This repository has been archived by the owner on Jan 13, 2021. It is now read-only.
/
MochaRuntime.m
1520 lines (1232 loc) · 53.6 KB
/
MochaRuntime.m
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
//
// MochaRuntime.m
// Mocha
//
// Created by Logan Collins on 5/10/12.
// Copyright (c) 2012 Sunflower Softworks. All rights reserved.
//
#import "MochaRuntime.h"
#import "MochaRuntime_Private.h"
#import "MOBox.h"
#import "MOUndefined.h"
#import "MOMethod_Private.h"
#import "MOClosure_Private.h"
#import "MOJavaScriptObject.h"
#import "MOPointer.h"
#import "MOUtilities.h"
#import "MOFunctionArgument.h"
#import "MOAllocator.h"
#import "MOObjCRuntime.h"
#import "MOMapTable.h"
#import "MOBridgeSupportController.h"
#import "MOBridgeSupportSymbol.h"
#import "NSObject+MochaAdditions.h"
#import "NSArray+MochaAdditions.h"
#import "NSDictionary+MochaAdditions.h"
#import "NSOrderedSet+MochaAdditions.h"
#import <objc/runtime.h>
#import <dlfcn.h>
// Class types
static JSClassRef MochaClass = NULL;
static JSClassRef MOObjectClass = NULL;
static JSClassRef MOBoxedObjectClass = NULL;
static JSClassRef MOConstructorClass = NULL;
static JSClassRef MOFunctionClass = NULL;
// Global object
static JSValueRef Mocha_getProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef *exception);
// Private Cocoa object callbacks
static void MOObject_initialize(JSContextRef ctx, JSObjectRef object);
static void MOObject_finalize(JSObjectRef object);
static bool MOBoxedObject_hasProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName);
static JSValueRef MOBoxedObject_getProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef *exception);
static bool MOBoxedObject_setProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value, JSValueRef *exception);
static bool MOBoxedObject_deleteProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef *exception);
static void MOBoxedObject_getPropertyNames(JSContextRef ctx, JSObjectRef object, JSPropertyNameAccumulatorRef propertyNames);
static JSValueRef MOBoxedObject_convertToType(JSContextRef ctx, JSObjectRef object, JSType type, JSValueRef *exception);
static bool MOBoxedObject_hasInstance(JSContextRef ctx, JSObjectRef constructor, JSValueRef possibleInstance, JSValueRef *exception);
static JSObjectRef MOConstructor_callAsConstructor(JSContextRef ctx, JSObjectRef object, size_t argumentsCount, const JSValueRef arguments[], JSValueRef *exception);
static JSValueRef MOFunction_callAsFunction(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception);
NSString * const MORuntimeException = @"MORuntimeException";
NSString * const MOJavaScriptException = @"MOJavaScriptException";
#pragma mark -
#pragma mark Runtime
@implementation Mocha {
JSGlobalContextRef _ctx;
BOOL _ownsContext;
NSMutableDictionary *_exportedObjects;
MOMapTable *_objectsToBoxes;
NSMutableArray *_frameworkSearchPaths;
}
@synthesize delegate=_delegate;
+ (void)initialize {
if (self == [Mocha class]) {
// Mocha global object
JSClassDefinition MochaClassDefinition = kJSClassDefinitionEmpty;
MochaClassDefinition.className = "Mocha";
MochaClassDefinition.getProperty = Mocha_getProperty;
MochaClass = JSClassCreate(&MochaClassDefinition);
// Mocha object
JSClassDefinition MOObjectDefinition = kJSClassDefinitionEmpty;
MOObjectDefinition.className = "MOObject";
MOObjectDefinition.initialize = MOObject_initialize;
MOObjectDefinition.finalize = MOObject_finalize;
MOObjectClass = JSClassCreate(&MOObjectDefinition);
// Boxed Cocoa object
JSClassDefinition MOBoxedObjectDefinition = kJSClassDefinitionEmpty;
MOBoxedObjectDefinition.className = "MOBoxedObject";
MOBoxedObjectDefinition.parentClass = MOObjectClass;
MOBoxedObjectDefinition.hasProperty = MOBoxedObject_hasProperty;
MOBoxedObjectDefinition.getProperty = MOBoxedObject_getProperty;
MOBoxedObjectDefinition.setProperty = MOBoxedObject_setProperty;
MOBoxedObjectDefinition.deleteProperty = MOBoxedObject_deleteProperty;
MOBoxedObjectDefinition.getPropertyNames = MOBoxedObject_getPropertyNames;
MOBoxedObjectDefinition.hasInstance = MOBoxedObject_hasInstance;
MOBoxedObjectDefinition.convertToType = MOBoxedObject_convertToType;
MOBoxedObjectClass = JSClassCreate(&MOBoxedObjectDefinition);
// Constructor object
JSClassDefinition MOConstructorDefinition = kJSClassDefinitionEmpty;
MOConstructorDefinition.className = "MOConstructor";
MOConstructorDefinition.parentClass = MOObjectClass;
MOConstructorDefinition.callAsConstructor = MOConstructor_callAsConstructor;
MOConstructorDefinition.convertToType = MOBoxedObject_convertToType;
MOConstructorClass = JSClassCreate(&MOConstructorDefinition);
// Function object
JSClassDefinition MOFunctionDefinition = kJSClassDefinitionEmpty;
MOFunctionDefinition.className = "MOFunction";
MOFunctionDefinition.parentClass = MOObjectClass;
MOFunctionDefinition.callAsFunction = MOFunction_callAsFunction;
MOFunctionDefinition.convertToType = MOBoxedObject_convertToType;
MOFunctionClass = JSClassCreate(&MOFunctionDefinition);
// Swizzle indexed subscripting support for NSArray
SEL indexedSubscriptSelector = @selector(objectForIndexedSubscript:);
if (![NSArray instancesRespondToSelector:indexedSubscriptSelector]) {
IMP imp = class_getMethodImplementation([NSArray class], @selector(mo_objectForIndexedSubscript:));
class_addMethod([NSArray class], @selector(objectForIndexedSubscript:), imp, "@@:l");
imp = class_getMethodImplementation([NSMutableArray class], @selector(mo_setObject:forIndexedSubscript:));
class_addMethod([NSMutableArray class], @selector(setObject:forIndexedSubscript:), imp, "@@:@l");
}
// Swizzle indexed subscripting support for NSOrderedSet
if (![NSOrderedSet instancesRespondToSelector:indexedSubscriptSelector]) {
IMP imp = class_getMethodImplementation([NSOrderedSet class], @selector(mo_objectForIndexedSubscript:));
class_addMethod([NSOrderedSet class], @selector(objectForIndexedSubscript:), imp, "@@:l");
imp = class_getMethodImplementation([NSMutableOrderedSet class], @selector(mo_setObject:forIndexedSubscript:));
class_addMethod([NSMutableOrderedSet class], @selector(setObject:forIndexedSubscript:), imp, "@@:@l");
}
// Swizzle keyed subscripting support for NSDictionary
SEL keyedSubscriptSelector = @selector(objectForKeyedSubscript:);
if (![NSDictionary instancesRespondToSelector:keyedSubscriptSelector]) {
IMP imp = class_getMethodImplementation([NSDictionary class], @selector(mo_objectForKeyedSubscript:));
class_addMethod([NSDictionary class], @selector(objectForKeyedSubscript:), imp, "@@:@");
imp = class_getMethodImplementation([NSMutableDictionary class], @selector(mo_setObject:forKeyedSubscript:));
class_addMethod([NSMutableDictionary class], @selector(setObject:forKeyedSubscript:), imp, "@@:@@");
}
// Swizzle in NSObject additions
[NSObject mo_swizzleAdditions];
}
}
+ (Mocha *)sharedRuntime {
static Mocha *sharedRuntime = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedRuntime = [[self alloc] init];
});
return sharedRuntime;
}
+ (Mocha *)runtimeWithContext:(JSContextRef)ctx {
JSStringRef jsName = JSStringCreateWithUTF8CString("__mocha__");
JSValueRef jsValue = JSObjectGetProperty(ctx, JSContextGetGlobalObject(ctx), jsName, NULL);
JSStringRelease(jsName);
return [self objectForJSValue:jsValue inContext:ctx];
}
- (id)init {
return [self initWithGlobalContext:NULL];
}
- (id)initWithGlobalContext:(JSGlobalContextRef)ctx {
if (ctx == NULL) {
ctx = JSGlobalContextCreate(MochaClass);
_ownsContext = YES;
}
else {
JSGlobalContextRetain(ctx);
_ownsContext = NO;
// Create the global "Mocha" object
JSObjectRef o = JSObjectMake(ctx, MochaClass, NULL);
JSStringRef jsName = JSStringCreateWithUTF8CString("Mocha");
JSObjectSetProperty(ctx, JSContextGetGlobalObject(ctx), jsName, o, kJSPropertyAttributeDontDelete, NULL);
JSStringRelease(jsName);
}
self = [super init];
if (self) {
_ctx = ctx;
_exportedObjects = [[NSMutableDictionary alloc] init];
_objectsToBoxes = [MOMapTable mapTableWithStrongToStrongObjects];
_frameworkSearchPaths = [[NSMutableArray alloc] initWithObjects:
@"/System/Library/Frameworks",
@"/Library/Frameworks",
nil];
// Add the runtime as a property of the context
[self setObject:self withName:@"__mocha__" attributes:(kJSPropertyAttributeReadOnly|kJSPropertyAttributeDontEnum|kJSPropertyAttributeDontDelete)];
// Load builtins
[self installBuiltins];
// Load base frameworks
#if !TARGET_OS_IPHONE
[self loadFrameworkWithName:@"Foundation"];
if (![self loadFrameworkWithName:@"CoreGraphics"]) {
[self loadFrameworkWithName:@"CoreGraphics" inDirectory:@"/System/Library/Frameworks/ApplicationServices.framework/Frameworks"];
}
#endif
}
return self;
}
- (void)dealloc {
[self cleanUp];
JSGlobalContextRelease(_ctx);
}
- (JSGlobalContextRef)context {
return _ctx;
}
#pragma mark -
#pragma mark Key-Value Coding
- (id)valueForUndefinedKey:(NSString *)key {
return [_exportedObjects objectForKey:key];
}
- (void)setValue:(id)value forUndefinedKey:(NSString *)key {
[_exportedObjects setObject:value forKey:key];
}
- (void)setNilValueForKey:(NSString *)key {
[_exportedObjects removeObjectForKey:key];
}
#pragma mark -
#pragma mark Object Conversion
+ (JSValueRef)JSValueForObject:(id)object inContext:(JSContextRef)ctx {
return [[Mocha runtimeWithContext:ctx] JSValueForObject:object];
}
+ (id)objectForJSValue:(JSValueRef)value inContext:(JSContextRef)ctx {
return [self objectForJSValue:value inContext:ctx unboxObjects:YES];
}
+ (id)objectForJSValue:(JSValueRef)value inContext:(JSContextRef)ctx unboxObjects:(BOOL)unboxObjects {
if (value == NULL || JSValueIsUndefined(ctx, value)) {
return [MOUndefined undefined];
}
if (JSValueIsNull(ctx, value)) {
return nil;
}
if (JSValueIsString(ctx, value)) {
JSStringRef resultStringJS = JSValueToStringCopy(ctx, value, NULL);
NSString *resultString = (NSString *)CFBridgingRelease(JSStringCopyCFString(kCFAllocatorDefault, resultStringJS));
JSStringRelease(resultStringJS);
return resultString;
}
if (JSValueIsNumber(ctx, value)) {
double v = JSValueToNumber(ctx, value, NULL);
return [NSNumber numberWithDouble:v];
}
if (JSValueIsBoolean(ctx, value)) {
bool v = JSValueToBoolean(ctx, value);
return [NSNumber numberWithBool:v];
}
if (!JSValueIsObject(ctx, value)) {
return nil;
}
JSObjectRef jsObject = JSValueToObject(ctx, value, NULL);
id private = (__bridge id)JSObjectGetPrivate(jsObject);
if (private != nil) {
if ([private isKindOfClass:[MOBox class]]) {
if (unboxObjects == YES) {
// Boxed ObjC object
id object = [private representedObject];
if ([object isKindOfClass:[MOClosure class]]) {
// Auto-unbox closures
return [object block];
}
else {
return object;
}
}
else {
return private;
}
}
else {
return private;
}
}
else {
BOOL isFunction = JSObjectIsFunction(ctx, jsObject);
if (isFunction) {
// Function
return [MOJavaScriptObject objectWithJSObject:jsObject context:ctx];
}
// Normal JS object
JSStringRef scriptJS = JSStringCreateWithUTF8CString("return arguments[0].constructor == Array.prototype.constructor");
JSObjectRef fn = JSObjectMakeFunction(ctx, NULL, 0, NULL, scriptJS, NULL, 1, NULL);
JSValueRef result = JSObjectCallAsFunction(ctx, fn, NULL, 1, (JSValueRef *)&jsObject, NULL);
JSStringRelease(scriptJS);
BOOL isArray = JSValueToBoolean(ctx, result);
if (isArray) {
// Array
return [self arrayForJSArray:jsObject inContext:ctx];
}
else {
// Object
return [self dictionaryForJSHash:jsObject inContext:ctx];
}
}
return nil;
}
+ (NSArray *)arrayForJSArray:(JSObjectRef)arrayValue inContext:(JSContextRef)ctx {
JSValueRef exception = NULL;
JSStringRef lengthJS = JSStringCreateWithUTF8CString("length");
NSUInteger length = JSValueToNumber(ctx, JSObjectGetProperty(ctx, arrayValue, lengthJS, NULL), &exception);
JSStringRelease(lengthJS);
if (exception != NULL) {
return nil;
}
NSMutableArray *array = [NSMutableArray arrayWithCapacity:length];
for (NSUInteger i=0; i<length; i++) {
id obj = nil;
JSValueRef jsValue = JSObjectGetPropertyAtIndex(ctx, arrayValue, (unsigned int)i, &exception);
if (exception != NULL) {
return nil;
}
obj = [self objectForJSValue:jsValue inContext:ctx unboxObjects:YES];
if (obj == nil) {
obj = [NSNull null];
}
[array addObject:obj];
}
return [array copy];
}
+ (NSDictionary *)dictionaryForJSHash:(JSObjectRef)hashValue inContext:(JSContextRef)ctx {
JSPropertyNameArrayRef names = JSObjectCopyPropertyNames(ctx, hashValue);
NSUInteger length = JSPropertyNameArrayGetCount(names);
NSMutableDictionary *dictionary = [NSMutableDictionary dictionaryWithCapacity:length];
JSValueRef exception = NULL;
for (NSUInteger i=0; i<length; i++) {
id obj = nil;
JSStringRef name = JSPropertyNameArrayGetNameAtIndex(names, i);
JSValueRef jsValue = JSObjectGetProperty(ctx, hashValue, name, &exception);
if (exception != NULL) {
return NO;
}
obj = [self objectForJSValue:jsValue inContext:ctx unboxObjects:YES];
if (obj == nil) {
obj = [NSNull null];
}
NSString *key = (NSString *)CFBridgingRelease(JSStringCopyCFString(kCFAllocatorDefault, name));
[dictionary setObject:obj forKey:key];
}
JSPropertyNameArrayRelease(names);
return [dictionary copy];
}
- (JSValueRef)JSValueForObject:(id)object {
JSValueRef value = NULL;
if ([object isKindOfClass:[MOBox class]]) {
value = [object JSObject];
}
/*else if ([object isKindOfClass:[NSString class]]) {
JSStringRef string = JSStringCreateWithCFString((CFStringRef)object);
value = JSValueMakeString(_ctx, string);
JSStringRelease(string);
}
else if ([object isKindOfClass:[NSNumber class]]) {
double doubleValue = [object doubleValue];
value = JSValueMakeNumber(_ctx, doubleValue);
}*/
else if ([object isKindOfClass:NSClassFromString(@"NSBlock")]) {
// Auto-box blocks inside of a closure object
MOClosure *closure = [MOClosure closureWithBlock:object];
value = [self boxedJSObjectForObject:closure];
}
else if (object == nil/* || [object isKindOfClass:[NSNull class]]*/) {
value = JSValueMakeNull(_ctx);
}
else if (object == [MOUndefined undefined]) {
value = JSValueMakeUndefined(_ctx);
}
if (value == NULL) {
value = [self boxedJSObjectForObject:object];
}
return value;
}
- (id)objectForJSValue:(JSValueRef)value {
return [self objectForJSValue:value unboxObjects:YES];
}
- (id)objectForJSValue:(JSValueRef)value unboxObjects:(BOOL)unboxObjects {
return [Mocha objectForJSValue:value inContext:_ctx unboxObjects:unboxObjects];
}
- (JSObjectRef)boxedJSObjectForObject:(id)object {
if (object == nil) {
return NULL;
}
MOBox *box = [_objectsToBoxes objectForKey:object];
if (box != nil) {
return [box JSObject];
}
box = [[MOBox alloc] init];
box.runtime = self;
box.representedObject = object;
JSObjectRef jsObject = NULL;
if ([object isKindOfClass:[MOMethod class]]
|| [object isKindOfClass:[MOClosure class]]
|| [object isKindOfClass:[MOBridgeSupportFunction class]]) {
jsObject = JSObjectMake(_ctx, MOFunctionClass, (__bridge void *)(box));
}
else {
jsObject = JSObjectMake(_ctx, MOBoxedObjectClass, (__bridge void *)(box));
}
box.JSObject = jsObject;
[_objectsToBoxes setObject:box forKey:object];
return jsObject;
}
- (id)unboxedObjectForJSObject:(JSObjectRef)jsObject {
id private = (__bridge id)(JSObjectGetPrivate(jsObject));
if ([private isKindOfClass:[MOBox class]]) {
return [private representedObject];
}
return nil;
}
- (void)removeBoxAssociationForObject:(id)object {
if (object != nil) {
[_objectsToBoxes removeObjectForKey:object];
}
}
#pragma mark -
#pragma mark Object Storage
- (id)objectWithName:(NSString *)name {
JSValueRef exception = NULL;
JSStringRef jsName = JSStringCreateWithUTF8CString([name UTF8String]);
JSValueRef jsValue = JSObjectGetProperty(_ctx, JSContextGetGlobalObject(_ctx), jsName, &exception);
JSStringRelease(jsName);
if (exception != NULL) {
[self throwJSException:exception];
return NULL;
}
return [self objectForJSValue:jsValue];
}
- (JSValueRef)setObject:(id)object withName:(NSString *)name {
return [self setObject:object withName:name attributes:(kJSPropertyAttributeNone)];
}
- (JSValueRef)setObject:(id)object withName:(NSString *)name attributes:(JSPropertyAttributes)attributes {
JSValueRef jsValue = [self JSValueForObject:object];
// Set
JSValueRef exception = NULL;
JSStringRef jsName = JSStringCreateWithUTF8CString([name UTF8String]);
JSObjectSetProperty(_ctx, JSContextGetGlobalObject(_ctx), jsName, jsValue, attributes, &exception);
JSStringRelease(jsName);
if (exception != NULL) {
[self throwJSException:exception];
return NULL;
}
return jsValue;
}
- (BOOL)removeObjectWithName:(NSString *)name {
JSValueRef exception = NULL;
// Delete
JSStringRef jsName = JSStringCreateWithUTF8CString([name UTF8String]);
JSObjectDeleteProperty(_ctx, JSContextGetGlobalObject(_ctx), jsName, &exception);
JSStringRelease(jsName);
if (exception != NULL) {
[self throwJSException:exception];
return NO;
}
return YES;
}
#pragma mark -
#pragma mark Evaluation
- (id)evalString:(NSString *)string {
JSValueRef jsValue = [self evalJSString:string];
return [self objectForJSValue:jsValue];
}
- (JSValueRef)evalJSString:(NSString *)string {
return [self evalJSString:string scriptPath:nil];
}
- (JSValueRef)evalJSString:(NSString *)string scriptPath:(NSString *)scriptPath {
if (string == nil) {
return NULL;
}
JSStringRef jsString = JSStringCreateWithCFString((__bridge CFStringRef)string);
JSStringRef jsScriptPath = (scriptPath != nil ? JSStringCreateWithUTF8CString([scriptPath UTF8String]) : NULL);
JSValueRef exception = NULL;
JSValueRef result = JSEvaluateScript(_ctx, jsString, NULL, jsScriptPath, 1, &exception);
if (jsString != NULL) {
JSStringRelease(jsString);
}
if (jsScriptPath != NULL) {
JSStringRelease(jsScriptPath);
}
if (exception != NULL) {
[self throwJSException:exception];
return NULL;
}
return result;
}
#pragma mark -
#pragma mark Functions
- (id)callFunctionWithName:(NSString *)functionName {
return [self callFunctionWithName:functionName withArguments:nil];
}
- (id)callFunctionWithName:(NSString *)functionName withArguments:(id)firstArg, ... {
NSMutableArray *arguments = [NSMutableArray array];
va_list args;
va_start(args, firstArg);
for (id arg = firstArg; arg != nil; arg = va_arg(args, id)) {
[arguments addObject:arg];
}
va_end(args);
return [self callFunctionWithName:functionName withArgumentsInArray:arguments];
}
- (id)callFunctionWithName:(NSString *)functionName withArgumentsInArray:(NSArray *)arguments {
JSValueRef value = [self callJSFunctionWithName:functionName withArgumentsInArray:arguments];
return [self objectForJSValue:value];
}
- (JSObjectRef)JSFunctionWithName:(NSString *)functionName {
JSValueRef exception = NULL;
// Get function as property of global object
JSStringRef jsFunctionName = JSStringCreateWithUTF8CString([functionName UTF8String]);
JSValueRef jsFunctionValue = JSObjectGetProperty(_ctx, JSContextGetGlobalObject(_ctx), jsFunctionName, &exception);
JSStringRelease(jsFunctionName);
if (exception != NULL) {
[self throwJSException:exception];
return NULL;
}
return JSValueToObject(_ctx, jsFunctionValue, NULL);
}
- (JSValueRef)callJSFunctionWithName:(NSString *)functionName withArgumentsInArray:(NSArray *)arguments {
JSObjectRef jsFunction = [self JSFunctionWithName:functionName];
if (jsFunction == NULL) {
return NULL;
}
return [self callJSFunction:jsFunction withArgumentsInArray:arguments];
}
- (JSValueRef)callJSFunction:(JSObjectRef)jsFunction withArgumentsInArray:(NSArray *)arguments {
JSValueRef *jsArguments = NULL;
NSUInteger argumentsCount = [arguments count];
if (argumentsCount > 0) {
jsArguments = malloc(sizeof(JSValueRef) * argumentsCount);
for (NSUInteger i=0; i<argumentsCount; i++) {
id argument = [arguments objectAtIndex:i];
JSValueRef value = [self JSValueForObject:argument];
jsArguments[i] = value;
}
}
JSValueRef exception = NULL;
JSValueRef returnValue = JSObjectCallAsFunction(_ctx, jsFunction, NULL, argumentsCount, jsArguments, &exception);
if (jsArguments != NULL) {
free(jsArguments);
}
if (exception != NULL) {
[self throwJSException:exception];
return NULL;
}
return returnValue;
}
#pragma mark -
#pragma mark Syntax Validation
- (BOOL)isSyntaxValidForString:(NSString *)string {
JSStringRef jsScript = JSStringCreateWithUTF8CString([string UTF8String]);
JSValueRef exception = NULL;
bool success = JSCheckScriptSyntax(_ctx, jsScript, NULL, 1, &exception);
if (jsScript != NULL) {
JSStringRelease(jsScript);
}
if (exception != NULL) {
[self throwJSException:exception];
}
return success;
}
#pragma mark -
#pragma mark Exceptions
+ (NSException *)exceptionWithJSException:(JSValueRef)exception context:(JSContextRef)ctx {
JSStringRef resultStringJS = JSValueToStringCopy(ctx, exception, NULL);
NSString *error = (NSString *)CFBridgingRelease(JSStringCopyCFString(kCFAllocatorDefault, resultStringJS));
JSStringRelease(resultStringJS);
if (JSValueGetType(ctx, exception) != kJSTypeObject) {
NSException *mochaException = [NSException exceptionWithName:MOJavaScriptException reason:error userInfo:nil];
return mochaException;
}
else {
// Iterate over all properties of the exception
JSObjectRef jsObject = JSValueToObject(ctx, exception, NULL);
JSPropertyNameArrayRef jsNames = JSObjectCopyPropertyNames(ctx, jsObject);
size_t count = JSPropertyNameArrayGetCount(jsNames);
NSMutableDictionary *userInfo = [NSMutableDictionary dictionaryWithCapacity:count];
for (size_t i = 0; i < count; i++) {
JSStringRef jsName = JSPropertyNameArrayGetNameAtIndex(jsNames, i);
NSString *name = (NSString *)CFBridgingRelease(JSStringCopyCFString(kCFAllocatorDefault, jsName));
JSValueRef jsValueRef = JSObjectGetProperty(ctx, jsObject, jsName, NULL);
JSStringRef valueJS = JSValueToStringCopy(ctx, jsValueRef, NULL);
NSString *value = (NSString *)CFBridgingRelease(JSStringCopyCFString(kCFAllocatorDefault, valueJS));
JSStringRelease(valueJS);
[userInfo setObject:value forKey:name];
}
JSPropertyNameArrayRelease(jsNames);
NSException *mochaException = [NSException exceptionWithName:MOJavaScriptException reason:error userInfo:userInfo];
return mochaException;
}
}
- (NSException *)exceptionWithJSException:(JSValueRef)exception {
return [Mocha exceptionWithJSException:exception context:_ctx];
}
- (void)throwJSException:(JSValueRef)exceptionJS {
id object = [self objectForJSValue:exceptionJS];
if ([object isKindOfClass:[NSException class]]) {
// Rethrow ObjC exceptions that were boxed within the runtime
@throw object;
}
else {
// Throw all other types of exceptions as an NSException
NSException *exception = [self exceptionWithJSException:exceptionJS];
if (exception != nil) {
@throw exception;
}
}
}
#pragma mark -
#pragma mark BridgeSupport Metadata
- (BOOL)loadFrameworkWithName:(NSString *)frameworkName {
BOOL success = NO;
NSFileManager *fileManager = [[NSFileManager alloc] init];
for (NSString *path in _frameworkSearchPaths) {
NSString *frameworkPath = [path stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.framework", frameworkName]];
if ([fileManager fileExistsAtPath:frameworkPath]) {
success = [self loadFrameworkWithName:frameworkName inDirectory:path];
if (success) {
break;
}
}
}
return success;
}
- (BOOL)loadFrameworkWithName:(NSString *)frameworkName inDirectory:(NSString *)directory {
NSString *frameworkPath = [directory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.framework", frameworkName]];
// Load the framework
NSString *libPath = [frameworkPath stringByAppendingPathComponent:frameworkName];
void *address = dlopen([libPath UTF8String], RTLD_LAZY);
if (!address) {
//NSLog(@"ERROR: Could not load framework dylib: %@, %@", frameworkName, libPath);
return NO;
}
// Load the BridgeSupport data
NSString *bridgeSupportPath = [frameworkPath stringByAppendingPathComponent:[NSString stringWithFormat:@"Resources/BridgeSupport"]];
[self loadBridgeSupportFilesAtPath:bridgeSupportPath];
return YES;
}
- (BOOL)loadBridgeSupportFilesAtPath:(NSString *)path {
NSFileManager *fileManager = [[NSFileManager alloc] init];
BOOL isDirectory = NO;
if ([fileManager fileExistsAtPath:path isDirectory:&isDirectory]) {
NSMutableArray *filesToLoad = [NSMutableArray array];
if (isDirectory) {
NSArray *contents = [fileManager contentsOfDirectoryAtPath:path error:nil];
for (NSString *filePathComponent in contents) {
NSString *filePath = [path stringByAppendingPathComponent:filePathComponent];
if ([[filePath pathExtension] isEqualToString:@"bridgesupport"]
|| [[filePathComponent pathExtension] isEqualToString:@"dylib"]) {
[filesToLoad addObject:filePath];
}
}
}
else {
if ([[path pathExtension] isEqualToString:@"bridgesupport"]
|| [[path pathExtension] isEqualToString:@"dylib"]) {
[filesToLoad addObject:path];
}
else {
return NO;
}
}
// Load files
for (NSString *filePath in filesToLoad) {
if ([[filePath pathExtension] isEqualToString:@"bridgesupport"]) {
// BridgeSupport
NSError *error = nil;
if (![[MOBridgeSupportController sharedController] loadBridgeSupportAtURL:[NSURL fileURLWithPath:filePath] error:&error]) {
return NO;
}
}
#if !TARGET_OS_IPHONE
else if ([[filePath pathExtension] isEqualToString:@"dylib"]) {
// dylib
dlopen([filePath UTF8String], RTLD_LAZY);
}
#endif
}
return YES;
}
else {
return NO;
}
}
- (NSArray *)frameworkSearchPaths {
return _frameworkSearchPaths;
}
- (void)setFrameworkSearchPaths:(NSArray *)frameworkSearchPaths {
[_frameworkSearchPaths setArray:frameworkSearchPaths];
}
- (void)addFrameworkSearchPath:(NSString *)path {
[self insertFrameworkSearchPath:path atIndex:[_frameworkSearchPaths count]];
}
- (void)insertFrameworkSearchPath:(NSString *)path atIndex:(NSUInteger)idx {
[_frameworkSearchPaths insertObject:path atIndex:idx];
}
- (void)removeFrameworkSearchPathAtIndex:(NSUInteger)idx {
[_frameworkSearchPaths removeObjectAtIndex:idx];
}
#pragma mark -
#pragma mark Garbage Collection
- (void)garbageCollect {
JSGarbageCollect(_ctx);
}
#pragma mark -
#pragma mark Support
- (void)installBuiltins {
MOMethod *loadFramework = [MOMethod methodWithTarget:self selector:@selector(loadFrameworkWithName:)];
[self setValue:loadFramework forKey:@"framework"];
MOMethod *addFrameworkSearchPath = [MOMethod methodWithTarget:self selector:@selector(addFrameworkSearchPath:)];
[self setValue:addFrameworkSearchPath forKey:@"addFrameworkSearchPath"];
[self setValue:[MOObjCRuntime sharedRuntime] forKey:@"objc"];
}
- (void)cleanUp {
// Cleanup if we created the JavaScriptCore context
if (_ownsContext) {
// [self unlinkAllReferences];
[self garbageCollect];
}
}
//- (void)unlinkAllReferences {
// // Null and delete every reference to every live object
// [self evalJSString:@"for (var i in this) { this[i] = null; delete this[i]; }"];
//}
#pragma mark -
#pragma mark Symbols
- (NSArray *)globalSymbolNames {
NSMutableArray *symbols = [NSMutableArray array];
// Exported objects
[symbols addObjectsFromArray:[_exportedObjects allKeys]];
// ObjC runtime
[symbols addObjectsFromArray:[[MOObjCRuntime sharedRuntime] classes]];
[symbols addObjectsFromArray:[[MOObjCRuntime sharedRuntime] protocols]];
// BridgeSupport
NSDictionary *bridgeSupportSymbols = [[MOBridgeSupportController sharedController] performQueryForSymbolsOfType:[NSArray arrayWithObjects:
[MOBridgeSupportFunction class],
[MOBridgeSupportConstant class],
[MOBridgeSupportEnum class],
nil]];
[symbols addObjectsFromArray:[bridgeSupportSymbols allKeys]];
return symbols;
}
@end
#pragma mark -
#pragma mark Mocha Scripting
@implementation NSObject (MochaScripting)
+ (BOOL)isSelectorExcludedFromMochaScript:(SEL)selector {
return NO;
}
+ (SEL)selectorForMochaPropertyName:(NSString *)propertyName {
return MOSelectorFromPropertyName(propertyName);
}
- (void)finalizeForMochaScript {
// no-op
}
@end
#pragma mark -
#pragma mark Global Object
JSValueRef Mocha_getProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyNameJS, JSValueRef *exception) {
NSString *propertyName = (NSString *)CFBridgingRelease(JSStringCopyCFString(kCFAllocatorDefault, propertyNameJS));
if ([propertyName isEqualToString:@"__mocha__"]) {
return NULL;
}
Mocha *runtime = [Mocha runtimeWithContext:ctx];
//
// Exported objects
//
id exportedObj = [runtime valueForKey:propertyName];
if (exportedObj != nil) {
JSValueRef ret = [runtime JSValueForObject:exportedObj];
return ret;
}
//
// ObjC class
//
Class objCClass = NSClassFromString(propertyName);
if (objCClass != Nil && ![propertyName isEqualToString:@"Object"]) {
JSValueRef ret = [runtime JSValueForObject:objCClass];
return ret;
}
//
// Query BridgeSupport for property
//
MOBridgeSupportSymbol *symbol = [[MOBridgeSupportController sharedController] performQueryForSymbolName:propertyName];
if (symbol != nil) {
// Functions
if ([symbol isKindOfClass:[MOBridgeSupportFunction class]]) {
return [runtime JSValueForObject:symbol];
}
// Constants
else if ([symbol isKindOfClass:[MOBridgeSupportConstant class]]) {
NSString *type = nil;
#if __LP64__
type = [(MOBridgeSupportConstant *)symbol type64];
if (type == nil) {
type = [(MOBridgeSupportConstant *)symbol type];
}
#else
type = [(MOBridgeSupportConstant *)symbol type];
#endif
// Raise if there is no type
if (type == nil) {
NSException *e = [NSException exceptionWithName:MORuntimeException reason:[NSString stringWithFormat:@"No type defined for symbol: %@", symbol] userInfo:nil];
if (exception != NULL) {
*exception = [runtime JSValueForObject:e];
}
return NULL;
}
// Grab symbol
void *symbol = dlsym(RTLD_DEFAULT, [propertyName UTF8String]);
if (!symbol) {
NSException *e = [NSException exceptionWithName:MORuntimeException reason:[NSString stringWithFormat:@"Symbol not found: %@", symbol] userInfo:nil];
if (exception != NULL) {