src/extra166y/ParallelDoubleArrayWithLongMapping.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

package extra166y;

import jsr166y.*;
import static extra166y.Ops.*;
import java.util.*;
import java.util.concurrent.atomic.*;
import java.lang.reflect.Array;

/**
 * A prefix view of ParallelDoubleArray that causes operations to apply
 * to mappings of elements, not to the elements themselves.
 * Instances of this class may be constructed only via prefix
 * methods of ParallelDoubleArray or its other prefix classes.
 */
public abstract class ParallelDoubleArrayWithLongMapping extends AbstractParallelAnyArray.DPap {
    ParallelDoubleArrayWithLongMapping
        (ForkJoinPool ex, int origin, int fence, double[] array) {
        super(ex, origin, fence, array);
    }

    /**
     * Applies the given procedure.
     * @param procedure the procedure
     */
    public void apply(LongProcedure procedure) {
        ex.invoke(new PAS.FJLApply(this, origin, fence, null, procedure));
    }

    /**
     * Returns reduction of mapped elements.
     * @param reducer the reducer
     * @param base the result for an empty array
     * @return reduction
     */
    public long reduce(LongReducer reducer, long base) {
        PAS.FJLReduce f = new PAS.FJLReduce
            (this, origin, fence, null, reducer, base);
        ex.invoke(f);
        return f.result;
    }

    /**
     * Returns the minimum element, or Long.MAX_VALUE if empty.
     * @return minimum element, or Long.MAX_VALUE if empty
     */
    public long min() {
        return reduce(CommonOps.naturalLongMinReducer(), Long.MAX_VALUE);
    }

    /**
     * Returns the minimum element, or Long.MAX_VALUE if empty.
     * @param comparator the comparator
     * @return minimum element, or Long.MAX_VALUE if empty
     */
    public long min(LongComparator comparator) {
        return reduce(CommonOps.longMinReducer(comparator), Long.MAX_VALUE);
    }

    /**
     * Returns the maximum element, or Long.MIN_VALUE if empty.
     * @return maximum element, or Long.MIN_VALUE if empty
     */
    public long max() {
        return reduce(CommonOps.naturalLongMaxReducer(), Long.MIN_VALUE);
    }

    /**
     * Returns the maximum element, or Long.MIN_VALUE if empty.
     * @param comparator the comparator
     * @return maximum element, or Long.MIN_VALUE if empty
     */
    public long max(LongComparator comparator) {
        return reduce(CommonOps.longMaxReducer(comparator), Long.MIN_VALUE);
    }

    /**
     * Returns the sum of elements.
     * @return the sum of elements
     */
    public long sum() {
        return reduce(CommonOps.longAdder(), 0);
    }

    /**
     * Returns summary statistics.
     * @param comparator the comparator to use for
     * locating minimum and maximum elements
     * @return the summary
     */
    public ParallelLongArray.SummaryStatistics summary
        (LongComparator comparator) {
        PAS.FJLStats f = new PAS.FJLStats
            (this, origin, fence, null, comparator);
        ex.invoke(f);
        return f;
    }

    /**
     * Returns summary statistics, using natural comparator.
     * @return the summary
     */
    public ParallelLongArray.SummaryStatistics summary() {
        return summary(CommonOps.naturalLongComparator());
    }

    /**
     * Returns a new ParallelLongArray holding mappings.
     * @return a new ParallelLongArray holding mappings
     */
    public ParallelLongArray all() {
        return new ParallelLongArray(ex, allLongs());
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on mapped elements of the array using the given op.
     * @param op the op
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithDoubleMapping withMapping
        (LongToDouble op);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mapped elements of the array using the given op.
     * @param op the op
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithLongMapping withMapping
        (LongOp op);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mapped elements of the array using the given op.
     * @param op the op
     * @return operation prefix
     */
    public abstract <U> ParallelDoubleArrayWithMapping<U> withMapping
        (LongToObject<? extends U> op);

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V,W,X> ParallelDoubleArrayWithMapping<W> withMapping
        (LongAndObjectToObject<? super V, ? extends W> combiner,
         ParallelArrayWithMapping<X,V> other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V> ParallelDoubleArrayWithMapping<V> withMapping
        (LongAndDoubleToObject<? extends V> combiner,
         ParallelDoubleArrayWithDoubleMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V> ParallelDoubleArrayWithMapping<V> withMapping
        (LongAndLongToObject<? extends V> combiner,
         ParallelLongArrayWithLongMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V,W> ParallelDoubleArrayWithDoubleMapping withMapping
        (LongAndObjectToDouble<? super V> combiner,
         ParallelArrayWithMapping<W,V> other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithDoubleMapping withMapping
        (LongAndDoubleToDouble combiner,
         ParallelDoubleArrayWithDoubleMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithDoubleMapping withMapping
        (LongAndLongToDouble combiner,
         ParallelLongArrayWithLongMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V,W> ParallelDoubleArrayWithLongMapping withMapping
        (LongAndObjectToLong<? super V> combiner,
         ParallelArrayWithMapping<W,V> other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithLongMapping withMapping
        (LongAndDoubleToLong combiner,
         ParallelDoubleArrayWithDoubleMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithLongMapping withMapping
        (BinaryLongOp combiner,
         ParallelLongArrayWithLongMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on mappings of this array using the given mapper that
     * accepts as arguments an element's current index and value
     * (as mapped by preceding mappings, if any), and produces a
     * new value.
     * @param mapper the mapper
     * @return operation prefix
     */
    public abstract <V> ParallelDoubleArrayWithMapping<V> withIndexedMapping
        (IntAndLongToObject<? extends V> mapper);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mappings of this array using the given mapper that
     * accepts as arguments an element's current index and value
     * (as mapped by preceding mappings, if any), and produces a
     * new value.
     * @param mapper the mapper
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithDoubleMapping withIndexedMapping
        (IntAndLongToDouble mapper);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mappings of this array using the given mapper that
     * accepts as arguments an element's current index and value
     * (as mapped by preceding mappings, if any), and produces a
     * new value.
     * @param mapper the mapper
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithLongMapping withIndexedMapping
        (IntAndLongToLong mapper);

    /**
     * Returns an Iterable view to sequentially step through mapped
     * elements also obeying bound and filter constraints, without
     * performing computations to evaluate them in parallel.
     * @return the Iterable view
     */
    public Iterable<Long> sequentially() {
        return new SequentiallyAsLong();
    }
}
Revision:	1.5
Committed:	Sun Jan 18 20:17:32 2015 UTC (9 years, 3 months ago) by jsr166
Branch:	MAIN
Changes since 1.4:	+1 -0 lines
Log Message:	exactly one blank line before and after package statements
#	Content
1	/*
2	* Written by Doug Lea with assistance from members of JCP JSR-166
3	* Expert Group and released to the public domain, as explained at
4	* http://creativecommons.org/publicdomain/zero/1.0/
5	*/
6
7	package extra166y;
8
9	import jsr166y.*;
10	import static extra166y.Ops.*;
11	import java.util.*;
12	import java.util.concurrent.atomic.*;
13	import java.lang.reflect.Array;
14
15	/**
16	* A prefix view of ParallelDoubleArray that causes operations to apply
17	* to mappings of elements, not to the elements themselves.
18	* Instances of this class may be constructed only via prefix
19	* methods of ParallelDoubleArray or its other prefix classes.
20	*/
21	public abstract class ParallelDoubleArrayWithLongMapping extends AbstractParallelAnyArray.DPap {
22	ParallelDoubleArrayWithLongMapping
23	(ForkJoinPool ex, int origin, int fence, double[] array) {
24	super(ex, origin, fence, array);
25	}
26
27	/**
28	* Applies the given procedure.
29	* @param procedure the procedure
30	*/
31	public void apply(LongProcedure procedure) {
32	ex.invoke(new PAS.FJLApply(this, origin, fence, null, procedure));
33	}
34
35	/**
36	* Returns reduction of mapped elements.
37	* @param reducer the reducer
38	* @param base the result for an empty array
39	* @return reduction
40	*/
41	public long reduce(LongReducer reducer, long base) {
42	PAS.FJLReduce f = new PAS.FJLReduce
43	(this, origin, fence, null, reducer, base);
44	ex.invoke(f);
45	return f.result;
46	}
47
48	/**
49	* Returns the minimum element, or Long.MAX_VALUE if empty.
50	* @return minimum element, or Long.MAX_VALUE if empty
51	*/
52	public long min() {
53	return reduce(CommonOps.naturalLongMinReducer(), Long.MAX_VALUE);
54	}
55
56	/**
57	* Returns the minimum element, or Long.MAX_VALUE if empty.
58	* @param comparator the comparator
59	* @return minimum element, or Long.MAX_VALUE if empty
60	*/
61	public long min(LongComparator comparator) {
62	return reduce(CommonOps.longMinReducer(comparator), Long.MAX_VALUE);
63	}
64
65	/**
66	* Returns the maximum element, or Long.MIN_VALUE if empty.
67	* @return maximum element, or Long.MIN_VALUE if empty
68	*/
69	public long max() {
70	return reduce(CommonOps.naturalLongMaxReducer(), Long.MIN_VALUE);
71	}
72
73	/**
74	* Returns the maximum element, or Long.MIN_VALUE if empty.
75	* @param comparator the comparator
76	* @return maximum element, or Long.MIN_VALUE if empty
77	*/
78	public long max(LongComparator comparator) {
79	return reduce(CommonOps.longMaxReducer(comparator), Long.MIN_VALUE);
80	}
81
82	/**
83	* Returns the sum of elements.
84	* @return the sum of elements
85	*/
86	public long sum() {
87	return reduce(CommonOps.longAdder(), 0);
88	}
89
90	/**
91	* Returns summary statistics.
92	* @param comparator the comparator to use for
93	* locating minimum and maximum elements
94	* @return the summary
95	*/
96	public ParallelLongArray.SummaryStatistics summary
97	(LongComparator comparator) {
98	PAS.FJLStats f = new PAS.FJLStats
99	(this, origin, fence, null, comparator);
100	ex.invoke(f);
101	return f;
102	}
103
104	/**
105	* Returns summary statistics, using natural comparator.
106	* @return the summary
107	*/
108	public ParallelLongArray.SummaryStatistics summary() {
109	return summary(CommonOps.naturalLongComparator());
110	}
111
112	/**
113	* Returns a new ParallelLongArray holding mappings.
114	* @return a new ParallelLongArray holding mappings
115	*/
116	public ParallelLongArray all() {
117	return new ParallelLongArray(ex, allLongs());
118	}
119
120	/**
121	* Returns an operation prefix that causes a method to operate
122	* on mapped elements of the array using the given op.
123	* @param op the op
124	* @return operation prefix
125	*/
126	public abstract ParallelDoubleArrayWithDoubleMapping withMapping
127	(LongToDouble op);
128
129	/**
130	* Returns an operation prefix that causes a method to operate
131	* on mapped elements of the array using the given op.
132	* @param op the op
133	* @return operation prefix
134	*/
135	public abstract ParallelDoubleArrayWithLongMapping withMapping
136	(LongOp op);
137
138	/**
139	* Returns an operation prefix that causes a method to operate
140	* on mapped elements of the array using the given op.
141	* @param op the op
142	* @return operation prefix
143	*/
144	public abstract <U> ParallelDoubleArrayWithMapping<U> withMapping
145	(LongToObject<? extends U> op);
146
147	/**
148	* Returns an operation prefix that causes a method to operate
149	* on binary mappings of this array and the other array.
150	* @param combiner the combiner
151	* @param other the other array
152	* @return operation prefix
153	* @throws IllegalArgumentException if other array is a
154	* filtered view (all filters must precede all mappings)
155	*/
156	public <V,W,X> ParallelDoubleArrayWithMapping<W> withMapping
157	(LongAndObjectToObject<? super V, ? extends W> combiner,
158	ParallelArrayWithMapping<X,V> other) {
159	if (other.hasFilter()) throw new IllegalArgumentException();
160	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
161	}
162
163	/**
164	* Returns an operation prefix that causes a method to operate
165	* on binary mappings of this array and the other array.
166	* @param combiner the combiner
167	* @param other the other array
168	* @return operation prefix
169	* @throws IllegalArgumentException if other array is a
170	* filtered view (all filters must precede all mappings)
171	*/
172	public <V> ParallelDoubleArrayWithMapping<V> withMapping
173	(LongAndDoubleToObject<? extends V> combiner,
174	ParallelDoubleArrayWithDoubleMapping other) {
175	if (other.hasFilter()) throw new IllegalArgumentException();
176	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
177	}
178
179	/**
180	* Returns an operation prefix that causes a method to operate
181	* on binary mappings of this array and the other array.
182	* @param combiner the combiner
183	* @param other the other array
184	* @return operation prefix
185	* @throws IllegalArgumentException if other array is a
186	* filtered view (all filters must precede all mappings)
187	*/
188	public <V> ParallelDoubleArrayWithMapping<V> withMapping
189	(LongAndLongToObject<? extends V> combiner,
190	ParallelLongArrayWithLongMapping other) {
191	if (other.hasFilter()) throw new IllegalArgumentException();
192	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
193	}
194
195	/**
196	* Returns an operation prefix that causes a method to operate
197	* on binary mappings of this array and the other array.
198	* @param combiner the combiner
199	* @param other the other array
200	* @return operation prefix
201	* @throws IllegalArgumentException if other array is a
202	* filtered view (all filters must precede all mappings)
203	*/
204	public <V,W> ParallelDoubleArrayWithDoubleMapping withMapping
205	(LongAndObjectToDouble<? super V> combiner,
206	ParallelArrayWithMapping<W,V> other) {
207	if (other.hasFilter()) throw new IllegalArgumentException();
208	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
209	}
210
211	/**
212	* Returns an operation prefix that causes a method to operate
213	* on binary mappings of this array and the other array.
214	* @param combiner the combiner
215	* @param other the other array
216	* @return operation prefix
217	* @throws IllegalArgumentException if other array is a
218	* filtered view (all filters must precede all mappings)
219	*/
220	public ParallelDoubleArrayWithDoubleMapping withMapping
221	(LongAndDoubleToDouble combiner,
222	ParallelDoubleArrayWithDoubleMapping other) {
223	if (other.hasFilter()) throw new IllegalArgumentException();
224	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
225	}
226
227	/**
228	* Returns an operation prefix that causes a method to operate
229	* on binary mappings of this array and the other array.
230	* @param combiner the combiner
231	* @param other the other array
232	* @return operation prefix
233	* @throws IllegalArgumentException if other array is a
234	* filtered view (all filters must precede all mappings)
235	*/
236	public ParallelDoubleArrayWithDoubleMapping withMapping
237	(LongAndLongToDouble combiner,
238	ParallelLongArrayWithLongMapping other) {
239	if (other.hasFilter()) throw new IllegalArgumentException();
240	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
241	}
242
243	/**
244	* Returns an operation prefix that causes a method to operate
245	* on binary mappings of this array and the other array.
246	* @param combiner the combiner
247	* @param other the other array
248	* @return operation prefix
249	* @throws IllegalArgumentException if other array is a
250	* filtered view (all filters must precede all mappings)
251	*/
252	public <V,W> ParallelDoubleArrayWithLongMapping withMapping
253	(LongAndObjectToLong<? super V> combiner,
254	ParallelArrayWithMapping<W,V> other) {
255	if (other.hasFilter()) throw new IllegalArgumentException();
256	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
257	}
258
259	/**
260	* Returns an operation prefix that causes a method to operate
261	* on binary mappings of this array and the other array.
262	* @param combiner the combiner
263	* @param other the other array
264	* @return operation prefix
265	* @throws IllegalArgumentException if other array is a
266	* filtered view (all filters must precede all mappings)
267	*/
268	public ParallelDoubleArrayWithLongMapping withMapping
269	(LongAndDoubleToLong combiner,
270	ParallelDoubleArrayWithDoubleMapping other) {
271	if (other.hasFilter()) throw new IllegalArgumentException();
272	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
273	}
274
275	/**
276	* Returns an operation prefix that causes a method to operate
277	* on binary mappings of this array and the other array.
278	* @param combiner the combiner
279	* @param other the other array
280	* @return operation prefix
281	* @throws IllegalArgumentException if other array is a
282	* filtered view (all filters must precede all mappings)
283	*/
284	public ParallelDoubleArrayWithLongMapping withMapping
285	(BinaryLongOp combiner,
286	ParallelLongArrayWithLongMapping other) {
287	if (other.hasFilter()) throw new IllegalArgumentException();
288	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
289	}
290
291	/**
292	* Returns an operation prefix that causes a method to operate
293	* on mappings of this array using the given mapper that
294	* accepts as arguments an element's current index and value
295	* (as mapped by preceding mappings, if any), and produces a
296	* new value.
297	* @param mapper the mapper
298	* @return operation prefix
299	*/
300	public abstract <V> ParallelDoubleArrayWithMapping<V> withIndexedMapping
301	(IntAndLongToObject<? extends V> mapper);
302
303	/**
304	* Returns an operation prefix that causes a method to operate
305	* on mappings of this array using the given mapper that
306	* accepts as arguments an element's current index and value
307	* (as mapped by preceding mappings, if any), and produces a
308	* new value.
309	* @param mapper the mapper
310	* @return operation prefix
311	*/
312	public abstract ParallelDoubleArrayWithDoubleMapping withIndexedMapping
313	(IntAndLongToDouble mapper);
314
315	/**
316	* Returns an operation prefix that causes a method to operate
317	* on mappings of this array using the given mapper that
318	* accepts as arguments an element's current index and value
319	* (as mapped by preceding mappings, if any), and produces a
320	* new value.
321	* @param mapper the mapper
322	* @return operation prefix
323	*/
324	public abstract ParallelDoubleArrayWithLongMapping withIndexedMapping
325	(IntAndLongToLong mapper);
326
327	/**
328	* Returns an Iterable view to sequentially step through mapped
329	* elements also obeying bound and filter constraints, without
330	* performing computations to evaluate them in parallel.
331	* @return the Iterable view
332	*/
333	public Iterable<Long> sequentially() {
334	return new SequentiallyAsLong();
335	}
336	}