com.google.inject.internal.Nullability Maven / Gradle / Ivy
package com.google.inject.internal;
import java.lang.annotation.Annotation;
import com.google.inject.internal.util.Nullable;
/**
* Whether a member supports null values injected.
*
* Support for {@code Nullable} annotations in Guice is loose.
* Any annotation type whose simplename is "Nullable" is sufficient to indicate
* support for null values injected.
*
*
This allows support for JSR-305's
*
* javax.annotation.meta.Nullable annotation and IntelliJ IDEA's
*
* org.jetbrains.annotations.Nullable.
*
* @author [email protected] (Jesse Wilson)
*/
public class Nullability {
private Nullability() {}
public static boolean allowsNull(Annotation[] annotations) {
for(Annotation a : annotations) {
Class type = a.annotationType();
// Check for Nullable.class because our c.g.i.internal.util.Nullable
// gets jarjar'd into $Nullable, and we want extensions that reference
// it to continue working.
if ("Nullable".equals(type.getSimpleName()) || type == Nullable.class) {
return true;
}
}
return false;
}
}