Line data    Source code

       1            0 : // Distributed under the MIT License.
       2              : // See LICENSE.txt for details.
       3              : 
       4              : #pragma once
       5              : 
       6              : #include <string>
       7              : #include <unordered_set>
       8              : #include <vector>
       9              : 
      10              : #include "DataStructures/DataBox/TagName.hpp"
      11              : #include "Options/Context.hpp"
      12              : #include "Options/ParseError.hpp"
      13              : #include "Utilities/Algorithm.hpp"
      14              : #include "Utilities/StdHelpers.hpp"
      15              : #include "Utilities/TMPL.hpp"
      16              : 
      17              : namespace db {
      18              : 
      19              : /*!
      20              :  * \brief Validate that the selected names are a subset of the given tags.
      21              :  *
      22              :  * The possible choices for the selection are the `db::tag_name`s of the `Tags`.
      23              :  *
      24              :  * \tparam Tags List of possible tags.
      25              :  * \param selected_names Names to validate.
      26              :  * \param context Options context for error reporting.
      27              :  */
      28              : template <typename Tags>
      29            1 : void validate_selection(const std::vector<std::string>& selected_names,
      30              :                         const Options::Context& context) {
      31              :   using ::operator<<;
      32              :   std::unordered_set<std::string> valid_names{};
      33              :   tmpl::for_each<Tags>([&valid_names](auto tag_v) {
      34              :     using tag = tmpl::type_from<std::decay_t<decltype(tag_v)>>;
      35              :     valid_names.insert(db::tag_name<tag>());
      36              :   });
      37              :   for (const auto& name : selected_names) {
      38              :     if (valid_names.find(name) == valid_names.end()) {
      39              :       PARSE_ERROR(context, "Invalid selection: " << name
      40              :                                                  << ". Possible choices are: "
      41              :                                                  << valid_names << ".");
      42              :     }
      43              :     if (alg::count(selected_names, name) != 1) {
      44              :       PARSE_ERROR(context, name << " specified multiple times");
      45              :     }
      46              :   }
      47              : }
      48              : 
      49              : }  // namespace db