Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 180 insertions, 0 deletions

diff --git a/include/tools/link.hxx b/include/tools/link.hxx
new file mode 100644
index 000000000..ec88bf953
--- /dev/null
+++ b/include/tools/link.hxx
@@ -0,0 +1,180 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_TOOLS_LINK_HXX
+#define INCLUDED_TOOLS_LINK_HXX
+
+#include <sal/config.h>
+
+#include <sal/macros.h>
+#include <sal/types.h>
+
+#define DECL_LINK(Member, ArgType, RetType) \
+    static RetType LinkStub##Member(void *, ArgType); \
+    RetType Member(ArgType)
+
+#define DECL_STATIC_LINK(Class, Member, ArgType, RetType) \
+    static RetType LinkStub##Member(void *, ArgType); \
+    static RetType Member(Class *, ArgType)
+
+#define DECL_DLLPRIVATE_LINK(Member, ArgType, RetType) \
+    SAL_DLLPRIVATE static RetType LinkStub##Member(void *, ArgType); \
+    SAL_DLLPRIVATE RetType Member(ArgType)
+
+#define DECL_DLLPRIVATE_STATIC_LINK(Class, Member, ArgType, RetType) \
+    SAL_DLLPRIVATE static RetType LinkStub##Member(void *, ArgType); \
+    SAL_DLLPRIVATE static RetType Member(Class *, ArgType)
+
+#define IMPL_LINK(Class, Member, ArgType, ArgName, RetType) \
+    RetType Class::LinkStub##Member(void * instance, ArgType data) { \
+        return static_cast<Class *>(instance)->Member(data); \
+    } \
+    RetType Class::Member(ArgType ArgName)
+
+#define IMPL_LINK_NOARG(Class, Member, ArgType, RetType) \
+    RetType Class::LinkStub##Member(void * instance, ArgType data) { \
+        return static_cast<Class *>(instance)->Member(data); \
+    } \
+    RetType Class::Member(SAL_UNUSED_PARAMETER ArgType)
+
+#define IMPL_STATIC_LINK( \
+        Class, Member, ArgType, ArgName, RetType) \
+    RetType Class::LinkStub##Member(void * instance, ArgType data) { \
+        return Member(static_cast<Class *>(instance), data); \
+    } \
+    RetType Class::Member(SAL_UNUSED_PARAMETER Class *, ArgType ArgName)
+
+#define IMPL_STATIC_LINK_NOARG( \
+        Class, Member, ArgType, RetType) \
+    RetType Class::LinkStub##Member(void * instance, ArgType data) { \
+        return Member(static_cast<Class *>(instance), data); \
+    } \
+    RetType Class::Member( \
+        SAL_UNUSED_PARAMETER Class *, SAL_UNUSED_PARAMETER ArgType)
+
+#ifdef DBG_UTIL
+#define LINK(Instance, Class, Member) ::tools::detail::makeLink( \
+    ::tools::detail::castTo<Class *>(Instance), &Class::LinkStub##Member, __FILE__, __LINE__, SAL_STRINGIFY(Class::LinkStub##Member))
+#else
+#define LINK(Instance, Class, Member) ::tools::detail::makeLink( \
+    ::tools::detail::castTo<Class *>(Instance), &Class::LinkStub##Member)
+#endif
+
+template<typename Arg, typename Ret>
+class SAL_WARN_UNUSED Link {
+public:
+    typedef Ret Stub(void *, Arg);
+
+#ifdef DBG_UTIL
+    Link()
+        : function_(nullptr)
+        , instance_(nullptr)
+        , file_("unknown")
+        , line_(0)
+        , target_("unknown")
+    {
+    }
+
+    Link(void* instance, Stub* function, const char* const file = "unknown", const int line = 0,
+         const char* const target = "unknown")
+        : function_(function)
+        , instance_(instance)
+        , file_(file)
+        , line_(line)
+        , target_(target)
+    {
+    }
+#else
+    Link(): function_(nullptr), instance_(nullptr) {}
+
+    Link(void * instance, Stub * function):
+        function_(function), instance_(instance) {}
+#endif
+
+    Ret Call(Arg data) const
+    { return function_ == nullptr ? Ret() : (*function_)(instance_, data); }
+
+    bool IsSet() const { return function_ != nullptr; }
+
+    bool operator !() const { return !IsSet(); }
+
+    bool operator <(Link const & other) const {
+        char* ptr1 = reinterpret_cast<char*>(function_);
+        char* ptr2 = reinterpret_cast<char*>(other.function_);
+        if (ptr1 < ptr2)
+            return true;
+        else if (ptr1 > ptr2)
+            return false;
+        else
+            return instance_ < other.instance_;
+    };
+
+    bool operator ==(Link const & other) const
+    { return function_ == other.function_ && instance_ == other.instance_; };
+
+    void *GetInstance() const { return instance_; }
+
+#ifdef DBG_UTIL
+    const char* getSourceFilename() const { return file_; }
+    int getSourceLineNumber() const { return line_; }
+    const char* getTargetName() const { return target_; }
+#endif
+
+private:
+    Stub * function_;
+    void * instance_;
+
+#ifdef DBG_UTIL
+    /// Support tracing link source and target.
+    /// When debugging async events, it's often critical
+    /// to find out not only where a link leads (i.e. the target
+    /// function), but also where it was created (file:line).
+    const char* file_;
+    int line_;
+    const char* target_;
+#endif
+};
+
+// Class used to indicate that the Call() parameter is not in use:
+class LinkParamNone { LinkParamNone() = delete; };
+
+namespace tools::detail {
+
+// Avoids loplugin:redundantcast in LINK macro, in the common case that Instance
+// is already of type Class * (instead of a derived type):
+template<typename To, typename From> To castTo(From from)
+{ return static_cast<To>(from); }
+
+#ifdef DBG_UTIL
+template<typename Arg, typename Ret>
+Link<Arg, Ret> makeLink(void * instance, Ret (* function)(void *, Arg), const char* file, int line, const char* target) {
+    return Link<Arg, Ret>(instance, function, file, line, target);
+}
+#else
+template<typename Arg, typename Ret>
+Link<Arg, Ret> makeLink(void * instance, Ret (* function)(void *, Arg)) {
+    return Link<Arg, Ret>(instance, function);
+}
+#endif
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */