Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
package.lib.config.caching.js Maven / Gradle / Ivy
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.assertSimpleType = assertSimpleType;
exports.makeStrongCache = makeStrongCache;
exports.makeStrongCacheSync = makeStrongCacheSync;
exports.makeWeakCache = makeWeakCache;
exports.makeWeakCacheSync = makeWeakCacheSync;
function _gensync() {
const data = require("gensync");
_gensync = function () {
return data;
};
return data;
}
var _async = require("../gensync-utils/async.js");
var _util = require("./util.js");
const synchronize = gen => {
return _gensync()(gen).sync;
};
function* genTrue() {
return true;
}
function makeWeakCache(handler) {
return makeCachedFunction(WeakMap, handler);
}
function makeWeakCacheSync(handler) {
return synchronize(makeWeakCache(handler));
}
function makeStrongCache(handler) {
return makeCachedFunction(Map, handler);
}
function makeStrongCacheSync(handler) {
return synchronize(makeStrongCache(handler));
}
function makeCachedFunction(CallCache, handler) {
const callCacheSync = new CallCache();
const callCacheAsync = new CallCache();
const futureCache = new CallCache();
return function* cachedFunction(arg, data) {
const asyncContext = yield* (0, _async.isAsync)();
const callCache = asyncContext ? callCacheAsync : callCacheSync;
const cached = yield* getCachedValueOrWait(asyncContext, callCache, futureCache, arg, data);
if (cached.valid) return cached.value;
const cache = new CacheConfigurator(data);
const handlerResult = handler(arg, cache);
let finishLock;
let value;
if ((0, _util.isIterableIterator)(handlerResult)) {
value = yield* (0, _async.onFirstPause)(handlerResult, () => {
finishLock = setupAsyncLocks(cache, futureCache, arg);
});
} else {
value = handlerResult;
}
updateFunctionCache(callCache, cache, arg, value);
if (finishLock) {
futureCache.delete(arg);
finishLock.release(value);
}
return value;
};
}
function* getCachedValue(cache, arg, data) {
const cachedValue = cache.get(arg);
if (cachedValue) {
for (const {
value,
valid
} of cachedValue) {
if (yield* valid(data)) return {
valid: true,
value
};
}
}
return {
valid: false,
value: null
};
}
function* getCachedValueOrWait(asyncContext, callCache, futureCache, arg, data) {
const cached = yield* getCachedValue(callCache, arg, data);
if (cached.valid) {
return cached;
}
if (asyncContext) {
const cached = yield* getCachedValue(futureCache, arg, data);
if (cached.valid) {
const value = yield* (0, _async.waitFor)(cached.value.promise);
return {
valid: true,
value
};
}
}
return {
valid: false,
value: null
};
}
function setupAsyncLocks(config, futureCache, arg) {
const finishLock = new Lock();
updateFunctionCache(futureCache, config, arg, finishLock);
return finishLock;
}
function updateFunctionCache(cache, config, arg, value) {
if (!config.configured()) config.forever();
let cachedValue = cache.get(arg);
config.deactivate();
switch (config.mode()) {
case "forever":
cachedValue = [{
value,
valid: genTrue
}];
cache.set(arg, cachedValue);
break;
case "invalidate":
cachedValue = [{
value,
valid: config.validator()
}];
cache.set(arg, cachedValue);
break;
case "valid":
if (cachedValue) {
cachedValue.push({
value,
valid: config.validator()
});
} else {
cachedValue = [{
value,
valid: config.validator()
}];
cache.set(arg, cachedValue);
}
}
}
class CacheConfigurator {
constructor(data) {
this._active = true;
this._never = false;
this._forever = false;
this._invalidate = false;
this._configured = false;
this._pairs = [];
this._data = void 0;
this._data = data;
}
simple() {
return makeSimpleConfigurator(this);
}
mode() {
if (this._never) return "never";
if (this._forever) return "forever";
if (this._invalidate) return "invalidate";
return "valid";
}
forever() {
if (!this._active) {
throw new Error("Cannot change caching after evaluation has completed.");
}
if (this._never) {
throw new Error("Caching has already been configured with .never()");
}
this._forever = true;
this._configured = true;
}
never() {
if (!this._active) {
throw new Error("Cannot change caching after evaluation has completed.");
}
if (this._forever) {
throw new Error("Caching has already been configured with .forever()");
}
this._never = true;
this._configured = true;
}
using(handler) {
if (!this._active) {
throw new Error("Cannot change caching after evaluation has completed.");
}
if (this._never || this._forever) {
throw new Error("Caching has already been configured with .never or .forever()");
}
this._configured = true;
const key = handler(this._data);
const fn = (0, _async.maybeAsync)(handler, `You appear to be using an async cache handler, but Babel has been called synchronously`);
if ((0, _async.isThenable)(key)) {
return key.then(key => {
this._pairs.push([key, fn]);
return key;
});
}
this._pairs.push([key, fn]);
return key;
}
invalidate(handler) {
this._invalidate = true;
return this.using(handler);
}
validator() {
const pairs = this._pairs;
return function* (data) {
for (const [key, fn] of pairs) {
if (key !== (yield* fn(data))) return false;
}
return true;
};
}
deactivate() {
this._active = false;
}
configured() {
return this._configured;
}
}
function makeSimpleConfigurator(cache) {
function cacheFn(val) {
if (typeof val === "boolean") {
if (val) cache.forever();else cache.never();
return;
}
return cache.using(() => assertSimpleType(val()));
}
cacheFn.forever = () => cache.forever();
cacheFn.never = () => cache.never();
cacheFn.using = cb => cache.using(() => assertSimpleType(cb()));
cacheFn.invalidate = cb => cache.invalidate(() => assertSimpleType(cb()));
return cacheFn;
}
function assertSimpleType(value) {
if ((0, _async.isThenable)(value)) {
throw new Error(`You appear to be using an async cache handler, ` + `which your current version of Babel does not support. ` + `We may add support for this in the future, ` + `but if you're on the most recent version of @babel/core and still ` + `seeing this error, then you'll need to synchronously handle your caching logic.`);
}
if (value != null && typeof value !== "string" && typeof value !== "boolean" && typeof value !== "number") {
throw new Error("Cache keys must be either string, boolean, number, null, or undefined.");
}
return value;
}
class Lock {
constructor() {
this.released = false;
this.promise = void 0;
this._resolve = void 0;
this.promise = new Promise(resolve => {
this._resolve = resolve;
});
}
release(value) {
this.released = true;
this._resolve(value);
}
}
0 && 0;
//# sourceMappingURL=caching.js.map
