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package org.junit.runners.model;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

import org.junit.runners.BlockJUnit4ClassRunner;

/**
 * Represents a field on a test class (currently used only for Rules in
 * {@link BlockJUnit4ClassRunner}, but custom runners can make other uses)
 *
 * @since 4.7
 */
public class FrameworkField extends FrameworkMember {
    private final Field fField;

    FrameworkField(Field field) {
        fField = field;
    }

    @Override
    public String getName() {
        return getField().getName();
    }

    @Override
    public Annotation[] getAnnotations() {
        return fField.getAnnotations();
    }

    @Override
    public boolean isPublic() {
        int modifiers = fField.getModifiers();
        return Modifier.isPublic(modifiers);
    }

    @Override
    public boolean isShadowedBy(FrameworkField otherMember) {
        return otherMember.getName().equals(getName());
    }

    @Override
    public boolean isStatic() {
        int modifiers = fField.getModifiers();
        return Modifier.isStatic(modifiers);
    }

    /**
     * @return the underlying java Field
     */
    public Field getField() {
        return fField;
    }

    /**
     * @return the underlying Java Field type
     * @see java.lang.reflect.Field#getType()
     */
    @Override
    public Class getType() {
        return fField.getType();
    }

    /**
     * Attempts to retrieve the value of this field on {@code target}
     */
    public Object get(Object target) throws IllegalArgumentException, IllegalAccessException {
        return fField.get(target);
    }
}