private void parseValue(StringBuilder value) {
        if (getChar() != FileSource.END) {
            switch (getChar()) {
                case '*':
                    next();
                    if (getChar() == '*') {
                        next();
                        getNewTag("**", value);
                    } else {
                        getNewTag("*", value);
                    }
                    break;
                case '_':
                    next();
                    if (getChar() == '_') {
                        next();
                        getNewTag("__", value);
                    } else {
                        getNewTag("_", value);
                    }
                    break;
                case '`':
                    next();
                    getNewTag("`", value);
                case '-':
                    next();
                    if (getChar() == '-') {
                        next();
                        getNewTag("--", value);
                    } else {
                        value.append('-');
                    }
                    break;
                default:
                    value.append(parseString());
                    break;
            }
            parseValue(value);
        }
    }

    private void getNewTag(String openTag, StringBuilder value) {
        String curTag = String.valueOf(getChar());
        if (curTag.equals(openTag)) {
            next();
            getLineWithTags(openTag, value);
        } else {
            next();
            if ((curTag + getChar()).equals(openTag)) {
                next();
                getLineWithTags(openTag, value);
            } else {
                parseValue(value);
            }
        }
    }


    private void getLineWithTags(String tag, StringBuilder value) {
        value.insert(0, createOpenTag(tag)).append(createClosedTag(tag));
    }