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-rw-r--r--compilerplugins/clang/paintmethodconversion.cxx95
1 files changed, 95 insertions, 0 deletions
diff --git a/compilerplugins/clang/paintmethodconversion.cxx b/compilerplugins/clang/paintmethodconversion.cxx
new file mode 100644
index 000000000000..47e410872b35
--- /dev/null
+++ b/compilerplugins/clang/paintmethodconversion.cxx
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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 "clang/Lex/Lexer.h"
+
+#include "compat.hxx"
+#include "plugin.hxx"
+#include <iostream>
+#include <fstream>
+
+/**
+ * Rewrites all Paint method on subclasses of vcl::Window to include RenderContext& as parameter.
+ *
+ * run as: make COMPILER_PLUGIN_TOOL=paintmethodconversion UPDATE_FILES=all FORCE_COMPILE_ALL=1
+ */
+
+namespace
+{
+
+bool baseCheckNotWindowSubclass(const CXXRecordDecl* aBaseDefinition, void* /*pInput*/)
+{
+ if (aBaseDefinition && aBaseDefinition->getQualifiedNameAsString() == "vcl::Window")
+ {
+ return false;
+ }
+ return true;
+}
+
+bool isDerivedFromWindow(const CXXRecordDecl* decl) {
+ if (!decl)
+ return false;
+ // skip vcl::Window
+ if (decl->getQualifiedNameAsString() == "vcl::Window")
+ return false;
+ if (!decl->forallBases(baseCheckNotWindowSubclass, nullptr, true))
+ return true;
+
+ return false;
+}
+
+class PaintMethodConversion: public RecursiveASTVisitor<PaintMethodConversion>, public loplugin::RewritePlugin
+{
+public:
+ explicit PaintMethodConversion(InstantiationData const& data):
+ RewritePlugin(data)
+ {}
+
+ virtual void run() override
+ {
+ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+ }
+
+ bool TraverseCXXMethodDecl(const CXXMethodDecl* methodDeclaration)
+ {
+ if (!rewriter)
+ return true;
+
+ if (methodDeclaration->getNameAsString() != "Paint")
+ return true;
+
+ if (!isDerivedFromWindow(methodDeclaration->getParent()))
+ {
+ return true;
+ }
+
+ unsigned int nNoOfParameters = methodDeclaration->getNumParams();
+
+ if (nNoOfParameters == 1) // we expect only one parameter Paint(Rect&)
+ {
+ const ParmVarDecl* parameterDecl = methodDeclaration->getParamDecl(0);
+ if (methodDeclaration->hasBody())
+ {
+ rewriter->InsertText(parameterDecl->getLocStart(), "vcl::RenderContext& /*rRenderContext*/, ", true, true);
+ }
+ else
+ {
+ rewriter->InsertText(parameterDecl->getLocStart(), "vcl::RenderContext& rRenderContext, ", true, true);
+ }
+ }
+ return true;
+ }
+
+};
+
+loplugin::Plugin::Registration<PaintMethodConversion> X("paintmethodconversion", true);
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */