update

APP/nexus-remote/node_modules/@msgpack/msgpack/dist.es5+esm/CachedKeyDecoder.mjs

@@ -0,0 +1,64 @@
+import { utf8DecodeJs } from "./utils/utf8.mjs";
+var DEFAULT_MAX_KEY_LENGTH = 16;
+var DEFAULT_MAX_LENGTH_PER_KEY = 16;
+var CachedKeyDecoder = /** @class */ (function () {
+    function CachedKeyDecoder(maxKeyLength, maxLengthPerKey) {
+        if (maxKeyLength === void 0) { maxKeyLength = DEFAULT_MAX_KEY_LENGTH; }
+        if (maxLengthPerKey === void 0) { maxLengthPerKey = DEFAULT_MAX_LENGTH_PER_KEY; }
+        this.maxKeyLength = maxKeyLength;
+        this.maxLengthPerKey = maxLengthPerKey;
+        this.hit = 0;
+        this.miss = 0;
+        // avoid `new Array(N)`, which makes a sparse array,
+        // because a sparse array is typically slower than a non-sparse array.
+        this.caches = [];
+        for (var i = 0; i < this.maxKeyLength; i++) {
+            this.caches.push([]);
+        }
+    }
+    CachedKeyDecoder.prototype.canBeCached = function (byteLength) {
+        return byteLength > 0 && byteLength <= this.maxKeyLength;
+    };
+    CachedKeyDecoder.prototype.find = function (bytes, inputOffset, byteLength) {
+        var records = this.caches[byteLength - 1];
+        FIND_CHUNK: for (var _i = 0, records_1 = records; _i < records_1.length; _i++) {
+            var record = records_1[_i];
+            var recordBytes = record.bytes;
+            for (var j = 0; j < byteLength; j++) {
+                if (recordBytes[j] !== bytes[inputOffset + j]) {
+                    continue FIND_CHUNK;
+                }
+            }
+            return record.str;
+        }
+        return null;
+    };
+    CachedKeyDecoder.prototype.store = function (bytes, value) {
+        var records = this.caches[bytes.length - 1];
+        var record = { bytes: bytes, str: value };
+        if (records.length >= this.maxLengthPerKey) {
+            // `records` are full!
+            // Set `record` to an arbitrary position.
+            records[(Math.random() * records.length) | 0] = record;
+        }
+        else {
+            records.push(record);
+        }
+    };
+    CachedKeyDecoder.prototype.decode = function (bytes, inputOffset, byteLength) {
+        var cachedValue = this.find(bytes, inputOffset, byteLength);
+        if (cachedValue != null) {
+            this.hit++;
+            return cachedValue;
+        }
+        this.miss++;
+        var str = utf8DecodeJs(bytes, inputOffset, byteLength);
+        // Ensure to copy a slice of bytes because the byte may be NodeJS Buffer and Buffer#slice() returns a reference to its internal ArrayBuffer.
+        var slicedCopyOfBytes = Uint8Array.prototype.slice.call(bytes, inputOffset, inputOffset + byteLength);
+        this.store(slicedCopyOfBytes, str);
+        return str;
+    };
+    return CachedKeyDecoder;
+}());
+export { CachedKeyDecoder };
+//# sourceMappingURL=CachedKeyDecoder.mjs.map