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Java implementation of the Ethereum protocol adapted to use for Hedera Smart Contract Service

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/*
 * Copyright (c) [2016] [  ]
 * This file is part of the ethereumJ library.
 *
 * The ethereumJ library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * The ethereumJ library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the ethereumJ library. If not, see .
 */
package org.ethereum.util.blockchain;

import org.ethereum.core.CallTransaction;

import java.util.Arrays;
import java.util.List;

/**
 * Created by Anton Nashatyrev on 26.07.2016.
 */
public abstract class SolidityCallResult extends TransactionResult {
    public Object getReturnValue() {
        Object[] returnValues = getReturnValues();
        return isIncluded() && returnValues.length > 0 ? returnValues[0] : null;
    }

    public Object[] getReturnValues() {
        if (!isIncluded()) return null;
        byte[] executionResult = getReceipt().getExecutionResult();
        return getFunction().decodeResult(executionResult);
    }

    public abstract CallTransaction.Function getFunction();

    public boolean isSuccessful() {
        return isIncluded() && getReceipt().isSuccessful();
    }

    public abstract List getEvents();

    @Override
    public String toString() {
        String ret = "SolidityCallResult{" +
                getFunction() + ": " +
                (isIncluded() ? "EXECUTED" : "PENDING") + ", ";
        if (isIncluded()) {
            ret += isSuccessful() ? "SUCCESS" : ("ERR (" + getReceipt().getError() + ")");
            ret += ", ";
            if (isSuccessful()) {
                ret += "Ret: " + Arrays.toString(getReturnValues()) + ", ";
                ret += "Events: " + getEvents() + ", ";
            }
        }
        return ret + "}";
    }
}