PHPSA\Compiler\Expression\Operators\PreDec::compile()

Complexity

Conditions	7
Paths	11

Size

Total Lines	37
Code Lines	25

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	11.9044

Importance

Changes	2
Bugs	0	Features	0

<?php
    protected function compile($expr, Context $context)
    {
        if ($expr->var instanceof \PHPParser\Node\Expr\Variable) {
            $variableName = $expr->var->name;
            if ($variableName instanceof Name) {
                $variableName = $variableName->parts[0];
            }

            $variable = $context->getSymbol($variableName);
            if ($variable) {
                $variable->incUse();

                switch ($variable->getType()) {
                    case CompiledExpression::INTEGER:
                    case CompiledExpression::DOUBLE:
                    case CompiledExpression::NUMBER:
                        $variable->dec();
                        return CompiledExpression::fromZvalValue($variable->getValue());
                }

                $context->notice(
                    'predec.variable.wrong-type',
                    'You are trying to use pre decrement operator on variable $' . $variableName .
                    ' with type: ' . $variable->getTypeName(),
                    $expr
                );
            } else {
                $context->notice(
                    'predec.undefined-variable',
                    'You are trying to use pre decrement operator on undefined variable: ' . $variableName,
                    $expr
                );
            }
        }

        return new CompiledExpression();
    }
}