Method parseArguments

src/attributes.cpp:1652–1716

Parse arguments from function signature. This is tricky because commas are used to delimit arguments but are also valid inside template type qualifiers.

    // are used to delimit arguments but are also valid inside template type
    // qualifiers.
    std::vector<std::string> SourceFileAttributesParser::parseArguments(
                                                const std::string& argText) {

        int templateCount = 0;
        int parenCount = 0;
        std::string currentArg;
        std::vector<std::string> args;
        char quote = 0;
        bool escaped = false;
        typedef std::string::const_iterator it_t;
        for (it_t it = argText.begin(); it != argText.end(); ++it) {

            // Store current character
            char ch = *it;

            // Ignore quoted strings and character values in single quotes
            if ( ! quote && (ch == '"' || ch == '\''))
                quote = ch;
            else if (quote && ch == quote && ! escaped)
                quote = 0;

            // Escaped character inside quotes
            if (escaped)
                escaped = false;
            else if (quote && ch == '\\')
                escaped = true;

            // Detect end of argument declaration
            if ( ! quote &&
                (ch == ',') &&
                (templateCount == 0) &&
                (parenCount == 0)) {
                args.push_back(currentArg);
                currentArg.clear();
                continue;
            }

            // Append current character if not a space at start
            if ( ! currentArg.empty() || ch != ' ')
                currentArg.push_back(ch);

            // Count use of potentially enclosed brackets
            if ( ! quote) {
                switch(ch) {
                    case '<':
                        templateCount++;
                        break;
                    case '>':
                        templateCount--;
                        break;
                    case '(':				// #nocov start
                        parenCount++;
                        break;
                    case ')':
                        parenCount--;
                        break;				// #nocov end
                }
            }