/// <summary>
/// Read the next char
/// </summary>
public CharInfo Read()
{
CharInfo res = CharInfo.EOF;
bool moveNextPosition = true;
// If unread char get the first
if (_UnreadBuffer.Count > 0)
{
res = _UnreadBuffer.Pop();
// We calculate the next position if the buffer is empty
moveNextPosition = _UnreadBuffer.Count == 0;
}
else
{
res = new CharInfo(Reader.Read(), Position);
// Add in buffer only if new char
if (_RegisteredBuffers != null)
{
foreach (var buffer in _RegisteredBuffers)
{
buffer.Push(res);
}
}
}
// Move the position ?
if (res != CharInfo.EOF && moveNextPosition)
{
_Position = res.Position;
if (res == '\n')
{
if (!_LastWasCR)
{
_Position = _Position.NextLine(true);
}
else
{
_Position = _Position.AddPosition(1);
}
}
else if (res == '\r')
{
_Position = _Position.NextLine(true);
}
else
{
_Position++;
}
}
_LastWasCR = res == '\r';
// Returns result
return(res);
}
public void TestNexLine()
{
var pos = new ParsePosition(17, 2, 7);
var pos2 = pos.NextLine();
var pos3 = pos2.NextLine(false);
Assert.Equal(17, pos.Position);
Assert.Equal(2, pos.Line);
Assert.Equal(7, pos.Column);
Assert.Equal(18, pos2.Position);
Assert.Equal(3, pos2.Line);
Assert.Equal(0, pos2.Column);
Assert.Equal(18, pos3.Position);
Assert.Equal(4, pos3.Line);
Assert.Equal(0, pos3.Column);
}