[Backport generator] Fix QList::swap missing the template argument in the argument type

(cherry picked from commit MeVisLab/pythonqt@051d222)

Author: usiems

generator/parser/binder.cpp

@@ -471,6 +471,18 @@ void Binder::visitFunctionDefinition(FunctionDefinitionAST *node)
   foreach (DeclaratorCompiler::Parameter p, decl_cc.parameters())
     {
       ArgumentModelItem arg = model()->create<ArgumentModelItem>();
+      
+      if (_M_current_class && _M_current_class->isTemplateClass())
+        {
+          QStringList qualifiedName = p.type.qualifiedName();
+          if (qualifiedName.size() == 1 && !qualifiedName.last().contains('<') &&
+              qualifiedName.last() == _M_current_class->name().split('<').first())
+            {
+              // Fix: add template arguments if the argument type is the current class
+              // name without template arguments
+              p.type.setQualifiedName(QStringList(_M_current_class->name()));
+            }
+        }
       arg->setType(qualifyType(p.type, functionScope->qualifiedName()));
       arg->setName(p.name);
       arg->setDefaultValue(p.defaultValue);

generator/parser/codemodel.h

@@ -355,6 +355,7 @@ class _ClassModelItem: public _ScopeModelItem
 
   TemplateParameterList templateParameters() const;
   void setTemplateParameters(const TemplateParameterList &templateParameters);
+  bool isTemplateClass() const { return _M_templateParameters.size(); }
 
   bool extendsClass(const QString &name) const;