Method mismatchingContainers

lib/checkstl.cpp:809–867

}

void CheckStlImpl::mismatchingContainers()
{
    logChecker("CheckStl::misMatchingContainers");

    // Check if different containers are used in various calls of standard functions
    const SymbolDatabase *symbolDatabase = mTokenizer->getSymbolDatabase();
    for (const Scope * scope : symbolDatabase->functionScopes) {
        for (const Token* tok = scope->bodyStart->next(); tok != scope->bodyEnd; tok = tok->next()) {
            if (Token::Match(tok, "%comp%|-")) {
                if (checkIteratorPair(tok->astOperand1(), tok->astOperand2()))
                    continue;
            }
            if (!Token::Match(tok, "%name% ( !!)"))
                continue;
            const Token * const ftok = tok;

            const std::vector<const Token *> args = getArguments(ftok);
            if (args.size() < 2)
                continue;

            // Group args together by container
            std::map<int, std::vector<ArgIteratorInfo>> containers;
            for (int argnr = 1; argnr <= args.size(); ++argnr) {
                const Library::ArgumentChecks::IteratorInfo *i = mSettings.library.getArgIteratorInfo(ftok, argnr);
                if (!i)
                    continue;
                const Token * const argTok = args[argnr - 1];
                containers[i->container].emplace_back(ArgIteratorInfo{argTok, i});
            }

            // Lambda is used to escape the nested loops
            [&] {
                for (const auto& p : containers)
                {
                    const std::vector<ArgIteratorInfo>& cargs = p.second;
                    for (ArgIteratorInfo iter1 : cargs) {
                        for (ArgIteratorInfo iter2 : cargs) {
                            if (iter1.tok == iter2.tok)
                                continue;
                            if (iter1.info->first && iter2.info->last &&
                                isSameExpression(false, iter1.tok, iter2.tok, mSettings, false, false))
                                sameIteratorExpressionError(iter1.tok);
                            if (checkIteratorPair(iter1.tok, iter2.tok))
                                return;
                        }
                    }
                }
            }();
        }
    }
    for (const Variable *var : symbolDatabase->variableList()) {
        if (var && var->isStlStringType() && Token::Match(var->nameToken(), "%var% (") &&
            Token::Match(var->nameToken()->tokAt(2), "%name% . begin|cbegin|rbegin|crbegin ( ) , %name% . end|cend|rend|crend ( ) ,|)")) {
            if (var->nameToken()->strAt(2) != var->nameToken()->strAt(8)) {
                mismatchingContainersError(var->nameToken(), var->nameToken()->tokAt(2));
            }
        }
    }