Refactor module definition source enumeration

Add a `cmGeneratorTarget::GetModuleDefinitionSources` method.

Source/cmGeneratorTarget.cxx

@@ -112,7 +112,7 @@ struct IDLSourcesTag
 struct ResxTag
 {
 };
-struct ModuleDefinitionFileTag
+struct ModuleDefinitionSourcesTag
 {
 };
 struct AppManifestTag
@@ -236,8 +236,8 @@ struct TagVisitor
     } else if (!sf->GetLanguage().empty()) {
       DoAccept<IsSameTag<Tag, ObjectSourcesTag>::Result>::Do(this->Data, sf);
     } else if (ext == "def") {
-      DoAccept<IsSameTag<Tag, ModuleDefinitionFileTag>::Result>::Do(this->Data,
-                                                                    sf);
+      DoAccept<IsSameTag<Tag, ModuleDefinitionSourcesTag>::Result>::Do(
+        this->Data, sf);
       if (this->IsObjLib) {
         this->BadObjLibFiles.push_back(sf);
       }
@@ -681,6 +681,12 @@ bool cmGeneratorTarget::HasExplicitObjectName(cmSourceFile const* file) const
   return it != this->ExplicitObjectName.end();
 }
 
+void cmGeneratorTarget::GetModuleDefinitionSources(
+  std::vector<cmSourceFile const*>& data, const std::string& config) const
+{
+  IMPLEMENT_VISIT(ModuleDefinitionSources);
+}
+
 void cmGeneratorTarget::GetIDLSources(std::vector<cmSourceFile const*>& data,
                                       const std::string& config) const
 {
@@ -1942,8 +1948,7 @@ cmSourceFile const* cmGeneratorTarget::GetModuleDefinitionFile(
   const std::string& config) const
 {
   std::vector<cmSourceFile const*> data;
-  IMPLEMENT_VISIT_IMPL(ModuleDefinitionFile,
-                       COMMA std::vector<cmSourceFile const*>)
+  this->GetModuleDefinitionSources(data, config);
   if (!data.empty()) {
     return data.front();
   }

Source/cmGeneratorTarget.h

@@ -77,6 +77,8 @@ public:
   bool HasExplicitObjectName(cmSourceFile const* file) const;
   void AddExplicitObjectName(cmSourceFile const* sf);
 
+  void GetModuleDefinitionSources(std::vector<cmSourceFile const*>&,
+                                  const std::string& config) const;
   void GetResxSources(std::vector<cmSourceFile const*>&,
                       const std::string& config) const;
   void GetIDLSources(std::vector<cmSourceFile const*>&,

Source/cmVisualStudio10TargetGenerator.cxx

@@ -1841,10 +1841,9 @@ void cmVisualStudio10TargetGenerator::WriteAllSources()
     (*this->BuildFileStream) << cmVS10EscapeXML(obj) << "\" />\n";
   }
 
-  if (cmSourceFile const* defsrc =
-        this->GeneratorTarget->GetModuleDefinitionFile("")) {
-    this->WriteSource("None", defsrc);
-  }
+  std::vector<cmSourceFile const*> defSources;
+  this->GeneratorTarget->GetModuleDefinitionSources(defSources, "");
+  this->WriteSources("None", defSources);
 
   if (this->IsMissingFiles) {
     this->WriteMissingFiles();