libgo/go/golang_org/x/net/lif/binary.go

   1 // Copyright 2016 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // +build solaris
   6
   7 package lif
   8
   9 // This file contains duplicates of encoding/binary package.
  10 //
  11 // This package is supposed to be used by the net package of standard
  12 // library. Therefore the package set used in the package must be the
  13 // same as net package.
  14
  15 var (
  16         littleEndian binaryLittleEndian
  17         bigEndian    binaryBigEndian
  18 )
  19
  20 type binaryByteOrder interface {
  21         Uint16([]byte) uint16
  22         Uint32([]byte) uint32
  23         Uint64([]byte) uint64
  24         PutUint16([]byte, uint16)
  25         PutUint32([]byte, uint32)
  26         PutUint64([]byte, uint64)
  27 }
  28
  29 type binaryLittleEndian struct{}
  30
  31 func (binaryLittleEndian) Uint16(b []byte) uint16 {
  32         _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
  33         return uint16(b[0]) | uint16(b[1])<<8
  34 }
  35
  36 func (binaryLittleEndian) PutUint16(b []byte, v uint16) {
  37         _ = b[1] // early bounds check to guarantee safety of writes below
  38         b[0] = byte(v)
  39         b[1] = byte(v >> 8)
  40 }
  41
  42 func (binaryLittleEndian) Uint32(b []byte) uint32 {
  43         _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
  44         return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
  45 }
  46
  47 func (binaryLittleEndian) PutUint32(b []byte, v uint32) {
  48         _ = b[3] // early bounds check to guarantee safety of writes below
  49         b[0] = byte(v)
  50         b[1] = byte(v >> 8)
  51         b[2] = byte(v >> 16)
  52         b[3] = byte(v >> 24)
  53 }
  54
  55 func (binaryLittleEndian) Uint64(b []byte) uint64 {
  56         _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
  57         return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
  58                 uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
  59 }
  60
  61 func (binaryLittleEndian) PutUint64(b []byte, v uint64) {
  62         _ = b[7] // early bounds check to guarantee safety of writes below
  63         b[0] = byte(v)
  64         b[1] = byte(v >> 8)
  65         b[2] = byte(v >> 16)
  66         b[3] = byte(v >> 24)
  67         b[4] = byte(v >> 32)
  68         b[5] = byte(v >> 40)
  69         b[6] = byte(v >> 48)
  70         b[7] = byte(v >> 56)
  71 }
  72
  73 type binaryBigEndian struct{}
  74
  75 func (binaryBigEndian) Uint16(b []byte) uint16 {
  76         _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
  77         return uint16(b[1]) | uint16(b[0])<<8
  78 }
  79
  80 func (binaryBigEndian) PutUint16(b []byte, v uint16) {
  81         _ = b[1] // early bounds check to guarantee safety of writes below
  82         b[0] = byte(v >> 8)
  83         b[1] = byte(v)
  84 }
  85
  86 func (binaryBigEndian) Uint32(b []byte) uint32 {
  87         _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
  88         return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
  89 }
  90
  91 func (binaryBigEndian) PutUint32(b []byte, v uint32) {
  92         _ = b[3] // early bounds check to guarantee safety of writes below
  93         b[0] = byte(v >> 24)
  94         b[1] = byte(v >> 16)
  95         b[2] = byte(v >> 8)
  96         b[3] = byte(v)
  97 }
  98
  99 func (binaryBigEndian) Uint64(b []byte) uint64 {
 100         _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
 101         return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
 102                 uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
 103 }
 104
 105 func (binaryBigEndian) PutUint64(b []byte, v uint64) {
 106         _ = b[7] // early bounds check to guarantee safety of writes below
 107         b[0] = byte(v >> 56)
 108         b[1] = byte(v >> 48)
 109         b[2] = byte(v >> 40)
 110         b[3] = byte(v >> 32)
 111         b[4] = byte(v >> 24)
 112         b[5] = byte(v >> 16)
 113         b[6] = byte(v >> 8)
 114         b[7] = byte(v)
 115 }