Function PrintCallStack

Source/cmMessenger.cxx:112–148

}

void PrintCallStack(std::ostream& out, cmListFileBacktrace bt,
                    cm::optional<std::string> const& topSource)
{
  // The call stack exists only if we have at least two calls on top
  // of the bottom.
  if (bt.Empty()) {
    return;
  }
  std::string lastFilePath = bt.Top().FilePath;
  bt = bt.Pop();
  if (bt.Empty()) {
    return;
  }

  bool first = true;
  for (; !bt.Empty(); bt = bt.Pop()) {
    cmListFileContext lfc = bt.Top();
    if (lfc.Name.empty() &&
        lfc.Line != cmListFileContext::DeferPlaceholderLine &&
        lfc.FilePath == lastFilePath) {
      // An entry with no function name is frequently preceded (in the stack)
      // by a more specific entry.  When this happens (as verified by the
      // preceding entry referencing the same file path), skip the less
      // specific entry, as we have already printed the more specific one.
      continue;
    }
    if (first) {
      first = false;
      out << "Call Stack (most recent call first):\n";
    }
    lastFilePath = lfc.FilePath;
    if (topSource) {
      lfc.FilePath = cmSystemTools::RelativeIfUnder(*topSource, lfc.FilePath);
    }
    out << "  " << lfc << '\n';
  }
}

} // anonymous namespace