/// <summary>
/// Forms a slice out of the given <see cref="ReadableBuffer"/>, beginning at 'start', and is at most length bytes
/// </summary>
/// <param name="start">The index at which to begin this slice.</param>
/// <param name="length">The length of the slice</param>
public ReadableBuffer Slice(long start, long length)
{
var begin = ReadCursorOperations.Seek(BufferStart, BufferEnd, start, false);
var end = ReadCursorOperations.Seek(begin, BufferEnd, length, false);
return(new ReadableBuffer(begin, end));
}
/// <summary>
/// Forms a slice out of the given <see cref="ReadableBuffer"/>, beginning at 'start', ending at 'end' (inclusive).
/// </summary>
/// <param name="start">The index at which to begin this slice.</param>
/// <param name="end">The end (inclusive) of the slice</param>
public ReadableBuffer Slice(long start, ReadCursor end)
{
ReadCursorOperations.BoundsCheck(BufferEnd, end);
var begin = ReadCursorOperations.Seek(BufferStart, end, start);
return(new ReadableBuffer(begin, end));
}
public ReadCursor Move(ReadCursor cursor, long count)
{
if (count < 0)
{
throw new ArgumentOutOfRangeException(nameof(count));
}
return(ReadCursorOperations.Seek(cursor, BufferEnd, count, false));
}
/// <summary>
/// Forms a slice out of the given <see cref="ReadableBuffer"/>, beginning at 'start', and is at most length bytes
/// </summary>
/// <param name="start">The starting (inclusive) <see cref="ReadCursor"/> at which to begin this slice.</param>
/// <param name="length">The length of the slice</param>
public ReadableBuffer Slice(ReadCursor start, long length)
{
ReadCursorOperations.BoundsCheck(BufferEnd, start);
var end = ReadCursorOperations.Seek(start, BufferEnd, length, false);
return(new ReadableBuffer(start, end));
}
/// <summary>
/// Forms a slice out of the given <see cref="ReadableBuffer"/>, beginning at 'start', ending at the existing <see cref="ReadableBuffer"/>'s end.
/// </summary>
/// <param name="start">The start index at which to begin this slice.</param>
public ReadableBuffer Slice(long start)
{
if (start == 0)
{
return(this);
}
var begin = ReadCursorOperations.Seek(BufferStart, BufferEnd, start, false);
return(new ReadableBuffer(begin, BufferEnd));
}