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See the NOTICE file\n// distributed with this work for additional information\n// regarding copyright ownership. The ASF licenses this file\n// to you under the Apache License, Version 2.0 (the\n// \"License\"); you may not use this file except in compliance\n// with the License. You may obtain a copy of the License at\n//\n// http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing,\n// software distributed under the License is distributed on an\n// \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\n// KIND, either express or implied. See the License for the\n// specific language governing permissions and limitations\n// under the License.\n\nimport { Data } from '../data';\nimport { Type } from '../enum';\nimport { Visitor } from '../visitor';\nimport { VectorType } from '../interfaces';\nimport { iterateBits } from '../util/bit';\nimport { instance as getVisitor } from './get';\nimport {\n DataType, Dictionary,\n Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,\n Float, Float16, Float32, Float64,\n Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64,\n Date_, DateDay, DateMillisecond,\n Interval, IntervalDayTime, IntervalYearMonth,\n Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,\n Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,\n Union, DenseUnion, SparseUnion,\n} from '../type';\n\n/** @ignore */\nexport interface IteratorVisitor extends Visitor {\n visit<T extends VectorType>(node: T): IterableIterator<T['TValue'] | null>;\n visitMany <T extends VectorType>(nodes: T[]): IterableIterator<T['TValue'] | null>[];\n getVisitFn<T extends Type>(node: T): (vector: VectorType<T>) => IterableIterator<VectorType<T>['TValue'] | null>;\n getVisitFn<T extends DataType>(node: VectorType<T> | Data<T> | T): (vector: VectorType<T>) => IterableIterator<VectorType<T>['TValue'] | null>;\n visitNull <T extends Null> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitBool <T extends Bool> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitInt <T extends Int> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitInt8 <T extends Int8> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitInt16 <T extends Int16> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitInt32 <T extends Int32> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitInt64 <T extends Int64> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitUint8 <T extends Uint8> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitUint16 <T extends Uint16> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitUint32 <T extends Uint32> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitUint64 <T extends Uint64> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitFloat <T extends Float> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitFloat16 <T extends Float16> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitFloat32 <T extends Float32> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitFloat64 <T extends Float64> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitUtf8 <T extends Utf8> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitBinary <T extends Binary> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitFixedSizeBinary <T extends FixedSizeBinary> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitDate <T extends Date_> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitDateDay <T extends DateDay> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitDateMillisecond <T extends DateMillisecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimestamp <T extends Timestamp> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimestampSecond <T extends TimestampSecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimestampMillisecond <T extends TimestampMillisecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimestampMicrosecond <T extends TimestampMicrosecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimestampNanosecond <T extends TimestampNanosecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTime <T extends Time> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimeSecond <T extends TimeSecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimeMillisecond <T extends TimeMillisecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimeMicrosecond <T extends TimeMicrosecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitTimeNanosecond <T extends TimeNanosecond> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitDecimal <T extends Decimal> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitList <T extends List> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitStruct <T extends Struct> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitUnion <T extends Union> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitDenseUnion <T extends DenseUnion> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitSparseUnion <T extends SparseUnion> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitDictionary <T extends Dictionary> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitInterval <T extends Interval> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitIntervalDayTime <T extends IntervalDayTime> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitIntervalYearMonth <T extends IntervalYearMonth> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitFixedSizeList <T extends FixedSizeList> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n visitMap <T extends Map_> (vector: VectorType<T>): IterableIterator<T['TValue'] | null>;\n}\n\n/** @ignore */\nexport class IteratorVisitor extends Visitor {}\n\n/** @ignore */\nfunction nullableIterator<T extends DataType>(vector: VectorType<T>): IterableIterator<T['TValue'] | null> {\n const getFn = getVisitor.getVisitFn(vector);\n return iterateBits<T['TValue'] | null>(\n vector.nullBitmap, vector.offset, vector.length, vector,\n (vec: VectorType<T>, idx: number, nullByte: number, nullBit: number) =>\n ((nullByte & 1 << nullBit) !== 0) ? getFn(vec, idx) : null\n );\n}\n\n/** @ignore */\nfunction vectorIterator<T extends DataType>(vector: VectorType<T>): IterableIterator<T['TValue'] | null> {\n\n // If nullable, iterate manually\n if (vector.nullCount > 0) {\n return nullableIterator<T>(vector);\n }\n\n const { type, typeId, length } = vector;\n\n // Fast case, defer to native iterators if possible\n if (vector.stride === 1 && (\n (typeId === Type.Timestamp) ||\n (typeId === Type.Int && (type as Int).bitWidth !== 64) ||\n (typeId === Type.Time && (type as Time).bitWidth !== 64) ||\n (typeId === Type.Float && (type as Float).precision > 0 /* Precision.HALF */)\n )) {\n return vector.values.subarray(0, length)[Symbol.iterator]();\n }\n\n // Otherwise, iterate manually\n return (function* (getFn) {\n for (let index = -1; ++index < length;) {\n yield getFn(vector, index);\n }\n })(getVisitor.getVisitFn(vector));\n}\n\nIteratorVisitor.prototype.visitNull = vectorIterator;\nIteratorVisitor.prototype.visitBool = vectorIterator;\nIteratorVisitor.prototype.visitInt = vectorIterator;\nIteratorVisitor.prototype.visitInt8 = vectorIterator;\nIteratorVisitor.prototype.visitInt16 = vectorIterator;\nIteratorVisitor.prototype.visitInt32 = vectorIterator;\nIteratorVisitor.prototype.visitInt64 = vectorIterator;\nIteratorVisitor.prototype.visitUint8 = vectorIterator;\nIteratorVisitor.prototype.visitUint16 = vectorIterator;\nIteratorVisitor.prototype.visitUint32 = vectorIterator;\nIteratorVisitor.prototype.visitUint64 = vectorIterator;\nIteratorVisitor.prototype.visitFloat = vectorIterator;\nIteratorVisitor.prototype.visitFloat16 = vectorIterator;\nIteratorVisitor.prototype.visitFloat32 = vectorIterator;\nIteratorVisitor.prototype.visitFloat64 = vectorIterator;\nIteratorVisitor.prototype.visitUtf8 = vectorIterator;\nIteratorVisitor.prototype.visitBinary = vectorIterator;\nIteratorVisitor.prototype.visitFixedSizeBinary = vectorIterator;\nIteratorVisitor.prototype.visitDate = vectorIterator;\nIteratorVisitor.prototype.visitDateDay = vectorIterator;\nIteratorVisitor.prototype.visitDateMillisecond = vectorIterator;\nIteratorVisitor.prototype.visitTimestamp = vectorIterator;\nIteratorVisitor.prototype.visitTimestampSecond = vectorIterator;\nIteratorVisitor.prototype.visitTimestampMillisecond = vectorIterator;\nIteratorVisitor.prototype.visitTimestampMicrosecond = vectorIterator;\nIteratorVisitor.prototype.visitTimestampNanosecond = vectorIterator;\nIteratorVisitor.prototype.visitTime = vectorIterator;\nIteratorVisitor.prototype.visitTimeSecond = vectorIterator;\nIteratorVisitor.prototype.visitTimeMillisecond = vectorIterator;\nIteratorVisitor.prototype.visitTimeMicrosecond = vectorIterator;\nIteratorVisitor.prototype.visitTimeNanosecond = vectorIterator;\nIteratorVisitor.prototype.visitDecimal = vectorIterator;\nIteratorVisitor.prototype.visitList = vectorIterator;\nIteratorVisitor.prototype.visitStruct = vectorIterator;\nIteratorVisitor.prototype.visitUnion = vectorIterator;\nIteratorVisitor.prototype.visitDenseUnion = vectorIterator;\nIteratorVisitor.prototype.visitSparseUnion = vectorIterator;\nIteratorVisitor.prototype.visitDictionary = vectorIterator;\nIteratorVisitor.prototype.visitInterval = vectorIterator;\nIteratorVisitor.prototype.visitIntervalDayTime = vectorIterator;\nIteratorVisitor.prototype.visitIntervalYearMonth = vectorIterator;\nIteratorVisitor.prototype.visitFixedSizeList = vectorIterator;\nIteratorVisitor.prototype.visitMap = vectorIterator;\n\n/** @ignore */\nexport const instance = new IteratorVisitor();\n"]} |