Method simplifyNamespaceStd

lib/tokenize.cpp:10363–10414

Add std:: in front of std classes, when using namespace std; was given

// Add std:: in front of std classes, when using namespace std; was given
void Tokenizer::simplifyNamespaceStd()
{
    if (!isCPP())
        return;

    std::set<std::string> userFunctions;

    for (Token* tok = Token::findsimplematch(list.front(), "using namespace std ;"); tok; tok = tok->next()) {
        bool insert = false;
        if (Token::Match(tok, "enum class|struct| %name%| :|{")) { // Don't replace within enum definitions
            skipEnumBody(tok);
        }
        if (!tok->isName() || tok->isKeyword() || tok->isStandardType() || tok->varId())
            continue;
        if (Token::Match(tok->previous(), ".|::|namespace"))
            continue;
        if (Token::simpleMatch(tok->next(), "(")) {
            if (TokenList::isFunctionHead(tok->next(), "{"))
                userFunctions.insert(tok->str());
            else if (TokenList::isFunctionHead(tok->next(), ";")) {
                const Token *start = tok;
                while (Token::Match(start->previous(), "%type%|*|&"))
                    start = start->previous();
                if (start != tok && start->isName() && !start->isKeyword() && (!start->previous() || Token::Match(start->previous(), "[;{}]")))
                    userFunctions.insert(tok->str());
            }
            if ((userFunctions.find(tok->str()) == userFunctions.end() && mSettings.library.matchArguments(tok, "std::" + tok->str())) ||
                (tok->tokAt(-1)->isKeyword() && isLibraryType(tok, mSettings.library)))
                insert = true;
        } else if (Token::simpleMatch(tok->next(), "<") &&
                   (isStdContainerOrIterator(tok, mSettings.library) || isStdSmartPointer(tok, mSettings.library)))
            insert = true;
        else if (isLibraryType(tok, mSettings.library))
            insert = true;
        else if (Token::simpleMatch(tok, "aligned_storage"))
            insert = true;

        if (insert) {
            tok->previous()->insertToken("std");
            tok->previous()->linenr(tok->linenr()); // For stylistic reasons we put the std:: in the same line as the following token
            tok->previous()->fileIndex(tok->fileIndex());
            tok->previous()->insertToken("::");
        }
    }

    for (Token* tok = list.front(); tok; tok = tok->next()) {
        if (Token::simpleMatch(tok, "using namespace std ;")) {
            Token::eraseTokens(tok, tok->tokAt(4));
            tok->deleteThis();
        }
    }
}


void Tokenizer::simplifyMicrosoftMemoryFunctions()