Rollup merge of rust-lang#58300 - taiki-e:librustc_typeck-2018, r=petrochenkov

librustc_typeck => 2018

Transitions `librustc_typeck` to Rust 2018; cc rust-lang#58099

TODO: elided_lifetimes_in_paths

r? @Centril

Author: pietroalbini

src/librustc_typeck/Cargo.toml

@@ -2,6 +2,7 @@
 authors = ["The Rust Project Developers"]
 name = "rustc_typeck"
 version = "0.0.0"
+edition = "2018"
 
 [lib]
 name = "rustc_typeck"
@@ -14,7 +15,7 @@ arena = { path = "../libarena" }
 log = "0.4"
 rustc = { path = "../librustc" }
 rustc_data_structures = { path = "../librustc_data_structures" }
-rustc_errors = { path = "../librustc_errors" }
+errors = { path = "../librustc_errors", package = "rustc_errors" }
 rustc_target = { path = "../librustc_target" }
 smallvec = { version = "0.6.7", features = ["union", "may_dangle"] }
 syntax = { path = "../libsyntax" }

src/librustc_typeck/astconv.rs

@@ -3,13 +3,13 @@
 //! instance of `AstConv`.
 
 use errors::{Applicability, DiagnosticId};
-use hir::{self, GenericArg, GenericArgs};
-use hir::def::Def;
-use hir::def_id::DefId;
-use hir::HirVec;
-use lint;
-use middle::resolve_lifetime as rl;
-use namespace::Namespace;
+use crate::hir::{self, GenericArg, GenericArgs};
+use crate::hir::def::Def;
+use crate::hir::def_id::DefId;
+use crate::hir::HirVec;
+use crate::lint;
+use crate::middle::resolve_lifetime as rl;
+use crate::namespace::Namespace;
 use rustc::lint::builtin::AMBIGUOUS_ASSOCIATED_ITEMS;
 use rustc::traits;
 use rustc::ty::{self, Ty, TyCtxt, ToPredicate, TypeFoldable};
@@ -18,15 +18,15 @@ use rustc::ty::subst::{Kind, Subst, Substs};
 use rustc::ty::wf::object_region_bounds;
 use rustc_data_structures::sync::Lrc;
 use rustc_target::spec::abi;
-use require_c_abi_if_variadic;
+use crate::require_c_abi_if_variadic;
 use smallvec::SmallVec;
 use syntax::ast;
 use syntax::feature_gate::{GateIssue, emit_feature_err};
 use syntax::ptr::P;
 use syntax::util::lev_distance::find_best_match_for_name;
 use syntax_pos::{DUMMY_SP, Span, MultiSpan};
-use util::common::ErrorReported;
-use util::nodemap::FxHashMap;
+use crate::util::common::ErrorReported;
+use crate::util::nodemap::FxHashMap;
 
 use std::collections::BTreeSet;
 use std::iter;

src/librustc_typeck/check/_match.rs

@@ -1,5 +1,6 @@
-use check::{FnCtxt, Expectation, Diverges, Needs};
-use check::coercion::CoerceMany;
+use crate::check::{FnCtxt, Expectation, Diverges, Needs};
+use crate::check::coercion::CoerceMany;
+use crate::util::nodemap::FxHashMap;
 use errors::Applicability;
 use rustc::hir::{self, PatKind};
 use rustc::hir::def::{Def, CtorKind};
@@ -13,7 +14,6 @@ use syntax::source_map::Spanned;
 use syntax::ptr::P;
 use syntax::util::lev_distance::find_best_match_for_name;
 use syntax_pos::Span;
-use util::nodemap::FxHashMap;
 
 use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::cmp;

src/librustc_typeck/check/cast.rs

@@ -31,8 +31,8 @@
 use super::FnCtxt;
 
 use errors::{DiagnosticBuilder,Applicability};
-use hir::def_id::DefId;
-use lint;
+use crate::hir::def_id::DefId;
+use crate::lint;
 use rustc::hir;
 use rustc::session::Session;
 use rustc::traits;
@@ -43,7 +43,7 @@ use rustc::ty::subst::Substs;
 use rustc::middle::lang_items;
 use syntax::ast;
 use syntax_pos::Span;
-use util::common::ErrorReported;
+use crate::util::common::ErrorReported;
 
 /// Reifies a cast check to be checked once we have full type information for
 /// a function context.
@@ -294,7 +294,7 @@ impl<'a, 'gcx, 'tcx> CastCheck<'tcx> {
                                   .emit();
             }
             CastError::SizedUnsizedCast => {
-                use structured_errors::{SizedUnsizedCastError, StructuredDiagnostic};
+                use crate::structured_errors::{SizedUnsizedCastError, StructuredDiagnostic};
                 SizedUnsizedCastError::new(&fcx.tcx.sess,
                                            self.span,
                                            self.expr_ty,

src/librustc_typeck/check/closure.rs

@@ -2,8 +2,8 @@
 
 use super::{check_fn, Expectation, FnCtxt, GeneratorTypes};
 
-use astconv::AstConv;
-use middle::region;
+use crate::astconv::AstConv;
+use crate::middle::region;
 use rustc::hir::def_id::DefId;
 use rustc::infer::{InferOk, InferResult};
 use rustc::infer::LateBoundRegionConversionTime;

src/librustc_typeck/check/coercion.rs

@@ -50,7 +50,7 @@
 //! sort of a minor point so I've opted to leave it for later---after all
 //! we may want to adjust precisely when coercions occur.
 
-use check::{FnCtxt, Needs};
+use crate::check::{FnCtxt, Needs};
 use errors::DiagnosticBuilder;
 use rustc::hir;
 use rustc::hir::def_id::DefId;

src/librustc_typeck/check/demand.rs

@@ -1,4 +1,4 @@
-use check::FnCtxt;
+use crate::check::FnCtxt;
 use rustc::infer::InferOk;
 use rustc::traits::{ObligationCause, ObligationCauseCode};
 

src/librustc_typeck/check/dropck.rs

@@ -1,13 +1,13 @@
-use check::regionck::RegionCtxt;
+use crate::check::regionck::RegionCtxt;
 
-use hir::def_id::DefId;
+use crate::hir::def_id::DefId;
 use rustc::infer::outlives::env::OutlivesEnvironment;
 use rustc::infer::{self, InferOk, SuppressRegionErrors};
 use rustc::middle::region;
 use rustc::traits::{ObligationCause, TraitEngine, TraitEngineExt};
 use rustc::ty::subst::{Subst, Substs, UnpackedKind};
 use rustc::ty::{self, Ty, TyCtxt};
-use util::common::ErrorReported;
+use crate::util::common::ErrorReported;
 
 use syntax::ast;
 use syntax_pos::Span;

src/librustc_typeck/check/generator_interior.rs

@@ -11,7 +11,7 @@ use rustc::ty::{self, Ty};
 use rustc_data_structures::sync::Lrc;
 use syntax_pos::Span;
 use super::FnCtxt;
-use util::nodemap::FxHashMap;
+use crate::util::nodemap::FxHashMap;
 
 struct InteriorVisitor<'a, 'gcx: 'a+'tcx, 'tcx: 'a> {
     fcx: &'a FnCtxt<'a, 'gcx, 'tcx>,

src/librustc_typeck/check/intrinsic.rs

@@ -4,7 +4,7 @@
 use rustc::traits::{ObligationCause, ObligationCauseCode};
 use rustc::ty::{self, TyCtxt, Ty};
 use rustc::ty::subst::Subst;
-use require_same_types;
+use crate::require_same_types;
 
 use rustc_target::spec::abi::Abi;
 use syntax::symbol::Symbol;