Sha256: 4cfd33ba05c3f5a6d210cfefa3a08ce46864469686d32af047b1a0f610323218
Contents?: true
Size: 1.38 KB
Versions: 17
Compression:
Stored size: 1.38 KB
Contents
var to_array = require("./to_array");
// Queue class adapted from Tim Caswell's pattern library
// http://github.com/creationix/pattern/blob/master/lib/pattern/queue.js
function Queue() {
this.tail = [];
this.head = [];
this.offset = 0;
}
Queue.prototype.shift = function () {
if (this.offset === this.head.length) {
var tmp = this.head;
tmp.length = 0;
this.head = this.tail;
this.tail = tmp;
this.offset = 0;
if (this.head.length === 0) {
return;
}
}
return this.head[this.offset++]; // sorry, JSLint
};
Queue.prototype.push = function (item) {
return this.tail.push(item);
};
Queue.prototype.forEach = function (fn, thisv) {
var array = this.head.slice(this.offset), i, il;
array.push.apply(array, this.tail);
if (thisv) {
for (i = 0, il = array.length; i < il; i += 1) {
fn.call(thisv, array[i], i, array);
}
} else {
for (i = 0, il = array.length; i < il; i += 1) {
fn(array[i], i, array);
}
}
return array;
};
Queue.prototype.getLength = function () {
return this.head.length - this.offset + this.tail.length;
};
Object.defineProperty(Queue.prototype, 'length', {
get: function () {
return this.getLength();
}
});
if(typeof module !== 'undefined' && module.exports) {
module.exports = Queue;
}
Version data entries
17 entries across 17 versions & 2 rubygems