12     private $state = self::PENDING;  variable in GuzzleHttp\\Promise\\Promise
35         if ($this->state === self::PENDING) {
44         if ($this->state === self::FULFILLED) {
68             if ($this->state === self::FULFILLED) {
78         return $this->state;
83         if ($this->state !== self::PENDING) {
103         if ($this->state === self::PENDING) {
118     private function settle($state, $value)  argument
120         if ($this->state !== self::PENDING) {
122             if ($state === $this->state && $value === $this->result) {
125             throw $this->state === $state
126                 ? new \LogicException("The promise is already {$state}.")
127                 : new \LogicException("Cannot change a {$this->state} promise to {$state}");
135         $this->state = $state;
149             $id = $state === self::FULFILLED ? 1 : 2;
221         if ($this->state !== self::PENDING) {
238         if ($this->state === self::PENDING) {
250             if ($this->state === self::PENDING) {