From 3fdb9d655c628fbc2b5df655dab675a91be4e507 Mon Sep 17 00:00:00 2001
From: Dmitry Cheryasov <Dmitry.Cheryasov@jetbrains.com>
Date: Fri, 17 Jul 2009 06:55:09 +0400
Subject: [PATCH] Don't show empty arglist at decorators if there's none. Fixes
 PY-194.

---
 .../python/PythonDocumentationProvider.java   | 20 ++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/python/src/com/jetbrains/python/PythonDocumentationProvider.java b/python/src/com/jetbrains/python/PythonDocumentationProvider.java
index 2e2044b2598e..d66bf79ff1b7 100644
--- a/python/src/com/jetbrains/python/PythonDocumentationProvider.java
+++ b/python/src/com/jetbrains/python/PythonDocumentationProvider.java
@@ -205,16 +205,18 @@ public class PythonDocumentationProvider extends QuickDocumentationProvider {
   ) {
     cat.append("@");
     name_wrapper.apply(PyUtil.getReadableRepr(deco.getCallee(), true), cat);
-    PyArgumentList arglist = deco.getArgumentList();
-    if (arglist != null) {
-      List<String> argnames = FP.map(
-        FP.combine(LReadableRepr, arg_wrapper),
-        Arrays.asList(arglist.getArguments())
-      );
+    if (deco.hasArgumentList()) {
+      PyArgumentList arglist = deco.getArgumentList();
+      if (arglist != null) {
+        List<String> argnames = FP.map(
+          FP.combine(LReadableRepr, arg_wrapper),
+          Arrays.asList(arglist.getArguments())
+        );
 
-      cat.append("(");
-      join(", ", argnames, cat);
-      cat.append(")");
+        cat.append("(");
+        join(", ", argnames, cat);
+        cat.append(")");
+      }
     }
     return cat;
   }