package org.checkerframework.framework.testchecker.testaccumulation.qual;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.checkerframework.framework.qual.SubtypeOf;

/** A test accumulation predicate annotation. */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@SubtypeOf({TestAccumulation.class})
public @interface TestAccumulationPredicate {
  /**
   * A boolean expression indicating which values have been accumulated.
   *
   * @return a boolean expression indicating which values have been accumulated
   * @checker_framework.manual #accumulation-qualifiers
   */
  String value();
}