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move Deferred constructor out of m.deferred

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This commit is contained in:
Leo Horie 2014-08-16 16:50:44 -04:00
parent f832b67585
commit bf288b09c5
1 changed files with 127 additions and 129 deletions
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256
mithril.js
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@ -563,7 +563,6 @@ Mithril = m = new function app(window, undefined) {
cellCache[cacheKey] = undefined
}
var none = {}
function newPromisedProp(prop, promise) {
prop.then = function () {
var newProp = m.prop()
@ -584,136 +583,135 @@ Mithril = m = new function app(window, undefined) {
return prop
}
m.deferred = function () {
// Promiz.mithril.js | Zolmeister | MIT
function Deferred(fn, er) {
// states
// 0: pending
// 1: resolving
// 2: rejecting
// 3: resolved
// 4: rejected
var self = this,
state = 0,
val = 0,
next = [];
self['promise'] = self
self['resolve'] = function (v) {
if (!state) {
val = v
state = 1
fire()
}
return this
}
self['reject'] = function (v) {
if (!state) {
val = v
state = 2
fire()
}
return this
}
self['then'] = function (fn, er) {
var d = new Deferred(fn, er)
if (state == 3) {
d.resolve(val)
}
else if (state == 4) {
d.reject(val)
}
else {
next.push(d)
}
return d
}
var finish = function (type) {
state = type || 4
next.map(function (p) {
state == 3 && p.resolve(val) || p.reject(val)
})
}
// ref : reference to 'then' function
// cb, ec, cn : successCallback, failureCallback, notThennableCallback
function thennable (ref, cb, ec, cn) {
if ((typeof val == 'object' || typeof val == 'function') && typeof ref == 'function') {
try {
// cnt protects against abuse calls from spec checker
var cnt = 0
ref.call(val, function (v) {
if (cnt++) return
val = v
cb()
}, function (v) {
if (cnt++) return
val = v
ec()
})
} catch (e) {
val = e
ec()
}
} else {
cn()
}
};
function fire() {
// check if it's a thenable
var ref;
try {
ref = val && val.then
} catch (e) {
val = e
state = 2
return fire()
}
thennable(ref, function () {
state = 1
fire()
}, function () {
state = 2
fire()
}, function () {
try {
if (state == 1 && typeof fn == 'function') {
val = fn(val)
}
else if (state == 2 && typeof er == 'function') {
val = er(val)
state = 1
}
} catch (e) {
val = e
return finish()
}
if (val == self) {
val = TypeError()
finish()
} else thennable(ref, function () {
finish(3)
}, finish, function () {
finish(state == 1 && 3)
})
})
}
}
return newPromisedProp(m.prop(), new Deferred())
}
// Promiz.mithril.js | Zolmeister | MIT
function Deferred(fn, er) {
// states
// 0: pending
// 1: resolving
// 2: rejecting
// 3: resolved
// 4: rejected
var self = this,
state = 0,
val = 0,
next = [];
self['promise'] = self
self['resolve'] = function (v) {
if (!state) {
val = v
state = 1
fire()
}
return this
}
self['reject'] = function (v) {
if (!state) {
val = v
state = 2
fire()
}
return this
}
self['then'] = function (fn, er) {
var d = new Deferred(fn, er)
if (state == 3) {
d.resolve(val)
}
else if (state == 4) {
d.reject(val)
}
else {
next.push(d)
}
return d
}
var finish = function (type) {
state = type || 4
next.map(function (p) {
state == 3 && p.resolve(val) || p.reject(val)
})
}
// ref : reference to 'then' function
// cb, ec, cn : successCallback, failureCallback, notThennableCallback
function thennable (ref, cb, ec, cn) {
if ((typeof val == 'object' || typeof val == 'function') && typeof ref == 'function') {
try {
// cnt protects against abuse calls from spec checker
var cnt = 0
ref.call(val, function (v) {
if (cnt++) return
val = v
cb()
}, function (v) {
if (cnt++) return
val = v
ec()
})
} catch (e) {
val = e
ec()
}
} else {
cn()
}
};
function fire() {
// check if it's a thenable
var ref;
try {
ref = val && val.then
} catch (e) {
val = e
state = 2
return fire()
}
thennable(ref, function () {
state = 1
fire()
}, function () {
state = 2
fire()
}, function () {
try {
if (state == 1 && typeof fn == 'function') {
val = fn(val)
}
else if (state == 2 && typeof er == 'function') {
val = er(val)
state = 1
}
} catch (e) {
val = e
return finish()
}
if (val == self) {
val = TypeError()
finish()
} else thennable(ref, function () {
finish(3)
}, finish, function () {
finish(state == 1 && 3)
})
})
}
}
m.sync = function(args) {
var method = "resolve"
function synchronizer(pos, resolved) {