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package proto
import (
"fmt"
"math"
"unsafe"
)
var int32Codec = codec{
wire: varint,
size: sizeOfInt32,
encode: encodeInt32,
decode: decodeInt32,
}
func sizeOfInt32(p unsafe.Pointer, flags flags) int {
if p != nil {
if v := *(*int32)(p); v != 0 || flags.has(wantzero) {
return sizeOfVarint(flags.uint64(int64(v)))
}
}
return 0
}
func encodeInt32(b []byte, p unsafe.Pointer, flags flags) (int, error) {
if p != nil {
if v := *(*int32)(p); v != 0 || flags.has(wantzero) {
return encodeVarint(b, flags.uint64(int64(v)))
}
}
return 0, nil
}
func decodeInt32(b []byte, p unsafe.Pointer, flags flags) (int, error) {
u, n, err := decodeVarint(b)
v := flags.int64(u)
if v < math.MinInt32 || v > math.MaxInt32 {
return n, fmt.Errorf("integer overflow decoding %v into int32", v)
}
*(*int32)(p) = int32(v)
return n, err
}
|
