Method ReadVarInt

vm/neovm/utils/vm_reader.go:132–160

(max uint64)

}

func (r *VmReader) ReadVarInt(max uint64) (uint64, error) {
	fb, _ := r.ReadByte()
	var value uint64
	var err error

	switch fb {
	case 0xFD:
		val, e := r.ReadInt16()
		value = uint64(val)
		err = e
	case 0xFE:
		val, e := r.ReadUint32()
		value = uint64(val)
		err = e
	case 0xFF:
		val, e := r.ReadUint64()
		value = uint64(val)
		err = e
	default:
		value = uint64(fb)
	}
	if err != nil {
		return 0, err
	}
	if value > max {
		return 0, nil
	}
	return value, nil
}

func (r *VmReader) ReadVarString(maxlen uint32) (string, error) {
	bs, err := r.ReadVarBytes(maxlen)