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/*
* Copyright (C) 2012 RoboVM AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bugvm.rt.bro;
import com.bugvm.rt.bro.annotation.MachineSizedSInt;
import com.bugvm.rt.bro.annotation.MachineSizedUInt;
import com.bugvm.rt.bro.annotation.Marshaler;
import com.bugvm.rt.bro.annotation.MarshalsValue;
/**
* Implemented by {@link Enum} classes which have an explicit integer value.
*/
@Marshaler(ValuedEnum.AsSignedIntMarshaler.class)
public interface ValuedEnum {
/**
* Returns the integer value of this {@link Enum} item.
*
* @return the value.
*/
long value();
/**
* Marshals a {@link ValuedEnum} as an 8-bit signed value.
*/
public static class AsSignedByteMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, byte value, long flags) {
return AsLongMarshaler.toObject(cls, value, flags);
}
@MarshalsValue
public static byte toNative(Enum v, long flags) {
return (byte) ((ValuedEnum) v).value();
}
}
/**
* Marshals a {@link ValuedEnum} as an 8-bit unsigned value.
*/
public static class AsUnsignedByteMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, byte value, long flags) {
return AsLongMarshaler.toObject(cls, value & 0xffL, flags);
}
@MarshalsValue
public static byte toNative(ValuedEnum v, long flags) {
return (byte) v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 16-bit signed value.
*/
public static class AsSignedShortMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, short value, long flags) {
return AsLongMarshaler.toObject(cls, value, flags);
}
@MarshalsValue
public static short toNative(ValuedEnum v, long flags) {
return (short) v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 16-bit unsigned value.
*/
public static class AsUnsignedShortMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, short value, long flags) {
return AsLongMarshaler.toObject(cls, value & 0xffffL, flags);
}
@MarshalsValue
public static short toNative(ValuedEnum v, long flags) {
return (short) v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 32-bit signed value. This is the
* default marshaler for {@link ValuedEnum}s.
*/
public static class AsSignedIntMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, int value, long flags) {
return AsLongMarshaler.toObject(cls, value, flags);
}
@MarshalsValue
public static int toNative(ValuedEnum v, long flags) {
return (int) v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 32-bit unsigned value.
*/
public static class AsUnsignedIntMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, int value, long flags) {
return AsLongMarshaler.toObject(cls, value & 0xffffffffL, flags);
}
@MarshalsValue
public static int toNative(ValuedEnum v, long flags) {
return (int) v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 64-bit value.
*/
public static class AsLongMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, long value, long flags) {
T[] values = Enum.getSharedConstants(cls);
int length = values.length;
if (length == 0) {
throw new AssertionError("Enum class has no values!");
}
for (int i = 0; i < length; i++) {
Enum e = values[i];
ValuedEnum v = (ValuedEnum) e;
if (v.value() == value) {
return v;
}
}
Class enumType = values[0].getClass();
throw new IllegalArgumentException("No constant with value "
+ value + " (0x" + Long.toHexString(value) + ") found in "
+ enumType.getName());
}
public static long toNative(ValuedEnum v, long flags) {
return v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 32-bit or 64-bit signed value
* depending on the machine word size.
*/
public static class AsMachineSizedSIntMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, @MachineSizedSInt long value, long flags) {
return AsLongMarshaler.toObject(cls, value, flags);
}
public static @MachineSizedSInt long toNative(ValuedEnum v, long flags) {
return v.value();
}
}
/**
* Marshals a {@link ValuedEnum} as a 32-bit or 64-bit unsigned value
* depending on the machine word size.
*/
public static class AsMachineSizedUIntMarshaler {
@MarshalsValue
public static & ValuedEnum> ValuedEnum toObject(Class cls, @MachineSizedUInt long value, long flags) {
return AsLongMarshaler.toObject(cls, value, flags);
}
public static @MachineSizedUInt long toNative(ValuedEnum v, long flags) {
return v.value();
}
}
}
