1619 lines
62 KiB
Rust
1619 lines
62 KiB
Rust
// Copyright 2012-2015 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.
|
|
|
|
#![allow(non_camel_case_types)]
|
|
// FIXME: remove this after snapshot, and Results are handled
|
|
#![allow(unused_must_use)]
|
|
|
|
use front::map as ast_map;
|
|
use rustc_front::hir;
|
|
use rustc_front::fold;
|
|
use rustc_front::fold::Folder;
|
|
|
|
use metadata::common as c;
|
|
use metadata::cstore as cstore;
|
|
use session::Session;
|
|
use metadata::decoder;
|
|
use metadata::encoder as e;
|
|
use metadata::inline::{InlinedItem, InlinedItemRef};
|
|
use metadata::tydecode;
|
|
use metadata::tydecode::{DefIdSource, NominalType, TypeWithId};
|
|
use metadata::tydecode::{RegionParameter, ClosureSource};
|
|
use metadata::tyencode;
|
|
use middle::cast;
|
|
use middle::check_const::ConstQualif;
|
|
use middle::def;
|
|
use middle::def_id::{DefId, LOCAL_CRATE};
|
|
use middle::privacy::{AllPublic, LastMod};
|
|
use middle::region;
|
|
use middle::subst;
|
|
use middle::subst::VecPerParamSpace;
|
|
use middle::ty::{self, Ty};
|
|
|
|
use syntax::{ast, ast_util, codemap};
|
|
use syntax::codemap::Span;
|
|
use syntax::ptr::P;
|
|
|
|
use std::cell::Cell;
|
|
use std::io::SeekFrom;
|
|
use std::io::prelude::*;
|
|
use std::fmt::Debug;
|
|
|
|
use rbml::reader;
|
|
use rbml::writer::Encoder;
|
|
use rbml;
|
|
use serialize;
|
|
use serialize::{Decodable, Decoder, DecoderHelpers, Encodable};
|
|
use serialize::EncoderHelpers;
|
|
|
|
#[cfg(test)] use std::io::Cursor;
|
|
#[cfg(test)] use syntax::parse;
|
|
#[cfg(test)] use rustc_front::print::pprust;
|
|
#[cfg(test)] use rustc_front::lowering::lower_item;
|
|
|
|
struct DecodeContext<'a, 'b, 'tcx: 'a> {
|
|
tcx: &'a ty::ctxt<'tcx>,
|
|
cdata: &'b cstore::crate_metadata,
|
|
from_id_range: ast_util::IdRange,
|
|
to_id_range: ast_util::IdRange,
|
|
// Cache the last used filemap for translating spans as an optimization.
|
|
last_filemap_index: Cell<usize>,
|
|
}
|
|
|
|
trait tr {
|
|
fn tr(&self, dcx: &DecodeContext) -> Self;
|
|
}
|
|
|
|
trait tr_intern {
|
|
fn tr_intern(&self, dcx: &DecodeContext) -> DefId;
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Top-level methods.
|
|
|
|
pub fn encode_inlined_item(ecx: &e::EncodeContext,
|
|
rbml_w: &mut Encoder,
|
|
ii: InlinedItemRef) {
|
|
let id = match ii {
|
|
InlinedItemRef::Item(i) => i.id,
|
|
InlinedItemRef::Foreign(i) => i.id,
|
|
InlinedItemRef::TraitItem(_, ti) => ti.id,
|
|
InlinedItemRef::ImplItem(_, ii) => ii.id,
|
|
};
|
|
debug!("> Encoding inlined item: {} ({:?})",
|
|
ecx.tcx.map.path_to_string(id),
|
|
rbml_w.writer.seek(SeekFrom::Current(0)));
|
|
|
|
// Folding could be avoided with a smarter encoder.
|
|
let ii = simplify_ast(ii);
|
|
let id_range = ii.compute_id_range();
|
|
|
|
rbml_w.start_tag(c::tag_ast as usize);
|
|
id_range.encode(rbml_w);
|
|
encode_ast(rbml_w, &ii);
|
|
encode_side_tables_for_ii(ecx, rbml_w, &ii);
|
|
rbml_w.end_tag();
|
|
|
|
debug!("< Encoded inlined fn: {} ({:?})",
|
|
ecx.tcx.map.path_to_string(id),
|
|
rbml_w.writer.seek(SeekFrom::Current(0)));
|
|
}
|
|
|
|
impl<'a, 'b, 'c, 'tcx> ast_map::FoldOps for &'a DecodeContext<'b, 'c, 'tcx> {
|
|
fn new_id(&self, id: ast::NodeId) -> ast::NodeId {
|
|
if id == ast::DUMMY_NODE_ID {
|
|
// Used by ast_map to map the NodeInlinedParent.
|
|
self.tcx.sess.next_node_id()
|
|
} else {
|
|
self.tr_id(id)
|
|
}
|
|
}
|
|
fn new_def_id(&self, def_id: DefId) -> DefId {
|
|
self.tr_def_id(def_id)
|
|
}
|
|
fn new_span(&self, span: Span) -> Span {
|
|
self.tr_span(span)
|
|
}
|
|
}
|
|
|
|
/// Decodes an item from its AST in the cdata's metadata and adds it to the
|
|
/// ast-map.
|
|
pub fn decode_inlined_item<'tcx>(cdata: &cstore::crate_metadata,
|
|
tcx: &ty::ctxt<'tcx>,
|
|
path: Vec<ast_map::PathElem>,
|
|
par_doc: rbml::Doc)
|
|
-> Result<&'tcx InlinedItem, Vec<ast_map::PathElem>> {
|
|
match par_doc.opt_child(c::tag_ast) {
|
|
None => Err(path),
|
|
Some(ast_doc) => {
|
|
let mut path_as_str = None;
|
|
debug!("> Decoding inlined fn: {:?}::?",
|
|
{
|
|
// Do an Option dance to use the path after it is moved below.
|
|
let s = ast_map::path_to_string(path.iter().cloned());
|
|
path_as_str = Some(s);
|
|
path_as_str.as_ref().map(|x| &x[..])
|
|
});
|
|
let mut ast_dsr = reader::Decoder::new(ast_doc);
|
|
let from_id_range = Decodable::decode(&mut ast_dsr).unwrap();
|
|
let to_id_range = reserve_id_range(&tcx.sess, from_id_range);
|
|
let dcx = &DecodeContext {
|
|
cdata: cdata,
|
|
tcx: tcx,
|
|
from_id_range: from_id_range,
|
|
to_id_range: to_id_range,
|
|
last_filemap_index: Cell::new(0)
|
|
};
|
|
let raw_ii = decode_ast(ast_doc);
|
|
let ii = ast_map::map_decoded_item(&dcx.tcx.map, path, raw_ii, dcx);
|
|
|
|
let ident = match *ii {
|
|
InlinedItem::Item(ref i) => i.ident,
|
|
InlinedItem::Foreign(ref i) => i.ident,
|
|
InlinedItem::TraitItem(_, ref ti) => ti.ident,
|
|
InlinedItem::ImplItem(_, ref ii) => ii.ident
|
|
};
|
|
debug!("Fn named: {}", ident);
|
|
debug!("< Decoded inlined fn: {}::{}",
|
|
path_as_str.unwrap(),
|
|
ident);
|
|
region::resolve_inlined_item(&tcx.sess, &tcx.region_maps, ii);
|
|
decode_side_tables(dcx, ast_doc);
|
|
match *ii {
|
|
InlinedItem::Item(ref i) => {
|
|
debug!(">>> DECODED ITEM >>>\n{}\n<<< DECODED ITEM <<<",
|
|
::rustc_front::print::pprust::item_to_string(&**i));
|
|
}
|
|
_ => { }
|
|
}
|
|
Ok(ii)
|
|
}
|
|
}
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Enumerating the IDs which appear in an AST
|
|
|
|
fn reserve_id_range(sess: &Session,
|
|
from_id_range: ast_util::IdRange) -> ast_util::IdRange {
|
|
// Handle the case of an empty range:
|
|
if from_id_range.empty() { return from_id_range; }
|
|
let cnt = from_id_range.max - from_id_range.min;
|
|
let to_id_min = sess.reserve_node_ids(cnt);
|
|
let to_id_max = to_id_min + cnt;
|
|
ast_util::IdRange { min: to_id_min, max: to_id_max }
|
|
}
|
|
|
|
impl<'a, 'b, 'tcx> DecodeContext<'a, 'b, 'tcx> {
|
|
/// Translates an internal id, meaning a node id that is known to refer to some part of the
|
|
/// item currently being inlined, such as a local variable or argument. All naked node-ids
|
|
/// that appear in types have this property, since if something might refer to an external item
|
|
/// we would use a def-id to allow for the possibility that the item resides in another crate.
|
|
pub fn tr_id(&self, id: ast::NodeId) -> ast::NodeId {
|
|
// from_id_range should be non-empty
|
|
assert!(!self.from_id_range.empty());
|
|
// Use wrapping arithmetic because otherwise it introduces control flow.
|
|
// Maybe we should just have the control flow? -- aatch
|
|
(id.wrapping_sub(self.from_id_range.min).wrapping_add(self.to_id_range.min))
|
|
}
|
|
|
|
/// Translates an EXTERNAL def-id, converting the crate number from the one used in the encoded
|
|
/// data to the current crate numbers.. By external, I mean that it be translated to a
|
|
/// reference to the item in its original crate, as opposed to being translated to a reference
|
|
/// to the inlined version of the item. This is typically, but not always, what you want,
|
|
/// because most def-ids refer to external things like types or other fns that may or may not
|
|
/// be inlined. Note that even when the inlined function is referencing itself recursively, we
|
|
/// would want `tr_def_id` for that reference--- conceptually the function calls the original,
|
|
/// non-inlined version, and trans deals with linking that recursive call to the inlined copy.
|
|
///
|
|
/// However, there are a *few* cases where def-ids are used but we know that the thing being
|
|
/// referenced is in fact *internal* to the item being inlined. In those cases, you should use
|
|
/// `tr_intern_def_id()` below.
|
|
pub fn tr_def_id(&self, did: DefId) -> DefId {
|
|
|
|
decoder::translate_def_id(self.cdata, did)
|
|
}
|
|
|
|
/// Translates an INTERNAL def-id, meaning a def-id that is
|
|
/// known to refer to some part of the item currently being
|
|
/// inlined. In that case, we want to convert the def-id to
|
|
/// refer to the current crate and to the new, inlined node-id.
|
|
pub fn tr_intern_def_id(&self, did: DefId) -> DefId {
|
|
assert_eq!(did.krate, LOCAL_CRATE);
|
|
DefId { krate: LOCAL_CRATE, node: self.tr_id(did.node) }
|
|
}
|
|
|
|
/// Translates a `Span` from an extern crate to the corresponding `Span`
|
|
/// within the local crate's codemap. `creader::import_codemap()` will
|
|
/// already have allocated any additionally needed FileMaps in the local
|
|
/// codemap as a side-effect of creating the crate_metadata's
|
|
/// `codemap_import_info`.
|
|
pub fn tr_span(&self, span: Span) -> Span {
|
|
let span = if span.lo > span.hi {
|
|
// Currently macro expansion sometimes produces invalid Span values
|
|
// where lo > hi. In order not to crash the compiler when trying to
|
|
// translate these values, let's transform them into something we
|
|
// can handle (and which will produce useful debug locations at
|
|
// least some of the time).
|
|
// This workaround is only necessary as long as macro expansion is
|
|
// not fixed. FIXME(#23480)
|
|
codemap::mk_sp(span.lo, span.lo)
|
|
} else {
|
|
span
|
|
};
|
|
|
|
let imported_filemaps = self.cdata.imported_filemaps(self.tcx.sess.codemap());
|
|
let filemap = {
|
|
// Optimize for the case that most spans within a translated item
|
|
// originate from the same filemap.
|
|
let last_filemap_index = self.last_filemap_index.get();
|
|
let last_filemap = &imported_filemaps[last_filemap_index];
|
|
|
|
if span.lo >= last_filemap.original_start_pos &&
|
|
span.lo <= last_filemap.original_end_pos &&
|
|
span.hi >= last_filemap.original_start_pos &&
|
|
span.hi <= last_filemap.original_end_pos {
|
|
last_filemap
|
|
} else {
|
|
let mut a = 0;
|
|
let mut b = imported_filemaps.len();
|
|
|
|
while b - a > 1 {
|
|
let m = (a + b) / 2;
|
|
if imported_filemaps[m].original_start_pos > span.lo {
|
|
b = m;
|
|
} else {
|
|
a = m;
|
|
}
|
|
}
|
|
|
|
self.last_filemap_index.set(a);
|
|
&imported_filemaps[a]
|
|
}
|
|
};
|
|
|
|
let lo = (span.lo - filemap.original_start_pos) +
|
|
filemap.translated_filemap.start_pos;
|
|
let hi = (span.hi - filemap.original_start_pos) +
|
|
filemap.translated_filemap.start_pos;
|
|
|
|
codemap::mk_sp(lo, hi)
|
|
}
|
|
}
|
|
|
|
impl tr_intern for DefId {
|
|
fn tr_intern(&self, dcx: &DecodeContext) -> DefId {
|
|
dcx.tr_intern_def_id(*self)
|
|
}
|
|
}
|
|
|
|
impl tr for DefId {
|
|
fn tr(&self, dcx: &DecodeContext) -> DefId {
|
|
dcx.tr_def_id(*self)
|
|
}
|
|
}
|
|
|
|
impl tr for Option<DefId> {
|
|
fn tr(&self, dcx: &DecodeContext) -> Option<DefId> {
|
|
self.map(|d| dcx.tr_def_id(d))
|
|
}
|
|
}
|
|
|
|
impl tr for Span {
|
|
fn tr(&self, dcx: &DecodeContext) -> Span {
|
|
dcx.tr_span(*self)
|
|
}
|
|
}
|
|
|
|
trait def_id_encoder_helpers {
|
|
fn emit_def_id(&mut self, did: DefId);
|
|
}
|
|
|
|
impl<S:serialize::Encoder> def_id_encoder_helpers for S
|
|
where <S as serialize::serialize::Encoder>::Error: Debug
|
|
{
|
|
fn emit_def_id(&mut self, did: DefId) {
|
|
did.encode(self).unwrap()
|
|
}
|
|
}
|
|
|
|
trait def_id_decoder_helpers {
|
|
fn read_def_id(&mut self, dcx: &DecodeContext) -> DefId;
|
|
fn read_def_id_nodcx(&mut self,
|
|
cdata: &cstore::crate_metadata) -> DefId;
|
|
}
|
|
|
|
impl<D:serialize::Decoder> def_id_decoder_helpers for D
|
|
where <D as serialize::serialize::Decoder>::Error: Debug
|
|
{
|
|
fn read_def_id(&mut self, dcx: &DecodeContext) -> DefId {
|
|
let did: DefId = Decodable::decode(self).unwrap();
|
|
did.tr(dcx)
|
|
}
|
|
|
|
fn read_def_id_nodcx(&mut self,
|
|
cdata: &cstore::crate_metadata)
|
|
-> DefId {
|
|
let did: DefId = Decodable::decode(self).unwrap();
|
|
decoder::translate_def_id(cdata, did)
|
|
}
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Encoding and decoding the AST itself
|
|
//
|
|
// When decoding, we have to renumber the AST so that the node ids that
|
|
// appear within are disjoint from the node ids in our existing ASTs.
|
|
// We also have to adjust the spans: for now we just insert a dummy span,
|
|
// but eventually we should add entries to the local codemap as required.
|
|
|
|
fn encode_ast(rbml_w: &mut Encoder, item: &InlinedItem) {
|
|
rbml_w.start_tag(c::tag_tree as usize);
|
|
item.encode(rbml_w);
|
|
rbml_w.end_tag();
|
|
}
|
|
|
|
struct NestedItemsDropper;
|
|
|
|
impl Folder for NestedItemsDropper {
|
|
fn fold_block(&mut self, blk: P<hir::Block>) -> P<hir::Block> {
|
|
blk.and_then(|hir::Block {id, stmts, expr, rules, span, ..}| {
|
|
let stmts_sans_items = stmts.into_iter().filter_map(|stmt| {
|
|
let use_stmt = match stmt.node {
|
|
hir::StmtExpr(_, _) | hir::StmtSemi(_, _) => true,
|
|
hir::StmtDecl(ref decl, _) => {
|
|
match decl.node {
|
|
hir::DeclLocal(_) => true,
|
|
hir::DeclItem(_) => false,
|
|
}
|
|
}
|
|
};
|
|
if use_stmt {
|
|
Some(stmt)
|
|
} else {
|
|
None
|
|
}
|
|
}).collect();
|
|
let blk_sans_items = P(hir::Block {
|
|
stmts: stmts_sans_items,
|
|
expr: expr,
|
|
id: id,
|
|
rules: rules,
|
|
span: span,
|
|
});
|
|
fold::noop_fold_block(blk_sans_items, self)
|
|
})
|
|
}
|
|
}
|
|
|
|
// Produces a simplified copy of the AST which does not include things
|
|
// that we do not need to or do not want to export. For example, we
|
|
// do not include any nested items: if these nested items are to be
|
|
// inlined, their AST will be exported separately (this only makes
|
|
// sense because, in Rust, nested items are independent except for
|
|
// their visibility).
|
|
//
|
|
// As it happens, trans relies on the fact that we do not export
|
|
// nested items, as otherwise it would get confused when translating
|
|
// inlined items.
|
|
fn simplify_ast(ii: InlinedItemRef) -> InlinedItem {
|
|
let mut fld = NestedItemsDropper;
|
|
|
|
match ii {
|
|
// HACK we're not dropping items.
|
|
InlinedItemRef::Item(i) => {
|
|
InlinedItem::Item(fold::noop_fold_item(P(i.clone()), &mut fld)
|
|
.expect_one("expected one item"))
|
|
}
|
|
InlinedItemRef::TraitItem(d, ti) => {
|
|
InlinedItem::TraitItem(d,
|
|
fold::noop_fold_trait_item(P(ti.clone()), &mut fld)
|
|
.expect_one("noop_fold_trait_item must produce \
|
|
exactly one trait item"))
|
|
}
|
|
InlinedItemRef::ImplItem(d, ii) => {
|
|
InlinedItem::ImplItem(d,
|
|
fold::noop_fold_impl_item(P(ii.clone()), &mut fld)
|
|
.expect_one("noop_fold_impl_item must produce \
|
|
exactly one impl item"))
|
|
}
|
|
InlinedItemRef::Foreign(i) => {
|
|
InlinedItem::Foreign(fold::noop_fold_foreign_item(P(i.clone()), &mut fld))
|
|
}
|
|
}
|
|
}
|
|
|
|
fn decode_ast(par_doc: rbml::Doc) -> InlinedItem {
|
|
let chi_doc = par_doc.get(c::tag_tree as usize);
|
|
let mut d = reader::Decoder::new(chi_doc);
|
|
Decodable::decode(&mut d).unwrap()
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Encoding and decoding of ast::def
|
|
|
|
fn decode_def(dcx: &DecodeContext, dsr: &mut reader::Decoder) -> def::Def {
|
|
let def: def::Def = Decodable::decode(dsr).unwrap();
|
|
def.tr(dcx)
|
|
}
|
|
|
|
impl tr for def::Def {
|
|
fn tr(&self, dcx: &DecodeContext) -> def::Def {
|
|
match *self {
|
|
def::DefFn(did, is_ctor) => def::DefFn(did.tr(dcx), is_ctor),
|
|
def::DefMethod(did) => def::DefMethod(did.tr(dcx)),
|
|
def::DefSelfTy(opt_did, impl_ids) => { def::DefSelfTy(opt_did.map(|did| did.tr(dcx)),
|
|
impl_ids.map(|(nid1, nid2)| {
|
|
(dcx.tr_id(nid1),
|
|
dcx.tr_id(nid2))
|
|
})) }
|
|
def::DefMod(did) => { def::DefMod(did.tr(dcx)) }
|
|
def::DefForeignMod(did) => { def::DefForeignMod(did.tr(dcx)) }
|
|
def::DefStatic(did, m) => { def::DefStatic(did.tr(dcx), m) }
|
|
def::DefConst(did) => { def::DefConst(did.tr(dcx)) }
|
|
def::DefAssociatedConst(did) => def::DefAssociatedConst(did.tr(dcx)),
|
|
def::DefLocal(nid) => { def::DefLocal(dcx.tr_id(nid)) }
|
|
def::DefVariant(e_did, v_did, is_s) => {
|
|
def::DefVariant(e_did.tr(dcx), v_did.tr(dcx), is_s)
|
|
},
|
|
def::DefTrait(did) => def::DefTrait(did.tr(dcx)),
|
|
def::DefTy(did, is_enum) => def::DefTy(did.tr(dcx), is_enum),
|
|
def::DefAssociatedTy(trait_did, did) =>
|
|
def::DefAssociatedTy(trait_did.tr(dcx), did.tr(dcx)),
|
|
def::DefPrimTy(p) => def::DefPrimTy(p),
|
|
def::DefTyParam(s, index, def_id, n) => def::DefTyParam(s, index, def_id.tr(dcx), n),
|
|
def::DefUse(did) => def::DefUse(did.tr(dcx)),
|
|
def::DefUpvar(nid1, nid2) => {
|
|
def::DefUpvar(dcx.tr_id(nid1), dcx.tr_id(nid2))
|
|
}
|
|
def::DefStruct(did) => def::DefStruct(did.tr(dcx)),
|
|
def::DefRegion(nid) => def::DefRegion(dcx.tr_id(nid)),
|
|
def::DefLabel(nid) => def::DefLabel(dcx.tr_id(nid))
|
|
}
|
|
}
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Encoding and decoding of freevar information
|
|
|
|
fn encode_freevar_entry(rbml_w: &mut Encoder, fv: &ty::Freevar) {
|
|
(*fv).encode(rbml_w).unwrap();
|
|
}
|
|
|
|
trait rbml_decoder_helper {
|
|
fn read_freevar_entry(&mut self, dcx: &DecodeContext)
|
|
-> ty::Freevar;
|
|
fn read_capture_mode(&mut self) -> hir::CaptureClause;
|
|
}
|
|
|
|
impl<'a> rbml_decoder_helper for reader::Decoder<'a> {
|
|
fn read_freevar_entry(&mut self, dcx: &DecodeContext)
|
|
-> ty::Freevar {
|
|
let fv: ty::Freevar = Decodable::decode(self).unwrap();
|
|
fv.tr(dcx)
|
|
}
|
|
|
|
fn read_capture_mode(&mut self) -> hir::CaptureClause {
|
|
let cm: hir::CaptureClause = Decodable::decode(self).unwrap();
|
|
cm
|
|
}
|
|
}
|
|
|
|
impl tr for ty::Freevar {
|
|
fn tr(&self, dcx: &DecodeContext) -> ty::Freevar {
|
|
ty::Freevar {
|
|
def: self.def.tr(dcx),
|
|
span: self.span.tr(dcx),
|
|
}
|
|
}
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Encoding and decoding of MethodCallee
|
|
|
|
trait read_method_callee_helper<'tcx> {
|
|
fn read_method_callee<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> (u32, ty::MethodCallee<'tcx>);
|
|
}
|
|
|
|
fn encode_method_callee<'a, 'tcx>(ecx: &e::EncodeContext<'a, 'tcx>,
|
|
rbml_w: &mut Encoder,
|
|
autoderef: u32,
|
|
method: &ty::MethodCallee<'tcx>) {
|
|
use serialize::Encoder;
|
|
|
|
rbml_w.emit_struct("MethodCallee", 4, |rbml_w| {
|
|
rbml_w.emit_struct_field("autoderef", 0, |rbml_w| {
|
|
autoderef.encode(rbml_w)
|
|
});
|
|
rbml_w.emit_struct_field("def_id", 1, |rbml_w| {
|
|
Ok(rbml_w.emit_def_id(method.def_id))
|
|
});
|
|
rbml_w.emit_struct_field("ty", 2, |rbml_w| {
|
|
Ok(rbml_w.emit_ty(ecx, method.ty))
|
|
});
|
|
rbml_w.emit_struct_field("substs", 3, |rbml_w| {
|
|
Ok(rbml_w.emit_substs(ecx, &method.substs))
|
|
})
|
|
}).unwrap();
|
|
}
|
|
|
|
impl<'a, 'tcx> read_method_callee_helper<'tcx> for reader::Decoder<'a> {
|
|
fn read_method_callee<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> (u32, ty::MethodCallee<'tcx>) {
|
|
|
|
self.read_struct("MethodCallee", 4, |this| {
|
|
let autoderef = this.read_struct_field("autoderef", 0,
|
|
Decodable::decode).unwrap();
|
|
Ok((autoderef, ty::MethodCallee {
|
|
def_id: this.read_struct_field("def_id", 1, |this| {
|
|
Ok(this.read_def_id(dcx))
|
|
}).unwrap(),
|
|
ty: this.read_struct_field("ty", 2, |this| {
|
|
Ok(this.read_ty(dcx))
|
|
}).unwrap(),
|
|
substs: this.read_struct_field("substs", 3, |this| {
|
|
Ok(dcx.tcx.mk_substs(this.read_substs(dcx)))
|
|
}).unwrap()
|
|
}))
|
|
}).unwrap()
|
|
}
|
|
}
|
|
|
|
pub fn encode_closure_kind(ebml_w: &mut Encoder, kind: ty::ClosureKind) {
|
|
kind.encode(ebml_w).unwrap();
|
|
}
|
|
|
|
pub fn encode_cast_kind(ebml_w: &mut Encoder, kind: cast::CastKind) {
|
|
kind.encode(ebml_w).unwrap();
|
|
}
|
|
|
|
pub trait vtable_decoder_helpers<'tcx> {
|
|
fn read_vec_per_param_space<T, F>(&mut self, f: F) -> VecPerParamSpace<T> where
|
|
F: FnMut(&mut Self) -> T;
|
|
}
|
|
|
|
impl<'tcx, 'a> vtable_decoder_helpers<'tcx> for reader::Decoder<'a> {
|
|
fn read_vec_per_param_space<T, F>(&mut self, mut f: F) -> VecPerParamSpace<T> where
|
|
F: FnMut(&mut reader::Decoder<'a>) -> T,
|
|
{
|
|
let types = self.read_to_vec(|this| Ok(f(this))).unwrap();
|
|
let selfs = self.read_to_vec(|this| Ok(f(this))).unwrap();
|
|
let fns = self.read_to_vec(|this| Ok(f(this))).unwrap();
|
|
VecPerParamSpace::new(types, selfs, fns)
|
|
}
|
|
}
|
|
|
|
// ___________________________________________________________________________
|
|
//
|
|
|
|
fn encode_vec_per_param_space<T, F>(rbml_w: &mut Encoder,
|
|
v: &subst::VecPerParamSpace<T>,
|
|
mut f: F) where
|
|
F: FnMut(&mut Encoder, &T),
|
|
{
|
|
for &space in &subst::ParamSpace::all() {
|
|
rbml_w.emit_from_vec(v.get_slice(space),
|
|
|rbml_w, n| Ok(f(rbml_w, n))).unwrap();
|
|
}
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Encoding and decoding the side tables
|
|
|
|
trait get_ty_str_ctxt<'tcx> {
|
|
fn ty_str_ctxt<'a>(&'a self) -> tyencode::ctxt<'a, 'tcx>;
|
|
}
|
|
|
|
impl<'a, 'tcx> get_ty_str_ctxt<'tcx> for e::EncodeContext<'a, 'tcx> {
|
|
fn ty_str_ctxt<'b>(&'b self) -> tyencode::ctxt<'b, 'tcx> {
|
|
tyencode::ctxt {
|
|
diag: self.tcx.sess.diagnostic(),
|
|
ds: e::def_to_string,
|
|
tcx: self.tcx,
|
|
abbrevs: &self.type_abbrevs
|
|
}
|
|
}
|
|
}
|
|
|
|
trait rbml_writer_helpers<'tcx> {
|
|
fn emit_closure_type<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
closure_type: &ty::ClosureTy<'tcx>);
|
|
fn emit_region(&mut self, ecx: &e::EncodeContext, r: ty::Region);
|
|
fn emit_ty<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>, ty: Ty<'tcx>);
|
|
fn emit_tys<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>, tys: &[Ty<'tcx>]);
|
|
fn emit_type_param_def<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
type_param_def: &ty::TypeParameterDef<'tcx>);
|
|
fn emit_region_param_def(&mut self, ecx: &e::EncodeContext,
|
|
region_param_def: &ty::RegionParameterDef);
|
|
fn emit_predicate<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
predicate: &ty::Predicate<'tcx>);
|
|
fn emit_trait_ref<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
ty: &ty::TraitRef<'tcx>);
|
|
fn emit_type_scheme<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
type_scheme: ty::TypeScheme<'tcx>);
|
|
fn emit_substs<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
substs: &subst::Substs<'tcx>);
|
|
fn emit_existential_bounds<'b>(&mut self, ecx: &e::EncodeContext<'b,'tcx>,
|
|
bounds: &ty::ExistentialBounds<'tcx>);
|
|
fn emit_builtin_bounds(&mut self, ecx: &e::EncodeContext, bounds: &ty::BuiltinBounds);
|
|
fn emit_upvar_capture(&mut self, ecx: &e::EncodeContext, capture: &ty::UpvarCapture);
|
|
fn emit_auto_adjustment<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
adj: &ty::AutoAdjustment<'tcx>);
|
|
fn emit_autoref<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
autoref: &ty::AutoRef<'tcx>);
|
|
fn emit_auto_deref_ref<'a>(&mut self, ecx: &e::EncodeContext<'a, 'tcx>,
|
|
auto_deref_ref: &ty::AutoDerefRef<'tcx>);
|
|
}
|
|
|
|
impl<'a, 'tcx> rbml_writer_helpers<'tcx> for Encoder<'a> {
|
|
fn emit_closure_type<'b>(&mut self,
|
|
ecx: &e::EncodeContext<'b, 'tcx>,
|
|
closure_type: &ty::ClosureTy<'tcx>) {
|
|
self.emit_opaque(|this| {
|
|
Ok(e::write_closure_type(ecx, this, closure_type))
|
|
});
|
|
}
|
|
|
|
fn emit_region(&mut self, ecx: &e::EncodeContext, r: ty::Region) {
|
|
self.emit_opaque(|this| Ok(e::write_region(ecx, this, r)));
|
|
}
|
|
|
|
fn emit_ty<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>, ty: Ty<'tcx>) {
|
|
self.emit_opaque(|this| Ok(e::write_type(ecx, this, ty)));
|
|
}
|
|
|
|
fn emit_tys<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>, tys: &[Ty<'tcx>]) {
|
|
self.emit_from_vec(tys, |this, ty| Ok(this.emit_ty(ecx, *ty)));
|
|
}
|
|
|
|
fn emit_trait_ref<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
trait_ref: &ty::TraitRef<'tcx>) {
|
|
self.emit_opaque(|this| Ok(e::write_trait_ref(ecx, this, trait_ref)));
|
|
}
|
|
|
|
fn emit_type_param_def<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
type_param_def: &ty::TypeParameterDef<'tcx>) {
|
|
self.emit_opaque(|this| {
|
|
Ok(tyencode::enc_type_param_def(this,
|
|
&ecx.ty_str_ctxt(),
|
|
type_param_def))
|
|
});
|
|
}
|
|
fn emit_region_param_def(&mut self, ecx: &e::EncodeContext,
|
|
region_param_def: &ty::RegionParameterDef) {
|
|
self.emit_opaque(|this| {
|
|
Ok(tyencode::enc_region_param_def(this,
|
|
&ecx.ty_str_ctxt(),
|
|
region_param_def))
|
|
});
|
|
}
|
|
fn emit_predicate<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
predicate: &ty::Predicate<'tcx>) {
|
|
self.emit_opaque(|this| {
|
|
Ok(tyencode::enc_predicate(this,
|
|
&ecx.ty_str_ctxt(),
|
|
predicate))
|
|
});
|
|
}
|
|
|
|
fn emit_type_scheme<'b>(&mut self,
|
|
ecx: &e::EncodeContext<'b, 'tcx>,
|
|
type_scheme: ty::TypeScheme<'tcx>) {
|
|
use serialize::Encoder;
|
|
|
|
self.emit_struct("TypeScheme", 2, |this| {
|
|
this.emit_struct_field("generics", 0, |this| {
|
|
this.emit_struct("Generics", 2, |this| {
|
|
this.emit_struct_field("types", 0, |this| {
|
|
Ok(encode_vec_per_param_space(
|
|
this, &type_scheme.generics.types,
|
|
|this, def| this.emit_type_param_def(ecx, def)))
|
|
});
|
|
this.emit_struct_field("regions", 1, |this| {
|
|
Ok(encode_vec_per_param_space(
|
|
this, &type_scheme.generics.regions,
|
|
|this, def| this.emit_region_param_def(ecx, def)))
|
|
})
|
|
})
|
|
});
|
|
this.emit_struct_field("ty", 1, |this| {
|
|
Ok(this.emit_ty(ecx, type_scheme.ty))
|
|
})
|
|
});
|
|
}
|
|
|
|
fn emit_existential_bounds<'b>(&mut self, ecx: &e::EncodeContext<'b,'tcx>,
|
|
bounds: &ty::ExistentialBounds<'tcx>) {
|
|
self.emit_opaque(|this| Ok(tyencode::enc_existential_bounds(this,
|
|
&ecx.ty_str_ctxt(),
|
|
bounds)));
|
|
}
|
|
|
|
fn emit_builtin_bounds(&mut self, ecx: &e::EncodeContext, bounds: &ty::BuiltinBounds) {
|
|
self.emit_opaque(|this| Ok(tyencode::enc_builtin_bounds(this,
|
|
&ecx.ty_str_ctxt(),
|
|
bounds)));
|
|
}
|
|
|
|
fn emit_upvar_capture(&mut self, ecx: &e::EncodeContext, capture: &ty::UpvarCapture) {
|
|
use serialize::Encoder;
|
|
|
|
self.emit_enum("UpvarCapture", |this| {
|
|
match *capture {
|
|
ty::UpvarCapture::ByValue => {
|
|
this.emit_enum_variant("ByValue", 1, 0, |_| Ok(()))
|
|
}
|
|
ty::UpvarCapture::ByRef(ty::UpvarBorrow { kind, region }) => {
|
|
this.emit_enum_variant("ByRef", 2, 0, |this| {
|
|
this.emit_enum_variant_arg(0,
|
|
|this| kind.encode(this));
|
|
this.emit_enum_variant_arg(1,
|
|
|this| Ok(this.emit_region(ecx, region)))
|
|
})
|
|
}
|
|
}
|
|
}).unwrap()
|
|
}
|
|
|
|
fn emit_substs<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
substs: &subst::Substs<'tcx>) {
|
|
self.emit_opaque(|this| Ok(tyencode::enc_substs(this,
|
|
&ecx.ty_str_ctxt(),
|
|
substs)));
|
|
}
|
|
|
|
fn emit_auto_adjustment<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
adj: &ty::AutoAdjustment<'tcx>) {
|
|
use serialize::Encoder;
|
|
|
|
self.emit_enum("AutoAdjustment", |this| {
|
|
match *adj {
|
|
ty::AdjustReifyFnPointer=> {
|
|
this.emit_enum_variant("AdjustReifyFnPointer", 1, 0, |_| Ok(()))
|
|
}
|
|
|
|
ty::AdjustUnsafeFnPointer => {
|
|
this.emit_enum_variant("AdjustUnsafeFnPointer", 2, 0, |_| {
|
|
Ok(())
|
|
})
|
|
}
|
|
|
|
ty::AdjustDerefRef(ref auto_deref_ref) => {
|
|
this.emit_enum_variant("AdjustDerefRef", 3, 2, |this| {
|
|
this.emit_enum_variant_arg(0,
|
|
|this| Ok(this.emit_auto_deref_ref(ecx, auto_deref_ref)))
|
|
})
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
fn emit_autoref<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
autoref: &ty::AutoRef<'tcx>) {
|
|
use serialize::Encoder;
|
|
|
|
self.emit_enum("AutoRef", |this| {
|
|
match autoref {
|
|
&ty::AutoPtr(r, m) => {
|
|
this.emit_enum_variant("AutoPtr", 0, 2, |this| {
|
|
this.emit_enum_variant_arg(0,
|
|
|this| Ok(this.emit_region(ecx, *r)));
|
|
this.emit_enum_variant_arg(1, |this| m.encode(this))
|
|
})
|
|
}
|
|
&ty::AutoUnsafe(m) => {
|
|
this.emit_enum_variant("AutoUnsafe", 1, 1, |this| {
|
|
this.emit_enum_variant_arg(0, |this| m.encode(this))
|
|
})
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
fn emit_auto_deref_ref<'b>(&mut self, ecx: &e::EncodeContext<'b, 'tcx>,
|
|
auto_deref_ref: &ty::AutoDerefRef<'tcx>) {
|
|
use serialize::Encoder;
|
|
|
|
self.emit_struct("AutoDerefRef", 2, |this| {
|
|
this.emit_struct_field("autoderefs", 0, |this| auto_deref_ref.autoderefs.encode(this));
|
|
|
|
this.emit_struct_field("autoref", 1, |this| {
|
|
this.emit_option(|this| {
|
|
match auto_deref_ref.autoref {
|
|
None => this.emit_option_none(),
|
|
Some(ref a) => this.emit_option_some(|this| Ok(this.emit_autoref(ecx, a))),
|
|
}
|
|
})
|
|
});
|
|
|
|
this.emit_struct_field("unsize", 2, |this| {
|
|
this.emit_option(|this| {
|
|
match auto_deref_ref.unsize {
|
|
None => this.emit_option_none(),
|
|
Some(target) => this.emit_option_some(|this| {
|
|
Ok(this.emit_ty(ecx, target))
|
|
})
|
|
}
|
|
})
|
|
})
|
|
});
|
|
}
|
|
}
|
|
|
|
trait write_tag_and_id {
|
|
fn tag<F>(&mut self, tag_id: c::astencode_tag, f: F) where F: FnOnce(&mut Self);
|
|
fn id(&mut self, id: ast::NodeId);
|
|
}
|
|
|
|
impl<'a> write_tag_and_id for Encoder<'a> {
|
|
fn tag<F>(&mut self,
|
|
tag_id: c::astencode_tag,
|
|
f: F) where
|
|
F: FnOnce(&mut Encoder<'a>),
|
|
{
|
|
self.start_tag(tag_id as usize);
|
|
f(self);
|
|
self.end_tag();
|
|
}
|
|
|
|
fn id(&mut self, id: ast::NodeId) {
|
|
id.encode(self).unwrap();
|
|
}
|
|
}
|
|
|
|
struct SideTableEncodingIdVisitor<'a, 'b:'a, 'c:'a, 'tcx:'c> {
|
|
ecx: &'a e::EncodeContext<'c, 'tcx>,
|
|
rbml_w: &'a mut Encoder<'b>,
|
|
}
|
|
|
|
impl<'a, 'b, 'c, 'tcx> ast_util::IdVisitingOperation for
|
|
SideTableEncodingIdVisitor<'a, 'b, 'c, 'tcx> {
|
|
fn visit_id(&mut self, id: ast::NodeId) {
|
|
encode_side_tables_for_id(self.ecx, self.rbml_w, id)
|
|
}
|
|
}
|
|
|
|
fn encode_side_tables_for_ii(ecx: &e::EncodeContext,
|
|
rbml_w: &mut Encoder,
|
|
ii: &InlinedItem) {
|
|
rbml_w.start_tag(c::tag_table as usize);
|
|
ii.visit_ids(&mut SideTableEncodingIdVisitor {
|
|
ecx: ecx,
|
|
rbml_w: rbml_w
|
|
});
|
|
rbml_w.end_tag();
|
|
}
|
|
|
|
fn encode_side_tables_for_id(ecx: &e::EncodeContext,
|
|
rbml_w: &mut Encoder,
|
|
id: ast::NodeId) {
|
|
let tcx = ecx.tcx;
|
|
|
|
debug!("Encoding side tables for id {}", id);
|
|
|
|
if let Some(def) = tcx.def_map.borrow().get(&id).map(|d| d.full_def()) {
|
|
rbml_w.tag(c::tag_table_def, |rbml_w| {
|
|
rbml_w.id(id);
|
|
def.encode(rbml_w).unwrap();
|
|
})
|
|
}
|
|
|
|
if let Some(ty) = tcx.node_types().get(&id) {
|
|
rbml_w.tag(c::tag_table_node_type, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_ty(ecx, *ty);
|
|
})
|
|
}
|
|
|
|
if let Some(item_substs) = tcx.tables.borrow().item_substs.get(&id) {
|
|
rbml_w.tag(c::tag_table_item_subst, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_substs(ecx, &item_substs.substs);
|
|
})
|
|
}
|
|
|
|
if let Some(fv) = tcx.freevars.borrow().get(&id) {
|
|
rbml_w.tag(c::tag_table_freevars, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_from_vec(fv, |rbml_w, fv_entry| {
|
|
Ok(encode_freevar_entry(rbml_w, fv_entry))
|
|
});
|
|
});
|
|
|
|
for freevar in fv {
|
|
rbml_w.tag(c::tag_table_upvar_capture_map, |rbml_w| {
|
|
rbml_w.id(id);
|
|
|
|
let var_id = freevar.def.def_id().node;
|
|
let upvar_id = ty::UpvarId {
|
|
var_id: var_id,
|
|
closure_expr_id: id
|
|
};
|
|
let upvar_capture = tcx.tables
|
|
.borrow()
|
|
.upvar_capture_map
|
|
.get(&upvar_id)
|
|
.unwrap()
|
|
.clone();
|
|
var_id.encode(rbml_w);
|
|
rbml_w.emit_upvar_capture(ecx, &upvar_capture);
|
|
})
|
|
}
|
|
}
|
|
|
|
let lid = DefId { krate: LOCAL_CRATE, node: id };
|
|
if let Some(type_scheme) = tcx.tcache.borrow().get(&lid) {
|
|
rbml_w.tag(c::tag_table_tcache, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_type_scheme(ecx, type_scheme.clone());
|
|
})
|
|
}
|
|
|
|
if let Some(type_param_def) = tcx.ty_param_defs.borrow().get(&id) {
|
|
rbml_w.tag(c::tag_table_param_defs, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_type_param_def(ecx, type_param_def)
|
|
})
|
|
}
|
|
|
|
let method_call = ty::MethodCall::expr(id);
|
|
if let Some(method) = tcx.tables.borrow().method_map.get(&method_call) {
|
|
rbml_w.tag(c::tag_table_method_map, |rbml_w| {
|
|
rbml_w.id(id);
|
|
encode_method_callee(ecx, rbml_w, method_call.autoderef, method)
|
|
})
|
|
}
|
|
|
|
if let Some(adjustment) = tcx.tables.borrow().adjustments.get(&id) {
|
|
match *adjustment {
|
|
ty::AdjustDerefRef(ref adj) => {
|
|
for autoderef in 0..adj.autoderefs {
|
|
let method_call = ty::MethodCall::autoderef(id, autoderef as u32);
|
|
if let Some(method) = tcx.tables.borrow().method_map.get(&method_call) {
|
|
rbml_w.tag(c::tag_table_method_map, |rbml_w| {
|
|
rbml_w.id(id);
|
|
encode_method_callee(ecx, rbml_w,
|
|
method_call.autoderef, method)
|
|
})
|
|
}
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
|
|
rbml_w.tag(c::tag_table_adjustments, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_auto_adjustment(ecx, adjustment);
|
|
})
|
|
}
|
|
|
|
if let Some(closure_type) = tcx.tables.borrow().closure_tys.get(&DefId::local(id)) {
|
|
rbml_w.tag(c::tag_table_closure_tys, |rbml_w| {
|
|
rbml_w.id(id);
|
|
rbml_w.emit_closure_type(ecx, closure_type);
|
|
})
|
|
}
|
|
|
|
if let Some(closure_kind) = tcx.tables.borrow().closure_kinds.get(&DefId::local(id)) {
|
|
rbml_w.tag(c::tag_table_closure_kinds, |rbml_w| {
|
|
rbml_w.id(id);
|
|
encode_closure_kind(rbml_w, *closure_kind)
|
|
})
|
|
}
|
|
|
|
if let Some(cast_kind) = tcx.cast_kinds.borrow().get(&id) {
|
|
rbml_w.tag(c::tag_table_cast_kinds, |rbml_w| {
|
|
rbml_w.id(id);
|
|
encode_cast_kind(rbml_w, *cast_kind)
|
|
})
|
|
}
|
|
|
|
if let Some(qualif) = tcx.const_qualif_map.borrow().get(&id) {
|
|
rbml_w.tag(c::tag_table_const_qualif, |rbml_w| {
|
|
rbml_w.id(id);
|
|
qualif.encode(rbml_w).unwrap()
|
|
})
|
|
}
|
|
}
|
|
|
|
trait doc_decoder_helpers: Sized {
|
|
fn as_int(&self) -> isize;
|
|
fn opt_child(&self, tag: c::astencode_tag) -> Option<Self>;
|
|
}
|
|
|
|
impl<'a> doc_decoder_helpers for rbml::Doc<'a> {
|
|
fn as_int(&self) -> isize { reader::doc_as_u64(*self) as isize }
|
|
fn opt_child(&self, tag: c::astencode_tag) -> Option<rbml::Doc<'a>> {
|
|
reader::maybe_get_doc(*self, tag as usize)
|
|
}
|
|
}
|
|
|
|
trait rbml_decoder_decoder_helpers<'tcx> {
|
|
fn read_ty_encoded<'a, 'b, F, R>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>,
|
|
f: F) -> R
|
|
where F: for<'x> FnOnce(&mut tydecode::TyDecoder<'x, 'tcx>) -> R;
|
|
|
|
fn read_region(&mut self, dcx: &DecodeContext) -> ty::Region;
|
|
fn read_ty<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>) -> Ty<'tcx>;
|
|
fn read_tys<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>) -> Vec<Ty<'tcx>>;
|
|
fn read_trait_ref<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::TraitRef<'tcx>;
|
|
fn read_poly_trait_ref<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::PolyTraitRef<'tcx>;
|
|
fn read_type_param_def<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::TypeParameterDef<'tcx>;
|
|
fn read_region_param_def(&mut self, dcx: &DecodeContext)
|
|
-> ty::RegionParameterDef;
|
|
fn read_predicate<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::Predicate<'tcx>;
|
|
fn read_type_scheme<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::TypeScheme<'tcx>;
|
|
fn read_existential_bounds<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::ExistentialBounds<'tcx>;
|
|
fn read_substs<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> subst::Substs<'tcx>;
|
|
fn read_upvar_capture(&mut self, dcx: &DecodeContext)
|
|
-> ty::UpvarCapture;
|
|
fn read_auto_adjustment<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::AutoAdjustment<'tcx>;
|
|
fn read_cast_kind<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> cast::CastKind;
|
|
fn read_closure_kind<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::ClosureKind;
|
|
fn read_closure_ty<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::ClosureTy<'tcx>;
|
|
fn read_auto_deref_ref<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::AutoDerefRef<'tcx>;
|
|
fn read_autoref<'a, 'b>(&mut self, dcx: &DecodeContext<'a, 'b, 'tcx>)
|
|
-> ty::AutoRef<'tcx>;
|
|
fn convert_def_id(&mut self,
|
|
dcx: &DecodeContext,
|
|
source: DefIdSource,
|
|
did: DefId)
|
|
-> DefId;
|
|
|
|
// Versions of the type reading functions that don't need the full
|
|
// DecodeContext.
|
|
fn read_ty_nodcx(&mut self,
|
|
tcx: &ty::ctxt<'tcx>, cdata: &cstore::crate_metadata) -> Ty<'tcx>;
|
|
fn read_tys_nodcx(&mut self,
|
|
tcx: &ty::ctxt<'tcx>,
|
|
cdata: &cstore::crate_metadata) -> Vec<Ty<'tcx>>;
|
|
fn read_substs_nodcx(&mut self, tcx: &ty::ctxt<'tcx>,
|
|
cdata: &cstore::crate_metadata)
|
|
-> subst::Substs<'tcx>;
|
|
}
|
|
|
|
impl<'a, 'tcx> rbml_decoder_decoder_helpers<'tcx> for reader::Decoder<'a> {
|
|
fn read_ty_nodcx(&mut self,
|
|
tcx: &ty::ctxt<'tcx>,
|
|
cdata: &cstore::crate_metadata)
|
|
-> Ty<'tcx> {
|
|
self.read_opaque(|_, doc| {
|
|
Ok(
|
|
tydecode::TyDecoder::with_doc(tcx, cdata.cnum, doc,
|
|
&mut |_, id| decoder::translate_def_id(cdata, id))
|
|
.parse_ty())
|
|
}).unwrap()
|
|
}
|
|
|
|
fn read_tys_nodcx(&mut self,
|
|
tcx: &ty::ctxt<'tcx>,
|
|
cdata: &cstore::crate_metadata) -> Vec<Ty<'tcx>> {
|
|
self.read_to_vec(|this| Ok(this.read_ty_nodcx(tcx, cdata)) )
|
|
.unwrap()
|
|
.into_iter()
|
|
.collect()
|
|
}
|
|
|
|
fn read_substs_nodcx(&mut self,
|
|
tcx: &ty::ctxt<'tcx>,
|
|
cdata: &cstore::crate_metadata)
|
|
-> subst::Substs<'tcx>
|
|
{
|
|
self.read_opaque(|_, doc| {
|
|
Ok(
|
|
tydecode::TyDecoder::with_doc(tcx, cdata.cnum, doc,
|
|
&mut |_, id| decoder::translate_def_id(cdata, id))
|
|
.parse_substs())
|
|
}).unwrap()
|
|
}
|
|
|
|
fn read_ty_encoded<'b, 'c, F, R>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>, op: F) -> R
|
|
where F: for<'x> FnOnce(&mut tydecode::TyDecoder<'x,'tcx>) -> R
|
|
{
|
|
return self.read_opaque(|this, doc| {
|
|
debug!("read_ty_encoded({})", type_string(doc));
|
|
Ok(op(
|
|
&mut tydecode::TyDecoder::with_doc(
|
|
dcx.tcx, dcx.cdata.cnum, doc,
|
|
&mut |s, a| this.convert_def_id(dcx, s, a))))
|
|
}).unwrap();
|
|
|
|
fn type_string(doc: rbml::Doc) -> String {
|
|
let mut str = String::new();
|
|
for i in doc.start..doc.end {
|
|
str.push(doc.data[i] as char);
|
|
}
|
|
str
|
|
}
|
|
}
|
|
fn read_region(&mut self, dcx: &DecodeContext) -> ty::Region {
|
|
// Note: regions types embed local node ids. In principle, we
|
|
// should translate these node ids into the new decode
|
|
// context. However, we do not bother, because region types
|
|
// are not used during trans. This also applies to read_ty.
|
|
return self.read_ty_encoded(dcx, |decoder| decoder.parse_region());
|
|
}
|
|
fn read_ty<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>) -> Ty<'tcx> {
|
|
return self.read_ty_encoded(dcx, |decoder| decoder.parse_ty());
|
|
}
|
|
|
|
fn read_tys<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> Vec<Ty<'tcx>> {
|
|
self.read_to_vec(|this| Ok(this.read_ty(dcx))).unwrap().into_iter().collect()
|
|
}
|
|
|
|
fn read_trait_ref<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::TraitRef<'tcx> {
|
|
self.read_ty_encoded(dcx, |decoder| decoder.parse_trait_ref())
|
|
}
|
|
|
|
fn read_poly_trait_ref<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::PolyTraitRef<'tcx> {
|
|
ty::Binder(self.read_ty_encoded(dcx, |decoder| decoder.parse_trait_ref()))
|
|
}
|
|
|
|
fn read_type_param_def<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::TypeParameterDef<'tcx> {
|
|
self.read_ty_encoded(dcx, |decoder| decoder.parse_type_param_def())
|
|
}
|
|
fn read_region_param_def(&mut self, dcx: &DecodeContext)
|
|
-> ty::RegionParameterDef {
|
|
self.read_ty_encoded(dcx, |decoder| decoder.parse_region_param_def())
|
|
}
|
|
fn read_predicate<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::Predicate<'tcx>
|
|
{
|
|
self.read_ty_encoded(dcx, |decoder| decoder.parse_predicate())
|
|
}
|
|
|
|
fn read_type_scheme<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::TypeScheme<'tcx> {
|
|
self.read_struct("TypeScheme", 3, |this| {
|
|
Ok(ty::TypeScheme {
|
|
generics: this.read_struct_field("generics", 0, |this| {
|
|
this.read_struct("Generics", 2, |this| {
|
|
Ok(ty::Generics {
|
|
types:
|
|
this.read_struct_field("types", 0, |this| {
|
|
Ok(this.read_vec_per_param_space(
|
|
|this| this.read_type_param_def(dcx)))
|
|
}).unwrap(),
|
|
|
|
regions:
|
|
this.read_struct_field("regions", 1, |this| {
|
|
Ok(this.read_vec_per_param_space(
|
|
|this| this.read_region_param_def(dcx)))
|
|
}).unwrap(),
|
|
})
|
|
})
|
|
}).unwrap(),
|
|
ty: this.read_struct_field("ty", 1, |this| {
|
|
Ok(this.read_ty(dcx))
|
|
}).unwrap()
|
|
})
|
|
}).unwrap()
|
|
}
|
|
|
|
fn read_existential_bounds<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::ExistentialBounds<'tcx>
|
|
{
|
|
self.read_ty_encoded(dcx, |decoder| decoder.parse_existential_bounds())
|
|
}
|
|
|
|
fn read_substs<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> subst::Substs<'tcx> {
|
|
self.read_opaque(|this, doc| {
|
|
Ok(tydecode::TyDecoder::with_doc(dcx.tcx, dcx.cdata.cnum, doc,
|
|
&mut |s, a| this.convert_def_id(dcx, s, a))
|
|
.parse_substs())
|
|
}).unwrap()
|
|
}
|
|
fn read_upvar_capture(&mut self, dcx: &DecodeContext) -> ty::UpvarCapture {
|
|
self.read_enum("UpvarCapture", |this| {
|
|
let variants = ["ByValue", "ByRef"];
|
|
this.read_enum_variant(&variants, |this, i| {
|
|
Ok(match i {
|
|
1 => ty::UpvarCapture::ByValue,
|
|
2 => ty::UpvarCapture::ByRef(ty::UpvarBorrow {
|
|
kind: this.read_enum_variant_arg(0,
|
|
|this| Decodable::decode(this)).unwrap(),
|
|
region: this.read_enum_variant_arg(1,
|
|
|this| Ok(this.read_region(dcx))).unwrap()
|
|
}),
|
|
_ => panic!("bad enum variant for ty::UpvarCapture")
|
|
})
|
|
})
|
|
}).unwrap()
|
|
}
|
|
fn read_auto_adjustment<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::AutoAdjustment<'tcx> {
|
|
self.read_enum("AutoAdjustment", |this| {
|
|
let variants = ["AdjustReifyFnPointer", "AdjustUnsafeFnPointer", "AdjustDerefRef"];
|
|
this.read_enum_variant(&variants, |this, i| {
|
|
Ok(match i {
|
|
1 => ty::AdjustReifyFnPointer,
|
|
2 => ty::AdjustUnsafeFnPointer,
|
|
3 => {
|
|
let auto_deref_ref: ty::AutoDerefRef =
|
|
this.read_enum_variant_arg(0,
|
|
|this| Ok(this.read_auto_deref_ref(dcx))).unwrap();
|
|
|
|
ty::AdjustDerefRef(auto_deref_ref)
|
|
}
|
|
_ => panic!("bad enum variant for ty::AutoAdjustment")
|
|
})
|
|
})
|
|
}).unwrap()
|
|
}
|
|
|
|
fn read_auto_deref_ref<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::AutoDerefRef<'tcx> {
|
|
self.read_struct("AutoDerefRef", 2, |this| {
|
|
Ok(ty::AutoDerefRef {
|
|
autoderefs: this.read_struct_field("autoderefs", 0, |this| {
|
|
Decodable::decode(this)
|
|
}).unwrap(),
|
|
autoref: this.read_struct_field("autoref", 1, |this| {
|
|
this.read_option(|this, b| {
|
|
if b {
|
|
Ok(Some(this.read_autoref(dcx)))
|
|
} else {
|
|
Ok(None)
|
|
}
|
|
})
|
|
}).unwrap(),
|
|
unsize: this.read_struct_field("unsize", 2, |this| {
|
|
this.read_option(|this, b| {
|
|
if b {
|
|
Ok(Some(this.read_ty(dcx)))
|
|
} else {
|
|
Ok(None)
|
|
}
|
|
})
|
|
}).unwrap(),
|
|
})
|
|
}).unwrap()
|
|
}
|
|
|
|
fn read_autoref<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::AutoRef<'tcx> {
|
|
self.read_enum("AutoRef", |this| {
|
|
let variants = ["AutoPtr", "AutoUnsafe"];
|
|
this.read_enum_variant(&variants, |this, i| {
|
|
Ok(match i {
|
|
0 => {
|
|
let r: ty::Region =
|
|
this.read_enum_variant_arg(0, |this| {
|
|
Ok(this.read_region(dcx))
|
|
}).unwrap();
|
|
let m: hir::Mutability =
|
|
this.read_enum_variant_arg(1, |this| {
|
|
Decodable::decode(this)
|
|
}).unwrap();
|
|
|
|
ty::AutoPtr(dcx.tcx.mk_region(r), m)
|
|
}
|
|
1 => {
|
|
let m: hir::Mutability =
|
|
this.read_enum_variant_arg(0, |this| Decodable::decode(this)).unwrap();
|
|
|
|
ty::AutoUnsafe(m)
|
|
}
|
|
_ => panic!("bad enum variant for ty::AutoRef")
|
|
})
|
|
})
|
|
}).unwrap()
|
|
}
|
|
|
|
fn read_cast_kind<'b, 'c>(&mut self, _dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> cast::CastKind
|
|
{
|
|
Decodable::decode(self).unwrap()
|
|
}
|
|
|
|
fn read_closure_kind<'b, 'c>(&mut self, _dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::ClosureKind
|
|
{
|
|
Decodable::decode(self).unwrap()
|
|
}
|
|
|
|
fn read_closure_ty<'b, 'c>(&mut self, dcx: &DecodeContext<'b, 'c, 'tcx>)
|
|
-> ty::ClosureTy<'tcx>
|
|
{
|
|
self.read_ty_encoded(dcx, |decoder| decoder.parse_closure_ty())
|
|
}
|
|
|
|
/// Converts a def-id that appears in a type. The correct
|
|
/// translation will depend on what kind of def-id this is.
|
|
/// This is a subtle point: type definitions are not
|
|
/// inlined into the current crate, so if the def-id names
|
|
/// a nominal type or type alias, then it should be
|
|
/// translated to refer to the source crate.
|
|
///
|
|
/// However, *type parameters* are cloned along with the function
|
|
/// they are attached to. So we should translate those def-ids
|
|
/// to refer to the new, cloned copy of the type parameter.
|
|
/// We only see references to free type parameters in the body of
|
|
/// an inlined function. In such cases, we need the def-id to
|
|
/// be a local id so that the TypeContents code is able to lookup
|
|
/// the relevant info in the ty_param_defs table.
|
|
///
|
|
/// *Region parameters*, unfortunately, are another kettle of fish.
|
|
/// In such cases, def_id's can appear in types to distinguish
|
|
/// shadowed bound regions and so forth. It doesn't actually
|
|
/// matter so much what we do to these, since regions are erased
|
|
/// at trans time, but it's good to keep them consistent just in
|
|
/// case. We translate them with `tr_def_id()` which will map
|
|
/// the crate numbers back to the original source crate.
|
|
///
|
|
/// Scopes will end up as being totally bogus. This can actually
|
|
/// be fixed though.
|
|
///
|
|
/// Unboxed closures are cloned along with the function being
|
|
/// inlined, and all side tables use interned node IDs, so we
|
|
/// translate their def IDs accordingly.
|
|
///
|
|
/// It'd be really nice to refactor the type repr to not include
|
|
/// def-ids so that all these distinctions were unnecessary.
|
|
fn convert_def_id(&mut self,
|
|
dcx: &DecodeContext,
|
|
source: tydecode::DefIdSource,
|
|
did: DefId)
|
|
-> DefId {
|
|
let r = match source {
|
|
NominalType | TypeWithId | RegionParameter => dcx.tr_def_id(did),
|
|
ClosureSource => dcx.tr_intern_def_id(did)
|
|
};
|
|
debug!("convert_def_id(source={:?}, did={:?})={:?}", source, did, r);
|
|
return r;
|
|
}
|
|
}
|
|
|
|
fn decode_side_tables(dcx: &DecodeContext,
|
|
ast_doc: rbml::Doc) {
|
|
let tbl_doc = ast_doc.get(c::tag_table as usize);
|
|
for (tag, entry_doc) in reader::docs(tbl_doc) {
|
|
let mut entry_dsr = reader::Decoder::new(entry_doc);
|
|
let id0: ast::NodeId = Decodable::decode(&mut entry_dsr).unwrap();
|
|
let id = dcx.tr_id(id0);
|
|
|
|
debug!(">> Side table document with tag 0x{:x} \
|
|
found for id {} (orig {})",
|
|
tag, id, id0);
|
|
let tag = tag as u32;
|
|
let decoded_tag: Option<c::astencode_tag> = c::astencode_tag::from_u32(tag);
|
|
match decoded_tag {
|
|
None => {
|
|
dcx.tcx.sess.bug(
|
|
&format!("unknown tag found in side tables: {:x}",
|
|
tag));
|
|
}
|
|
Some(value) => {
|
|
let val_dsr = &mut entry_dsr;
|
|
|
|
match value {
|
|
c::tag_table_def => {
|
|
let def = decode_def(dcx, val_dsr);
|
|
dcx.tcx.def_map.borrow_mut().insert(id, def::PathResolution {
|
|
base_def: def,
|
|
// This doesn't matter cross-crate.
|
|
last_private: LastMod(AllPublic),
|
|
depth: 0
|
|
});
|
|
}
|
|
c::tag_table_node_type => {
|
|
let ty = val_dsr.read_ty(dcx);
|
|
debug!("inserting ty for node {}: {:?}",
|
|
id, ty);
|
|
dcx.tcx.node_type_insert(id, ty);
|
|
}
|
|
c::tag_table_item_subst => {
|
|
let item_substs = ty::ItemSubsts {
|
|
substs: val_dsr.read_substs(dcx)
|
|
};
|
|
dcx.tcx.tables.borrow_mut().item_substs.insert(
|
|
id, item_substs);
|
|
}
|
|
c::tag_table_freevars => {
|
|
let fv_info = val_dsr.read_to_vec(|val_dsr| {
|
|
Ok(val_dsr.read_freevar_entry(dcx))
|
|
}).unwrap().into_iter().collect();
|
|
dcx.tcx.freevars.borrow_mut().insert(id, fv_info);
|
|
}
|
|
c::tag_table_upvar_capture_map => {
|
|
let var_id: ast::NodeId = Decodable::decode(val_dsr).unwrap();
|
|
let upvar_id = ty::UpvarId {
|
|
var_id: dcx.tr_id(var_id),
|
|
closure_expr_id: id
|
|
};
|
|
let ub = val_dsr.read_upvar_capture(dcx);
|
|
dcx.tcx.tables.borrow_mut().upvar_capture_map.insert(upvar_id, ub);
|
|
}
|
|
c::tag_table_tcache => {
|
|
let type_scheme = val_dsr.read_type_scheme(dcx);
|
|
let lid = DefId { krate: LOCAL_CRATE, node: id };
|
|
dcx.tcx.register_item_type(lid, type_scheme);
|
|
}
|
|
c::tag_table_param_defs => {
|
|
let bounds = val_dsr.read_type_param_def(dcx);
|
|
dcx.tcx.ty_param_defs.borrow_mut().insert(id, bounds);
|
|
}
|
|
c::tag_table_method_map => {
|
|
let (autoderef, method) = val_dsr.read_method_callee(dcx);
|
|
let method_call = ty::MethodCall {
|
|
expr_id: id,
|
|
autoderef: autoderef
|
|
};
|
|
dcx.tcx.tables.borrow_mut().method_map.insert(method_call, method);
|
|
}
|
|
c::tag_table_adjustments => {
|
|
let adj: ty::AutoAdjustment = val_dsr.read_auto_adjustment(dcx);
|
|
dcx.tcx.tables.borrow_mut().adjustments.insert(id, adj);
|
|
}
|
|
c::tag_table_closure_tys => {
|
|
let closure_ty =
|
|
val_dsr.read_closure_ty(dcx);
|
|
dcx.tcx.tables.borrow_mut().closure_tys.insert(DefId::local(id),
|
|
closure_ty);
|
|
}
|
|
c::tag_table_closure_kinds => {
|
|
let closure_kind =
|
|
val_dsr.read_closure_kind(dcx);
|
|
dcx.tcx.tables.borrow_mut().closure_kinds.insert(DefId::local(id),
|
|
closure_kind);
|
|
}
|
|
c::tag_table_cast_kinds => {
|
|
let cast_kind =
|
|
val_dsr.read_cast_kind(dcx);
|
|
dcx.tcx.cast_kinds.borrow_mut().insert(id, cast_kind);
|
|
}
|
|
c::tag_table_const_qualif => {
|
|
let qualif: ConstQualif = Decodable::decode(val_dsr).unwrap();
|
|
dcx.tcx.const_qualif_map.borrow_mut().insert(id, qualif);
|
|
}
|
|
_ => {
|
|
dcx.tcx.sess.bug(
|
|
&format!("unknown tag found in side tables: {:x}",
|
|
tag));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
debug!(">< Side table doc loaded");
|
|
}
|
|
}
|
|
|
|
// ______________________________________________________________________
|
|
// Testing of astencode_gen
|
|
|
|
#[cfg(test)]
|
|
fn encode_item_ast(rbml_w: &mut Encoder, item: &hir::Item) {
|
|
rbml_w.start_tag(c::tag_tree as usize);
|
|
(*item).encode(rbml_w);
|
|
rbml_w.end_tag();
|
|
}
|
|
|
|
#[cfg(test)]
|
|
fn decode_item_ast(par_doc: rbml::Doc) -> hir::Item {
|
|
let chi_doc = par_doc.get(c::tag_tree as usize);
|
|
let mut d = reader::Decoder::new(chi_doc);
|
|
Decodable::decode(&mut d).unwrap()
|
|
}
|
|
|
|
#[cfg(test)]
|
|
trait FakeExtCtxt {
|
|
fn call_site(&self) -> codemap::Span;
|
|
fn cfg(&self) -> ast::CrateConfig;
|
|
fn ident_of(&self, st: &str) -> ast::Ident;
|
|
fn name_of(&self, st: &str) -> ast::Name;
|
|
fn parse_sess(&self) -> &parse::ParseSess;
|
|
}
|
|
|
|
#[cfg(test)]
|
|
impl FakeExtCtxt for parse::ParseSess {
|
|
fn call_site(&self) -> codemap::Span {
|
|
codemap::Span {
|
|
lo: codemap::BytePos(0),
|
|
hi: codemap::BytePos(0),
|
|
expn_id: codemap::NO_EXPANSION,
|
|
}
|
|
}
|
|
fn cfg(&self) -> ast::CrateConfig { Vec::new() }
|
|
fn ident_of(&self, st: &str) -> ast::Ident {
|
|
parse::token::str_to_ident(st)
|
|
}
|
|
fn name_of(&self, st: &str) -> ast::Name {
|
|
parse::token::intern(st)
|
|
}
|
|
fn parse_sess(&self) -> &parse::ParseSess { self }
|
|
}
|
|
|
|
#[cfg(test)]
|
|
fn mk_ctxt() -> parse::ParseSess {
|
|
parse::ParseSess::new()
|
|
}
|
|
|
|
#[cfg(test)]
|
|
fn roundtrip(in_item: P<hir::Item>) {
|
|
let mut wr = Cursor::new(Vec::new());
|
|
encode_item_ast(&mut Encoder::new(&mut wr), &*in_item);
|
|
let rbml_doc = rbml::Doc::new(wr.get_ref());
|
|
let out_item = decode_item_ast(rbml_doc);
|
|
|
|
assert!(*in_item == out_item);
|
|
}
|
|
|
|
#[test]
|
|
fn test_basic() {
|
|
let cx = mk_ctxt();
|
|
roundtrip(lower_item("e_item!(&cx,
|
|
fn foo() {}
|
|
).unwrap()));
|
|
}
|
|
|
|
#[test]
|
|
fn test_smalltalk() {
|
|
let cx = mk_ctxt();
|
|
roundtrip(lower_item("e_item!(&cx,
|
|
fn foo() -> isize { 3 + 4 } // first smalltalk program ever executed.
|
|
).unwrap()));
|
|
}
|
|
|
|
#[test]
|
|
fn test_more() {
|
|
let cx = mk_ctxt();
|
|
roundtrip(lower_item("e_item!(&cx,
|
|
fn foo(x: usize, y: usize) -> usize {
|
|
let z = x + y;
|
|
return z;
|
|
}
|
|
).unwrap()));
|
|
}
|
|
|
|
#[test]
|
|
fn test_simplification() {
|
|
let cx = mk_ctxt();
|
|
let item = quote_item!(&cx,
|
|
fn new_int_alist<B>() -> alist<isize, B> {
|
|
fn eq_int(a: isize, b: isize) -> bool { a == b }
|
|
return alist {eq_fn: eq_int, data: Vec::new()};
|
|
}
|
|
).unwrap();
|
|
let hir_item = lower_item(&item);
|
|
let item_in = InlinedItemRef::Item(&hir_item);
|
|
let item_out = simplify_ast(item_in);
|
|
let item_exp = InlinedItem::Item(lower_item("e_item!(&cx,
|
|
fn new_int_alist<B>() -> alist<isize, B> {
|
|
return alist {eq_fn: eq_int, data: Vec::new()};
|
|
}
|
|
).unwrap()));
|
|
match (item_out, item_exp) {
|
|
(InlinedItem::Item(item_out), InlinedItem::Item(item_exp)) => {
|
|
assert!(pprust::item_to_string(&*item_out) ==
|
|
pprust::item_to_string(&*item_exp));
|
|
}
|
|
_ => panic!()
|
|
}
|
|
}
|