src/extra166y/ParallelDoubleArrayWithFilter.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 ParallelDoubleArray 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 ParallelDoubleArray or its other prefix classes.
 */
public abstract class ParallelDoubleArrayWithFilter extends ParallelDoubleArrayWithDoubleMapping {
    ParallelDoubleArrayWithFilter
        (ForkJoinPool ex, int origin, int fence, double[] 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 ParallelDoubleArrayWithFilter replaceWithMapping(DoubleOp op) {
        ex.invoke(new PAS.FJDTransform(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 ParallelDoubleArrayWithFilter replaceWithMappedIndex(IntToDouble op) {
        ex.invoke(new PAS.FJDIndexMap(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 ParallelDoubleArrayWithFilter replaceWithMappedIndex(IntAndDoubleToDouble op) {
        ex.invoke(new PAS.FJDBinaryIndexMap
                  (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 ParallelDoubleArrayWithFilter replaceWithGeneratedValue(DoubleGenerator generator) {
        ex.invoke(new PAS.FJDGenerate
                  (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 ParallelDoubleArrayWithFilter replaceWithValue(double value) {
        ex.invoke(new PAS.FJDFill(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 ParallelDoubleArrayWithFilter replaceWithMapping(BinaryDoubleOp combiner,
                                   ParallelDoubleArrayWithDoubleMapping other) {
        ex.invoke(new PAS.FJDPACombineInPlace
                  (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 ParallelDoubleArrayWithFilter replaceWithMapping
        (BinaryDoubleOp combiner,
         double[] other) {
        ex.invoke(new PAS.FJDCombineInPlace
                  (this, origin, fence, null, other,
                   -origin, combiner));
        return this;
    }

    /**
     * Returns a new ParallelDoubleArray containing only unique
     * elements (that is, without any duplicates).
     * @return the new ParallelDoubleArray
     */
    public ParallelDoubleArray allUniqueElements() {
        PAS.UniquifierTable tab = new PAS.UniquifierTable
            (fence - origin, this, false);
        PAS.FJDUniquifier f = new PAS.FJDUniquifier
            (this, origin, fence, null, tab);
        ex.invoke(f);
        double[] res = tab.uniqueDoubles(f.count);
        return new ParallelDoubleArray(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 ParallelDoubleArrayWithFilter withFilter
        (DoublePredicate 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 ParallelDoubleArrayWithFilter withFilter
        (BinaryDoublePredicate selector,
         ParallelDoubleArrayWithDoubleMapping 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 ParallelDoubleArrayWithFilter withIndexedFilter
        (IntAndDoublePredicate 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
        (ParallelDoubleArrayWithDoubleMapping other) {
        return withFilter(CommonOps.doubleInequalityPredicate(),
                          other).anyIndex() < 0;
    }

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

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

    final double dget(int i) { return this.array[i]; }

}
Revision:	1.8
Committed:	Thu Feb 26 06:53:34 2015 UTC (9 years, 2 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.7:	+0 -1 lines
Log Message:	delete unused imports
#	User	Rev	Content
1	dl	1.1	/*
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	jsr166	1.2	* http://creativecommons.org/publicdomain/zero/1.0/
5	dl	1.1	*/
6
7			package extra166y;
8	jsr166	1.7
9	dl	1.1	import jsr166y.*;
10			import static extra166y.Ops.*;
11			import java.util.*;
12			import java.util.concurrent.atomic.*;
13
14			/**
15			* A prefix view of ParallelDoubleArray that causes operations to apply
16			* only to elements for which a selector returns true.
17			* Instances of this class may be constructed only via prefix
18			* methods of ParallelDoubleArray or its other prefix classes.
19			*/
20			public abstract class ParallelDoubleArrayWithFilter extends ParallelDoubleArrayWithDoubleMapping {
21			ParallelDoubleArrayWithFilter
22			(ForkJoinPool ex, int origin, int fence, double[] 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	jsr166	1.3	public ParallelDoubleArrayWithFilter replaceWithMapping(DoubleOp op) {
33	dl	1.1	ex.invoke(new PAS.FJDTransform(this, origin,
34			fence, null, op));
35			return this;
36			}
37
38			/**
39			* Replaces elements with the results of applying the given
40	jsr166	1.5	* op to their indices.
41	dl	1.1	* @param op the op
42			* @return this (to simplify use in expressions)
43			*/
44			public ParallelDoubleArrayWithFilter replaceWithMappedIndex(IntToDouble op) {
45			ex.invoke(new PAS.FJDIndexMap(this, origin, fence,
46			null, op));
47			return this;
48			}
49
50			/**
51			* Replaces elements with the results of applying the given
52	jsr166	1.5	* mapping to each index and current element value.
53	dl	1.1	* @param op the op
54			* @return this (to simplify use in expressions)
55			*/
56			public ParallelDoubleArrayWithFilter replaceWithMappedIndex(IntAndDoubleToDouble op) {
57			ex.invoke(new PAS.FJDBinaryIndexMap
58			(this, origin, fence, null, op));
59			return this;
60			}
61
62			/**
63	jsr166	1.5	* Replaces elements with results of applying the given generator.
64	dl	1.1	* @param generator the generator
65			* @return this (to simplify use in expressions)
66			*/
67			public ParallelDoubleArrayWithFilter replaceWithGeneratedValue(DoubleGenerator generator) {
68			ex.invoke(new PAS.FJDGenerate
69			(this, origin, fence, null, generator));
70			return this;
71			}
72
73			/**
74			* Replaces elements with the given value.
75			* @param value the value
76			* @return this (to simplify use in expressions)
77			*/
78			public ParallelDoubleArrayWithFilter replaceWithValue(double value) {
79			ex.invoke(new PAS.FJDFill(this, origin, fence,
80			null, value));
81			return this;
82			}
83
84			/**
85			* Replaces elements with results of applying
86	jsr166	1.6	* {@code op(thisElement, otherElement)}.
87	dl	1.1	* @param other the other array
88			* @param combiner the combiner
89			* @return this (to simplify use in expressions)
90			*/
91			public ParallelDoubleArrayWithFilter replaceWithMapping(BinaryDoubleOp combiner,
92			ParallelDoubleArrayWithDoubleMapping other) {
93			ex.invoke(new PAS.FJDPACombineInPlace
94			(this, origin, fence, null,
95			other, other.origin - origin, combiner));
96			return this;
97			}
98
99			/**
100			* Replaces elements with results of applying
101	jsr166	1.6	* {@code op(thisElement, otherElement)}.
102	dl	1.1	* @param other the other array
103			* @param combiner the combiner
104			* @return this (to simplify use in expressions)
105			*/
106			public ParallelDoubleArrayWithFilter replaceWithMapping
107			(BinaryDoubleOp combiner,
108			double[] other) {
109			ex.invoke(new PAS.FJDCombineInPlace
110			(this, origin, fence, null, other,
111			-origin, combiner));
112			return this;
113			}
114
115			/**
116			* Returns a new ParallelDoubleArray containing only unique
117			* elements (that is, without any duplicates).
118			* @return the new ParallelDoubleArray
119			*/
120			public ParallelDoubleArray allUniqueElements() {
121			PAS.UniquifierTable tab = new PAS.UniquifierTable
122			(fence - origin, this, false);
123			PAS.FJDUniquifier f = new PAS.FJDUniquifier
124			(this, origin, fence, null, tab);
125			ex.invoke(f);
126			double[] res = tab.uniqueDoubles(f.count);
127			return new ParallelDoubleArray(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	jsr166	1.5	* present) and the given selector returns true.
135	dl	1.1	* @param selector the selector
136			* @return operation prefix
137			*/
138			public abstract ParallelDoubleArrayWithFilter withFilter
139			(DoublePredicate selector);
140
141			/**
142			* Returns an operation prefix that causes a method to operate
143			* only on elements for which the current selector (if
144	jsr166	1.5	* present) and the given binary selector returns true.
145	dl	1.1	* @param selector the selector
146			* @return operation prefix
147			*/
148			public ParallelDoubleArrayWithFilter withFilter
149			(BinaryDoublePredicate selector,
150			ParallelDoubleArrayWithDoubleMapping other) {
151			return withIndexedFilter(AbstractParallelAnyArray.indexedSelector(selector, other, origin));
152			}
153
154			/**
155			* Returns an operation prefix that causes a method to operate
156			* only on elements for which the current selector (if
157	jsr166	1.5	* present) and the given indexed selector returns true.
158	dl	1.1	* @param selector the selector
159			* @return operation prefix
160			*/
161			public abstract ParallelDoubleArrayWithFilter withIndexedFilter
162			(IntAndDoublePredicate selector);
163
164			/**
165			* Returns true if all elements at the same relative positions
166			* of this and other array are equal.
167			* @param other the other array
168			* @return true if equal
169			*/
170			public boolean hasAllEqualElements
171			(ParallelDoubleArrayWithDoubleMapping other) {
172			return withFilter(CommonOps.doubleInequalityPredicate(),
173			other).anyIndex() < 0;
174			}
175
176			final void leafTransfer(int lo, int hi, double[] dest, int offset) {
177			final double[] 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			double[] dest, int offset) {
184			final double[] a = this.array;
185			for (int i = loIdx; i < hiIdx; ++i)
186			dest[offset++] = (a[indices[i]]);
187			}
188
189			final double dget(int i) { return this.array[i]; }
190
191			}