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<?php
declare (strict_types=1);
namespace Rector\NodeNestingScope;
use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\FunctionLike;
use PhpParser\Node\Stmt\Else_;
use PhpParser\Node\Stmt\If_;
use Rector\Core\PhpParser\Comparing\NodeComparator;
use Rector\Core\PhpParser\Node\BetterNodeFinder;
use Rector\NodeNestingScope\ValueObject\ControlStructure;
final class ScopeNestingComparator
{
/**
* @var Expr[]
*/
private $doubleIfBranchExprs = [];
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\Core\PhpParser\Comparing\NodeComparator
*/
private $nodeComparator;
public function __construct(BetterNodeFinder $betterNodeFinder, NodeComparator $nodeComparator)
{
$this->betterNodeFinder = $betterNodeFinder;
$this->nodeComparator = $nodeComparator;
}
public function isNodeConditionallyScoped(Expr $expr) : bool
{
$foundParent = $this->betterNodeFinder->findParentByTypes($expr, ControlStructure::CONDITIONAL_NODE_SCOPE_TYPES + [FunctionLike::class]);
if (!$foundParent instanceof Node) {
return \false;
}
// is in both if/else branches
if ($this->isInBothIfElseBranch($foundParent, $expr)) {
return \false;
}
if (!$foundParent instanceof Else_) {
return !$foundParent instanceof FunctionLike;
}
if (!$this->nodeComparator->areNodesEqual($expr, $this->doubleIfBranchExprs)) {
return !$foundParent instanceof FunctionLike;
}
return \false;
}
private function isInBothIfElseBranch(Node $foundParentNode, Expr $seekedExpr) : bool
{
if ($foundParentNode instanceof Else_) {
return $this->nodeComparator->isNodeEqual($seekedExpr, $this->doubleIfBranchExprs);
}
if (!$foundParentNode instanceof If_) {
return \false;
}
$foundIfNode = (bool) $this->betterNodeFinder->findFirst($foundParentNode->stmts, function (Node $node) use($seekedExpr) : bool {
return $this->nodeComparator->areNodesEqual($node, $seekedExpr);
});
if (!$foundParentNode->else instanceof Else_) {
return \false;
}
$foundElseNode = (bool) $this->betterNodeFinder->findFirst($foundParentNode->else, function (Node $node) use($seekedExpr) : bool {
return $this->nodeComparator->areNodesEqual($node, $seekedExpr);
});
if ($foundIfNode && $foundElseNode) {
$this->doubleIfBranchExprs[] = $seekedExpr;
return \true;
}
return \false;
}
}