| 50 | | classScope = args.pop(); |
|---|
| 51 | | var classID = Class.__idcount__++; |
|---|
| 52 | | |
|---|
| 53 | | if((args.length>0) && (typeof args[0] =='string')){ |
|---|
| 54 | | name=args.shift(); |
|---|
| 55 | | }else{ |
|---|
| 56 | | name="anonymous" + classID; |
|---|
| 57 | | } |
|---|
| 58 | | |
|---|
| 59 | | var bases = args; |
|---|
| 60 | | |
|---|
| 61 | | //set up the 'public static' fields of the class |
|---|
| 62 | | var __class__={__isArray__ : false, |
|---|
| 63 | | __name__ : name, |
|---|
| 64 | | __bases__: bases, |
|---|
| 65 | | __id__: '@' + classID, |
|---|
| 66 | | __str__ : function(){ |
|---|
| 67 | | return "[class %s]".format(this.__name__); |
|---|
| 68 | | } |
|---|
| 69 | | }; |
|---|
| 70 | | |
|---|
| 71 | | var baseProtos=[];//stores the prototypes of all the base classes |
|---|
| 72 | | var proto; //the prototype to use for the new class |
|---|
| 73 | | if(bases.length==0){//use Object as base |
|---|
| 74 | | proto={}; |
|---|
| 75 | | proto.__str__ = function(){ |
|---|
| 76 | | return "[%s %s]".format(this.__class__.prototype.__call__ === undefined ? 'object' : 'callable', this.__class__.__name__); |
|---|
| 77 | | }; |
|---|
| 78 | | __class__.__bases__=[Object]; |
|---|
| 79 | | }else{ //inherit from all base classes |
|---|
| 80 | | var baseProto; |
|---|
| 81 | | for(var i=0;i<bases.length;i++){ |
|---|
| 82 | | var baseClass = bases[i]; |
|---|
| 83 | | //remember the base prototypes |
|---|
| 84 | | baseProtos.push(baseClass.prototype); |
|---|
| 85 | | if(baseClass.__createProto__ !== undefined){ |
|---|
| 86 | | baseProto = baseClass.__createProto__(bases); |
|---|
| 87 | | }else{ |
|---|
| 88 | | baseProto = new baseClass(Class); |
|---|
| 89 | | } |
|---|
| 90 | | __class__.__isArray__ = __class__.__isArray__ || baseClass.__isArray__; |
|---|
| 91 | | |
|---|
| 92 | | if(i==0){//for the first base class just use it's proto as the final proto |
|---|
| 93 | | proto = baseProto; |
|---|
| 94 | | }else{//for all others extend(do not overwrite) the final proto with the properties in the baseProto |
|---|
| 95 | | for(var key in baseProto){ |
|---|
| 96 | | if(proto[key] === undefined){ |
|---|
| 97 | | proto[key] = baseProto[key]; |
|---|
| 98 | | } |
|---|
| 99 | | } |
|---|
| 100 | | } |
|---|
| 101 | | //extend the new class' static interface |
|---|
| 102 | | //todo: any props that should not be copied |
|---|
| 103 | | for(var key in baseClass){ |
|---|
| 104 | | if((key != 'prototype') && (__class__[key] === undefined)){ |
|---|
| 105 | | __class__[key] = baseClass[key]; |
|---|
| 106 | | } |
|---|
| 107 | | } |
|---|
| 108 | | } |
|---|
| 109 | | } |
|---|
| 110 | | //make sure all jsolait objects have a id method |
|---|
| 111 | | if(proto.__id__ === undefined){ |
|---|
| 112 | | proto.__id__=function(){ |
|---|
| 113 | | this.__id__ = '@' + (Class.__idcount__++); |
|---|
| 114 | | return this.__id__; |
|---|
| 115 | | }; |
|---|
| 116 | | } |
|---|
| 117 | | proto.__class__=__class__; |
|---|
| 118 | | |
|---|
| 119 | | //run the class setup function provided as classScope |
|---|
| 120 | | if(classScope.length-1 > baseProtos.length){ |
|---|
| 121 | | var privId = '__priv__' + __class__.__id__; |
|---|
| 122 | | classScope.apply(this,[proto, privId].concat(baseProtos)); |
|---|
| 123 | | }else{ |
|---|
| 124 | | classScope.apply(this,[proto].concat(baseProtos)); |
|---|
| 125 | | } |
|---|
| 126 | | |
|---|
| 127 | | //make sure the toString points to __str__, this will make overwriting __str__ after object construction impossible (todo ?) |
|---|
| 128 | | //but will be faster than having toString call __str__, also overwriting methods unless they are ment to be overridden is not cool anyways. |
|---|
| 129 | | proto.toString=proto.__str__; |
|---|
| 130 | | |
|---|
| 131 | | //allthough a single constructor would suffice for generating normal objects, Arrays and callables, |
|---|
| 132 | | //we use 3 different ones. This will minimize the code inside the constructor and therefore |
|---|
| 133 | | //minimize object construction time |
|---|
| 134 | | if(proto.__call__){ |
|---|
| 135 | | //if the callable interface is implemented we need a class constructor |
|---|
| 136 | | //which generates a function upon construction |
|---|
| 137 | | var NewClass = function(calledBy){ |
|---|
| 138 | | if(calledBy !== Class){ |
|---|
| 139 | | var rslt = function(){ |
|---|
| 140 | | return rslt.__call__.apply(rslt, arguments); |
|---|
| 141 | | }; |
|---|
| 142 | | |
|---|
| 143 | | //this will only work for the current class but not create any priv objects for any base class |
|---|
| 144 | | var proto=arguments.callee.prototype; |
|---|
| 145 | | for(var n in proto){ |
|---|
| 146 | | rslt[n] = proto[n]; |
|---|
| 147 | | } |
|---|
| 148 | | rslt.constructor = proto.__class__; |
|---|
| 149 | | rslt.toString = proto.__str__; |
|---|
| 150 | | if(rslt.__init__){ |
|---|
| 151 | | rslt.__init__.apply(rslt, arguments); |
|---|
| 152 | | } |
|---|
| 153 | | return rslt; |
|---|
| 154 | | } |
|---|
| 155 | | }; |
|---|
| 156 | | }else if(__class__.__isArray__){ |
|---|
| 157 | | //Since we cannot inherit from Array directly we take the same approach as with the callable above |
|---|
| 158 | | //and just have a constructor which creates an Array |
|---|
| 159 | | var NewClass = function(calledBy){ |
|---|
| 160 | | if(calledBy !== Class){ |
|---|
| 161 | | rslt=[]; |
|---|
| 162 | | |
|---|
| 163 | | var proto=arguments.callee.prototype; |
|---|
| 164 | | for(var n in proto){ |
|---|
| 165 | | rslt[n] = proto[n]; |
|---|
| 166 | | } |
|---|
| 167 | | rslt.constructor = proto.__class__; |
|---|
| 168 | | rslt.toString = proto.__str__; |
|---|
| 169 | | if(rslt.__init__){ |
|---|
| 170 | | rslt.__init__.apply(rslt, arguments); |
|---|
| 171 | | }else{//implement Array's default behavior |
|---|
| 172 | | if(arguments.length==1){ |
|---|
| 173 | | rslt.length=arguments[0]; |
|---|
| 174 | | }else{ |
|---|
| 175 | | for(var i=0;i<arguments.length;i++){ |
|---|
| 176 | | rslt.push(arguments[i]); |
|---|
| 177 | | } |
|---|
| 178 | | } |
|---|
| 179 | | } |
|---|
| 180 | | return rslt; |
|---|
| 181 | | } |
|---|
| 182 | | }; |
|---|
| 183 | | }else{ |
|---|
| 184 | | //this is a 'normal' object constructor which does nothing but call the __init__ method |
|---|
| 185 | | //unless it does not exsit or the constructor was used for prototyping |
|---|
| 186 | | var NewClass = function(calledBy){ |
|---|
| 187 | | if(calledBy !== Class){ |
|---|
| 188 | | if(this.__init__){ |
|---|
| 189 | | this.__init__.apply(this, arguments); |
|---|
| 190 | | } |
|---|
| 191 | | } |
|---|
| 192 | | }; |
|---|
| 193 | | } |
|---|
| 194 | | |
|---|
| 195 | | //reset the constructor for new objects to the actual constructor. |
|---|
| 196 | | proto.constructor = NewClass; |
|---|
| 197 | | proto.__class__= NewClass;//no, it is not needed, just like __str__ is not, but it is nicer than constructor |
|---|
| 198 | | |
|---|
| 199 | | //this is where the inheritance realy happens |
|---|
| 200 | | NewClass.prototype = proto; |
|---|
| 201 | | |
|---|
| 202 | | //apply all the static fileds |
|---|
| 203 | | for(var key in __class__){ |
|---|
| 204 | | NewClass[key] = __class__[key]; |
|---|
| 205 | | } |
|---|
| 206 | | NewClass.toString=__class__.__str__; |
|---|
| 207 | | |
|---|
| 208 | | return NewClass; |
|---|
| 209 | | }; |
|---|
| 210 | | Class.__idcount__=0; |
|---|
| 211 | | Class.__str__=Class.toString = function(){return "[object Class]";}; |
|---|
| 212 | | Class.__createProto__=function(){ throw "Can't use Class as a base class.";}; |
|---|
| 213 | | |
|---|
| 214 | | Function.__createProto__ = function(){ throw "Cannot inherit from Function. implement the callable interface instead using YourClass::__call__.";}; |
|---|
| 215 | | Array.__createProto__=function(){ var r =[]; r.__str__ = Array.prototype.toString; return r; }; |
|---|
| 216 | | Array.__isArray__=true; |
|---|
| 217 | | Array.__str__=Array.toString=function(){return "[class Array]";}; |
|---|
| 218 | | Object.__str__=Object.toString=function(){return "[class Object]";}; |
|---|
| 219 | | Number.__str__ =Number.toString=function(){return "[class Number]";}; |
|---|
| 220 | | String.__str__ =String.toString=function(){return "[class String]";}; |
|---|
| 221 | | |
|---|
| 222 | | /** |
|---|
| 223 | | Returns a string representation of an object. |
|---|
| 224 | | @param obj The object to return a string repr. of. |
|---|
| 225 | | @return A string repr. the object. |
|---|
| 226 | | **/ |
|---|
| 227 | | str = String; |
|---|
| 228 | | |
|---|
| 229 | | /** |
|---|
| 230 | | Return a String containing a printable representation of an object which can be used with eval() to create an equal object. |
|---|
| 231 | | Objects can cosutumize the the value being returned by repr(obj) by providing a obj.__repr__() method which is called by repr(obj). |
|---|
| 232 | | @param obj The object to create a repr. String from. |
|---|
| 233 | | @return A representation of the object. |
|---|
| 234 | | **/ |
|---|
| 235 | | repr = function(obj){ |
|---|
| 236 | | if(obj == null){ |
|---|
| 237 | | return null; |
|---|
| 238 | | }else if(obj.__repr__){ |
|---|
| 239 | | return obj.__repr__(); |
|---|
| 240 | | }else{ |
|---|
| 241 | | switch(typeof obj){ |
|---|
| 242 | | case "string": |
|---|
| 243 | | obj = obj.replace(/\\/g,"\\\\").replace(/\"/g,"\\\"").replace(/\n/g, "\\n").replace(/\r/g,"\\r"); |
|---|
| 244 | | return '"' + obj + '"'; |
|---|
| 245 | | case "boolean":case"number": |
|---|
| 246 | | return "" + obj; |
|---|
| 247 | | case "object": |
|---|
| 248 | | var out = []; |
|---|
| 249 | | if(obj == null){ |
|---|
| 250 | | return "null"; |
|---|
| 251 | | }else if(obj instanceof Array){ |
|---|
| 252 | | for(var i=0;i<obj.length;i++){ |
|---|
| 253 | | out.push(repr(obj[i])); |
|---|
| 254 | | } |
|---|
| 255 | | return "[" + out.join(",") + "]"; |
|---|
| 256 | | }else if(obj instanceof Object){ |
|---|
| 257 | | for(var key in obj){ |
|---|
| 258 | | out.push(repr(key) + ":" + repr(obj[key])); |
|---|
| 259 | | } |
|---|
| 260 | | return "{" + out.join(",") + "}"; |
|---|
| 261 | | } |
|---|
| 262 | | } |
|---|
| 263 | | } |
|---|
| 264 | | }; |
|---|
| 265 | | |
|---|
| 266 | | /** |
|---|
| 267 | | Returns a unique id for an object. |
|---|
| 268 | | The same object will always return the same id. |
|---|
| 269 | | Most objects are id-able. The following steps are taken to find an id. |
|---|
| 270 | | If the obj has an __id__ property that id will be returned. (all jsolait classes have an __id__ property) |
|---|
| 271 | | If the obj has a __id__ method the return value of that method will be returned.(all jsolait objects have a __id__ method which sets an __id__ property) |
|---|
| 272 | | If the obj is a String the string prefixed with $ is returned. |
|---|
| 273 | | If the obj is a Number the number prefixed with a # is returned as a string. |
|---|
| 274 | | All other objects are not safely id-able and an exception is thrown unless forceId is true. In that case the object will get a unique __id__ property applied which is returned. |
|---|
| 275 | | |
|---|
| 276 | | @param obj The object to get the id for. |
|---|
| 277 | | @param forceId=false if true it forces id() to set an __id__ property onto a non id-able object, making it id-able. |
|---|
| 278 | | @return A String containing a id value for the obj. |
|---|
| 279 | | **/ |
|---|
| 280 | | id = function(obj, forceId){ |
|---|
| 281 | | switch(typeof obj.__id__){ |
|---|
| 282 | | |
|---|
| 283 | | case "undefined": |
|---|
| 284 | | if(obj instanceof String || typeof obj == 'string'){ |
|---|
| 285 | | return '$' + obj; |
|---|
| 286 | | }else if(obj instanceof Number || typeof obj == 'number'){ |
|---|
| 287 | | return '#' + obj; |
|---|
| 288 | | }else if(forceId){ |
|---|
| 289 | | obj.__id__ = '@' + (Class.__idcount__++); |
|---|
| 290 | | return obj.__id__; |
|---|
| 291 | | }else{ |
|---|
| 292 | | throw new jsolait.Exception('Objec cannot be IDed: %s'.format(obj)); |
|---|
| 293 | | } |
|---|
| 294 | | |
|---|
| 295 | | case "function": |
|---|
| 296 | | return obj.__id__(); |
|---|
| 297 | | |
|---|
| 298 | | default: //string |
|---|
| 299 | | return obj.__id__; |
|---|
| 300 | | } |
|---|
| 301 | | }; |
|---|
| 302 | | |
|---|
| 303 | | /** |
|---|
| 304 | | Returns a bound method. |
|---|
| 305 | | A bound method is a function which is bound to a specific object. |
|---|
| 306 | | Calling the bound method will call the given function with the this-object inside that function's scope being the object specified. |
|---|
| 307 | | |
|---|
| 308 | | @param obj The object the function should be bound to. |
|---|
| 309 | | @param fn A function object the obj will be bound to. |
|---|
| 310 | | @return A method which when run executes the function with the this-object being the obj specified. |
|---|
| 311 | | **/ |
|---|
| 312 | | bind = function(obj, fn){ |
|---|
| 313 | | return function(){ |
|---|
| 314 | | return fn.apply(obj, arguments); |
|---|
| 315 | | }; |
|---|
| 316 | | }; |
|---|
| 317 | | |
|---|
| 318 | | /** |
|---|
| 319 | | Returns if an object is an instance of a specified class or of a direct or indirect subclass thereof. |
|---|
| 320 | | |
|---|
| 321 | | It also works for traditional javascript inheritance(i.e. SomeClass=function(){}; SomeClass.prototype=new SuperClass(); ...). |
|---|
| 322 | | Internaly it first checks using instanceof if that fails it uses isinstance(obj.constructor, cls). |
|---|
| 323 | | There are some differences between using isinstance and instanceof. |
|---|
| 324 | | i.e. |
|---|
| 325 | | (123 instanceof Number) == false; |
|---|
| 326 | | isinstance(123, Number) == true; |
|---|
| 327 | | ('abc' instanceof String) == false; |
|---|
| 328 | | isinstance('abc', String) == true; |
|---|
| 329 | | |
|---|
| 330 | | @param obj The object to test. |
|---|
| 331 | | @param cls The class to test against. |
|---|
| 332 | | @return True if the object is an instance of cls. False otherwise. |
|---|
| 333 | | **/ |
|---|
| 334 | | isinstance=function(obj, cls){ |
|---|
| 335 | | if(obj instanceof cls){ |
|---|
| 336 | | return true; |
|---|
| 337 | | }else{ |
|---|
| 338 | | return issubclass(obj.constructor, cls); |
|---|
| 339 | | } |
|---|
| 340 | | }; |
|---|
| 341 | | |
|---|
| 342 | | /** |
|---|
| 343 | | Returns if a cls is a direct or indirect subclass of another. |
|---|
| 344 | | |
|---|
| 345 | | A class is always a subclass of itself and Object is the base for all classes. |
|---|
| 346 | | A class is a subclass of baseclass if it's prototype is an instance of baseclass. |
|---|
| 347 | | A class is a subclass of baseclass if any of it's __bases__ is a subclass of baseclass. |
|---|
| 348 | | If there are no __bases__ defined there is no way to findout about inheritance besides |
|---|
| 349 | | the prototype chain which was checked by instanceof before, so false is returned. |
|---|
| 350 | | |
|---|
| 351 | | @param cls The class to test. |
|---|
| 352 | | @param baseclass The assumed superclass. |
|---|
| 353 | | @return True if cls is a subclass of baseclass otherwise false. |
|---|
| 354 | | **/ |
|---|
| 355 | | issubclass=function(cls, baseclass){ |
|---|
| 356 | | if(baseclass === Object || cls===baseclass || (cls.prototype instanceof baseclass)){ |
|---|
| 357 | | return true; |
|---|
| 358 | | }else{ |
|---|
| 359 | | var bases = cls.__bases__; |
|---|
| 360 | | if(bases != null){ |
|---|
| 361 | | for(var i=0;i<bases.length;i++){ |
|---|
| 362 | | if(bases[i] === baseclass){ |
|---|
| 363 | | return true; |
|---|
| 364 | | } |
|---|
| 365 | | } |
|---|
| 366 | | for(var i=0;i<bases.length;i++){ |
|---|
| 367 | | if(issubclass(bases[i], baseclass)){ |
|---|
| 368 | | return true; |
|---|
| 369 | | } |
|---|
| 370 | | } |
|---|
| 371 | | } |
|---|
| 372 | | return false; |
|---|
| 373 | | } |
|---|
| 374 | | }; |
|---|
| 375 | | |
|---|
| 376 | | |
|---|
| 377 | | /** |
|---|
| 378 | | Creates a new module and registers it. |
|---|
| 379 | | @param name The name of the module. |
|---|
| 380 | | @param version The version of a module. |
|---|
| 381 | | @param moduleScope A function which is executed for module creation. |
|---|
| 382 | | As 1st parameter it will get the module variable. |
|---|
| 383 | | The imported modules(imports) will be passed to the moduleScope starting with the 2nd parameter. |
|---|
| 384 | | **/ |
|---|
| 385 | | Module=function(name, version, moduleScope){ |
|---|
| 386 | | var newMod = new Module.ModuleClass(name, version, Module.currentURI); |
|---|
| 387 | | |
|---|
| 388 | | try{//to execute the scope of the module |
|---|
| 389 | | moduleScope.call(newMod, newMod); |
|---|
| 390 | | }catch(e){ |
|---|
| 391 | | throw new Module.ModuleScopeExecFailed(newMod, e); |
|---|
| 392 | | } |
|---|
| 393 | | |
|---|
| 394 | | //set __name__ for methods and classes |
|---|
| 395 | | for(var n in newMod){ |
|---|
| 396 | | var obj = newMod[n]; |
|---|
| 397 | | if(typeof obj == 'function'){ |
|---|
| 398 | | obj.__name__ = n; |
|---|
| 399 | | } |
|---|
| 400 | | } |
|---|
| 401 | | |
|---|
| 402 | | jsolait.registerModule(newMod); |
|---|
| 403 | | return newMod; |
|---|
| 404 | | }; |
|---|
| 405 | | |
|---|
| 406 | | Module.ModuleClass=Class(function(publ){ |
|---|
| 407 | | publ.name; |
|---|
| 408 | | publ.version; |
|---|
| 409 | | publ.__sourceURI__; |
|---|
| 410 | | publ.Exception; |
|---|
| 411 | | |
|---|
| 412 | | publ.__init__=function(name,version,sourceURI){ |
|---|
| 413 | | this.name=name; |
|---|
| 414 | | this.version=version; |
|---|
| 415 | | this.__sourceURI__ = sourceURI; |
|---|
| 416 | | this.Exception = Class(Module.Exception, function(){}); |
|---|
| 417 | | this.Exception.prototype.module = this; |
|---|
| 418 | | }; |
|---|
| 419 | | |
|---|
| 420 | | publ.__str__=function(){ |
|---|
| 421 | | //todo:SVN adaption |
|---|
| 422 | | return "[module '%s' version: %s]".format(this.name, (this.version+'').replace(/\$Revision:\s(\d+) \$/, "rev.$1")); |
|---|
| 423 | | }; |
|---|
| 424 | | }); |
|---|
| 425 | | |
|---|
| 426 | | |
|---|
| 427 | | Module.toString=function(){ |
|---|
| 428 | | return "[object Module]"; |
|---|
| 429 | | }; |
|---|
| 430 | | |
|---|
| 431 | | Module.__createProto__=function(){ |
|---|
| 432 | | throw "Can't use Module as a base class."; |
|---|
| 433 | | }; |
|---|
| 434 | | |
|---|
| 435 | | |
|---|
| 436 | | /** |
|---|
| 437 | | Base class for all module-Exceptions. |
|---|
| 438 | | This class should not be instaciated directly but rather |
|---|
| 439 | | use the exception that is part of the module. |
|---|
| 440 | | **/ |
|---|
| 441 | | Module.Exception=Class("Exception", function(publ){ |
|---|
| 442 | | /** |
|---|
| 443 | | Initializes a new Exception. |
|---|
| 444 | | @param msg The error message for the user. |
|---|
| 445 | | @param trace=undefined The error causing this Exception if available. |
|---|
| 446 | | **/ |
|---|
| 447 | | publ.__init__=function(msg, trace){ |
|---|
| 448 | | this.name = this.constructor.__name__; |
|---|
| 449 | | this.message = ''+msg; |
|---|
| 450 | | this.trace = trace; |
|---|
| 451 | | }; |
|---|
| 452 | | |
|---|
| 453 | | publ.__str__=function(){ |
|---|
| 454 | | return this.toTraceString(); |
|---|
| 455 | | }; |
|---|
| 456 | | |
|---|
| 457 | | /** |
|---|
| 458 | | Returns the complete trace of the exception. |
|---|
| 459 | | @param indent=0 The indention to use for each line. |
|---|
| 460 | | @return The error trace. |
|---|
| 461 | | **/ |
|---|
| 462 | | publ.toTraceString=function(indent){ |
|---|
| 463 | | indent = indent==null ? 0 : indent; |
|---|
| 464 | | |
|---|
| 465 | | //todo:use constructor.__name__? |
|---|
| 466 | | var s="%s in %s:\n%s".format(this.name, this.module, this.message.indent(4)).indent(indent); |
|---|
| 467 | | if(this.trace){ |
|---|
| 468 | | if(this.trace.toTraceString){ |
|---|
| 469 | | s+=('\n\nbecause:\n'+ this.trace.toTraceString(indent + 4)); |
|---|
| 470 | | }else{ |
|---|
| 471 | | s+=(this.trace +'\n').indent(indent+4); |
|---|
| 472 | | } |
|---|
| 473 | | } |
|---|
| 474 | | return s; |
|---|
| 475 | | }; |
|---|
| 476 | | |
|---|
| 477 | | ///The name of the Exception. |
|---|
| 478 | | publ.name;//todo is that needed? |
|---|
| 479 | | ///The error message. |
|---|
| 480 | | publ.message; |
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| 481 | | ///The module the Exception belongs to. |
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| 482 | | publ.module="jsolait"; |
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| 483 | | ///The error which caused the Exception or undefined. |
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| 484 | | publ.trace; |
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| 485 | | }); |
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| 486 | | |
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| 487 | | /** |
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| 488 | | Thrown if a module scope could not be run. |
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| 489 | | **/ |
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| 490 | | Module.ModuleScopeExecFailed=Class("ModuleScopeExecFailed", Module.Exception, function(publ, supr){ |
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| 491 | | /** |
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| 492 | | Initializes a new ModuleScopeExecFailed Exception. |
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| 493 | | @param module The module. |
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| 494 | | @param trace The error cousing this Exception. |
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| 495 | | **/ |
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| 496 | | publ.__init__=function(module, trace){ |
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| 497 | | supr.__init__.call(this, "Failed to run the module scope for %s".format(module), trace); |
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| 498 | | this.failedModule = module; |
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| 499 | | }; |
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| 500 | | ///The module that could not be createed. |
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| 501 | | publ.module; |
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| 502 | | }); |
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| 503 | | |
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| 504 | | |
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| 505 | | /** |
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| 506 | | |
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| 507 | | @author Jan-Klaas Kollhof |
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| 508 | | @lastchangedby $LastChangedBy$ |
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| 509 | | @lastchangeddate $Date$ |
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| 510 | | **/ |
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| 511 | | Module("jsolait", "$Revision$", function(mod){ |
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| 512 | | jsolait=mod; |
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| 513 | | |
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| 514 | | mod.modules={}; |
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| 515 | | |
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| 516 | | ///The paths of the modules that come with jsolait. |
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| | 59 | ///The paths to the modules that come with jsolait. |
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| | 74 | mod.modules={}; |
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| | 75 | |
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| | 76 | /** |
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| | 77 | Returns a string representation of an object. |
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| | 78 | @param obj The object to return a string repr. of. |
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| | 79 | @return A string repr. the object. |
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| | 80 | **/ |
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| | 81 | var str = String; |
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| | 82 | |
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| | 83 | /** |
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| | 84 | Return a String containing a printable representation of an object which can be used with eval() to create an equal object. |
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| | 85 | Objects can cosutumize the the value being returned by repr(obj) by providing a obj.__repr__() method which is called by repr(obj). |
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| | 86 | @param obj The object to create a repr. String from. |
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| | 87 | @return A representation of the object. |
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| | 88 | **/ |
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| | 89 | var repr = function(obj){ |
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| | 90 | if(obj == null){ |
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| | 91 | return null; |
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| | 92 | }else if(obj.__repr__){ |
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| | 93 | return obj.__repr__(); |
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| | 94 | }else{ |
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| | 95 | switch(typeof obj){ |
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| | 96 | case "string": |
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| | 97 | obj = obj.replace(/\\/g,"\\\\").replace(/\"/g,"\\\"").replace(/\n/g, "\\n").replace(/\r/g,"\\r"); |
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| | 98 | return '"' + obj + '"'; |
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| | 99 | case "boolean":case"number": |
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| | 100 | return "" + obj; |
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| | 101 | case "object": |
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| | 102 | var out = []; |
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| | 103 | if(obj == null){ |
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| | 104 | return "null"; |
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| | 105 | }else if(obj instanceof Array){ |
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| | 106 | for(var i=0;i<obj.length;i++){ |
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| | 107 | out.push(repr(obj[i])); |
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| | 108 | } |
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| | 109 | return "[" + out.join(",") + "]"; |
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| | 110 | }else if(obj instanceof Object){ |
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| | 111 | for(var key in obj){ |
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| | 112 | out.push(repr(key) + ":" + repr(obj[key])); |
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| | 113 | } |
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| | 114 | return "{" + out.join(",") + "}"; |
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| | 115 | } |
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| | 116 | } |
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| | 117 | } |
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| | 118 | }; |
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| | 119 | |
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| | 120 | /** |
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| | 121 | Returns a unique id for an object. |
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| | 122 | The same object will always return the same id. |
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| | 123 | Most objects are id-able. The following steps are taken to find an id. |
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| | 124 | If the obj has an __id__ property that id will be returned. (all jsolait classes have an __id__ property) |
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| | 125 | If the obj has a __id__ method the return value of that method will be returned.(all jsolait objects have a __id__ method which sets an __id__ property) |
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| | 126 | If the obj is a String the string prefixed with $ is returned. |
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| | 127 | If the obj is a Number the number prefixed with a # is returned as a string. |
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| | 128 | All other objects are not safely id-able and an exception is thrown unless forceId is true. In that case the object will get a unique __id__ property applied which is returned. |
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| | 129 | |
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| | 130 | @param obj The object to get the id for. |
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| | 131 | @param forceId=false if true it forces id() to set an __id__ property onto a non id-able object, making it id-able. |
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| | 132 | @return A String containing a id value for the obj. |
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| | 133 | **/ |
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| | 134 | var id = function(obj, forceId){ |
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| | 135 | switch(typeof obj.__id__){ |
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| | 136 | |
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| | 137 | case "undefined": |
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| | 138 | if(obj instanceof String || typeof obj == 'string'){ |
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| | 139 | return '$' + obj; |
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| | 140 | }else if(obj instanceof Number || typeof obj == 'number'){ |
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| | 141 | return '#' + obj; |
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| | 142 | }else if(forceId){ |
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| | 143 | obj.__id__ = '@' + (Class.__idcount__++); |
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| | 144 | return obj.__id__; |
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| | 145 | }else{ |
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| | 146 | throw new mod.Exception('Objec cannot be IDed: %s'.format(obj)); |
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| | 147 | } |
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| | 148 | |
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| | 149 | case "function": |
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| | 150 | return obj.__id__(); |
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| | 151 | |
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| | 152 | default: //string |
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| | 153 | return obj.__id__; |
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| | 154 | } |
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| | 155 | }; |
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| | 156 | |
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| | 157 | /** |
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| | 158 | Returns a bound method. |
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| | 159 | A bound method is a function which is bound to a specific object. |
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| | 160 | Calling the bound method will call the given function with the this-object inside that function's scope being the object specified. |
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| | 161 | |
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| | 162 | @param obj The object the function should be bound to. |
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| | 163 | @param fn A function object the obj will be bound to. |
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| | 164 | @return A method which when run executes the function with the this-object being the obj specified. |
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| | 165 | **/ |
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| | 166 | var bind = function(obj, fn){ |
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| | 167 | return function(){ |
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| | 168 | return fn.apply(obj, arguments); |
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| | 169 | }; |
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| | 170 | }; |
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| | 171 | |
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| | 172 | /** |
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| | 173 | Returns if an object is an instance of a specified class or of a direct or indirect subclass thereof. |
|---|
| | 174 | |
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| | 175 | It also works for traditional javascript inheritance(i.e. SomeClass=function(){}; SomeClass.prototype=new SuperClass(); ...). |
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| | 176 | Internaly it first checks using instanceof if that fails it uses isinstance(obj.constructor, cls). |
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| | 177 | There are some differences between using isinstance and instanceof. |
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| | 178 | i.e. |
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| | 179 | (123 instanceof Number) == false; |
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| | 180 | isinstance(123, Number) == true; |
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| | 181 | ('abc' instanceof String) == false; |
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| | 182 | isinstance('abc', String) == true; |
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| | 183 | |
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| | 184 | @param obj The object to test. |
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| | 185 | @param cls The class to test against. |
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| | 186 | @return True if the object is an instance of cls. False otherwise. |
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| | 187 | **/ |
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| | 188 | var isinstance=function(obj, cls){ |
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| | 189 | if(obj instanceof cls){ |
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| | 190 | return true; |
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| | 191 | }else{ |
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| | 192 | return issubclass(obj.constructor, cls); |
|---|
| | 193 | } |
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| | 194 | }; |
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| | 195 | |
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| | 196 | /** |
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| | 197 | Returns if a cls is a direct or indirect subclass of another. |
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| | 198 | |
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| | 199 | A class is always a subclass of itself and Object is the base for all classes. |
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| | 200 | A class is a subclass of baseclass if it's prototype is an instance of baseclass. |
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| | 201 | A class is a subclass of baseclass if any of it's __bases__ is a subclass of baseclass. |
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| | 202 | If there are no __bases__ defined there is no way to findout about inheritance besides |
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| | 203 | the prototype chain which was checked by instanceof before, so false is returned. |
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| | 204 | |
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| | 205 | @param cls The class to test. |
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| | 206 | @param baseclass The assumed superclass. |
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| | 207 | @return True if cls is a subclass of baseclass otherwise false. |
|---|
| | 208 | **/ |
|---|
| | 209 | var issubclass=function(cls, baseclass){ |
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| | 210 | if(baseclass === Object || cls===baseclass || (cls.prototype instanceof baseclass)){ |
|---|
| | 211 | return true; |
|---|
| | 212 | }else{ |
|---|
| | 213 | var bases = cls.__bases__; |
|---|
| | 214 | if(bases != null){ |
|---|
| | 215 | for(var i=0;i<bases.length;i++){ |
|---|
| | 216 | if(bases[i] === baseclass){ |
|---|
| | 217 | return true; |
|---|
| | 218 | } |
|---|
| | 219 | } |
|---|
| | 220 | for(var i=0;i<bases.length;i++){ |
|---|
| | 221 | if(issubclass(bases[i], baseclass)){ |
|---|
| | 222 | return true; |
|---|
| | 223 | } |
|---|
| | 224 | } |
|---|
| | 225 | } |
|---|
| | 226 | return false; |
|---|
| | 227 | } |
|---|
| | 228 | }; |
|---|
| | 229 | |
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| | 230 | /** |
|---|
| | 231 | Creates a new class object which inherits from superClass. |
|---|
| | 232 | @param name="anonymous" The name of the new class. |
|---|
| | 233 | If the created class is a public member of a module then |
|---|
| | 234 | the __name__ property of that class is automatically set by Module(). |
|---|
| | 235 | @param base1 * The base classes (not an array but one argument per base class). |
|---|
| | 236 | @param classScope(-1) A function which is executed for class construction. |
|---|
| | 237 | As 1st parameter it will get the new class' protptype for |
|---|
| | 238 | overrideing or extending the super class. As 2nd parameter it will get |
|---|
| | 239 | the super class' wrapper for calling inherited methods. |
|---|
| | 240 | **/ |
|---|
| | 241 | var Class=function(name, base1, classScope){ |
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| | 242 | var args=[]; |
|---|
| | 243 | for(var i=0;i<arguments.length;i++){ |
|---|
| | 244 | args[i] = arguments[i]; |
|---|
| | 245 | } |
|---|
| | 246 | |
|---|
| | 247 | classScope = args.pop(); |
|---|
| | 248 | var classID = Class.__idcount__++; |
|---|
| | 249 | |
|---|
| | 250 | if((args.length>0) && (typeof args[0] =='string')){ |
|---|
| | 251 | name=args.shift(); |
|---|
| | 252 | }else{ |
|---|
| | 253 | name="anonymous" + classID; |
|---|
| | 254 | } |
|---|
| | 255 | |
|---|
| | 256 | var bases = args; |
|---|
| | 257 | |
|---|
| | 258 | //set up the 'public static' fields of the class |
|---|
| | 259 | var __class__={__isArray__ : false, |
|---|
| | 260 | __name__ : name, |
|---|
| | 261 | __bases__: bases, |
|---|
| | 262 | __id__: '@' + classID, |
|---|
| | 263 | __str__ : function(){ |
|---|
| | 264 | return "[class %s]".format(this.__name__); |
|---|
| | 265 | }, |
|---|
| | 266 | __create__:function(initArgs){ |
|---|
| | 267 | var obj = new this(Class); |
|---|
| | 268 | if(obj.__init__){ |
|---|
| | 269 | obj.__init__.apply(obj, initArgs); |
|---|
| | 270 | } |
|---|
| | 271 | return obj; |
|---|
| | 272 | } |
|---|
| | 273 | }; |
|---|
| | 274 | |
|---|
| | 275 | var baseProtos=[];//stores the prototypes of all the base classes |
|---|
| | 276 | var proto; //the prototype to use for the new class |
|---|
| | 277 | if(bases.length==0){//use Object as base |
|---|
| | 278 | proto={}; |
|---|
| | 279 | proto.__str__ = function(){ |
|---|
| | 280 | return "[%s %s]".format(this.__class__.prototype.__call__ === undefined ? 'object' : 'callable', this.__class__.__name__); |
|---|
| | 281 | }; |
|---|
| | 282 | __class__.__bases__=[Object]; |
|---|
| | 283 | }else{ //inherit from all base classes |
|---|
| | 284 | var baseProto; |
|---|
| | 285 | for(var i=0;i<bases.length;i++){ |
|---|
| | 286 | var baseClass = bases[i]; |
|---|
| | 287 | //remember the base prototypes |
|---|
| | 288 | baseProtos.push(baseClass.prototype); |
|---|
| | 289 | if(baseClass.__createProto__ !== undefined){ |
|---|
| | 290 | baseProto = baseClass.__createProto__(bases); |
|---|
| | 291 | }else{ |
|---|
| | 292 | baseProto = new baseClass(Class); |
|---|
| | 293 | } |
|---|
| | 294 | __class__.__isArray__ = __class__.__isArray__ || baseClass.__isArray__; |
|---|
| | 295 | |
|---|
| | 296 | if(i==0){//for the first base class just use it's proto as the final proto |
|---|
| | 297 | proto = baseProto; |
|---|
| | 298 | }else{//for all others extend(do not overwrite) the final proto with the properties in the baseProto |
|---|
| | 299 | for(var key in baseProto){ |
|---|
| | 300 | if(proto[key] === undefined){ |
|---|
| | 301 | proto[key] = baseProto[key]; |
|---|
| | 302 | } |
|---|
| | 303 | } |
|---|
| | 304 | } |
|---|
| | 305 | //extend the new class' static interface |
|---|
| | 306 | //todo: any props that should not be copied |
|---|
| | 307 | for(var key in baseClass){ |
|---|
| | 308 | if((key != 'prototype') && (__class__[key] === undefined)){ |
|---|
| | 309 | __class__[key] = baseClass[key]; |
|---|
| | 310 | } |
|---|
| | 311 | } |
|---|
| | 312 | } |
|---|
| | 313 | } |
|---|
| | 314 | //make sure all jsolait objects have an id method |
|---|
| | 315 | if(proto.__id__ === undefined){ |
|---|
| | 316 | proto.__id__=function(){ |
|---|
| | 317 | this.__id__ = '@' + (Class.__idcount__++); |
|---|
| | 318 | return this.__id__; |
|---|
| | 319 | }; |
|---|
| | 320 | } |
|---|
| | 321 | proto.__class__=__class__; |
|---|
| | 322 | |
|---|
| | 323 | //run the class setup function provided as classScope |
|---|
| | 324 | var privId = '__priv__' + __class__.__id__; |
|---|
| | 325 | classScope.apply(this,[proto, privId].concat(baseProtos)); |
|---|
| | 326 | |
|---|
| | 327 | //make sure the toString points to __str__, this will make overwriting __str__ after object construction impossible (todo ?) |
|---|
| | 328 | //but will be faster than having toString call __str__, also overwriting methods unless they are ment to be overridden is not cool anyways. |
|---|
| | 329 | proto.toString=proto.__str__; |
|---|
| | 330 | |
|---|
| | 331 | //allthough a single constructor would suffice for generating normal objects, Arrays and callables, |
|---|
| | 332 | //we use 3 different ones. This will minimize the code inside the constructor and therefore |
|---|
| | 333 | //minimize object construction time |
|---|
| | 334 | if(proto.__call__){ |
|---|
| | 335 | //if the callable interface is implemented we need a class constructor |
|---|
| | 336 | //which generates a function upon construction |
|---|
| | 337 | var NewClass = function(calledBy){ |
|---|
| | 338 | if(calledBy !== Class){ |
|---|
| | 339 | var rslt = function(){ |
|---|
| | 340 | return rslt.__call__.apply(rslt, arguments); |
|---|
| | 341 | }; |
|---|
| | 342 | |
|---|
| | 343 | //this will only work for the current class but not create any priv objects for any base class |
|---|
| | 344 | var proto=arguments.callee.prototype; |
|---|
| | 345 | for(var n in proto){ |
|---|
| | 346 | rslt[n] = proto[n]; |
|---|
| | 347 | } |
|---|
| | 348 | rslt.constructor = proto.__class__; |
|---|
| | 349 | rslt.toString = proto.__str__; |
|---|
| | 350 | if(rslt.__init__){ |
|---|
| | 351 | rslt.__init__.apply(rslt, arguments); |
|---|
| | 352 | } |
|---|
| | 353 | return rslt; |
|---|
| | 354 | } |
|---|
| | 355 | }; |
|---|
| | 356 | }else if(__class__.__isArray__){ |
|---|
| | 357 | //Since we cannot inherit from Array directly we take the same approach as with the callable above |
|---|
| | 358 | //and just have a constructor which creates an Array |
|---|
| | 359 | var NewClass = function(calledBy){ |
|---|
| | 360 | if(calledBy !== Class){ |
|---|
| | 361 | rslt=[]; |
|---|
| | 362 | var proto=arguments.callee.prototype; |
|---|
| | 363 | for(var n in proto){ |
|---|
| | 364 | rslt[n] = proto[n]; |
|---|
| | 365 | } |
|---|
| | 366 | rslt.constructor = proto.__class__; |
|---|
| | 367 | rslt.toString = proto.__str__; |
|---|
| | 368 | if(rslt.__init__){ |
|---|
| | 369 | rslt.__init__.apply(rslt, arguments); |
|---|
| | 370 | }else{//implement Array's default behavior |
|---|
| | 371 | if(arguments.length==1){ |
|---|
| | 372 | rslt.length=arguments[0]; |
|---|
| | 373 | }else{ |
|---|
| | 374 | for(var i=0;i<arguments.length;i++){ |
|---|
| | 375 | rslt.push(arguments[i]); |
|---|
| | 376 | } |
|---|
| | 377 | } |
|---|
| | 378 | } |
|---|
| | 379 | return rslt; |
|---|
| | 380 | } |
|---|
| | 381 | }; |
|---|
| | 382 | }else{ |
|---|
| | 383 | //this is a 'normal' object constructor which does nothing but call the __init__ method |
|---|
| | 384 | //unless it does not exsit or the constructor was used for prototyping |
|---|
| | 385 | var NewClass = function(calledBy){ |
|---|
| | 386 | if(calledBy !== Class){ |
|---|
| | 387 | if(this.__init__){ |
|---|
| < |
|---|