neoGFX
Cross-platform C++ app/game engine
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i_discoverable.hpp
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1// i_discoverable.hpp
2/*
3 * Copyright (c) 2007 Leigh Johnston.
4 *
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * * Neither the name of Leigh Johnston nor the names of any
19 * other contributors to this software may be used to endorse or
20 * promote products derived from this software without specific prior
21 * written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
24 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
25 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
27 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
29 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34*/
35
36#pragma once
37
38#include <neolib/neolib.hpp>
39#include <neolib/core/uuid.hpp>
41
42namespace neolib
43{
45 {
46 public:
47 template <typename Interface>
49 {
50 void* result = nullptr;
51 if (discover(Interface::iid(), result))
52 aObject.reset(static_cast<Interface*>(result));
53 return result != nullptr;
54 }
55 virtual bool discover(const uuid& aId, void*& aObject) = 0;
56 };
57}
bool discover(i_ref_ptr< Interface > &aObject)
virtual bool discover(const uuid &aId, void *&aObject)=0
virtual void reset()=0