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Diffstat (limited to 'vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go')
| -rw-r--r-- | vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go b/vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go deleted file mode 100644 index 14a28f16fc..0000000000 --- a/vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go +++ /dev/null @@ -1,57 +0,0 @@ -// Copyright (c) 2012, 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 comparer provides interface and implementation for ordering -// sets of data. -package comparer - -// BasicComparer is the interface that wraps the basic Compare method. -type BasicComparer interface { - // Compare returns -1, 0, or +1 depending on whether a is 'less than', - // 'equal to' or 'greater than' b. The two arguments can only be 'equal' - // if their contents are exactly equal. Furthermore, the empty slice - // must be 'less than' any non-empty slice. - Compare(a, b []byte) int -} - -// Comparer defines a total ordering over the space of []byte keys: a 'less -// than' relationship. -type Comparer interface { - BasicComparer - - // Name returns name of the comparer. - // - // The Level-DB on-disk format stores the comparer name, and opening a - // database with a different comparer from the one it was created with - // will result in an error. - // - // An implementation to a new name whenever the comparer implementation - // changes in a way that will cause the relative ordering of any two keys - // to change. - // - // Names starting with "leveldb." are reserved and should not be used - // by any users of this package. - Name() string - - // Bellow are advanced functions used used to reduce the space requirements - // for internal data structures such as index blocks. - - // Separator appends a sequence of bytes x to dst such that a <= x && x < b, - // where 'less than' is consistent with Compare. An implementation should - // return nil if x equal to a. - // - // Either contents of a or b should not by any means modified. Doing so - // may cause corruption on the internal state. - Separator(dst, a, b []byte) []byte - - // Successor appends a sequence of bytes x to dst such that x >= b, where - // 'less than' is consistent with Compare. An implementation should return - // nil if x equal to b. - // - // Contents of b should not by any means modified. Doing so may cause - // corruption on the internal state. - Successor(dst, b []byte) []byte -} |