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.*;
import java.lang.reflect.Array;


/**
 * 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:	1.8
Committed:	Sun Jan 18 20:17:32 2015 UTC (9 years, 3 months ago) by jsr166
Branch:	MAIN
Changes since 1.7:	+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	/**
17	* A prefix view of ParallelLongArray that causes operations to apply
18	* only to elements for which a selector returns true. Instances of
19	* this class may be constructed only via prefix methods of
20	* ParallelLongArray or its other prefix classes.
21	*/
22	public abstract class ParallelLongArrayWithFilter extends ParallelLongArrayWithLongMapping {
23	ParallelLongArrayWithFilter
24	(ForkJoinPool ex, int origin, int fence, long[] array) {
25	super(ex, origin, fence, array);
26	}
27
28	/**
29	* Replaces elements with the results of applying the given
30	* op to their current values.
31	* @param op the op
32	* @return this (to simplify use in expressions)
33	*/
34	public ParallelLongArrayWithFilter replaceWithMapping(LongOp op) {
35	ex.invoke(new PAS.FJLTransform
36	(this, origin, fence, null, op));
37	return this;
38	}
39
40	/**
41	* Replaces elements with the results of applying the given
42	* op to their indices.
43	* @param op the op
44	* @return this (to simplify use in expressions)
45	*/
46	public ParallelLongArrayWithFilter replaceWithMappedIndex(IntToLong op) {
47	ex.invoke(new PAS.FJLIndexMap
48	(this, origin, fence, null, op));
49	return this;
50	}
51
52	/**
53	* Replaces elements with the results of applying the given
54	* mapping to each index and current element value.
55	* @param op the op
56	* @return this (to simplify use in expressions)
57	*/
58	public ParallelLongArrayWithFilter replaceWithMappedIndex(IntAndLongToLong op) {
59	ex.invoke(new PAS.FJLBinaryIndexMap
60	(this, origin, fence, null, op));
61	return this;
62	}
63
64	/**
65	* Replaces elements with results of applying the given
66	* generator.
67	* @param generator the generator
68	* @return this (to simplify use in expressions)
69	*/
70	public ParallelLongArrayWithFilter replaceWithGeneratedValue(LongGenerator generator) {
71	ex.invoke(new PAS.FJLGenerate
72	(this, origin, fence, null, generator));
73	return this;
74	}
75
76	/**
77	* Replaces elements with the given value.
78	* @param value the value
79	* @return this (to simplify use in expressions)
80	*/
81	public ParallelLongArrayWithFilter replaceWithValue(long value) {
82	ex.invoke(new PAS.FJLFill
83	(this, origin, fence, null, value));
84	return this;
85	}
86
87	/**
88	* Replaces elements with results of applying
89	* {@code op(thisElement, otherElement)}.
90	* @param other the other array
91	* @param combiner the combiner
92	* @return this (to simplify use in expressions)
93	*/
94	public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner,
95	ParallelLongArrayWithLongMapping other) {
96	ex.invoke(new PAS.FJLPACombineInPlace
97	(this, origin, fence, null,
98	other, other.origin - origin, combiner));
99	return this;
100	}
101
102	/**
103	* Replaces elements with results of applying
104	* {@code op(thisElement, otherElement)}.
105	* @param other the other array
106	* @param combiner the combiner
107	* @return this (to simplify use in expressions)
108	*/
109	public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner,
110	long[] other) {
111	ex.invoke(new PAS.FJLCombineInPlace
112	(this, origin, fence, null, other,
113	-origin, combiner));
114	return this;
115	}
116
117	/**
118	* Returns a new ParallelLongArray containing only unique
119	* elements (that is, without any duplicates).
120	* @return the new ParallelLongArray
121	*/
122	public ParallelLongArray allUniqueElements() {
123	PAS.UniquifierTable tab = new PAS.UniquifierTable
124	(fence - origin, this, false);
125	PAS.FJLUniquifier f = new PAS.FJLUniquifier
126	(this, origin, fence, null, tab);
127	ex.invoke(f);
128	long[] res = tab.uniqueLongs(f.count);
129	return new ParallelLongArray(ex, res);
130	}
131
132
133	/**
134	* Returns an operation prefix that causes a method to operate
135	* only on elements for which the current selector (if
136	* present) and the given selector returns true.
137	* @param selector the selector
138	* @return operation prefix
139	*/
140	public abstract ParallelLongArrayWithFilter withFilter(LongPredicate selector);
141
142	/**
143	* Returns an operation prefix that causes a method to operate
144	* only on elements for which the current selector (if
145	* present) and the given binary selector returns true.
146	* @param selector the selector
147	* @return operation prefix
148	*/
149	public ParallelLongArrayWithFilter withFilter
150	(BinaryLongPredicate selector,
151	ParallelLongArrayWithLongMapping other) {
152	return withIndexedFilter(AbstractParallelAnyArray.indexedSelector(selector, other, origin));
153	}
154
155	/**
156	* Returns an operation prefix that causes a method to operate
157	* only on elements for which the current selector (if
158	* present) and the given indexed selector returns true.
159	* @param selector the selector
160	* @return operation prefix
161	*/
162	public abstract ParallelLongArrayWithFilter withIndexedFilter
163	(IntAndLongPredicate selector);
164
165	/**
166	* Returns true if all elements at the same relative positions
167	* of this and other array are equal.
168	* @param other the other array
169	* @return true if equal
170	*/
171	public boolean hasAllEqualElements(ParallelLongArrayWithLongMapping other) {
172	return withFilter(CommonOps.longInequalityPredicate(),
173	other).anyIndex() < 0;
174	}
175
176	final void leafTransfer(int lo, int hi, long[] dest, int offset) {
177	final long[] a = this.array;
178	for (int i = lo; i < hi; ++i)
179	dest[offset++] = (a[i]);
180	}
181
182	final void leafTransferByIndex(int[] indices, int loIdx, int hiIdx,
183	long[] dest, int offset) {
184	final long[] a = this.array;
185	for (int i = loIdx; i < hiIdx; ++i)
186	dest[offset++] = (a[indices[i]]);
187	}
188
189	final long lget(int i) { return this.array[i]; }
190	}