ich ein schrieb, es zu teilen, kann jemand helfen:
[global::System.AttributeUsage(AttributeTargets.Field, AllowMultiple = false)]
public sealed class BitInfoAttribute : Attribute {
byte length;
public BitInfoAttribute(byte length) {
this.length = length;
}
public byte Length { get { return length; } }
}
public abstract class BitField {
public void parse<T>(T[] vals) {
analysis().parse(this, ArrayConverter.convert<T, uint>(vals));
}
public byte[] toArray() {
return ArrayConverter.convert<uint, byte>(analysis().toArray(this));
}
public T[] toArray<T>() {
return ArrayConverter.convert<uint, T>(analysis().toArray(this));
}
static Dictionary<Type, BitTypeInfo> bitInfoMap = new Dictionary<Type, BitTypeInfo>();
private BitTypeInfo analysis() {
Type type = this.GetType();
if (!bitInfoMap.ContainsKey(type)) {
List<BitInfo> infos = new List<BitInfo>();
byte dataIdx = 0, offset = 0;
foreach (System.Reflection.FieldInfo f in type.GetFields()) {
object[] attrs = f.GetCustomAttributes(typeof(BitInfoAttribute), false);
if (attrs.Length == 1) {
byte bitLen = ((BitInfoAttribute)attrs[0]).Length;
if (offset + bitLen > 32) {
dataIdx++;
offset = 0;
}
infos.Add(new BitInfo(f, bitLen, dataIdx, offset));
offset += bitLen;
}
}
bitInfoMap.Add(type, new BitTypeInfo(dataIdx + 1, infos.ToArray()));
}
return bitInfoMap[type];
}
}
class BitTypeInfo {
public int dataLen { get; private set; }
public BitInfo[] bitInfos { get; private set; }
public BitTypeInfo(int _dataLen, BitInfo[] _bitInfos) {
dataLen = _dataLen;
bitInfos = _bitInfos;
}
public uint[] toArray<T>(T obj) {
uint[] datas = new uint[dataLen];
foreach (BitInfo bif in bitInfos) {
bif.encode(obj, datas);
}
return datas;
}
public void parse<T>(T obj, uint[] vals) {
foreach (BitInfo bif in bitInfos) {
bif.decode(obj, vals);
}
}
}
class BitInfo {
private System.Reflection.FieldInfo field;
private uint mask;
private byte idx, offset, shiftA, shiftB;
private bool isUnsigned = false;
public BitInfo(System.Reflection.FieldInfo _field, byte _bitLen, byte _idx, byte _offset) {
field = _field;
mask = (uint)(((1 << _bitLen) - 1) << _offset);
idx = _idx;
offset = _offset;
shiftA = (byte)(32 - _offset - _bitLen);
shiftB = (byte)(32 - _bitLen);
if (_field.FieldType == typeof(bool)
|| _field.FieldType == typeof(byte)
|| _field.FieldType == typeof(char)
|| _field.FieldType == typeof(uint)
|| _field.FieldType == typeof(ulong)
|| _field.FieldType == typeof(ushort)) {
isUnsigned = true;
}
}
public void encode(Object obj, uint[] datas) {
if (isUnsigned) {
uint val = (uint)Convert.ChangeType(field.GetValue(obj), typeof(uint));
datas[idx] |= ((uint)(val << offset) & mask);
} else {
int val = (int)Convert.ChangeType(field.GetValue(obj), typeof(int));
datas[idx] |= ((uint)(val << offset) & mask);
}
}
public void decode(Object obj, uint[] datas) {
if (isUnsigned) {
field.SetValue(obj, Convert.ChangeType((((uint)(datas[idx] & mask)) << shiftA) >> shiftB, field.FieldType));
} else {
field.SetValue(obj, Convert.ChangeType((((int)(datas[idx] & mask)) << shiftA) >> shiftB, field.FieldType));
}
}
}
public class ArrayConverter {
public static T[] convert<T>(uint[] val) {
return convert<uint, T>(val);
}
public static T1[] convert<T0, T1>(T0[] val) {
T1[] rt = null;
// type is same or length is same
// refer to http://stackoverflow.com/questions/25759878/convert-byte-to-sbyte
if (typeof(T0) == typeof(T1)) {
rt = (T1[])(Array)val;
} else {
int len = Buffer.ByteLength(val);
int w = typeWidth<T1>();
if (w == 1) { // bool
rt = new T1[len * 8];
} else if (w == 8) {
rt = new T1[len];
} else { // w > 8
int nn = w/8;
int len2 = (len/nn) + ((len % nn) > 0 ? 1 : 0);
rt = new T1[len2];
}
Buffer.BlockCopy(val, 0, rt, 0, len);
}
return rt;
}
public static string toBinary<T>(T[] vals) {
StringBuilder sb = new StringBuilder();
int width = typeWidth<T>();
int len = Buffer.ByteLength(vals);
for (int i = len-1; i >=0; i--) {
sb.Append(Convert.ToString(Buffer.GetByte(vals, i), 2).PadLeft(8, '0')).Append(" ");
}
return sb.ToString();
}
private static int typeWidth<T>() {
int rt = 0;
if (typeof(T) == typeof(bool)) { // x
rt = 1;
} else if (typeof(T) == typeof(byte)) { // x
rt = 8;
} else if (typeof(T) == typeof(sbyte)) {
rt = 8;
} else if (typeof(T) == typeof(ushort)) { // x
rt = 16;
} else if (typeof(T) == typeof(short)) {
rt = 16;
} else if (typeof(T) == typeof(char)) {
rt = 16;
} else if (typeof(T) == typeof(uint)) { // x
rt = 32;
} else if (typeof(T) == typeof(int)) {
rt = 32;
} else if (typeof(T) == typeof(float)) {
rt = 32;
} else if (typeof(T) == typeof(ulong)) { // x
rt = 64;
} else if (typeof(T) == typeof(long)) {
rt = 64;
} else if (typeof(T) == typeof(double)) {
rt = 64;
} else {
throw new Exception("Unsupport type : " + typeof(T).Name);
}
return rt;
}
}
und die Nutzung:
class MyTest01 : BitField {
[BitInfo(3)]
public bool d0;
[BitInfo(3)]
public short d1;
[BitInfo(3)]
public int d2;
[BitInfo(3)]
public int d3;
[BitInfo(3)]
public int d4;
[BitInfo(3)]
public int d5;
public MyTest01(bool _d0, short _d1, int _d2, int _d3, int _d4, int _d5) {
d0 = _d0;
d1 = _d1;
d2 = _d2;
d3 = _d3;
d4 = _d4;
d5 = _d5;
}
public MyTest01(byte[] datas) {
parse(datas);
}
public new string ToString() {
return string.Format("d0: {0}, d1: {1}, d2: {2}, d3: {3}, d4: {4}, d5: {5} \r\nbinary => {6}",
d0, d1, d2, d3, d4, d5, ArrayConverter.toBinary(toArray()));
}
};
class MyTest02 : BitField {
[BitInfo(5)]
public bool val0;
[BitInfo(5)]
public byte val1;
[BitInfo(15)]
public uint val2;
[BitInfo(15)]
public float val3;
[BitInfo(15)]
public int val4;
[BitInfo(15)]
public int val5;
[BitInfo(15)]
public int val6;
public MyTest02(bool v0, byte v1, uint v2, float v3, int v4, int v5, int v6) {
val0 = v0;
val1 = v1;
val2 = v2;
val3 = v3;
val4 = v4;
val5 = v5;
val6 = v6;
}
public MyTest02(byte[] datas) {
parse(datas);
}
public new string ToString() {
return string.Format("val0: {0}, val1: {1}, val2: {2}, val3: {3}, val4: {4}, val5: {5}, val6: {6}\r\nbinary => {7}",
val0, val1, val2, val3, val4, val5, val6, ArrayConverter.toBinary(toArray()));
}
}
public class MainClass {
public static void Main(string[] args) {
MyTest01 p = new MyTest01(false, 1, 2, 3, -1, -2);
Debug.Log("P:: " + p.ToString());
MyTest01 p2 = new MyTest01(p.toArray());
Debug.Log("P2:: " + p2.ToString());
MyTest02 t = new MyTest02(true, 1, 12, -1.3f, 4, -5, 100);
Debug.Log("t:: " + t.ToString());
MyTest02 t2 = new MyTest02(t.toArray());
Debug.Log("t:: " + t.ToString());
Console.Read();
return;
}
}
Das ist eine genial, wirklich kreativ Lösung. Gut gemacht! – dviljoen
Hinweis: "Die Methode" GetFields "gibt nach MSDN" keine Felder in einer bestimmten Reihenfolge wie alphabetischer Reihenfolge oder Deklarationsreihenfolge zurück. Ihr Code darf nicht von der Reihenfolge abhängen, in der Felder zurückgegeben werden, da diese Reihenfolge variiert. " Ist das nicht ein Problem? –
Wenn Sie eine "IBitfield" -Markerschnittstelle (ohne Member) erstellen, können Sie die Klasse "PrimitiveConversion" in Erweiterungsmethoden für jede Struktur konvertieren, die "IBitfield" implementiert. Zum Beispiel: 'public static long ToLong (dieses IBitfield-Objekt) {}'. Dann erscheint die 'ToLong()' Methode in Intellisense für 'IBitfield' Objekte. –