Small edit (#241)

[bytom/vapor.git] / common / bit_map.go

diff --git a/common/bit_map.go b/common/bit_map.go
deleted file mode 100644 (file)
index 6dabaeb..0000000
--- a/common/bit_map.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package common
-
-import (
-       "errors"
-)
-
-const bitLen = 32
-
-var (
-       errIndexOutOfBounds = errors.New("index out of bounds error")
-)
-
-type BitMap struct {
-       size uint32
-       arr []int32
-}
-
-func NewBitMap(size uint32) *BitMap {
-       obj := &BitMap{size: size}
-       num := (size + bitLen - 1) / bitLen
-       arr := make([]int32, num)
-       obj.arr = arr
-       return obj
-}
-
-func (b *BitMap) Set(index uint32) error {
-       if index >= b.size {
-               return errIndexOutOfBounds
-       }
-
-       arrIndex, bitIndex := index / bitLen, index % bitLen
-       b.arr[arrIndex] |= (1 << bitIndex)
-       return nil
-}
-
-func (b *BitMap) Clean(index uint32) error {
-       if index >= b.size {
-               return errIndexOutOfBounds
-       }
-
-       arrIndex, bitIndex := index / bitLen, index % bitLen
-       b.arr[arrIndex] &= (^(1 << bitIndex))
-       return nil
-}
-
-func (b *BitMap) Test(index uint32) (bool, error) {
-       if index >= b.size {
-               return false, errIndexOutOfBounds
-       }
-
-       arrIndex, bitIndex := index / bitLen, index % bitLen
-       return b.arr[arrIndex] & (1 << bitIndex) != 0, nil
-}