From 291d578938d7dc9b1f9bbd1174e444cc831531d9 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Fri, 4 Jan 2019 16:01:06 +0300
Subject: extract area to a crate

---
 crates/ra_vfs/src/arena.rs | 53 ----------------------------------------------
 1 file changed, 53 deletions(-)
 delete mode 100644 crates/ra_vfs/src/arena.rs

(limited to 'crates/ra_vfs/src/arena.rs')

diff --git a/crates/ra_vfs/src/arena.rs b/crates/ra_vfs/src/arena.rs
deleted file mode 100644
index 6b42ae26d..000000000
--- a/crates/ra_vfs/src/arena.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-use std::{
-    marker::PhantomData,
-    ops::{Index, IndexMut},
-};
-
-#[derive(Clone, Debug)]
-pub(crate) struct Arena<ID: ArenaId, T> {
-    data: Vec<T>,
-    _ty: PhantomData<ID>,
-}
-
-pub(crate) trait ArenaId {
-    fn from_u32(id: u32) -> Self;
-    fn to_u32(self) -> u32;
-}
-
-impl<ID: ArenaId, T> Arena<ID, T> {
-    pub fn alloc(&mut self, value: T) -> ID {
-        let id = self.data.len() as u32;
-        self.data.push(value);
-        ID::from_u32(id)
-    }
-    pub fn iter<'a>(&'a self) -> impl Iterator<Item = (ID, &'a T)> {
-        self.data
-            .iter()
-            .enumerate()
-            .map(|(idx, value)| (ID::from_u32(idx as u32), value))
-    }
-}
-
-impl<ID: ArenaId, T> Default for Arena<ID, T> {
-    fn default() -> Arena<ID, T> {
-        Arena {
-            data: Vec::new(),
-            _ty: PhantomData,
-        }
-    }
-}
-
-impl<ID: ArenaId, T> Index<ID> for Arena<ID, T> {
-    type Output = T;
-    fn index(&self, idx: ID) -> &T {
-        let idx = idx.to_u32() as usize;
-        &self.data[idx]
-    }
-}
-
-impl<ID: ArenaId, T> IndexMut<ID> for Arena<ID, T> {
-    fn index_mut(&mut self, idx: ID) -> &mut T {
-        let idx = idx.to_u32() as usize;
-        &mut self.data[idx]
-    }
-}
-- 
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