PHPSA\Analyzer\Pass\Expression\Casts

Complexity

Total Complexity

11

Size/Duplication

Total Lines	71
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	3

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	getRegister()	0	12	1
C	pass()	0	47	10

<?php

namespace PHPSA\Analyzer\Pass\Expression;

use PhpParser\Node\Expr;
use PHPSA\Analyzer\Pass\AnalyzerPassInterface;
use PHPSA\Context;
use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use PHPSA\CompiledExpression;

class Casts implements AnalyzerPassInterface
{
    /**
     * @param Expr $expr
     * @param Context $context
     * @return bool
     */
    public function pass(Expr $expr, Context $context)
    {
        $castType = CompiledExpression::UNKNOWN;

        switch (get_class($expr)) {
            case Expr\Cast\Array_::class:
                $castType = CompiledExpression::ARR;
                break;
            case Expr\Cast\Bool_::class:
                $castType = CompiledExpression::BOOLEAN;
                break;
            case Expr\Cast\Int_::class:
                $castType = CompiledExpression::INTEGER;
                break;
            case Expr\Cast\Double::class:
                $castType = CompiledExpression::DOUBLE;
                break;
            case Expr\Cast\Object_::class:
                $castType = CompiledExpression::OBJECT;
                break;
            case Expr\Cast\String_::class:
                $castType = CompiledExpression::STRING;
                break;
        }

        $compiledExpression = $context->getExpressionCompiler()->compile($expr->expr);

The property expr does not seem to exist in PhpParser\Node\Expr.

        $exprType = $compiledExpression->getType();
        $typeName = $compiledExpression->getTypeName();
        
        if ($castType === $exprType) {
            $context->notice(
                'stupid.cast',
                sprintf("You are trying to cast '%s' to '%s'.", $typeName, $typeName),
                $expr
            );
            return true;
        } elseif (get_class($expr) == Expr\Cast\Unset_::class && $exprType === CompiledExpression::NULL) {
            $context->notice(
                'stupid.cast',
                "You are trying to cast 'null' to 'unset' (null).",
                $expr
            );
            return true;
        }
        
        return false;
    }

    /**
     * @return TreeBuilder
     */
    public function getRegister()
    {
        return [
            Expr\Cast\Array_::class,
            Expr\Cast\Bool_::class,
            Expr\Cast\Int_::class,
            Expr\Cast\Double::class,
            Expr\Cast\Object_::class,
            Expr\Cast\String_::class,
            Expr\Cast\Unset_::class,
        ];
    }
}