org.checkerframework.checker.index.qual.SameLen Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of checker-qual-android Show documentation

checker-qual-android contains annotations (type qualifiers) that a programmer writes to specify Java code for type-checking by the Checker Framework. The checker-qual-android artifact is identical to the checker-qual artifact, except that in checker-qual-android annotations have classfile retention. The default Android Gradle plugin retains types annotated with runtime annotations in the main dex, but strips out class-retention annotations.

There is a newer version: 3.42.0-eisop5

Show newest version

package org.checkerframework.checker.index.qual;

import org.checkerframework.framework.qual.JavaExpression;
import org.checkerframework.framework.qual.SubtypeOf;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * An expression whose type has this annotation evaluates to a value that is a sequence, and that
 * sequence has the same length as the given sequences. For example, if {@code b}'s type is
 * annotated with {@code @SameLen("a")}, then {@code a} and {@code b} have the same length.
 *
 * @checker_framework.manual #index-checker Index Checker
 */
@Documented
@Retention(RetentionPolicy.CLASS)
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@SubtypeOf(SameLenUnknown.class)
public @interface SameLen {
    /** A list of other sequences with the same length. */
    @JavaExpression
    String[] value();
}