1 files changed, 63 insertions, 0 deletions
diff --git a/src/checks/level0/empty-qstringliteral.cpp b/src/checks/level0/empty-qstringliteral.cpp
new file mode 100644
index 00000000..359ccd03
--- /dev/null
+++ b/src/checks/level0/empty-qstringliteral.cpp
@@ -0,0 +1,63 @@
+/*
+  This file is part of the clazy static checker.
+
+  Copyright (C) 2018 Sergio Martins <smartins@kde.org>
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with this library; see the file COPYING.LIB.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+*/
+
+#include "empty-qstringliteral.h"
+#include "Utils.h"
+#include "HierarchyUtils.h"
+#include "QtUtils.h"
+#include "TypeUtils.h"
+
+#include <clang/AST/AST.h>
+
+using namespace clang;
+using namespace std;
+
+
+EmptyQStringliteral::EmptyQStringliteral(const std::string &name, ClazyContext *context)
+    : CheckBase(name, context)
+{
+}
+
+void EmptyQStringliteral::VisitStmt(clang::Stmt *stmt)
+{
+    auto declstm = dyn_cast<DeclStmt>(stmt);
+    if (!declstm || !declstm->isSingleDecl())
+        return;
+
+    auto vd = dyn_cast<VarDecl>(declstm->getSingleDecl());
+    if (!vd || vd->getName() != "qstring_literal")
+        return;
+
+    Expr *expr = vd->getInit();
+    auto initListExpr = expr ? dyn_cast<InitListExpr>(expr) : nullptr;
+    if (!initListExpr || initListExpr->getNumInits() != 2)
+        return;
+
+    Expr *init = initListExpr->getInit(1);
+    auto literal = init ? dyn_cast<StringLiteral>(init) : nullptr;
+    if (!literal || literal->getByteLength() != 0)
+        return;
+
+    if (!getLocStart(stmt).isMacroID())
+        return;
+
+    emitWarning(stmt, "Use QString instead of an empty QStringLiteral");
+}