "vers" != mi.name() &&
|
|
"package_id" != mi.name()) {
|
|
meta_items.push(mi);
|
|
}
|
|
let link_item = attr::mk_list_item(@"link", meta_items);
|
|
|
|
return attr::mk_attr(link_item);
|
|
}
|
|
|
|
let mut attrs = ~[];
|
|
let mut found_link_attr = false;
|
|
for attr in crate.attrs.iter() {
|
|
attrs.push(
|
|
if "link" != attr.name() {
|
|
*attr
|
|
} else {
|
|
match attr.meta_item_list() {
|
|
Some(l) => {
|
|
found_link_attr = true;;
|
|
synthesize_link_attr(ecx, l.to_owned())
|
|
}
|
|
_ => *attr
|
|
}
|
|
});
|
|
}
|
|
|
|
if !found_link_attr { attrs.push(synthesize_link_attr(ecx, ~[])); }
|
|
|
|
return attrs;
|
|
}
|
|
|
|
fn encode_crate_deps(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
cstore: &cstore::CStore) {
|
|
fn get_ordered_deps(ecx: &EncodeContext, cstore: &cstore::CStore)
|
|
-> ~[decoder::CrateDep] {
|
|
type numdep = decoder::CrateDep;
|
|
|
|
// Pull the cnums and name,vers,hash out of cstore
|
|
let mut deps = ~[];
|
|
cstore::iter_crate_data(cstore, |key, val| {
|
|
let dep = decoder::CrateDep {cnum: key,
|
|
name: ecx.tcx.sess.ident_of(val.name),
|
|
vers: decoder::get_crate_vers(val.data),
|
|
hash: decoder::get_crate_hash(val.data)};
|
|
deps.push(dep);
|
|
});
|
|
|
|
// Sort by cnum
|
|
extra::sort::quick_sort(deps, |kv1, kv2| kv1.cnum <= 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(ecx, cstore);
|
|
for dep in r.iter() {
|
|
encode_crate_dep(ecx, ebml_w, *dep);
|
|
}
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_lang_items(ecx: &EncodeContext, ebml_w: &mut writer::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.crate == 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 writer::Encoder) {
|
|
ebml_w.start_tag(tag_native_libraries);
|
|
|
|
for &(ref lib, kind) in cstore::get_used_libraries(ecx.cstore).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();
|
|
}
|
|
|
|
struct ImplVisitor<'self> {
|
|
ecx: &'self EncodeContext<'self>,
|
|
ebml_w: &'self mut writer::Encoder,
|
|
}
|
|
|
|
impl<'self> Visitor<()> for ImplVisitor<'self> {
|
|
fn visit_item(&mut self, item: @item, _: ()) {
|
|
match item.node {
|
|
item_impl(_, Some(ref trait_ref), _, _) => {
|
|
let def_map = self.ecx.tcx.def_map;
|
|
let trait_def = def_map.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.crate != 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(ecx: &EncodeContext,
|
|
crate: &Crate,
|
|
ebml_w: &mut writer::Encoder) {
|
|
ebml_w.start_tag(tag_impls);
|
|
|
|
{
|
|
let mut visitor = ImplVisitor {
|
|
ecx: ecx,
|
|
ebml_w: ebml_w,
|
|
};
|
|
visit::walk_crate(&mut visitor, crate, ());
|
|
}
|
|
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_misc_info(ecx: &EncodeContext,
|
|
crate: &Crate,
|
|
ebml_w: &mut writer::Encoder) {
|
|
ebml_w.start_tag(tag_misc_info);
|
|
ebml_w.start_tag(tag_misc_info_crate_items);
|
|
for &item in crate.module.items.iter() {
|
|
ebml_w.start_tag(tag_mod_child);
|
|
ebml_w.wr_str(def_to_str(local_def(item.id)));
|
|
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)));
|
|
ebml_w.end_tag();
|
|
true
|
|
});
|
|
}
|
|
|
|
// Encode reexports for the root module.
|
|
encode_reexports(ecx, ebml_w, 0, []);
|
|
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_crate_dep(ecx: &EncodeContext,
|
|
ebml_w: &mut writer::Encoder,
|
|
dep: decoder::CrateDep) {
|
|
ebml_w.start_tag(tag_crate_dep);
|
|
ebml_w.start_tag(tag_crate_dep_name);
|
|
let s = ecx.tcx.sess.str_of(dep.name);
|
|
ebml_w.writer.write(s.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_crate_dep_vers);
|
|
ebml_w.writer.write(dep.vers.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.start_tag(tag_crate_dep_hash);
|
|
ebml_w.writer.write(dep.hash.as_bytes());
|
|
ebml_w.end_tag();
|
|
ebml_w.end_tag();
|
|
}
|
|
|
|
fn encode_hash(ebml_w: &mut writer::Encoder, hash: &str) {
|
|
ebml_w.start_tag(tag_crate_hash);
|
|
ebml_w.writer.write(hash.as_bytes());
|
|
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, crate: &Crate) -> ~[u8] {
|
|
let wr = @mut MemWriter::new();
|
|
let stats = Stats {
|
|
inline_bytes: 0,
|
|
attr_bytes: 0,
|
|
dep_bytes: 0,
|
|
lang_item_bytes: 0,
|
|
native_lib_bytes: 0,
|
|
impl_bytes: 0,
|
|
misc_bytes: 0,
|
|
item_bytes: 0,
|
|
index_bytes: 0,
|
|
zero_bytes: 0,
|
|
total_bytes: 0,
|
|
n_inlines: 0
|
|
};
|
|
let EncodeParams {
|
|
item_symbols,
|
|
diag,
|
|
tcx,
|
|
reexports2,
|
|
discrim_symbols,
|
|
cstore,
|
|
encode_inlined_item,
|
|
link_meta,
|
|
reachable,
|
|
non_inlineable_statics,
|
|
..
|
|
} = parms;
|
|
let type_abbrevs = @mut HashMap::new();
|
|
let stats = @mut stats;
|
|
let ecx = EncodeContext {
|
|
diag: diag,
|
|
tcx: tcx,
|
|
stats: stats,
|
|
reexports2: reexports2,
|
|
item_symbols: item_symbols,
|
|
discrim_symbols: discrim_symbols,
|
|
non_inlineable_statics: non_inlineable_statics,
|
|
link_meta: link_meta,
|
|
cstore: cstore,
|
|
encode_inlined_item: encode_inlined_item,
|
|
type_abbrevs: type_abbrevs,
|
|
reachable: reachable,
|
|
};
|
|
|
|
let mut ebml_w = writer::Encoder(wr);
|
|
|
|
encode_hash(&mut ebml_w, ecx.link_meta.extras_hash);
|
|
|
|
let mut i = wr.tell();
|
|
let crate_attrs = synthesize_crate_attrs(&ecx, crate);
|
|
encode_attributes(&mut ebml_w, crate_attrs);
|
|
ecx.stats.attr_bytes = wr.tell() - i;
|
|
|
|
i = wr.tell();
|
|
encode_crate_deps(&ecx, &mut ebml_w, ecx.cstore);
|
|
ecx.stats.dep_bytes = wr.tell() - i;
|
|
|
|
// Encode the language items.
|
|
i = wr.tell();
|
|
encode_lang_items(&ecx, &mut ebml_w);
|
|
ecx.stats.lang_item_bytes = wr.tell() - i;
|
|
|
|
// Encode the native libraries used
|
|
i = wr.tell();
|
|
encode_native_libraries(&ecx, &mut ebml_w);
|
|
ecx.stats.native_lib_bytes = wr.tell() - i;
|
|
|
|
// Encode the def IDs of impls, for coherence checking.
|
|
i = wr.tell();
|
|
encode_impls(&ecx, crate, &mut ebml_w);
|
|
ecx.stats.impl_bytes = wr.tell() - i;
|
|
|
|
// Encode miscellaneous info.
|
|
i = wr.tell();
|
|
encode_misc_info(&ecx, crate, &mut ebml_w);
|
|
ecx.stats.misc_bytes = wr.tell() - i;
|
|
|
|
// Encode and index the items.
|
|
ebml_w.start_tag(tag_items);
|
|
i = wr.tell();
|
|
let items_index = encode_info_for_items(&ecx, &mut ebml_w, crate);
|
|
ecx.stats.item_bytes = wr.tell() - i;
|
|
|
|
i = wr.tell();
|
|
let items_buckets = create_index(items_index);
|
|
encode_index(&mut ebml_w, items_buckets, write_i64);
|
|
ecx.stats.index_bytes = wr.tell() - i;
|
|
ebml_w.end_tag();
|
|
|
|
ecx.stats.total_bytes = wr.tell();
|
|
|
|
if (tcx.sess.meta_stats()) {
|
|
for e in wr.inner_ref().iter() {
|
|
if *e == 0 {
|
|
ecx.stats.zero_bytes += 1;
|
|
}
|
|
}
|
|
|
|
println("metadata stats:");
|
|
println!(" inline bytes: {}", ecx.stats.inline_bytes);
|
|
println!(" attribute bytes: {}", ecx.stats.attr_bytes);
|
|
println!(" dep bytes: {}", ecx.stats.dep_bytes);
|
|
println!(" lang item bytes: {}", ecx.stats.lang_item_bytes);
|
|
println!(" native bytes: {}", ecx.stats.native_lib_bytes);
|
|
println!(" impl bytes: {}", ecx.stats.impl_bytes);
|
|
println!(" misc bytes: {}", ecx.stats.misc_bytes);
|
|
println!(" item bytes: {}", ecx.stats.item_bytes);
|
|
println!(" index bytes: {}", ecx.stats.index_bytes);
|
|
println!(" zero bytes: {}", ecx.stats.zero_bytes);
|
|
println!(" total bytes: {}", ecx.stats.total_bytes);
|
|
}
|
|
|
|
// Pad this, since something (LLVM, presumably) is cutting off the
|
|
// remaining % 4 bytes.
|
|
wr.write(&[0u8, 0u8, 0u8, 0u8]);
|
|
|
|
let writer_bytes: &mut ~[u8] = wr.inner_mut_ref();
|
|
|
|
metadata_encoding_version.to_owned() +
|
|
flate::deflate_bytes(*writer_bytes)
|
|
}
|
|
|
|
// Get the encoded string for a type
|
|
pub fn encoded_ty(tcx: ty::ctxt, t: ty::t) -> ~str {
|
|
let cx = @tyencode::ctxt {
|
|
diag: tcx.diag,
|
|
ds: def_to_str,
|
|
tcx: tcx,
|
|
abbrevs: tyencode::ac_no_abbrevs};
|
|
let wr = @mut MemWriter::new();
|
|
tyencode::enc_ty(wr, cx, t);
|
|
str::from_utf8_owned(wr.inner_ref().to_owned())
|
|
}
|