Could not get class storage for generator

[paragonie-scott]

I was trying to add Psalm to the Travis CI for Latitude and got an interesting new error. (0.3.69)

PHP Fatal error:  Uncaught InvalidArgumentException: Could not get class storage for generator in /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Provider/ClassLikeStorageProvider.php:21
Stack trace:
#0 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/ClassChecker.php(129): Psalm\Provider\ClassLikeStorageProvider->get('generator')
#1 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/ClassLikeChecker.php(947): Psalm\Checker\ClassChecker::classImplements(Object(Psalm\Checker\ProjectChecker), 'generator', 'Iterator')
#2 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/TypeChecker.php(1020): Psalm\Checker\ClassLikeChecker::classExtendsOrImplements(Object(Psalm\Checker\ProjectChecker), 'Generator', 'Iterator')
#3 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/TypeChecker.php(1086): Psalm\Checker\TypeChecker::isObjectContainedByObject(Object(Psalm\Checker\ProjectChecker), Object(Psalm\Type\Atomic\TGenericObject), Object(Psalm\Type\Atomic\TNamedObject))
#4 /mnt/share/latitude/vendor/vimeo/psalm/src/P in /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Provider/ClassLikeStorageProvider.php on line 21

Fatal error: Uncaught InvalidArgumentException: Could not get class storage for generator in /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Provider/ClassLikeStorageProvider.php:21
Stack trace:
#0 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/ClassChecker.php(129): Psalm\Provider\ClassLikeStorageProvider->get('generator')
#1 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/ClassLikeChecker.php(947): Psalm\Checker\ClassChecker::classImplements(Object(Psalm\Checker\ProjectChecker), 'generator', 'Iterator')
#2 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/TypeChecker.php(1020): Psalm\Checker\ClassLikeChecker::classExtendsOrImplements(Object(Psalm\Checker\ProjectChecker), 'Generator', 'Iterator')
#3 /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Checker/TypeChecker.php(1086): Psalm\Checker\TypeChecker::isObjectContainedByObject(Object(Psalm\Checker\ProjectChecker), Object(Psalm\Type\Atomic\TGenericObject), Object(Psalm\Type\Atomic\TNamedObject))
#4 /mnt/share/latitude/vendor/vimeo/psalm/src/P in /mnt/share/latitude/vendor/vimeo/psalm/src/Psalm/Provider/ClassLikeStorageProvider.php on line 21

I think Iterator might be the culprit, but I'm not 100% sure.

[shadowhand]

Looks like it might be due to yield statements.

[muglug]

Yeah it's choking on checking that an Iterator is a Generator. According to the docs, a function with yield can say it returns either a Generator, Iterator, Traversable, or iterable. I'll fix that bug.

function foo() : Iterator {
    foreach ([1, 2, 3] as $i) {
        yield $i;
    }
}

foreach (foo() as $i) {
    echo $i;
}

[muglug]

dev-master has the fix

[muglug]

Also just created the 0.3.70 release

[paragonie-scott]

Wow, that was fast. Thanks! 👍