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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef GrResourceHandle_DEFINED
- #define GrResourceHandle_DEFINED
- #include "include/core/SkTypes.h"
- // Opaque handle to a resource. Users should always use the macro below to create a specific
- // template instantiation of GrResourceHandle.
- template <typename kind> class GrResourceHandle {
- public:
- GrResourceHandle(int value) : fValue(value) {
- SkASSERT(this->isValid());
- }
- GrResourceHandle() : fValue(kInvalid_ResourceHandle) {}
- bool operator==(const GrResourceHandle& other) const { return other.fValue == fValue; }
- bool isValid() const { return kInvalid_ResourceHandle != fValue; }
- int toIndex() const { SkASSERT(this->isValid()); return fValue; }
- private:
- static const int kInvalid_ResourceHandle = -1;
- int fValue;
- };
- // Creates a type "name", which is a specfic template instantiation of GrResourceHandle.
- #define GR_DEFINE_RESOURCE_HANDLE_CLASS(name) \
- struct name##Kind {}; \
- using name = GrResourceHandle<name##Kind>;
- #endif
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