apache-arrow
Version:
Apache Arrow columnar in-memory format
355 lines (353 loc) • 15.3 kB
JavaScript
"use strict";
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
Object.defineProperty(exports, "__esModule", { value: true });
exports.Visitor = void 0;
const enum_js_1 = require("./enum.js");
const type_js_1 = require("./type.js");
class Visitor {
visitMany(nodes, ...args) {
return nodes.map((node, i) => this.visit(node, ...args.map((x) => x[i])));
}
visit(...args) {
return this.getVisitFn(args[0], false).apply(this, args);
}
getVisitFn(node, throwIfNotFound = true) {
return getVisitFn(this, node, throwIfNotFound);
}
getVisitFnByTypeId(typeId, throwIfNotFound = true) {
return getVisitFnByTypeId(this, typeId, throwIfNotFound);
}
visitNull(_node, ..._args) { return null; }
visitBool(_node, ..._args) { return null; }
visitInt(_node, ..._args) { return null; }
visitFloat(_node, ..._args) { return null; }
visitUtf8(_node, ..._args) { return null; }
visitLargeUtf8(_node, ..._args) { return null; }
visitBinary(_node, ..._args) { return null; }
visitLargeBinary(_node, ..._args) { return null; }
visitFixedSizeBinary(_node, ..._args) { return null; }
visitDate(_node, ..._args) { return null; }
visitTimestamp(_node, ..._args) { return null; }
visitTime(_node, ..._args) { return null; }
visitDecimal(_node, ..._args) { return null; }
visitList(_node, ..._args) { return null; }
visitStruct(_node, ..._args) { return null; }
visitUnion(_node, ..._args) { return null; }
visitDictionary(_node, ..._args) { return null; }
visitInterval(_node, ..._args) { return null; }
visitDuration(_node, ..._args) { return null; }
visitFixedSizeList(_node, ..._args) { return null; }
visitMap(_node, ..._args) { return null; }
}
exports.Visitor = Visitor;
/** @ignore */
function getVisitFn(visitor, node, throwIfNotFound = true) {
if (typeof node === 'number') {
return getVisitFnByTypeId(visitor, node, throwIfNotFound);
}
if (typeof node === 'string' && (node in enum_js_1.Type)) {
return getVisitFnByTypeId(visitor, enum_js_1.Type[node], throwIfNotFound);
}
if (node && (node instanceof type_js_1.DataType)) {
return getVisitFnByTypeId(visitor, inferDType(node), throwIfNotFound);
}
if ((node === null || node === void 0 ? void 0 : node.type) && (node.type instanceof type_js_1.DataType)) {
return getVisitFnByTypeId(visitor, inferDType(node.type), throwIfNotFound);
}
return getVisitFnByTypeId(visitor, enum_js_1.Type.NONE, throwIfNotFound);
}
/** @ignore */
function getVisitFnByTypeId(visitor, dtype, throwIfNotFound = true) {
let fn = null;
switch (dtype) {
case enum_js_1.Type.Null:
fn = visitor.visitNull;
break;
case enum_js_1.Type.Bool:
fn = visitor.visitBool;
break;
case enum_js_1.Type.Int:
fn = visitor.visitInt;
break;
case enum_js_1.Type.Int8:
fn = visitor.visitInt8 || visitor.visitInt;
break;
case enum_js_1.Type.Int16:
fn = visitor.visitInt16 || visitor.visitInt;
break;
case enum_js_1.Type.Int32:
fn = visitor.visitInt32 || visitor.visitInt;
break;
case enum_js_1.Type.Int64:
fn = visitor.visitInt64 || visitor.visitInt;
break;
case enum_js_1.Type.Uint8:
fn = visitor.visitUint8 || visitor.visitInt;
break;
case enum_js_1.Type.Uint16:
fn = visitor.visitUint16 || visitor.visitInt;
break;
case enum_js_1.Type.Uint32:
fn = visitor.visitUint32 || visitor.visitInt;
break;
case enum_js_1.Type.Uint64:
fn = visitor.visitUint64 || visitor.visitInt;
break;
case enum_js_1.Type.Float:
fn = visitor.visitFloat;
break;
case enum_js_1.Type.Float16:
fn = visitor.visitFloat16 || visitor.visitFloat;
break;
case enum_js_1.Type.Float32:
fn = visitor.visitFloat32 || visitor.visitFloat;
break;
case enum_js_1.Type.Float64:
fn = visitor.visitFloat64 || visitor.visitFloat;
break;
case enum_js_1.Type.Utf8:
fn = visitor.visitUtf8;
break;
case enum_js_1.Type.LargeUtf8:
fn = visitor.visitLargeUtf8;
break;
case enum_js_1.Type.Binary:
fn = visitor.visitBinary;
break;
case enum_js_1.Type.LargeBinary:
fn = visitor.visitLargeBinary;
break;
case enum_js_1.Type.FixedSizeBinary:
fn = visitor.visitFixedSizeBinary;
break;
case enum_js_1.Type.Date:
fn = visitor.visitDate;
break;
case enum_js_1.Type.DateDay:
fn = visitor.visitDateDay || visitor.visitDate;
break;
case enum_js_1.Type.DateMillisecond:
fn = visitor.visitDateMillisecond || visitor.visitDate;
break;
case enum_js_1.Type.Timestamp:
fn = visitor.visitTimestamp;
break;
case enum_js_1.Type.TimestampSecond:
fn = visitor.visitTimestampSecond || visitor.visitTimestamp;
break;
case enum_js_1.Type.TimestampMillisecond:
fn = visitor.visitTimestampMillisecond || visitor.visitTimestamp;
break;
case enum_js_1.Type.TimestampMicrosecond:
fn = visitor.visitTimestampMicrosecond || visitor.visitTimestamp;
break;
case enum_js_1.Type.TimestampNanosecond:
fn = visitor.visitTimestampNanosecond || visitor.visitTimestamp;
break;
case enum_js_1.Type.Time:
fn = visitor.visitTime;
break;
case enum_js_1.Type.TimeSecond:
fn = visitor.visitTimeSecond || visitor.visitTime;
break;
case enum_js_1.Type.TimeMillisecond:
fn = visitor.visitTimeMillisecond || visitor.visitTime;
break;
case enum_js_1.Type.TimeMicrosecond:
fn = visitor.visitTimeMicrosecond || visitor.visitTime;
break;
case enum_js_1.Type.TimeNanosecond:
fn = visitor.visitTimeNanosecond || visitor.visitTime;
break;
case enum_js_1.Type.Decimal:
fn = visitor.visitDecimal;
break;
case enum_js_1.Type.List:
fn = visitor.visitList;
break;
case enum_js_1.Type.Struct:
fn = visitor.visitStruct;
break;
case enum_js_1.Type.Union:
fn = visitor.visitUnion;
break;
case enum_js_1.Type.DenseUnion:
fn = visitor.visitDenseUnion || visitor.visitUnion;
break;
case enum_js_1.Type.SparseUnion:
fn = visitor.visitSparseUnion || visitor.visitUnion;
break;
case enum_js_1.Type.Dictionary:
fn = visitor.visitDictionary;
break;
case enum_js_1.Type.Interval:
fn = visitor.visitInterval;
break;
case enum_js_1.Type.IntervalDayTime:
fn = visitor.visitIntervalDayTime || visitor.visitInterval;
break;
case enum_js_1.Type.IntervalYearMonth:
fn = visitor.visitIntervalYearMonth || visitor.visitInterval;
break;
case enum_js_1.Type.Duration:
fn = visitor.visitDuration;
break;
case enum_js_1.Type.DurationSecond:
fn = visitor.visitDurationSecond || visitor.visitDuration;
break;
case enum_js_1.Type.DurationMillisecond:
fn = visitor.visitDurationMillisecond || visitor.visitDuration;
break;
case enum_js_1.Type.DurationMicrosecond:
fn = visitor.visitDurationMicrosecond || visitor.visitDuration;
break;
case enum_js_1.Type.DurationNanosecond:
fn = visitor.visitDurationNanosecond || visitor.visitDuration;
break;
case enum_js_1.Type.FixedSizeList:
fn = visitor.visitFixedSizeList;
break;
case enum_js_1.Type.Map:
fn = visitor.visitMap;
break;
}
if (typeof fn === 'function')
return fn;
if (!throwIfNotFound)
return () => null;
throw new Error(`Unrecognized type '${enum_js_1.Type[dtype]}'`);
}
/** @ignore */
function inferDType(type) {
switch (type.typeId) {
case enum_js_1.Type.Null: return enum_js_1.Type.Null;
case enum_js_1.Type.Int: {
const { bitWidth, isSigned } = type;
switch (bitWidth) {
case 8: return isSigned ? enum_js_1.Type.Int8 : enum_js_1.Type.Uint8;
case 16: return isSigned ? enum_js_1.Type.Int16 : enum_js_1.Type.Uint16;
case 32: return isSigned ? enum_js_1.Type.Int32 : enum_js_1.Type.Uint32;
case 64: return isSigned ? enum_js_1.Type.Int64 : enum_js_1.Type.Uint64;
}
// @ts-ignore
return enum_js_1.Type.Int;
}
case enum_js_1.Type.Float:
switch (type.precision) {
case enum_js_1.Precision.HALF: return enum_js_1.Type.Float16;
case enum_js_1.Precision.SINGLE: return enum_js_1.Type.Float32;
case enum_js_1.Precision.DOUBLE: return enum_js_1.Type.Float64;
}
// @ts-ignore
return enum_js_1.Type.Float;
case enum_js_1.Type.Binary: return enum_js_1.Type.Binary;
case enum_js_1.Type.LargeBinary: return enum_js_1.Type.LargeBinary;
case enum_js_1.Type.Utf8: return enum_js_1.Type.Utf8;
case enum_js_1.Type.LargeUtf8: return enum_js_1.Type.LargeUtf8;
case enum_js_1.Type.Bool: return enum_js_1.Type.Bool;
case enum_js_1.Type.Decimal: return enum_js_1.Type.Decimal;
case enum_js_1.Type.Time:
switch (type.unit) {
case enum_js_1.TimeUnit.SECOND: return enum_js_1.Type.TimeSecond;
case enum_js_1.TimeUnit.MILLISECOND: return enum_js_1.Type.TimeMillisecond;
case enum_js_1.TimeUnit.MICROSECOND: return enum_js_1.Type.TimeMicrosecond;
case enum_js_1.TimeUnit.NANOSECOND: return enum_js_1.Type.TimeNanosecond;
}
// @ts-ignore
return enum_js_1.Type.Time;
case enum_js_1.Type.Timestamp:
switch (type.unit) {
case enum_js_1.TimeUnit.SECOND: return enum_js_1.Type.TimestampSecond;
case enum_js_1.TimeUnit.MILLISECOND: return enum_js_1.Type.TimestampMillisecond;
case enum_js_1.TimeUnit.MICROSECOND: return enum_js_1.Type.TimestampMicrosecond;
case enum_js_1.TimeUnit.NANOSECOND: return enum_js_1.Type.TimestampNanosecond;
}
// @ts-ignore
return enum_js_1.Type.Timestamp;
case enum_js_1.Type.Date:
switch (type.unit) {
case enum_js_1.DateUnit.DAY: return enum_js_1.Type.DateDay;
case enum_js_1.DateUnit.MILLISECOND: return enum_js_1.Type.DateMillisecond;
}
// @ts-ignore
return enum_js_1.Type.Date;
case enum_js_1.Type.Interval:
switch (type.unit) {
case enum_js_1.IntervalUnit.DAY_TIME: return enum_js_1.Type.IntervalDayTime;
case enum_js_1.IntervalUnit.YEAR_MONTH: return enum_js_1.Type.IntervalYearMonth;
}
// @ts-ignore
return enum_js_1.Type.Interval;
case enum_js_1.Type.Duration:
switch (type.unit) {
case enum_js_1.TimeUnit.SECOND: return enum_js_1.Type.DurationSecond;
case enum_js_1.TimeUnit.MILLISECOND: return enum_js_1.Type.DurationMillisecond;
case enum_js_1.TimeUnit.MICROSECOND: return enum_js_1.Type.DurationMicrosecond;
case enum_js_1.TimeUnit.NANOSECOND: return enum_js_1.Type.DurationNanosecond;
}
// @ts-ignore
return enum_js_1.Type.Duration;
case enum_js_1.Type.Map: return enum_js_1.Type.Map;
case enum_js_1.Type.List: return enum_js_1.Type.List;
case enum_js_1.Type.Struct: return enum_js_1.Type.Struct;
case enum_js_1.Type.Union:
switch (type.mode) {
case enum_js_1.UnionMode.Dense: return enum_js_1.Type.DenseUnion;
case enum_js_1.UnionMode.Sparse: return enum_js_1.Type.SparseUnion;
}
// @ts-ignore
return enum_js_1.Type.Union;
case enum_js_1.Type.FixedSizeBinary: return enum_js_1.Type.FixedSizeBinary;
case enum_js_1.Type.FixedSizeList: return enum_js_1.Type.FixedSizeList;
case enum_js_1.Type.Dictionary: return enum_js_1.Type.Dictionary;
}
throw new Error(`Unrecognized type '${enum_js_1.Type[type.typeId]}'`);
}
// Add these here so they're picked up by the externs creator
// in the build, and closure-compiler doesn't minify them away
Visitor.prototype.visitInt8 = null;
Visitor.prototype.visitInt16 = null;
Visitor.prototype.visitInt32 = null;
Visitor.prototype.visitInt64 = null;
Visitor.prototype.visitUint8 = null;
Visitor.prototype.visitUint16 = null;
Visitor.prototype.visitUint32 = null;
Visitor.prototype.visitUint64 = null;
Visitor.prototype.visitFloat16 = null;
Visitor.prototype.visitFloat32 = null;
Visitor.prototype.visitFloat64 = null;
Visitor.prototype.visitDateDay = null;
Visitor.prototype.visitDateMillisecond = null;
Visitor.prototype.visitTimestampSecond = null;
Visitor.prototype.visitTimestampMillisecond = null;
Visitor.prototype.visitTimestampMicrosecond = null;
Visitor.prototype.visitTimestampNanosecond = null;
Visitor.prototype.visitTimeSecond = null;
Visitor.prototype.visitTimeMillisecond = null;
Visitor.prototype.visitTimeMicrosecond = null;
Visitor.prototype.visitTimeNanosecond = null;
Visitor.prototype.visitDenseUnion = null;
Visitor.prototype.visitSparseUnion = null;
Visitor.prototype.visitIntervalDayTime = null;
Visitor.prototype.visitIntervalYearMonth = null;
Visitor.prototype.visitDuration = null;
Visitor.prototype.visitDurationSecond = null;
Visitor.prototype.visitDurationMillisecond = null;
Visitor.prototype.visitDurationMicrosecond = null;
Visitor.prototype.visitDurationNanosecond = null;
//# sourceMappingURL=visitor.js.map