Function parse

src/qt/bitcoinamountfield.cpp:225–239

* Parse a string into a number of base monetary units and * return validity. * @note Must return 0 if !valid. */

     * @note Must return 0 if !valid.
     */
    CAmount parse(const QString &text, bool *valid_out=nullptr) const
    {
        CAmount val = 0;
        bool valid = GUIUtil::parseAssetAmount(current_asset, text, currentUnit, &val);
        if(valid)
        {
            // ELEMENTS: issued assets can have values > MAX_MONEY
            if (val < 0 || (val > BitcoinUnits::maxMoney() && current_asset == Params().GetConsensus().pegged_asset)) {
                valid = false;
            }
        }
        if(valid_out)
            *valid_out = valid;
        return valid ? val : 0;
    }

protected:
    bool event(QEvent *event) override