diff options
Diffstat (limited to 'vendor/golang.org/x/net/lif/binary.go')
-rw-r--r-- | vendor/golang.org/x/net/lif/binary.go | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/vendor/golang.org/x/net/lif/binary.go b/vendor/golang.org/x/net/lif/binary.go index aade9eafa..738a94f42 100644 --- a/vendor/golang.org/x/net/lif/binary.go +++ b/vendor/golang.org/x/net/lif/binary.go @@ -12,7 +12,10 @@ package lif // library. Therefore the package set used in the package must be the // same as net package. -var littleEndian binaryLittleEndian +var ( + littleEndian binaryLittleEndian + bigEndian binaryBigEndian +) type binaryByteOrder interface { Uint16([]byte) uint16 @@ -66,3 +69,47 @@ func (binaryLittleEndian) PutUint64(b []byte, v uint64) { b[6] = byte(v >> 48) b[7] = byte(v >> 56) } + +type binaryBigEndian struct{} + +func (binaryBigEndian) Uint16(b []byte) uint16 { + _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808 + return uint16(b[1]) | uint16(b[0])<<8 +} + +func (binaryBigEndian) PutUint16(b []byte, v uint16) { + _ = b[1] // early bounds check to guarantee safety of writes below + b[0] = byte(v >> 8) + b[1] = byte(v) +} + +func (binaryBigEndian) Uint32(b []byte) uint32 { + _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808 + return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24 +} + +func (binaryBigEndian) PutUint32(b []byte, v uint32) { + _ = b[3] // early bounds check to guarantee safety of writes below + b[0] = byte(v >> 24) + b[1] = byte(v >> 16) + b[2] = byte(v >> 8) + b[3] = byte(v) +} + +func (binaryBigEndian) Uint64(b []byte) uint64 { + _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808 + return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 | + uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56 +} + +func (binaryBigEndian) PutUint64(b []byte, v uint64) { + _ = b[7] // early bounds check to guarantee safety of writes below + b[0] = byte(v >> 56) + b[1] = byte(v >> 48) + b[2] = byte(v >> 40) + b[3] = byte(v >> 32) + b[4] = byte(v >> 24) + b[5] = byte(v >> 16) + b[6] = byte(v >> 8) + b[7] = byte(v) +} |