firstRelevantFrame method

StackFrameInfo? firstRelevantFrame(StackTrace? stackTrace)

Returns the first relevant frame (method, file, line, column) from stackTrace, skipping debang and dart:runtime frames.

Implementation

StackFrameInfo? firstRelevantFrame(StackTrace? stackTrace) {
  if (stackTrace == null) return null;

  final fullTrace = stackTrace.toString();
  final methodMatch =
      RegExp(r'Method:\s+(.+?)(?=\s*(?:File:|\n#|\Z))', multiLine: true)
          .firstMatch(fullTrace);
  final fileMatch = RegExp(r'File:\s+(.+?):(\d+):(\d+)', multiLine: true)
      .firstMatch(fullTrace);

  if (methodMatch != null && fileMatch != null) {
    final method = methodMatch.group(1)?.trim();
    final path = fileMatch.group(1);
    final file = path?.split('/').last;
    final line = int.tryParse(fileMatch.group(2) ?? '');
    final column = int.tryParse(fileMatch.group(3) ?? '');

    return StackFrameInfo(
      method: method,
      path: path,
      file: file,
      line: line,
      column: column,
    );
  }

  final lines = fullTrace.split('\n');
  RegExpMatch? frame;
  for (final line in lines) {
    if (_debangPattern.hasMatch(line) ||
        _dartRuntimePattern.hasMatch(line) ||
        _flutterRuntimePattern.hasMatch(line)) {
      continue;
    }
    frame = _frameRegex.firstMatch(line);
    if (frame != null) break;
  }

  if (frame == null) return null;

  final method = frame.group(1);
  final path = frame.group(2);
  final file = frame.group(2)?.split('/').last;
  final line = int.tryParse(frame.group(3) ?? '');
  final column = int.tryParse(frame.group(4) ?? '');

  return StackFrameInfo(
    method: method,
    path: path,
    file: file,
    line: line,
    column: column,
  );
}