1/*
2 * Copyright 2018 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef GrResourceProviderPriv_DEFINED
9#define GrResourceProviderPriv_DEFINED
10
11#include "src/gpu/GrResourceProvider.h"
12
13/** Class that adds methods to GrResourceProvider that are only intended for use internal to Skia.
14    This class is purely a privileged window into GrResourceProvider. It should never have
15    additional data members or virtual methods. */
16class GrResourceProviderPriv {
17public:
18    GrGpu* gpu() { return fResourceProvider->gpu(); }
19
20private:
21    explicit GrResourceProviderPriv(GrResourceProvider* provider) : fResourceProvider(provider) {}
22    // Required until C++17 copy elision
23    GrResourceProviderPriv(const GrResourceProviderPriv&) = default;
24    GrResourceProviderPriv& operator=(const GrResourceProviderPriv&) = delete;
25
26    // No taking addresses of this type.
27    const GrResourceProviderPriv* operator&() const;
28    GrResourceProviderPriv* operator&();
29
30    GrResourceProvider* fResourceProvider;
31    friend class GrResourceProvider; // to construct/copy this type
32};
33
34inline GrResourceProviderPriv GrResourceProvider::priv() { return GrResourceProviderPriv(this); }
35
36inline const GrResourceProviderPriv GrResourceProvider::priv() const {  // NOLINT(readability-const-return-type)
37    return GrResourceProviderPriv(const_cast<GrResourceProvider*>(this));
38}
39
40#endif
41