rustdoc: Implement `is_primitive` in terms of `primitive_type()`

Previously, they disagreed about what types were primitives.

This also fixes a bug where rustdoc would mark any type with a reference
as a primitive.

1 files changed, 1 insertions, 8 deletions

diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index 675de640c70..30dc2d1e4a2 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -1413,7 +1413,6 @@ impl Type {
                 }
             }
             RawPointer(..) => Some(PrimitiveType::RawPointer),
-            BorrowedRef { type_: box Generic(..), .. } => Some(PrimitiveType::Reference),
             BareFunction(..) => Some(PrimitiveType::Fn),
             Never => Some(PrimitiveType::Never),
             _ => None,
@@ -1472,13 +1471,7 @@ impl Type {
     }
 
     crate fn is_primitive(&self) -> bool {
-        match self {
-            Self::Primitive(_) => true,
-            Self::BorrowedRef { ref type_, .. } | Self::RawPointer(_, ref type_) => {
-                type_.is_primitive()
-            }
-            _ => false,
-        }
+        self.primitive_type().is_some()
     }
 
     crate fn projection(&self) -> Option<(&Type, DefId, Symbol)> {