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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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*/ |
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package extra166y; |
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import jsr166y.*; |
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import static extra166y.Ops.*; |
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import java.util.*; |
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import java.util.concurrent.atomic.*; |
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import java.lang.reflect.Array; |
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/** |
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* A prefix view of ParallelLongArray that causes operations to apply |
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* only to elements for which a selector returns true. Instances of |
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* this class may be constructed only via prefix methods of |
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* ParallelLongArray or its other prefix classes. |
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*/ |
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public abstract class ParallelLongArrayWithFilter extends ParallelLongArrayWithLongMapping { |
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ParallelLongArrayWithFilter |
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(ForkJoinPool ex, int origin, int fence, long[] array) { |
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super(ex, origin, fence, array); |
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} |
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/** |
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* Replaces elements with the results of applying the given |
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* op to their current values. |
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* @param op the op |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithMapping(LongOp op) { |
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ex.invoke(new PAS.FJLTransform |
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(this, origin, fence, null, op)); |
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return this; |
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} |
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/** |
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* Replaces elements with the results of applying the given |
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* op to their indices |
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* @param op the op |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithMappedIndex(IntToLong op) { |
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ex.invoke(new PAS.FJLIndexMap |
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(this, origin, fence, null, op)); |
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return this; |
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} |
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/** |
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* Replaces elements with the results of applying the given |
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* mapping to each index and current element value |
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* @param op the op |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithMappedIndex(IntAndLongToLong op) { |
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ex.invoke(new PAS.FJLBinaryIndexMap |
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(this, origin, fence, null, op)); |
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return this; |
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} |
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/** |
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* Replaces elements with results of applying the given |
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* generator. |
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* @param generator the generator |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithGeneratedValue(LongGenerator generator) { |
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ex.invoke(new PAS.FJLGenerate |
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(this, origin, fence, null, generator)); |
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return this; |
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} |
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/** |
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* Replaces elements with the given value. |
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* @param value the value |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithValue(long value) { |
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ex.invoke(new PAS.FJLFill |
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(this, origin, fence, null, value)); |
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return this; |
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} |
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/** |
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* Replaces elements with results of applying |
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* <tt>op(thisElement, otherElement)</tt> |
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* @param other the other array |
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* @param combiner the combiner |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner, |
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ParallelLongArrayWithLongMapping other) { |
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ex.invoke(new PAS.FJLPACombineInPlace |
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(this, origin, fence, null, |
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other, other.origin - origin, combiner)); |
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return this; |
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} |
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/** |
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* Replaces elements with results of applying |
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* <tt>op(thisElement, otherElement)</tt> |
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* @param other the other array |
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* @param combiner the combiner |
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* @return this (to simplify use in expressions) |
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*/ |
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public ParallelLongArrayWithFilter replaceWithMapping(BinaryLongOp combiner, |
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long[] other) { |
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ex.invoke(new PAS.FJLCombineInPlace |
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(this, origin, fence, null, other, |
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-origin, combiner)); |
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return this; |
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} |
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/** |
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* Returns a new ParallelLongArray containing only unique |
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* elements (that is, without any duplicates). |
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* @return the new ParallelLongArray |
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*/ |
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public ParallelLongArray allUniqueElements() { |
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PAS.UniquifierTable tab = new PAS.UniquifierTable |
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(fence - origin, this, false); |
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PAS.FJLUniquifier f = new PAS.FJLUniquifier |
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(this, origin, fence, null, tab); |
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ex.invoke(f); |
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long[] res = tab.uniqueLongs(f.count); |
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return new ParallelLongArray(ex, res); |
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} |
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/** |
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* Returns an operation prefix that causes a method to operate |
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* only on elements for which the current selector (if |
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* present) and the given selector returns true |
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* @param selector the selector |
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* @return operation prefix |
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*/ |
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public abstract ParallelLongArrayWithFilter withFilter(LongPredicate selector); |
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/** |
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* Returns an operation prefix that causes a method to operate |
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* only on elements for which the current selector (if |
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* present) and the given binary selector returns true |
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* @param selector the selector |
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* @return operation prefix |
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*/ |
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public ParallelLongArrayWithFilter withFilter |
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(BinaryLongPredicate selector, |
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ParallelLongArrayWithLongMapping other) { |
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return withIndexedFilter(AbstractParallelAnyArray.indexedSelector(selector, other, origin)); |
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} |
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/** |
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* Returns an operation prefix that causes a method to operate |
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* only on elements for which the current selector (if |
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* present) and the given indexed selector returns true |
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* @param selector the selector |
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* @return operation prefix |
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*/ |
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public abstract ParallelLongArrayWithFilter withIndexedFilter |
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(IntAndLongPredicate selector); |
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/** |
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* Returns true if all elements at the same relative positions |
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* of this and other array are equal. |
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* @param other the other array |
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* @return true if equal |
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*/ |
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public boolean hasAllEqualElements(ParallelLongArrayWithLongMapping other) { |
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return withFilter(CommonOps.longInequalityPredicate(), |
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other).anyIndex() < 0; |
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} |
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final void leafTransfer(int lo, int hi, long[] dest, int offset) { |
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final long[] a = this.array; |
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for (int i = lo; i < hi; ++i) |
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dest[offset++] = (a[i]); |
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} |
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final void leafTransferByIndex(int[] indices, int loIdx, int hiIdx, |
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long[] dest, int offset) { |
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final long[] a = this.array; |
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for (int i = loIdx; i < hiIdx; ++i) |
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dest[offset++] = (a[indices[i]]); |
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} |
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final long lget(int i) { return this.array[i]; } |
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} |