introduce 'type AttrVec'

Author: Centril

src/librustc/hir/lowering.rs

@@ -53,7 +53,6 @@ use crate::util::nodemap::{DefIdMap, NodeMap};
 use errors::Applicability;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_index::vec::IndexVec;
-use rustc_data_structures::thin_vec::ThinVec;
 use rustc_data_structures::sync::Lrc;
 
 use std::collections::BTreeMap;
@@ -1205,7 +1204,7 @@ impl<'a> LoweringContext<'a> {
                                 id: ty.id,
                                 kind: ExprKind::Path(qself.clone(), path.clone()),
                                 span: ty.span,
-                                attrs: ThinVec::new(),
+                                attrs: AttrVec::new(),
                             };
 
                             let ct = self.with_new_scopes(|this| {
@@ -2751,7 +2750,7 @@ impl<'a> LoweringContext<'a> {
     /// has no attributes and is not targeted by a `break`.
     fn lower_block_expr(&mut self, b: &Block) -> hir::Expr {
         let block = self.lower_block(b, false);
-        self.expr_block(block, ThinVec::new())
+        self.expr_block(block, AttrVec::new())
     }
 
     fn lower_pat(&mut self, p: &Pat) -> P<hir::Pat> {
@@ -3102,7 +3101,7 @@ impl<'a> LoweringContext<'a> {
 
     fn stmt_let_pat(
         &mut self,
-        attrs: ThinVec<Attribute>,
+        attrs: AttrVec,
         span: Span,
         init: Option<P<hir::Expr>>,
         pat: P<hir::Pat>,

src/librustc/hir/lowering/expr.rs

@@ -1318,8 +1318,7 @@ impl LoweringContext<'_> {
         &mut self,
         span: Span,
         expr: P<hir::Expr>,
-        attrs: ThinVec<Attribute>
-    ) -> hir::Expr {
+        attrs: AttrVec) -> hir::Expr {
         self.expr(span, hir::ExprKind::DropTemps(expr), attrs)
     }
 
@@ -1333,7 +1332,7 @@ impl LoweringContext<'_> {
         self.expr(span, hir::ExprKind::Match(arg, arms, source), ThinVec::new())
     }
 
-    fn expr_break(&mut self, span: Span, attrs: ThinVec<Attribute>) -> P<hir::Expr> {
+    fn expr_break(&mut self, span: Span, attrs: AttrVec) -> P<hir::Expr> {
         let expr_break = hir::ExprKind::Break(self.lower_loop_destination(None), None);
         P(self.expr(span, expr_break, attrs))
     }
@@ -1404,7 +1403,7 @@ impl LoweringContext<'_> {
         span: Span,
         components: &[Symbol],
         params: Option<P<hir::GenericArgs>>,
-        attrs: ThinVec<Attribute>,
+        attrs: AttrVec,
     ) -> hir::Expr {
         let path = self.std_path(span, components, params, true);
         self.expr(
@@ -1423,7 +1422,7 @@ impl LoweringContext<'_> {
         span: Span,
         ident: Ident,
         binding: hir::HirId,
-        attrs: ThinVec<Attribute>,
+        attrs: AttrVec,
     ) -> hir::Expr {
         let expr_path = hir::ExprKind::Path(hir::QPath::Resolved(
             None,
@@ -1459,16 +1458,11 @@ impl LoweringContext<'_> {
         self.expr_block(P(blk), ThinVec::new())
     }
 
-    pub(super) fn expr_block(&mut self, b: P<hir::Block>, attrs: ThinVec<Attribute>) -> hir::Expr {
+    pub(super) fn expr_block(&mut self, b: P<hir::Block>, attrs: AttrVec) -> hir::Expr {
         self.expr(b.span, hir::ExprKind::Block(b, None), attrs)
     }
 
-    pub(super) fn expr(
-        &mut self,
-        span: Span,
-        kind: hir::ExprKind,
-        attrs: ThinVec<Attribute>
-    ) -> hir::Expr {
+    pub(super) fn expr(&mut self, span: Span, kind: hir::ExprKind, attrs: AttrVec) -> hir::Expr {
         hir::Expr { hir_id: self.next_id(), kind, span, attrs }
     }
 

src/librustc/hir/lowering/item.rs

@@ -11,7 +11,6 @@ use crate::hir::def_id::DefId;
 use crate::hir::def::{Res, DefKind};
 use crate::util::nodemap::NodeMap;
 
-use rustc_data_structures::thin_vec::ThinVec;
 use rustc_target::spec::abi;
 
 use std::collections::BTreeSet;
@@ -899,7 +898,7 @@ impl LoweringContext<'_> {
 
     /// Construct `ExprKind::Err` for the given `span`.
     fn expr_err(&mut self, span: Span) -> hir::Expr {
-        self.expr(span, hir::ExprKind::Err, ThinVec::new())
+        self.expr(span, hir::ExprKind::Err, AttrVec::new())
     }
 
     fn lower_impl_item(&mut self, i: &AssocItem) -> hir::ImplItem {
@@ -1182,7 +1181,7 @@ impl LoweringContext<'_> {
                 //
                 // If this is the simple case, this parameter will end up being the same as the
                 // original parameter, but with a different pattern id.
-                let mut stmt_attrs = ThinVec::new();
+                let mut stmt_attrs = AttrVec::new();
                 stmt_attrs.extend(parameter.attrs.iter().cloned());
                 let (new_parameter_pat, new_parameter_id) = this.pat_ident(desugared_span, ident);
                 let new_parameter = hir::Param {
@@ -1226,7 +1225,7 @@ impl LoweringContext<'_> {
                         desugared_span, ident, hir::BindingAnnotation::Mutable);
                     let move_expr = this.expr_ident(desugared_span, ident, new_parameter_id);
                     let move_stmt = this.stmt_let_pat(
-                        ThinVec::new(),
+                        AttrVec::new(),
                         desugared_span,
                         Some(P(move_expr)),
                         move_pat,
@@ -1271,7 +1270,7 @@ impl LoweringContext<'_> {
                     let user_body = this.expr_drop_temps(
                         desugared_span,
                         P(user_body),
-                        ThinVec::new(),
+                        AttrVec::new(),
                     );
 
                     // As noted above, create the final block like
@@ -1288,9 +1287,9 @@ impl LoweringContext<'_> {
                         statements.into(),
                         Some(P(user_body)),
                     );
-                    this.expr_block(P(body), ThinVec::new())
+                    this.expr_block(P(body), AttrVec::new())
                 });
-            (HirVec::from(parameters), this.expr(body_span, async_expr, ThinVec::new()))
+            (HirVec::from(parameters), this.expr(body_span, async_expr, AttrVec::new()))
         })
     }
 

src/librustc/hir/mod.rs

@@ -20,7 +20,7 @@ use errors::FatalError;
 use syntax_pos::{Span, DUMMY_SP, MultiSpan};
 use syntax::source_map::Spanned;
 use syntax::ast::{self, CrateSugar, Ident, Name, NodeId, AsmDialect};
-use syntax::ast::{Attribute, Label, LitKind, StrStyle, FloatTy, IntTy, UintTy};
+use syntax::ast::{AttrVec, Attribute, Label, LitKind, StrStyle, FloatTy, IntTy, UintTy};
 pub use syntax::ast::{Mutability, Constness, Unsafety, Movability, CaptureBy};
 pub use syntax::ast::{IsAuto, ImplPolarity, BorrowKind};
 use syntax::attr::{InlineAttr, OptimizeAttr};
@@ -29,7 +29,6 @@ use syntax::tokenstream::TokenStream;
 use syntax::util::parser::ExprPrecedence;
 use rustc_target::spec::abi::Abi;
 use rustc_data_structures::sync::{par_for_each_in, Send, Sync};
-use rustc_data_structures::thin_vec::ThinVec;
 use rustc_macros::HashStable;
 use rustc_serialize::{self, Encoder, Encodable, Decoder, Decodable};
 use std::collections::{BTreeSet, BTreeMap};
@@ -1274,7 +1273,7 @@ pub struct Local {
     pub init: Option<P<Expr>>,
     pub hir_id: HirId,
     pub span: Span,
-    pub attrs: ThinVec<Attribute>,
+    pub attrs: AttrVec,
     /// Can be `ForLoopDesugar` if the `let` statement is part of a `for` loop
     /// desugaring. Otherwise will be `Normal`.
     pub source: LocalSource,
@@ -1459,7 +1458,7 @@ pub struct AnonConst {
 pub struct Expr {
     pub hir_id: HirId,
     pub kind: ExprKind,
-    pub attrs: ThinVec<Attribute>,
+    pub attrs: AttrVec,
     pub span: Span,
 }
 

src/librustc_interface/util.rs

@@ -10,7 +10,6 @@ use rustc_data_structures::jobserver;
 use rustc_data_structures::sync::{Lock, Lrc};
 use rustc_data_structures::stable_hasher::StableHasher;
 use rustc_data_structures::fingerprint::Fingerprint;
-use rustc_data_structures::thin_vec::ThinVec;
 use rustc_data_structures::fx::{FxHashSet, FxHashMap};
 use rustc_errors::registry::Registry;
 use rustc_metadata::dynamic_lib::DynamicLibrary;
@@ -24,7 +23,7 @@ use std::ops::DerefMut;
 use smallvec::SmallVec;
 use syntax::ptr::P;
 use syntax::mut_visit::{*, MutVisitor, visit_clobber};
-use syntax::ast::BlockCheckMode;
+use syntax::ast::{AttrVec, BlockCheckMode};
 use syntax::util::lev_distance::find_best_match_for_name;
 use syntax::source_map::{FileLoader, RealFileLoader, SourceMap};
 use syntax::symbol::{Symbol, sym};
@@ -741,7 +740,7 @@ impl<'a> MutVisitor for ReplaceBodyWithLoop<'a, '_> {
                 id: resolver.next_node_id(),
                 kind: ast::ExprKind::Block(P(b), None),
                 span: syntax_pos::DUMMY_SP,
-                attrs: ThinVec::new(),
+                attrs: AttrVec::new(),
             });
 
             ast::Stmt {
@@ -756,7 +755,7 @@ impl<'a> MutVisitor for ReplaceBodyWithLoop<'a, '_> {
             kind: ast::ExprKind::Loop(P(empty_block), None),
             id: self.resolver.next_node_id(),
             span: syntax_pos::DUMMY_SP,
-                attrs: ThinVec::new(),
+                attrs: AttrVec::new(),
         });
 
         let loop_stmt = ast::Stmt {

src/librustc_parse/parser/diagnostics.rs

@@ -4,11 +4,10 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::{self, PResult, Applicability, DiagnosticBuilder, Handler, pluralize};
 use rustc_error_codes::*;
 use syntax::ast::{self, Param, BinOpKind, BindingMode, BlockCheckMode, Expr, ExprKind, Ident, Item};
-use syntax::ast::{ItemKind, Mutability, Pat, PatKind, PathSegment, QSelf, Ty, TyKind, Attribute};
+use syntax::ast::{ItemKind, Mutability, Pat, PatKind, PathSegment, QSelf, Ty, TyKind, AttrVec};
 use syntax::token::{self, TokenKind, token_can_begin_expr};
 use syntax::print::pprust;
 use syntax::ptr::P;
-use syntax::ThinVec;
 use syntax::util::parser::AssocOp;
 use syntax::struct_span_err;
 use syntax_pos::symbol::kw;
@@ -32,7 +31,7 @@ pub(super) fn dummy_arg(ident: Ident) -> Param {
         id: ast::DUMMY_NODE_ID
     };
     Param {
-        attrs: ThinVec::default(),
+        attrs: AttrVec::default(),
         id: ast::DUMMY_NODE_ID,
         pat,
         span: ident.span,
@@ -164,7 +163,7 @@ impl RecoverQPath for Expr {
         Self {
             span: path.span,
             kind: ExprKind::Path(qself, path),
-            attrs: ThinVec::new(),
+            attrs: AttrVec::new(),
             id: ast::DUMMY_NODE_ID,
         }
     }
@@ -551,7 +550,7 @@ impl<'a> Parser<'a> {
         );
 
         let mk_err_expr = |this: &Self, span| {
-            Ok(Some(this.mk_expr(span, ExprKind::Err, ThinVec::new())))
+            Ok(Some(this.mk_expr(span, ExprKind::Err, AttrVec::new())))
         };
 
         match lhs.kind {
@@ -974,7 +973,7 @@ impl<'a> Parser<'a> {
         &mut self,
         lo: Span,
         await_sp: Span,
-        attrs: ThinVec<Attribute>,
+        attrs: AttrVec,
     ) -> PResult<'a, P<Expr>> {
         let (hi, expr, is_question) = if self.token == token::Not {
             // Handle `await!(<expr>)`.
@@ -1005,7 +1004,7 @@ impl<'a> Parser<'a> {
                 None,
                 self.token.span,
                 BlockCheckMode::Default,
-                ThinVec::new(),
+                AttrVec::new(),
             )
         } else {
             self.parse_expr()
@@ -1126,7 +1125,7 @@ impl<'a> Parser<'a> {
                 err.emit();
                 // Recover from parse error, callers expect the closing delim to be consumed.
                 self.consume_block(delim, ConsumeClosingDelim::Yes);
-                self.mk_expr(lo.to(self.prev_span), ExprKind::Err, ThinVec::new())
+                self.mk_expr(lo.to(self.prev_span), ExprKind::Err, AttrVec::new())
             }
         }
     }