public static object FFIConvertFrom <T>(T value)
{
var tc = Type.GetTypeCode(typeof(T));
switch (tc)
{
case TypeCode.Int32:
case TypeCode.Double:
return(value);
case TypeCode.UInt32:
case TypeCode.Int64:
case TypeCode.UInt64:
return(Builtins.ToIntegerIfPossible(GetValue(value)));
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Byte:
case TypeCode.SByte:
return(Convert.ToInt32(value));
case TypeCode.Single:
return(Convert.ToDouble(value));
case TypeCode.String:
return(Convert.ToString(value));
default:
if (typeof(T) == typeof(IntPtr) ||
typeof(T) == typeof(UIntPtr))
{
return(value);
}
return(Builtins.AssertionViolation("FFIConvertTo", "not a known ffi type", value, typeof(T)));
}
}
// helper
public static object LongToBignum(long l)
{
return(Builtins.ToIntegerIfPossible(new BigInteger(l)));
}