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/ty/mod.rs
+++ b/compiler/rustc_middle/src/ty/mod.rs
@@ -1324,7 +1324,7 @@ impl VariantDef {
    pub fn single_field(&self) -> &FieldDef {
        assert!(self.fields.len() == 1);

-        &self.fields[FieldIdx::from_u32(0)]
+        &self.fields[FieldIdx::ZERO]
    }

    /// Returns the last field in this variant, if present.