Take sub-statements

src/ncdiff/composer.py

@@ -108,12 +108,9 @@ def model_name(self):
             ret = re.search(Tag.BRACE[0], self.path[0])
             if ret:
                 url_to_name = {i[2]: i[0] for i in self.device.namespaces
-                               if i[1] is not None}
+                               if i[1] is not None and i[2] == ret.group(1)}
                 if ret.group(1) in url_to_name:
-                    raise ModelMissing("please load model '{}' by calling "
-                                       "method load_model() of device {}"
-                                       .format(url_to_name[ret.group(1)],
-                                               self.device))
+                    return url_to_name[ret.group(1)]
                 else:
                     raise ModelMissing("unknown model url '{}'"
                                        .format(ret.group(1)))
@@ -123,7 +120,10 @@ def model_name(self):
 
     @property
     def model_ns(self):
-        return self.device.models[self.model_name].url
+        name_to_url = {i[0]: i[2] for i in self.device.namespaces
+                       if i[1] is not None and i[0] == self.model_name}
+        return name_to_url[self.model_name] if self.model_name in name_to_url \
+            else None
 
     @property
     def is_config(self):

src/ncdiff/manager.py

@@ -271,7 +271,9 @@ def scan_models(self, folder='./yang', download='check'):
         if download in ['check', 'force']:
             d = ModelDownloader(self, folder)
             d.download_all(check_before_download=(download == 'check'))
-        self.compiler = ModelCompiler(folder)
+            self.compiler = ModelCompiler(folder, context=d.context)
+        else:
+            self.compiler = ModelCompiler(folder)
 
     def load_model(self, model):
         '''load_model

src/ncdiff/ref.py

@@ -362,7 +362,7 @@ def parse_square_bracket(self, to_node=None):
                             self.cut(start_idx+1, end_idx-2, tag, 2)
                         start_idx = None
                     else:
-                        if re.search('^\[[1-9][0-9]*\]$', substring):
+                        if re.search(r'^\[[1-9][0-9]*\]$', substring):
                             numbers = substring[1:-1]
                             self.cut(start_idx+1, end_idx-1, numbers, 2)
                         else: