Version 1

[yaffs-website] / node_modules / bluebird / js / release / queue.js

diff --git a/node_modules/bluebird/js/release/queue.js b/node_modules/bluebird/js/release/queue.js
new file mode 100644 (file)
index 0000000..84d57d5
--- /dev/null
+++ b/node_modules/bluebird/js/release/queue.js
@@ -0,0 +1,90 @@
+"use strict";
+function arrayMove(src, srcIndex, dst, dstIndex, len) {
+    for (var j = 0; j < len; ++j) {
+        dst[j + dstIndex] = src[j + srcIndex];
+        src[j + srcIndex] = void 0;
+    }
+}
+
+function Queue(capacity) {
+    this._capacity = capacity;
+    this._length = 0;
+    this._front = 0;
+}
+
+Queue.prototype._willBeOverCapacity = function (size) {
+    return this._capacity < size;
+};
+
+Queue.prototype._pushOne = function (arg) {
+    var length = this.length();
+    this._checkCapacity(length + 1);
+    var i = (this._front + length) & (this._capacity - 1);
+    this[i] = arg;
+    this._length = length + 1;
+};
+
+Queue.prototype._unshiftOne = function(value) {
+    var capacity = this._capacity;
+    this._checkCapacity(this.length() + 1);
+    var front = this._front;
+    var i = (((( front - 1 ) &
+                    ( capacity - 1) ) ^ capacity ) - capacity );
+    this[i] = value;
+    this._front = i;
+    this._length = this.length() + 1;
+};
+
+Queue.prototype.unshift = function(fn, receiver, arg) {
+    this._unshiftOne(arg);
+    this._unshiftOne(receiver);
+    this._unshiftOne(fn);
+};
+
+Queue.prototype.push = function (fn, receiver, arg) {
+    var length = this.length() + 3;
+    if (this._willBeOverCapacity(length)) {
+        this._pushOne(fn);
+        this._pushOne(receiver);
+        this._pushOne(arg);
+        return;
+    }
+    var j = this._front + length - 3;
+    this._checkCapacity(length);
+    var wrapMask = this._capacity - 1;
+    this[(j + 0) & wrapMask] = fn;
+    this[(j + 1) & wrapMask] = receiver;
+    this[(j + 2) & wrapMask] = arg;
+    this._length = length;
+};
+
+Queue.prototype.shift = function () {
+    var front = this._front,
+        ret = this[front];
+
+    this[front] = undefined;
+    this._front = (front + 1) & (this._capacity - 1);
+    this._length--;
+    return ret;
+};
+
+Queue.prototype.length = function () {
+    return this._length;
+};
+
+Queue.prototype._checkCapacity = function (size) {
+    if (this._capacity < size) {
+        this._resizeTo(this._capacity << 1);
+    }
+};
+
+Queue.prototype._resizeTo = function (capacity) {
+    var oldCapacity = this._capacity;
+    this._capacity = capacity;
+    var front = this._front;
+    var length = this._length;
+    var moveItemsCount = (front + length) & (oldCapacity - 1);
+    arrayMove(this, 0, this, oldCapacity, moveItemsCount);
+};
+
+module.exports = Queue;