awa

_internal/editor/esm/vs/base/common/cache.js

@@ -0,0 +1,60 @@
+export function identity(t) {
+    return t;
+}
+/**
+ * Uses a LRU cache to make a given parametrized function cached.
+ * Caches just the last key/value.
+*/
+export class LRUCachedFunction {
+    constructor(arg1, arg2) {
+        this.lastCache = undefined;
+        this.lastArgKey = undefined;
+        if (typeof arg1 === 'function') {
+            this._fn = arg1;
+            this._computeKey = identity;
+        }
+        else {
+            this._fn = arg2;
+            this._computeKey = arg1.getCacheKey;
+        }
+    }
+    get(arg) {
+        const key = this._computeKey(arg);
+        if (this.lastArgKey !== key) {
+            this.lastArgKey = key;
+            this.lastCache = this._fn(arg);
+        }
+        return this.lastCache;
+    }
+}
+/**
+ * Uses an unbounded cache to memoize the results of the given function.
+*/
+export class CachedFunction {
+    get cachedValues() {
+        return this._map;
+    }
+    constructor(arg1, arg2) {
+        this._map = new Map();
+        this._map2 = new Map();
+        if (typeof arg1 === 'function') {
+            this._fn = arg1;
+            this._computeKey = identity;
+        }
+        else {
+            this._fn = arg2;
+            this._computeKey = arg1.getCacheKey;
+        }
+    }
+    get(arg) {
+        const key = this._computeKey(arg);
+        if (this._map2.has(key)) {
+            return this._map2.get(key);
+        }
+        const value = this._fn(arg);
+        this._map.set(arg, value);
+        this._map2.set(key, value);
+        return value;
+    }
+}
+//# sourceMappingURL=cache.js.map