Replace ra_hir_expand::either with crate

crates/ra_hir_expand/src/either.rs

@@ -1,54 +0,0 @@
-//! FIXME: write short doc here
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub enum Either<A, B> {
-    A(A),
-    B(B),
-}
-
-impl<A, B> Either<A, B> {
-    pub fn either<R, F1, F2>(self, f1: F1, f2: F2) -> R
-    where
-        F1: FnOnce(A) -> R,
-        F2: FnOnce(B) -> R,
-    {
-        match self {
-            Either::A(a) => f1(a),
-            Either::B(b) => f2(b),
-        }
-    }
-    pub fn map<U, V, F1, F2>(self, f1: F1, f2: F2) -> Either<U, V>
-    where
-        F1: FnOnce(A) -> U,
-        F2: FnOnce(B) -> V,
-    {
-        match self {
-            Either::A(a) => Either::A(f1(a)),
-            Either::B(b) => Either::B(f2(b)),
-        }
-    }
-    pub fn map_a<U, F>(self, f: F) -> Either<U, B>
-    where
-        F: FnOnce(A) -> U,
-    {
-        self.map(f, |it| it)
-    }
-    pub fn a(self) -> Option<A> {
-        match self {
-            Either::A(it) => Some(it),
-            Either::B(_) => None,
-        }
-    }
-    pub fn b(self) -> Option<B> {
-        match self {
-            Either::A(_) => None,
-            Either::B(it) => Some(it),
-        }
-    }
-    pub fn as_ref(&self) -> Either<&A, &B> {
-        match self {
-            Either::A(it) => Either::A(it),
-            Either::B(it) => Either::B(it),
-        }
-    }
-}

crates/ra_hir_expand/src/hygiene.rs

@@ -2,12 +2,12 @@
 //!
 //! Specifically, `ast` + `Hygiene` allows you to create a `Name`. Note that, at
 //! this moment, this is horribly incomplete and handles only `$crate`.
+use either::Either;
 use ra_db::CrateId;
 use ra_syntax::ast;
 
 use crate::{
     db::AstDatabase,
-    either::Either,
     name::{AsName, Name},
     HirFileId, HirFileIdRepr, MacroDefKind,
 };
@@ -41,9 +41,9 @@ impl Hygiene {
     pub fn name_ref_to_name(&self, name_ref: ast::NameRef) -> Either<Name, CrateId> {
         if let Some(def_crate) = self.def_crate {
             if name_ref.text() == "$crate" {
-                return Either::B(def_crate);
+                return Either::Right(def_crate);
             }
         }
-        Either::A(name_ref.as_name())
+        Either::Left(name_ref.as_name())
     }
 }

crates/ra_hir_expand/src/lib.rs

@@ -6,7 +6,6 @@
 
 pub mod db;
 pub mod ast_id_map;
-pub mod either;
 pub mod name;
 pub mod hygiene;
 pub mod diagnostics;