59 lines
1.2 KiB
JavaScript
59 lines
1.2 KiB
JavaScript
/**
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* @module utils
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*/
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import * as ID from '../utils/ID.js'
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/**
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* @typedef {Map<number, number>} StateSet
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*/
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/**
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* @private
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*/
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export class StateStore {
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constructor (y) {
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this.y = y
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this.state = new Map()
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}
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logTable () {
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const entries = []
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for (let [user, state] of this.state) {
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entries.push({
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user, state
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})
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}
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console.table(entries)
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}
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getNextID (len) {
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const user = this.y.userID
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const state = this.getState(user)
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this.setState(user, state + len)
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return ID.createID(user, state)
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}
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updateRemoteState (struct) {
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let user = struct._id.user
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let userState = this.state.get(user)
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while (struct !== null && struct._id.clock === userState) {
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userState += struct._length
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struct = this.y.os.get(ID.createID(user, userState))
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}
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this.state.set(user, userState)
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}
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getState (user) {
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let state = this.state.get(user)
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if (state == null) {
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return 0
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}
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return state
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}
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setState (user, state) {
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// TODO: modify missingi structs here
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const beforeState = this.y._transaction.beforeState
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if (!beforeState.has(user)) {
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beforeState.set(user, this.getState(user))
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}
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this.state.set(user, state)
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}
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}
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