cmake::Workflow: Refactor to use enum class argument

Source/cmake.cxx

@@ -3732,7 +3732,8 @@ std::function<int()> cmake::BuildWorkflowStep(
 }
 #endif
 
-int cmake::Workflow(const std::string& presetName, bool listPresets)
+int cmake::Workflow(const std::string& presetName,
+                    WorkflowListPresets listPresets)
 {
 #ifndef CMAKE_BOOTSTRAP
   this->SetHomeDirectory(cmSystemTools::GetCurrentWorkingDirectory());
@@ -3747,7 +3748,7 @@ int cmake::Workflow(const std::string& presetName, bool listPresets)
     return 1;
   }
 
-  if (listPresets) {
+  if (listPresets == WorkflowListPresets::Yes) {
     settingsFile.PrintWorkflowPresetList();
     return 0;
   }

Source/cmake.h

@@ -602,7 +602,12 @@ public:
   bool Open(const std::string& dir, bool dryRun);
 
   //! run the --workflow option
-  int Workflow(const std::string& presetName, bool listPresets);
+  enum class WorkflowListPresets
+  {
+    No,
+    Yes,
+  };
+  int Workflow(const std::string& presetName, WorkflowListPresets listPresets);
 
   void UnwatchUnusedCli(const std::string& var);
   void WatchUnusedCli(const std::string& var);

Source/cmakemain.cxx

@@ -917,8 +917,9 @@ int do_workflow(int ac, char const* const* av)
   std::cerr << "This cmake does not support --workflow\n";
   return -1;
 #else
+  using WorkflowListPresets = cmake::WorkflowListPresets;
   std::string presetName;
-  bool listPresets = false;
+  auto listPresets = WorkflowListPresets::No;
 
   using CommandArgument =
     cmCommandLineArgument<bool(std::string const& value)>;
@@ -927,7 +928,10 @@ int do_workflow(int ac, char const* const* av)
     CommandArgument{ "--preset", CommandArgument::Values::One,
                      CommandArgument::setToValue(presetName) },
     CommandArgument{ "--list-presets", CommandArgument::Values::Zero,
-                     CommandArgument::setToTrue(listPresets) }
+                     [&listPresets](const std::string&) -> bool {
+                       listPresets = WorkflowListPresets::Yes;
+                       return true;
+                     } },
   };
 
   std::vector<std::string> inputArgs;
@@ -950,14 +954,14 @@ int do_workflow(int ac, char const* const* av)
     if (!(matched && parsed)) {
       if (!matched) {
         presetName.clear();
-        listPresets = false;
+        listPresets = WorkflowListPresets::No;
         std::cerr << "Unknown argument " << arg << std::endl;
       }
       break;
     }
   }
 
-  if (presetName.empty() && !listPresets) {
+  if (presetName.empty() && listPresets == WorkflowListPresets::No) {
     /* clang-format off */
     std::cerr <<
       "Usage: cmake --workflow [options]\n"