89 lines
2.3 KiB
JavaScript
89 lines
2.3 KiB
JavaScript
import * as Entry from "./entry.js";
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/** @internal */
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export const JournalAnalysisInvalid = "Invalid";
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/** @internal */
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export const JournalAnalysisReadWrite = "ReadWrite";
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/** @internal */
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export const JournalAnalysisReadOnly = "ReadOnly";
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/** @internal */
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export const commitJournal = journal => {
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for (const entry of journal) {
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Entry.commit(entry[1]);
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}
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};
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/**
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* Analyzes the journal, determining whether it is valid and whether it is
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* read only in a single pass. Note that information on whether the
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* journal is read only will only be accurate if the journal is valid, due
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* to short-circuiting that occurs on an invalid journal.
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*
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* @internal
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*/
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export const analyzeJournal = journal => {
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let val = JournalAnalysisReadOnly;
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for (const [, entry] of journal) {
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val = Entry.isInvalid(entry) ? JournalAnalysisInvalid : Entry.isChanged(entry) ? JournalAnalysisReadWrite : val;
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if (val === JournalAnalysisInvalid) {
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return val;
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}
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}
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return val;
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};
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/** @internal */
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export const prepareResetJournal = journal => {
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const saved = new Map();
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for (const entry of journal) {
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saved.set(entry[0], Entry.copy(entry[1]));
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}
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return () => {
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journal.clear();
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for (const entry of saved) {
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journal.set(entry[0], entry[1]);
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}
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};
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};
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/** @internal */
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export const collectTodos = journal => {
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const allTodos = new Map();
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for (const [, entry] of journal) {
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for (const todo of entry.ref.todos) {
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allTodos.set(todo[0], todo[1]);
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}
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entry.ref.todos = new Map();
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}
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return allTodos;
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};
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/** @internal */
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export const execTodos = todos => {
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const todosSorted = Array.from(todos.entries()).sort((x, y) => x[0] - y[0]);
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for (const [_, todo] of todosSorted) {
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todo();
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}
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};
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/** @internal */
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export const addTodo = (txnId, journal, todoEffect) => {
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let added = false;
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for (const [, entry] of journal) {
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if (!entry.ref.todos.has(txnId)) {
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entry.ref.todos.set(txnId, todoEffect);
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added = true;
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}
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}
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return added;
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};
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/** @internal */
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export const isValid = journal => {
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let valid = true;
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for (const [, entry] of journal) {
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valid = Entry.isValid(entry);
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if (!valid) {
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return valid;
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}
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}
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return valid;
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};
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/** @internal */
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export const isInvalid = journal => {
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return !isValid(journal);
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};
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//# sourceMappingURL=journal.js.map
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