Auto merge of #3012 - rust-lang:rustup-2023-08-04, r=oli-obk

Automatic sync from rustc

Author: bors

.mailmap

@@ -494,6 +494,7 @@ Ryan Sullivant <rsulli55@gmail.com>
 Ryan Wiedemann <Ryan1729@gmail.com>
 S Pradeep Kumar <gohanpra@gmail.com>
 Sam Radhakrishnan <sk09idm@gmail.com>
+Samuel Tardieu <sam@rfc1149.net>
 Scott McMurray <scottmcm@users.noreply.github.com>
 Scott Olson <scott@solson.me> Scott Olson <scott@scott-olson.org>
 Sean Gillespie <sean.william.g@gmail.com> swgillespie <sean.william.g@gmail.com>

compiler/rustc_abi/src/lib.rs

@@ -1,4 +1,5 @@
 #![cfg_attr(feature = "nightly", feature(step_trait, rustc_attrs, min_specialization))]
+#![cfg_attr(all(not(bootstrap), feature = "nightly"), allow(internal_features))]
 
 use std::fmt;
 #[cfg(feature = "nightly")]

compiler/rustc_arena/src/lib.rs

@@ -23,6 +23,7 @@
 #![deny(unsafe_op_in_unsafe_fn)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
+#![cfg_attr(not(bootstrap), allow(internal_features))]
 #![allow(clippy::mut_from_ref)] // Arena allocators are one of the places where this pattern is fine.
 
 use smallvec::SmallVec;

compiler/rustc_ast/src/ast.rs

@@ -14,7 +14,7 @@
 //! - [`Generics`], [`GenericParam`], [`WhereClause`]: Metadata associated with generic parameters.
 //! - [`EnumDef`] and [`Variant`]: Enum declaration.
 //! - [`MetaItemLit`] and [`LitKind`]: Literal expressions.
-//! - [`MacroDef`], [`MacStmtStyle`], [`MacCall`], [`MacDelimiter`]: Macro definition and invocation.
+//! - [`MacroDef`], [`MacStmtStyle`], [`MacCall`]: Macro definition and invocation.
 //! - [`Attribute`]: Metadata associated with item.
 //! - [`UnOp`], [`BinOp`], and [`BinOpKind`]: Unary and binary operators.
 
@@ -1693,15 +1693,15 @@ where
 #[derive(Clone, Encodable, Decodable, Debug)]
 pub struct DelimArgs {
     pub dspan: DelimSpan,
-    pub delim: MacDelimiter,
+    pub delim: Delimiter, // Note: `Delimiter::Invisible` never occurs
     pub tokens: TokenStream,
 }
 
 impl DelimArgs {
     /// Whether a macro with these arguments needs a semicolon
     /// when used as a standalone item or statement.
     pub fn need_semicolon(&self) -> bool {
-        !matches!(self, DelimArgs { delim: MacDelimiter::Brace, .. })
+        !matches!(self, DelimArgs { delim: Delimiter::Brace, .. })
     }
 }
 
@@ -1717,32 +1717,6 @@ where
     }
 }
 
-#[derive(Copy, Clone, PartialEq, Eq, Encodable, Decodable, Debug, HashStable_Generic)]
-pub enum MacDelimiter {
-    Parenthesis,
-    Bracket,
-    Brace,
-}
-
-impl MacDelimiter {
-    pub fn to_token(self) -> Delimiter {
-        match self {
-            MacDelimiter::Parenthesis => Delimiter::Parenthesis,
-            MacDelimiter::Bracket => Delimiter::Bracket,
-            MacDelimiter::Brace => Delimiter::Brace,
-        }
-    }
-
-    pub fn from_token(delim: Delimiter) -> Option<MacDelimiter> {
-        match delim {
-            Delimiter::Parenthesis => Some(MacDelimiter::Parenthesis),
-            Delimiter::Bracket => Some(MacDelimiter::Bracket),
-            Delimiter::Brace => Some(MacDelimiter::Brace),
-            Delimiter::Invisible => None,
-        }
-    }
-}
-
 /// Represents a macro definition.
 #[derive(Clone, Encodable, Decodable, Debug, HashStable_Generic)]
 pub struct MacroDef {

compiler/rustc_ast/src/attr/mod.rs

@@ -2,7 +2,7 @@
 
 use crate::ast::{AttrArgs, AttrArgsEq, AttrId, AttrItem, AttrKind, AttrStyle, AttrVec, Attribute};
 use crate::ast::{DelimArgs, Expr, ExprKind, LitKind, MetaItemLit};
-use crate::ast::{MacDelimiter, MetaItem, MetaItemKind, NestedMetaItem, NormalAttr};
+use crate::ast::{MetaItem, MetaItemKind, NestedMetaItem, NormalAttr};
 use crate::ast::{Path, PathSegment, DUMMY_NODE_ID};
 use crate::ptr::P;
 use crate::token::{self, CommentKind, Delimiter, Token};
@@ -196,7 +196,7 @@ impl AttrItem {
 
     fn meta_item_list(&self) -> Option<ThinVec<NestedMetaItem>> {
         match &self.args {
-            AttrArgs::Delimited(args) if args.delim == MacDelimiter::Parenthesis => {
+            AttrArgs::Delimited(args) if args.delim == Delimiter::Parenthesis => {
                 MetaItemKind::list_from_tokens(args.tokens.clone())
             }
             AttrArgs::Delimited(_) | AttrArgs::Eq(..) | AttrArgs::Empty => None,
@@ -402,11 +402,9 @@ impl MetaItemKind {
     fn from_attr_args(args: &AttrArgs) -> Option<MetaItemKind> {
         match args {
             AttrArgs::Empty => Some(MetaItemKind::Word),
-            AttrArgs::Delimited(DelimArgs {
-                dspan: _,
-                delim: MacDelimiter::Parenthesis,
-                tokens,
-            }) => MetaItemKind::list_from_tokens(tokens.clone()).map(MetaItemKind::List),
+            AttrArgs::Delimited(DelimArgs { dspan: _, delim: Delimiter::Parenthesis, tokens }) => {
+                MetaItemKind::list_from_tokens(tokens.clone()).map(MetaItemKind::List)
+            }
             AttrArgs::Delimited(..) => None,
             AttrArgs::Eq(_, AttrArgsEq::Ast(expr)) => match expr.kind {
                 ExprKind::Lit(token_lit) => {
@@ -578,7 +576,7 @@ pub fn mk_attr_nested_word(
     let path = Path::from_ident(outer_ident);
     let attr_args = AttrArgs::Delimited(DelimArgs {
         dspan: DelimSpan::from_single(span),
-        delim: MacDelimiter::Parenthesis,
+        delim: Delimiter::Parenthesis,
         tokens: inner_tokens,
     });
     mk_attr(g, style, path, attr_args, span)

compiler/rustc_ast/src/token.rs

@@ -41,8 +41,6 @@ pub enum BinOpToken {
 /// Describes how a sequence of token trees is delimited.
 /// Cannot use `proc_macro::Delimiter` directly because this
 /// structure should implement some additional traits.
-/// The `None` variant is also renamed to `Invisible` to be
-/// less confusing and better convey the semantics.
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 #[derive(Encodable, Decodable, Hash, HashStable_Generic)]
 pub enum Delimiter {

compiler/rustc_ast_pretty/src/pprust/state.rs

@@ -476,7 +476,7 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
                 Some(MacHeader::Path(&item.path)),
                 false,
                 None,
-                delim.to_token(),
+                *delim,
                 tokens,
                 true,
                 span,
@@ -640,7 +640,7 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
             Some(MacHeader::Keyword(kw)),
             has_bang,
             Some(*ident),
-            macro_def.body.delim.to_token(),
+            macro_def.body.delim,
             &macro_def.body.tokens.clone(),
             true,
             sp,
@@ -1240,7 +1240,7 @@ impl<'a> State<'a> {
             Some(MacHeader::Path(&m.path)),
             true,
             None,
-            m.args.delim.to_token(),
+            m.args.delim,
             &m.args.tokens.clone(),
             true,
             m.span(),

compiler/rustc_borrowck/src/lib.rs

@@ -11,6 +11,7 @@
 #![feature(trusted_step)]
 #![feature(try_blocks)]
 #![recursion_limit = "256"]
+#![cfg_attr(not(bootstrap), allow(internal_features))]
 
 #[macro_use]
 extern crate rustc_middle;

compiler/rustc_builtin_macros/src/assert.rs

@@ -4,8 +4,9 @@ use crate::edition_panic::use_panic_2021;
 use crate::errors;
 use rustc_ast::ptr::P;
 use rustc_ast::token;
+use rustc_ast::token::Delimiter;
 use rustc_ast::tokenstream::{DelimSpan, TokenStream};
-use rustc_ast::{DelimArgs, Expr, ExprKind, MacCall, MacDelimiter, Path, PathSegment, UnOp};
+use rustc_ast::{DelimArgs, Expr, ExprKind, MacCall, Path, PathSegment, UnOp};
 use rustc_ast_pretty::pprust;
 use rustc_errors::PResult;
 use rustc_expand::base::{DummyResult, ExtCtxt, MacEager, MacResult};
@@ -58,7 +59,7 @@ pub fn expand_assert<'cx>(
                 path: panic_path(),
                 args: P(DelimArgs {
                     dspan: DelimSpan::from_single(call_site_span),
-                    delim: MacDelimiter::Parenthesis,
+                    delim: Delimiter::Parenthesis,
                     tokens,
                 }),
             })),

compiler/rustc_builtin_macros/src/assert/context.rs

@@ -1,9 +1,10 @@
 use rustc_ast::{
     ptr::P,
     token,
+    token::Delimiter,
     tokenstream::{DelimSpan, TokenStream, TokenTree},
-    BinOpKind, BorrowKind, DelimArgs, Expr, ExprKind, ItemKind, MacCall, MacDelimiter, MethodCall,
-    Mutability, Path, PathSegment, Stmt, StructRest, UnOp, UseTree, UseTreeKind, DUMMY_NODE_ID,
+    BinOpKind, BorrowKind, DelimArgs, Expr, ExprKind, ItemKind, MacCall, MethodCall, Mutability,
+    Path, PathSegment, Stmt, StructRest, UnOp, UseTree, UseTreeKind, DUMMY_NODE_ID,
 };
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::fx::FxHashSet;
@@ -179,7 +180,7 @@ impl<'cx, 'a> Context<'cx, 'a> {
                 path: panic_path,
                 args: P(DelimArgs {
                     dspan: DelimSpan::from_single(self.span),
-                    delim: MacDelimiter::Parenthesis,
+                    delim: Delimiter::Parenthesis,
                     tokens: initial.into_iter().chain(captures).collect::<TokenStream>(),
                 }),
             })),