<?php declare(strict_types=1); namespace PhpParser\Node\Expr; use PhpParser\Node\Expr; class Yield_ extends Expr { /** @var null|Expr Key expression */ public $key; /** @var null|Expr Value expression */ public $value; /** * Constructs a yield expression node. * * @param null|Expr $value Value expression * @param null|Expr $key Key expression * @param array $attributes Additional attributes */ public function __construct(Expr $value = null, Expr $key = null, array $attributes = []) { $this->attributes = $attributes; $this->key = $key; $this->value = $value; } public function getSubNodeNames() : array { return ['key', 'value']; } public function getType() : string { return 'Expr_Yield'; } }