compareProfileMethods function

ProfileMethodComparison compareProfileMethods({ required ProfileMethodInspection baseline, required ProfileMethodInspection current, int? relationLimit, })

Compares one selected method across two inspected profiles.

Implementation

ProfileMethodComparison compareProfileMethods({
  required ProfileMethodInspection baseline,
  required ProfileMethodInspection current,
  int? relationLimit,
}) {
  final warnings = <String>[];
  final baselineMethod = baseline.method;
  final currentMethod = current.method;

  final status = switch ((baseline.status, current.status)) {
    (
      ProfileMethodInspectionStatus.found,
      ProfileMethodInspectionStatus.found,
    ) =>
      ProfileMethodComparisonStatus.compared,
    (ProfileMethodInspectionStatus.unavailable, _) ||
    (
      _,
      ProfileMethodInspectionStatus.unavailable,
    ) => ProfileMethodComparisonStatus.unavailable,
    (ProfileMethodInspectionStatus.found, _) ||
    (
      _,
      ProfileMethodInspectionStatus.found,
    ) => ProfileMethodComparisonStatus.partial,
    _ => ProfileMethodComparisonStatus.unresolved,
  };

  if (baseline.status != current.status) {
    warnings.add(
      'The compared method lookup statuses differ: '
      '${baseline.status.name} vs ${current.status.name}.',
    );
  }

  if (baselineMethod != null &&
      currentMethod != null &&
      baselineMethod.methodId != currentMethod.methodId) {
    warnings.add(
      'The resolved method ids differ between baseline and current: '
      '"${baselineMethod.methodId}" vs "${currentMethod.methodId}".',
    );
  }

  if (baseline.message != null &&
      current.message != null &&
      baseline.message != current.message) {
    warnings.add('The baseline and current method resolution details differ.');
  }

  final methodDelta = switch ((baselineMethod, currentMethod)) {
    (final ProfileMethodSummary left, final ProfileMethodSummary right) =>
      _buildMethodDelta(left, right),
    _ => null,
  };

  final callerDeltas = switch ((baselineMethod, currentMethod)) {
    (final ProfileMethodSummary left, final ProfileMethodSummary right) =>
      _limitList(
        _buildRelationDeltas(left.callers, right.callers),
        relationLimit,
      ),
    _ => const <ProfileMethodRelationDelta>[],
  };

  final calleeDeltas = switch ((baselineMethod, currentMethod)) {
    (final ProfileMethodSummary left, final ProfileMethodSummary right) =>
      _limitList(
        _buildRelationDeltas(left.callees, right.callees),
        relationLimit,
      ),
    _ => const <ProfileMethodRelationDelta>[],
  };

  return ProfileMethodComparison(
    query: baseline.query,
    queryKind: baseline.queryKind,
    status: status,
    baseline: baseline,
    current: current,
    methodDelta: methodDelta,
    callerDeltas: callerDeltas,
    calleeDeltas: calleeDeltas,
    warnings: warnings,
  );
}