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