1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
|
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Norris Boyd
* Igor Bukanov
* Frank Mitchell
* Mike Shaver
* Kemal Bayram
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript;
import java.io.*;
import java.lang.reflect.*;
import java.util.Hashtable;
import java.util.Date;
/**
* This class reflects non-Array Java objects into the JavaScript environment. It
* reflect fields directly, and uses NativeJavaMethod objects to reflect (possibly
* overloaded) methods.<p>
*
* @author Mike Shaver
* @see NativeJavaArray
* @see NativeJavaPackage
* @see NativeJavaClass
*/
public class NativeJavaObject implements Scriptable, Wrapper, Serializable
{
static final long serialVersionUID = -6948590651130498591L;
public NativeJavaObject() { }
public NativeJavaObject(Scriptable scope, Object javaObject,
Class staticType)
{
this(scope, javaObject, staticType, false);
}
public NativeJavaObject(Scriptable scope, Object javaObject,
Class staticType, boolean isAdapter)
{
this.parent = ScriptableObject.getVeryTopLevelScope(scope); // APPJET
this.javaObject = javaObject;
this.staticType = staticType;
this.isAdapter = isAdapter;
initMembers();
}
protected void initMembers() {
Class dynamicType;
if (javaObject != null) {
dynamicType = javaObject.getClass();
} else {
dynamicType = staticType;
}
members = JavaMembers.lookupClass(parent, dynamicType, staticType,
isAdapter);
fieldAndMethods
= members.getFieldAndMethodsObjects(this, javaObject, false);
}
public boolean has(String name, Scriptable start) {
return members.has(name, false);
}
public boolean has(int index, Scriptable start) {
return false;
}
public Object get(String name, Scriptable start) {
if (fieldAndMethods != null) {
Object result = fieldAndMethods.get(name);
if (result != null) {
return result;
}
}
// TODO: passing 'this' as the scope is bogus since it has
// no parent scope
return members.get(this, name, javaObject, false);
}
public Object get(int index, Scriptable start) {
throw members.reportMemberNotFound(Integer.toString(index));
}
public void put(String name, Scriptable start, Object value) {
// We could be asked to modify the value of a property in the
// prototype. Since we can't add a property to a Java object,
// we modify it in the prototype rather than copy it down.
if (prototype == null || members.has(name, false))
members.put(this, name, javaObject, value, false);
else
prototype.put(name, prototype, value);
}
public void put(int index, Scriptable start, Object value) {
throw members.reportMemberNotFound(Integer.toString(index));
}
public boolean hasInstance(Scriptable value) {
// This is an instance of a Java class, so always return false
return false;
}
public void delete(String name) {
}
public void delete(int index) {
}
public Scriptable getPrototype() {
if (prototype == null && javaObject instanceof String) {
return ScriptableObject.getClassPrototype(parent, "String");
}
return prototype;
}
/**
* Sets the prototype of the object.
*/
public void setPrototype(Scriptable m) {
prototype = m;
}
/**
* Returns the parent (enclosing) scope of the object.
*/
public Scriptable getParentScope() {
return parent;
}
/**
* Sets the parent (enclosing) scope of the object.
*/
public void setParentScope(Scriptable m) {
parent = m;
}
public Object[] getIds() {
return members.getIds(false);
}
/**
@deprecated Use {@link Context#getWrapFactory()} together with calling {@link
WrapFactory#wrap(Context, Scriptable, Object, Class)}
*/
public static Object wrap(Scriptable scope, Object obj, Class staticType) {
Context cx = Context.getContext();
return cx.getWrapFactory().wrap(cx, scope, obj, staticType);
}
public Object unwrap() {
return javaObject;
}
public String getClassName() {
return "JavaObject";
}
public Object getDefaultValue(Class hint)
{
Object value;
if (hint == null) {
if (javaObject instanceof Boolean) {
hint = ScriptRuntime.BooleanClass;
}
}
if (hint == null || hint == ScriptRuntime.StringClass) {
value = javaObject.toString();
} else {
String converterName;
if (hint == ScriptRuntime.BooleanClass) {
converterName = "booleanValue";
} else if (hint == ScriptRuntime.NumberClass) {
converterName = "doubleValue";
} else {
throw Context.reportRuntimeError0("msg.default.value");
}
Object converterObject = get(converterName, this);
if (converterObject instanceof Function) {
Function f = (Function)converterObject;
value = f.call(Context.getContext(), f.getParentScope(),
this, ScriptRuntime.emptyArgs);
} else {
if (hint == ScriptRuntime.NumberClass
&& javaObject instanceof Boolean)
{
boolean b = ((Boolean)javaObject).booleanValue();
value = ScriptRuntime.wrapNumber(b ? 1.0 : 0.0);
} else {
value = javaObject.toString();
}
}
}
return value;
}
/**
* Determine whether we can/should convert between the given type and the
* desired one. This should be superceded by a conversion-cost calculation
* function, but for now I'll hide behind precedent.
*/
public static boolean canConvert(Object fromObj, Class to) {
int weight = getConversionWeight(fromObj, to);
return (weight < CONVERSION_NONE);
}
private static final int JSTYPE_UNDEFINED = 0; // undefined type
private static final int JSTYPE_NULL = 1; // null
private static final int JSTYPE_BOOLEAN = 2; // boolean
private static final int JSTYPE_NUMBER = 3; // number
private static final int JSTYPE_STRING = 4; // string
private static final int JSTYPE_JAVA_CLASS = 5; // JavaClass
private static final int JSTYPE_JAVA_OBJECT = 6; // JavaObject
private static final int JSTYPE_JAVA_ARRAY = 7; // JavaArray
private static final int JSTYPE_OBJECT = 8; // Scriptable
static final byte CONVERSION_TRIVIAL = 1;
static final byte CONVERSION_NONTRIVIAL = 0;
static final byte CONVERSION_NONE = 99;
/**
* Derive a ranking based on how "natural" the conversion is.
* The special value CONVERSION_NONE means no conversion is possible,
* and CONVERSION_NONTRIVIAL signals that more type conformance testing
* is required.
* Based on
* <a href="http://www.mozilla.org/js/liveconnect/lc3_method_overloading.html">
* "preferred method conversions" from Live Connect 3</a>
*/
static int getConversionWeight(Object fromObj, Class to) {
int fromCode = getJSTypeCode(fromObj);
switch (fromCode) {
case JSTYPE_UNDEFINED:
if (to == ScriptRuntime.StringClass ||
to == ScriptRuntime.ObjectClass) {
return 1;
}
break;
case JSTYPE_NULL:
if (!to.isPrimitive()) {
return 1;
}
break;
case JSTYPE_BOOLEAN:
// "boolean" is #1
if (to == Boolean.TYPE) {
return 1;
}
else if (to == ScriptRuntime.BooleanClass) {
return 2;
}
else if (to == ScriptRuntime.ObjectClass) {
return 3;
}
else if (to == ScriptRuntime.StringClass) {
return 4;
}
break;
case JSTYPE_NUMBER:
if (to.isPrimitive()) {
if (to == Double.TYPE) {
return 1;
}
else if (to != Boolean.TYPE) {
return 1 + getSizeRank(to);
}
}
else {
if (to == ScriptRuntime.StringClass) {
// native numbers are #1-8
return 9;
}
else if (to == ScriptRuntime.ObjectClass) {
return 10;
}
else if (ScriptRuntime.NumberClass.isAssignableFrom(to)) {
// "double" is #1
return 2;
}
}
break;
case JSTYPE_STRING:
if (to == ScriptRuntime.StringClass) {
return 1;
}
else if (to.isInstance(fromObj)) {
return 2;
}
else if (to.isPrimitive()) {
if (to == Character.TYPE) {
return 3;
} else if (to != Boolean.TYPE) {
return 4;
}
}
break;
case JSTYPE_JAVA_CLASS:
if (to == ScriptRuntime.ClassClass) {
return 1;
}
else if (to == ScriptRuntime.ObjectClass) {
return 3;
}
else if (to == ScriptRuntime.StringClass) {
return 4;
}
break;
case JSTYPE_JAVA_OBJECT:
case JSTYPE_JAVA_ARRAY:
Object javaObj = fromObj;
if (javaObj instanceof Wrapper) {
javaObj = ((Wrapper)javaObj).unwrap();
}
if (to.isInstance(javaObj)) {
return CONVERSION_NONTRIVIAL;
}
if (to == ScriptRuntime.StringClass) {
return 2;
}
else if (to.isPrimitive() && to != Boolean.TYPE) {
return (fromCode == JSTYPE_JAVA_ARRAY)
? CONVERSION_NONE : 2 + getSizeRank(to);
}
break;
case JSTYPE_OBJECT:
// Other objects takes #1-#3 spots
if (to == fromObj.getClass()) {
// No conversion required
return 1;
}
if (to.isArray()) {
if (fromObj instanceof NativeArray) {
// This is a native array conversion to a java array
// Array conversions are all equal, and preferable to object
// and string conversion, per LC3.
return 1;
}
}
else if (to == ScriptRuntime.ObjectClass) {
return 2;
}
else if (to == ScriptRuntime.StringClass) {
return 3;
}
else if (to == ScriptRuntime.DateClass) {
if (fromObj instanceof NativeDate) {
// This is a native date to java date conversion
return 1;
}
}
else if (to.isInterface()) {
if (fromObj instanceof Function) {
// See comments in coerceType
if (to.getMethods().length == 1) {
return 1;
}
}
return 11;
}
else if (to.isPrimitive() && to != Boolean.TYPE) {
return 3 + getSizeRank(to);
}
break;
}
return CONVERSION_NONE;
}
static int getSizeRank(Class aType) {
if (aType == Double.TYPE) {
return 1;
}
else if (aType == Float.TYPE) {
return 2;
}
else if (aType == Long.TYPE) {
return 3;
}
else if (aType == Integer.TYPE) {
return 4;
}
else if (aType == Short.TYPE) {
return 5;
}
else if (aType == Character.TYPE) {
return 6;
}
else if (aType == Byte.TYPE) {
return 7;
}
else if (aType == Boolean.TYPE) {
return CONVERSION_NONE;
}
else {
return 8;
}
}
private static int getJSTypeCode(Object value) {
if (value == null) {
return JSTYPE_NULL;
}
else if (value == Undefined.instance) {
return JSTYPE_UNDEFINED;
}
else if (value instanceof String) {
return JSTYPE_STRING;
}
else if (value instanceof Number) {
return JSTYPE_NUMBER;
}
else if (value instanceof Boolean) {
return JSTYPE_BOOLEAN;
}
else if (value instanceof Scriptable) {
if (value instanceof NativeJavaClass) {
return JSTYPE_JAVA_CLASS;
}
else if (value instanceof NativeJavaArray) {
return JSTYPE_JAVA_ARRAY;
}
else if (value instanceof Wrapper) {
return JSTYPE_JAVA_OBJECT;
}
else {
return JSTYPE_OBJECT;
}
}
else if (value instanceof Class) {
return JSTYPE_JAVA_CLASS;
}
else {
Class valueClass = value.getClass();
if (valueClass.isArray()) {
return JSTYPE_JAVA_ARRAY;
}
else {
return JSTYPE_JAVA_OBJECT;
}
}
}
/**
* Not intended for public use. Callers should use the
* public API Context.toType.
* @deprecated as of 1.5 Release 4
* @see org.mozilla.javascript.Context#jsToJava(Object, Class)
*/
public static Object coerceType(Class type, Object value)
{
return coerceTypeImpl(type, value);
}
/**
* Type-munging for field setting and method invocation.
* Conforms to LC3 specification
*/
static Object coerceTypeImpl(Class type, Object value)
{
if (value != null && value.getClass() == type) {
return value;
}
switch (getJSTypeCode(value)) {
case JSTYPE_NULL:
// raise error if type.isPrimitive()
if (type.isPrimitive()) {
reportConversionError(value, type);
}
return null;
case JSTYPE_UNDEFINED:
if (type == ScriptRuntime.StringClass ||
type == ScriptRuntime.ObjectClass) {
return "undefined";
}
else {
reportConversionError("undefined", type);
}
break;
case JSTYPE_BOOLEAN:
// Under LC3, only JS Booleans can be coerced into a Boolean value
if (type == Boolean.TYPE ||
type == ScriptRuntime.BooleanClass ||
type == ScriptRuntime.ObjectClass) {
return value;
}
else if (type == ScriptRuntime.StringClass) {
return value.toString();
}
else {
reportConversionError(value, type);
}
break;
case JSTYPE_NUMBER:
if (type == ScriptRuntime.StringClass) {
return ScriptRuntime.toString(value);
}
else if (type == ScriptRuntime.ObjectClass) {
return coerceToNumber(Double.TYPE, value);
}
else if ((type.isPrimitive() && type != Boolean.TYPE) ||
ScriptRuntime.NumberClass.isAssignableFrom(type)) {
return coerceToNumber(type, value);
}
else {
reportConversionError(value, type);
}
break;
case JSTYPE_STRING:
if (type == ScriptRuntime.StringClass || type.isInstance(value)) {
return value;
}
else if (type == Character.TYPE
|| type == ScriptRuntime.CharacterClass)
{
// Special case for converting a single char string to a
// character
// Placed here because it applies *only* to JS strings,
// not other JS objects converted to strings
if (((String)value).length() == 1) {
return new Character(((String)value).charAt(0));
}
else {
return coerceToNumber(type, value);
}
}
else if ((type.isPrimitive() && type != Boolean.TYPE)
|| ScriptRuntime.NumberClass.isAssignableFrom(type))
{
return coerceToNumber(type, value);
}
else {
reportConversionError(value, type);
}
break;
case JSTYPE_JAVA_CLASS:
if (value instanceof Wrapper) {
value = ((Wrapper)value).unwrap();
}
if (type == ScriptRuntime.ClassClass ||
type == ScriptRuntime.ObjectClass) {
return value;
}
else if (type == ScriptRuntime.StringClass) {
return value.toString();
}
else {
reportConversionError(value, type);
}
break;
case JSTYPE_JAVA_OBJECT:
case JSTYPE_JAVA_ARRAY:
if (value instanceof Wrapper) {
value = ((Wrapper)value).unwrap();
}
if (type.isPrimitive()) {
if (type == Boolean.TYPE) {
reportConversionError(value, type);
}
return coerceToNumber(type, value);
}
else {
if (type == ScriptRuntime.StringClass) {
return value.toString();
}
else {
if (type.isInstance(value)) {
return value;
}
else {
reportConversionError(value, type);
}
}
}
break;
case JSTYPE_OBJECT:
if (type == ScriptRuntime.StringClass) {
return ScriptRuntime.toString(value);
}
else if (type.isPrimitive()) {
if (type == Boolean.TYPE) {
reportConversionError(value, type);
}
return coerceToNumber(type, value);
}
else if (type.isInstance(value)) {
return value;
}
else if (type == ScriptRuntime.DateClass
&& value instanceof NativeDate)
{
double time = ((NativeDate)value).getJSTimeValue();
// XXX: This will replace NaN by 0
return new Date((long)time);
}
else if (type.isArray() && value instanceof NativeArray) {
// Make a new java array, and coerce the JS array components
// to the target (component) type.
NativeArray array = (NativeArray) value;
long length = array.getLength();
Class arrayType = type.getComponentType();
Object Result = Array.newInstance(arrayType, (int)length);
for (int i = 0 ; i < length ; ++i) {
try {
Array.set(Result, i, coerceType(arrayType,
array.get(i, array)));
}
catch (EvaluatorException ee) {
reportConversionError(value, type);
}
}
return Result;
}
else if (value instanceof Wrapper) {
value = ((Wrapper)value).unwrap();
if (type.isInstance(value))
return value;
reportConversionError(value, type);
}
else if (type.isInterface() && value instanceof Callable) {
// Try to use function as implementation of Java interface.
//
// XXX: Curently only instances of ScriptableObject are
// supported since the resulting interface proxies should
// be reused next time conversion is made and generic
// Callable has no storage for it. Weak references can
// address it but for now use this restriction.
if (value instanceof ScriptableObject) {
ScriptableObject so = (ScriptableObject)value;
Object key = Kit.makeHashKeyFromPair(
COERCED_INTERFACE_KEY, type);
Object old = so.getAssociatedValue(key);
if (old != null) {
// Function was already wrapped
return old;
}
Context cx = Context.getContext();
Object glue
= InterfaceAdapter.create(cx, type, (Callable)value);
// Store for later retrival
glue = so.associateValue(key, glue);
return glue;
}
reportConversionError(value, type);
} else {
reportConversionError(value, type);
}
break;
}
return value;
}
private static Object coerceToNumber(Class type, Object value)
{
Class valueClass = value.getClass();
// Character
if (type == Character.TYPE || type == ScriptRuntime.CharacterClass) {
if (valueClass == ScriptRuntime.CharacterClass) {
return value;
}
return new Character((char)toInteger(value,
ScriptRuntime.CharacterClass,
Character.MIN_VALUE,
Character.MAX_VALUE));
}
// Double, Float
if (type == ScriptRuntime.ObjectClass ||
type == ScriptRuntime.DoubleClass || type == Double.TYPE) {
return valueClass == ScriptRuntime.DoubleClass
? value
: new Double(toDouble(value));
}
if (type == ScriptRuntime.FloatClass || type == Float.TYPE) {
if (valueClass == ScriptRuntime.FloatClass) {
return value;
}
else {
double number = toDouble(value);
if (Double.isInfinite(number) || Double.isNaN(number)
|| number == 0.0) {
return new Float((float)number);
}
else {
double absNumber = Math.abs(number);
if (absNumber < Float.MIN_VALUE) {
return new Float((number > 0.0) ? +0.0 : -0.0);
}
else if (absNumber > Float.MAX_VALUE) {
return new Float((number > 0.0) ?
Float.POSITIVE_INFINITY :
Float.NEGATIVE_INFINITY);
}
else {
return new Float((float)number);
}
}
}
}
// Integer, Long, Short, Byte
if (type == ScriptRuntime.IntegerClass || type == Integer.TYPE) {
if (valueClass == ScriptRuntime.IntegerClass) {
return value;
}
else {
return new Integer((int)toInteger(value,
ScriptRuntime.IntegerClass,
Integer.MIN_VALUE,
Integer.MAX_VALUE));
}
}
if (type == ScriptRuntime.LongClass || type == Long.TYPE) {
if (valueClass == ScriptRuntime.LongClass) {
return value;
} else {
/* Long values cannot be expressed exactly in doubles.
* We thus use the largest and smallest double value that
* has a value expressible as a long value. We build these
* numerical values from their hexidecimal representations
* to avoid any problems caused by attempting to parse a
* decimal representation.
*/
final double max = Double.longBitsToDouble(0x43dfffffffffffffL);
final double min = Double.longBitsToDouble(0xc3e0000000000000L);
return new Long(toInteger(value,
ScriptRuntime.LongClass,
min,
max));
}
}
if (type == ScriptRuntime.ShortClass || type == Short.TYPE) {
if (valueClass == ScriptRuntime.ShortClass) {
return value;
}
else {
return new Short((short)toInteger(value,
ScriptRuntime.ShortClass,
Short.MIN_VALUE,
Short.MAX_VALUE));
}
}
if (type == ScriptRuntime.ByteClass || type == Byte.TYPE) {
if (valueClass == ScriptRuntime.ByteClass) {
return value;
}
else {
return new Byte((byte)toInteger(value,
ScriptRuntime.ByteClass,
Byte.MIN_VALUE,
Byte.MAX_VALUE));
}
}
return new Double(toDouble(value));
}
private static double toDouble(Object value)
{
if (value instanceof Number) {
return ((Number)value).doubleValue();
}
else if (value instanceof String) {
return ScriptRuntime.toNumber((String)value);
}
else if (value instanceof Scriptable) {
if (value instanceof Wrapper) {
// XXX: optimize tail-recursion?
return toDouble(((Wrapper)value).unwrap());
}
else {
return ScriptRuntime.toNumber(value);
}
}
else {
Method meth;
try {
meth = value.getClass().getMethod("doubleValue",
(Class [])null);
}
catch (NoSuchMethodException e) {
meth = null;
}
catch (SecurityException e) {
meth = null;
}
if (meth != null) {
try {
return ((Number)meth.invoke(value,
(Object [])null)).doubleValue();
}
catch (IllegalAccessException e) {
// XXX: ignore, or error message?
reportConversionError(value, Double.TYPE);
}
catch (InvocationTargetException e) {
// XXX: ignore, or error message?
reportConversionError(value, Double.TYPE);
}
}
return ScriptRuntime.toNumber(value.toString());
}
}
private static long toInteger(Object value, Class type,
double min, double max)
{
double d = toDouble(value);
if (Double.isInfinite(d) || Double.isNaN(d)) {
// Convert to string first, for more readable message
reportConversionError(ScriptRuntime.toString(value), type);
}
if (d > 0.0) {
d = Math.floor(d);
}
else {
d = Math.ceil(d);
}
if (d < min || d > max) {
// Convert to string first, for more readable message
reportConversionError(ScriptRuntime.toString(value), type);
}
return (long)d;
}
static void reportConversionError(Object value, Class type)
{
// It uses String.valueOf(value), not value.toString() since
// value can be null, bug 282447.
throw Context.reportRuntimeError2(
"msg.conversion.not.allowed",
String.valueOf(value),
JavaMembers.javaSignature(type));
}
private void writeObject(ObjectOutputStream out)
throws IOException
{
out.defaultWriteObject();
out.writeBoolean(isAdapter);
if (isAdapter) {
if (adapter_writeAdapterObject == null) {
throw new IOException();
}
Object[] args = { javaObject, out };
try {
adapter_writeAdapterObject.invoke(null, args);
} catch (Exception ex) {
throw new IOException();
}
} else {
out.writeObject(javaObject);
}
if (staticType != null) {
out.writeObject(staticType.getClass().getName());
} else {
out.writeObject(null);
}
}
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException
{
in.defaultReadObject();
isAdapter = in.readBoolean();
if (isAdapter) {
if (adapter_readAdapterObject == null)
throw new ClassNotFoundException();
Object[] args = { this, in };
try {
javaObject = adapter_readAdapterObject.invoke(null, args);
} catch (Exception ex) {
throw new IOException();
}
} else {
javaObject = in.readObject();
}
String className = (String)in.readObject();
if (className != null) {
staticType = Class.forName(className);
} else {
staticType = null;
}
initMembers();
}
/**
* The prototype of this object.
*/
protected Scriptable prototype;
/**
* The parent scope of this object.
*/
protected Scriptable parent;
protected transient Object javaObject;
protected transient Class staticType;
protected transient JavaMembers members;
private transient Hashtable fieldAndMethods;
private transient boolean isAdapter;
private static final Object COERCED_INTERFACE_KEY = new Object();
private static Method adapter_writeAdapterObject;
private static Method adapter_readAdapterObject;
static {
// Reflection in java is verbose
Class[] sig2 = new Class[2];
Class cl = Kit.classOrNull("org.mozilla.javascript.JavaAdapter");
if (cl != null) {
try {
sig2[0] = ScriptRuntime.ObjectClass;
sig2[1] = Kit.classOrNull("java.io.ObjectOutputStream");
adapter_writeAdapterObject = cl.getMethod("writeAdapterObject",
sig2);
sig2[0] = ScriptRuntime.ScriptableClass;
sig2[1] = Kit.classOrNull("java.io.ObjectInputStream");
adapter_readAdapterObject = cl.getMethod("readAdapterObject",
sig2);
} catch (Exception ex) {
adapter_writeAdapterObject = null;
adapter_readAdapterObject = null;
}
}
}
}
|