@allmaps/stdlib/dist/cache.js

Allmaps Standard Library

export function getPropertyFromCacheOrComputation(cache, key, computation, checkUse = () => true, checkStore = () => true) {
    if (cache.has(key) && checkUse(cache.get(key))) {
        return cache.get(key);
    }
    else {
        const result = computation();
        if (checkStore(result)) {
            cache.set(key, result);
        }
        return result;
    }
}
export function getPropertyFromDoubleCacheOrComputation(cache, key0, key1, computation, checkUse = () => true, checkStore = () => true) {
    if (cache.get(key0)?.has(key1) && checkUse(cache.get(key0)?.get(key1))) {
        return cache.get(key0)?.get(key1);
    }
    else {
        const result = computation();
        if (checkStore(result)) {
            if (!cache.get(key0)) {
                cache.set(key0, new Map());
            }
            cache.get(key0)?.set(key1, result);
        }
        return result;
    }
}
export function getPropertyFromTripleCacheOrComputation(cache, key0, key1, key2, computation, checkUse = () => true, checkStore = () => true) {
    if (cache.get(key0)?.get(key1)?.has(key2) &&
        checkUse(cache.get(key0)?.get(key1)?.get(key2))) {
        return cache.get(key0)?.get(key1)?.get(key2);
    }
    else {
        const result = computation();
        if (checkStore(result)) {
            if (!cache.get(key0)) {
                cache.set(key0, new Map());
            }
            if (!cache.get(key0)?.get(key1)) {
                cache.get(key0)?.set(key1, new Map());
            }
            cache.get(key0)?.get(key1)?.set(key2, result);
        }
        return result;
    }
}