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72 lines
1.3 KiB
72 lines
1.3 KiB
package cx.sfy.LagAssist.utils;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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public class Cache<S, T> {
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protected class Cachebox {
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protected T cached;
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protected int time;
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protected Cachebox(T cached, int time) {
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this.cached = cached;
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this.time = time;
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}
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protected boolean tick() {
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time--;
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return time <= 0;
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}
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}
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private int cachetime;
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private Map<S, Cachebox> cachestorage = new HashMap<S, Cachebox>();
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public Cache(int cachetime) {
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this.cachetime = cachetime;
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}
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public void putCached(S key, T cached) {
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cachestorage.put(key, new Cachebox(cached, cachetime));
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}
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public boolean isCached(S key) {
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return cachestorage.containsKey(key);
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}
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public T getCached(S key) {
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if (isCached(key)) {
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return cachestorage.get(key).cached;
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}
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return null;
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}
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public void tick() {
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Set<S> removables = new HashSet<S>();
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for (S key : cachestorage.keySet()) {
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Cachebox box = cachestorage.get(key);
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if (!box.tick()) {
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continue;
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}
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removables.add(key);
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}
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cachestorage.keySet().removeAll(removables);
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}
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public void clear() {
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cachestorage.clear();
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}
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public boolean remove(S key) {
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return cachestorage.remove(key) != null;
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}
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}
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