fix special handling of NEST delay and weight variables in synapse

pynestml/symbols/variable_symbol.py

@@ -139,6 +139,14 @@ def get_decorators(self):
         """
         return self.decorators
 
+    def get_namespace_decorators(self):
+        return self.namespace_decorators
+
+    def get_namespace_decorator(self, namespace):
+        if namespace in self.namespace_decorators.keys():
+            return self.namespace_decorators[namespace]
+        return ''
+
     def has_vector_parameter(self):
         """
         Returns whether this variable symbol has a vector parameter.

pynestml/utils/messages.py

@@ -113,7 +113,6 @@ class MessageCode(Enum):
     PRIORITY_DEFINED_FOR_ONLY_ONE_EVENT_HANDLER = 82
     REPEATED_PRIORITY_VALUE = 83
     DELAY_VARIABLE = 84
-    NEST_DELAY_DECORATOR_NOT_FOUND = 85
     INPUT_PORT_SIZE_NOT_INTEGER = 86
     INPUT_PORT_SIZE_NOT_GREATER_THAN_ZERO = 87
     INSTALL_PATH_INFO = 88

pynestml/visitors/ast_builder_visitor.py

@@ -492,14 +492,24 @@ def visitModel(self, ctx):
 
         return model
 
+    def visitNamespaceDecoratorNamespace(self, ctx):
+        return str(ctx.NAME())
+
+    def visitNamespaceDecoratorName(self, ctx):
+        return str(ctx.NAME())
+
     def visitAnyDecorator(self, ctx):
         from pynestml.generated.PyNestMLLexer import PyNestMLLexer
         if ctx.getToken(PyNestMLLexer.DECORATOR_HETEROGENEOUS, 0) is not None:
             return PyNestMLLexer.DECORATOR_HETEROGENEOUS
         elif ctx.getToken(PyNestMLLexer.DECORATOR_HOMOGENEOUS, 0) is not None:
             return PyNestMLLexer.DECORATOR_HOMOGENEOUS
-
-        return None
+        elif ctx.getToken(PyNestMLLexer.AT, 0) is not None:
+            namespaceDecoratorNamespace = self.visit(ctx.namespaceDecoratorNamespace()) if ctx.namespaceDecoratorNamespace() is not None else None
+            namespaceDecoratorName = self.visit(ctx.namespaceDecoratorName()) if ctx.namespaceDecoratorName() is not None else None
+            return ASTNodeFactory.create_ast_namespace_decorator(namespaceDecoratorNamespace, namespaceDecoratorName, source_position=create_source_pos(ctx))
+        else:
+            return None
 
     # Visit a parse tree produced by PyNESTMLParser#modelBody.
     def visitModelBody(self, ctx):