1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef PPAPI_SHARED_IMPL_SCOPED_PP_VAR_H_ 6 #define PPAPI_SHARED_IMPL_SCOPED_PP_VAR_H_ 7 8 #include "ppapi/c/pp_var.h" 9 #include "ppapi/shared_impl/ppapi_shared_export.h" 10 11 namespace ppapi { 12 13 class PPAPI_SHARED_EXPORT ScopedPPVar { 14 public: 15 struct PassRef {}; 16 17 ScopedPPVar(); 18 19 // Takes one reference to the given var. 20 explicit ScopedPPVar(const PP_Var& v); 21 22 // Assumes responsibility for one ref that the var already has. 23 ScopedPPVar(const PassRef&, const PP_Var& v); 24 25 // Implicit copy constructor allowed. 26 ScopedPPVar(const ScopedPPVar& other); 27 28 ~ScopedPPVar(); 29 30 ScopedPPVar& operator=(const PP_Var& r); 31 ScopedPPVar& operator=(const ScopedPPVar& other) { 32 return operator=(other.var_); 33 } 34 35 const PP_Var& get() const { return var_; } 36 37 // Returns the PP_Var, passing the reference to the caller. This class 38 // will no longer hold the var. 39 PP_Var Release(); 40 41 private: 42 PP_Var var_; 43 }; 44 45 } // namespace ppapi 46 47 #endif // PPAPI_SHARED_IMPL_SCOPED_PP_VAR_H_ 48
