rustc_index: Add a ZERO constant to index types

It is commonly used.
2024-04-03 17:49:59 +03:00
parent ceab6128fa
commit b40ea03f8a
42 changed files with 80 additions and 90 deletions
--- a/compiler/rustc_middle/src/mir/coverage.rs
+++ b/compiler/rustc_middle/src/mir/coverage.rs
@@ -34,7 +34,7 @@ rustc_index::newtype_index! {
 }

 impl CounterId {
-    pub const START: Self = Self::from_u32(0);
+    pub const START: Self = Self::ZERO;
 }

 rustc_index::newtype_index! {
@@ -56,7 +56,7 @@ rustc_index::newtype_index! {
 }

 impl ExpressionId {
-    pub const START: Self = Self::from_u32(0);
+    pub const START: Self = Self::ZERO;
 }

 /// Enum that can hold a constant zero value, the ID of an physical coverage