rector-src/src/NodeNestingScope/ContextAnalyzer.php at cbf84b548e78986c979ebd3107ace2b89f7fa733 · rectorphp/rector-src · GitHub

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<?php

declare(strict_types=1);

namespace Rector\NodeNestingScope;

use PhpParser\Node;
use PhpParser\Node\Expr\NullsafePropertyFetch;
use PhpParser\Node\Expr\PropertyFetch;
use PhpParser\Node\Expr\StaticPropertyFetch;
use Rector\NodeTypeResolver\Node\AttributeKey;

final class ContextAnalyzer
{
    /**
     * @api
     */
    public function isInLoop(Node $node): bool
    {
        return $node->getAttribute(AttributeKey::IS_IN_LOOP_OR_SWITCH) === true;
    }

    /**
     * @api
     */
    public function isInIf(Node $node): bool
    {
        return $node->getAttribute(AttributeKey::IS_IN_IF) === true;
    }

    public function isChangeableContext(
        PropertyFetch | StaticPropertyFetch | NullsafePropertyFetch $propertyFetch
    ): bool {
        if ($propertyFetch->getAttribute(AttributeKey::IS_UNSET_VAR, false)) {
            return true;
        }

        if ($propertyFetch->getAttribute(AttributeKey::INSIDE_ARRAY_DIM_FETCH, false)) {
            return true;
        }

        if ($propertyFetch->getAttribute(AttributeKey::IS_USED_AS_ARG_BY_REF_VALUE, false) === true) {
            return true;
        }

        return $propertyFetch->getAttribute(AttributeKey::IS_INCREMENT_OR_DECREMENT, false) === true;
    }

    public function isLeftPartOfAssign(Node $node): bool
    {
        if ($node->getAttribute(AttributeKey::IS_BEING_ASSIGNED) === true) {
            return true;
        }

        if ($node->getAttribute(AttributeKey::IS_ASSIGN_REF_EXPR) === true) {
            return true;
        }

        return $node->getAttribute(AttributeKey::IS_ASSIGN_OP_VAR) === true;
    }
}