Source file src/vendor/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	}
   116	

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