Method generateConstexprDefines

generator/VulkanHppGenerator.cpp:4734–4894

}

std::string VulkanHppGenerator::generateConstexprDefines() const
{
  auto const constexprFunctionTemplate = std::string{ R"(  template <typename T, typename = typename std::enable_if<std::is_integral<T>::value>::type>
  VULKAN_HPP_CONSTEXPR uint32_t ${constName}( ${arguments} )
  {
    return ${implementation};
  }
)" };
  auto const constexprCallTemplate     = std::string{ R"(  VULKAN_HPP_CONSTEXPR_INLINE auto ${constName} = ${callee}( ${arguments} );
)" };
  auto const constexprValueTemplate    = std::string{ R"(  VULKAN_HPP_CONSTEXPR_INLINE ${type} ${constName} = ${value};
)" };

  // handle the value and callee macros first so they are visible for use in functions below.

  auto constexprDefines = std::string{ R"(
  //===========================
  //=== CONSTEXPR CONSTANTs ===
  //===========================
)" };

  {
    auto const generateConstantsAndProtection =
      [&constexprValueTemplate, this]( std::vector<RequireData> const & requireData, std::string const & title, std::set<std::string> & listedConstants )
    {
      std::string constants;
      forEachRequiredConstant( requireData,
                               listedConstants,
                               [&constants, &constexprValueTemplate, this]( std::pair<std::string, Constant> const & constantData )
                               {
                                 constants += replaceWithMap( constexprValueTemplate,
                                                              { { "type", constantData.second.type },
                                                                { "constName", generateTaggedCamelCase( constantData.first ) },
                                                                { "value", constantData.first } } );
                               } );
      return addTitleAndProtection( title, constants );
    };

    std::set<std::string> listedConstants;
    for ( auto const & feature : m_features )
    {
      constexprDefines += generateConstantsAndProtection( feature.requireData, feature.name, listedConstants );
    }
    for ( auto const & extension : m_extensions )
    {
      constexprDefines += generateConstantsAndProtection( extension.requireData, extension.name, listedConstants );
    }
  }

  // values
  constexprDefines += R"(
  //========================
  //=== CONSTEXPR VALUEs ===
  //========================
)";
  for ( auto const & [macro, data] : m_definesPartition.values )
  {
    // make `macro` PascalCase and strip the `Vk` prefix