src/extra166y/ParallelLongArrayWithFilter.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.*;

/**
 * A prefix view of ParallelLongArray that causes operations to apply
 * only to elements for which a selector returns true.  Instances of
 * this class may be constructed only via prefix methods of
 * ParallelLongArray or its other prefix classes.
 */
public abstract class ParallelLongArrayWithFilter extends ParallelLongArrayWithLongMapping {
    ParallelLongArrayWithFilter
        (ForkJoinPool ex, int origin, int fence, long[] array) {
        super(ex, origin, fence, array);
    }

    /**
     * Replaces elements with the results of applying the given
     * op to their current values.
     * @param op the op
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithMapping(LongOp op) {
        ex.invoke(new PAS.FJLTransform
                  (this, origin, fence, null, op));
        return this;
    }

    /**
     * Replaces elements with the results of applying the given
     * op to their indices.
     * @param op the op
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithMappedIndex(IntToLong op) {
        ex.invoke(new PAS.FJLIndexMap
                  (this, origin, fence, null, op));
        return this;
    }

    /**
     * Replaces elements with the results of applying the given
     * mapping to each index and current element value.
     * @param op the op
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithMappedIndex(IntAndLongToLong op) {
        ex.invoke(new PAS.FJLBinaryIndexMap
                  (this, origin, fence, null, op));
        return this;
    }

    /**
     * Replaces elements with results of applying the given
     * generator.
     * @param generator the generator
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithGeneratedValue(LongGenerator generator) {
        ex.invoke(new PAS.FJLGenerate
                  (this, origin, fence, null, generator));
        return this;
    }

    /**
     * Replaces elements with the given value.
     * @param value the value
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithValue(long value) {
        ex.invoke(new PAS.FJLFill
                  (this, origin, fence, null, value));
        return this;
    }

    /**
     * Replaces elements with results of applying
     * {@code op(thisElement, otherElement)}.
     * @param other the other array
     * @param combiner the combiner
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner,
                                   ParallelLongArrayWithLongMapping other) {
        ex.invoke(new PAS.FJLPACombineInPlace
                  (this, origin, fence, null,
                   other, other.origin - origin, combiner));
        return this;
    }

    /**
     * Replaces elements with results of applying
     * {@code op(thisElement, otherElement)}.
     * @param other the other array
     * @param combiner the combiner
     * @return this (to simplify use in expressions)
     */
    public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner,
                                   long[] other) {
        ex.invoke(new PAS.FJLCombineInPlace
                  (this, origin, fence, null, other,
                   -origin, combiner));
        return this;
    }

    /**
     * Returns a new ParallelLongArray containing only unique
     * elements (that is, without any duplicates).
     * @return the new ParallelLongArray
     */
    public ParallelLongArray allUniqueElements() {
        PAS.UniquifierTable tab = new PAS.UniquifierTable
            (fence - origin, this, false);
        PAS.FJLUniquifier f = new PAS.FJLUniquifier
            (this, origin, fence, null, tab);
        ex.invoke(f);
        long[] res = tab.uniqueLongs(f.count);
        return new ParallelLongArray(ex, res);
    }


    /**
     * Returns an operation prefix that causes a method to operate
     * only on elements for which the current selector (if
     * present) and the given selector returns true.
     * @param selector the selector
     * @return operation prefix
     */
    public abstract ParallelLongArrayWithFilter withFilter(LongPredicate selector);

    /**
     * Returns an operation prefix that causes a method to operate
     * only on elements for which the current selector (if
     * present) and the given binary selector returns true.
     * @param selector the selector
     * @return operation prefix
     */
    public ParallelLongArrayWithFilter withFilter
        (BinaryLongPredicate selector,
         ParallelLongArrayWithLongMapping other) {
        return withIndexedFilter(AbstractParallelAnyArray.indexedSelector(selector, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * only on elements for which the current selector (if
     * present) and the given indexed selector returns true.
     * @param selector the selector
     * @return operation prefix
     */
    public abstract ParallelLongArrayWithFilter withIndexedFilter
        (IntAndLongPredicate selector);

    /**
     * Returns true if all elements at the same relative positions
     * of this and other array are equal.
     * @param other the other array
     * @return true if equal
     */
    public boolean hasAllEqualElements(ParallelLongArrayWithLongMapping other) {
        return withFilter(CommonOps.longInequalityPredicate(),
                          other).anyIndex() < 0;
    }

    final void leafTransfer(int lo, int hi, long[] dest, int offset) {
        final long[] a = this.array;
        for (int i = lo; i < hi; ++i)
            dest[offset++] = (a[i]);
    }

    final void leafTransferByIndex(int[] indices, int loIdx, int hiIdx,
                                   long[] dest, int offset) {
        final long[] a = this.array;
        for (int i = loIdx; i < hiIdx; ++i)
            dest[offset++] = (a[indices[i]]);
    }

    final long lget(int i) { return this.array[i]; }
}
Revision:	1.9
Committed:	Thu Feb 26 06:53:34 2015 UTC (9 years, 2 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.8:	+0 -2 lines
Log Message:	delete unused imports
#	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
14	/**
15	* A prefix view of ParallelLongArray that causes operations to apply
16	* only to elements for which a selector returns true. Instances of
17	* this class may be constructed only via prefix methods of
18	* ParallelLongArray or its other prefix classes.
19	*/
20	public abstract class ParallelLongArrayWithFilter extends ParallelLongArrayWithLongMapping {
21	ParallelLongArrayWithFilter
22	(ForkJoinPool ex, int origin, int fence, long[] array) {
23	super(ex, origin, fence, array);
24	}
25
26	/**
27	* Replaces elements with the results of applying the given
28	* op to their current values.
29	* @param op the op
30	* @return this (to simplify use in expressions)
31	*/
32	public ParallelLongArrayWithFilter replaceWithMapping(LongOp op) {
33	ex.invoke(new PAS.FJLTransform
34	(this, origin, fence, null, op));
35	return this;
36	}
37
38	/**
39	* Replaces elements with the results of applying the given
40	* op to their indices.
41	* @param op the op
42	* @return this (to simplify use in expressions)
43	*/
44	public ParallelLongArrayWithFilter replaceWithMappedIndex(IntToLong op) {
45	ex.invoke(new PAS.FJLIndexMap
46	(this, origin, fence, null, op));
47	return this;
48	}
49
50	/**
51	* Replaces elements with the results of applying the given
52	* mapping to each index and current element value.
53	* @param op the op
54	* @return this (to simplify use in expressions)
55	*/
56	public ParallelLongArrayWithFilter replaceWithMappedIndex(IntAndLongToLong op) {
57	ex.invoke(new PAS.FJLBinaryIndexMap
58	(this, origin, fence, null, op));
59	return this;
60	}
61
62	/**
63	* Replaces elements with results of applying the given
64	* generator.
65	* @param generator the generator
66	* @return this (to simplify use in expressions)
67	*/
68	public ParallelLongArrayWithFilter replaceWithGeneratedValue(LongGenerator generator) {
69	ex.invoke(new PAS.FJLGenerate
70	(this, origin, fence, null, generator));
71	return this;
72	}
73
74	/**
75	* Replaces elements with the given value.
76	* @param value the value
77	* @return this (to simplify use in expressions)
78	*/
79	public ParallelLongArrayWithFilter replaceWithValue(long value) {
80	ex.invoke(new PAS.FJLFill
81	(this, origin, fence, null, value));
82	return this;
83	}
84
85	/**
86	* Replaces elements with results of applying
87	* {@code op(thisElement, otherElement)}.
88	* @param other the other array
89	* @param combiner the combiner
90	* @return this (to simplify use in expressions)
91	*/
92	public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner,
93	ParallelLongArrayWithLongMapping other) {
94	ex.invoke(new PAS.FJLPACombineInPlace
95	(this, origin, fence, null,
96	other, other.origin - origin, combiner));
97	return this;
98	}
99
100	/**
101	* Replaces elements with results of applying
102	* {@code op(thisElement, otherElement)}.
103	* @param other the other array
104	* @param combiner the combiner
105	* @return this (to simplify use in expressions)
106	*/
107	public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner,
108	long[] other) {
109	ex.invoke(new PAS.FJLCombineInPlace
110	(this, origin, fence, null, other,
111	-origin, combiner));
112	return this;
113	}
114
115	/**
116	* Returns a new ParallelLongArray containing only unique
117	* elements (that is, without any duplicates).
118	* @return the new ParallelLongArray
119	*/
120	public ParallelLongArray allUniqueElements() {
121	PAS.UniquifierTable tab = new PAS.UniquifierTable
122	(fence - origin, this, false);
123	PAS.FJLUniquifier f = new PAS.FJLUniquifier
124	(this, origin, fence, null, tab);
125	ex.invoke(f);
126	long[] res = tab.uniqueLongs(f.count);
127	return new ParallelLongArray(ex, res);
128	}
129
130
131	/**
132	* Returns an operation prefix that causes a method to operate
133	* only on elements for which the current selector (if
134	* present) and the given selector returns true.
135	* @param selector the selector
136	* @return operation prefix
137	*/
138	public abstract ParallelLongArrayWithFilter withFilter(LongPredicate selector);
139
140	/**
141	* Returns an operation prefix that causes a method to operate
142	* only on elements for which the current selector (if
143	* present) and the given binary selector returns true.
144	* @param selector the selector
145	* @return operation prefix
146	*/
147	public ParallelLongArrayWithFilter withFilter
148	(BinaryLongPredicate selector,
149	ParallelLongArrayWithLongMapping other) {
150	return withIndexedFilter(AbstractParallelAnyArray.indexedSelector(selector, other, origin));
151	}
152
153	/**
154	* Returns an operation prefix that causes a method to operate
155	* only on elements for which the current selector (if
156	* present) and the given indexed selector returns true.
157	* @param selector the selector
158	* @return operation prefix
159	*/
160	public abstract ParallelLongArrayWithFilter withIndexedFilter
161	(IntAndLongPredicate selector);
162
163	/**
164	* Returns true if all elements at the same relative positions
165	* of this and other array are equal.
166	* @param other the other array
167	* @return true if equal
168	*/
169	public boolean hasAllEqualElements(ParallelLongArrayWithLongMapping other) {
170	return withFilter(CommonOps.longInequalityPredicate(),
171	other).anyIndex() < 0;
172	}
173
174	final void leafTransfer(int lo, int hi, long[] dest, int offset) {
175	final long[] a = this.array;
176	for (int i = lo; i < hi; ++i)
177	dest[offset++] = (a[i]);
178	}
179
180	final void leafTransferByIndex(int[] indices, int loIdx, int hiIdx,
181	long[] dest, int offset) {
182	final long[] a = this.array;
183	for (int i = loIdx; i < hiIdx; ++i)
184	dest[offset++] = (a[indices[i]]);
185	}
186
187	final long lget(int i) { return this.array[i]; }
188	}