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Merge #13249: Make objects in range declarations immutable by default. Avoid unnecessary copying of objects in range declarations.

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f34c8c466a Make objects in range declarations immutable by default. Avoid unnecessary copying of objects in range declarations. (practicalswift)

Pull request description:

  Make objects in range declarations immutable by default.

  Rationale:
  * Immutable objects are easier to reason about.
  * Prevents accidental or hard-to-notice change of value.

Tree-SHA512: cad69d35f0cf8a938b848e65dd537c621d96fe3369be306b65ef0cd1baf6cc0a9f28bc230e1e383d810c555a6743d08cb6b2b0bd51856d4611f537a12e5abb8b
This commit is contained in:
Wladimir J. van der Laan
2018-09-04 15:36:09 +02:00
parent bdfeb5dfa8 f34c8c466a
commit 5c24d3b98c
36 changed files with 77 additions and 77 deletions
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4
src/test/checkqueue_tests.cpp
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@@ -155,7 +155,7 @@ static void Correct_Queue_range(std::vector<size_t> range)
}
// Make vChecks here to save on malloc (this test can be slow...)
std::vector<FakeCheckCheckCompletion> vChecks;
for (auto i : range) {
for (const size_t i : range) {
size_t total = i;
FakeCheckCheckCompletion::n_calls = 0;
CCheckQueueControl<FakeCheckCheckCompletion> control(small_queue.get());
@@ -253,7 +253,7 @@ BOOST_AUTO_TEST_CASE(test_CheckQueue_Recovers_From_Failure)
}
for (auto times = 0; times < 10; ++times) {
for (bool end_fails : {true, false}) {
for (const bool end_fails : {true, false}) {
CCheckQueueControl<FailingCheck> control(fail_queue.get());
{
std::vector<FailingCheck> vChecks;

10
src/test/coins_tests.cpp
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@@ -736,7 +736,7 @@ static void CheckAddCoinBase(CAmount base_value, CAmount cache_value, CAmount mo
template <typename... Args>
static void CheckAddCoin(Args&&... args)
{
for (CAmount base_value : {ABSENT, PRUNED, VALUE1})
for (const CAmount base_value : {ABSENT, PRUNED, VALUE1})
CheckAddCoinBase(base_value, std::forward<Args>(args)...);
}
@@ -848,10 +848,10 @@ BOOST_AUTO_TEST_CASE(ccoins_write)
// they would be too repetitive (the parent cache is never updated in these
// cases). The loop below covers these cases and makes sure the parent cache
// is always left unchanged.
for (CAmount parent_value : {ABSENT, PRUNED, VALUE1})
for (CAmount child_value : {ABSENT, PRUNED, VALUE2})
for (char parent_flags : parent_value == ABSENT ? ABSENT_FLAGS : FLAGS)
for (char child_flags : child_value == ABSENT ? ABSENT_FLAGS : CLEAN_FLAGS)
for (const CAmount parent_value : {ABSENT, PRUNED, VALUE1})
for (const CAmount child_value : {ABSENT, PRUNED, VALUE2})
for (const char parent_flags : parent_value == ABSENT ? ABSENT_FLAGS : FLAGS)
for (const char child_flags : child_value == ABSENT ? ABSENT_FLAGS : CLEAN_FLAGS)
CheckWriteCoins(parent_value, child_value, parent_value, parent_flags, child_flags, parent_flags);
}

6
src/test/cuckoocache_tests.cpp
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@@ -82,11 +82,11 @@ static double test_cache(size_t megabytes, double load)
*/
std::vector<uint256> hashes_insert_copy = hashes;
/** Do the insert */
for (uint256& h : hashes_insert_copy)
for (const uint256& h : hashes_insert_copy)
set.insert(h);
/** Count the hits */
uint32_t count = 0;
for (uint256& h : hashes)
for (const uint256& h : hashes)
count += set.contains(h, false);
double hit_rate = ((double)count) / ((double)n_insert);
return hit_rate;
@@ -323,7 +323,7 @@ static void test_cache_generations()
reads.push_back(inserts[i]);
for (uint32_t i = n_insert - (n_insert / 4); i < n_insert; ++i)
reads.push_back(inserts[i]);
for (auto h : inserts)
for (const auto& h : inserts)
c.insert(h);
}
};

10
src/test/dbwrapper_tests.cpp
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@@ -26,7 +26,7 @@ BOOST_FIXTURE_TEST_SUITE(dbwrapper_tests, BasicTestingSetup)
BOOST_AUTO_TEST_CASE(dbwrapper)
{
// Perform tests both obfuscated and non-obfuscated.
for (bool obfuscate : {false, true}) {
for (const bool obfuscate : {false, true}) {
fs::path ph = SetDataDir(std::string("dbwrapper").append(obfuscate ? "_true" : "_false"));
CDBWrapper dbw(ph, (1 << 20), true, false, obfuscate);
char key = 'k';
@@ -46,7 +46,7 @@ BOOST_AUTO_TEST_CASE(dbwrapper)
BOOST_AUTO_TEST_CASE(dbwrapper_batch)
{
// Perform tests both obfuscated and non-obfuscated.
for (bool obfuscate : {false, true}) {
for (const bool obfuscate : {false, true}) {
fs::path ph = SetDataDir(std::string("dbwrapper_batch").append(obfuscate ? "_true" : "_false"));
CDBWrapper dbw(ph, (1 << 20), true, false, obfuscate);
@@ -82,7 +82,7 @@ BOOST_AUTO_TEST_CASE(dbwrapper_batch)
BOOST_AUTO_TEST_CASE(dbwrapper_iterator)
{
// Perform tests both obfuscated and non-obfuscated.
for (bool obfuscate : {false, true}) {
for (const bool obfuscate : {false, true}) {
fs::path ph = SetDataDir(std::string("dbwrapper_iterator").append(obfuscate ? "_true" : "_false"));
CDBWrapper dbw(ph, (1 << 20), true, false, obfuscate);
@@ -216,7 +216,7 @@ BOOST_AUTO_TEST_CASE(iterator_ordering)
if (x & 1) BOOST_CHECK(dbw.Write(key, value));
}
for (int seek_start : {0x00, 0x80}) {
for (const int seek_start : {0x00, 0x80}) {
it->Seek((uint8_t)seek_start);
for (unsigned int x=seek_start; x<255; ++x) {
uint8_t key;
@@ -291,7 +291,7 @@ BOOST_AUTO_TEST_CASE(iterator_string_ordering)
}
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper&>(dbw).NewIterator());
for (int seek_start : {0, 5}) {
for (const int seek_start : {0, 5}) {
snprintf(buf, sizeof(buf), "%d", seek_start);
StringContentsSerializer seek_key(buf);
it->Seek(seek_key);

2
src/test/getarg_tests.cpp
View File

@@ -24,7 +24,7 @@ static void ResetArgs(const std::string& strArg)
// Convert to char*:
std::vector<const char*> vecChar;
for (std::string& s : vecArg)
for (const std::string& s : vecArg)
vecChar.push_back(s.c_str());
std::string error;

2
src/test/key_io_tests.cpp
View File

@@ -136,7 +136,7 @@ BOOST_AUTO_TEST_CASE(key_io_invalid)
std::string exp_base58string = test[0].get_str();
// must be invalid as public and as private key
for (auto chain : { CBaseChainParams::MAIN, CBaseChainParams::TESTNET, CBaseChainParams::REGTEST }) {
for (const auto& chain : { CBaseChainParams::MAIN, CBaseChainParams::TESTNET, CBaseChainParams::REGTEST }) {
SelectParams(chain);
destination = DecodeDestination(exp_base58string);
BOOST_CHECK_MESSAGE(!IsValidDestination(destination), "IsValid pubkey in mainnet:" + strTest);

2
src/test/skiplist_tests.cpp
View File

@@ -146,7 +146,7 @@ BOOST_AUTO_TEST_CASE(findearliestatleast_test)
BOOST_AUTO_TEST_CASE(findearliestatleast_edge_test)
{
std::list<CBlockIndex> blocks;
for (unsigned int timeMax : {100, 100, 100, 200, 200, 200, 300, 300, 300}) {
for (const unsigned int timeMax : {100, 100, 100, 200, 200, 200, 300, 300, 300}) {
CBlockIndex* prev = blocks.empty() ? nullptr : &blocks.back();
blocks.emplace_back();
blocks.back().nHeight = prev ? prev->nHeight + 1 : 0;

2
src/test/test_bitcoin.cpp
View File

@@ -29,7 +29,7 @@ void CConnmanTest::AddNode(CNode& node)
void CConnmanTest::ClearNodes()
{
LOCK(g_connman->cs_vNodes);
for (CNode* node : g_connman->vNodes) {
for (const CNode* node : g_connman->vNodes) {
delete node;
}
g_connman->vNodes.clear();

2
src/test/transaction_tests.cpp
View File

@@ -65,7 +65,7 @@ unsigned int ParseScriptFlags(std::string strFlags)
std::vector<std::string> words;
boost::algorithm::split(words, strFlags, boost::algorithm::is_any_of(","));
for (std::string word : words)
for (const std::string& word : words)
{
if (!mapFlagNames.count(word))
BOOST_ERROR("Bad test: unknown verification flag '" << word << "'");

4
src/test/util_tests.cpp
View File

@@ -245,7 +245,7 @@ BOOST_AUTO_TEST_CASE(util_GetBoolArg)
testArgs.ParseParameters(7, (char**)argv_test, error);
// Each letter should be set.
for (char opt : "abcdef")
for (const char opt : "abcdef")
BOOST_CHECK(testArgs.IsArgSet({'-', opt}) || !opt);
// Nothing else should be in the map
@@ -394,7 +394,7 @@ BOOST_AUTO_TEST_CASE(util_ReadConfigStream)
&& test_args.GetArg("-iii", "xxx") == "xxx"
);
for (bool def : {false, true}) {
for (const bool def : {false, true}) {
BOOST_CHECK(test_args.GetBoolArg("-a", def)
&& test_args.GetBoolArg("-b", def)
&& !test_args.GetBoolArg("-ccc", def)