Function AppendMapHeader

msgp/write_bytes.go:26–41

AppendMapHeader appends a map header with the given size to the slice

(b []byte, sz uint32)

// AppendMapHeader appends a map header with the
// given size to the slice
func AppendMapHeader(b []byte, sz uint32) []byte {
	switch {
	case sz <= 15:
		return append(b, wfixmap(uint8(sz)))

	case sz <= math.MaxUint16:
		o, n := ensure(b, 3)
		prefixu16(o[n:], mmap16, uint16(sz))
		return o

	default:
		o, n := ensure(b, 5)
		prefixu32(o[n:], mmap32, sz)
		return o
	}
}

// AppendArrayHeader appends an array header with
// the given size to the slice