Class MemberBox

rhino/src/main/java/org/mozilla/javascript/MemberBox.java:28–387

Wrapper class for Method and Constructor instances to cache getParameterTypes() results, recover from IllegalAccessException in some cases and provide serialization support. @author Igor Bukanov

 * @author Igor Bukanov
 */
final class MemberBox implements Serializable {
    @Serial private static final long serialVersionUID = 8260700214130563887L;

    private transient Member memberObject;
    private transient Class<?>[] argTypes;
    private transient Class<?> returnType;
    private transient NullabilityDetector.NullabilityAccessor argNullability;

    transient Function asGetterFunction;
    transient Function asSetterFunction;
    transient Object delegateTo;

    final VarScope scope;

    private static final NullabilityDetector nullDetector =
            ScriptRuntime.loadOneServiceImplementation(NullabilityDetector.class);

    MemberBox(VarScope scope, Method method) {
        this.scope = scope;
        init(method);
    }

    MemberBox(VarScope scope, Constructor<?> constructor) {
        this.scope = scope;
        init(constructor);
    }

    private void init(Method method) {
        this.memberObject = method;
        this.argTypes = method.getParameterTypes();
        this.returnType = method.getReturnType();
    }

    private void init(Constructor<?> constructor) {
        this.memberObject = constructor;
        this.argTypes = constructor.getParameterTypes();
        this.returnType = null;
    }

    Method method() {
        return (Method) memberObject;
    }

    Constructor<?> ctor() {
        return (Constructor<?>) memberObject;
    }

    Member member() {
        return memberObject;
    }

    boolean isMethod() {
        return memberObject instanceof Method;
    }

    boolean isCtor() {
        return memberObject instanceof Constructor;
    }