e300e9c423
Make use of the github.com/abcum/bump package to efficiently encode and decode from and to byte slices, whilst at the same time using encoder and decoder pools, instead of creating a new buffer for each encoding / decoding process.
66 lines
1.4 KiB
Go
66 lines
1.4 KiB
Go
// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package keys
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import (
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"encoding/binary"
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"math"
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"reflect"
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"time"
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"unsafe"
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"github.com/abcum/bump"
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)
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type writer struct {
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w *bump.Writer
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}
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func newWriter() *writer {
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return &writer{
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w: bump.NewWriter(nil),
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}
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}
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func (w *writer) writeOne(v byte) {
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w.w.WriteByte(v)
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}
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func (w *writer) writeMany(v []byte) {
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w.w.WriteBytes(v)
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}
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func (w *writer) writeTime(v time.Time) {
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b := make([]byte, 8)
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binary.BigEndian.PutUint64(b, uint64(v.UTC().UnixNano()))
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w.w.WriteBytes(b)
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}
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func (w *writer) writeFloat(v float64) {
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b := make([]byte, 8)
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if v < 0 {
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w.w.WriteByte(bNEG)
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binary.BigEndian.PutUint64(b, ^math.Float64bits(v))
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} else {
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w.w.WriteByte(bPOS)
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binary.BigEndian.PutUint64(b, math.Float64bits(v))
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}
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w.w.WriteBytes(b)
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}
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func (w *writer) writeString(v string) {
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b := *(*[]byte)(unsafe.Pointer((*reflect.SliceHeader)(unsafe.Pointer(&v))))
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w.w.WriteBytes(b)
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}
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