Method getArgument

src/core/parser.cpp:616–652

}

sptr<Atom> TeXParser::getArgument() throw(ex_parse) {
    skipWhiteSpace();
    wchar_t ch;
    if (_pos < _len)
        ch = _parseString[_pos];
    else
        return sptr<Atom>(new EmptyAtom());

    if (ch == L_GROUP) {
        TeXFormula tf;
        TeXFormula* tmp = _formula;
        _formula = &tf;
        _pos++;
        _group++;
        parse();
        _formula = tmp;
        if (_formula->_root == nullptr) {
            RowAtom* rm = new RowAtom();
            rm->add(tf._root);
            return sptr<Atom>(rm);
        }
        return tf._root;
    }

    if (ch == ESCAPE) {
        auto atom = processEscape();
        if (_insertion) {
            _insertion = false;
            return getArgument();
        }
        return atom;
    }

    auto atom = convertCharacter(ch, true);
    _pos++;
    return atom;
}

pair<int, float> TeXParser::getLength() throw(ex_parse) {
    if (_pos == _len) return make_pair(-1.f, -1.f);