Function cmIfCommand

Source/cmIfCommand.cxx:180–219

=========================================================================

//=========================================================================
bool cmIfCommand(std::vector<cmListFileArgument> const& args,
                 cmExecutionStatus& inStatus)
{
  cmMakefile& makefile = inStatus.GetMakefile();
  std::string errorString;

  std::vector<cmExpandedCommandArgument> expandedArguments;
  makefile.ExpandArguments(args, expandedArguments);

  MessageType status;

  cmConditionEvaluator conditionEvaluator(makefile, makefile.GetBacktrace());

  bool isTrue =
    conditionEvaluator.IsTrue(expandedArguments, errorString, status);

  if (!errorString.empty()) {
    std::string err =
      cmStrCat("if ", cmIfCommandError(expandedArguments), errorString);
    if (status == MessageType::FATAL_ERROR) {
      makefile.IssueMessage(MessageType::FATAL_ERROR, err);
      cmSystemTools::SetFatalErrorOccurred();
      return true;
    }
    makefile.IssueMessage(status, err);
  }

  {
    auto fb = cm::make_unique<cmIfFunctionBlocker>();
    // if is isn't true block the commands
    fb->IsBlocking = !isTrue;
    if (isTrue) {
      fb->HasRun = true;
    }
    fb->Args = args;
    makefile.AddFunctionBlocker(std::move(fb));
  }

  return true;
}