addLine method

void addLine(String? line, { SourceLocation? location, SourceSpan? span, })

Add a line, autoindenting to the current value of indent. Note, indentation is not inferred from the contents added to this printer. If a line starts or ends an indentation block, you need to also update indent accordingly. Also, indentation is not adapted for nested printers. If you add a NestedPrinter to this printer, its indentation is set separately and will not include any the indentation set here.

The location and span parameters indicate the corresponding source map location of line in the original input. Only one, location or span, should be provided at a time.

Implementation

void addLine(String? line, {SourceLocation? location, SourceSpan? span}) {
  if (location != null || span != null) {
    _flush();
    assert(location == null || span == null);
    if (location != null) _items.add(location);
    if (span != null) _items.add(span);
  }
  if (line == null) return;
  if (line != '') {
    // We don't indent empty lines.
    _indent(indent);
    _appendString(line);
  }
  _appendString('\n');
}