node_modules

node_modules/cyclist/index.js

@@ -0,0 +1,33 @@
+var ensureTwoPower = function(n) {
+	if (n && !(n & (n - 1))) return n;
+	var p = 1;
+	while (p < n) p <<= 1;
+	return p;
+};
+
+var Cyclist = function(size) {
+	if (!(this instanceof Cyclist)) return new Cyclist(size);
+	size = ensureTwoPower(size);
+	this.mask = size-1;
+	this.size = size;
+	this.values = new Array(size);
+};
+
+Cyclist.prototype.put = function(index, val) {
+	var pos = index & this.mask;
+	this.values[pos] = val;
+	return pos;
+};
+
+Cyclist.prototype.get = function(index) {
+	return this.values[index & this.mask];
+};
+
+Cyclist.prototype.del = function(index) {
+	var pos = index & this.mask;
+	var val = this.values[pos];
+	this.values[pos] = undefined;
+	return val;
+};
+
+module.exports = Cyclist;