base/memory/weak_ptr_unittest.nc

   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 "base/memory/weak_ptr.h"
   6
   7 namespace base {
   8
   9 struct Producer : SupportsWeakPtr<Producer> {};
  10 struct DerivedProducer : Producer {};
  11 struct OtherDerivedProducer : Producer {};
  12 struct MultiplyDerivedProducer : Producer,
  13                                  SupportsWeakPtr<MultiplyDerivedProducer> {};
  14 struct Unrelated {};
  15 struct DerivedUnrelated : Unrelated {};
  16
  17 #if defined(NCTEST_AUTO_DOWNCAST)  // [r"invalid conversion from"]
  18
  19 void WontCompile() {
  20   Producer f;
  21   WeakPtr<Producer> ptr = f.AsWeakPtr();
  22   WeakPtr<DerivedProducer> derived_ptr = ptr;
  23 }
  24
  25 #elif defined(NCTEST_STATIC_DOWNCAST)  // [r"invalid conversion from"]
  26
  27 void WontCompile() {
  28   Producer f;
  29   WeakPtr<Producer> ptr = f.AsWeakPtr();
  30   WeakPtr<DerivedProducer> derived_ptr =
  31       static_cast<WeakPtr<DerivedProducer> >(ptr);
  32 }
  33
  34 #elif defined(NCTEST_AUTO_REF_DOWNCAST)  // [r"invalid initialization of reference"]
  35
  36 void WontCompile() {
  37   Producer f;
  38   WeakPtr<Producer> ptr = f.AsWeakPtr();
  39   WeakPtr<DerivedProducer>& derived_ptr = ptr;
  40 }
  41
  42 #elif defined(NCTEST_STATIC_REF_DOWNCAST)  // [r"invalid static_cast"]
  43
  44 void WontCompile() {
  45   Producer f;
  46   WeakPtr<Producer> ptr = f.AsWeakPtr();
  47   WeakPtr<DerivedProducer>& derived_ptr =
  48       static_cast<WeakPtr<DerivedProducer>&>(ptr);
  49 }
  50
  51 #elif defined(NCTEST_STATIC_ASWEAKPTR_DOWNCAST)  // [r"no matching function"]
  52
  53 void WontCompile() {
  54   Producer f;
  55   WeakPtr<DerivedProducer> ptr =
  56       SupportsWeakPtr<Producer>::StaticAsWeakPtr<DerivedProducer>(&f);
  57 }
  58
  59 #elif defined(NCTEST_UNSAFE_HELPER_DOWNCAST)  // [r"invalid conversion from"]
  60
  61 void WontCompile() {
  62   Producer f;
  63   WeakPtr<DerivedProducer> ptr = AsWeakPtr(&f);
  64 }
  65
  66 #elif defined(NCTEST_UNSAFE_INSTANTIATED_HELPER_DOWNCAST)  // [r"no matching function"]
  67
  68 void WontCompile() {
  69   Producer f;
  70   WeakPtr<DerivedProducer> ptr = AsWeakPtr<DerivedProducer>(&f);
  71 }
  72
  73 #elif defined(NCTEST_UNSAFE_WRONG_INSANTIATED_HELPER_DOWNCAST)  // [r"invalid conversion from"]
  74
  75 void WontCompile() {
  76   Producer f;
  77   WeakPtr<DerivedProducer> ptr = AsWeakPtr<Producer>(&f);
  78 }
  79
  80 #elif defined(NCTEST_UNSAFE_HELPER_CAST)  // [r"cannot convert"]
  81
  82 void WontCompile() {
  83   DerivedProducer f;
  84   WeakPtr<OtherDerivedProducer> ptr = AsWeakPtr(&f);
  85 }
  86
  87 #elif defined(NCTEST_UNSAFE_INSTANTIATED_HELPER_SIDECAST)  // [r"no matching function"]
  88
  89 void WontCompile() {
  90   DerivedProducer f;
  91   WeakPtr<OtherDerivedProducer> ptr = AsWeakPtr<OtherDerivedProducer>(&f);
  92 }
  93
  94 #elif defined(NCTEST_UNSAFE_WRONG_INSTANTIATED_HELPER_SIDECAST)  // [r"cannot convert"]
  95
  96 void WontCompile() {
  97   DerivedProducer f;
  98   WeakPtr<OtherDerivedProducer> ptr = AsWeakPtr<DerivedProducer>(&f);
  99 }
 100
 101 #elif defined(NCTEST_UNRELATED_HELPER)  // [r"cannot convert"]
 102
 103 void WontCompile() {
 104   DerivedProducer f;
 105   WeakPtr<Unrelated> ptr = AsWeakPtr(&f);
 106 }
 107
 108 #elif defined(NCTEST_UNRELATED_INSTANTIATED_HELPER)  // [r"no matching function"]
 109
 110 void WontCompile() {
 111   DerivedProducer f;
 112   WeakPtr<Unrelated> ptr = AsWeakPtr<Unrelated>(&f);
 113 }
 114
 115 #elif defined(NCTEST_COMPLETELY_UNRELATED_HELPER)  // [r"size of array is negative"]
 116
 117 void WontCompile() {
 118   Unrelated f;
 119   WeakPtr<Unrelated> ptr = AsWeakPtr(&f);
 120 }
 121
 122 #elif defined(NCTEST_DERIVED_COMPLETELY_UNRELATED_HELPER)  // [r"size of array is negative"]
 123
 124 void WontCompile() {
 125   DerivedUnrelated f;
 126   WeakPtr<Unrelated> ptr = AsWeakPtr(&f);
 127 }
 128
 129 #elif defined(NCTEST_AMBIGUOUS_ANCESTORS)  // [r"ambiguous base"]
 130
 131 void WontCompile() {
 132   MultiplyDerivedProducer f;
 133   WeakPtr<MultiplyDerivedProducer> ptr = AsWeakPtr(&f);
 134 }
 135
 136 #endif
 137
 138 }