Possibly undefined local variable

[oliverklee]

In this line when throwing the exception in the else branch, the variable $oVal is not always defined:

            if ($iLastComponentType != CalcFunction::T_OPERAND) {
                $oVal = Value::parsePrimitiveValue($oParserState);
                $oCalcList->addListComponent($oVal);
                $iLastComponentType = CalcFunction::T_OPERAND;
            } else {
                if (in_array($oParserState->peek(), $aOperators)) {
                    if (($oParserState->comes('-') || $oParserState->comes('+'))) {
                        if (
                            $oParserState->peek(1, -1) != ' '
                            || !($oParserState->comes('- ')
                                || $oParserState->comes('+ '))
                        ) {
                            throw new UnexpectedTokenException(
                                " {$oParserState->peek()} ",
                                $oParserState->peek(1, -1) . $oParserState->peek(2),
                                'literal',
                                $oParserState->currentLine()
                            );
                        }
                    }
                    $oCalcList->addListComponent($oParserState->consume(1));
                    $iLastComponentType = CalcFunction::T_OPERATOR;
                } else {
                    throw new UnexpectedTokenException(
                        sprintf(
                            'Next token was expected to be an operand of type %s. Instead "%s" was found.',
                            implode(', ', $aOperators),
                            $oVal
                        ),
                        '',
                        'custom',
                        $oParserState->currentLine()
                    );
                }
            }

I honestly have no idea what a sane default value for that variable could be, or whether it makes sense to remove it from the exception.

@sabberworm Would you be willing to fix this (as you (hopefully) know this code best)?

Note: This will also fix a PHPStan warning.

[sabberworm]

We should probably use $oParserState->peek() instead of $oVal.