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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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