Function cmCMakeLanguageCommand

Source/cmCMakeLanguageCommand.cxx:365–578

}

bool cmCMakeLanguageCommand(std::vector<cmListFileArgument> const& args,
                            cmExecutionStatus& status)
{
  std::vector<std::string> expArgs;
  size_t rawArg = 0;
  size_t expArg = 0;

  // Helper to consume and expand one raw argument at a time.
  auto moreArgs = [&]() -> bool {
    while (expArg >= expArgs.size()) {
      if (rawArg >= args.size()) {
        return false;
      }
      std::vector<cmListFileArgument> tmpArg;
      tmpArg.emplace_back(args[rawArg++]);
      status.GetMakefile().ExpandArguments(tmpArg, expArgs);
    }
    return true;
  };
  auto finishArgs = [&]() {
    std::vector<cmListFileArgument> tmpArgs(args.begin() + rawArg, args.end());
    status.GetMakefile().ExpandArguments(tmpArgs, expArgs);
    rawArg = args.size();
  };

  if (!moreArgs()) {
    return FatalError(status, "called with incorrect number of arguments");
  }
  if (expArgs[expArg] == "EXIT"_s) {
    ++expArg; // consume "EXIT".

    if (!moreArgs()) {
      return FatalError(status, "EXIT requires one argument");
    }

    if (!status.GetMakefile().GetCMakeInstance()->RoleSupportsExitCode()) {
      return FatalError(status, "EXIT can be used only in SCRIPT mode");
    }

    long retCode = 0;

    if (!cmStrToLong(expArgs[expArg], &retCode)) {
      return FatalError(status,
                        cmStrCat("EXIT requires one integral argument, got \"",
                                 expArgs[expArg], '\"'));
    }

    status.SetExitCode(static_cast<int>(retCode));
    return true;
  }

  if (expArgs[expArg] == "SET_DEPENDENCY_PROVIDER"_s) {
    finishArgs();
    return cmCMakeLanguageCommandSET_DEPENDENCY_PROVIDER(expArgs, status);
  }

  cm::optional<Defer> maybeDefer;
  if (expArgs[expArg] == "DEFER"_s) {