/// <summary>
/// Appends the specified line to this instance.
/// </summary>
/// <param name="slice">The slice.</param>
/// <param name="column">The column.</param>
/// <param name="line">The line.</param>
/// <param name="sourceLinePosition"></param>
public void AppendLine(ref StringSlice slice, int column, int line, int sourceLinePosition)
{
if (Lines.Lines == null)
{
Lines = new StringLineGroup(4);
}
var stringLine = new StringLine(ref slice, line, column, sourceLinePosition);
// Regular case, we are not in the middle of a tab
if (slice.CurrentChar != '\t' || !CharHelper.IsAcrossTab(column))
{
Lines.Add(ref stringLine);
}
else
{
// We need to expand tabs to spaces
var builder = StringBuilderCache.Local();
for (int i = column; i < CharHelper.AddTab(column); i++)
{
builder.Append(' ');
}
builder.Append(slice.Text, slice.Start + 1, slice.Length - 1);
stringLine.Slice = new StringSlice(builder.ToString());
Lines.Add(ref stringLine);
}
}
/// <summary>
/// Returns the next character in the line taking into space taken by tabs. Update <see cref="Start"/> and <see cref="Column"/>.
/// </summary>
public void NextColumn()
{
var c = Line.CurrentChar;
// If we are across a tab, we should just add 1 column
if (c == '\t' && CharHelper.IsAcrossTab(Column))
{
Column++;
}
else
{
Line.NextChar();
Column++;
}
}