1 files changed, 0 insertions, 78 deletions
diff --git a/trie/cache.go b/trie/cache.go
deleted file mode 100644
index e475fc861..000000000
--- a/trie/cache.go
+++ /dev/null
@@ -1,78 +0,0 @@
-// Copyright 2014 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package trie
-
-import (
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/ethereum/go-ethereum/logger/glog"
-	"github.com/syndtr/goleveldb/leveldb"
-)
-
-type Backend interface {
-	Get([]byte) ([]byte, error)
-	Put([]byte, []byte) error
-}
-
-type Cache struct {
-	batch   *leveldb.Batch
-	store   map[string][]byte
-	backend Backend
-}
-
-func NewCache(backend Backend) *Cache {
-	return &Cache{new(leveldb.Batch), make(map[string][]byte), backend}
-}
-
-func (self *Cache) Get(key []byte) []byte {
-	data := self.store[string(key)]
-	if data == nil {
-		data, _ = self.backend.Get(key)
-	}
-
-	return data
-}
-
-func (self *Cache) Put(key []byte, data []byte) {
-	self.batch.Put(key, data)
-	self.store[string(key)] = data
-}
-
-// Flush flushes the trie to the backing layer. If this is a leveldb instance
-// we'll use a batched write, otherwise we'll use regular put.
-func (self *Cache) Flush() {
-	if db, ok := self.backend.(*ethdb.LDBDatabase); ok {
-		if err := db.LDB().Write(self.batch, nil); err != nil {
-			glog.Fatal("db write err:", err)
-		}
-	} else {
-		for k, v := range self.store {
-			self.backend.Put([]byte(k), v)
-		}
-	}
-}
-
-func (self *Cache) Copy() *Cache {
-	cache := NewCache(self.backend)
-	for k, v := range self.store {
-		cache.store[k] = v
-	}
-	return cache
-}
-
-func (self *Cache) Reset() {
-	//self.store = make(map[string][]byte)
-}