internal List <PacketReader> GetList()
{
var src = list;
if (src != null)
{
return(src);
}
if ((tag & TagArray) != 0)
{
throw PacketException.Overflow();
}
tag |= TagArray;
var lst = new List <PacketReader>();
var max = element.Max;
var idx = element.offset;
var buf = element.buffer;
var len = 0;
while (idx != max)
{
if (buf.MoveNext(max, ref idx, out len) == false)
{
throw PacketException.Overflow();
}
var rea = new PacketReader(buf, idx, len, converters);
lst.Add(rea);
idx += len;
}
list = lst;
return(lst);
}
private static List <T> GetList <T>(PacketReader reader, IPacketConverter converter)
{
var itm = reader.GetList();
var len = itm.Count;
if (len < 1)
{
return(new List <T>());
}
var lst = new List <T>(len);
var gen = converter as IPacketConverter <T>;
try
{
if (gen != null)
{
for (int i = 0; i < len; i++)
{
lst.Add(gen.GetValue(itm[i].element));
}
}
else
{
for (int i = 0; i < len; i++)
{
lst.Add((T)converter.GetValue(itm[i].element));
}
}
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
return(lst);
}
private static T[] GetArray <T>(PacketReader reader, IPacketConverter converter)
{
var itm = reader.GetList();
var len = itm.Count;
if (len < 1)
{
return(new T[0]);
}
var arr = new T[len];
var gen = converter as IPacketConverter <T>;
try
{
if (gen != null)
{
for (int i = 0; i < len; i++)
{
arr[i] = gen.GetValue(itm[i].element);
}
}
else
{
for (int i = 0; i < len; i++)
{
arr[i] = (T)converter.GetValue(itm[i].element);
}
}
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
return(arr);
}
internal object GetValue(Type type, int level)
{
PacketException.VerifyRecursionError(ref level);
var info = Cache.GetConverterOrInfo(this.converters, type, out var converter);
return(info == null
? converter.GetObjectChecked(this.block, true)
: this.GetValueMatch(type, level, info));
}
internal void MoveNext(int define, ref int index, out int length)
{
var max = Max;
if ((define > 0 && index + define > max) || (define < 1 && buffer.MoveNext(max, ref index, out define) == false))
{
throw PacketException.Overflow();
}
length = define;
}
internal static T GetValueWrap <T>(this IPacketConverter <T> converter, Element element)
{
try
{
return(converter.GetValue(element.buffer, element.offset, element.length));
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
}
internal static T GetValueWrap <T>(this IPacketConverter <T> converter, byte[] buffer, int offset, int length)
{
try
{
return(converter.GetValue(buffer, offset, length));
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
}
internal object GetValueMatch(Type valueType, int level, Info valueInfo)
{
PacketException.VerifyRecursionError(ref level);
return(valueInfo.To switch
{
InfoFlags.Reader => this,
InfoFlags.RawReader => new PacketRawReader(this),
InfoFlags.Collection => this.GetValueCollection(level, valueInfo),
InfoFlags.Enumerable => this.GetValueEnumerable(level, valueInfo),
InfoFlags.Dictionary => this.GetValueDictionary(level, valueInfo),
_ => this.GetValueDefault(valueType, level),
});
private static Token GetToken(ConverterDictionary converters, object value, int level)
{
PacketException.VerifyRecursionError(ref level);
if (value == null)
{
return(Token.Empty);
}
var type = value.GetType();
var info = Cache.GetConverterOrInfo(converters, type, out var converter);
return(info == null ? new Value(converter.GetBytesChecked(value)) : GetTokenMatch(converters, value, level, info));
}
private static Token GetTokenMatch(ConverterDictionary converters, object value, int level, Info valueInfo)
{
PacketException.VerifyRecursionError(ref level);
return(valueInfo.From switch
{
InfoFlags.Writer => ((PacketWriter)value).token,
InfoFlags.RawWriter => new Value(((PacketRawWriter)value).stream.ToArray()),
InfoFlags.Bytes => new Value(((ICollection <byte>)value).ToBytes()),
InfoFlags.SBytes => new Value(((ICollection <sbyte>)value).ToBytes()),
InfoFlags.Enumerable => GetTokenEnumerable(converters, value, level, valueInfo),
InfoFlags.Dictionary => GetTokenDictionary(converters, value, level, valueInfo),
InfoFlags.Expando => GetTokenExpando(converters, value, level),
_ => GetTokenDefault(converters, value, level, valueInfo),
});
internal static void FinshInternal(this Stream stream, long source)
{
var dst = stream.Position;
var len = dst - source - sizeof(int);
if (len > int.MaxValue)
{
throw PacketException.Overflow();
}
stream.Position = source;
var buf = BitConverter.GetBytes((int)len);
stream.Write(buf, 0, buf.Length);
stream.Position = dst;
}
internal static object GetValueWrap(this IPacketConverter converter, byte[] buffer, int offset, int length, bool check = false)
{
try
{
if (check && converter.Length > length)
{
throw PacketException.Overflow();
}
return(converter.GetValue(buffer, offset, length));
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
}
internal List <T> ToList <T>(IPacketConverter converter)
{
if (length < 1)
{
return(new List <T>());
}
if (typeof(T) == typeof(byte))
{
return(new List <T>((T[])GetByteArray()));
}
else if (typeof(T) == typeof(sbyte))
{
return(new List <T>((T[])GetSByteArray()));
}
var def = converter.Length;
var sum = Math.DivRem(length, def, out var rem);
if (rem != 0)
{
throw PacketException.Overflow();
}
var lst = new List <T>(sum);
var gen = converter as IPacketConverter <T>;
try
{
if (gen != null)
{
for (int idx = 0; idx < sum; idx++)
{
lst.Add(gen.GetValue(buffer, offset + idx * def, def));
}
}
else
{
for (int idx = 0; idx < sum; idx++)
{
lst.Add((T)converter.GetValue(buffer, offset + idx * def, def));
}
}
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
return(lst);
}
IEnumerator IEnumerable.GetEnumerator()
{
var def = converter.Length;
if (def < 1)
{
return(Enumerator(reader.GetList(), converter));
}
var ele = reader.element;
var sum = Math.DivRem(ele.length, def, out var rem);
if (rem != 0)
{
throw PacketException.Overflow();
}
return(Enumerator(ele.buffer, ele.offset, sum, def, converter));
}
internal static byte[] Span(byte[] buffer, int offset, int length)
{
if (offset == 0 && length == buffer.Length)
{
return(buffer);
}
if (offset < 0 || length < 0 || buffer.Length - offset < length)
{
throw PacketException.Overflow();
}
if (length == 0)
{
return(s_empty_bytes);
}
var buf = new byte[length];
Buffer.BlockCopy(buffer, offset, buf, 0, length);
return(buf);
}
private List <PacketReader> InitializeList()
{
if ((this.flags & Flags.List) != 0)
{
throw PacketException.Overflow();
}
this.flags |= Flags.List;
var collection = new List <PacketReader>();
var vernier = (Vernier)this.block;
while (vernier.Any)
{
vernier.Flush();
collection.Add(new PacketReader((Block)vernier, this.converters));
}
this.list = collection;
return(collection);
}
internal static byte[] GetBytesWrap <T>(this IPacketConverter <T> converter, T value)
{
try
{
var buf = converter.GetBytes(value);
if (buf == null)
{
buf = s_empty_bytes;
}
var len = converter.Length;
if (len > 0 && len != buf.Length)
{
throw PacketException.ConvertMismatch(len);
}
return(buf);
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
}
internal static IPacketConverter GetConverter(ConverterDictionary converters, Type type, bool nothrow)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (converters != null && converters.TryGetValue(type, out var val))
{
if (val == null)
{
goto fail;
}
else
{
return(val);
}
}
if (s_converters.TryGetValue(type, out val))
{
return(val);
}
var inf = GetInfo(type);
if (inf.Flag == Info.Enum)
{
return(s_converters[inf.ElementType]);
}
fail:
if (nothrow == true)
{
return(null);
}
throw PacketException.InvalidType(type);
}
internal object GetValueMatch(Type valueType, int level, Info valueInfo)
{
if (level > Cache.Limits)
{
throw new PacketException(PacketError.RecursiveError);
}
level += 1;
switch (valueInfo.To)
{
case Info.Reader:
return(this);
case Info.RawReader:
return(new PacketRawReader(this));
case Info.Collection:
{
var inf = Cache.GetConverterOrInfo(converters, valueInfo.ElementType, out var con);
if (inf == null)
{
return(valueInfo.ToCollection(this, con));
}
var lst = GetList();
var len = lst.Count;
var arr = new object[len];
for (int i = 0; i < len; i++)
{
arr[i] = lst[i].GetValueMatch(valueInfo.ElementType, level, inf);
}
var res = valueInfo.ToCollectionCast(arr);
return(res);
}
case Info.Enumerable:
{
var inf = Cache.GetConverterOrInfo(converters, valueInfo.ElementType, out var con);
if (inf == null)
{
return(valueInfo.ToEnumerable(this, con));
}
return(valueInfo.ToEnumerableAdapter(this, level, inf));
}
case Info.Dictionary:
{
var keycon = Cache.GetConverter(converters, valueInfo.IndexType, true);
if (keycon == null)
{
throw PacketException.InvalidKeyType(valueType);
}
var inf = Cache.GetConverterOrInfo(converters, valueInfo.ElementType, out var con);
if (inf == null)
{
return(valueInfo.ToDictionary(this, keycon, con));
}
var max = element.Max;
var idx = element.offset;
var buf = element.buffer;
var keylen = keycon.Length;
var len = 0;
var lst = new List <object>();
while (true)
{
var res = max - idx;
if (res == 0)
{
break;
}
if (keylen > 0)
{
if (res < keylen)
{
goto fail;
}
else
{
len = keylen;
}
}
else if (buf.MoveNext(max, ref idx, out len) == false)
{
goto fail;
}
// Wrap error non-check
var key = keycon.GetValueWrap(buf, idx, len);
idx += len;
if (buf.MoveNext(max, ref idx, out len) == false)
{
goto fail;
}
var rea = new PacketReader(buf, idx, len, converters);
var val = rea.GetValueMatch(valueInfo.ElementType, level, inf);
idx += len;
lst.Add(key);
lst.Add(val);
}
return(valueInfo.ToDictionaryCast(lst));
fail:
throw PacketException.Overflow();
}
default:
{
var set = Cache.GetSetInfo(valueType);
if (set == null)
{
throw PacketException.InvalidType(valueType);
}
var arg = set.Arguments;
var arr = new object[arg.Length];
for (int i = 0; i < arg.Length; i++)
{
var rea = GetItem(arg[i].Key, false);
var val = rea.GetValue(arg[i].Value, level);
arr[i] = val;
}
var res = set.GetObject(arr);
return(res);
}
}
}
private static Item GetItemMatch(ConverterDictionary converters, object value, int level, Info valueInfo)
{
if (level > Cache.Limits)
{
throw new PacketException(PacketError.RecursiveError);
}
level += 1;
switch (valueInfo.From)
{
case Info.Writer:
return(((PacketWriter)value).item);
case Info.RawWriter:
return(new Item(((PacketRawWriter)value).stream));
case Info.Bytes:
return(new Item(((ICollection <byte>)value).ToBytes()));
case Info.SBytes:
return(new Item(((ICollection <sbyte>)value).ToBytes()));
case Info.Enumerable:
{
var ele = valueInfo.ElementType;
var inf = Cache.GetConverterOrInfo(converters, ele, out var con);
if (inf == null)
{
return(new Item(valueInfo.FromEnumerable(con, value), con.Length));
}
var lst = new List <Item>();
foreach (var i in ((IEnumerable)value))
{
lst.Add(GetItemMatch(converters, i, level, inf));
}
return(new Item(lst));
}
case Info.Dictionary:
{
var key = Cache.GetConverter(converters, valueInfo.IndexType, true);
if (key == null)
{
throw PacketException.InvalidKeyType(valueInfo.IndexType);
}
var ele = valueInfo.ElementType;
var inf = Cache.GetConverterOrInfo(converters, ele, out var con);
if (inf == null)
{
return(new Item(valueInfo.FromDictionary(key, con, value), key.Length, con.Length));
}
var lst = new List <KeyValuePair <byte[], Item> >();
var kvp = valueInfo.FromDictionaryAdapter(key, value);
foreach (var i in kvp)
{
var res = GetItemMatch(converters, i.Value, level, inf);
var tmp = new KeyValuePair <byte[], Item>(i.Key, res);
lst.Add(tmp);
}
return(new Item(lst, key.Length));
}
case Info.Map:
{
var dic = (IDictionary <string, object>)value;
var lst = new Dictionary <string, PacketWriter>();
foreach (var i in dic)
{
lst[i.Key] = GetWriter(converters, i.Value, level);
}
return(new Item(lst));
}
default:
{
var lst = new Dictionary <string, PacketWriter>();
var get = Cache.GetGetInfo(valueInfo.Type);
var val = get.GetValues(value);
var arg = get.Arguments;
for (int i = 0; i < arg.Length; i++)
{
lst[arg[i].Key] = GetWriter(converters, val[i], level);
}
return(new Item(lst));
}
}
}
internal void ToDictionary <TK, TV>(IPacketConverter indexConverter, IPacketConverter elementConverter, DictionaryAbstract <TK, TV> dictionary)
{
if (length == 0)
{
return;
}
var keygen = indexConverter as IPacketConverter <TK>;
var valgen = elementConverter as IPacketConverter <TV>;
var keylen = indexConverter.Length;
var vallen = elementConverter.Length;
var max = Max;
var idx = offset;
var len = 0;
try
{
while (true)
{
var sub = max - idx;
if (sub == 0)
{
break;
}
if (keylen > 0)
{
if (sub < keylen)
{
goto fail;
}
else
{
len = keylen;
}
}
else if (buffer.MoveNext(max, ref idx, out len) == false)
{
goto fail;
}
var key = (keygen != null ? keygen.GetValue(buffer, idx, len) : (TK)indexConverter.GetValue(buffer, idx, len));
idx += len;
sub = max - idx;
if (vallen > 0)
{
if (sub < vallen)
{
goto fail;
}
else
{
len = vallen;
}
}
else if (buffer.MoveNext(max, ref idx, out len) == false)
{
goto fail;
}
var val = (valgen != null ? valgen.GetValue(buffer, idx, len) : (TV)elementConverter.GetValue(buffer, idx, len));
idx += len;
dictionary.Add(key, val);
}
}
catch (Exception ex) when(PacketException.WrapFilter(ex))
{
throw PacketException.ConvertError(ex);
}
return;
fail:
throw PacketException.Overflow();
}