src/Peach/DF/JsonCodec/Number.php
private function handleFractionPart(Context $context)
    {
        if ($context->current() !== ".") {
            return;
        }
        
        $this->result .= ".";
        $this->isFloat = true;
        $context->next();
        $this->handleFirstDigit($context);
        $this->handleDigitSequence($context);
    }
private function handleFractionPart(Context $context)
    {
        if ($context->current() !== ".") {
            return;
        }
        
        $this->result .= ".";
        $this->isFloat = true;
        $context->next();
        $this->handleFirstDigit($context);
        $this->handleDigitSequence($context);
    }
frac = decimal-point 1*DIGIT

@param Context $context