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|
package proto
import (
"fmt"
"math"
"unsafe"
)
var uint32Codec = codec{
wire: varint,
size: sizeOfUint32,
encode: encodeUint32,
decode: decodeUint32,
}
func sizeOfUint32(p unsafe.Pointer, flags flags) int {
if p != nil {
if v := *(*uint32)(p); v != 0 || flags.has(wantzero) {
return sizeOfVarint(uint64(v))
}
}
return 0
}
func encodeUint32(b []byte, p unsafe.Pointer, flags flags) (int, error) {
if p != nil {
if v := *(*uint32)(p); v != 0 || flags.has(wantzero) {
return encodeVarint(b, uint64(v))
}
}
return 0, nil
}
func decodeUint32(b []byte, p unsafe.Pointer, _ flags) (int, error) {
v, n, err := decodeVarint(b)
if v > math.MaxUint32 {
return n, fmt.Errorf("integer overflow decoding %v into uint32", v)
}
*(*uint32)(p) = uint32(v)
return n, err
}
var fixed32Codec = codec{
wire: fixed32,
size: sizeOfFixed32,
encode: encodeFixed32,
decode: decodeFixed32,
}
func sizeOfFixed32(p unsafe.Pointer, flags flags) int {
if p != nil {
if v := *(*uint32)(p); v != 0 || flags.has(wantzero) {
return 4
}
}
return 0
}
func encodeFixed32(b []byte, p unsafe.Pointer, flags flags) (int, error) {
if p != nil {
if v := *(*uint32)(p); v != 0 || flags.has(wantzero) {
return encodeLE32(b, v)
}
}
return 0, nil
}
func decodeFixed32(b []byte, p unsafe.Pointer, _ flags) (int, error) {
v, n, err := decodeLE32(b)
*(*uint32)(p) = v
return n, err
}
|
