Merge remote-tracking branch 'origin' into codebuild-update-docker

Author: marcoieni

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ concurrency:
   # For a given workflow, if we push to the same branch, cancel all previous builds on that branch.
   # We add an exception for try builds (try branch) and unrolled rollup builds (try-perf), which
   # are all triggered on the same branch, but which should be able to run concurrently.
-  group: ${{ github.workflow }}-${{ ((github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf') && github.sha) || github.ref }}
+  group: ${{ github.workflow }}-${{ ((github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf' || github.ref == 'refs/heads/automation/bors/try') && github.sha) || github.ref }}
   cancel-in-progress: true
 env:
   TOOLSTATE_REPO: "https://github.com/rust-lang-nursery/rust-toolstate"
@@ -80,7 +80,7 @@ jobs:
     # access the environment.
     #
     # We only enable the environment for the rust-lang/rust repository, so that CI works on forks.
-    environment: ${{ ((github.repository == 'rust-lang/rust' && (github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf' || github.ref == 'refs/heads/auto')) && 'bors') || '' }}
+    environment: ${{ ((github.repository == 'rust-lang/rust' && (github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf' || github.ref == 'refs/heads/automation/bors/try' || github.ref == 'refs/heads/auto')) && 'bors') || '' }}
     env:
       CI_JOB_NAME: ${{ matrix.name }}
       CI_JOB_DOC_URL: ${{ matrix.doc_url }}

Cargo.lock

@@ -2171,6 +2171,7 @@ dependencies = [
 name = "lint-docs"
 version = "0.1.0"
 dependencies = [
+ "rustc-literal-escaper",
  "serde_json",
  "tempfile",
  "walkdir",
@@ -3445,6 +3446,7 @@ dependencies = [
  "rustc_macros",
  "rustc_parse",
  "rustc_parse_format",
+ "rustc_proc_macro",
  "rustc_session",
  "rustc_span",
  "rustc_target",
@@ -3734,6 +3736,7 @@ dependencies = [
  "rustc_lint_defs",
  "rustc_macros",
  "rustc_parse",
+ "rustc_proc_macro",
  "rustc_serialize",
  "rustc_session",
  "rustc_span",
@@ -4082,6 +4085,7 @@ dependencies = [
  "rustc_index",
  "rustc_macros",
  "rustc_middle",
+ "rustc_proc_macro",
  "rustc_serialize",
  "rustc_session",
  "rustc_span",
@@ -4338,6 +4342,13 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "rustc_proc_macro"
+version = "0.0.0"
+dependencies = [
+ "rustc-literal-escaper",
+]
+
 [[package]]
 name = "rustc_query_impl"
 version = "0.0.0"

compiler/rustc_ast/src/ast.rs

@@ -32,7 +32,7 @@ use rustc_data_structures::tagged_ptr::Tag;
 use rustc_macros::{Decodable, Encodable, HashStable_Generic};
 pub use rustc_span::AttrId;
 use rustc_span::source_map::{Spanned, respan};
-use rustc_span::{ErrorGuaranteed, Ident, Span, Symbol, kw, sym};
+use rustc_span::{DUMMY_SP, ErrorGuaranteed, Ident, Span, Symbol, kw, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 pub use crate::format::*;
@@ -1526,6 +1526,19 @@ impl Expr {
                 | ExprKind::Struct(_)
         )
     }
+
+    /// Creates a dummy `P<Expr>`.
+    ///
+    /// Should only be used when it will be replaced afterwards or as a return value when an error was encountered.
+    pub fn dummy() -> P<Expr> {
+        P(Expr {
+            id: DUMMY_NODE_ID,
+            kind: ExprKind::Dummy,
+            span: DUMMY_SP,
+            attrs: ThinVec::new(),
+            tokens: None,
+        })
+    }
 }
 
 #[derive(Clone, Encodable, Decodable, Debug)]
@@ -3417,9 +3430,9 @@ impl Item {
             ItemKind::Fn(i) => Some(&i.generics),
             ItemKind::TyAlias(i) => Some(&i.generics),
             ItemKind::TraitAlias(_, generics, _)
-            | ItemKind::Enum(_, _, generics)
-            | ItemKind::Struct(_, _, generics)
-            | ItemKind::Union(_, _, generics) => Some(&generics),
+            | ItemKind::Enum(_, generics, _)
+            | ItemKind::Struct(_, generics, _)
+            | ItemKind::Union(_, generics, _) => Some(&generics),
             ItemKind::Trait(i) => Some(&i.generics),
             ItemKind::Impl(i) => Some(&i.generics),
         }
@@ -3663,15 +3676,15 @@ pub enum ItemKind {
     /// An enum definition (`enum`).
     ///
     /// E.g., `enum Foo<A, B> { C<A>, D<B> }`.
-    Enum(Ident, EnumDef, Generics),
+    Enum(Ident, Generics, EnumDef),
     /// A struct definition (`struct`).
     ///
     /// E.g., `struct Foo<A> { x: A }`.
-    Struct(Ident, VariantData, Generics),
+    Struct(Ident, Generics, VariantData),
     /// A union definition (`union`).
     ///
     /// E.g., `union Foo<A, B> { x: A, y: B }`.
-    Union(Ident, VariantData, Generics),
+    Union(Ident, Generics, VariantData),
     /// A trait declaration (`trait`).
     ///
     /// E.g., `trait Foo { .. }`, `trait Foo<T> { .. }` or `auto trait Foo {}`.
@@ -3688,10 +3701,8 @@ pub enum ItemKind {
     ///
     /// E.g., `foo!(..)`.
     MacCall(P<MacCall>),
-
     /// A macro definition.
     MacroDef(Ident, MacroDef),
-
     /// A single delegation item (`reuse`).
     ///
     /// E.g. `reuse <Type as Trait>::name { target_expr_template }`.
@@ -3767,9 +3778,9 @@ impl ItemKind {
             Self::Fn(box Fn { generics, .. })
             | Self::TyAlias(box TyAlias { generics, .. })
             | Self::Const(box ConstItem { generics, .. })
-            | Self::Enum(_, _, generics)
-            | Self::Struct(_, _, generics)
-            | Self::Union(_, _, generics)
+            | Self::Enum(_, generics, _)
+            | Self::Struct(_, generics, _)
+            | Self::Union(_, generics, _)
             | Self::Trait(box Trait { generics, .. })
             | Self::TraitAlias(_, generics, _)
             | Self::Impl(box Impl { generics, .. }) => Some(generics),

compiler/rustc_ast/src/ast_traits.rs

@@ -304,6 +304,7 @@ impl HasAttrs for Stmt {
 }
 
 /// A newtype around an AST node that implements the traits above if the node implements them.
+#[repr(transparent)]
 pub struct AstNodeWrapper<Wrapped, Tag> {
     pub wrapped: Wrapped,
     pub tag: PhantomData<Tag>,
@@ -313,6 +314,11 @@ impl<Wrapped, Tag> AstNodeWrapper<Wrapped, Tag> {
     pub fn new(wrapped: Wrapped, _tag: Tag) -> AstNodeWrapper<Wrapped, Tag> {
         AstNodeWrapper { wrapped, tag: Default::default() }
     }
+
+    pub fn from_mut(wrapped: &mut Wrapped, _tag: Tag) -> &mut AstNodeWrapper<Wrapped, Tag> {
+        // SAFETY: `AstNodeWrapper` is `repr(transparent)` w.r.t `Wrapped`
+        unsafe { &mut *<*mut Wrapped>::cast(wrapped) }
+    }
 }
 
 impl<Wrapped: HasNodeId, Tag> HasNodeId for AstNodeWrapper<Wrapped, Tag> {