1 /*
2 * Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.util.AbstractList;
25 import java.util.ArrayList;
26 import java.util.Collection;
27 import java.util.Collections;
28 import java.util.HashMap;
29 import java.util.Iterator;
30 import java.util.LinkedHashMap;
31 import java.util.List;
32 import java.util.Map;
33 import java.util.RandomAccess;
34 import java.util.Spliterator;
35 import java.util.function.Consumer;
36 import java.util.function.Function;
37 import java.util.function.Supplier;
38
39 class SpliteratorLateBindingFailFastHelper {
40
41 interface Source<T> {
42 Spliterator<T> spliterator();
43
44 void update();
45
46 default boolean bindOnCharacteristics() {
47 return false;
48 }
49 }
50
51 static class IntSource<T> implements Source<Integer> {
52 final T b;
53 final Function<? super T, Spliterator.OfInt> toSpliterator;
54 final Consumer<T> updater;
55 final boolean bindOnCharacteristics;
56
57 public IntSource(T b, Function<? super T, Spliterator.OfInt> toSpliterator,
58 Consumer<T> updater) {
59 this(b, toSpliterator, updater, false);
60 }
61
62 public IntSource(T b, Function<? super T, Spliterator.OfInt> toSpliterator,
63 Consumer<T> updater, boolean bindOnCharacteristics) {
64 this.b = b;
65 this.toSpliterator = toSpliterator;
66 this.updater = updater;
67 this.bindOnCharacteristics = bindOnCharacteristics;
68 }
69
70 @Override
71 public Spliterator.OfInt spliterator() {
72 return toSpliterator.apply(b);
73 }
74
75 @Override
76 public void update() {
77 updater.accept(b);
78 }
79
80 @Override
81 public boolean bindOnCharacteristics() {
82 return bindOnCharacteristics;
83 }
84 }
85
86 static class SpliteratorDataBuilder<T> {
87 final List<Object[]> data;
88
89 final T newValue;
90
91 final List<T> exp;
92
93 final Map<T, T> mExp;
94
95 SpliteratorDataBuilder(List<Object[]> data, T newValue, List<T> exp) {
96 this.data = data;
97 this.newValue = newValue;
98 this.exp = exp;
99 this.mExp = createMap(exp);
100 }
101
102 Map<T, T> createMap(List<T> l) {
103 Map<T, T> m = new LinkedHashMap<>();
104 for (T t : l) {
105 m.put(t, t);
106 }
107 return m;
108 }
109
110 void add(String description, Supplier<Source<?>> s) {
111 data.add(new Object[]{description, s});
112 }
113
114 void addCollection(Function<Collection<T>, ? extends Collection<T>> f) {
115 class CollectionSource implements Source<T> {
116 final Collection<T> c = f.apply(exp);
117
118 final Consumer<Collection<T>> updater;
119
120 CollectionSource(Consumer<Collection<T>> updater) {
121 this.updater = updater;
122 }
123
124 @Override
125 public Spliterator<T> spliterator() {
126 return c.spliterator();
127 }
128
129 @Override
130 public void update() {
131 updater.accept(c);
132 }
133 }
134
135 String description = "new " + f.apply(Collections.<T>emptyList()).getClass().getName() + ".spliterator() ";
136 add(description + "ADD", () -> new CollectionSource(c -> c.add(newValue)));
137 add(description + "REMOVE", () -> new CollectionSource(c -> c.remove(c.iterator().next())));
138 }
139
140 void addList(Function<Collection<T>, ? extends List<T>> l) {
141 addCollection(l);
142 addCollection(l.andThen(list -> list.subList(0, list.size())));
143 }
144
145 void addMap(Function<Map<T, T>, ? extends Map<T, T>> mapConstructor) {
146 class MapSource<U> implements Source<U> {
147 final Map<T, T> m = mapConstructor.apply(mExp);
148
149 final Collection<U> c;
150
151 final Consumer<Map<T, T>> updater;
152
153 MapSource(Function<Map<T, T>, Collection<U>> f, Consumer<Map<T, T>> updater) {
154 this.c = f.apply(m);
155 this.updater = updater;
156 }
157
158 @Override
159 public Spliterator<U> spliterator() {
160 return c.spliterator();
161 }
162
163 @Override
164 public void update() {
165 updater.accept(m);
166 }
167 }
168
169 Map<String, Consumer<Map<T, T>>> actions = new HashMap<>();
170 actions.put("ADD", m -> m.put(newValue, newValue));
171 actions.put("REMOVE", m -> m.remove(m.keySet().iterator().next()));
172
173 String description = "new " + mapConstructor.apply(Collections.<T, T>emptyMap()).getClass().getName();
174 for (Map.Entry<String, Consumer<Map<T, T>>> e : actions.entrySet()) {
175 add(description + ".keySet().spliterator() " + e.getKey(),
176 () -> new MapSource<>(m -> m.keySet(), e.getValue()));
177 add(description + ".values().spliterator() " + e.getKey(),
178 () -> new MapSource<>(m -> m.values(), e.getValue()));
179 add(description + ".entrySet().spliterator() " + e.getKey(),
180 () -> new MapSource<>(m -> m.entrySet(), e.getValue()));
181 }
182 }
183 }
184
185 static class AbstractRandomAccessListImpl<T> extends AbstractList<T> implements RandomAccess {
186 List<T> l;
187
188 AbstractRandomAccessListImpl(Collection<T> c) {
189 this.l = new ArrayList<>(c);
190 }
191
192 @Override
193 public boolean add(T value) {
194 modCount++;
195 return l.add(value);
196 }
197
198 @Override
199 public Iterator<T> iterator() {
200 return l.iterator();
201 }
202
203 @Override
204 public T get(int index) {
205 return l.get(index);
206 }
207
208 @Override
209 public boolean remove(Object o) {
210 modCount++;
211 return l.remove(o);
212 }
213
214 @Override
215 public int size() {
216 return l.size();
217 }
218
219 @Override
220 public List<T> subList(int fromIndex, int toIndex) {
221 return l.subList(fromIndex, toIndex);
222 }
223 }
224 }