org.checkerframework.common.value.qual.BottomVal Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of framework-all Show documentation

The Checker Framework enhances Java's type system to make it more powerful and useful. This lets software developers detect and prevent errors in their Java programs. The Checker Framework includes compiler plug-ins ("checkers") that find bugs or verify their absence. It also permits you to write your own compiler plug-ins.

There is a newer version: 3.0.0-b2

Show newest version

package org.checkerframework.common.value.qual;

import java.lang.annotation.ElementType;
import java.lang.annotation.Target;
import org.checkerframework.framework.qual.ImplicitFor;
import org.checkerframework.framework.qual.InvisibleQualifier;
import org.checkerframework.framework.qual.LiteralKind;
import org.checkerframework.framework.qual.SubtypeOf;
import org.checkerframework.framework.qual.TargetLocations;
import org.checkerframework.framework.qual.TypeUseLocation;

/**
 * The bottom type in the Constant Value type system. Programmers should rarely write this type.
 *
 * @checker_framework.manual #constant-value-checker Constant Value Checker
 * @checker_framework.manual #bottom-type the bottom type
 */
@InvisibleQualifier
@ImplicitFor(literals = LiteralKind.NULL, typeNames = java.lang.Void.class)
@SubtypeOf({
    ArrayLen.class,
    BoolVal.class,
    DoubleVal.class,
    IntVal.class,
    StringVal.class,
    ArrayLenRange.class,
    IntRange.class,
    IntRangeFromPositive.class,
    IntRangeFromGTENegativeOne.class,
    IntRangeFromNonNegative.class
})
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@TargetLocations({TypeUseLocation.EXPLICIT_LOWER_BOUND, TypeUseLocation.EXPLICIT_UPPER_BOUND})
public @interface BottomVal {}