Global.java revision 1281:db5e1ef8a963
1/* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package jdk.nashorn.internal.objects; 27 28import static jdk.nashorn.internal.lookup.Lookup.MH; 29import static jdk.nashorn.internal.runtime.ECMAErrors.referenceError; 30import static jdk.nashorn.internal.runtime.ECMAErrors.typeError; 31import static jdk.nashorn.internal.runtime.JSType.isString; 32import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED; 33 34import java.io.IOException; 35import java.io.PrintWriter; 36import java.lang.invoke.MethodHandle; 37import java.lang.invoke.MethodHandles; 38import java.lang.invoke.MethodType; 39import java.lang.invoke.SwitchPoint; 40import java.lang.reflect.Field; 41import java.util.ArrayList; 42import java.util.Arrays; 43import java.util.List; 44import java.util.Map; 45import java.util.Objects; 46import java.util.concurrent.Callable; 47import java.util.concurrent.ConcurrentHashMap; 48import javax.script.ScriptContext; 49import javax.script.ScriptEngine; 50import jdk.internal.dynalink.CallSiteDescriptor; 51import jdk.internal.dynalink.linker.GuardedInvocation; 52import jdk.internal.dynalink.linker.LinkRequest; 53import jdk.nashorn.api.scripting.ClassFilter; 54import jdk.nashorn.api.scripting.ScriptObjectMirror; 55import jdk.nashorn.internal.lookup.Lookup; 56import jdk.nashorn.internal.objects.annotations.Attribute; 57import jdk.nashorn.internal.objects.annotations.Getter; 58import jdk.nashorn.internal.objects.annotations.Property; 59import jdk.nashorn.internal.objects.annotations.ScriptClass; 60import jdk.nashorn.internal.objects.annotations.Setter; 61import jdk.nashorn.internal.runtime.Context; 62import jdk.nashorn.internal.runtime.ECMAErrors; 63import jdk.nashorn.internal.runtime.FindProperty; 64import jdk.nashorn.internal.runtime.GlobalConstants; 65import jdk.nashorn.internal.runtime.GlobalFunctions; 66import jdk.nashorn.internal.runtime.JSType; 67import jdk.nashorn.internal.runtime.NativeJavaPackage; 68import jdk.nashorn.internal.runtime.PropertyDescriptor; 69import jdk.nashorn.internal.runtime.PropertyMap; 70import jdk.nashorn.internal.runtime.Scope; 71import jdk.nashorn.internal.runtime.ScriptEnvironment; 72import jdk.nashorn.internal.runtime.ScriptFunction; 73import jdk.nashorn.internal.runtime.ScriptObject; 74import jdk.nashorn.internal.runtime.ScriptRuntime; 75import jdk.nashorn.internal.runtime.ScriptingFunctions; 76import jdk.nashorn.internal.runtime.Specialization; 77import jdk.nashorn.internal.runtime.arrays.ArrayData; 78import jdk.nashorn.internal.runtime.linker.Bootstrap; 79import jdk.nashorn.internal.runtime.linker.InvokeByName; 80import jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor; 81import jdk.nashorn.internal.runtime.regexp.RegExpResult; 82import jdk.nashorn.internal.scripts.JD; 83import jdk.nashorn.internal.scripts.JO; 84import jdk.nashorn.tools.ShellFunctions; 85 86/** 87 * Representation of global scope. 88 */ 89@ScriptClass("Global") 90public final class Global extends ScriptObject implements Scope { 91 // Placeholder value used in place of a location property (__FILE__, __DIR__, __LINE__) 92 private static final Object LOCATION_PROPERTY_PLACEHOLDER = new Object(); 93 private final InvokeByName TO_STRING = new InvokeByName("toString", ScriptObject.class); 94 private final InvokeByName VALUE_OF = new InvokeByName("valueOf", ScriptObject.class); 95 96 // placeholder value for lazily initialized global objects 97 private static final Object LAZY_SENTINEL = new Object(); 98 99 /** 100 * Optimistic builtin names that require switchpoint invalidation 101 * upon assignment. Overly conservative, but works for now, to avoid 102 * any complicated scope checks and especially heavy weight guards 103 * like 104 * 105 * <pre> 106 * public boolean setterGuard(final Object receiver) { 107 * final Global global = Global.instance(); 108 * final ScriptObject sobj = global.getFunctionPrototype(); 109 * final Object apply = sobj.get("apply"); 110 * return apply == receiver; 111 * } 112 * </pre> 113 * 114 * Naturally, checking for builtin classes like NativeFunction is cheaper, 115 * it's when you start adding property checks for said builtins you have 116 * problems with guard speed. 117 */ 118 119 /** Nashorn extension: arguments array */ 120 @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_CONFIGURABLE) 121 public Object arguments; 122 123 /** ECMA 15.1.2.2 parseInt (string , radix) */ 124 @Property(attributes = Attribute.NOT_ENUMERABLE) 125 public Object parseInt; 126 127 /** ECMA 15.1.2.3 parseFloat (string) */ 128 @Property(attributes = Attribute.NOT_ENUMERABLE) 129 public Object parseFloat; 130 131 /** ECMA 15.1.2.4 isNaN (number) */ 132 @Property(attributes = Attribute.NOT_ENUMERABLE) 133 public Object isNaN; 134 135 /** ECMA 15.1.2.5 isFinite (number) */ 136 @Property(attributes = Attribute.NOT_ENUMERABLE) 137 public Object isFinite; 138 139 /** ECMA 15.1.3.3 encodeURI */ 140 @Property(attributes = Attribute.NOT_ENUMERABLE) 141 public Object encodeURI; 142 143 /** ECMA 15.1.3.4 encodeURIComponent */ 144 @Property(attributes = Attribute.NOT_ENUMERABLE) 145 public Object encodeURIComponent; 146 147 /** ECMA 15.1.3.1 decodeURI */ 148 @Property(attributes = Attribute.NOT_ENUMERABLE) 149 public Object decodeURI; 150 151 /** ECMA 15.1.3.2 decodeURIComponent */ 152 @Property(attributes = Attribute.NOT_ENUMERABLE) 153 public Object decodeURIComponent; 154 155 /** ECMA B.2.1 escape (string) */ 156 @Property(attributes = Attribute.NOT_ENUMERABLE) 157 public Object escape; 158 159 /** ECMA B.2.2 unescape (string) */ 160 @Property(attributes = Attribute.NOT_ENUMERABLE) 161 public Object unescape; 162 163 /** Nashorn extension: global.print */ 164 @Property(attributes = Attribute.NOT_ENUMERABLE) 165 public Object print; 166 167 /** Nashorn extension: global.load */ 168 @Property(attributes = Attribute.NOT_ENUMERABLE) 169 public Object load; 170 171 /** Nashorn extension: global.loadWithNewGlobal */ 172 @Property(attributes = Attribute.NOT_ENUMERABLE) 173 public Object loadWithNewGlobal; 174 175 /** Nashorn extension: global.exit */ 176 @Property(attributes = Attribute.NOT_ENUMERABLE) 177 public Object exit; 178 179 /** Nashorn extension: global.quit */ 180 @Property(attributes = Attribute.NOT_ENUMERABLE) 181 public Object quit; 182 183 /** Value property NaN of the Global Object - ECMA 15.1.1.1 NaN */ 184 @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT) 185 public final double NaN = Double.NaN; 186 187 /** Value property Infinity of the Global Object - ECMA 15.1.1.2 Infinity */ 188 @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT) 189 public final double Infinity = Double.POSITIVE_INFINITY; 190 191 /** Value property Undefined of the Global Object - ECMA 15.1.1.3 Undefined */ 192 @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT) 193 public final Object undefined = UNDEFINED; 194 195 /** ECMA 15.1.2.1 eval(x) */ 196 @Property(attributes = Attribute.NOT_ENUMERABLE) 197 public Object eval; 198 199 /** ECMA 15.1.4.1 Object constructor. */ 200 @Property(name = "Object", attributes = Attribute.NOT_ENUMERABLE) 201 public volatile Object object; 202 203 /** ECMA 15.1.4.2 Function constructor. */ 204 @Property(name = "Function", attributes = Attribute.NOT_ENUMERABLE) 205 public volatile Object function; 206 207 /** ECMA 15.1.4.3 Array constructor. */ 208 @Property(name = "Array", attributes = Attribute.NOT_ENUMERABLE) 209 public volatile Object array; 210 211 /** ECMA 15.1.4.4 String constructor */ 212 @Property(name = "String", attributes = Attribute.NOT_ENUMERABLE) 213 public volatile Object string; 214 215 /** ECMA 15.1.4.5 Boolean constructor */ 216 @Property(name = "Boolean", attributes = Attribute.NOT_ENUMERABLE) 217 public volatile Object _boolean; 218 219 /** ECMA 15.1.4.6 - Number constructor */ 220 @Property(name = "Number", attributes = Attribute.NOT_ENUMERABLE) 221 public volatile Object number; 222 223 /** 224 * Getter for ECMA 15.1.4.7 Date property 225 * 226 * @param self self reference 227 * @return Date property value 228 */ 229 @Getter(name = "Date", attributes = Attribute.NOT_ENUMERABLE) 230 public static Object getDate(final Object self) { 231 final Global global = Global.instanceFrom(self); 232 if (global.date == LAZY_SENTINEL) { 233 global.date = global.getBuiltinDate(); 234 } 235 return global.date; 236 } 237 238 /** 239 * Setter for ECMA 15.1.4.7 Date property 240 * 241 * @param self self reference 242 * @param value value for the Date property 243 */ 244 @Setter(name = "Date", attributes = Attribute.NOT_ENUMERABLE) 245 public static void setDate(final Object self, final Object value) { 246 final Global global = Global.instanceFrom(self); 247 global.date = value; 248 } 249 250 private volatile Object date = LAZY_SENTINEL; 251 252 /** 253 * Getter for ECMA 15.1.4.8 RegExp property 254 * 255 * @param self self reference 256 * @return RegExp property value 257 */ 258 @Getter(name = "RegExp", attributes = Attribute.NOT_ENUMERABLE) 259 public static Object getRegExp(final Object self) { 260 final Global global = Global.instanceFrom(self); 261 if (global.regexp == LAZY_SENTINEL) { 262 global.regexp = global.getBuiltinRegExp(); 263 } 264 return global.regexp; 265 } 266 267 /** 268 * Setter for ECMA 15.1.4.8 RegExp property 269 * 270 * @param self self reference 271 * @param value value for the RegExp property 272 */ 273 @Setter(name = "RegExp", attributes = Attribute.NOT_ENUMERABLE) 274 public static void setRegExp(final Object self, final Object value) { 275 final Global global = Global.instanceFrom(self); 276 global.regexp = value; 277 } 278 279 private volatile Object regexp = LAZY_SENTINEL; 280 281 /** 282 * Getter for ECMA 15.12 - The JSON property 283 * @param self self reference 284 * @return the value of JSON property 285 */ 286 @Getter(name = "JSON", attributes = Attribute.NOT_ENUMERABLE) 287 public static Object getJSON(final Object self) { 288 final Global global = Global.instanceFrom(self); 289 if (global.json == LAZY_SENTINEL) { 290 global.json = global.getBuiltinJSON(); 291 } 292 return global.json; 293 } 294 295 /** 296 * Setter for ECMA 15.12 - The JSON property 297 * @param self self reference 298 * @param value value for the JSON property 299 */ 300 @Setter(name = "JSON", attributes = Attribute.NOT_ENUMERABLE) 301 public static void setJSON(final Object self, final Object value) { 302 final Global global = Global.instanceFrom(self); 303 global.json = value; 304 } 305 306 private volatile Object json = LAZY_SENTINEL; 307 308 /** 309 * Getter for Nashorn extension: global.JSAdapter 310 * @param self self reference 311 * @return value of the JSAdapter property 312 */ 313 @Getter(name = "JSAdapter", attributes = Attribute.NOT_ENUMERABLE) 314 public static Object getJSAdapter(final Object self) { 315 final Global global = Global.instanceFrom(self); 316 if (global.jsadapter == LAZY_SENTINEL) { 317 global.jsadapter = global.getBuiltinJSAdapter(); 318 } 319 return global.jsadapter; 320 } 321 322 /** 323 * Setter for Nashorn extension: global.JSAdapter 324 * @param self self reference 325 * @param value value for the JSAdapter property 326 */ 327 @Setter(name = "JSAdapter", attributes = Attribute.NOT_ENUMERABLE) 328 public static void setJSAdapter(final Object self, final Object value) { 329 final Global global = Global.instanceFrom(self); 330 global.jsadapter = value; 331 } 332 333 private volatile Object jsadapter = LAZY_SENTINEL; 334 335 /** ECMA 15.8 - The Math object */ 336 @Property(name = "Math", attributes = Attribute.NOT_ENUMERABLE) 337 public volatile Object math; 338 339 /** Error object */ 340 @Property(name = "Error", attributes = Attribute.NOT_ENUMERABLE) 341 public volatile Object error; 342 343 /** 344 * Getter for the EvalError property 345 * @param self self reference 346 * @return the value of EvalError property 347 */ 348 @Getter(name = "EvalError", attributes = Attribute.NOT_ENUMERABLE) 349 public static Object getEvalError(final Object self) { 350 final Global global = Global.instanceFrom(self); 351 if (global.evalError == LAZY_SENTINEL) { 352 global.evalError = global.getBuiltinEvalError(); 353 } 354 return global.evalError; 355 } 356 357 /** 358 * Setter for the EvalError property 359 * @param self self reference 360 * @param value value of the EvalError property 361 */ 362 @Setter(name = "EvalError", attributes = Attribute.NOT_ENUMERABLE) 363 public static void setEvalError(final Object self, final Object value) { 364 final Global global = Global.instanceFrom(self); 365 global.evalError = value; 366 } 367 368 private volatile Object evalError = LAZY_SENTINEL; 369 370 /** 371 * Getter for the RangeError property. 372 * @param self self reference 373 * @return the value of RangeError property 374 */ 375 @Getter(name = "RangeError", attributes = Attribute.NOT_ENUMERABLE) 376 public static Object getRangeError(final Object self) { 377 final Global global = Global.instanceFrom(self); 378 if (global.rangeError == LAZY_SENTINEL) { 379 global.rangeError = global.getBuiltinRangeError(); 380 } 381 return global.rangeError; 382 } 383 384 385 /** 386 * Setter for the RangeError property. 387 * @param self self reference 388 * @param value value for the RangeError property 389 */ 390 @Setter(name = "RangeError", attributes = Attribute.NOT_ENUMERABLE) 391 public static void setRangeError(final Object self, final Object value) { 392 final Global global = Global.instanceFrom(self); 393 global.rangeError = value; 394 } 395 396 private volatile Object rangeError = LAZY_SENTINEL; 397 398 /** ReferenceError object */ 399 @Property(name = "ReferenceError", attributes = Attribute.NOT_ENUMERABLE) 400 public volatile Object referenceError; 401 402 /** SyntaxError object */ 403 @Property(name = "SyntaxError", attributes = Attribute.NOT_ENUMERABLE) 404 public volatile Object syntaxError; 405 406 /** TypeError object */ 407 @Property(name = "TypeError", attributes = Attribute.NOT_ENUMERABLE) 408 public volatile Object typeError; 409 410 /** 411 * Getter for the URIError property. 412 * @param self self reference 413 * @return the value of URIError property 414 */ 415 @Getter(name = "URIError", attributes = Attribute.NOT_ENUMERABLE) 416 public static Object getURIError(final Object self) { 417 final Global global = Global.instanceFrom(self); 418 if (global.uriError == LAZY_SENTINEL) { 419 global.uriError = global.getBuiltinURIError(); 420 } 421 return global.uriError; 422 } 423 424 /** 425 * Setter for the URIError property. 426 * @param self self reference 427 * @param value value for the URIError property 428 */ 429 @Setter(name = "URIError", attributes = Attribute.NOT_ENUMERABLE) 430 public static void setURIError(final Object self, final Object value) { 431 final Global global = Global.instanceFrom(self); 432 global.uriError = value; 433 } 434 435 private volatile Object uriError = LAZY_SENTINEL; 436 437 /** 438 * Getter for the ArrayBuffer property. 439 * @param self self reference 440 * @return the value of the ArrayBuffer property 441 */ 442 @Getter(name = "ArrayBuffer", attributes = Attribute.NOT_ENUMERABLE) 443 public static Object getArrayBuffer(final Object self) { 444 final Global global = Global.instanceFrom(self); 445 if (global.arrayBuffer == LAZY_SENTINEL) { 446 global.arrayBuffer = global.getBuiltinArrayBuffer(); 447 } 448 return global.arrayBuffer; 449 } 450 451 /** 452 * Setter for the ArrayBuffer property. 453 * @param self self reference 454 * @param value value of the ArrayBuffer property 455 */ 456 @Setter(name = "ArrayBuffer", attributes = Attribute.NOT_ENUMERABLE) 457 public static void setArrayBuffer(final Object self, final Object value) { 458 final Global global = Global.instanceFrom(self); 459 global.arrayBuffer = value; 460 } 461 462 private volatile Object arrayBuffer; 463 464 /** 465 * Getter for the DataView property. 466 * @param self self reference 467 * @return the value of the DataView property 468 */ 469 @Getter(name = "DataView", attributes = Attribute.NOT_ENUMERABLE) 470 public static Object getDataView(final Object self) { 471 final Global global = Global.instanceFrom(self); 472 if (global.dataView == LAZY_SENTINEL) { 473 global.dataView = global.getBuiltinDataView(); 474 } 475 return global.dataView; 476 } 477 478 479 /** 480 * Setter for the DataView property. 481 * @param self self reference 482 * @param value value of the DataView property 483 */ 484 @Setter(name = "DataView", attributes = Attribute.NOT_ENUMERABLE) 485 public static void setDataView(final Object self, final Object value) { 486 final Global global = Global.instanceFrom(self); 487 global.dataView = value; 488 } 489 490 private volatile Object dataView; 491 492 /** 493 * Getter for the Int8Array property. 494 * @param self self reference 495 * @return the value of the Int8Array property. 496 */ 497 @Getter(name = "Int8Array", attributes = Attribute.NOT_ENUMERABLE) 498 public static Object getInt8Array(final Object self) { 499 final Global global = Global.instanceFrom(self); 500 if (global.int8Array == LAZY_SENTINEL) { 501 global.int8Array = global.getBuiltinInt8Array(); 502 } 503 return global.int8Array; 504 } 505 506 /** 507 * Setter for the Int8Array property. 508 * @param self self reference 509 * @param value value of the Int8Array property 510 */ 511 @Setter(name = "Int8Array", attributes = Attribute.NOT_ENUMERABLE) 512 public static void setInt8Array(final Object self, final Object value) { 513 final Global global = Global.instanceFrom(self); 514 global.int8Array = value; 515 } 516 517 private volatile Object int8Array; 518 519 /** 520 * Getter for the Uin8Array property. 521 * @param self self reference 522 * @return the value of the Uint8Array property 523 */ 524 @Getter(name = "Uint8Array", attributes = Attribute.NOT_ENUMERABLE) 525 public static Object getUint8Array(final Object self) { 526 final Global global = Global.instanceFrom(self); 527 if (global.uint8Array == LAZY_SENTINEL) { 528 global.uint8Array = global.getBuiltinUint8Array(); 529 } 530 return global.uint8Array; 531 } 532 533 /** 534 * Setter for the Uin8Array property. 535 * @param self self reference 536 * @param value value of the Uin8Array property 537 */ 538 @Setter(name = "Uint8Array", attributes = Attribute.NOT_ENUMERABLE) 539 public static void setUint8Array(final Object self, final Object value) { 540 final Global global = Global.instanceFrom(self); 541 global.uint8Array = value; 542 } 543 544 private volatile Object uint8Array; 545 546 /** 547 * Getter for the Uint8ClampedArray property. 548 * @param self self reference 549 * @return the value of the Uint8ClampedArray property 550 */ 551 @Getter(name = "Uint8ClampedArray", attributes = Attribute.NOT_ENUMERABLE) 552 public static Object getUint8ClampedArray(final Object self) { 553 final Global global = Global.instanceFrom(self); 554 if (global.uint8ClampedArray == LAZY_SENTINEL) { 555 global.uint8ClampedArray = global.getBuiltinUint8ClampedArray(); 556 } 557 return global.uint8ClampedArray; 558 } 559 560 /** 561 * Setter for the Uint8ClampedArray property. 562 * @param self self reference 563 * @param value value of the Uint8ClampedArray property 564 */ 565 @Setter(name = "Uint8ClampedArray", attributes = Attribute.NOT_ENUMERABLE) 566 public static void setUint8ClampedArray(final Object self, final Object value) { 567 final Global global = Global.instanceFrom(self); 568 global.uint8ClampedArray = value; 569 } 570 571 private volatile Object uint8ClampedArray; 572 573 /** 574 * Getter for the Int16Array property. 575 * @param self self reference 576 * @return the value of the Int16Array property 577 */ 578 @Getter(name = "Int16Array", attributes = Attribute.NOT_ENUMERABLE) 579 public static Object getInt16Array(final Object self) { 580 final Global global = Global.instanceFrom(self); 581 if (global.int16Array == LAZY_SENTINEL) { 582 global.int16Array = global.getBuiltinInt16Array(); 583 } 584 return global.int16Array; 585 } 586 587 /** 588 * Setter for the Int16Array property. 589 * @param self self reference 590 * @param value value of the Int16Array property 591 */ 592 @Setter(name = "Int16Array", attributes = Attribute.NOT_ENUMERABLE) 593 public static void setInt16Array(final Object self, final Object value) { 594 final Global global = Global.instanceFrom(self); 595 global.int16Array = value; 596 } 597 598 private volatile Object int16Array; 599 600 /** 601 * Getter for the Uint16Array property. 602 * @param self self reference 603 * @return the value of the Uint16Array property 604 */ 605 @Getter(name = "Uint16Array", attributes = Attribute.NOT_ENUMERABLE) 606 public static Object getUint16Array(final Object self) { 607 final Global global = Global.instanceFrom(self); 608 if (global.uint16Array == LAZY_SENTINEL) { 609 global.uint16Array = global.getBuiltinUint16Array(); 610 } 611 return global.uint16Array; 612 } 613 614 /** 615 * Setter for the Uint16Array property. 616 * @param self self reference 617 * @param value value of the Uint16Array property 618 */ 619 @Setter(name = "Uint16Array", attributes = Attribute.NOT_ENUMERABLE) 620 public static void setUint16Array(final Object self, final Object value) { 621 final Global global = Global.instanceFrom(self); 622 global.uint16Array = value; 623 } 624 625 private volatile Object uint16Array; 626 627 /** 628 * Getter for the Int32Array property. 629 * 630 * @param self self reference 631 * @return the value of the Int32Array property 632 */ 633 @Getter(name = "Int32Array", attributes = Attribute.NOT_ENUMERABLE) 634 public static Object getInt32Array(final Object self) { 635 final Global global = Global.instanceFrom(self); 636 if (global.int32Array == LAZY_SENTINEL) { 637 global.int32Array = global.getBuiltinInt32Array(); 638 } 639 return global.int32Array; 640 } 641 642 643 /** 644 * Setter for the Int32Array property. 645 * 646 * @param self self reference 647 * @param value value of the Int32Array property 648 */ 649 @Setter(name = "Int32Array", attributes = Attribute.NOT_ENUMERABLE) 650 public static void setInt32Array(final Object self, final Object value) { 651 final Global global = Global.instanceFrom(self); 652 global.int32Array = value; 653 } 654 655 private volatile Object int32Array; 656 657 /** 658 * Getter of the Uint32Array property. 659 * 660 * @param self self reference 661 * @return the value of the Uint32Array property 662 */ 663 @Getter(name = "Uint32Array", attributes = Attribute.NOT_ENUMERABLE) 664 public static Object getUint32Array(final Object self) { 665 final Global global = Global.instanceFrom(self); 666 if (global.uint32Array == LAZY_SENTINEL) { 667 global.uint32Array = global.getBuiltinUint32Array(); 668 } 669 return global.uint32Array; 670 } 671 672 673 /** 674 * Setter of the Uint32Array property. 675 * 676 * @param self self reference 677 * @param value value of the Uint32Array property 678 */ 679 @Setter(name = "Uint32Array", attributes = Attribute.NOT_ENUMERABLE) 680 public static void setUint32Array(final Object self, final Object value) { 681 final Global global = Global.instanceFrom(self); 682 global.uint32Array = value; 683 } 684 685 private volatile Object uint32Array; 686 687 /** 688 * Getter for the Float32Array property. 689 * 690 * @param self self reference 691 * @return the value of the Float32Array property 692 */ 693 @Getter(name = "Float32Array", attributes = Attribute.NOT_ENUMERABLE) 694 public static Object getFloat32Array(final Object self) { 695 final Global global = Global.instanceFrom(self); 696 if (global.float32Array == LAZY_SENTINEL) { 697 global.float32Array = global.getBuiltinFloat32Array(); 698 } 699 return global.float32Array; 700 } 701 702 /** 703 * Setter for the Float32Array property. 704 * 705 * @param self self reference 706 * @param value value of the Float32Array property 707 */ 708 @Setter(name = "Float32Array", attributes = Attribute.NOT_ENUMERABLE) 709 public static void setFloat32Array(final Object self, final Object value) { 710 final Global global = Global.instanceFrom(self); 711 global.float32Array = value; 712 } 713 714 private volatile Object float32Array; 715 716 /** 717 * Getter for the Float64Array property. 718 * 719 * @param self self reference 720 * @return the value of the Float64Array property 721 */ 722 @Getter(name = "Float64Array", attributes = Attribute.NOT_ENUMERABLE) 723 public static Object getFloat64Array(final Object self) { 724 final Global global = Global.instanceFrom(self); 725 if (global.float64Array == LAZY_SENTINEL) { 726 global.float64Array = global.getBuiltinFloat64Array(); 727 } 728 return global.float64Array; 729 } 730 731 /** 732 * Setter for the Float64Array property. 733 * 734 * @param self self reference 735 * @param value value of the Float64Array property 736 */ 737 @Setter(name = "Float64Array", attributes = Attribute.NOT_ENUMERABLE) 738 public static void setFloat64Array(final Object self, final Object value) { 739 final Global global = Global.instanceFrom(self); 740 global.float64Array = value; 741 } 742 743 private volatile Object float64Array; 744 745 /** Nashorn extension: Java access - global.Packages */ 746 @Property(name = "Packages", attributes = Attribute.NOT_ENUMERABLE) 747 public volatile Object packages; 748 749 /** Nashorn extension: Java access - global.com */ 750 @Property(attributes = Attribute.NOT_ENUMERABLE) 751 public volatile Object com; 752 753 /** Nashorn extension: Java access - global.edu */ 754 @Property(attributes = Attribute.NOT_ENUMERABLE) 755 public volatile Object edu; 756 757 /** Nashorn extension: Java access - global.java */ 758 @Property(attributes = Attribute.NOT_ENUMERABLE) 759 public volatile Object java; 760 761 /** Nashorn extension: Java access - global.javafx */ 762 @Property(attributes = Attribute.NOT_ENUMERABLE) 763 public volatile Object javafx; 764 765 /** Nashorn extension: Java access - global.javax */ 766 @Property(attributes = Attribute.NOT_ENUMERABLE) 767 public volatile Object javax; 768 769 /** Nashorn extension: Java access - global.org */ 770 @Property(attributes = Attribute.NOT_ENUMERABLE) 771 public volatile Object org; 772 773 /** 774 * Getter for the Nashorn extension: Java access - global.javaImporter. 775 * 776 * @param self self reference 777 * @return the value of the JavaImporter property 778 */ 779 @Getter(name = "JavaImporter", attributes = Attribute.NOT_ENUMERABLE) 780 public static Object getJavaImporter(final Object self) { 781 final Global global = Global.instanceFrom(self); 782 if (global.javaImporter == LAZY_SENTINEL) { 783 global.javaImporter = global.getBuiltinJavaImporter(); 784 } 785 return global.javaImporter; 786 } 787 788 /** 789 * Setter for the Nashorn extension: Java access - global.javaImporter. 790 * 791 * @param self self reference 792 * @param value value of the JavaImporter property 793 */ 794 @Setter(name = "JavaImporter", attributes = Attribute.NOT_ENUMERABLE) 795 public static void setJavaImporter(final Object self, final Object value) { 796 final Global global = Global.instanceFrom(self); 797 global.javaImporter = value; 798 } 799 800 private volatile Object javaImporter; 801 802 /** 803 * Getter for the Nashorn extension: global.Java property. 804 * 805 * @param self self reference 806 * @return the value of the Java property 807 */ 808 @Getter(name = "Java", attributes = Attribute.NOT_ENUMERABLE) 809 public static Object getJavaApi(final Object self) { 810 final Global global = Global.instanceFrom(self); 811 if (global.javaApi == LAZY_SENTINEL) { 812 global.javaApi = global.getBuiltinJavaApi(); 813 } 814 return global.javaApi; 815 } 816 817 /** 818 * Setter for the Nashorn extension: global.Java property. 819 * 820 * @param self self reference 821 * @param value value of the Java property 822 */ 823 @Setter(name = "Java", attributes = Attribute.NOT_ENUMERABLE) 824 public static void setJavaApi(final Object self, final Object value) { 825 final Global global = Global.instanceFrom(self); 826 global.javaApi = value; 827 } 828 829 private volatile Object javaApi; 830 831 /** Nashorn extension: current script's file name */ 832 @Property(name = "__FILE__", attributes = Attribute.NON_ENUMERABLE_CONSTANT) 833 public final Object __FILE__ = LOCATION_PROPERTY_PLACEHOLDER; 834 835 /** Nashorn extension: current script's directory */ 836 @Property(name = "__DIR__", attributes = Attribute.NON_ENUMERABLE_CONSTANT) 837 public final Object __DIR__ = LOCATION_PROPERTY_PLACEHOLDER; 838 839 /** Nashorn extension: current source line number being executed */ 840 @Property(name = "__LINE__", attributes = Attribute.NON_ENUMERABLE_CONSTANT) 841 public final Object __LINE__ = LOCATION_PROPERTY_PLACEHOLDER; 842 843 private volatile NativeDate DEFAULT_DATE; 844 845 /** Used as Date.prototype's default value */ 846 NativeDate getDefaultDate() { 847 return DEFAULT_DATE; 848 } 849 850 private volatile NativeRegExp DEFAULT_REGEXP; 851 852 /** Used as RegExp.prototype's default value */ 853 NativeRegExp getDefaultRegExp() { 854 return DEFAULT_REGEXP; 855 } 856 857 /* 858 * Built-in constructor objects: Even if user changes dynamic values of 859 * "Object", "Array" etc., we still want to keep original values of these 860 * constructors here. For example, we need to be able to create array, 861 * regexp literals even after user overwrites global "Array" or "RegExp" 862 * constructor - see also ECMA 262 spec. Annex D. 863 */ 864 private ScriptFunction builtinFunction; 865 private ScriptFunction builtinObject; 866 private ScriptFunction builtinArray; 867 private ScriptFunction builtinBoolean; 868 private ScriptFunction builtinDate; 869 private ScriptObject builtinJSON; 870 private ScriptFunction builtinJSAdapter; 871 private ScriptObject builtinMath; 872 private ScriptFunction builtinNumber; 873 private ScriptFunction builtinRegExp; 874 private ScriptFunction builtinString; 875 private ScriptFunction builtinError; 876 private ScriptFunction builtinEval; 877 private ScriptFunction builtinEvalError; 878 private ScriptFunction builtinRangeError; 879 private ScriptFunction builtinReferenceError; 880 private ScriptFunction builtinSyntaxError; 881 private ScriptFunction builtinTypeError; 882 private ScriptFunction builtinURIError; 883 private ScriptObject builtinPackages; 884 private ScriptObject builtinCom; 885 private ScriptObject builtinEdu; 886 private ScriptObject builtinJava; 887 private ScriptObject builtinJavafx; 888 private ScriptObject builtinJavax; 889 private ScriptObject builtinOrg; 890 private ScriptFunction builtinJavaImporter; 891 private ScriptObject builtinJavaApi; 892 private ScriptFunction builtinArrayBuffer; 893 private ScriptFunction builtinDataView; 894 private ScriptFunction builtinInt8Array; 895 private ScriptFunction builtinUint8Array; 896 private ScriptFunction builtinUint8ClampedArray; 897 private ScriptFunction builtinInt16Array; 898 private ScriptFunction builtinUint16Array; 899 private ScriptFunction builtinInt32Array; 900 private ScriptFunction builtinUint32Array; 901 private ScriptFunction builtinFloat32Array; 902 private ScriptFunction builtinFloat64Array; 903 904 /* 905 * ECMA section 13.2.3 The [[ThrowTypeError]] Function Object 906 */ 907 private ScriptFunction typeErrorThrower; 908 909 // Flag to indicate that a split method issued a return statement 910 private int splitState = -1; 911 912 // Used to store the last RegExp result to support deprecated RegExp constructor properties 913 private RegExpResult lastRegExpResult; 914 915 private static final MethodHandle EVAL = findOwnMH_S("eval", Object.class, Object.class, Object.class); 916 private static final MethodHandle NO_SUCH_PROPERTY = findOwnMH_S(NO_SUCH_PROPERTY_NAME, Object.class, Object.class, Object.class); 917 private static final MethodHandle PRINT = findOwnMH_S("print", Object.class, Object.class, Object[].class); 918 private static final MethodHandle PRINTLN = findOwnMH_S("println", Object.class, Object.class, Object[].class); 919 private static final MethodHandle LOAD = findOwnMH_S("load", Object.class, Object.class, Object.class); 920 private static final MethodHandle LOAD_WITH_NEW_GLOBAL = findOwnMH_S("loadWithNewGlobal", Object.class, Object.class, Object[].class); 921 private static final MethodHandle EXIT = findOwnMH_S("exit", Object.class, Object.class, Object.class); 922 private static final MethodHandle LEXICAL_SCOPE_FILTER = findOwnMH_S("lexicalScopeFilter", Object.class, Object.class); 923 924 // initialized by nasgen 925 private static PropertyMap $nasgenmap$; 926 927 // context to which this global belongs to 928 private final Context context; 929 930 // current ScriptContext to use - can be null. 931 private ScriptContext scontext; 932 // current ScriptEngine associated - can be null. 933 private ScriptEngine engine; 934 935 // ES6 global lexical scope. 936 private final LexicalScope lexicalScope; 937 938 // Switchpoint for non-constant global callsites in the presence of ES6 lexical scope. 939 private SwitchPoint lexicalScopeSwitchPoint; 940 941 /** 942 * Set the current script context 943 * @param scontext script context 944 */ 945 public void setScriptContext(final ScriptContext scontext) { 946 this.scontext = scontext; 947 } 948 949 @Override 950 protected Context getContext() { 951 return context; 952 } 953 954 @Override 955 protected boolean useDualFields() { 956 return context.useDualFields(); 957 } 958 959 // performs initialization checks for Global constructor and returns the 960 // PropertyMap, if everything is fine. 961 private static PropertyMap checkAndGetMap(final Context context) { 962 // security check first 963 final SecurityManager sm = System.getSecurityManager(); 964 if (sm != null) { 965 sm.checkPermission(new RuntimePermission(Context.NASHORN_CREATE_GLOBAL)); 966 } 967 968 Objects.requireNonNull(context); 969 970 return $nasgenmap$; 971 } 972 973 /** 974 * Constructor 975 * 976 * @param context the context 977 */ 978 public Global(final Context context) { 979 super(checkAndGetMap(context)); 980 this.context = context; 981 this.setIsScope(); 982 this.lexicalScope = context.getEnv()._es6 ? new LexicalScope(this) : null; 983 } 984 985 /** 986 * Script access to "current" Global instance 987 * 988 * @return the global singleton 989 */ 990 public static Global instance() { 991 final Global global = Context.getGlobal(); 992 Objects.requireNonNull(global); 993 return global; 994 } 995 996 private static Global instanceFrom(final Object self) { 997 return self instanceof Global? (Global)self : instance(); 998 } 999 1000 /** 1001 * Check if we have a Global instance 1002 * @return true if one exists 1003 */ 1004 public static boolean hasInstance() { 1005 return Context.getGlobal() != null; 1006 } 1007 1008 /** 1009 * Script access to {@link ScriptEnvironment} 1010 * 1011 * @return the script environment 1012 */ 1013 static ScriptEnvironment getEnv() { 1014 return instance().getContext().getEnv(); 1015 } 1016 1017 /** 1018 * Script access to {@link Context} 1019 * 1020 * @return the context 1021 */ 1022 static Context getThisContext() { 1023 return instance().getContext(); 1024 } 1025 1026 // Runtime interface to Global 1027 1028 /** 1029 * Is there a class filter in the current Context? 1030 * @return class filter 1031 */ 1032 public ClassFilter getClassFilter() { 1033 return context.getClassFilter(); 1034 } 1035 1036 /** 1037 * Is this global of the given Context? 1038 * @param ctxt the context 1039 * @return true if this global belongs to the given Context 1040 */ 1041 public boolean isOfContext(final Context ctxt) { 1042 return this.context == ctxt; 1043 } 1044 1045 /** 1046 * Does this global belong to a strict Context? 1047 * @return true if this global belongs to a strict Context 1048 */ 1049 public boolean isStrictContext() { 1050 return context.getEnv()._strict; 1051 } 1052 1053 /** 1054 * Initialize standard builtin objects like "Object", "Array", "Function" etc. 1055 * as well as our extension builtin objects like "Java", "JSAdapter" as properties 1056 * of the global scope object. 1057 * 1058 * @param eng ScriptEngine to initialize 1059 */ 1060 public void initBuiltinObjects(final ScriptEngine eng) { 1061 if (this.builtinObject != null) { 1062 // already initialized, just return 1063 return; 1064 } 1065 1066 this.engine = eng; 1067 init(eng); 1068 } 1069 1070 /** 1071 * Wrap a Java object as corresponding script object 1072 * 1073 * @param obj object to wrap 1074 * @return wrapped object 1075 */ 1076 public Object wrapAsObject(final Object obj) { 1077 if (obj instanceof Boolean) { 1078 return new NativeBoolean((Boolean)obj, this); 1079 } else if (obj instanceof Number) { 1080 return new NativeNumber(((Number)obj).doubleValue(), this); 1081 } else if (isString(obj)) { 1082 return new NativeString((CharSequence)obj, this); 1083 } else if (obj instanceof Object[]) { // extension 1084 return new NativeArray(ArrayData.allocate((Object[])obj), this); 1085 } else if (obj instanceof double[]) { // extension 1086 return new NativeArray(ArrayData.allocate((double[])obj), this); 1087 } else if (obj instanceof long[]) { 1088 return new NativeArray(ArrayData.allocate((long[])obj), this); 1089 } else if (obj instanceof int[]) { 1090 return new NativeArray(ArrayData.allocate((int[]) obj), this); 1091 } else if (obj instanceof ArrayData) { 1092 return new NativeArray((ArrayData) obj, this); 1093 } else { 1094 // FIXME: more special cases? Map? List? 1095 return obj; 1096 } 1097 } 1098 1099 /** 1100 * Lookup helper for JS primitive types 1101 * 1102 * @param request the link request for the dynamic call site. 1103 * @param self self reference 1104 * 1105 * @return guarded invocation 1106 */ 1107 public static GuardedInvocation primitiveLookup(final LinkRequest request, final Object self) { 1108 if (isString(self)) { 1109 return NativeString.lookupPrimitive(request, self); 1110 } else if (self instanceof Number) { 1111 return NativeNumber.lookupPrimitive(request, self); 1112 } else if (self instanceof Boolean) { 1113 return NativeBoolean.lookupPrimitive(request, self); 1114 } 1115 throw new IllegalArgumentException("Unsupported primitive: " + self); 1116 } 1117 1118 /** 1119 * Returns a method handle that creates a wrapper object for a JS primitive value. 1120 * 1121 * @param self receiver object 1122 * @return method handle to create wrapper objects for primitive receiver 1123 */ 1124 public static MethodHandle getPrimitiveWrapFilter(final Object self) { 1125 if (isString(self)) { 1126 return NativeString.WRAPFILTER; 1127 } else if (self instanceof Number) { 1128 return NativeNumber.WRAPFILTER; 1129 } else if (self instanceof Boolean) { 1130 return NativeBoolean.WRAPFILTER; 1131 } 1132 throw new IllegalArgumentException("Unsupported primitive: " + self); 1133 } 1134 1135 1136 /** 1137 * Create a new empty script object 1138 * 1139 * @return the new ScriptObject 1140 */ 1141 public ScriptObject newObject() { 1142 return useDualFields() ? new JD(getObjectPrototype()) : new JO(getObjectPrototype()); 1143 } 1144 1145 /** 1146 * Default value of given type 1147 * 1148 * @param sobj script object 1149 * @param typeHint type hint 1150 * 1151 * @return default value 1152 */ 1153 public Object getDefaultValue(final ScriptObject sobj, final Class<?> typeHint) { 1154 // When the [[DefaultValue]] internal method of O is called with no hint, 1155 // then it behaves as if the hint were Number, unless O is a Date object 1156 // in which case it behaves as if the hint were String. 1157 Class<?> hint = typeHint; 1158 if (hint == null) { 1159 hint = Number.class; 1160 } 1161 1162 try { 1163 if (hint == String.class) { 1164 1165 final Object toString = TO_STRING.getGetter().invokeExact(sobj); 1166 1167 if (Bootstrap.isCallable(toString)) { 1168 final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj); 1169 if (JSType.isPrimitive(value)) { 1170 return value; 1171 } 1172 } 1173 1174 final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj); 1175 if (Bootstrap.isCallable(valueOf)) { 1176 final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj); 1177 if (JSType.isPrimitive(value)) { 1178 return value; 1179 } 1180 } 1181 throw typeError(this, "cannot.get.default.string"); 1182 } 1183 1184 if (hint == Number.class) { 1185 final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj); 1186 if (Bootstrap.isCallable(valueOf)) { 1187 final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj); 1188 if (JSType.isPrimitive(value)) { 1189 return value; 1190 } 1191 } 1192 1193 final Object toString = TO_STRING.getGetter().invokeExact(sobj); 1194 if (Bootstrap.isCallable(toString)) { 1195 final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj); 1196 if (JSType.isPrimitive(value)) { 1197 return value; 1198 } 1199 } 1200 1201 throw typeError(this, "cannot.get.default.number"); 1202 } 1203 } catch (final RuntimeException | Error e) { 1204 throw e; 1205 } catch (final Throwable t) { 1206 throw new RuntimeException(t); 1207 } 1208 1209 return UNDEFINED; 1210 } 1211 1212 /** 1213 * Is the given ScriptObject an ECMAScript Error object? 1214 * 1215 * @param sobj the object being checked 1216 * @return true if sobj is an Error object 1217 */ 1218 public boolean isError(final ScriptObject sobj) { 1219 final ScriptObject errorProto = getErrorPrototype(); 1220 ScriptObject proto = sobj.getProto(); 1221 while (proto != null) { 1222 if (proto == errorProto) { 1223 return true; 1224 } 1225 proto = proto.getProto(); 1226 } 1227 return false; 1228 } 1229 1230 /** 1231 * Create a new ECMAScript Error object. 1232 * 1233 * @param msg error message 1234 * @return newly created Error object 1235 */ 1236 public ScriptObject newError(final String msg) { 1237 return new NativeError(msg, this); 1238 } 1239 1240 /** 1241 * Create a new ECMAScript EvalError object. 1242 * 1243 * @param msg error message 1244 * @return newly created EvalError object 1245 */ 1246 public ScriptObject newEvalError(final String msg) { 1247 return new NativeEvalError(msg, this); 1248 } 1249 1250 /** 1251 * Create a new ECMAScript RangeError object. 1252 * 1253 * @param msg error message 1254 * @return newly created RangeError object 1255 */ 1256 public ScriptObject newRangeError(final String msg) { 1257 return new NativeRangeError(msg, this); 1258 } 1259 1260 /** 1261 * Create a new ECMAScript ReferenceError object. 1262 * 1263 * @param msg error message 1264 * @return newly created ReferenceError object 1265 */ 1266 public ScriptObject newReferenceError(final String msg) { 1267 return new NativeReferenceError(msg, this); 1268 } 1269 1270 /** 1271 * Create a new ECMAScript SyntaxError object. 1272 * 1273 * @param msg error message 1274 * @return newly created SyntaxError object 1275 */ 1276 public ScriptObject newSyntaxError(final String msg) { 1277 return new NativeSyntaxError(msg, this); 1278 } 1279 1280 /** 1281 * Create a new ECMAScript TypeError object. 1282 * 1283 * @param msg error message 1284 * @return newly created TypeError object 1285 */ 1286 public ScriptObject newTypeError(final String msg) { 1287 return new NativeTypeError(msg, this); 1288 } 1289 1290 /** 1291 * Create a new ECMAScript URIError object. 1292 * 1293 * @param msg error message 1294 * @return newly created URIError object 1295 */ 1296 public ScriptObject newURIError(final String msg) { 1297 return new NativeURIError(msg, this); 1298 } 1299 1300 /** 1301 * Create a new ECMAScript GenericDescriptor object. 1302 * 1303 * @param configurable is the property configurable? 1304 * @param enumerable is the property enumerable? 1305 * @return newly created GenericDescriptor object 1306 */ 1307 public PropertyDescriptor newGenericDescriptor(final boolean configurable, final boolean enumerable) { 1308 return new GenericPropertyDescriptor(configurable, enumerable, this); 1309 } 1310 1311 /** 1312 * Create a new ECMAScript DatePropertyDescriptor object. 1313 * 1314 * @param value of the data property 1315 * @param configurable is the property configurable? 1316 * @param enumerable is the property enumerable? 1317 * @param writable is the property writable? 1318 * @return newly created DataPropertyDescriptor object 1319 */ 1320 public PropertyDescriptor newDataDescriptor(final Object value, final boolean configurable, final boolean enumerable, final boolean writable) { 1321 return new DataPropertyDescriptor(configurable, enumerable, writable, value, this); 1322 } 1323 1324 /** 1325 * Create a new ECMAScript AccessorPropertyDescriptor object. 1326 * 1327 * @param get getter function of the user accessor property 1328 * @param set setter function of the user accessor property 1329 * @param configurable is the property configurable? 1330 * @param enumerable is the property enumerable? 1331 * @return newly created AccessorPropertyDescriptor object 1332 */ 1333 public PropertyDescriptor newAccessorDescriptor(final Object get, final Object set, final boolean configurable, final boolean enumerable) { 1334 final AccessorPropertyDescriptor desc = new AccessorPropertyDescriptor(configurable, enumerable, get == null ? UNDEFINED : get, set == null ? UNDEFINED : set, this); 1335 1336 if (get == null) { 1337 desc.delete(PropertyDescriptor.GET, false); 1338 } 1339 1340 if (set == null) { 1341 desc.delete(PropertyDescriptor.SET, false); 1342 } 1343 1344 return desc; 1345 } 1346 1347 private static <T> T getLazilyCreatedValue(final Object key, final Callable<T> creator, final Map<Object, T> map) { 1348 final T obj = map.get(key); 1349 if (obj != null) { 1350 return obj; 1351 } 1352 1353 try { 1354 final T newObj = creator.call(); 1355 final T existingObj = map.putIfAbsent(key, newObj); 1356 return existingObj != null ? existingObj : newObj; 1357 } catch (final Exception exp) { 1358 throw new RuntimeException(exp); 1359 } 1360 } 1361 1362 private final Map<Object, InvokeByName> namedInvokers = new ConcurrentHashMap<>(); 1363 1364 1365 /** 1366 * Get cached InvokeByName object for the given key 1367 * @param key key to be associated with InvokeByName object 1368 * @param creator if InvokeByName is absent 'creator' is called to make one (lazy init) 1369 * @return InvokeByName object associated with the key. 1370 */ 1371 public InvokeByName getInvokeByName(final Object key, final Callable<InvokeByName> creator) { 1372 return getLazilyCreatedValue(key, creator, namedInvokers); 1373 } 1374 1375 private final Map<Object, MethodHandle> dynamicInvokers = new ConcurrentHashMap<>(); 1376 1377 /** 1378 * Get cached dynamic method handle for the given key 1379 * @param key key to be associated with dynamic method handle 1380 * @param creator if method handle is absent 'creator' is called to make one (lazy init) 1381 * @return dynamic method handle associated with the key. 1382 */ 1383 public MethodHandle getDynamicInvoker(final Object key, final Callable<MethodHandle> creator) { 1384 return getLazilyCreatedValue(key, creator, dynamicInvokers); 1385 } 1386 1387 /** 1388 * Hook to search missing variables in ScriptContext if available 1389 * @param self used to detect if scope call or not (this function is 'strict') 1390 * @param name name of the variable missing 1391 * @return value of the missing variable or undefined (or TypeError for scope search) 1392 */ 1393 public static Object __noSuchProperty__(final Object self, final Object name) { 1394 final Global global = Global.instance(); 1395 final ScriptContext sctxt = global.scontext; 1396 final String nameStr = name.toString(); 1397 1398 if (sctxt != null) { 1399 final int scope = sctxt.getAttributesScope(nameStr); 1400 if (scope != -1) { 1401 return ScriptObjectMirror.unwrap(sctxt.getAttribute(nameStr, scope), global); 1402 } 1403 } 1404 1405 switch (nameStr) { 1406 case "context": 1407 return sctxt; 1408 case "engine": 1409 return global.engine; 1410 default: 1411 break; 1412 } 1413 1414 if (self == UNDEFINED) { 1415 // scope access and so throw ReferenceError 1416 throw referenceError(global, "not.defined", nameStr); 1417 } 1418 1419 return UNDEFINED; 1420 } 1421 1422 /** 1423 * This is the eval used when 'indirect' eval call is made. 1424 * 1425 * var global = this; 1426 * global.eval("print('hello')"); 1427 * 1428 * @param self eval scope 1429 * @param str eval string 1430 * 1431 * @return the result of eval 1432 */ 1433 public static Object eval(final Object self, final Object str) { 1434 return directEval(self, str, UNDEFINED, UNDEFINED, false); 1435 } 1436 1437 /** 1438 * Direct eval 1439 * 1440 * @param self The scope of eval passed as 'self' 1441 * @param str Evaluated code 1442 * @param callThis "this" to be passed to the evaluated code 1443 * @param location location of the eval call 1444 * @param strict is eval called a strict mode code? 1445 * 1446 * @return the return value of the eval 1447 * 1448 * This is directly invoked from generated when eval(code) is called in user code 1449 */ 1450 public static Object directEval(final Object self, final Object str, final Object callThis, final Object location, final boolean strict) { 1451 if (!isString(str)) { 1452 return str; 1453 } 1454 final Global global = Global.instanceFrom(self); 1455 final ScriptObject scope = self instanceof ScriptObject && ((ScriptObject)self).isScope() ? (ScriptObject)self : global; 1456 1457 return global.getContext().eval(scope, str.toString(), callThis, location, strict, true); 1458 } 1459 1460 /** 1461 * Global print implementation - Nashorn extension 1462 * 1463 * @param self scope 1464 * @param objects arguments to print 1465 * 1466 * @return result of print (undefined) 1467 */ 1468 public static Object print(final Object self, final Object... objects) { 1469 return Global.instanceFrom(self).printImpl(false, objects); 1470 } 1471 1472 /** 1473 * Global println implementation - Nashorn extension 1474 * 1475 * @param self scope 1476 * @param objects arguments to print 1477 * 1478 * @return result of println (undefined) 1479 */ 1480 public static Object println(final Object self, final Object... objects) { 1481 return Global.instanceFrom(self).printImpl(true, objects); 1482 } 1483 1484 /** 1485 * Global load implementation - Nashorn extension 1486 * 1487 * @param self scope 1488 * @param source source to load 1489 * 1490 * @return result of load (undefined) 1491 * 1492 * @throws IOException if source could not be read 1493 */ 1494 public static Object load(final Object self, final Object source) throws IOException { 1495 final Global global = Global.instanceFrom(self); 1496 final ScriptObject scope = self instanceof ScriptObject ? (ScriptObject)self : global; 1497 return global.getContext().load(scope, source); 1498 } 1499 1500 /** 1501 * Global loadWithNewGlobal implementation - Nashorn extension 1502 * 1503 * @param self scope 1504 * @param args from plus (optional) arguments to be passed to the loaded script 1505 * 1506 * @return result of load (may be undefined) 1507 * 1508 * @throws IOException if source could not be read 1509 */ 1510 public static Object loadWithNewGlobal(final Object self, final Object...args) throws IOException { 1511 final Global global = Global.instanceFrom(self); 1512 final int length = args.length; 1513 final boolean hasArgs = 0 < length; 1514 final Object from = hasArgs ? args[0] : UNDEFINED; 1515 final Object[] arguments = hasArgs ? Arrays.copyOfRange(args, 1, length) : args; 1516 1517 return global.getContext().loadWithNewGlobal(from, arguments); 1518 } 1519 1520 /** 1521 * Global exit and quit implementation - Nashorn extension: perform a {@code System.exit} call from the script 1522 * 1523 * @param self self reference 1524 * @param code exit code 1525 * 1526 * @return undefined (will never be reached) 1527 */ 1528 public static Object exit(final Object self, final Object code) { 1529 System.exit(JSType.toInt32(code)); 1530 return UNDEFINED; 1531 } 1532 1533 // builtin prototype accessors 1534 1535 /** 1536 * Get the builtin Object prototype. 1537 * @return the object prototype. 1538 */ 1539 public ScriptObject getObjectPrototype() { 1540 return ScriptFunction.getPrototype(builtinObject); 1541 } 1542 1543 ScriptObject getFunctionPrototype() { 1544 return ScriptFunction.getPrototype(builtinFunction); 1545 } 1546 1547 ScriptObject getArrayPrototype() { 1548 return ScriptFunction.getPrototype(builtinArray); 1549 } 1550 1551 ScriptObject getBooleanPrototype() { 1552 return ScriptFunction.getPrototype(builtinBoolean); 1553 } 1554 1555 ScriptObject getNumberPrototype() { 1556 return ScriptFunction.getPrototype(builtinNumber); 1557 } 1558 1559 ScriptObject getDatePrototype() { 1560 return ScriptFunction.getPrototype(getBuiltinDate()); 1561 } 1562 1563 ScriptObject getRegExpPrototype() { 1564 return ScriptFunction.getPrototype(getBuiltinRegExp()); 1565 } 1566 1567 ScriptObject getStringPrototype() { 1568 return ScriptFunction.getPrototype(builtinString); 1569 } 1570 1571 ScriptObject getErrorPrototype() { 1572 return ScriptFunction.getPrototype(builtinError); 1573 } 1574 1575 ScriptObject getEvalErrorPrototype() { 1576 return ScriptFunction.getPrototype(getBuiltinEvalError()); 1577 } 1578 1579 ScriptObject getRangeErrorPrototype() { 1580 return ScriptFunction.getPrototype(getBuiltinRangeError()); 1581 } 1582 1583 ScriptObject getReferenceErrorPrototype() { 1584 return ScriptFunction.getPrototype(builtinReferenceError); 1585 } 1586 1587 ScriptObject getSyntaxErrorPrototype() { 1588 return ScriptFunction.getPrototype(builtinSyntaxError); 1589 } 1590 1591 ScriptObject getTypeErrorPrototype() { 1592 return ScriptFunction.getPrototype(builtinTypeError); 1593 } 1594 1595 ScriptObject getURIErrorPrototype() { 1596 return ScriptFunction.getPrototype(getBuiltinURIError()); 1597 } 1598 1599 ScriptObject getJavaImporterPrototype() { 1600 return ScriptFunction.getPrototype(getBuiltinJavaImporter()); 1601 } 1602 1603 ScriptObject getJSAdapterPrototype() { 1604 return ScriptFunction.getPrototype(getBuiltinJSAdapter()); 1605 } 1606 1607 private synchronized ScriptFunction getBuiltinArrayBuffer() { 1608 if (this.builtinArrayBuffer == null) { 1609 this.builtinArrayBuffer = initConstructorAndSwitchPoint("ArrayBuffer", ScriptFunction.class); 1610 } 1611 return this.builtinArrayBuffer; 1612 } 1613 1614 ScriptObject getArrayBufferPrototype() { 1615 return ScriptFunction.getPrototype(getBuiltinArrayBuffer()); 1616 } 1617 1618 private synchronized ScriptFunction getBuiltinDataView() { 1619 if (this.builtinDataView == null) { 1620 this.builtinDataView = initConstructorAndSwitchPoint("DataView", ScriptFunction.class); 1621 } 1622 return this.builtinDataView; 1623 } 1624 1625 ScriptObject getDataViewPrototype() { 1626 return ScriptFunction.getPrototype(getBuiltinDataView()); 1627 } 1628 1629 private synchronized ScriptFunction getBuiltinInt8Array() { 1630 if (this.builtinInt8Array == null) { 1631 this.builtinInt8Array = initConstructorAndSwitchPoint("Int8Array", ScriptFunction.class); 1632 } 1633 return this.builtinInt8Array; 1634 } 1635 1636 ScriptObject getInt8ArrayPrototype() { 1637 return ScriptFunction.getPrototype(getBuiltinInt8Array()); 1638 } 1639 1640 private synchronized ScriptFunction getBuiltinUint8Array() { 1641 if (this.builtinUint8Array == null) { 1642 this.builtinUint8Array = initConstructorAndSwitchPoint("Uint8Array", ScriptFunction.class); 1643 } 1644 return this.builtinUint8Array; 1645 } 1646 1647 ScriptObject getUint8ArrayPrototype() { 1648 return ScriptFunction.getPrototype(getBuiltinUint8Array()); 1649 } 1650 1651 private synchronized ScriptFunction getBuiltinUint8ClampedArray() { 1652 if (this.builtinUint8ClampedArray == null) { 1653 this.builtinUint8ClampedArray = initConstructorAndSwitchPoint("Uint8ClampedArray", ScriptFunction.class); 1654 } 1655 return this.builtinUint8ClampedArray; 1656 } 1657 1658 ScriptObject getUint8ClampedArrayPrototype() { 1659 return ScriptFunction.getPrototype(getBuiltinUint8ClampedArray()); 1660 } 1661 1662 private synchronized ScriptFunction getBuiltinInt16Array() { 1663 if (this.builtinInt16Array == null) { 1664 this.builtinInt16Array = initConstructorAndSwitchPoint("Int16Array", ScriptFunction.class); 1665 } 1666 return this.builtinInt16Array; 1667 } 1668 1669 ScriptObject getInt16ArrayPrototype() { 1670 return ScriptFunction.getPrototype(getBuiltinInt16Array()); 1671 } 1672 1673 private synchronized ScriptFunction getBuiltinUint16Array() { 1674 if (this.builtinUint16Array == null) { 1675 this.builtinUint16Array = initConstructorAndSwitchPoint("Uint16Array", ScriptFunction.class); 1676 } 1677 return this.builtinUint16Array; 1678 } 1679 1680 ScriptObject getUint16ArrayPrototype() { 1681 return ScriptFunction.getPrototype(getBuiltinUint16Array()); 1682 } 1683 1684 private synchronized ScriptFunction getBuiltinInt32Array() { 1685 if (this.builtinInt32Array == null) { 1686 this.builtinInt32Array = initConstructorAndSwitchPoint("Int32Array", ScriptFunction.class); 1687 } 1688 return this.builtinInt32Array; 1689 } 1690 1691 ScriptObject getInt32ArrayPrototype() { 1692 return ScriptFunction.getPrototype(getBuiltinInt32Array()); 1693 } 1694 1695 private synchronized ScriptFunction getBuiltinUint32Array() { 1696 if (this.builtinUint32Array == null) { 1697 this.builtinUint32Array = initConstructorAndSwitchPoint("Uint32Array", ScriptFunction.class); 1698 } 1699 return this.builtinUint32Array; 1700 } 1701 1702 ScriptObject getUint32ArrayPrototype() { 1703 return ScriptFunction.getPrototype(getBuiltinUint32Array()); 1704 } 1705 1706 private synchronized ScriptFunction getBuiltinFloat32Array() { 1707 if (this.builtinFloat32Array == null) { 1708 this.builtinFloat32Array = initConstructorAndSwitchPoint("Float32Array", ScriptFunction.class); 1709 } 1710 return this.builtinFloat32Array; 1711 } 1712 1713 ScriptObject getFloat32ArrayPrototype() { 1714 return ScriptFunction.getPrototype(getBuiltinFloat32Array()); 1715 } 1716 1717 private synchronized ScriptFunction getBuiltinFloat64Array() { 1718 if (this.builtinFloat64Array == null) { 1719 this.builtinFloat64Array = initConstructorAndSwitchPoint("Float64Array", ScriptFunction.class); 1720 } 1721 return this.builtinFloat64Array; 1722 } 1723 1724 ScriptObject getFloat64ArrayPrototype() { 1725 return ScriptFunction.getPrototype(getBuiltinFloat64Array()); 1726 } 1727 1728 private ScriptFunction getBuiltinArray() { 1729 return builtinArray; 1730 } 1731 1732 ScriptFunction getTypeErrorThrower() { 1733 return typeErrorThrower; 1734 } 1735 1736 /** 1737 * Called from compiled script code to test if builtin has been overridden 1738 * 1739 * @return true if builtin array has not been overridden 1740 */ 1741 public static boolean isBuiltinArray() { 1742 final Global instance = Global.instance(); 1743 return instance.array == instance.getBuiltinArray(); 1744 } 1745 1746 private ScriptFunction getBuiltinBoolean() { 1747 return builtinBoolean; 1748 } 1749 1750 /** 1751 * Called from compiled script code to test if builtin has been overridden 1752 * 1753 * @return true if builtin boolean has not been overridden 1754 */ 1755 public static boolean isBuiltinBoolean() { 1756 final Global instance = Global.instance(); 1757 return instance._boolean == instance.getBuiltinBoolean(); 1758 } 1759 1760 private synchronized ScriptFunction getBuiltinDate() { 1761 if (this.builtinDate == null) { 1762 this.builtinDate = initConstructorAndSwitchPoint("Date", ScriptFunction.class); 1763 final ScriptObject dateProto = ScriptFunction.getPrototype(builtinDate); 1764 // initialize default date 1765 this.DEFAULT_DATE = new NativeDate(NaN, dateProto); 1766 } 1767 return this.builtinDate; 1768 } 1769 1770 /** 1771 * Called from compiled script code to test if builtin has been overridden 1772 * 1773 * @return true if builtin date has not been overridden 1774 */ 1775 public static boolean isBuiltinDate() { 1776 final Global instance = Global.instance(); 1777 return instance.date == LAZY_SENTINEL || instance.date == instance.getBuiltinDate(); 1778 } 1779 1780 private ScriptFunction getBuiltinError() { 1781 return builtinError; 1782 } 1783 1784 /** 1785 * Called from compiled script code to test if builtin has been overridden 1786 * 1787 * @return true if builtin error has not been overridden 1788 */ 1789 public static boolean isBuiltinError() { 1790 final Global instance = Global.instance(); 1791 return instance.error == instance.getBuiltinError(); 1792 } 1793 1794 private synchronized ScriptFunction getBuiltinEvalError() { 1795 if (this.builtinEvalError == null) { 1796 this.builtinEvalError = initErrorSubtype("EvalError", getErrorPrototype()); 1797 } 1798 return this.builtinEvalError; 1799 } 1800 1801 /** 1802 * Called from compiled script code to test if builtin has been overridden 1803 * 1804 * @return true if builtin eval error has not been overridden 1805 */ 1806 public static boolean isBuiltinEvalError() { 1807 final Global instance = Global.instance(); 1808 return instance.evalError == LAZY_SENTINEL || instance.evalError == instance.getBuiltinEvalError(); 1809 } 1810 1811 private ScriptFunction getBuiltinFunction() { 1812 return builtinFunction; 1813 } 1814 1815 /** 1816 * Called from compiled script code to test if builtin has been overridden 1817 * 1818 * @return true if builtin function has not been overridden 1819 */ 1820 public static boolean isBuiltinFunction() { 1821 final Global instance = Global.instance(); 1822 return instance.function == instance.getBuiltinFunction(); 1823 } 1824 1825 /** 1826 * Get the switchpoint used to check property changes for Function.prototype.apply 1827 * @return the switchpoint guarding apply (same as guarding call, and everything else in function) 1828 */ 1829 public static SwitchPoint getBuiltinFunctionApplySwitchPoint() { 1830 return ScriptFunction.getPrototype(Global.instance().getBuiltinFunction()).getProperty("apply").getBuiltinSwitchPoint(); 1831 } 1832 1833 private static boolean isBuiltinFunctionProperty(final String name) { 1834 final Global instance = Global.instance(); 1835 final ScriptFunction builtinFunction = instance.getBuiltinFunction(); 1836 if (builtinFunction == null) { 1837 return false; //conservative for compile-only mode 1838 } 1839 final boolean isBuiltinFunction = instance.function == builtinFunction; 1840 return isBuiltinFunction && ScriptFunction.getPrototype(builtinFunction).getProperty(name).isBuiltin(); 1841 } 1842 1843 /** 1844 * Check if the Function.prototype.apply has not been replaced 1845 * @return true if Function.prototype.apply has been replaced 1846 */ 1847 public static boolean isBuiltinFunctionPrototypeApply() { 1848 return isBuiltinFunctionProperty("apply"); 1849 } 1850 1851 /** 1852 * Check if the Function.prototype.apply has not been replaced 1853 * @return true if Function.prototype.call has been replaced 1854 */ 1855 public static boolean isBuiltinFunctionPrototypeCall() { 1856 return isBuiltinFunctionProperty("call"); 1857 } 1858 1859 private synchronized ScriptFunction getBuiltinJSAdapter() { 1860 if (this.builtinJSAdapter == null) { 1861 this.builtinJSAdapter = initConstructorAndSwitchPoint("JSAdapter", ScriptFunction.class); 1862 } 1863 return builtinJSAdapter; 1864 } 1865 1866 /** 1867 * Called from compiled script code to test if builtin has been overridden 1868 * 1869 * @return true if builtin JSAdapter has not been overridden 1870 */ 1871 public static boolean isBuiltinJSAdapter() { 1872 final Global instance = Global.instance(); 1873 return instance.jsadapter == LAZY_SENTINEL || instance.jsadapter == instance.getBuiltinJSAdapter(); 1874 } 1875 1876 private synchronized ScriptObject getBuiltinJSON() { 1877 if (this.builtinJSON == null) { 1878 this.builtinJSON = initConstructorAndSwitchPoint("JSON", ScriptObject.class); 1879 } 1880 return this.builtinJSON; 1881 } 1882 1883 /** 1884 * Called from compiled script code to test if builtin has been overridden 1885 * 1886 * @return true if builtin JSON has has not been overridden 1887 */ 1888 public static boolean isBuiltinJSON() { 1889 final Global instance = Global.instance(); 1890 return instance.json == LAZY_SENTINEL || instance.json == instance.getBuiltinJSON(); 1891 } 1892 1893 private ScriptObject getBuiltinJava() { 1894 return builtinJava; 1895 } 1896 1897 /** 1898 * Called from compiled script code to test if builtin has been overridden 1899 * 1900 * @return true if builtin Java has not been overridden 1901 */ 1902 public static boolean isBuiltinJava() { 1903 final Global instance = Global.instance(); 1904 return instance.java == instance.getBuiltinJava(); 1905 } 1906 1907 private ScriptObject getBuiltinJavax() { 1908 return builtinJavax; 1909 } 1910 1911 /** 1912 * Called from compiled script code to test if builtin has been overridden 1913 * 1914 * @return true if builtin Javax has not been overridden 1915 */ 1916 public static boolean isBuiltinJavax() { 1917 final Global instance = Global.instance(); 1918 return instance.javax == instance.getBuiltinJavax(); 1919 } 1920 1921 private synchronized ScriptFunction getBuiltinJavaImporter() { 1922 if (this.builtinJavaImporter == null) { 1923 this.builtinJavaImporter = initConstructor("JavaImporter", ScriptFunction.class); 1924 } 1925 return this.builtinJavaImporter; 1926 } 1927 1928 private synchronized ScriptObject getBuiltinJavaApi() { 1929 if (this.builtinJavaApi == null) { 1930 this.builtinJavaApi = initConstructor("Java", ScriptObject.class); 1931 } 1932 return this.builtinJavaApi; 1933 } 1934 1935 /** 1936 * Called from compiled script code to test if builtin has been overridden 1937 * 1938 * @return true if builtin Java importer has not been overridden 1939 */ 1940 public static boolean isBuiltinJavaImporter() { 1941 final Global instance = Global.instance(); 1942 return instance.javaImporter == LAZY_SENTINEL || instance.javaImporter == instance.getBuiltinJavaImporter(); 1943 } 1944 1945 /** 1946 * Called from compiled script code to test if builtin has been overridden 1947 * 1948 * @return true if builtin math has not been overridden 1949 */ 1950 public static boolean isBuiltinMath() { 1951 final Global instance = Global.instance(); 1952 return instance.math == instance.builtinMath; 1953 } 1954 1955 private ScriptFunction getBuiltinNumber() { 1956 return builtinNumber; 1957 } 1958 1959 /** 1960 * Called from compiled script code to test if builtin has been overridden 1961 * 1962 * @return true if builtin number has not been overridden 1963 */ 1964 public static boolean isBuiltinNumber() { 1965 final Global instance = Global.instance(); 1966 return instance.number == instance.getBuiltinNumber(); 1967 } 1968 1969 private ScriptFunction getBuiltinObject() { 1970 return builtinObject; 1971 } 1972 1973 /** 1974 * Called from compiled script code to test if builtin has been overridden 1975 * 1976 * @return true if builtin object has not been overridden 1977 */ 1978 public static boolean isBuiltinObject() { 1979 final Global instance = Global.instance(); 1980 return instance.object == instance.getBuiltinObject(); 1981 } 1982 1983 private ScriptObject getBuiltinPackages() { 1984 return builtinPackages; 1985 } 1986 1987 /** 1988 * Called from compiled script code to test if builtin has been overridden 1989 * 1990 * @return true if builtin package has not been overridden 1991 */ 1992 public static boolean isBuiltinPackages() { 1993 final Global instance = Global.instance(); 1994 return instance.packages == instance.getBuiltinPackages(); 1995 } 1996 1997 private synchronized ScriptFunction getBuiltinRangeError() { 1998 if (this.builtinRangeError == null) { 1999 this.builtinRangeError = initErrorSubtype("RangeError", getErrorPrototype()); 2000 } 2001 return builtinRangeError; 2002 } 2003 2004 /** 2005 * Called from compiled script code to test if builtin has been overridden 2006 * 2007 * @return true if builtin range error has not been overridden 2008 */ 2009 public static boolean isBuiltinRangeError() { 2010 final Global instance = Global.instance(); 2011 return instance.rangeError == LAZY_SENTINEL || instance.rangeError == instance.getBuiltinRangeError(); 2012 } 2013 2014 private synchronized ScriptFunction getBuiltinReferenceError() { 2015 return builtinReferenceError; 2016 } 2017 2018 /** 2019 * Called from compiled script code to test if builtin has been overridden 2020 * 2021 * @return true if builtin reference error has not been overridden 2022 */ 2023 public static boolean isBuiltinReferenceError() { 2024 final Global instance = Global.instance(); 2025 return instance.referenceError == instance.getBuiltinReferenceError(); 2026 } 2027 2028 private synchronized ScriptFunction getBuiltinRegExp() { 2029 if (this.builtinRegExp == null) { 2030 this.builtinRegExp = initConstructorAndSwitchPoint("RegExp", ScriptFunction.class); 2031 final ScriptObject regExpProto = ScriptFunction.getPrototype(builtinRegExp); 2032 // initialize default regexp object 2033 this.DEFAULT_REGEXP = new NativeRegExp("(?:)", "", this, regExpProto); 2034 // RegExp.prototype should behave like a RegExp object. So copy the 2035 // properties. 2036 regExpProto.addBoundProperties(DEFAULT_REGEXP); 2037 } 2038 return builtinRegExp; 2039 } 2040 2041 /** 2042 * Called from compiled script code to test if builtin has been overridden 2043 * 2044 * @return true if builtin regexp has not been overridden 2045 */ 2046 public static boolean isBuiltinRegExp() { 2047 final Global instance = Global.instance(); 2048 return instance.regexp == LAZY_SENTINEL || instance.regexp == instance.getBuiltinRegExp(); 2049 } 2050 2051 private ScriptFunction getBuiltinString() { 2052 return builtinString; 2053 } 2054 2055 /** 2056 * Called from compiled script code to test if builtin has been overridden 2057 * 2058 * @return true if builtin Java has not been overridden 2059 */ 2060 public static boolean isBuiltinString() { 2061 final Global instance = Global.instance(); 2062 return instance.string == instance.getBuiltinString(); 2063 } 2064 2065 private ScriptFunction getBuiltinSyntaxError() { 2066 return builtinSyntaxError; 2067 } 2068 2069 /** 2070 * Called from compiled script code to test if builtin has been overridden 2071 * 2072 * @return true if builtin syntax error has not been overridden 2073 */ 2074 public static boolean isBuiltinSyntaxError() { 2075 final Global instance = Global.instance(); 2076 return instance.syntaxError == instance.getBuiltinSyntaxError(); 2077 } 2078 2079 private ScriptFunction getBuiltinTypeError() { 2080 return builtinTypeError; 2081 } 2082 2083 /** 2084 * Called from compiled script code to test if builtin has been overridden 2085 * 2086 * @return true if builtin type error has not been overridden 2087 */ 2088 public static boolean isBuiltinTypeError() { 2089 final Global instance = Global.instance(); 2090 return instance.typeError == instance.getBuiltinTypeError(); 2091 } 2092 2093 private synchronized ScriptFunction getBuiltinURIError() { 2094 if (this.builtinURIError == null) { 2095 this.builtinURIError = initErrorSubtype("URIError", getErrorPrototype()); 2096 } 2097 return this.builtinURIError; 2098 } 2099 2100 /** 2101 * Called from compiled script code to test if builtin has been overridden 2102 * 2103 * @return true if builtin URI error has not been overridden 2104 */ 2105 public static boolean isBuiltinURIError() { 2106 final Global instance = Global.instance(); 2107 return instance.uriError == LAZY_SENTINEL || instance.uriError == instance.getBuiltinURIError(); 2108 } 2109 2110 @Override 2111 public String getClassName() { 2112 return "global"; 2113 } 2114 2115 /** 2116 * Copy function used to clone NativeRegExp objects. 2117 * 2118 * @param regexp a NativeRegExp to clone 2119 * 2120 * @return copy of the given regexp object 2121 */ 2122 public static Object regExpCopy(final Object regexp) { 2123 return new NativeRegExp((NativeRegExp)regexp); 2124 } 2125 2126 /** 2127 * Convert given object to NativeRegExp type. 2128 * 2129 * @param obj object to be converted 2130 * @return NativeRegExp instance 2131 */ 2132 public static NativeRegExp toRegExp(final Object obj) { 2133 if (obj instanceof NativeRegExp) { 2134 return (NativeRegExp)obj; 2135 } 2136 return new NativeRegExp(JSType.toString(obj)); 2137 } 2138 2139 /** 2140 * ECMA 9.9 ToObject implementation 2141 * 2142 * @param obj an item for which to run ToObject 2143 * @return ToObject version of given item 2144 */ 2145 public static Object toObject(final Object obj) { 2146 if (obj == null || obj == UNDEFINED) { 2147 throw typeError("not.an.object", ScriptRuntime.safeToString(obj)); 2148 } 2149 2150 if (obj instanceof ScriptObject) { 2151 return obj; 2152 } 2153 2154 return instance().wrapAsObject(obj); 2155 } 2156 2157 /** 2158 * Allocate a new object array. 2159 * 2160 * @param initial object values. 2161 * @return the new array 2162 */ 2163 public static NativeArray allocate(final Object[] initial) { 2164 ArrayData arrayData = ArrayData.allocate(initial); 2165 2166 for (int index = 0; index < initial.length; index++) { 2167 final Object value = initial[index]; 2168 2169 if (value == ScriptRuntime.EMPTY) { 2170 arrayData = arrayData.delete(index); 2171 } 2172 } 2173 2174 return new NativeArray(arrayData); 2175 } 2176 2177 /** 2178 * Allocate a new number array. 2179 * 2180 * @param initial number values. 2181 * @return the new array 2182 */ 2183 public static NativeArray allocate(final double[] initial) { 2184 return new NativeArray(ArrayData.allocate(initial)); 2185 } 2186 2187 /** 2188 * Allocate a new long array. 2189 * 2190 * @param initial number values. 2191 * @return the new array 2192 */ 2193 public static NativeArray allocate(final long[] initial) { 2194 return new NativeArray(ArrayData.allocate(initial)); 2195 } 2196 2197 /** 2198 * Allocate a new integer array. 2199 * 2200 * @param initial number values. 2201 * @return the new array 2202 */ 2203 public static NativeArray allocate(final int[] initial) { 2204 return new NativeArray(ArrayData.allocate(initial)); 2205 } 2206 2207 /** 2208 * Allocate a new object array for arguments. 2209 * 2210 * @param arguments initial arguments passed. 2211 * @param callee reference to the function that uses arguments object 2212 * @param numParams actual number of declared parameters 2213 * 2214 * @return the new array 2215 */ 2216 public static ScriptObject allocateArguments(final Object[] arguments, final Object callee, final int numParams) { 2217 return NativeArguments.allocate(arguments, (ScriptFunction)callee, numParams); 2218 } 2219 2220 /** 2221 * Called from generated to check if given function is the builtin 'eval'. If 2222 * eval is used in a script, a lot of optimizations and assumptions cannot be done. 2223 * 2224 * @param fn function object that is checked 2225 * @return true if fn is the builtin eval 2226 */ 2227 public static boolean isEval(final Object fn) { 2228 return fn == Global.instance().builtinEval; 2229 } 2230 2231 /** 2232 * Called from generated to replace a location property placeholder with the actual location property value. 2233 * 2234 * @param placeholder the value tested for being a placeholder for a location property 2235 * @param locationProperty the actual value for the location property 2236 * @return locationProperty if placeholder is indeed a placeholder for a location property, the placeholder otherwise 2237 */ 2238 public static Object replaceLocationPropertyPlaceholder(final Object placeholder, final Object locationProperty) { 2239 return isLocationPropertyPlaceholder(placeholder) ? locationProperty : placeholder; 2240 } 2241 2242 /** 2243 * Called from runtime internals to check if the passed value is a location property placeholder. 2244 * @param placeholder the value tested for being a placeholder for a location property 2245 * @return true if the value is a placeholder, false otherwise. 2246 */ 2247 public static boolean isLocationPropertyPlaceholder(final Object placeholder) { 2248 return placeholder == LOCATION_PROPERTY_PLACEHOLDER; 2249 } 2250 2251 /** 2252 * Create a new RegExp object. 2253 * 2254 * @param expression Regular expression. 2255 * @param options Search options. 2256 * 2257 * @return New RegExp object. 2258 */ 2259 public static Object newRegExp(final String expression, final String options) { 2260 if (options == null) { 2261 return new NativeRegExp(expression); 2262 } 2263 return new NativeRegExp(expression, options); 2264 } 2265 2266 /** 2267 * Get the object prototype 2268 * 2269 * @return the object prototype 2270 */ 2271 public static ScriptObject objectPrototype() { 2272 return Global.instance().getObjectPrototype(); 2273 } 2274 2275 /** 2276 * Create a new empty object instance. 2277 * 2278 * @return New empty object. 2279 */ 2280 public static ScriptObject newEmptyInstance() { 2281 return Global.instance().newObject(); 2282 } 2283 2284 /** 2285 * Check if a given object is a ScriptObject, raises an exception if this is 2286 * not the case 2287 * 2288 * @param obj and object to check 2289 * @return the script object 2290 */ 2291 public static ScriptObject checkObject(final Object obj) { 2292 if (!(obj instanceof ScriptObject)) { 2293 throw typeError("not.an.object", ScriptRuntime.safeToString(obj)); 2294 } 2295 return (ScriptObject)obj; 2296 } 2297 2298 /** 2299 * ECMA 9.10 - implementation of CheckObjectCoercible, i.e. raise an exception 2300 * if this object is null or undefined. 2301 * 2302 * @param obj an object to check 2303 */ 2304 public static void checkObjectCoercible(final Object obj) { 2305 if (obj == null || obj == UNDEFINED) { 2306 throw typeError("not.an.object", ScriptRuntime.safeToString(obj)); 2307 } 2308 } 2309 2310 /** 2311 * Get the current split state. 2312 * 2313 * @return current split state 2314 */ 2315 @Override 2316 public int getSplitState() { 2317 return splitState; 2318 } 2319 2320 /** 2321 * Set the current split state. 2322 * 2323 * @param state current split state 2324 */ 2325 @Override 2326 public void setSplitState(final int state) { 2327 splitState = state; 2328 } 2329 2330 /** 2331 * Return the ES6 global scope for lexically declared bindings. 2332 * @return the ES6 lexical global scope. 2333 */ 2334 public final ScriptObject getLexicalScope() { 2335 assert context.getEnv()._es6; 2336 return lexicalScope; 2337 } 2338 2339 @Override 2340 public void addBoundProperties(final ScriptObject source, final jdk.nashorn.internal.runtime.Property[] properties) { 2341 PropertyMap ownMap = getMap(); 2342 LexicalScope lexScope = null; 2343 PropertyMap lexicalMap = null; 2344 boolean hasLexicalDefinitions = false; 2345 2346 if (context.getEnv()._es6) { 2347 lexScope = (LexicalScope) getLexicalScope(); 2348 lexicalMap = lexScope.getMap(); 2349 2350 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2351 if (property.isLexicalBinding()) { 2352 hasLexicalDefinitions = true; 2353 } 2354 // ES6 15.1.8 steps 6. and 7. 2355 final jdk.nashorn.internal.runtime.Property globalProperty = ownMap.findProperty(property.getKey()); 2356 if (globalProperty != null && !globalProperty.isConfigurable() && property.isLexicalBinding()) { 2357 throw ECMAErrors.syntaxError("redeclare.variable", property.getKey()); 2358 } 2359 final jdk.nashorn.internal.runtime.Property lexicalProperty = lexicalMap.findProperty(property.getKey()); 2360 if (lexicalProperty != null && !property.isConfigurable()) { 2361 throw ECMAErrors.syntaxError("redeclare.variable", property.getKey()); 2362 } 2363 } 2364 } 2365 2366 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2367 if (property.isLexicalBinding()) { 2368 assert lexScope != null; 2369 lexicalMap = lexScope.addBoundProperty(lexicalMap, source, property); 2370 2371 if (ownMap.findProperty(property.getKey()) != null) { 2372 // If property exists in the global object invalidate any global constant call sites. 2373 invalidateGlobalConstant(property.getKey()); 2374 } 2375 } else { 2376 ownMap = addBoundProperty(ownMap, source, property); 2377 } 2378 } 2379 2380 setMap(ownMap); 2381 2382 if (hasLexicalDefinitions) { 2383 assert lexScope != null; 2384 lexScope.setMap(lexicalMap); 2385 invalidateLexicalSwitchPoint(); 2386 } 2387 } 2388 2389 @Override 2390 public GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) { 2391 final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); 2392 final boolean isScope = NashornCallSiteDescriptor.isScope(desc); 2393 2394 if (lexicalScope != null && isScope && !NashornCallSiteDescriptor.isApplyToCall(desc)) { 2395 if (lexicalScope.hasOwnProperty(name)) { 2396 return lexicalScope.findGetMethod(desc, request, operator); 2397 } 2398 } 2399 2400 final GuardedInvocation invocation = super.findGetMethod(desc, request, operator); 2401 2402 // We want to avoid adding our generic lexical scope switchpoint to global constant invocations, 2403 // because those are invalidated per-key in the addBoundProperties method above. 2404 // We therefor check if the invocation does already have a switchpoint and the property is non-inherited, 2405 // assuming this only applies to global constants. If other non-inherited properties will 2406 // start using switchpoints some time in the future we'll have to revisit this. 2407 if (isScope && context.getEnv()._es6 && (invocation.getSwitchPoints() == null || !hasOwnProperty(name))) { 2408 return invocation.addSwitchPoint(getLexicalScopeSwitchPoint()); 2409 } 2410 2411 return invocation; 2412 } 2413 2414 @Override 2415 protected FindProperty findProperty(final String key, final boolean deep, final ScriptObject start) { 2416 if (lexicalScope != null && start != this && start.isScope()) { 2417 final FindProperty find = lexicalScope.findProperty(key, false); 2418 if (find != null) { 2419 return find; 2420 } 2421 } 2422 return super.findProperty(key, deep, start); 2423 } 2424 2425 @Override 2426 public GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) { 2427 final boolean isScope = NashornCallSiteDescriptor.isScope(desc); 2428 2429 if (lexicalScope != null && isScope) { 2430 final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); 2431 if (lexicalScope.hasOwnProperty(name)) { 2432 return lexicalScope.findSetMethod(desc, request); 2433 } 2434 } 2435 2436 final GuardedInvocation invocation = super.findSetMethod(desc, request); 2437 2438 if (isScope && context.getEnv()._es6) { 2439 return invocation.addSwitchPoint(getLexicalScopeSwitchPoint()); 2440 } 2441 2442 return invocation; 2443 } 2444 2445 /** 2446 * Adds jjs shell interactive mode builtin functions to global scope. 2447 */ 2448 public void addShellBuiltins() { 2449 Object value = ScriptFunctionImpl.makeFunction("input", ShellFunctions.INPUT); 2450 addOwnProperty("input", Attribute.NOT_ENUMERABLE, value); 2451 2452 value = ScriptFunctionImpl.makeFunction("evalinput", ShellFunctions.EVALINPUT); 2453 addOwnProperty("evalinput", Attribute.NOT_ENUMERABLE, value); 2454 } 2455 2456 private synchronized SwitchPoint getLexicalScopeSwitchPoint() { 2457 SwitchPoint switchPoint = lexicalScopeSwitchPoint; 2458 if (switchPoint == null || switchPoint.hasBeenInvalidated()) { 2459 switchPoint = lexicalScopeSwitchPoint = new SwitchPoint(); 2460 } 2461 return switchPoint; 2462 } 2463 2464 private synchronized void invalidateLexicalSwitchPoint() { 2465 if (lexicalScopeSwitchPoint != null) { 2466 context.getLogger(GlobalConstants.class).info("Invalidating non-constant globals on lexical scope update"); 2467 SwitchPoint.invalidateAll(new SwitchPoint[]{ lexicalScopeSwitchPoint }); 2468 } 2469 } 2470 2471 2472 @SuppressWarnings("unused") 2473 private static Object lexicalScopeFilter(final Object self) { 2474 if (self instanceof Global) { 2475 return ((Global) self).getLexicalScope(); 2476 } 2477 return self; 2478 } 2479 2480 private <T extends ScriptObject> T initConstructorAndSwitchPoint(final String name, final Class<T> clazz) { 2481 final T func = initConstructor(name, clazz); 2482 tagBuiltinProperties(name, func); 2483 return func; 2484 } 2485 2486 private void init(final ScriptEngine eng) { 2487 assert Context.getGlobal() == this : "this global is not set as current"; 2488 2489 final ScriptEnvironment env = getContext().getEnv(); 2490 2491 // initialize Function and Object constructor 2492 initFunctionAndObject(); 2493 2494 // Now fix Global's own proto. 2495 this.setInitialProto(getObjectPrototype()); 2496 2497 // initialize global function properties 2498 this.eval = this.builtinEval = ScriptFunctionImpl.makeFunction("eval", EVAL); 2499 2500 this.parseInt = ScriptFunctionImpl.makeFunction("parseInt", GlobalFunctions.PARSEINT, 2501 new Specialization[] { 2502 new Specialization(GlobalFunctions.PARSEINT_Z), 2503 new Specialization(GlobalFunctions.PARSEINT_I), 2504 new Specialization(GlobalFunctions.PARSEINT_J), 2505 new Specialization(GlobalFunctions.PARSEINT_OI), 2506 new Specialization(GlobalFunctions.PARSEINT_O) }); 2507 this.parseFloat = ScriptFunctionImpl.makeFunction("parseFloat", GlobalFunctions.PARSEFLOAT); 2508 this.isNaN = ScriptFunctionImpl.makeFunction("isNaN", GlobalFunctions.IS_NAN, 2509 new Specialization[] { 2510 new Specialization(GlobalFunctions.IS_NAN_I), 2511 new Specialization(GlobalFunctions.IS_NAN_J), 2512 new Specialization(GlobalFunctions.IS_NAN_D) }); 2513 this.parseFloat = ScriptFunctionImpl.makeFunction("parseFloat", GlobalFunctions.PARSEFLOAT); 2514 this.isNaN = ScriptFunctionImpl.makeFunction("isNaN", GlobalFunctions.IS_NAN); 2515 this.isFinite = ScriptFunctionImpl.makeFunction("isFinite", GlobalFunctions.IS_FINITE); 2516 this.encodeURI = ScriptFunctionImpl.makeFunction("encodeURI", GlobalFunctions.ENCODE_URI); 2517 this.encodeURIComponent = ScriptFunctionImpl.makeFunction("encodeURIComponent", GlobalFunctions.ENCODE_URICOMPONENT); 2518 this.decodeURI = ScriptFunctionImpl.makeFunction("decodeURI", GlobalFunctions.DECODE_URI); 2519 this.decodeURIComponent = ScriptFunctionImpl.makeFunction("decodeURIComponent", GlobalFunctions.DECODE_URICOMPONENT); 2520 this.escape = ScriptFunctionImpl.makeFunction("escape", GlobalFunctions.ESCAPE); 2521 this.unescape = ScriptFunctionImpl.makeFunction("unescape", GlobalFunctions.UNESCAPE); 2522 this.print = ScriptFunctionImpl.makeFunction("print", env._print_no_newline ? PRINT : PRINTLN); 2523 this.load = ScriptFunctionImpl.makeFunction("load", LOAD); 2524 this.loadWithNewGlobal = ScriptFunctionImpl.makeFunction("loadWithNewGlobal", LOAD_WITH_NEW_GLOBAL); 2525 this.exit = ScriptFunctionImpl.makeFunction("exit", EXIT); 2526 this.quit = ScriptFunctionImpl.makeFunction("quit", EXIT); 2527 2528 // built-in constructors 2529 this.builtinArray = initConstructorAndSwitchPoint("Array", ScriptFunction.class); 2530 this.builtinBoolean = initConstructorAndSwitchPoint("Boolean", ScriptFunction.class); 2531 this.builtinNumber = initConstructorAndSwitchPoint("Number", ScriptFunction.class); 2532 this.builtinString = initConstructorAndSwitchPoint("String", ScriptFunction.class); 2533 this.builtinMath = initConstructorAndSwitchPoint("Math", ScriptObject.class); 2534 2535 // initialize String.prototype.length to 0 2536 // add String.prototype.length 2537 final ScriptObject stringPrototype = getStringPrototype(); 2538 stringPrototype.addOwnProperty("length", Attribute.NON_ENUMERABLE_CONSTANT, 0.0); 2539 2540 // set isArray flag on Array.prototype 2541 final ScriptObject arrayPrototype = getArrayPrototype(); 2542 arrayPrototype.setIsArray(); 2543 2544 // Error stuff 2545 initErrorObjects(); 2546 2547 // java access 2548 if (! env._no_java) { 2549 this.javaApi = LAZY_SENTINEL; 2550 this.javaImporter = LAZY_SENTINEL; 2551 initJavaAccess(); 2552 } 2553 2554 if (! env._no_typed_arrays) { 2555 this.arrayBuffer = LAZY_SENTINEL; 2556 this.dataView = LAZY_SENTINEL; 2557 this.int8Array = LAZY_SENTINEL; 2558 this.uint8Array = LAZY_SENTINEL; 2559 this.uint8ClampedArray = LAZY_SENTINEL; 2560 this.int16Array = LAZY_SENTINEL; 2561 this.uint16Array = LAZY_SENTINEL; 2562 this.int32Array = LAZY_SENTINEL; 2563 this.uint32Array = LAZY_SENTINEL; 2564 this.float32Array = LAZY_SENTINEL; 2565 this.float64Array = LAZY_SENTINEL; 2566 } 2567 2568 if (env._scripting) { 2569 initScripting(env); 2570 } 2571 2572 if (Context.DEBUG) { 2573 boolean debugOkay; 2574 final SecurityManager sm = System.getSecurityManager(); 2575 if (sm != null) { 2576 try { 2577 sm.checkPermission(new RuntimePermission(Context.NASHORN_DEBUG_MODE)); 2578 debugOkay = true; 2579 } catch (final SecurityException ignored) { 2580 // if no permission, don't initialize Debug object 2581 debugOkay = false; 2582 } 2583 2584 } else { 2585 debugOkay = true; 2586 } 2587 2588 if (debugOkay) { 2589 initDebug(); 2590 } 2591 } 2592 2593 copyBuiltins(); 2594 2595 // expose script (command line) arguments as "arguments" property of global 2596 arguments = wrapAsObject(env.getArguments().toArray()); 2597 if (env._scripting) { 2598 // synonym for "arguments" in scripting mode 2599 addOwnProperty("$ARG", Attribute.NOT_ENUMERABLE, arguments); 2600 } 2601 2602 if (eng != null) { 2603 // default file name 2604 addOwnProperty(ScriptEngine.FILENAME, Attribute.NOT_ENUMERABLE, null); 2605 // __noSuchProperty__ hook for ScriptContext search of missing variables 2606 final ScriptFunction noSuchProp = ScriptFunctionImpl.makeStrictFunction(NO_SUCH_PROPERTY_NAME, NO_SUCH_PROPERTY); 2607 addOwnProperty(NO_SUCH_PROPERTY_NAME, Attribute.NOT_ENUMERABLE, noSuchProp); 2608 } 2609 } 2610 2611 private void initErrorObjects() { 2612 // Error objects 2613 this.builtinError = initConstructor("Error", ScriptFunction.class); 2614 final ScriptObject errorProto = getErrorPrototype(); 2615 2616 // Nashorn specific accessors on Error.prototype - stack, lineNumber, columnNumber and fileName 2617 final ScriptFunction getStack = ScriptFunctionImpl.makeFunction("getStack", NativeError.GET_STACK); 2618 final ScriptFunction setStack = ScriptFunctionImpl.makeFunction("setStack", NativeError.SET_STACK); 2619 errorProto.addOwnProperty("stack", Attribute.NOT_ENUMERABLE, getStack, setStack); 2620 final ScriptFunction getLineNumber = ScriptFunctionImpl.makeFunction("getLineNumber", NativeError.GET_LINENUMBER); 2621 final ScriptFunction setLineNumber = ScriptFunctionImpl.makeFunction("setLineNumber", NativeError.SET_LINENUMBER); 2622 errorProto.addOwnProperty("lineNumber", Attribute.NOT_ENUMERABLE, getLineNumber, setLineNumber); 2623 final ScriptFunction getColumnNumber = ScriptFunctionImpl.makeFunction("getColumnNumber", NativeError.GET_COLUMNNUMBER); 2624 final ScriptFunction setColumnNumber = ScriptFunctionImpl.makeFunction("setColumnNumber", NativeError.SET_COLUMNNUMBER); 2625 errorProto.addOwnProperty("columnNumber", Attribute.NOT_ENUMERABLE, getColumnNumber, setColumnNumber); 2626 final ScriptFunction getFileName = ScriptFunctionImpl.makeFunction("getFileName", NativeError.GET_FILENAME); 2627 final ScriptFunction setFileName = ScriptFunctionImpl.makeFunction("setFileName", NativeError.SET_FILENAME); 2628 errorProto.addOwnProperty("fileName", Attribute.NOT_ENUMERABLE, getFileName, setFileName); 2629 2630 // ECMA 15.11.4.2 Error.prototype.name 2631 // Error.prototype.name = "Error"; 2632 errorProto.set(NativeError.NAME, "Error", 0); 2633 // ECMA 15.11.4.3 Error.prototype.message 2634 // Error.prototype.message = ""; 2635 errorProto.set(NativeError.MESSAGE, "", 0); 2636 2637 tagBuiltinProperties("Error", builtinError); 2638 2639 this.builtinReferenceError = initErrorSubtype("ReferenceError", errorProto); 2640 this.builtinSyntaxError = initErrorSubtype("SyntaxError", errorProto); 2641 this.builtinTypeError = initErrorSubtype("TypeError", errorProto); 2642 } 2643 2644 private ScriptFunction initErrorSubtype(final String name, final ScriptObject errorProto) { 2645 final ScriptFunction cons = initConstructor(name, ScriptFunction.class); 2646 final ScriptObject prototype = ScriptFunction.getPrototype(cons); 2647 prototype.set(NativeError.NAME, name, 0); 2648 prototype.set(NativeError.MESSAGE, "", 0); 2649 prototype.setInitialProto(errorProto); 2650 tagBuiltinProperties(name, cons); 2651 return cons; 2652 } 2653 2654 private void initJavaAccess() { 2655 final ScriptObject objectProto = getObjectPrototype(); 2656 this.builtinPackages = new NativeJavaPackage("", objectProto); 2657 this.builtinCom = new NativeJavaPackage("com", objectProto); 2658 this.builtinEdu = new NativeJavaPackage("edu", objectProto); 2659 this.builtinJava = new NativeJavaPackage("java", objectProto); 2660 this.builtinJavafx = new NativeJavaPackage("javafx", objectProto); 2661 this.builtinJavax = new NativeJavaPackage("javax", objectProto); 2662 this.builtinOrg = new NativeJavaPackage("org", objectProto); 2663 } 2664 2665 private void initScripting(final ScriptEnvironment scriptEnv) { 2666 Object value; 2667 value = ScriptFunctionImpl.makeFunction("readLine", ScriptingFunctions.READLINE); 2668 addOwnProperty("readLine", Attribute.NOT_ENUMERABLE, value); 2669 2670 value = ScriptFunctionImpl.makeFunction("readFully", ScriptingFunctions.READFULLY); 2671 addOwnProperty("readFully", Attribute.NOT_ENUMERABLE, value); 2672 2673 final String execName = ScriptingFunctions.EXEC_NAME; 2674 value = ScriptFunctionImpl.makeFunction(execName, ScriptingFunctions.EXEC); 2675 addOwnProperty(execName, Attribute.NOT_ENUMERABLE, value); 2676 2677 // Nashorn extension: global.echo (scripting-mode-only) 2678 // alias for "print" 2679 value = get("print"); 2680 addOwnProperty("echo", Attribute.NOT_ENUMERABLE, value); 2681 2682 // Nashorn extension: global.$OPTIONS (scripting-mode-only) 2683 final ScriptObject options = newObject(); 2684 copyOptions(options, scriptEnv); 2685 addOwnProperty("$OPTIONS", Attribute.NOT_ENUMERABLE, options); 2686 2687 // Nashorn extension: global.$ENV (scripting-mode-only) 2688 if (System.getSecurityManager() == null) { 2689 // do not fill $ENV if we have a security manager around 2690 // Retrieve current state of ENV variables. 2691 final ScriptObject env = newObject(); 2692 env.putAll(System.getenv(), scriptEnv._strict); 2693 addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, env); 2694 } else { 2695 addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2696 } 2697 2698 // add other special properties for exec support 2699 addOwnProperty(ScriptingFunctions.OUT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2700 addOwnProperty(ScriptingFunctions.ERR_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2701 addOwnProperty(ScriptingFunctions.EXIT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2702 } 2703 2704 private static void copyOptions(final ScriptObject options, final ScriptEnvironment scriptEnv) { 2705 for (final Field f : scriptEnv.getClass().getFields()) { 2706 try { 2707 options.set(f.getName(), f.get(scriptEnv), 0); 2708 } catch (final IllegalArgumentException | IllegalAccessException exp) { 2709 throw new RuntimeException(exp); 2710 } 2711 } 2712 } 2713 2714 private void copyBuiltins() { 2715 this.array = this.builtinArray; 2716 this._boolean = this.builtinBoolean; 2717 this.error = this.builtinError; 2718 this.function = this.builtinFunction; 2719 this.com = this.builtinCom; 2720 this.edu = this.builtinEdu; 2721 this.java = this.builtinJava; 2722 this.javafx = this.builtinJavafx; 2723 this.javax = this.builtinJavax; 2724 this.org = this.builtinOrg; 2725 this.math = this.builtinMath; 2726 this.number = this.builtinNumber; 2727 this.object = this.builtinObject; 2728 this.packages = this.builtinPackages; 2729 this.referenceError = this.builtinReferenceError; 2730 this.string = this.builtinString; 2731 this.syntaxError = this.builtinSyntaxError; 2732 this.typeError = this.builtinTypeError; 2733 } 2734 2735 private void initDebug() { 2736 this.addOwnProperty("Debug", Attribute.NOT_ENUMERABLE, initConstructor("Debug", ScriptObject.class)); 2737 } 2738 2739 private Object printImpl(final boolean newLine, final Object... objects) { 2740 @SuppressWarnings("resource") 2741 final PrintWriter out = scontext != null? new PrintWriter(scontext.getWriter()) : getContext().getEnv().getOut(); 2742 final StringBuilder sb = new StringBuilder(); 2743 2744 for (final Object obj : objects) { 2745 if (sb.length() != 0) { 2746 sb.append(' '); 2747 } 2748 2749 sb.append(JSType.toString(obj)); 2750 } 2751 2752 // Print all at once to ensure thread friendly result. 2753 if (newLine) { 2754 out.println(sb.toString()); 2755 } else { 2756 out.print(sb.toString()); 2757 } 2758 2759 out.flush(); 2760 2761 return UNDEFINED; 2762 } 2763 2764 private <T extends ScriptObject> T initConstructor(final String name, final Class<T> clazz) { 2765 try { 2766 // Assuming class name pattern for built-in JS constructors. 2767 final StringBuilder sb = new StringBuilder("jdk.nashorn.internal.objects."); 2768 2769 sb.append("Native"); 2770 sb.append(name); 2771 sb.append("$Constructor"); 2772 2773 final Class<?> funcClass = Class.forName(sb.toString()); 2774 final T res = clazz.cast(funcClass.newInstance()); 2775 2776 if (res instanceof ScriptFunction) { 2777 // All global constructor prototypes are not-writable, 2778 // not-enumerable and not-configurable. 2779 final ScriptFunction func = (ScriptFunction)res; 2780 func.modifyOwnProperty(func.getProperty("prototype"), Attribute.NON_ENUMERABLE_CONSTANT); 2781 } 2782 2783 if (res.getProto() == null) { 2784 res.setInitialProto(getObjectPrototype()); 2785 } 2786 2787 res.setIsBuiltin(); 2788 2789 return res; 2790 } catch (final ClassNotFoundException | InstantiationException | IllegalAccessException e) { 2791 throw new RuntimeException(e); 2792 } 2793 } 2794 2795 private List<jdk.nashorn.internal.runtime.Property> extractBuiltinProperties(final String name, final ScriptObject func) { 2796 final List<jdk.nashorn.internal.runtime.Property> list = new ArrayList<>(); 2797 2798 list.addAll(Arrays.asList(func.getMap().getProperties())); 2799 2800 if (func instanceof ScriptFunction) { 2801 final ScriptObject proto = ScriptFunction.getPrototype((ScriptFunction)func); 2802 if (proto != null) { 2803 list.addAll(Arrays.asList(proto.getMap().getProperties())); 2804 } 2805 } 2806 2807 final jdk.nashorn.internal.runtime.Property prop = getProperty(name); 2808 if (prop != null) { 2809 list.add(prop); 2810 } 2811 2812 return list; 2813 } 2814 2815 /** 2816 * Given a builtin object, traverse its properties recursively and associate them with a name that 2817 * will be a key to their invalidation switchpoint. 2818 * @param name name for key 2819 * @param func builtin script object 2820 */ 2821 private void tagBuiltinProperties(final String name, final ScriptObject func) { 2822 SwitchPoint sp = context.getBuiltinSwitchPoint(name); 2823 if (sp == null) { 2824 sp = context.newBuiltinSwitchPoint(name); 2825 } 2826 2827 //get all builtin properties in this builtin object and register switchpoints keyed on the propery name, 2828 //one overwrite destroys all for now, e.g. Function.prototype.apply = 17; also destroys Function.prototype.call etc 2829 for (final jdk.nashorn.internal.runtime.Property prop : extractBuiltinProperties(name, func)) { 2830 prop.setBuiltinSwitchPoint(sp); 2831 } 2832 } 2833 2834 // Function and Object constructors are inter-dependent. Also, 2835 // Function.prototype 2836 // functions are not properly initialized. We fix the references here. 2837 // NOTE: be careful if you want to re-order the operations here. You may 2838 // have 2839 // to play with object references carefully!! 2840 private void initFunctionAndObject() { 2841 // First-n-foremost is Function 2842 2843 this.builtinFunction = initConstructor("Function", ScriptFunction.class); 2844 2845 // create global anonymous function 2846 final ScriptFunction anon = ScriptFunctionImpl.newAnonymousFunction(); 2847 // need to copy over members of Function.prototype to anon function 2848 anon.addBoundProperties(getFunctionPrototype()); 2849 2850 // Function.prototype === Object.getPrototypeOf(Function) === 2851 // <anon-function> 2852 builtinFunction.setInitialProto(anon); 2853 builtinFunction.setPrototype(anon); 2854 anon.set("constructor", builtinFunction, 0); 2855 anon.deleteOwnProperty(anon.getMap().findProperty("prototype")); 2856 2857 // use "getter" so that [[ThrowTypeError]] function's arity is 0 - as specified in step 10 of section 13.2.3 2858 this.typeErrorThrower = new ScriptFunctionImpl("TypeErrorThrower", Lookup.TYPE_ERROR_THROWER_GETTER, null, null, 0); 2859 typeErrorThrower.setPrototype(UNDEFINED); 2860 // Non-constructor built-in functions do not have "prototype" property 2861 typeErrorThrower.deleteOwnProperty(typeErrorThrower.getMap().findProperty("prototype")); 2862 typeErrorThrower.preventExtensions(); 2863 2864 // now initialize Object 2865 this.builtinObject = initConstructor("Object", ScriptFunction.class); 2866 final ScriptObject ObjectPrototype = getObjectPrototype(); 2867 // Object.getPrototypeOf(Function.prototype) === Object.prototype 2868 anon.setInitialProto(ObjectPrototype); 2869 2870 // ES6 draft compliant __proto__ property of Object.prototype 2871 // accessors on Object.prototype for "__proto__" 2872 final ScriptFunction getProto = ScriptFunctionImpl.makeFunction("getProto", NativeObject.GET__PROTO__); 2873 final ScriptFunction setProto = ScriptFunctionImpl.makeFunction("setProto", NativeObject.SET__PROTO__); 2874 ObjectPrototype.addOwnProperty("__proto__", Attribute.NOT_ENUMERABLE, getProto, setProto); 2875 2876 // Function valued properties of Function.prototype were not properly 2877 // initialized. Because, these were created before global.function and 2878 // global.object were not initialized. 2879 jdk.nashorn.internal.runtime.Property[] properties = getFunctionPrototype().getMap().getProperties(); 2880 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2881 final Object key = property.getKey(); 2882 final Object value = builtinFunction.get(key); 2883 2884 if (value instanceof ScriptFunction && value != anon) { 2885 final ScriptFunction func = (ScriptFunction)value; 2886 func.setInitialProto(getFunctionPrototype()); 2887 final ScriptObject prototype = ScriptFunction.getPrototype(func); 2888 if (prototype != null) { 2889 prototype.setInitialProto(ObjectPrototype); 2890 } 2891 } 2892 } 2893 2894 // For function valued properties of Object and Object.prototype, make 2895 // sure prototype's proto chain ends with Object.prototype 2896 for (final jdk.nashorn.internal.runtime.Property property : builtinObject.getMap().getProperties()) { 2897 final Object key = property.getKey(); 2898 final Object value = builtinObject.get(key); 2899 2900 if (value instanceof ScriptFunction) { 2901 final ScriptFunction func = (ScriptFunction)value; 2902 final ScriptObject prototype = ScriptFunction.getPrototype(func); 2903 if (prototype != null) { 2904 prototype.setInitialProto(ObjectPrototype); 2905 } 2906 } 2907 } 2908 2909 properties = getObjectPrototype().getMap().getProperties(); 2910 2911 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2912 final Object key = property.getKey(); 2913 if (key.equals("constructor")) { 2914 continue; 2915 } 2916 2917 final Object value = ObjectPrototype.get(key); 2918 if (value instanceof ScriptFunction) { 2919 final ScriptFunction func = (ScriptFunction)value; 2920 final ScriptObject prototype = ScriptFunction.getPrototype(func); 2921 if (prototype != null) { 2922 prototype.setInitialProto(ObjectPrototype); 2923 } 2924 } 2925 } 2926 2927 tagBuiltinProperties("Object", builtinObject); 2928 tagBuiltinProperties("Function", builtinFunction); 2929 tagBuiltinProperties("Function", anon); 2930 } 2931 2932 private static MethodHandle findOwnMH_S(final String name, final Class<?> rtype, final Class<?>... types) { 2933 return MH.findStatic(MethodHandles.lookup(), Global.class, name, MH.type(rtype, types)); 2934 } 2935 2936 RegExpResult getLastRegExpResult() { 2937 return lastRegExpResult; 2938 } 2939 2940 void setLastRegExpResult(final RegExpResult regExpResult) { 2941 this.lastRegExpResult = regExpResult; 2942 } 2943 2944 @Override 2945 protected boolean isGlobal() { 2946 return true; 2947 } 2948 2949 /** 2950 * A class representing the ES6 global lexical scope. 2951 */ 2952 private static class LexicalScope extends ScriptObject { 2953 2954 LexicalScope(final Global global) { 2955 super(global, PropertyMap.newMap()); 2956 } 2957 2958 @Override 2959 protected GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) { 2960 return filterInvocation(super.findGetMethod(desc, request, operator)); 2961 } 2962 2963 @Override 2964 protected GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) { 2965 return filterInvocation(super.findSetMethod(desc, request)); 2966 } 2967 2968 @Override 2969 protected PropertyMap addBoundProperty(final PropertyMap propMap, final ScriptObject source, final jdk.nashorn.internal.runtime.Property property) { 2970 // We override this method just to make it callable by Global 2971 return super.addBoundProperty(propMap, source, property); 2972 } 2973 2974 private static GuardedInvocation filterInvocation(final GuardedInvocation invocation) { 2975 final MethodType type = invocation.getInvocation().type(); 2976 return invocation.asType(type.changeParameterType(0, Object.class)).filterArguments(0, LEXICAL_SCOPE_FILTER); 2977 } 2978 } 2979 2980} 2981