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https://github.com/Ylianst/MeshCommander
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Fixed -kvmdatatrace issue.
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Ylian Saint-Hilaire
249
pki.js/Accuracy.js
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249
pki.js/Accuracy.js
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@@ -0,0 +1,249 @@
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import * as asn1js from "asn1js";
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import { getParametersValue, clearProps } from "pvutils";
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//**************************************************************************************
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/**
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* Class from RFC3161. Accuracy represents the time deviation around the UTC time contained in GeneralizedTime.
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*/
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export default class Accuracy
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{
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//**********************************************************************************
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/**
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* Constructor for Accuracy class
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* @param {Object} [parameters={}]
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* @param {Object} [parameters.schema] asn1js parsed value to initialize the class from
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*/
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constructor(parameters = {})
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{
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//region Internal properties of the object
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if("seconds" in parameters)
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/**
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* @type {number}
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* @desc seconds
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*/
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this.seconds = getParametersValue(parameters, "seconds", Accuracy.defaultValues("seconds"));
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if("millis" in parameters)
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/**
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* @type {number}
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* @desc millis
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*/
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this.millis = getParametersValue(parameters, "millis", Accuracy.defaultValues("millis"));
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if("micros" in parameters)
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/**
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* @type {number}
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* @desc micros
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*/
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this.micros = getParametersValue(parameters, "micros", Accuracy.defaultValues("micros"));
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//endregion
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//region If input argument array contains "schema" for this object
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if("schema" in parameters)
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this.fromSchema(parameters.schema);
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//endregion
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}
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//**********************************************************************************
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/**
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* Return default values for all class members
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* @param {string} memberName String name for a class member
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*/
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static defaultValues(memberName)
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{
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switch(memberName)
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{
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case "seconds":
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case "millis":
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case "micros":
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return 0;
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default:
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throw new Error(`Invalid member name for Accuracy class: ${memberName}`);
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}
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}
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//**********************************************************************************
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/**
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* Compare values with default values for all class members
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* @param {string} memberName String name for a class member
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* @param {*} memberValue Value to compare with default value
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*/
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static compareWithDefault(memberName, memberValue)
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{
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switch(memberName)
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{
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case "seconds":
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case "millis":
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case "micros":
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return (memberValue === Accuracy.defaultValues(memberName));
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default:
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throw new Error(`Invalid member name for Accuracy class: ${memberName}`);
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}
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}
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//**********************************************************************************
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/**
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* Return value of pre-defined ASN.1 schema for current class
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*
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* ASN.1 schema:
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* ```asn1
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* Accuracy ::= SEQUENCE {
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* seconds INTEGER OPTIONAL,
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* millis [0] INTEGER (1..999) OPTIONAL,
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* micros [1] INTEGER (1..999) OPTIONAL }
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* ```
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*
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* @param {Object} parameters Input parameters for the schema
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* @returns {Object} asn1js schema object
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*/
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static schema(parameters = {})
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{
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/**
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* @type {Object}
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* @property {string} [blockName]
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* @property {string} [seconds]
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* @property {string} [millis]
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* @property {string} [micros]
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*/
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const names = getParametersValue(parameters, "names", {});
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return (new asn1js.Sequence({
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name: (names.blockName || ""),
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optional: true,
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value: [
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new asn1js.Integer({
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optional: true,
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name: (names.seconds || "")
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}),
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new asn1js.Primitive({
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name: (names.millis || ""),
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optional: true,
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 0 // [0]
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}
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}),
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new asn1js.Primitive({
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name: (names.micros || ""),
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optional: true,
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 1 // [1]
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}
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})
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]
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}));
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}
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//**********************************************************************************
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/**
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* Convert parsed asn1js object into current class
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* @param {!Object} schema
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*/
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fromSchema(schema)
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{
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//region Clear input data first
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clearProps(schema, [
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"seconds",
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"millis",
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"micros"
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]);
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//endregion
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//region Check the schema is valid
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const asn1 = asn1js.compareSchema(schema,
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schema,
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Accuracy.schema({
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names: {
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seconds: "seconds",
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millis: "millis",
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micros: "micros"
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}
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})
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);
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if(asn1.verified === false)
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throw new Error("Object's schema was not verified against input data for Accuracy");
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//endregion
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//region Get internal properties from parsed schema
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if("seconds" in asn1.result)
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this.seconds = asn1.result.seconds.valueBlock.valueDec;
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if("millis" in asn1.result)
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{
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const intMillis = new asn1js.Integer({ valueHex: asn1.result.millis.valueBlock.valueHex });
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this.millis = intMillis.valueBlock.valueDec;
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}
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if("micros" in asn1.result)
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{
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const intMicros = new asn1js.Integer({ valueHex: asn1.result.micros.valueBlock.valueHex });
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this.micros = intMicros.valueBlock.valueDec;
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}
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//endregion
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}
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//**********************************************************************************
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/**
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* Convert current object to asn1js object and set correct values
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* @returns {Object} asn1js object
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*/
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toSchema()
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{
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//region Create array of output sequence
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const outputArray = [];
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if("seconds" in this)
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outputArray.push(new asn1js.Integer({ value: this.seconds }));
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if("millis" in this)
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{
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const intMillis = new asn1js.Integer({ value: this.millis });
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outputArray.push(new asn1js.Primitive({
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 0 // [0]
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},
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valueHex: intMillis.valueBlock.valueHex
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}));
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}
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if("micros" in this)
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{
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const intMicros = new asn1js.Integer({ value: this.micros });
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outputArray.push(new asn1js.Primitive({
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 1 // [1]
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},
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valueHex: intMicros.valueBlock.valueHex
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}));
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}
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//endregion
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//region Construct and return new ASN.1 schema for this object
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return (new asn1js.Sequence({
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value: outputArray
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}));
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//endregion
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}
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//**********************************************************************************
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/**
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* Convertion for the class to JSON object
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* @returns {Object}
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*/
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toJSON()
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{
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const _object = {};
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if("seconds" in this)
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_object.seconds = this.seconds;
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if("millis" in this)
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_object.millis = this.millis;
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if("micros" in this)
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_object.micros = this.micros;
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return _object;
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}
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//**********************************************************************************
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}
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//**************************************************************************************
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