rename redundantcopy loplugin to redundantfcast

Change-Id: I34e28a30a4f1fd264c18c901cd94094531543271

1 files changed, 61 insertions, 0 deletions

diff --git a/compilerplugins/clang/redundantfcast.cxx b/compilerplugins/clang/redundantfcast.cxx
new file mode 100644
index 000000000000..87d656c6d237
--- /dev/null
+++ b/compilerplugins/clang/redundantfcast.cxx
@@ -0,0 +1,61 @@
+/* -*- 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/.
+ */
+
+#include "check.hxx"
+#include "compat.hxx"
+#include "plugin.hxx"
+
+namespace
+{
+class RedundantFCast final : public RecursiveASTVisitor<RedundantFCast>, public loplugin::Plugin
+{
+public:
+    explicit RedundantFCast(loplugin::InstantiationData const& data)
+        : Plugin(data)
+    {
+    }
+
+    bool VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr const* expr)
+    {
+        if (ignoreLocation(expr))
+        {
+            return true;
+        }
+        auto const t1 = expr->getTypeAsWritten();
+        auto const t2 = compat::getSubExprAsWritten(expr)->getType();
+        if (t1.getCanonicalType().getTypePtr() != t2.getCanonicalType().getTypePtr())
+        {
+            return true;
+        }
+        auto tc = loplugin::TypeCheck(t1);
+        if (!(tc.Class("OUString").Namespace("rtl").GlobalNamespace()
+              || tc.Class("Color").GlobalNamespace() || tc.Class("unique_ptr").StdNamespace()))
+        {
+            return true;
+        }
+        report(DiagnosticsEngine::Warning, "redundant functional cast from %0 to %1",
+               expr->getExprLoc())
+            << t2 << t1 << expr->getSourceRange();
+        return true;
+    }
+
+private:
+    void run() override
+    {
+        if (compiler.getLangOpts().CPlusPlus)
+        {
+            TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+        }
+    }
+};
+
+static loplugin::Plugin::Registration<RedundantFCast> reg("redundantfcast");
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */