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module.exports = ProtoList
function ProtoList () { this.list = [] }
ProtoList.prototype =
{ get length () { return this.list.length }
, get keys () {
var k = []
for (var i in this.list[0]) k.push(i)
return k
}
, get snapshot () {
var o = {}
this.keys.forEach(function (k) { o[k] = this.get(k) }, this)
return o
}
, push : function (obj) {
if (typeof obj !== "object") obj = {valueOf:obj}
if (this.list.length >= 1) {
this.list[this.list.length - 1].__proto__ = obj
}
obj.__proto__ = Object.prototype
return this.list.push(obj)
}
, pop : function () {
if (this.list.length >= 2) {
this.list[this.list.length - 2].__proto__ = Object.prototype
}
return this.list.pop()
}
, unshift : function (obj) {
obj.__proto__ = this.list[0] || Object.prototype
return this.list.unshift(obj)
}
, shift : function () {
if (this.list.length >= 1) {
this.list[0].__proto__ = Object.prototype
}
return this.list.shift()
}
, get : function (key) {
return this.list[this.list.length - 1][key]
}
, set : function (key, val, save) {
if (!this.length) this.push({})
if (save && this.list[0].hasOwnProperty(key)) this.push({})
return this.list[0][key] = val
}
, forEach : function (fn, thisp) {
for (var key in this.list[0]) fn.call(thisp, key, this.list[0][key])
}
, slice : function () {
return this.list.slice.apply(this.list, arguments)
}
, splice : function () {
return this.list.splice.apply(this.list, arguments)
}
}
if (module !== process.mainModule) return
var assert = require("assert")
, sys = require("sys")
sys.debug("testing")
var p = new ProtoList
p.push({foo:"bar"})
p.push({})
p.set("foo", "baz")
assert.equal(p.get("foo"), "baz")
var p = new ProtoList
p.push({foo:"bar"})
p.set("foo", "baz")
assert.equal(p.get("foo"), "baz")
assert.equal(p.length, 1)
p.pop()
assert.equal(p.length, 0)
p.set("foo", "asdf")
assert.equal(p.length, 1)
assert.equal(p.get("foo"), "asdf")
p.push({bar:"baz"})
assert.equal(p.length, 2)
assert.equal(p.get("foo"), "asdf")
p.shift()
assert.equal(p.length, 1)
assert.equal(p.get("foo"), undefined)
sys.debug("ok")
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