ppapi/shared_impl/scoped_pp_var.cc

   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 #include "ppapi/shared_impl/scoped_pp_var.h"
   6
   7 #include "ppapi/shared_impl/ppapi_globals.h"
   8 #include "ppapi/shared_impl/var_tracker.h"
   9
  10 namespace ppapi {
  11
  12 namespace {
  13
  14 void CallAddRef(const PP_Var& v) {
  15   PpapiGlobals::Get()->GetVarTracker()->AddRefVar(v);
  16 }
  17
  18 void CallRelease(const PP_Var& v) {
  19   PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(v);
  20 }
  21
  22 }  // namespace
  23
  24 ScopedPPVar::ScopedPPVar() : var_(PP_MakeUndefined()) {
  25 }
  26
  27 ScopedPPVar::ScopedPPVar(const PP_Var& v) : var_(v) {
  28   CallAddRef(var_);
  29 }
  30
  31 ScopedPPVar::ScopedPPVar(const PassRef&, const PP_Var& v) : var_(v) {
  32 }
  33
  34 ScopedPPVar::ScopedPPVar(const ScopedPPVar& other)
  35     : var_(other.var_) {
  36   CallAddRef(var_);
  37 }
  38
  39 ScopedPPVar::~ScopedPPVar() {
  40   CallRelease(var_);
  41 }
  42
  43 ScopedPPVar& ScopedPPVar::operator=(const PP_Var& v) {
  44   CallAddRef(v);
  45   CallRelease(var_);
  46   var_ = v;
  47   return *this;
  48 }
  49
  50 PP_Var ScopedPPVar::Release() {
  51   PP_Var result = var_;
  52   var_ = PP_MakeUndefined();
  53   return result;
  54 }
  55
  56 }  // namespace ppapi