*/ class BindGenerator implements Generator { private $innerGenerator; private $outerGeneratorFactory; public function __construct($innerGenerator, $outerGeneratorFactory) { $this->innerGenerator = $innerGenerator; $this->outerGeneratorFactory = $outerGeneratorFactory; } public function __invoke($size, RandomRange $rand) { $innerGeneratorValue = $this->innerGenerator->__invoke($size, $rand); $outerGenerator = call_user_func($this->outerGeneratorFactory, $innerGeneratorValue->unbox()); $outerGeneratorValue = $outerGenerator->__invoke($size, $rand); return $this->packageGeneratedValueSingle( $outerGeneratorValue, $innerGeneratorValue ); } public function shrink(GeneratedValue $element) { list($outerGeneratorValue, $innerGeneratorValue) = $element->input(); // TODO: shrink also the second generator $outerGenerator = call_user_func($this->outerGeneratorFactory, $innerGeneratorValue->unbox()); $shrinkedOuterGeneratorValue = $outerGenerator->shrink($outerGeneratorValue); return $this->packageGeneratedValueSingle( $shrinkedOuterGeneratorValue, $innerGeneratorValue ); } private function packageGeneratedValueSingle($outerGeneratorValue, $innerGeneratorValue) { return GeneratedValueSingle::fromValueAndInput( $outerGeneratorValue->unbox(), [ $outerGeneratorValue, $innerGeneratorValue, ], 'bind' ); } }