Created
August 8, 2022 22:06
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| package dev.kejona.crossplatforms.serialize; | |
| import io.leangen.geantyref.GenericTypeReflector; | |
| import org.checkerframework.checker.nullness.qual.Nullable; | |
| import org.spongepowered.configurate.objectmapping.meta.Constraint; | |
| import org.spongepowered.configurate.objectmapping.meta.PostProcessor; | |
| import java.lang.annotation.Annotation; | |
| import java.lang.reflect.Type; | |
| public class ConstraintPostProcessor<A extends Annotation> implements PostProcessor.Factory { | |
| private final Class<A> annotationType; | |
| private final Class<?> valueType; | |
| private final Constraint.Factory<A, ?> constraintFactory; | |
| public <V> ConstraintPostProcessor(Class<A> annotation, Class<V> valueType, Constraint.Factory<A, V> constraint) { | |
| this.annotationType = annotation; | |
| this.valueType = valueType; | |
| this.constraintFactory = constraint; | |
| } | |
| public ConstraintPostProcessor(Class<A> annotation, Constraint.Factory<A, Object> constraint) { | |
| this.annotationType = annotation; | |
| this.valueType = Object.class; | |
| this.constraintFactory = constraint; | |
| } | |
| @SuppressWarnings({"unchecked", "rawtypes"}) | |
| @Override | |
| public @Nullable PostProcessor createProcessor(Type type) { | |
| final Class<?> instanceType = GenericTypeReflector.erase(type); | |
| if (valueType.isAssignableFrom(instanceType)) { | |
| final A annotation = instanceType.getAnnotation(annotationType); | |
| if (annotation != null) { | |
| final Constraint constraint = constraintFactory.make(annotation, instanceType); | |
| return constraint::validate; | |
| } | |
| } | |
| return null; | |
| } | |
| } |
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