PhpStorm 2020.2 introduced support for PHP union types, which resulted in some PSI-breaking changes.
In earlier versions, type hints in parameters, properties, and return types were parsed inconsistently:
Return types used a separate PhpReturnType wrapper element, which contained the nullability question mark and the actual type's class reference.
Parameters and properties used no wrapper element: class references and nullability question mark were plain children of Parameter or CLASS_FIELDS.
As of PhpStorm 2020.2, class references with the question mark are uniformly wrapped into the PhpTypeDeclaration element, which is the parent for PhpReturnType, PhpFieldType, and PhpParameterType.
If your existing code fetches a class reference directly from the parent element, it is now required to get PhpTypeDeclaration first, and then call PhpTypeDeclaration#getClassReferences().
Before 2020.2:
private void handleParameterBefore(Parameter parameter) { ClassReference classReference = PsiTreeUtil.getChildOfType(parameter, ClassReference.class); handleReference(classReference); }
After 2020.2:
private void handleParameterAfter(Parameter parameter) { PhpTypeDeclaration typeDeclaration = PsiTreeUtil.getChildOfType(parameter, PhpTypeDeclaration.class); for (ClassReference classReference : typeDeclaration.getClassReferences()) { handleReference(classReference); } }
DeprecatedPhpReturnType.getClassReference()
As of PhpStorm 2020.2, PhpReturnType.getClassReference() is deprecated, since there can be multiple class references. This method also became nullable, since in earlier versions an incomplete ? type was parsed just as a question mark, but now it is parsed as PhpTypeDeclaration with empty getClassReferences().
Before 2020.2:
private void handleReturnTypeBefore(PhpReturnType returnType) { ClassReference classReference = returnType.getClassReference(); handleReference(classReference); }
After 2020.2:
private void handleReturnTypeAfter(PhpReturnType returnType) { for (ClassReference classReference : returnType.getClassReferences()) { handleReference(classReference); } }
31 March 2023
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