FastSerialisationTypeConversionResult IFastSerialisationTypeConverter.GetDirectWriterIfPossible(Type sourceType, MemberSetterDetailsRetriever memberSetterDetailsRetriever)
{
if (sourceType == null)
{
throw new ArgumentNullException(nameof(sourceType));
}
if (memberSetterDetailsRetriever == null)
{
throw new ArgumentNullException(nameof(memberSetterDetailsRetriever));
}
if (!typeof(Type).IsAssignableFrom(sourceType))
{
return(null);
}
var sourceParameter = Expression.Parameter(sourceType, "source");
var writerParameter = Expression.Parameter(typeof(BinarySerialisationWriter), "writer");
return(FastSerialisationTypeConversionResult.ConvertTo(
sourceType,
typeof(string),
Expression.Lambda(
Expression.Call(
writerParameter,
_stringWriteMethod,
Expression.Property(sourceParameter, _assemblyQualifiedNameProperty)
),
sourceParameter,
writerParameter
)
));
}
FastSerialisationTypeConversionResult IFastSerialisationTypeConverter.GetDirectWriterIfPossible(Type sourceType, MemberSetterDetailsRetriever memberSetterDetailsRetriever)
{
if (sourceType == null)
{
throw new ArgumentNullException(nameof(sourceType));
}
if (memberSetterDetailsRetriever == null)
{
throw new ArgumentNullException(nameof(memberSetterDetailsRetriever));
}
if (!sourceType.IsGenericType)
{
return(null);
}
var genericTypeDefinition = sourceType.GetGenericTypeDefinition();
if (genericTypeDefinition != typeof(IEqualityComparer <>))
{
return(null);
}
var comparedType = sourceType.GetGenericArguments()[0];
if (_serialisationConverters.TryGetValue(comparedType, out var conversionResult))
{
return(conversionResult); // This may be null if the memberSetterDetailsRetriever call below returned null earlier
}
var defaultComparerType = typeof(DefaultEqualityComparer <>).MakeGenericType(comparedType);
var defaultComparerTypeWriter = memberSetterDetailsRetriever(defaultComparerType);
if (defaultComparerTypeWriter == null)
{
// Since the DefaultEqualityComparer class is so simple, I wouldn't expect memberSetterDetailsRetriever to return null but it's
// possible and so it needs to be handled - the null will be added to the cache dictionary to avoid repeating this work later on
conversionResult = null;
}
else
{
var writerParameter = Expression.Parameter(typeof(BinarySerialisationWriter), "writer");
conversionResult = FastSerialisationTypeConversionResult.ConvertTo(
type: sourceType,
convertedToType: defaultComparerType,
memberSetter: Expression.Lambda(
Expression.Invoke(
defaultComparerTypeWriter.MemberSetter,
Expression.MakeMemberAccess(null, defaultComparerType.GetProperty("Instance", BindingFlags.Public | BindingFlags.Static)),
writerParameter
),
Expression.Parameter(sourceType, "source"),
writerParameter
)
);
}
return(_serialisationConverters.GetOrAdd(sourceType, conversionResult));
}
FastSerialisationTypeConversionResult IFastSerialisationTypeConverter.GetDirectWriterIfPossible(Type sourceType, MemberSetterDetailsRetriever memberSetterDetailsRetriever)
{
if (sourceType == null)
{
throw new ArgumentNullException(nameof(sourceType));
}
if (memberSetterDetailsRetriever == null)
{
throw new ArgumentNullException(nameof(memberSetterDetailsRetriever));
}
return((sourceType == typeof(SerializationInfo))
? FastSerialisationTypeConversionResult.SetToDefault(sourceType)
: null);
}
FastSerialisationTypeConversionResult IFastSerialisationTypeConverter.GetDirectWriterIfPossible(Type sourceType, MemberSetterDetailsRetriever memberSetterDetailsRetriever)
{
if (sourceType == null)
{
throw new ArgumentNullException(nameof(sourceType));
}
if (memberSetterDetailsRetriever == null)
{
throw new ArgumentNullException(nameof(memberSetterDetailsRetriever));
}
var serialiser = TryToGetListSerialiserFromCache(sourceType);
if (serialiser == null)
{
return(null);
}
var flattenedType = typeof(FlattenedImmutableList <>).MakeGenericType(serialiser.ElementType);
var flattenedTypeWriter = memberSetterDetailsRetriever(flattenedType);
if (flattenedTypeWriter == null)
{
return(null);
}
var sourceParameter = Expression.Parameter(sourceType, "source");
var writerParameter = Expression.Parameter(typeof(BinarySerialisationWriter), "writer");
return(FastSerialisationTypeConversionResult.ConvertTo(
sourceType,
flattenedType,
Expression.Lambda(
Expression.Invoke(
flattenedTypeWriter.MemberSetter,
Expression.New(
flattenedType.GetConstructor(new[] { serialiser.ElementType.MakeArrayType() }),
GetToArrayCall(sourceParameter, sourceType, serialiser.ElementType)
),
writerParameter
),
sourceParameter,
writerParameter
)
));
}