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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 /** | |
| 6 * Helpers for lazy static initialization. | |
| 7 */ | |
| 8 var static$uninitialized = {}; | |
| 9 var static$initializing = {}; | |
| 10 | |
| 11 function $maybeBindRtt(fun, fRtt, thisObj) { | |
| 12 if (fRtt) { | |
| 13 fun.$lookupRTT = function() { | |
| 14 return fRtt.call(thisObj); | |
| 15 } | |
| 16 } | |
| 17 } | |
| 18 | |
| 19 // Optimized versions of closure bindings. | |
| 20 // Name convention: $bind<number-of-scopes>_<number-of-arguments>(fn, this, scop
es, args) | |
| 21 function $bind0_0(fn, fRtt, thisObj) { | |
| 22 var fun = function() { | |
| 23 return fn.call(thisObj); | |
| 24 } | |
| 25 $maybeBindRtt(fun, fRtt, thisObj); | |
| 26 return fun; | |
| 27 } | |
| 28 function $bind0_1(fn, fRtt, thisObj) { | |
| 29 var fun = function(arg) { | |
| 30 return fn.call(thisObj, arg); | |
| 31 } | |
| 32 $maybeBindRtt(fun, fRtt, thisObj); | |
| 33 return fun; | |
| 34 } | |
| 35 function $bind0_2(fn, fRtt, thisObj) { | |
| 36 var fun = function(arg1, arg2) { | |
| 37 return fn.call(thisObj, arg1, arg2); | |
| 38 } | |
| 39 $maybeBindRtt(fun, fRtt, thisObj); | |
| 40 return fun; | |
| 41 } | |
| 42 function $bind0_3(fn, fRtt, thisObj) { | |
| 43 var fun = function(arg1, arg2, arg3) { | |
| 44 return fn.call(thisObj, arg1, arg2, arg3); | |
| 45 } | |
| 46 $maybeBindRtt(fun, fRtt, thisObj); | |
| 47 return fun; | |
| 48 } | |
| 49 function $bind0_4(fn, fRtt, thisObj) { | |
| 50 var fun = function(arg1, arg2, arg3, arg4) { | |
| 51 return fn.call(thisObj, arg1, arg2, arg3, arg4); | |
| 52 } | |
| 53 $maybeBindRtt(fun, fRtt, thisObj); | |
| 54 return fun; | |
| 55 } | |
| 56 function $bind0_5(fn, fRtt, thisObj) { | |
| 57 var fun = function(arg1, arg2, arg3, arg4, arg5) { | |
| 58 return fn.call(thisObj, arg1, arg2, arg3, arg4, arg5); | |
| 59 } | |
| 60 $maybeBindRtt(fun, fRtt, thisObj); | |
| 61 return fun; | |
| 62 } | |
| 63 | |
| 64 function $bind1_0(fn, fRtt, thisObj, scope) { | |
| 65 var fun = function() { | |
| 66 return fn.call(thisObj, scope); | |
| 67 } | |
| 68 $maybeBindRtt(fun, fRtt, thisObj); | |
| 69 return fun; | |
| 70 } | |
| 71 function $bind1_1(fn, fRtt, thisObj, scope) { | |
| 72 var fun = function(arg) { | |
| 73 return fn.call(thisObj, scope, arg); | |
| 74 } | |
| 75 $maybeBindRtt(fun, fRtt, thisObj); | |
| 76 return fun; | |
| 77 } | |
| 78 function $bind1_2(fn, fRtt, thisObj, scope) { | |
| 79 var fun = function(arg1, arg2) { | |
| 80 return fn.call(thisObj, scope, arg1, arg2); | |
| 81 } | |
| 82 $maybeBindRtt(fun, fRtt, thisObj); | |
| 83 return fun; | |
| 84 } | |
| 85 function $bind1_3(fn, fRtt, thisObj, scope) { | |
| 86 var fun = function(arg1, arg2, arg3) { | |
| 87 return fn.call(thisObj, scope, arg1, arg2, arg3); | |
| 88 } | |
| 89 $maybeBindRtt(fun, fRtt, thisObj); | |
| 90 return fun; | |
| 91 } | |
| 92 function $bind1_4(fn, fRtt, thisObj, scope) { | |
| 93 var fun = function(arg1, arg2, arg3, arg4) { | |
| 94 return fn.call(thisObj, scope, arg1, arg2, arg3, arg4); | |
| 95 } | |
| 96 $maybeBindRtt(fun, fRtt, thisObj); | |
| 97 return fun; | |
| 98 } | |
| 99 function $bind1_5(fn, fRtt, thisObj, scope) { | |
| 100 var fun = function(arg1, arg2, arg3, arg4, arg5) { | |
| 101 return fn.call(thisObj, scope, arg1, arg2, arg3, arg4, arg5); | |
| 102 } | |
| 103 $maybeBindRtt(fun, fRtt, thisObj); | |
| 104 return fun; | |
| 105 } | |
| 106 | |
| 107 function $bind2_0(fn, fRtt, thisObj, scope1, scope2) { | |
| 108 var fun = function() { | |
| 109 return fn.call(thisObj, scope1, scope2); | |
| 110 } | |
| 111 $maybeBindRtt(fun, fRtt, thisObj); | |
| 112 return fun; | |
| 113 } | |
| 114 function $bind2_1(fn, fRtt, thisObj, scope1, scope2) { | |
| 115 var fun = function(arg) { | |
| 116 return fn.call(thisObj, scope1, scope2, arg); | |
| 117 } | |
| 118 $maybeBindRtt(fun, fRtt, thisObj); | |
| 119 return fun; | |
| 120 } | |
| 121 function $bind2_2(fn, fRtt, thisObj, scope1, scope2) { | |
| 122 var fun = function(arg1, arg2) { | |
| 123 return fn.call(thisObj, scope1, scope2, arg1, arg2); | |
| 124 } | |
| 125 $maybeBindRtt(fun, fRtt, thisObj); | |
| 126 return fun; | |
| 127 } | |
| 128 function $bind2_3(fn, fRtt, thisObj, scope1, scope2) { | |
| 129 var fun = function(arg1, arg2, arg3) { | |
| 130 return fn.call(thisObj, scope1, scope2, arg1, arg2, arg3); | |
| 131 } | |
| 132 $maybeBindRtt(fun, fRtt, thisObj); | |
| 133 return fun; | |
| 134 } | |
| 135 function $bind2_4(fn, fRtt, thisObj, scope1, scope2) { | |
| 136 var fun = function(arg1, arg2, arg3, arg4) { | |
| 137 return fn.call(thisObj, scope1, scope2, arg1, arg2, arg3, arg4); | |
| 138 } | |
| 139 $maybeBindRtt(fun, fRtt, thisObj); | |
| 140 return fun; | |
| 141 } | |
| 142 function $bind2_5(fn, fRtt, thisObj, scope1, scope2) { | |
| 143 var fun = function(arg1, arg2, arg3, arg4, arg5) { | |
| 144 return fn.call(thisObj, scope1, scope2, arg1, arg2, arg3, arg4, arg5); | |
| 145 } | |
| 146 $maybeBindRtt(fun, fRtt, thisObj); | |
| 147 return fun; | |
| 148 } | |
| 149 | |
| 150 function $bind3_0(fn, fRtt, thisObj, scope1, scope2, scope3) { | |
| 151 var fun = function() { | |
| 152 return fn.call(thisObj, scope1, scope2, scope3); | |
| 153 } | |
| 154 $maybeBindRtt(fun, fRtt, thisObj); | |
| 155 return fun; | |
| 156 } | |
| 157 function $bind3_1(fn, fRtt, thisObj, scope1, scope2, scope3) { | |
| 158 var fun = function(arg) { | |
| 159 return fn.call(thisObj, scope1, scope2, scope3, arg); | |
| 160 } | |
| 161 $maybeBindRtt(fun, fRtt, thisObj); | |
| 162 return fun; | |
| 163 } | |
| 164 function $bind3_2(fn, fRtt, thisObj, scope1, scope2, scope3) { | |
| 165 var fun = function(arg1, arg2) { | |
| 166 return fn.call(thisObj, scope1, scope2, scope3, arg1, arg2); | |
| 167 } | |
| 168 $maybeBindRtt(fun, fRtt, thisObj); | |
| 169 return fun; | |
| 170 } | |
| 171 function $bind3_3(fn, fRtt, thisObj, scope1, scope2, scope3) { | |
| 172 var fun = function(arg1, arg2, arg3) { | |
| 173 return fn.call(thisObj, scope1, scope2, scope3, arg1, arg2, arg3); | |
| 174 } | |
| 175 $maybeBindRtt(fun, fRtt, thisObj); | |
| 176 return fun; | |
| 177 } | |
| 178 function $bind3_4(fn, fRtt, thisObj, scope1, scope2, scope3) { | |
| 179 var fun = function(arg1, arg2, arg3, arg4) { | |
| 180 return fn.call(thisObj, scope1, scope2, scope3, arg1, arg2, arg3, arg4); | |
| 181 } | |
| 182 $maybeBindRtt(fun, fRtt, thisObj); | |
| 183 return fun; | |
| 184 } | |
| 185 function $bind3_5(fn, fRtt, thisObj, scope1, scope2, scope3) { | |
| 186 var fun = function(arg1, arg2, arg3, arg4, arg5) { | |
| 187 return fn.call(thisObj, scope1, scope2, scope3, arg1, arg2, arg3, arg4, arg5
); | |
| 188 } | |
| 189 $maybeBindRtt(fun, fRtt, thisObj); | |
| 190 return fun; | |
| 191 } | |
| 192 | |
| 193 /** | |
| 194 * Implements extends for dart classes on javascript prototypes. | |
| 195 * @param {Function} child | |
| 196 * @param {Function} parent | |
| 197 */ | |
| 198 function $inherits(child, parent) { | |
| 199 if (child.prototype.__proto__) { | |
| 200 child.prototype.__proto__ = parent.prototype; | |
| 201 } else { | |
| 202 function tmp() {}; | |
| 203 tmp.prototype = parent.prototype; | |
| 204 child.prototype = new tmp(); | |
| 205 child.prototype.constructor = child; | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 /** | |
| 210 * @param {Function} fn | |
| 211 * @param {Function=} fRtt | |
| 212 * @param {Object|undefined} thisObj | |
| 213 * @param {...*} var_args | |
| 214 */ | |
| 215 function $bind(fn, fRtt, thisObj, var_args) { | |
| 216 var func; | |
| 217 if (arguments.length > 3) { | |
| 218 var boundArgs = Array.prototype.slice.call(arguments, 3); | |
| 219 func = function() { | |
| 220 // Prepend the bound arguments to the current arguments. | |
| 221 var newArgs = Array.prototype.slice.call(arguments); | |
| 222 Array.prototype.unshift.apply(newArgs, boundArgs); | |
| 223 return fn.apply(thisObj, newArgs); | |
| 224 }; | |
| 225 } else { | |
| 226 func = function() { | |
| 227 return fn.apply(thisObj, arguments); | |
| 228 }; | |
| 229 } | |
| 230 if(fRtt) { | |
| 231 func.$lookupRTT = function() { | |
| 232 return fRtt.apply(thisObj, arguments); | |
| 233 }; | |
| 234 } | |
| 235 return func; | |
| 236 } | |
| 237 | |
| 238 /** | |
| 239 * Dart null object that should be used by JS implementation to test for | |
| 240 * Dart null. | |
| 241 * | |
| 242 * TODO(ngeoffray): update dartc to generate this variable instead of | |
| 243 * undefined. | |
| 244 * @const | |
| 245 */ | |
| 246 var $Dart$Null = void 0; | |
| 247 | |
| 248 function assert(expr) { | |
| 249 var val = typeof(expr) == 'function' ? $dartcall(expr, []) : expr; | |
| 250 if (val !== true) { | |
| 251 $Dart$ThrowException(native_ExceptionHelper_createAssertionError()); | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 function BIT_OR$operator(val1, val2) { | |
| 256 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 257 ? val1 | val2 | |
| 258 : val1.BIT_OR$operator(val2); | |
| 259 } | |
| 260 | |
| 261 function BIT_XOR$operator(val1, val2) { | |
| 262 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 263 ? val1 ^ val2 | |
| 264 : val1.BIT_XOR$operator(val2); | |
| 265 } | |
| 266 | |
| 267 function BIT_AND$operator(val1, val2) { | |
| 268 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 269 ? val1 & val2 | |
| 270 : val1.BIT_AND$operator(val2); | |
| 271 } | |
| 272 | |
| 273 function BIT_NOT$operator(val) { | |
| 274 return (typeof(val) == 'number') ? ~val : val.BIT_NOT$operator(); | |
| 275 } | |
| 276 | |
| 277 function SHL$operator(val1, val2) { | |
| 278 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 279 ? val1 << val2 | |
| 280 : val1.SHL$operator(val2); | |
| 281 } | |
| 282 | |
| 283 function SAR$operator(val1, val2) { | |
| 284 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 285 ? val1 >> val2 | |
| 286 : val1.SAR$operator(val2); | |
| 287 } | |
| 288 | |
| 289 function SHR$operator(val1, val2) { | |
| 290 return val1.SHR$operator(val2); | |
| 291 } | |
| 292 | |
| 293 function ADD$operator(val1, val2) { | |
| 294 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 295 ? val1 + val2 | |
| 296 : val1.ADD$operator(val2); | |
| 297 } | |
| 298 | |
| 299 function SUB$operator(val1, val2) { | |
| 300 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 301 ? val1 - val2 | |
| 302 : val1.SUB$operator(val2); | |
| 303 } | |
| 304 | |
| 305 function MUL$operator(val1, val2) { | |
| 306 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 307 ? val1 * val2 | |
| 308 : val1.MUL$operator(val2); | |
| 309 } | |
| 310 | |
| 311 function DIV$operator(val1, val2) { | |
| 312 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 313 ? val1 / val2 | |
| 314 : val1.DIV$operator(val2); | |
| 315 } | |
| 316 | |
| 317 function MOD$operator(val1, val2) { | |
| 318 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 319 ? number$euclideanModulo(val1, val2) | |
| 320 : val1.MOD$operator(val2); | |
| 321 } | |
| 322 | |
| 323 function TRUNC$operator(val1, val2) { | |
| 324 if (typeof(val1) == 'number' && typeof(val2) == 'number') { | |
| 325 var tmp = val1 / val2; | |
| 326 return (tmp < 0) ? Math.ceil(tmp) : Math.floor(tmp); | |
| 327 } else { | |
| 328 return val1.TRUNC$operator(val2); | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 function negate$operator(val) { | |
| 333 return (typeof(val) == 'number') ? -val : val.negate$operator(); | |
| 334 } | |
| 335 | |
| 336 function EQ$operator(val1, val2) { | |
| 337 return (typeof val1 != 'object') | |
| 338 ? val1 === val2 | |
| 339 : val1.EQ$operator(val2); | |
| 340 } | |
| 341 | |
| 342 function NE$operator(val1, val2) { | |
| 343 return (typeof val1 != 'object') | |
| 344 ? val1 !== val2 | |
| 345 : !val1.EQ$operator(val2); | |
| 346 } | |
| 347 | |
| 348 function LT$operator(val1, val2) { | |
| 349 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 350 ? val1 < val2 | |
| 351 : val1.LT$operator(val2); | |
| 352 } | |
| 353 | |
| 354 function GT$operator(val1, val2) { | |
| 355 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 356 ? val1 > val2 | |
| 357 : val1.GT$operator(val2); | |
| 358 } | |
| 359 | |
| 360 function LTE$operator(val1, val2) { | |
| 361 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 362 ? val1 <= val2 | |
| 363 : val1.LTE$operator(val2); | |
| 364 } | |
| 365 | |
| 366 function GTE$operator(val1, val2) { | |
| 367 return (typeof(val1) == 'number' && typeof(val2) == 'number') | |
| 368 ? val1 >= val2 | |
| 369 : val1.GTE$operator(val2); | |
| 370 } | |
| 371 | |
| 372 // The following operator-functions are not called from Dart-generated code, but | |
| 373 // only from handwritten JS code. | |
| 374 function INDEX$operator(obj, index) { | |
| 375 return obj.INDEX$operator(index); | |
| 376 } | |
| 377 | |
| 378 function ASSIGN_INDEX$operator(obj, index, newVal) { | |
| 379 obj.ASSIGN_INDEX$operator(index, newVal); | |
| 380 } | |
| 381 | |
| 382 function $Dart$ThrowException(e) { | |
| 383 // If e is not a value, we can use V8's captureStackTrace utility method. | |
| 384 if (e && (typeof e == "object") && Error.captureStackTrace) { | |
| 385 Error.captureStackTrace(e); | |
| 386 } | |
| 387 throw e; | |
| 388 } | |
| 389 | |
| 390 function $toString(x) { | |
| 391 return native__StringJsUtil_toDartString(x); | |
| 392 } | |
| 393 | |
| 394 // Translate a JavaScript exception to a Dart exception | |
| 395 // TODO(zundel): cross browser support. This is Chrome specific. | |
| 396 function $transformBrowserException(e) { | |
| 397 if (e instanceof TypeError) { | |
| 398 switch(e.type) { | |
| 399 case "property_not_function": | |
| 400 case "called_non_callable": | |
| 401 if (e.arguments[0] == "undefined") { | |
| 402 return native_ExceptionHelper_createNullPointerException(); | |
| 403 } | |
| 404 return native_ExceptionHelper_createObjectNotClosureException(); | |
| 405 case "non_object_property_call": | |
| 406 case "non_object_property_load": | |
| 407 return native_ExceptionHelper_createNullPointerException(); | |
| 408 case "undefined_method": | |
| 409 if (e.arguments[0] == "call" || e.arguments[0] == "apply") { | |
| 410 return native_ExceptionHelper_createObjectNotClosureException(); | |
| 411 } | |
| 412 return native_ExceptionHelper_createNoSuchMethodException( | |
| 413 "", e.arguments[0], []); | |
| 414 } | |
| 415 } | |
| 416 return e; | |
| 417 } | |
| 418 | |
| 419 // Throws a NoSuchMethodException (used by named-parameter trampolines). | |
| 420 function $nsme() { | |
| 421 var e = native_ExceptionHelper_createNoSuchMethodException("", "", []); | |
| 422 $Dart$ThrowException(e); | |
| 423 } | |
| 424 | |
| 425 // Throws a NoSuchMethodException (used when instantiating via a non-existent cl
ass or ctor). | |
| 426 function $nsme2(name, args) { | |
| 427 var e = native_ExceptionHelper_createNoSuchMethodException(name, name, args); | |
| 428 $Dart$ThrowException(e); | |
| 429 } | |
| 430 | |
| 431 // Shared named-argument object used by call-sites with no named arguments. | |
| 432 /** @const */ | |
| 433 var $noargs = {count:0}; | |
| 434 | |
| 435 // Used for invoking dart functions from js. | |
| 436 function $dartcall(fn, args) { | |
| 437 args.unshift(args.length, $noargs); | |
| 438 fn.apply(null, args); | |
| 439 } | |
| 440 | |
| 441 // | |
| 442 // The following methods are used to create canonical constants. | |
| 443 // | |
| 444 | |
| 445 function native_ConstHelper_getConstId(o) { | |
| 446 return $dart_const_id(o); | |
| 447 } | |
| 448 | |
| 449 // compile time const canonicalization helpers | |
| 450 function $dart_const_id(o) { | |
| 451 if (o === $Dart$Null) return ""; | |
| 452 if (typeof o === "number") return "n" + o; | |
| 453 if (typeof o === "boolean") return "b" + ((o) ? 1 : 0); | |
| 454 if (typeof o === "string") return $dart_const_string_id(o); | |
| 455 if (typeof o === "function") throw "a function is not a constant expression"; | |
| 456 var result = o.$dartConstId; | |
| 457 if (result === undefined) { | |
| 458 throw "internal error: reference to non-canonical constant"; | |
| 459 } | |
| 460 return result; | |
| 461 } | |
| 462 | |
| 463 // Array ids have the form: "aID,ID,ID" | |
| 464 function $dart_const_array_id(o) { | |
| 465 var ids = []; | |
| 466 for (var i=o.length-1; i>=0; i--) { | |
| 467 ids.push($dart_const_id(o[i])); | |
| 468 } | |
| 469 return "a" + ids.join(","); | |
| 470 } | |
| 471 | |
| 472 var $CONST_MAP_PREFIX = ":" | |
| 473 | |
| 474 // String ids have the form "sID" | |
| 475 var $string_id = 0; | |
| 476 var $string_id_cache = {}; | |
| 477 function $dart_const_string_id(s) { | |
| 478 var key = $CONST_MAP_PREFIX + s; | |
| 479 var id = $string_id_cache[key]; | |
| 480 if (!id) { | |
| 481 id = "s" + (++$string_id); | |
| 482 $string_id_cache[key] = id; | |
| 483 } | |
| 484 return id; | |
| 485 } | |
| 486 | |
| 487 // A place to store the canonical consts | |
| 488 var $consts = {}; | |
| 489 | |
| 490 function $isDartMap(o) { | |
| 491 return !!(o && o.$implements$Map$Dart); | |
| 492 } | |
| 493 | |
| 494 // Intern const object "o" | |
| 495 function $intern(o, type_args) { | |
| 496 var id; | |
| 497 // Maps and arrays need special handling | |
| 498 // TODO(johnlenz): This array check may not be sufficient across iframes. | |
| 499 if (o instanceof Array) { | |
| 500 // Dart array literals are implemented as JavaScript native arrays. | |
| 501 id = $dart_const_array_id(o); | |
| 502 } else if ($isDartMap(o)) { | |
| 503 // Dart map literals are currently implemented by a non-const Dart class. | |
| 504 id = native_ConstHelper_getConstMapId(o); | |
| 505 } else { | |
| 506 id = "o" + o.$const_id(); | |
| 507 } | |
| 508 if (type_args != null) { | |
| 509 id += '<'; | |
| 510 for (var i=type_args.length-1; i >= 0; i--) { | |
| 511 id += type_args[i]; | |
| 512 id += "," | |
| 513 } | |
| 514 id += '>'; | |
| 515 } | |
| 516 var key = $CONST_MAP_PREFIX + id; | |
| 517 var match = $consts[key]; | |
| 518 if (match != null) { | |
| 519 return match; | |
| 520 } | |
| 521 o.$dartConstId = id; | |
| 522 $consts[key] = o; | |
| 523 return o; | |
| 524 } | |
| 525 | |
| 526 function $Dart$MapLiteralFactory() { | |
| 527 return native__CoreJsUtil__newMapLiteral(); | |
| 528 } | |
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