com.bugvm.rt.bro.EnumMarshalers Maven / Gradle / Ivy
/*
* 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.Marshaler;
import com.bugvm.rt.bro.annotation.MarshalsValue;
/**
* Contains {@link Marshaler}s for {@link Enum}s using {@link Enum#ordinal()} to marshal
* {@link Enum}s to/from the primitive types.
*/
public class EnumMarshalers {
/**
* Default {@link Marshaler} for {@link Enum}s used by the compiler if no {@link Marshaler} can be found.
*/
public static class AsIntMarshaler {
@MarshalsValue
public static > T toObject(Class cls, int ordinal, long flags) {
T[] values = Enum.getSharedConstants(cls);
if (values.length == 0) {
throw new AssertionError("Enum class has no values!");
}
if (ordinal < 0 || ordinal >= values.length) {
Class enumType = values[0].getClass();
throw new IllegalArgumentException("No constant with ordinal "
+ ordinal + " in " + enumType.getName());
}
return values[ordinal];
}
@MarshalsValue
public static int toNative(Enum v, long flags) {
return v.ordinal();
}
}
}