modules/cldc-compact/src/main/java/cc/squirreljme/runtime/cldc/util/CollectionUtils.java

   1 // -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the GNU General Public License v3+, or later.
   7 // See license.mkd for licensing and copyright information.
   8 // ---------------------------------------------------------------------------
   9
  10 package cc.squirreljme.runtime.cldc.util;
  11
  12 import java.util.List;
  13 import java.util.RandomAccess;
  14
  15 /**
  16  * General utilities for collections.
  17  *
  18  * @since 2021/02/25
  19  */
  20 public final class CollectionUtils
  21 {
  22         /**
  23          * Not used.
  24          *
  25          * @since 2021/02/25
  26          */
  27         private CollectionUtils()
  28         {
  29         }
  30
  31         /**
  32          * Wraps the given character list as an integer list.
  33          *
  34          * @param __chars The character list to wrap.
  35          * @return The resultant integer list.
  36          * @throws NullPointerException On null arguments.
  37          * @since 2021/02/25
  38          */
  39         public static List<Integer> asIntegerList(List<Character> __chars)
  40                 throws NullPointerException
  41         {
  42                 if (__chars == null)
  43                         throw new NullPointerException("NARG");
  44
  45                 if (__chars instanceof RandomAccess)
  46                         return new __CharacterIntegerListRandom__(__chars);
  47                 return new __CharacterIntegerListSequential__(__chars);
  48         }
  49 }