public bit_field_info(int offset, int bit_offset, int bit_size, bool bigendian = false)
{
_offset = offset;
_size = System.Runtime.InteropServices.Marshal.SizeOf(typeof(T));
_bit_offset = bit_offset;
_bit_size = bit_size;
if ((bit_offset > (8 * _size)) || (bit_size > (8 * _size)))
{
throw new ArgumentException();
}
if (BitConverter.IsLittleEndian == !bigendian)
{
_mask = (~0ul >> (64 - bit_size)) << bit_offset;
if (_size <= 1)
{
_getter = get_byte;
_setter = set_byte;
}
else if (_size <= 2)
{
_getter = get_ushort;
_setter = set_ushort;
}
else if (_size <= 4)
{
_getter = get_uint;
_setter = set_uint;
}
else if (_size <= 8)
{
_getter = get_ulong;
_setter = set_ulong;
}
else
{
throw new ArgumentException();
}
}
else
{
_mask = (~0ul << (64 - bit_size)) >> bit_offset;
byte[] temp = BitConverter.GetBytes(_mask);
Array.Reverse(temp);
_mask = BitConverter.ToUInt64(temp, 0);
if (_size <= 1)
{
_getter = get_byte;
_setter = set_byte;
}
else if (_size <= 2)
{
_getter = get_ushort_swp;
_setter = set_ushort_swp;
}
else if (_size <= 4)
{
_getter = get_uint_swp;
_setter = set_uint_swp;
}
else if (_size <= 8)
{
_getter = get_ulong_swp;
_setter = set_ulong_swp;
}
else
{
throw new ArgumentException();
}
}
}
public value_field_info(int offset, bool bigendian = false)
{
Type type = typeof(T);
_offset = offset;
_bigendian = bigendian;
if (type == typeof(byte))
{
_size = sizeof(byte);
_getter = get_byte;
_setter = set_byte;
}
else if (type == typeof(sbyte))
{
_size = sizeof(sbyte);
_getter = get_sbyte;
_setter = set_sbyte;
}
else if (BitConverter.IsLittleEndian == !bigendian)
{
if (type == typeof(short))
{
_size = sizeof(short);
_getter = get_short;
_setter = set_short;
}
else if (type == typeof(ushort))
{
_size = sizeof(ushort);
_getter = get_ushort;
_setter = set_ushort;
}
else if (type == typeof(int))
{
_size = sizeof(int);
_getter = get_int;
_setter = set_int;
}
else if (type == typeof(uint))
{
_size = sizeof(uint);
_getter = get_uint;
_setter = set_uint;
}
else if (type == typeof(long))
{
_size = sizeof(long);
_getter = get_long;
_setter = set_long;
}
else if (type == typeof(ulong))
{
_size = sizeof(ulong);
_getter = get_ulong;
_setter = set_ulong;
}
else
{
throw new ArgumentException();
}
}
else
{
if (type == typeof(short))
{
_size = sizeof(short);
_getter = get_short_swp;
_setter = set_short_swp;
}
else if (type == typeof(ushort))
{
_size = sizeof(ushort);
_getter = get_ushort_swp;
_setter = set_ushort_swp;
}
else if (type == typeof(int))
{
_size = sizeof(int);
_getter = get_int_swp;
_setter = set_int_swp;
}
else if (type == typeof(uint))
{
_size = sizeof(uint);
_getter = get_uint_swp;
_setter = set_uint_swp;
}
else if (type == typeof(long))
{
_size = sizeof(long);
_getter = get_long_swp;
_setter = set_long_swp;
}
else if (type == typeof(ulong))
{
_size = sizeof(ulong);
_getter = get_ulong_swp;
_setter = set_ulong_swp;
}
else
{
throw new ArgumentException();
}
}
}