1 files changed, 68 insertions, 0 deletions
diff --git a/compilerplugins/clang/constexprliteral.cxx b/compilerplugins/clang/constexprliteral.cxx
new file mode 100644
index 0000000000..86bba13e09
--- /dev/null
+++ b/compilerplugins/clang/constexprliteral.cxx
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef LO_CLANG_SHARED_PLUGINS
+
+#include <cassert>
+#include <stack>
+
+#include "check.hxx"
+#include "plugin.hxx"
+#include "config_clang.h"
+
+namespace
+{
+class ConstexprLiteral final : public loplugin::FilteringPlugin<ConstexprLiteral>
+{
+public:
+    explicit ConstexprLiteral(loplugin::InstantiationData const& data)
+        : FilteringPlugin(data)
+    {
+    }
+
+    bool VisitVarDecl(const VarDecl* varDecl)
+    {
+        if (ignoreLocation(varDecl))
+            return true;
+        if (varDecl->isConstexpr())
+            return true;
+        if (!loplugin::TypeCheck(varDecl->getType())
+                 .Class("OUStringLiteral")
+                 .Namespace("rtl")
+                 .GlobalNamespace())
+            return true;
+        report(DiagnosticsEngine::Warning, "OUStringLiteral should be declared constexpr",
+               varDecl->getBeginLoc())
+            << varDecl->getSourceRange();
+        return true;
+    }
+
+    bool preRun() override
+    {
+        if (!compiler.getLangOpts().CPlusPlus)
+            return false;
+        return true;
+    }
+
+private:
+    void run() override
+    {
+        if (preRun())
+        {
+            TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+        }
+    }
+};
+
+loplugin::Plugin::Registration<ConstexprLiteral> constexprliteral("constexprliteral");
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */