Merge hir::Unsafety into ast::Unsafety.

1 files changed, 23 insertions, 13 deletions

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index b0f83f03f62..887d7beed6d 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -1991,12 +1991,34 @@ pub enum IsAuto {
     No,
 }
 
-#[derive(Copy, Clone, PartialEq, RustcEncodable, RustcDecodable, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash,
+         RustcEncodable, RustcDecodable, Debug)]
 pub enum Unsafety {
     Unsafe,
     Normal,
 }
 
+impl Unsafety {
+    pub fn prefix_str(&self) -> &'static str {
+        match self {
+            Unsafety::Unsafe => "unsafe ",
+            Unsafety::Normal => "",
+        }
+    }
+}
+
+impl fmt::Display for Unsafety {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt::Display::fmt(
+            match *self {
+                Unsafety::Normal => "normal",
+                Unsafety::Unsafe => "unsafe",
+            },
+            f,
+        )
+    }
+}
+
 #[derive(Copy, Clone, RustcEncodable, RustcDecodable, Debug)]
 pub enum IsAsync {
     Async {
@@ -2041,18 +2063,6 @@ pub enum Defaultness {
     Final,
 }
 
-impl fmt::Display for Unsafety {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        fmt::Display::fmt(
-            match *self {
-                Unsafety::Normal => "normal",
-                Unsafety::Unsafe => "unsafe",
-            },
-            f,
-        )
-    }
-}
-
 #[derive(Copy, Clone, PartialEq, RustcEncodable, RustcDecodable)]
 pub enum ImplPolarity {
     /// `impl Trait for Type`