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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.

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package org.checkerframework.common.value;

import java.util.LinkedHashSet;

import org.checkerframework.common.basetype.BaseTypeChecker;
import org.checkerframework.common.basetype.BaseTypeVisitor;
import org.checkerframework.framework.qual.StubFiles;

/**
 * @author plvines
 *
 * @checker_framework.manual #constant-value-checker Constant Value Checker
 */
@StubFiles("statically-executable.astub")
public class ValueChecker extends BaseTypeChecker {

    @Override
    protected BaseTypeVisitor createSourceVisitor() {
        return new ValueVisitor(this);
    }
    @Override
    protected LinkedHashSet> getImmediateSubcheckerClasses() {
        // Don't call super otherwise MethodVal will be added as a subChecker
        // which creates a circular dependency.
        return new LinkedHashSet>();
    }

    @Override
    public boolean shouldResolveReflection() {
        // Because this checker is a subchecker of MethodVal,
        // reflection can't be resolved.
        return false;
    }

}