Detect-It-Easy/db/language

// Author: DosX
// E-Mail: collab@kay-software.ru
// GitHub: https://github.com/DosX-dev
// Telegram: @DosX_dev

function _isLangPresent(languageName) {
    return _isResultPresent("language", languageName) || _isResultPresent("~language", languageName);
}

function _isLangDetected() {
    return _getNumberOfResults("language") || _getNumberOfResults("~language");
}

function _setLang(languageName, isPositive, version) {
    if (isPositive == true || isPositive == undefined) {
        // if "C/C++" already detected
        if (_isLangPresent("C/C++") && (languageName == "C" || languageName == "C++")) {
            _removeResult("language", "C/C++");
        }

        // if "C" or "C++"" detected
        if (languageName == "C/C++" && (_isLangPresent("C") || _isLangPresent("C++"))) {
            return null;
        }

        // False-positive detection of C
        if (_isLangPresent("C") && languageName !== "C") {
            _removeResult("language", "C");
        }

        // False-positive detection of C++
        if (_isLangPresent("C++") && languageName !== "C++") {
            _removeResult("language", "C++");
        }

        // If the language already detected
        if (_isLangDetected() && (languageName == "C" || languageName == "C++")) {
            return null;
        }

        if (File.isVerbose() && !_isLangPresent(languageName)) {
            var isHeurResult = (version == "HEUR");

            _setResult((isHeurResult ? "~" : "") + "language", languageName, (version && !isHeurResult ? version : ""), "", "");
        }
    }}