From 765aa56d6e92ee3d35f6bd9f650f6ecc05de0ee8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thorbj=C3=B8rn=20Lindeijer?= <thorbjorn.lindeijer@nokia.com>
Date: Tue, 26 May 2009 14:02:04 +0200
Subject: [PATCH] Preprocessing an empty expression is always empty
Fixes performance issue with typing opening parentheses.
Reviewed-by: Roberto Raggi
---
src/libs/cplusplus/TypeOfExpression.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/libs/cplusplus/TypeOfExpression.cpp b/src/libs/cplusplus/TypeOfExpression.cpp
index 8be7be2572d..bb773b20002 100644
--- a/src/libs/cplusplus/TypeOfExpression.cpp
+++ b/src/libs/cplusplus/TypeOfExpression.cpp
@@ -133,6 +133,9 @@ QString TypeOfExpression::preprocessedExpression(const QString &expression,
Snapshot documents,
Document::Ptr thisDocument) const
{
+ if (expression.trimmed().isEmpty())
+ return expression;
+
Environment env;
QSet<QString> processed;
processEnvironment(documents, thisDocument,
--
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