mass Framework前后通吃,后端是基于node.js组建起来。后端与前端不一样,是依赖于node.js内置模块提供的一些API,因此前端那些依赖于浏览器提供的DOM API的模块无法复用。现在掐指一算,基本上核心模块上只有lang, flow能用得上,more则多一点,如random, pinyin, base64, uuid...
node.js内置了模块加载机制,这与我在前端使用的API非常不一致,我就再把它包装一层。核心模块与前端的核心模块在其他方法也尽量保持一致,当然像domReady在后端就不需要,去掉。如类型判定,由于是V8引擎,支持ECMA262v5,因此可以写得精简。最大的不同是,DEBUG用到mass.log,它的第二个参数是表示格式化高亮。
代码是暂时丢在这里,以后还要做各种扩展的!
(function(){
//后端部分 2011.12.4 by 司徒正美
function mass(){}
var
version = 0.1,
class2type = {
"[object global]" : "Global" ,
"null" : "Null" ,
"NaN" : "NaN" ,
"undefined" : "Undefined"
},
toString = class2type.toString;
/**
* 糅杂,为一个对象添加更多成员
* @param {Object} target 目标对象
* @param {Object} source 属性包
* @return {Object} 目标对象
*/
function mix(target, source){
var args = [].slice.call(arguments), key,
ride = typeof args[args.length - 1] == "boolean" ? args.pop() : true;
target = target || {};
for(var i = 1; source = args[i++];){
for (key in source) {
if (ride || !(key in target)) {
target[key] = source[key];
}
}
}
return target;
}
var rformat = /
([\d\D]+?)<\/code>/ig;
var formats = {
bold : [1, 22],
italic : [3, 23],
underline : [4, 24],
inverse : [7, 27],
strike : [9, 29]
};
var colors = {};
['black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white'].forEach(function(word,i){
colors[word] = i
});
colors.gray = 99;
function format (arr, str) {
return '\x1b[' + arr[0] + 'm' + str + '\x1b[' + arr[1] + 'm';
};
mix(mass,{//为此版本的命名空间对象添加成员
rword : /[^, ]+/g,
v : version,
"@debug" : true,
root: process.cwd(),
/**
* 数组化
* @param {ArrayLike} nodes 要处理的类数组对象
* @param {Number} start 可选。要抽取的片断的起始下标。如果是负数,从后面取起
* @param {Number} end 可选。规定从何处结束选取
* @return {Array}
*/
slice: function (nodes, start, end) {
for(var i = 0,n = nodes.length, result = []; i < n; i++){
result[i] = nodes[i];
}
if (arguments.length > 1) {
return result.slice(start , (end || result.length));
} else {
return result;
}
},
/**
* 用于取得数据的类型或判定数据的类型
* @param {Any} obj 要检测的东西
* @param {String} str 要比较的类型
* @return {String|Boolean}
*/
type : function (obj, str){
var result = class2type[ (obj == null || obj !== obj )? obj : toString.call(obj) ] || "#";
if( result.charAt(0) === "#"){
if(Buffer.isBuffer(obj)){
result = 'Buffer'; //返回构造器名字
}else{
result = toString.call(obj).slice(8,-1);
}
}
if(str){
return str === result;
}
return result;
},
/**
* 用于调试
* @param {String} s 要打印的内容
* @param {Boolean} color 进行各种颜色的高亮,使用<code style="format:blod;color:red;background:green">
* format的值可以为formats中五个之一或它们的组合(以空格隔开),背景色与字体色只能为colors之一
*/
log:function (s, color){
if(color){
s = s.replace(rformat,function(a,style,ret){
style.toLowerCase().split(";").forEach(function(arr){
arr = arr.split(":");
var type = arr[0].trim(),val = arr[1].trim();
switch(type){
case "format":
val.replace(/\w+/g,function(word){
if(formats[word]){
ret = format(formats[word],ret)
}
});
break;
case "background":
case "color":
var array = type == "color" ? [30,39] : [40,49]
if( colors[val]){
array[0] += colors[val]
ret = format(array,ret)
}
}
});
return ret;
});
}
console.log(s);
},
/**
* 生成键值统一的对象,用于高速化判定
* @param {Array|String} array 如果是字符串,请用","或空格分开
* @param {Number} val 可选,默认为1
* @return {Object}
*/
oneObject : function(array, val){
if(typeof array == "string"){
array = array.match(mass.rword) || [];
}
var result = {},value = val !== void 0 ? val :1;
for(var i=0,n=array.length;i < n;i++){
result[array[i]] = value;
}
return result;
},
mix:mix
});
mass.noop = mass.error = function(){};
"Boolean,Number,String,Function,Array,Date,RegExp,Arguments".replace(mass.rword,function(name){
class2type[ "[object " + name + "]" ] = name;
});
var
rmodule = /([^(\s]+)\(?([^)]*)\)?/,
names = [],//需要处理的模块名列表
rets = {},//用于收集模块的返回值
cbi = 1e4 ;//用于生成回调函数的名字
var map = mass["@modules"] = {};
//执行并移除所有依赖都具备的模块或回调
function resolveCallbacks(){
loop:
for (var i = names.length,repeat, name; name = names[--i]; ) {
var obj = map[name], deps = obj.deps;
for(var key in deps){
if(deps.hasOwnProperty(key) && map[key].state != 2 ){
continue loop;
}
}
//如果deps是空对象或者其依赖的模块的状态都是2
if( obj.state != 2){
names.splice(i,1);//必须先移除再执行
var fn = obj.callback;
rets[fn._name] = fn.apply(null,incarnate(obj.args));//只收集模块的返回值
obj.state = 2;
repeat = true;
}
}
repeat && resolveCallbacks();
}
function incarnate(args){//传入一组模块名,返回对应模块的返回值
for(var i = 0,ret = [], name; name = args[i++];){
ret.push(rets[name]);
}
return ret;
}
function deferred(){//一个简单的异步列队
var list = [],self = function(fn){
fn && fn.call && list.push(fn);
return self;
}
self.method = "pop";
self.fire = function(fn){
while(fn = list[self.method]()){
fn();
}
return list.length ? self : self.complete();
}
self.complete = mass.noop;
return self;
}
var nativeModules = mass.oneObject("assert,child_process,cluster,crypto,dgram,dns,"+
"events,fs,http,https,net,os,path,querystring,readline,repl,tls,tty,url,util,vm,zlib")
function useNativeRequire(name,url){
var nick = name.slice(1);
if(nativeModules[nick]){
map[name].state = 2;
rets[name] = require(nick);
resolveCallbacks();
}else{
url = url || mass.root+"/" + nick + ".js";
try{
require(url);
resolveCallbacks()
}catch(e){
mass.stack(Function('mass.log("\033[31m'+e+'\033[39m")'));
mass.stack.fire();//打印错误堆栈
}
}
}
mass.mix(mass,{
stack : deferred(),
define:function(name,deps,callback){//模块名,依赖列表,模块本身
if(typeof deps == "function"){//处理只有两个参数的情况
callback = deps;
deps = "";
}
callback._name = "@"+name; //模块名
this.require(deps,callback);
},
require:function(deps,callback,errback){//依赖列表,正向回调,负向回调
var _deps = {}, args = [], dn = 0, cn = 0;
(deps +"").replace(mass.rword,function(url,name,match){
dn++;
match = url.match(rmodule);
name = "@"+ match[1];//取得模块名
if(!map[name]){ //防止重复生成节点与请求
map[name] = { };//state: undefined, 未加载; 1 已加载; 2 : 已执行
useNativeRequire(name,match[2]);//加载模块
}else if(map[name].state === 2){
cn++;
}
if(!_deps[name] ){
args.push(name);
_deps[name] = "司徒正美";//去重
}
});
var cbname = callback._name;
if(dn === cn ){//在依赖都已执行过或没有依赖的情况下
if(cbname && !(cbname in rets)){
map[cbname].state = 2 //如果是使用合并方式,模块会跑进此分支(只会执行一次)
return rets[cbname] = callback.apply(null,incarnate(args));
}else if(!cbname){//普通的回调可执行无数次
return callback.apply(null,incarnate(args))
}
}
cbname = cbname || "@cb"+ (cbi++).toString(32);
if(errback){
mass.stack(errback);//压入错误堆栈
}
map[cbname] = {//创建或更新模块的状态
callback:callback,
deps:_deps,
args: args,
state: 1
};//在正常情况下模块只能通过resolveCallbacks执行
names.unshift(cbname);
resolveCallbacks();
}
});
exports.mass = global.mass = mass;
})();