/// <summary>
/// Gets the row and column of the given position.
/// </summary>
/// <param name="position">Position to get the row and column of.</param>
/// <param name="row">Resulting row.</param>
/// <param name="column">Resulting column.</param>
public void GetRowColumn(Position position, out int row, out int column)
{
int pos = 0, next;
// count the number of newlines until the offset
row = 1;
while ((next = _input.IndexOf('\n', pos, position.Offset - pos)) >= 0) {
row++;
pos = next + 1;
}
// get the start column
column = position.Offset - pos + 1;
}
/// <summary>
/// Gets the start and end row and column of the given position.
/// </summary>
/// <param name="position">Position to get the row and column of.</param>
/// <param name="startRow">Resulting start row.</param>
/// <param name="startColumn">Resulting start column.</param>
/// <param name="endRow">Resulting end row.</param>
/// <param name="endColumn">Resulting end column.</param>
public void GetRowColumn(Position position,
out int startRow,
out int startColumn,
out int endRow,
out int endColumn)
{
// get start row and column first
GetRowColumn(position, out startRow, out startColumn);
// count the number of newlines until we're at the end
int pos = position.Offset - startColumn + 1, next;
endRow = startRow;
while ((next = _input.IndexOf('\n', pos, position.Offset + position.Length - pos)) >= 0) {
endRow++;
pos = next + 1;
}
// get the end column
endColumn = position.Offset + position.Length - pos + 1;
}
/// <summary>
/// Reports a warning message at the specified position.
/// </summary>
/// <param name="position">Position the error occurred.</param>
/// <param name="message">Error message.</param>
protected void Warning(Position position, string message)
{
_observer.Warning(position, message);
}
/// <summary>
/// Reports an error message at the specified position.
/// </summary>
/// <param name="position">Position the error occurred.</param>
/// <param name="message">Error message.</param>
protected void Error(Position position, string message)
{
_observer.Error(position, message);
}