feat: runtime block value

runtime/ast/runtime.py

@@ -32,9 +32,8 @@ class Runtime:
     def assignment_expression(self, ast):
         id = ast.get("identifier").get("name")
         v = ast.get("value")
-        l = self.literal(v)
-        self.records[id] = self.unquote(v)
-        
+        self.set_identifier_value(id, self.unquote(v))
+    
     def _is_call_function(self, ast):
         return ast["type"] == "CallExpression"
 
@@ -44,14 +43,32 @@ class Runtime:
         unquoted_args = []
         for arg in args:
             unquoted_args.append(self.unquote(arg))
-        fu = self.records.get(id)
+        fu = self.get_identifier_value(id)
         if fu == None:
             raise Exception("Function not found: " + id)
         return fu(*unquoted_args)
+    
+    def get_identifier_value(self, key):
+        v = self.records.get(key)
+        if v != None:
+            return v
+        if self.parent != None:
+            return self.parent.get_identifier_value(key)
+        return None
+
+    def set_identifier_value(self, key, value):
+        v = self.records.get(key)
+        if v != None:
+            self.records[key] = value
+            return
+        if self.parent != None:
+            self.parent.set_identifier_value(key, value)
+            return
+        raise Exception("Identifier not found: " + key)
 
     def unquote(self, ast):
         if self._is_identifier(ast):
-            return self.records.get(ast.get("name"))
+            return self.get_identifier_value(ast.get("name"))
         if self._is_literal(ast):
             return self.literal(ast)
         if self._is_call_function(ast):