Java 类org.mockito.internal.util.collections.ArrayUtils 实例源码

public static Object[] expandVarArgs(final boolean isVarArgs, final Object[] args) {
    if (!isVarArgs || new ArrayUtils().isEmpty(args) || args[args.length - 1] != null && !args[args.length - 1].getClass().isArray()) {
        return args == null ? new Object[0] : args;
    }

    final int nonVarArgsCount = args.length - 1;
    Object[] varArgs;
    if (args[nonVarArgsCount] == null) {
        // in case someone deliberately passed null varArg array
        varArgs = new Object[] { null };
    } else {
        varArgs = ArrayEquals.createObjectArray(args[nonVarArgsCount]);
    }
    final int varArgsCount = varArgs.length;
    Object[] newArgs = new Object[nonVarArgsCount + varArgsCount];
    System.arraycopy(args, 0, newArgs, 0, nonVarArgsCount);
    System.arraycopy(varArgs, 0, newArgs, nonVarArgsCount, varArgsCount);
    return newArgs;
}