| 1313 | //--------------------------------------------------------------------------- |
| 1314 | |
| 1315 | static bool checkFunctionUsage(const Function *privfunc, const Scope* scope) |
| 1316 | { |
| 1317 | if (!scope) |
| 1318 | return true; // Assume it is used, if scope is not seen |
| 1319 | |
| 1320 | for (auto func = scope->functionList.cbegin(); func != scope->functionList.cend(); ++func) { |
| 1321 | if (func->functionScope) { |
| 1322 | if (Token::Match(func->tokenDef, "%name% (")) { |
| 1323 | for (const Token *ftok = func->tokenDef->tokAt(2); ftok && ftok->str() != ")"; ftok = ftok->next()) { |
| 1324 | if (Token::Match(ftok, "= %name% [(,)]") && ftok->strAt(1) == privfunc->name()) |
| 1325 | return true; |
| 1326 | if (ftok->str() == "(") |
| 1327 | ftok = ftok->link(); |
| 1328 | } |
| 1329 | } |
| 1330 | for (const Token *ftok = func->functionScope->classDef->linkAt(1); ftok != func->functionScope->bodyEnd; ftok = ftok->next()) { |
| 1331 | if (ftok->function() == privfunc) |
| 1332 | return true; |
| 1333 | if (ftok->varId() == 0U && ftok->str() == privfunc->name()) // TODO: This condition should be redundant |
| 1334 | return true; |
| 1335 | } |
| 1336 | } else if ((func->type != FunctionType::eCopyConstructor && |
| 1337 | func->type != FunctionType::eOperatorEqual && |
| 1338 | !func->isDefault() && !func->isDelete()) || |
| 1339 | func->access != AccessControl::Private) // Assume it is used, if a function implementation isn't seen, but empty private copy constructors and assignment operators are OK |
| 1340 | return true; |
| 1341 | } |
| 1342 | |
| 1343 | for (auto iter = scope->definedTypesMap.cbegin(); iter != scope->definedTypesMap.cend(); ++iter) { |
| 1344 | const Type *type = iter->second; |
| 1345 | if (type->enclosingScope == scope && checkFunctionUsage(privfunc, type->classScope)) |
| 1346 | return true; |
| 1347 | } |
| 1348 | |
| 1349 | for (const Variable &var : scope->varlist) { |
| 1350 | if (var.isStatic()) { |
| 1351 | const Token* tok = Token::findmatch(scope->bodyStart, "%varid% =|(|{", var.declarationId()); |
| 1352 | if (tok) |
| 1353 | tok = tok->tokAt(2); |
| 1354 | while (tok && tok->str() != ";") { |
| 1355 | if (tok->function() == privfunc) |
| 1356 | return true; |
| 1357 | tok = tok->next(); |
| 1358 | } |
| 1359 | } |
| 1360 | } |
| 1361 | |
| 1362 | return false; // Unused in this scope |
| 1363 | } |
| 1364 | |
| 1365 | void CheckClassImpl::privateFunctions() |
| 1366 | { |