Function cmBlockCommand

Source/cmBlockCommand.cxx:142–201

} // anonymous namespace

bool cmBlockCommand(std::vector<std::string> const& args,
                    cmExecutionStatus& status)
{
  struct Arguments : public ArgumentParser::ParseResult
  {
    cm::optional<ArgumentParser::NonEmpty<std::vector<std::string>>> ScopeFor;
    ArgumentParser::MaybeEmpty<std::vector<std::string>> Propagate;
  };
  static auto const parser = cmArgumentParser<Arguments>{}
                               .Bind("SCOPE_FOR"_s, &Arguments::ScopeFor)
                               .Bind("PROPAGATE"_s, &Arguments::Propagate);
  std::vector<std::string> unrecognizedArguments;
  auto parsedArgs = parser.Parse(args, &unrecognizedArguments);

  if (!unrecognizedArguments.empty()) {
    status.SetError(cmStrCat("called with unsupported argument \"",
                             unrecognizedArguments[0], '"'));
    cmSystemTools::SetFatalErrorOccurred();
    return false;
  }

  if (parsedArgs.MaybeReportError(status.GetMakefile())) {
    cmSystemTools::SetFatalErrorOccurred();
    return true;
  }

  ScopeSet scopes;

  if (parsedArgs.ScopeFor) {
    for (auto const& scope : *parsedArgs.ScopeFor) {
      if (scope == "VARIABLES"_s) {
        scopes.insert(ScopeType::VARIABLES);
        continue;
      }
      if (scope == "POLICIES"_s) {
        scopes.insert(ScopeType::POLICIES);
        continue;
      }
      status.SetError(cmStrCat("SCOPE_FOR unsupported scope \"", scope, '"'));
      cmSystemTools::SetFatalErrorOccurred();
      return false;
    }
  } else {
    scopes = { ScopeType::VARIABLES, ScopeType::POLICIES };
  }
  if (!scopes.contains(ScopeType::VARIABLES) &&
      !parsedArgs.Propagate.empty()) {
    status.SetError(
      "PROPAGATE cannot be specified without a new scope for VARIABLES");
    cmSystemTools::SetFatalErrorOccurred();
    return false;
  }

  // create a function blocker
  auto fb = cm::make_unique<cmBlockFunctionBlocker>(
    &status.GetMakefile(), scopes, parsedArgs.Propagate);
  status.GetMakefile().AddFunctionBlocker(std::move(fb));