Method Evaluate

Source/cmGeneratorExpressionNode.cxx:3653–3701

  int NumExpectedParameters() const override { return 3; }

  std::string Evaluate(
    std::vector<std::string> const& parameters, cm::GenEx::Evaluation* eval,
    GeneratorExpressionContent const* content,
    cmGeneratorExpressionDAGChecker* /*dagCheckerParent*/) const override
  {
    static cmsys::RegularExpression propertyNameValidator("^[A-Za-z0-9_]+$");

    std::string const& fileSetName = parameters.front();
    std::string const& propertyName = parameters.back();

    if (fileSetName.empty() && propertyName.empty()) {
      reportError(eval, content->GetOriginalExpression(),
                  "$<FILE_SET_PROPERTY:fileset,TARGET:tgt,prop> expression "
                  "requires a non-empty FILE_SET name and property name.");
      return std::string{};
    }
    if (fileSetName.empty()) {
      reportError(
        eval, content->GetOriginalExpression(),
        "$<FILE_SET_PROPERTY:fileset,TARGET:tgt,prop> expression requires a "
        "non-empty FILE_SET name.");
      return std::string{};
    }
    if (propertyName.empty()) {
      reportError(
        eval, content->GetOriginalExpression(),
        "$<FILE_SET_PROPERTY:fileset,TARGET:tgt,prop> expression requires a "
        "non-empty property name.");
      return std::string{};
    }
    if (!propertyNameValidator.find(propertyName)) {
      reportError(eval, content->GetOriginalExpression(),
                  "Property name not supported.");
      return std::string{};
    }

    cmFileSet* fileSet = nullptr;
    if (!GetFileSet(parameters, eval, content, fileSet)) {
      return std::string{};
    }
    if (!fileSet) {
      reportError(
        eval, content->GetOriginalExpression(),
        cmStrCat("FILE_SET \"", fileSetName, "\" is not known from CMake."));
      return std::string{};
    }

    return fileSet->GetProperty(propertyName);
  }
} fileSetPropertyNode;

namespace {