*/ class TokenCollection implements IteratorAggregate, ArrayAccess, Countable { /** @var Token[] */ private $tokens = []; public function addToken(Token $token): void { $this->tokens[] = $token; } public function getIterator(): Iterator { return new ArrayIterator($this->tokens); } public function count(): int { return \count($this->tokens); } public function offsetExists($offset): bool { return isset($this->tokens[$offset]); } /** * @throws TokenCollectionException */ public function offsetGet($offset): Token { if (!$this->offsetExists($offset)) { throw new TokenCollectionException( \sprintf('No Token at offest %s', $offset) ); } return $this->tokens[$offset]; } /** * @param Token $value * * @throws TokenCollectionException */ public function offsetSet($offset, $value): void { if (!\is_int($offset)) { $type = \gettype($offset); throw new TokenCollectionException( \sprintf( 'Offset must be of type integer, %s given', $type === 'object' ? \get_class($value) : $type ) ); } if (!$value instanceof Token) { $type = \gettype($value); throw new TokenCollectionException( \sprintf( 'Value must be of type %s, %s given', Token::class, $type === 'object' ? \get_class($value) : $type ) ); } $this->tokens[$offset] = $value; } public function offsetUnset($offset): void { unset($this->tokens[$offset]); } }