use ParamConst in ExprKind::ConstParam

[rust.git] / compiler / rustc_middle / src / thir.rs

diff --git a/compiler/rustc_middle/src/thir.rs b/compiler/rustc_middle/src/thir.rs
index 40dce281c82bf2460c6885bfadde72160f236a5d..ef72e5bcf7891d6b73fb99cb2854f49ecbbe5611 100644 (file)
--- a/compiler/rustc_middle/src/thir.rs
+++ b/compiler/rustc_middle/src/thir.rs
@@ -17,6 +17,7 @@
 use rustc_index::vec::IndexVec;
 use rustc_middle::infer::canonical::Canonical;
 use rustc_middle::middle::region;
+use rustc_middle::mir::interpret::AllocId;
 use rustc_middle::mir::{
     BinOp, BorrowKind, FakeReadCause, Field, Mutability, UnOp, UserTypeProjection,
 };
@@ -127,7 +128,7 @@ pub struct Block {
 #[derive(Debug, HashStable)]
 pub struct Adt<'tcx> {
     /// The ADT we're constructing.
-    pub adt_def: &'tcx AdtDef,
+    pub adt_def: AdtDef<'tcx>,
     /// The variant of the ADT.
     pub variant_index: VariantIdx,
     pub substs: SubstsRef<'tcx>,
@@ -368,7 +369,8 @@ pub enum ExprKind<'tcx> {
     },
     /// An inline `const` block, e.g. `const {}`.
     ConstBlock {
-        value: Const<'tcx>,
+        did: DefId,
+        substs: SubstsRef<'tcx>,
     },
     /// An array literal constructed from one repeated element, e.g. `[1; 5]`.
     Repeat {
@@ -407,19 +409,32 @@ pub enum ExprKind<'tcx> {
     },
     /// A literal.
     Literal {
-        literal: Const<'tcx>,
+        lit: &'tcx hir::Lit,
+        neg: bool,
+    },
+    /// For literals that don't correspond to anything in the HIR
+    ScalarLiteral {
+        lit: ty::ScalarInt,
+        user_ty: Option<Canonical<'tcx, UserType<'tcx>>>,
+    },
+    /// Associated constants and named constants
+    NamedConst {
+        def_id: DefId,
+        substs: SubstsRef<'tcx>,
         user_ty: Option<Canonical<'tcx, UserType<'tcx>>>,
-        /// The `DefId` of the `const` item this literal
-        /// was produced from, if this is not a user-written
-        /// literal value.
-        const_id: Option<DefId>,
     },
+    ConstParam {
+        param: ty::ParamConst,
+        def_id: DefId,
+    },
+    // FIXME improve docs for `StaticRef` by distinguishing it from `NamedConst`
     /// A literal containing the address of a `static`.
     ///
     /// This is only distinguished from `Literal` so that we can register some
     /// info for diagnostics.
     StaticRef {
-        literal: Const<'tcx>,
+        alloc_id: AllocId,
+        ty: Ty<'tcx>,
         def_id: DefId,
     },
     /// Inline assembly, i.e. `asm!()`.
@@ -437,6 +452,12 @@ pub enum ExprKind<'tcx> {
     },
 }
 
+impl<'tcx> ExprKind<'tcx> {
+    pub fn zero_sized_literal(user_ty: Option<Canonical<'tcx, UserType<'tcx>>>) -> Self {
+        ExprKind::ScalarLiteral { lit: ty::ScalarInt::ZST, user_ty }
+    }
+}
+
 /// Represents the association of a field identifier and an expression.
 ///
 /// This is used in struct constructors.
@@ -615,7 +636,7 @@ pub enum PatKind<'tcx> {
     /// `Foo(...)` or `Foo{...}` or `Foo`, where `Foo` is a variant name from an ADT with
     /// multiple variants.
     Variant {
-        adt_def: &'tcx AdtDef,
+        adt_def: AdtDef<'tcx>,
         substs: SubstsRef<'tcx>,
         variant_index: VariantIdx,
         subpatterns: Vec<FieldPat<'tcx>>,
@@ -712,7 +733,7 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
             PatKind::Variant { ref subpatterns, .. } | PatKind::Leaf { ref subpatterns } => {
                 let variant = match *self.kind {
                     PatKind::Variant { adt_def, variant_index, .. } => {
-                        Some(&adt_def.variants[variant_index])
+                        Some(adt_def.variant(variant_index))
                     }
                     _ => self.ty.ty_adt_def().and_then(|adt| {
                         if !adt.is_enum() { Some(adt.non_enum_variant()) } else { None }