Fix C++ garbage when trying to access __constructor__: generate each...

Fix C++ garbage when trying to access __constructor__: generate each constructor wrapper as a static method inside the class

Cython/Compiler/ExprNodes.py

@@ -5599,18 +5599,7 @@ class CallNode(ExprNode):
                 constructor = wrapper = type.scope.lookup_here("<constructor>")
                 if not wrapper:
                     error(self.function.pos, "no constructor wrapper found for Cypclass  type '%s'" % self.function.name)
-                namespace_list = wrapper.func_cname.split('::')
-                templates = ''
-                if type.templates:
-                    templates = '<' + ','.join([param.declaration_code('')
-                                for param in type.templates
-                                if not PyrexTypes.is_optional_template_param(param) and not param.is_fused]) + '>'
-                if len(namespace_list) > 2:
-                    # We do this because cypclass wrappers are outside of the class namespace
-                    # in the C++ code, but they are declared within the class scope
-                    constructor_cname = '::'.join(namespace_list[:-2] + [namespace_list[-1]]) + templates
-                else:
-                    constructor_cname = namespace_list[-1] + templates
+                constructor_cname = wrapper.func_cname
                 constructor_type = wrapper.type
             elif not constructor:
                 error(self.function.pos, "no constructor found for C++  type '%s'" % self.function.name)

Cython/Compiler/ModuleNode.py

@@ -1048,7 +1048,11 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
                 else:
                     code.putln("%s(%s);" % (type.cname, ", ".join(arg_decls)))
 
-            if not type.is_cyp_class and (constructor or py_attrs):
+            if type.is_cyp_class:
+                constructor = scope.lookup_here("<constructor>")
+                for constructor_alternative in constructor.all_alternatives():
+                    code.putln("static %s;" % constructor_alternative.type.declaration_code(constructor_alternative.cname))
+            elif constructor or py_attrs:
                 if constructor:
                     for constructor_alternative in constructor.all_alternatives():
                         arg_decls = []
@@ -1158,7 +1162,7 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         self_type = wrapper_entry.type.return_type.declaration_code('')
         type_string = type.empty_declaration_code()
         class_name = type.name
-        wrapper_cname = "%s__constructor__%s" % (Naming.func_prefix, class_name)
+        wrapper_cname = "%s::%s__constructor__%s" % (type_string, Naming.func_prefix, class_name)
         wrapper_type = wrapper_entry.type
 
         arg_decls = []
@@ -1180,7 +1184,7 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
             arg_decls = ["void"]
 
         decl_arg_string = ', '.join(arg_decls)
-        code.putln("static %s %s(%s)" % (self_type, wrapper_cname, decl_arg_string))
+        code.putln("%s %s(%s)" % (self_type, wrapper_cname, decl_arg_string))
         code.putln("{")
 
         wrapper_arg_types = [arg.type for arg in wrapper_entry.type.args]