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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "sync/internal_api/public/util/immutable.h" | 5 #include "components/sync/base/immutable.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <cstddef> | 8 #include <cstddef> |
9 #include <deque> | 9 #include <deque> |
10 #include <list> | 10 #include <list> |
11 #include <set> | 11 #include <set> |
12 #include <string> | 12 #include <string> |
13 #include <vector> | 13 #include <vector> |
14 | 14 |
15 #include "base/macros.h" | 15 #include "base/macros.h" |
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58 TokenBase(const TokenBase& other) : core_(other.core_) { | 58 TokenBase(const TokenBase& other) : core_(other.core_) { |
59 core_->RecordCopy(); | 59 core_->RecordCopy(); |
60 } | 60 } |
61 | 61 |
62 TokenBase& operator=(const TokenBase& other) { | 62 TokenBase& operator=(const TokenBase& other) { |
63 core_ = other.core_; | 63 core_ = other.core_; |
64 core_->RecordCopy(); | 64 core_->RecordCopy(); |
65 return *this; | 65 return *this; |
66 } | 66 } |
67 | 67 |
68 const char* GetToken() const { | 68 const char* GetToken() const { return core_->GetToken(); } |
69 return core_->GetToken(); | |
70 } | |
71 | 69 |
72 int GetCopyCount() const { | 70 int GetCopyCount() const { return core_->GetCopyCount(); } |
73 return core_->GetCopyCount(); | |
74 } | |
75 | 71 |
76 // For associative containers. | 72 // For associative containers. |
77 bool operator<(const TokenBase& other) const { | 73 bool operator<(const TokenBase& other) const { |
78 return std::string(GetToken()) < std::string(other.GetToken()); | 74 return std::string(GetToken()) < std::string(other.GetToken()); |
79 } | 75 } |
80 | 76 |
81 // STL-style swap. | 77 // STL-style swap. |
82 void swap(TokenBase& other) { | 78 void swap(TokenBase& other) { |
83 using std::swap; | 79 using std::swap; |
84 swap(other.core_, core_); | 80 swap(other.core_, core_); |
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101 void swap(ADLToken& t1, ADLToken& t2) { | 97 void swap(ADLToken& t1, ADLToken& t2) { |
102 t1.Swap(&t2); | 98 t1.Swap(&t2); |
103 } | 99 } |
104 | 100 |
105 } // namespace syncer | 101 } // namespace syncer |
106 | 102 |
107 // Allowed by the standard (17.4.3.1/1). | 103 // Allowed by the standard (17.4.3.1/1). |
108 namespace std { | 104 namespace std { |
109 | 105 |
110 template <> | 106 template <> |
111 void swap(syncer::SpecializationToken& t1, | 107 void swap(syncer::SpecializationToken& t1, syncer::SpecializationToken& t2) { |
112 syncer::SpecializationToken& t2) { | |
113 t1.Swap(&t2); | 108 t1.Swap(&t2); |
114 } | 109 } |
115 | 110 |
116 } // namespace std | 111 } // namespace std |
117 | 112 |
118 namespace syncer { | 113 namespace syncer { |
119 namespace { | 114 namespace { |
120 | 115 |
121 class ImmutableTest : public ::testing::Test {}; | 116 class ImmutableTest : public ::testing::Test {}; |
122 | 117 |
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158 EXPECT_EQ(0, t.GetCopyCount()); | 153 EXPECT_EQ(0, t.GetCopyCount()); |
159 | 154 |
160 ImmutableT immutable_t(&t); | 155 ImmutableT immutable_t(&t); |
161 EXPECT_EQ(token, immutable_t.Get().GetToken()); | 156 EXPECT_EQ(token, immutable_t.Get().GetToken()); |
162 EXPECT_EQ(kEmptyToken, t.GetToken()); | 157 EXPECT_EQ(kEmptyToken, t.GetToken()); |
163 EXPECT_EQ(expect_copies, immutable_t.Get().GetCopyCount() > 0); | 158 EXPECT_EQ(expect_copies, immutable_t.Get().GetCopyCount() > 0); |
164 EXPECT_EQ(expect_copies, t.GetCopyCount() > 0); | 159 EXPECT_EQ(expect_copies, t.GetCopyCount() > 0); |
165 } | 160 } |
166 | 161 |
167 TEST_F(ImmutableTest, Token) { | 162 TEST_F(ImmutableTest, Token) { |
168 RunTokenTest<Token, Immutable<Token> >("Token", true /* expect_copies */); | 163 RunTokenTest<Token, Immutable<Token>>("Token", true /* expect_copies */); |
169 } | 164 } |
170 | 165 |
171 TEST_F(ImmutableTest, TokenSwapMemFnByRef) { | 166 TEST_F(ImmutableTest, TokenSwapMemFnByRef) { |
172 RunTokenTest<Token, Immutable<Token, HasSwapMemFnByRef<Token> > >( | 167 RunTokenTest<Token, Immutable<Token, HasSwapMemFnByRef<Token>>>( |
173 "TokenSwapMemFnByRef", false /* expect_copies */); | 168 "TokenSwapMemFnByRef", false /* expect_copies */); |
174 } | 169 } |
175 | 170 |
176 TEST_F(ImmutableTest, TokenSwapMemFnByPtr) { | 171 TEST_F(ImmutableTest, TokenSwapMemFnByPtr) { |
177 RunTokenTest<Token, Immutable<Token, HasSwapMemFnByPtr<Token> > >( | 172 RunTokenTest<Token, Immutable<Token, HasSwapMemFnByPtr<Token>>>( |
178 "TokenSwapMemFnByPtr", false /* expect_copies */); | 173 "TokenSwapMemFnByPtr", false /* expect_copies */); |
179 } | 174 } |
180 | 175 |
181 TEST_F(ImmutableTest, ADLToken) { | 176 TEST_F(ImmutableTest, ADLToken) { |
182 RunTokenTest<ADLToken, Immutable<ADLToken> >( | 177 RunTokenTest<ADLToken, Immutable<ADLToken>>("ADLToken", |
183 "ADLToken", false /* expect_copies */); | 178 false /* expect_copies */); |
184 } | 179 } |
185 | 180 |
186 TEST_F(ImmutableTest, SpecializationToken) { | 181 TEST_F(ImmutableTest, SpecializationToken) { |
187 RunTokenTest<SpecializationToken, Immutable<SpecializationToken> >( | 182 RunTokenTest<SpecializationToken, Immutable<SpecializationToken>>( |
188 "SpecializationToken", false /* expect_copies */); | 183 "SpecializationToken", false /* expect_copies */); |
189 } | 184 } |
190 | 185 |
191 template <typename C, typename ImmutableC> | 186 template <typename C, typename ImmutableC> |
192 void RunTokenContainerTest(const char* token) { | 187 void RunTokenContainerTest(const char* token) { |
193 SCOPED_TRACE(token); | 188 SCOPED_TRACE(token); |
194 const Token tokens[] = { Token(), Token(token) }; | 189 const Token tokens[] = {Token(), Token(token)}; |
195 const size_t token_count = arraysize(tokens); | 190 const size_t token_count = arraysize(tokens); |
196 C c(tokens, tokens + token_count); | 191 C c(tokens, tokens + token_count); |
197 const int copy_count = c.begin()->GetCopyCount(); | 192 const int copy_count = c.begin()->GetCopyCount(); |
198 EXPECT_GT(copy_count, 0); | 193 EXPECT_GT(copy_count, 0); |
199 for (typename C::const_iterator it = c.begin(); it != c.end(); ++it) { | 194 for (typename C::const_iterator it = c.begin(); it != c.end(); ++it) { |
200 EXPECT_EQ(copy_count, it->GetCopyCount()); | 195 EXPECT_EQ(copy_count, it->GetCopyCount()); |
201 } | 196 } |
202 | 197 |
203 // Make sure that making the container immutable doesn't incur any | 198 // Make sure that making the container immutable doesn't incur any |
204 // copies of the tokens. | 199 // copies of the tokens. |
205 ImmutableC immutable_c(&c); | 200 ImmutableC immutable_c(&c); |
206 EXPECT_TRUE(c.empty()); | 201 EXPECT_TRUE(c.empty()); |
207 ASSERT_EQ(token_count, immutable_c.Get().size()); | 202 ASSERT_EQ(token_count, immutable_c.Get().size()); |
208 int i = 0; | 203 int i = 0; |
209 for (typename C::const_iterator it = c.begin(); it != c.end(); ++it) { | 204 for (typename C::const_iterator it = c.begin(); it != c.end(); ++it) { |
210 EXPECT_EQ(tokens[i].GetToken(), it->GetToken()); | 205 EXPECT_EQ(tokens[i].GetToken(), it->GetToken()); |
211 EXPECT_EQ(copy_count, it->GetCopyCount()); | 206 EXPECT_EQ(copy_count, it->GetCopyCount()); |
212 ++i; | 207 ++i; |
213 } | 208 } |
214 } | 209 } |
215 | 210 |
216 TEST_F(ImmutableTest, Vector) { | 211 TEST_F(ImmutableTest, Vector) { |
217 RunTokenContainerTest<std::vector<Token>, Immutable<std::vector<Token> > >( | 212 RunTokenContainerTest<std::vector<Token>, Immutable<std::vector<Token>>>( |
218 "Vector"); | 213 "Vector"); |
219 } | 214 } |
220 | 215 |
221 TEST_F(ImmutableTest, VectorSwapMemFnByRef) { | 216 TEST_F(ImmutableTest, VectorSwapMemFnByRef) { |
222 RunTokenContainerTest< | 217 RunTokenContainerTest< |
223 std::vector<Token>, | 218 std::vector<Token>, |
224 Immutable<std::vector<Token>, HasSwapMemFnByRef<std::vector<Token> > > >( | 219 Immutable<std::vector<Token>, HasSwapMemFnByRef<std::vector<Token>>>>( |
225 "VectorSwapMemFnByRef"); | 220 "VectorSwapMemFnByRef"); |
226 } | 221 } |
227 | 222 |
228 TEST_F(ImmutableTest, Deque) { | 223 TEST_F(ImmutableTest, Deque) { |
229 RunTokenContainerTest<std::deque<Token>, Immutable<std::deque<Token> > >( | 224 RunTokenContainerTest<std::deque<Token>, Immutable<std::deque<Token>>>( |
230 "Deque"); | 225 "Deque"); |
231 } | 226 } |
232 | 227 |
233 TEST_F(ImmutableTest, List) { | 228 TEST_F(ImmutableTest, List) { |
234 RunTokenContainerTest<std::list<Token>, Immutable<std::list<Token> > >( | 229 RunTokenContainerTest<std::list<Token>, Immutable<std::list<Token>>>("List"); |
235 "List"); | |
236 } | 230 } |
237 | 231 |
238 TEST_F(ImmutableTest, Set) { | 232 TEST_F(ImmutableTest, Set) { |
239 RunTokenContainerTest<std::set<Token>, Immutable<std::set<Token> > >( | 233 RunTokenContainerTest<std::set<Token>, Immutable<std::set<Token>>>("Set"); |
240 "Set"); | |
241 } | 234 } |
242 | 235 |
243 } // namespace | 236 } // namespace |
244 } // namespace syncer | 237 } // namespace syncer |
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