public static X To <O, X>(O from, X defaultVal = default, CastingContext context = null, IObjectMapper mapper = null)
{
var oType = typeof(O);
var xType = typeof(X);
var oTypeNullableFlag = Types.IsNullableType(oType);
var xTypeNullableFlag = Types.IsNullableType(xType);
context ??= CastingContext.DefaultContext;
if (xType.IsValueType && defaultVal is null)
{
defaultVal = Activator.CreateInstance <X>();
}
if (from is null)
{
return(defaultVal);
}
if (oType == xType)
{
return(from.AsOrDefault(defaultVal));
}
if (CustomConvertManager.TryGetConvertHandler(oType, xType, out var handler))
{
return((handler?.Invoke(from)).As <X>() ?? defaultVal);
}
if (from is string strFrom)
{
return(FromStringTo(strFrom, xType, xTypeNullableFlag, defaultVal));
}
if (from is DateTime dtFrom)
{
return(FromDateTimeTo(dtFrom, context, xType, xTypeNullableFlag, defaultVal));
}
if (from is bool boolFrom)
{
return(FromBooleanTo(boolFrom, context, xType, xTypeNullableFlag, defaultVal));
}
if (TypeDeterminer.IsEnumType(oType))
{
return(FromEnumTo(oType, from, context, xType, xTypeNullableFlag, defaultVal));
}
if (TypeDeterminer.IsNullableNumericType(oType) || Types.IsNumericType(oType))
{
return(FromNumericTo(oType, oTypeNullableFlag, from, context, xType, xTypeNullableFlag, defaultVal));
}
if (from is Guid guid)
{
return(FromGuidTo(guid, context, xType, xTypeNullableFlag, defaultVal));
}
if (TypeDeterminer.IsNullableGuidType(oType))
{
return(FromNullableGuidTo(from.As <Guid?>(), context, xType, xTypeNullableFlag, defaultVal));
}
if (from is IConvertible)
{
return(Convert.ChangeType(from, xType).As <X>());
}
if (oType == TypeClass.ObjectClazz)
{
return(FromObjTo(from, context, xType, xTypeNullableFlag, defaultVal));
}
if (xType == TypeClass.ObjectClazz)
{
return(from.As <X>());
}
if (xType.IsAssignableFrom(oType))
{
return(from.As <X>());
}
if (mapper != null)
{
return(mapper.MapTo <O, X>(from));
}
try
{
return(from.As <X>());
}
catch
{
try
{
return(DefaultMapper.Instance.MapTo <O, X>(from));
}
catch
{
return(xTypeNullableFlag ? default : defaultVal);
}
}
}
public static object To(object from, Type sourceType, Type targetType,
object defaultVal = default, CastingContext context = null, IObjectMapper mapper = null)
{
var oType = sourceType;
var xType = targetType;
var oTypeNullableFlag = Types.IsNullableType(oType);
var xTypeNullableFlag = Types.IsNullableType(xType);
context ??= CastingContext.DefaultContext;
if (xType.IsValueType && defaultVal is null)
{
defaultVal = Activator.CreateInstance(xType);
}
if (from is null)
{
return(defaultVal);
}
if (oType == xType)
{
return(from.AsOrDefault(defaultVal));
}
if (from is string strFrom)
{
return(FromStringTo(strFrom, xType, xTypeNullableFlag, defaultVal));
}
if (from is DateTime dtFrom)
{
return(FromDateTimeTo(dtFrom, context, xType, xTypeNullableFlag, defaultVal));
}
if (from is bool boolFrom)
{
return(FromBooleanTo(boolFrom, context, xType, xTypeNullableFlag, defaultVal));
}
if (TypeDeterminer.IsEnumType(oType))
{
return(FromEnumTo(oType, from, context, xType, xTypeNullableFlag, defaultVal));
}
if (TypeDeterminer.IsNullableNumericType(oType) || Types.IsNumericType(oType))
{
return(FromNumericTo(oType, oTypeNullableFlag, from, context, xType, xTypeNullableFlag, defaultVal));
}
if (from is Guid guid)
{
return(FromGuidTo(guid, context, xType, xTypeNullableFlag, defaultVal));
}
if (TypeDeterminer.IsNullableGuidType(oType))
{
return(FromNullableGuidTo(from.As <Guid?>(), context, xType, xTypeNullableFlag, defaultVal));
}
if (from is IConvertible)
{
return(Convert.ChangeType(from, xType));
}
if (oType == TypeClass.ObjectClazz)
{
return(FromObjTo(from, oType, context, xType, xTypeNullableFlag, defaultVal));
}
if (xType == TypeClass.ObjectClazz)
{
return(Convert.ChangeType(from, xType));
}
if (xType.IsAssignableFrom(oType))
{
return(from);
}
if (mapper != null)
{
return(mapper.MapTo(oType, xType, from));
}
try
{
return(Convert.ChangeType(from, xType, context.FormatProvider).AsOrDefault(defaultVal));
}
catch
{
try
{
return(DefaultMapper.Instance.MapTo(oType, xType, from));
}
catch
{
return(xTypeNullableFlag ? default : defaultVal);
}
}
}
