private object ReadCol(Sqlite3Statement stmt, int index, ColType type, Type clrType, object defaultValue)
{
if (type == ColType.Null)
{
return(defaultValue);
}
else
{
var clrTypeInfo = clrType.GetTypeInfo();
if (clrType == typeof(String))
{
return(SQLite3.ColumnStringUTF8(stmt, index));
}
else if (clrType == typeof(Int32))
{
return((int)SQLite3.ColumnInt32(stmt, index));
}
else if (clrType == typeof(Boolean))
{
return(SQLite3.ColumnInt32(stmt, index) == 1);
}
else if (clrType == typeof(double))
{
return(SQLite3.ColumnDouble(stmt, index));
}
else if (clrType == typeof(float))
{
return((float)SQLite3.ColumnDouble(stmt, index));
}
else if (clrType == typeof(TimeSpan))
{
return(new TimeSpan(SQLite3.ColumnInt64(stmt, index)));
}
else if (clrType == typeof(DateTime))
{
if (Connection.StoreDateTimeAsTicks)
{
return(new DateTime(SQLite3.ColumnInt64(stmt, index)));
}
else
{
var text = SQLite3.ColumnStringUTF8(stmt, index);
DateTime resultDate;
if (!DateTime.TryParseExact(text, DateTimeExactStoreFormat, System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.None, out resultDate))
{
resultDate = DateTime.Parse(text);
}
return(resultDate);
}
}
else if (clrType == typeof(DateTimeOffset))
{
var value = SQLite3.ColumnInt64(stmt, index);
// if the date goes outside the bounds of a valid date time, we need to consider the date as corrupted by
// either the disk or some other process, and in that case the date cannot be trusted. With this in mind
// we are going to use the default value if the date has been corrupted.
if (value < DateTimeOffset.MinValue.Ticks || value > DateTimeOffset.MaxValue.Ticks)
{
return(defaultValue);
}
return(new DateTimeOffset(value, TimeSpan.Zero));
}
else if (clrTypeInfo.IsEnum)
{
if (type == ColType.Text)
{
var value = SQLite3.ColumnStringUTF8(stmt, index);
return(Enum.Parse(clrType, value, true));
}
else
{
var value = SQLite3.ColumnInt32(stmt, index);
var enumCache = EnumCache.GetInfo(clrType);
return(enumCache.GetEnumFromInt32Value(value));
}
}
else if (clrType == typeof(Int64))
{
return(SQLite3.ColumnInt64(stmt, index));
}
else if (clrType == typeof(UInt32))
{
return((uint)SQLite3.ColumnInt64(stmt, index));
}
else if (clrType == typeof(decimal))
{
return((decimal)SQLite3.ColumnDouble(stmt, index));
}
else if (clrType == typeof(Byte))
{
return((byte)SQLite3.ColumnInt32(stmt, index));
}
else if (clrType == typeof(UInt16))
{
return((ushort)SQLite3.ColumnInt32(stmt, index));
}
else if (clrType == typeof(Int16))
{
return((short)SQLite3.ColumnInt32(stmt, index));
}
else if (clrType == typeof(sbyte))
{
return((sbyte)SQLite3.ColumnInt32(stmt, index));
}
else if (clrType == typeof(byte[]))
{
return(SQLite3.ColumnByteArray(stmt, index));
}
else if (clrType == typeof(Guid))
{
var text = SQLite3.ColumnStringUTF8(stmt, index);
return(new Guid(text));
}
else if (clrType == typeof(Uri))
{
var text = SQLite3.ColumnStringUTF8(stmt, index);
return(new Uri(text));
}
else if (clrType == typeof(StringBuilder))
{
var text = SQLite3.ColumnStringUTF8(stmt, index);
return(new StringBuilder(text));
}
else if (clrType == typeof(UriBuilder))
{
var text = SQLite3.ColumnStringUTF8(stmt, index);
return(new UriBuilder(text));
}
else
{
throw new NotSupportedException("Don't know how to read " + clrType);
}
}
}