oldToNewFunctions as $oldFunction => $newFunction) { if ($currentFunction === $oldFunction) { return $newFunction; } } return null; CODE_SAMPLE , <<<'CODE_SAMPLE' return $this->oldToNewFunctions[$currentFunction] ?? null; CODE_SAMPLE )]); } /** * @innerForeachReturn array> */ public function getNodeTypes() : array { return [StmtsAwareInterface::class]; } /** * @param StmtsAwareInterface $node */ public function refactor(Node $node) : ?Node { if ($node->stmts === null) { return null; } $hasChanged = \false; foreach ($node->stmts as $key => $stmt) { if (!$stmt instanceof Foreach_) { continue; } $foreach = $stmt; if (!$foreach->keyVar instanceof Expr) { continue; } $foreachReturnOrAssign = $this->matchForeachReturnOrAssign($foreach); if ($foreachReturnOrAssign instanceof Expression) { /** @var Assign $innerAssign */ $innerAssign = $foreachReturnOrAssign->expr; if (!$this->nodeComparator->areNodesEqual($foreach->valueVar, $innerAssign->expr)) { return null; } $assign = $this->processForeachNodeWithAssignInside($foreach, $innerAssign); if (!$assign instanceof Assign) { return null; } $node->stmts[$key] = new Expression($assign); $hasChanged = \true; continue; } if ($foreachReturnOrAssign instanceof Return_) { if (!$this->nodeComparator->areNodesEqual($foreach->valueVar, $foreachReturnOrAssign->expr)) { return null; } $nextStmt = $node->stmts[$key + 1] ?? null; if (!$nextStmt instanceof Return_) { continue; } $return = $this->processForeachNodeWithReturnInside($foreach, $foreachReturnOrAssign, $nextStmt); if (!$return instanceof Return_) { continue; } $node->stmts[$key] = $return; // cleanup next return unset($node->stmts[$key + 1]); $hasChanged = \true; } } if ($hasChanged) { return $node; } return null; } public function provideMinPhpVersion() : int { return PhpVersionFeature::NULL_COALESCE; } /** * @todo make assign expr generic * @return Expression|Return_|null */ private function matchForeachReturnOrAssign(Foreach_ $foreach) { if (\count($foreach->stmts) !== 1) { return null; } $onlyForeachStmt = $foreach->stmts[0]; if (!$onlyForeachStmt instanceof If_) { return null; } $if = $onlyForeachStmt; if (!$if->cond instanceof Identical) { return null; } if (\count($if->stmts) !== 1) { return null; } if ($if->else instanceof Else_ || $if->elseifs !== []) { return null; } $foreachExprType = $this->nodeTypeResolver->getNativeType($foreach->expr); if (!$foreachExprType->isArray()->yes()) { return null; } $innerStmt = $if->stmts[0]; if ($innerStmt instanceof Return_) { return $innerStmt; } if (!$innerStmt instanceof Expression) { return null; } $innerNode = $innerStmt->expr; if ($innerNode instanceof Assign) { if ($innerNode->var instanceof ArrayDimFetch) { return null; } return $innerStmt; } return null; } private function processForeachNodeWithReturnInside(Foreach_ $foreach, Return_ $innerForeachReturn, ?Stmt $nextStmt) : ?\PhpParser\Node\Stmt\Return_ { if (!$this->nodeComparator->areNodesEqual($foreach->valueVar, $innerForeachReturn->expr)) { return null; } /** @var If_ $ifNode */ $ifNode = $foreach->stmts[0]; /** @var Identical $identicalNode */ $identicalNode = $ifNode->cond; if ($this->nodeComparator->areNodesEqual($identicalNode->left, $foreach->keyVar)) { $checkedNode = $identicalNode->right; } elseif ($this->nodeComparator->areNodesEqual($identicalNode->right, $foreach->keyVar)) { $checkedNode = $identicalNode->left; } else { return null; } $coalesce = new Coalesce(new ArrayDimFetch($foreach->expr, $checkedNode), $nextStmt instanceof Return_ && $nextStmt->expr instanceof Expr ? $nextStmt->expr : $checkedNode); return new Return_($coalesce); } private function processForeachNodeWithAssignInside(Foreach_ $foreach, Assign $assign) : ?Assign { /** @var If_ $ifNode */ $ifNode = $foreach->stmts[0]; /** @var Identical $identicalNode */ $identicalNode = $ifNode->cond; if ($this->nodeComparator->areNodesEqual($identicalNode->left, $foreach->keyVar)) { $checkedNode = $assign->var; $keyNode = $identicalNode->right; } elseif ($this->nodeComparator->areNodesEqual($identicalNode->right, $foreach->keyVar)) { $checkedNode = $assign->var; $keyNode = $identicalNode->left; } else { return null; } $arrayDimFetch = new ArrayDimFetch($foreach->expr, $keyNode); return new Assign($checkedNode, new Coalesce($arrayDimFetch, $checkedNode)); } }