public static BssomFieldOffsetInfo IndexOf(IBssomBuffer buffer, IIndexOfInputSource indexOfInputSource)
{
if (buffer is null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (indexOfInputSource is null)
{
throw new ArgumentNullException(nameof(indexOfInputSource));
}
BssomReader reader = new BssomReader(buffer);
BssomFieldOffsetInfo info = new BssomFieldOffsetInfo();
indexOfInputSource.Reset();
if (!indexOfInputSource.MoveNext())
{
throw BssomSerializationOperationException.InputDataSouceIsEmpty();
}
Next:
byte bssOjectType = reader.SkipBlankCharacterAndReadBssomType();
switch (bssOjectType)
{
case BssomType.Map1:
{
object key = indexOfInputSource.CurrentMapKey();
if (!BssMapKeyResolverProvider.TryGetBssMapKeyResolver(key.GetType(), out IBssMapKeyResolver resolver))
{
throw BssomSerializationTypeFormatterException.BssomMapKeyUnsupportedType(key.GetType());
}
reader.SkipVariableNumber(); //Skip Length
int count = reader.ReadVariableNumber();
Raw64BytesISegment keyISegment = resolver.GetMap1KeySegment(key);
for (int i = 0; i < count; i++)
{
int keyLength = reader.GetMap1KeyLength();
if (keyISegment.DataLen != keyLength)
{
reader.BssomBuffer.Seek(keyLength, BssomSeekOrgin.Current); //Advance Key
reader.SkipObject(); //Skip Value
continue;
}
//determine if the key is equal
bool keyIsEqual = true;
for (int z = 0; z < keyISegment.Length; z++)
{
if (keyISegment[z] != reader.ReadRaw64(ref keyLength))
{
reader.BssomBuffer.Seek(keyLength, BssomSeekOrgin.Current); //Advance remaining keyLength
reader.SkipObject(); //Skip Value
keyIsEqual = false;
break;
}
}
if (keyIsEqual)
{
if (!indexOfInputSource.MoveNext())
{
info.Offset = reader.Position;
info.IsArray1Type = false;
return(info);
}
else
{
goto Next;
}
}
}
if (indexOfInputSource.MoveNext())
{
throw BssomSerializationOperationException.BssomMapIsNull(key);
}
info.Offset = -1;
return(info);
}
case BssomType.Map2:
{
object key = indexOfInputSource.CurrentMapKey();
if (!BssMapKeyResolverProvider.TryGetBssMapKeyResolver(key.GetType(), out IBssMapKeyResolver resolver))
{
throw BssomSerializationTypeFormatterException.BssomMapKeyUnsupportedType(key.GetType());
}
UInt64BytesISegment keyISegment = resolver.GetMap2KeySegment(key);
BssMapHeadPackInfo aprp = BssMapHeadPackInfo.Create(ref reader);
if (aprp.MapHead.ElementCount > 0)
{
ref byte refb = ref reader.BssomBuffer.TryReadFixedRef(aprp.MapHead.RouteLength, out bool haveEnoughSizeAndCanBeFixed);
if (haveEnoughSizeAndCanBeFixed)
{
if (BssMapObjMarshalReader.TrySeek(keyISegment, resolver.KeyType, resolver.KeyIsNativeType, ref aprp, ref reader, ref refb))
{
if (!indexOfInputSource.MoveNext())
{
info.Offset = reader.Position;
info.IsArray1Type = false;
return(info);
}
else
{
goto Next;
}
}
}
else
{
if (BssMapObjMarshalReader.TrySeekSlow(keyISegment, resolver.KeyType, resolver.KeyIsNativeType, ref aprp, ref reader))
{
if (!indexOfInputSource.MoveNext())
{
info.Offset = reader.Position;
info.IsArray1Type = false;
return(info);
}
else
{
goto Next;
}
}
}
}
if (indexOfInputSource.MoveNext())
{
throw BssomSerializationOperationException.BssomMapIsNull(key);
}
info.Offset = -1;
return(info);
}
public static IEnumerable <KeyValuePair <TKey, BssomFieldOffsetInfo> > ReadAllKeysByMapType <TKey>(byte[] buffer, int start, int end, BssomFieldOffsetInfo offsetInfo, BssomSerializerOptions option = null)
{
return(ReadAllKeysByMapType <TKey>(new SimpleBufferWriter(buffer, start, end), offsetInfo, option));
}
public static bool TryWrite <T>(byte[] buffer, int start, int end, BssomFieldOffsetInfo offsetInfo, T value, BssomSerializerOptions option = null)
{
return(TryWrite(new SimpleBufferWriter(buffer, start, end), offsetInfo, value, option));
}
public static byte ReadValueTypeCode(byte[] buffer, int start, int end, BssomFieldOffsetInfo offsetInfo, out bool isNativeType)
{
return(ReadValueTypeCode(new SimpleBufferWriter(buffer, start, end), offsetInfo, out isNativeType));
}
public static int ReadArrayCount(byte[] buffer, int start, int end, BssomFieldOffsetInfo offsetInfo)
{
return(ReadArrayCountByMapType(new SimpleBufferWriter(buffer, start, end), offsetInfo));
}
public static T ReadValue <T>(byte[] buffer, int start, int end, BssomFieldOffsetInfo offsetInfo, BssomSerializerOptions option = null)
{
return(ReadValue <T>(new SimpleBufferWriter(buffer, start, end), offsetInfo, option));
}
public static BssomValueType ReadValueType(byte[] buffer, int start, int end, BssomFieldOffsetInfo offsetInfo)
{
return(ReadValueType(new SimpleBufferWriter(buffer, start, end), offsetInfo));
}
/// <summary>
/// 通过指定缓冲区的位置信息来读取Map对象的字段位置信息. Read the field location information of the Map object by specifying the location information of the buffer
/// </summary>
/// <typeparam name="TKey">Map对象的Key类型,如不确认可以为<see cref="object"/>. The Key type of the Map object, if not confirmed, it can be <seealso cref="object"/></typeparam>
/// <param name="offsetInfo">用于读取的位置信息. Location information for reading</param>
/// <param name="option">过程中所使用的配置. Configuration used in the process</param>
/// <returns>Map对象的字段位置信息. Field location information of the Map object</returns>
/// <exception cref="BssomSerializationOperationException">缓冲区<paramref name="offsetInfo"/>位置处的对象并不是Map类型,类型读取错误. The object at the position of the buffer <paramref name="offsetInfo"/> is not a Map type, and the type is read incorrectly</exception>
public IEnumerable <KeyValuePair <TKey, BssomFieldOffsetInfo> > ReadAllKeysByMapType <TKey>(BssomFieldOffsetInfo offsetInfo, BssomSerializerOptions option = null)
{
return(ReadAllKeysByMapType <TKey>(bufferWriter.GetBssomBuffer(), offsetInfo, option));
}
/// <summary>
/// <para>尝试在指定的位置对缓冲区进行对象写入</para>
/// <para>Attempt to write an object to the buffer at the specified location</para>
/// </summary>
/// <typeparam name="T">被写入元素的类型. The type of element being written</typeparam>
/// <param name="offsetInfo">用于写入元素的位置信息. Used to write the position information of the element</param>
/// <param name="value">被写入的对象. Value being written</param>
/// <param name="option">过程中所使用的配置. Configuration used in the process</param>
/// <returns>
/// <para>如果对象的二进制大小小于对象在缓冲区中的大小,则成功写入,返回true</para>
/// <para>If the binary size of the value is smaller than the size of the member in the buffer, it is successfully written and true is returned</para>
/// </returns>
public bool TryWrite <T>(BssomFieldOffsetInfo offsetInfo, T value, BssomSerializerOptions option = null)
{
return(TryWrite <T>(bufferWriter, offsetInfo, value, option));
}
/// <summary>
/// 通过指定缓冲区的位置信息来读取Array对象的元素数量. Read the number of elements of the Array object by specifying the location information of the buffer
/// </summary>
/// <param name="offsetInfo">用于读取元素的位置信息. Location information for reading</param>
/// <returns>Array对象的元素数量. The number of elements of the Array object</returns>
/// <exception cref="BssomSerializationOperationException">缓冲区<paramref name="offsetInfo"/>位置处的对象并不是Array类型,类型读取错误. The object at the position of the buffer <paramref name="offsetInfo"/> is not a Array type, and the type is read incorrectly</exception>
public int ReadArrayCountByMapType(BssomFieldOffsetInfo offsetInfo)
{
return(ReadArrayCountByMapType(bufferWriter.GetBssomBuffer(), offsetInfo));
}
/// <summary>
/// 通过指定缓冲区的位置信息来读取元素在缓冲区存储的大小(包括从此位置开始的空白符). Read the size of the element stored in the buffer by specifying the location information of the buffer(includes white space from this position)
/// </summary>
/// <param name="offsetInfo">用于读取元素的位置信息. Location information for reading</param>
/// <returns>被读取的元素大小,包含空白符大小. Element typecode being read size,contains the blank size</returns>
public int ReadValueSize(BssomFieldOffsetInfo offsetInfo)
{
return(ReadValueSize(bufferWriter.GetBssomBuffer(), offsetInfo));
}
/// <summary>
/// 通过指定缓冲区的位置信息来读取元素的类型码. Read the element typecode by specifying the location information of the buffer
/// </summary>
/// <param name="offsetInfo">用于读取元素的位置信息. Location information for reading</param>
/// <param name="isNativeType">若对象是本地类型,则为true. True if the object is a native type</param>
/// <returns>被读取的元素类型码. Element typecode being read</returns>
public byte ReadValueTypeCode(BssomFieldOffsetInfo offsetInfo, out bool isNativeType)
{
return(ReadValueTypeCode(bufferWriter.GetBssomBuffer(), offsetInfo, out isNativeType));
}
/// <summary>
/// 通过指定缓冲区的位置信息来读取元素的类型. Read the element type by specifying the location information of the buffer
/// </summary>
/// <param name="offsetInfo">用于读取的位置信息. Location information for reading</param>
/// <returns>被读取的元素类型. Element type being read</returns>
public BssomValueType ReadValueType(BssomFieldOffsetInfo offsetInfo)
{
return(ReadValueType(bufferWriter.GetBssomBuffer(), offsetInfo));
}
/// <summary>
/// 通过指定缓冲区的位置信息来读取元素. Read the element by specifying the location information of the buffer
/// </summary>
/// <typeparam name="T">被读取元素的类型,如不确认可以为<see cref="object"/>. The type of the read element, if not confirmed, it can be <seealso cref="object"/></typeparam>
/// <param name="offsetInfo">用于读取的位置信息. Location information for reading</param>
/// <param name="option">过程中所使用的配置. Configuration used in the process</param>
/// <returns>被读取的元素. Element being read</returns>
public T ReadValue <T>(BssomFieldOffsetInfo offsetInfo, BssomSerializerOptions option = null)
{
return(ReadValue <T>(bufferWriter.GetBssomBuffer(), offsetInfo, option));
}