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/*
 * Copyright 2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jf.dexlib2.immutable.reference;

import com.google.common.collect.ImmutableList;
import org.jf.dexlib2.base.reference.BaseMethodProtoReference;
import org.jf.dexlib2.iface.reference.MethodProtoReference;
import org.jf.dexlib2.immutable.util.CharSequenceConverter;
import org.jf.util.ImmutableUtils;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.List;

public class ImmutableMethodProtoReference extends BaseMethodProtoReference implements ImmutableReference {
    @Nonnull protected final ImmutableList parameters;
    @Nonnull protected final String returnType;

    public ImmutableMethodProtoReference(@Nullable ImmutableList parameters,
                                         @Nonnull String returnType) {
        this.parameters = ImmutableUtils.nullToEmptyList(parameters);
        this.returnType = returnType;
    }

    public ImmutableMethodProtoReference(@Nullable Iterable parameters,
                                         @Nonnull String returnType) {
        this.parameters = CharSequenceConverter.immutableStringList(parameters);
        this.returnType = returnType;
    }

    @Nonnull public static ImmutableMethodProtoReference of(@Nonnull MethodProtoReference methodProtoReference) {
        if (methodProtoReference instanceof ImmutableMethodProtoReference) {
            return (ImmutableMethodProtoReference) methodProtoReference;
        }
        return new ImmutableMethodProtoReference(
                methodProtoReference.getParameterTypes(),
                methodProtoReference.getReturnType());
    }

    @Override
    public List getParameterTypes() {
        return parameters;
    }

    @Override
    public String getReturnType() {
        return returnType;
    }
}