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更新request模块, 支持end不传参(返回Promise对象)

old
宇天 2017-11-08 13:44:26 +08:00
parent 99c95cf4a6
commit b13b8573b9
2 changed files with 606 additions and 645 deletions
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937
js/lib/request/es5.js
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314
js/lib/request/promise.js
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@ -5,233 +5,219 @@
*
*/
"use strict";
'use strict';
define(function(){
define(function() {
var _Promise = function(callback) {
this.callback = [];
var _this = this;
var _Promise = function(callback){
this.callback = []
var _this = this
if (typeof this !== 'object')
throw new TypeError('Promises must be constructed via new');
if(typeof this !== 'object')
throw new TypeError('Promises must be constructed via new')
if (typeof callback !== 'function')
throw new TypeError('Argument must be a function');
if(typeof callback !== 'function')
throw new TypeError('Argument must be a function')
callback(function(val){
_resolve(_this, val)
}, function(val){
_reject(_this, val)
})
}
callback(
function(val) {
_resolve(_this, val);
},
function(val) {
_reject(_this, val);
}
);
};
var self = {
_state: 1,
_fired: 1,
_val: 1,
callback: 1
}
};
_Promise.prototype = {
constructor: _Promise,
_state: 'pending',
_fired: false,
_fire: function(yes, no){
if(this._state === 'rejected'){
if(typeof no === 'function')
no(this._val)
else
throw this._val
}else{
if(typeof yes === 'function')
yes(this._val)
_fire: function(yes, no) {
if (this._state === 'rejected') {
if (typeof no === 'function') no(this._val);
else throw this._val;
} else {
if (typeof yes === 'function') yes(this._val);
}
},
_then: function(yes, no){
if(this._fired){
var _this = this
fireCallback(_this, function(){
_this._fire(yes, no)
})
}else{
this.callback.push({yes: yes, no: no})
_then: function(yes, no) {
if (this._fired) {
var _this = this;
fireCallback(_this, function() {
_this._fire(yes, no);
});
} else {
this.callback.push({ yes: yes, no: no });
}
},
then: function(yes, no){
yes = typeof yes === 'function' ? yes : _yes
no = typeof no === 'function' ? no : _no
var _this = this
var next = new _Promise(function(resolve, reject){
_this._then(function(val){
try{
val = yes(val)
}catch(err){
return reject(err)
then: function(yes, no) {
yes = typeof yes === 'function' ? yes : _yes;
no = typeof no === 'function' ? no : _no;
var _this = this;
var next = new _Promise(function(resolve, reject) {
_this._then(
function(val) {
try {
val = yes(val);
} catch (err) {
return reject(err);
}
}, function(val){
try{
val = no(val)
}catch(err){
return reject(err)
},
function(val) {
try {
val = no(val);
} catch (err) {
return reject(err);
}
resolve(val)
})
})
for(var i in _this){
if(!self[i])
next[i] = _this[i]
resolve(val);
}
);
});
for (var i in _this) {
if (!self[i]) next[i] = _this[i];
}
return next
return next;
},
done: done,
catch: fail,
fail: fail
};
_Promise.all = function(arr) {
return _some(false, arr);
};
_Promise.race = function(arr) {
return _some(true, arr);
};
_Promise.defer = defer;
// -----------------------------------------------------------
function _yes(val) {
return val;
}
_Promise.all = function(arr){
return _some(false, arr)
function _no(err) {
throw err;
}
_Promise.race = function(arr){
return _some(true, arr)
function done(callback) {
return this.then(callback, _no);
}
_Promise.defer = defer
// -----------------------------------------------------------
function _yes(val){
return val
function fail(callback) {
return this.then(_yes, callback);
}
function _no(err){
throw err
function defer() {
var obj = {};
obj.promise = new this(function(yes, no) {
obj.resolve = yes;
obj.reject = no;
});
return obj;
}
function done(callback){
return this.then(callback, _no)
}
function fail(callback){
return this.then(_yes, callback)
}
function defer(){
var obj = {}
obj.promise = new this(function(yes, no){
obj.resolve = yes
obj.reject = no
})
return obj
}
//成功的回调
function _resolve(obj, val){
if(obj._state !== 'pending')
return
function _resolve(obj, val) {
if (obj._state !== 'pending') return;
if(val && typeof val.then === 'function'){
var method = val instanceof _Promise ? '_then' : 'then'
val[method](function(v){
_transmit(obj, v, true)
}, function(v){
_transmit(obj, v, false)
})
}else{
_transmit(obj, val, true)
if (val && typeof val.then === 'function') {
var method = val instanceof _Promise ? '_then' : 'then';
val[method](
function(v) {
_transmit(obj, v, true);
},
function(v) {
_transmit(obj, v, false);
}
);
} else {
_transmit(obj, val, true);
}
}
//失败的回调
function _reject(obj, val){
if(obj._state !== 'pending')
return
function _reject(obj, val) {
if (obj._state !== 'pending') return;
_transmit(obj, val, false)
_transmit(obj, val, false);
}
// 改变Promise的_fired值，并保持用户传参，触发所有回调
function _transmit(obj, val, isResolved){
obj._fired = true
obj._val = val
obj._state = isResolved ? 'fulfilled' : 'rejected'
function _transmit(obj, val, isResolved) {
obj._fired = true;
obj._val = val;
obj._state = isResolved ? 'fulfilled' : 'rejected';
fireCallback(obj, function(){
for(var i in obj.callback){
obj._fire(obj.callback[i].yes, obj.callback[i].no)
fireCallback(obj, function() {
for (var i in obj.callback) {
obj._fire(obj.callback[i].yes, obj.callback[i].no);
}
})
});
}
function fireCallback(obj, callback) {
var isAsync = false;
function fireCallback(obj, callback){
var isAsync = false
if (typeof obj.async === 'boolean') isAsync = obj.async;
else isAsync = obj.async = true;
if(typeof obj.async === 'boolean')
isAsync = obj.async
else
isAsync = obj.async = true
if(isAsync)
setTimeout(callback, 0)
else
callback()
if (isAsync) setTimeout(callback, 0);
else callback();
}
function _some(bool, iterable) {
iterable = Array.isArray(iterable) ? iterable : [];
function _some(bool, iterable){
iterable = Array.isArray(iterable) ? iterable : []
var n = 0;
var res = [];
var end = false;
var n = 0
var res = []
var end = false
return new _Promise(function(yes, no) {
if (!iterable.length) no(res);
return new _Promise(function(yes, no){
if(!iterable.length)
no(res)
function loop(obj, idx){
obj.then(function(val){
if(!end){
res[idx] = val
n++
if(bool || n >= iterable.length){
yes(bool ? val : res)
end = true
function loop(obj, idx) {
obj.then(
function(val) {
if (!end) {
res[idx] = val;
n++;
if (bool || n >= iterable.length) {
yes(bool ? val : res);
end = true;
}
}
},
function(val) {
end = true;
no(val);
}
}, function(val){
end = true
no(val)
})
);
}
for(var i = 0, len = iterable.length; i < len; i++){
loop(iterable[i], i)
for (var i = 0, len = iterable.length; i < len; i++) {
loop(iterable[i], i);
}
})
});
}
// ---------------------------------------------------------------
// ---------------------------------------------------------------
var nativePromise = window.Promise
if(/native code/.test(nativePromise)){
nativePromise.prototype.done = done
nativePromise.prototype.fail = fail
if(!nativePromise.defer)
nativePromise.defer = defer
var nativePromise = window.Promise;
if (/native code/.test(nativePromise)) {
nativePromise.prototype.done = done;
nativePromise.prototype.fail = fail;
if (!nativePromise.defer) nativePromise.defer = defer;
}
return window.Promise = nativePromise || _Promise
})
return (window.Promise = nativePromise || _Promise);
});