Thanos did someting

[bytom/vapor.git] / vendor / github.com / syndtr / goleveldb / leveldb / util / util.go

diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/util.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/util.go
deleted file mode 100644 (file)
index f359768..0000000
--- a/vendor/github.com/syndtr/goleveldb/leveldb/util/util.go
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Package util provides utilities used throughout leveldb.
-package util
-
-import (
-       "errors"
-)
-
-var (
-       ErrReleased    = errors.New("leveldb: resource already relesed")
-       ErrHasReleaser = errors.New("leveldb: releaser already defined")
-)
-
-// Releaser is the interface that wraps the basic Release method.
-type Releaser interface {
-       // Release releases associated resources. Release should always success
-       // and can be called multipe times without causing error.
-       Release()
-}
-
-// ReleaseSetter is the interface that wraps the basic SetReleaser method.
-type ReleaseSetter interface {
-       // SetReleaser associates the given releaser to the resources. The
-       // releaser will be called once coresponding resources released.
-       // Calling SetReleaser with nil will clear the releaser.
-       //
-       // This will panic if a releaser already present or coresponding
-       // resource is already released. Releaser should be cleared first
-       // before assigned a new one.
-       SetReleaser(releaser Releaser)
-}
-
-// BasicReleaser provides basic implementation of Releaser and ReleaseSetter.
-type BasicReleaser struct {
-       releaser Releaser
-       released bool
-}
-
-// Released returns whether Release method already called.
-func (r *BasicReleaser) Released() bool {
-       return r.released
-}
-
-// Release implements Releaser.Release.
-func (r *BasicReleaser) Release() {
-       if !r.released {
-               if r.releaser != nil {
-                       r.releaser.Release()
-                       r.releaser = nil
-               }
-               r.released = true
-       }
-}
-
-// SetReleaser implements ReleaseSetter.SetReleaser.
-func (r *BasicReleaser) SetReleaser(releaser Releaser) {
-       if r.released {
-               panic(ErrReleased)
-       }
-       if r.releaser != nil && releaser != nil {
-               panic(ErrHasReleaser)
-       }
-       r.releaser = releaser
-}
-
-type NoopReleaser struct{}
-
-func (NoopReleaser) Release() {}