From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Mon, 11 Jan 2021 14:53:26 +0000 (+0100)
Subject: Added repr and slots to Json wrappers
X-Git-Tag: 3.0.dev0~184
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ddb8873d75175006d9d59e0d17166b9569b7333;p=thirdparty%2Fpsycopg.git

Added repr and slots to Json wrappers
---

diff --git a/psycopg3/psycopg3/types/json.py b/psycopg3/psycopg3/types/json.py
index 543a2674e..a058de942 100644
--- a/psycopg3/psycopg3/types/json.py
+++ b/psycopg3/psycopg3/types/json.py
@@ -15,20 +15,28 @@ JsonDumpsFunction = Callable[[Any], str]
 
 
 class _JsonWrapper:
+    __slots__ = ("obj", "_dumps")
+
     def __init__(self, obj: Any, dumps: Optional[JsonDumpsFunction] = None):
         self.obj = obj
         self._dumps: JsonDumpsFunction = dumps or json.dumps
 
+    def __repr__(self) -> str:
+        sobj = repr(self.obj)
+        if len(sobj) > 40:
+            sobj = f"{sobj[:35]} ... ({len(sobj)} chars)"
+        return f"{self.__class__.__name__}({sobj})"
+
     def dumps(self) -> str:
         return self._dumps(self.obj)
 
 
 class Json(_JsonWrapper):
-    pass
+    __slots__ = ()
 
 
 class Jsonb(_JsonWrapper):
-    pass
+    __slots__ = ()
 
 
 class _JsonDumper(Dumper):