| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.commons.rng.simple; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| |
| /** |
| * The purpose of this class is to provide the list of all generators |
| * implemented in the library. |
| * The list must be updated with each new RNG implementation. |
| * |
| * @see #list() |
| * @see #list32() |
| * @see #list64() |
| */ |
| public class ProvidersList { |
| /** List of all RNGs implemented in the library. */ |
| private static final List<Data[]> LIST = new ArrayList<Data[]>(); |
| /** List of 32-bits based RNGs. */ |
| private static final List<Data[]> LIST32 = new ArrayList<Data[]>(); |
| /** List of 64-bits based RNGs. */ |
| private static final List<Data[]> LIST64 = new ArrayList<Data[]>(); |
| |
| static { |
| try { |
| // "int"-based RNGs. |
| add(LIST32, RandomSource.JDK, -122333444455555L); |
| add(LIST32, RandomSource.MT, new int[] { -123, -234, -345 }); |
| add(LIST32, RandomSource.WELL_512_A, new int[] { -23, -34, -45 }); |
| add(LIST32, RandomSource.WELL_1024_A, new int[] { -1234, -2345, -3456 }); |
| add(LIST32, RandomSource.WELL_19937_A, new int[] { -2123, -3234, -4345 }); |
| add(LIST32, RandomSource.WELL_19937_C, new int[] { -123, -234, -345, -456 }); |
| add(LIST32, RandomSource.WELL_44497_A, new int[] { -12345, -23456, -34567 }); |
| add(LIST32, RandomSource.WELL_44497_B, new int[] { 123, 234, 345 }); |
| add(LIST32, RandomSource.ISAAC, new int[] { 123, -234, 345, -456 }); |
| add(LIST32, RandomSource.MWC_256, new int[] { 12, -1234, -3456, 45678 }); |
| add(LIST32, RandomSource.KISS, new int[] { 12, 1234, 23456, 345678 }); |
| // ... add more here. |
| |
| // "long"-based RNGs. |
| add(LIST64, RandomSource.SPLIT_MIX_64, -988777666655555L); |
| add(LIST64, RandomSource.XOR_SHIFT_1024_S, new long[] { 123456L, 234567L, -345678L }); |
| add(LIST64, RandomSource.TWO_CMRES, 55443322); |
| add(LIST64, RandomSource.TWO_CMRES_SELECT, -987654321, 5, 8); |
| add(LIST64, RandomSource.MT_64, new long[] { 1234567L, 2345678L, -3456789L }); |
| // ... add more here. |
| |
| // Do not modify the remaining statements. |
| // Complete list. |
| LIST.addAll(LIST32); |
| LIST.addAll(LIST64); |
| } catch (Exception e) { |
| System.err.println("Unexpected exception while creating the list of generators: " + e); |
| e.printStackTrace(System.err); |
| throw new RuntimeException(e); |
| } |
| } |
| |
| /** |
| * Class contains only static methods. |
| */ |
| private ProvidersList() {} |
| |
| /** |
| * Helper to statisfy Junit requirement that each parameter set contains |
| * the same number of objects. |
| */ |
| private static void add(List<Data[]> list, |
| RandomSource source, |
| Object ... data) { |
| final RandomSource rng = source; |
| final Object seed = data.length > 0 ? data[0] : null; |
| final Object[] args = data.length > 1 ? Arrays.copyOfRange(data, 1, data.length) : null; |
| |
| list.add(new Data[] { new Data(rng, seed, args) }); |
| } |
| |
| /** |
| * Subclasses that are "parametric" tests can forward the call to |
| * the "@Parameters"-annotated method to this method. |
| * |
| * @return the list of all generators. |
| */ |
| public static Iterable<Data[]> list() { |
| return Collections.unmodifiableList(LIST); |
| } |
| |
| /** |
| * Subclasses that are "parametric" tests can forward the call to |
| * the "@Parameters"-annotated method to this method. |
| * |
| * @return the list of 32-bits based generators. |
| */ |
| public static Iterable<Data[]> list32() { |
| return Collections.unmodifiableList(LIST32); |
| } |
| |
| /** |
| * Subclasses that are "parametric" tests can forward the call to |
| * the "@Parameters"-annotated method to this method. |
| * |
| * @return the list of 64-bits based generators. |
| */ |
| public static Iterable<Data[]> list64() { |
| return Collections.unmodifiableList(LIST64); |
| } |
| |
| /** |
| * Helper. |
| * Better not to mix Junit assumptions of the usage of "Object[]". |
| */ |
| public static class Data { |
| private final RandomSource source; |
| private final Object seed; |
| private final Object[] args; |
| |
| public Data(RandomSource source, |
| Object seed, |
| Object[] args) { |
| this.source = source; |
| this.seed = seed; |
| this.args = args; |
| } |
| |
| public RandomSource getSource() { |
| return source; |
| } |
| |
| public Object getSeed() { |
| return seed; |
| } |
| |
| public Object[] getArgs() { |
| return args == null ? null : Arrays.copyOf(args, args.length); |
| } |
| |
| @Override |
| public String toString() { |
| return source.toString() + " seed=" + seed + " args=" + Arrays.toString(args); |
| } |
| } |
| } |