Skip to content
Navigation Menu
{{ message }}
forked from joeferner/node-java
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathutils.cpp
More file actions
748 lines (648 loc) · 28.2 KB
/
Copy pathutils.cpp
File metadata and controls
748 lines (648 loc) · 28.2 KB
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
#include "utils.h"
#include <string.h>
#include <algorithm>
#include <sstream>
#include "javaObject.h"
#include "java.h"
#define MODIFIER_STATIC 9
jobject v8ToJava_javaObject(JNIEnv* env, v8::Local<v8::Object> obj);
jobject v8ToJava_javaLong(JNIEnv* env, v8::Local<v8::Object> obj);
void javaReflectionGetMethods(JNIEnv *env, jclass clazz, std::list<jobject>* methods, bool includeStatic) {
jclass clazzclazz = env->FindClass("java/lang/Class");
jmethodID clazz_getMethods = env->GetMethodID(clazzclazz, "getMethods", "()[Ljava/lang/reflect/Method;");
jclass methodClazz = env->FindClass("java/lang/reflect/Method");
jmethodID method_getModifiers = env->GetMethodID(methodClazz, "getModifiers", "()I");
jobjectArray methodObjects = (jobjectArray)env->CallObjectMethod(clazz, clazz_getMethods);
checkJavaException(env);
jsize methodCount = env->GetArrayLength(methodObjects);
for(jsize i=0; i<methodCount; i++) {
jobject method = env->GetObjectArrayElement(methodObjects, i);
jint methodModifiers = env->CallIntMethod(method, method_getModifiers);
assert(!env->ExceptionCheck());
if(!includeStatic && (methodModifiers & MODIFIER_STATIC) == MODIFIER_STATIC) {
continue;
}
methods->push_back(method);
}
}
void javaReflectionGetConstructors(JNIEnv *env, jclass clazz, std::list<jobject>* methods) {
jclass clazzclazz = env->FindClass("java/lang/Class");
jmethodID clazz_getConstructors = env->GetMethodID(clazzclazz, "getConstructors", "()[Ljava/lang/reflect/Constructor;");
jobjectArray constructorObjects = (jobjectArray)env->CallObjectMethod(clazz, clazz_getConstructors);
checkJavaException(env);
jsize constructorCount = env->GetArrayLength(constructorObjects);
for(jsize i=0; i<constructorCount; i++) {
jobject constructor = env->GetObjectArrayElement(constructorObjects, i);
methods->push_back(constructor);
}
}
void javaReflectionGetFields(JNIEnv *env, jclass clazz, std::list<jobject>* fields) {
jclass clazzclazz = env->FindClass("java/lang/Class");
jmethodID clazz_getFields = env->GetMethodID(clazzclazz, "getFields", "()[Ljava/lang/reflect/Field;");
jclass fieldClazz = env->FindClass("java/lang/reflect/Field");
jmethodID field_getModifiers = env->GetMethodID(fieldClazz, "getModifiers", "()I");
jobjectArray fieldObjects = (jobjectArray)env->CallObjectMethod(clazz, clazz_getFields);
assert(!env->ExceptionCheck());
jsize fieldCount = env->GetArrayLength(fieldObjects);
for(jsize i=0; i<fieldCount; i++) {
jobject field = env->GetObjectArrayElement(fieldObjects, i);
jint fieldModifiers = env->CallIntMethod(field, field_getModifiers);
checkJavaException(env);
if((fieldModifiers & MODIFIER_STATIC) == MODIFIER_STATIC) {
continue;
}
fields->push_back(field);
}
}
std::string javaToString(JNIEnv *env, jstring str) {
const char* chars = env->GetStringUTFChars(str, NULL);
std::string results = chars;
env->ReleaseStringUTFChars(str, chars);
return results;
}
std::string javaArrayToString(JNIEnv *env, jobjectArray arr) {
if(arr == NULL) {
return "(null)";
}
std::ostringstream result;
result << "[";
jsize count = env->GetArrayLength(arr);
for(jsize i=0; i<count; i++) {
if(i != 0) {
result << ", ";
}
jobject obj = env->GetObjectArrayElement(arr, i);
result << javaObjectToString(env, obj);
}
result << "]";
return result.str();
}
std::string javaObjectToString(JNIEnv *env, jobject obj) {
if(obj == NULL) {
return "(null)";
}
jclass objClazz = env->GetObjectClass(obj);
jmethodID methodId = env->GetMethodID(objClazz, "toString", "()Ljava/lang/String;");
jstring result = (jstring)env->CallObjectMethod(obj, methodId);
assert(!env->ExceptionCheck());
return javaToString(env, result);
}
std::string javaMethodCallToString(JNIEnv *env, jobject obj, jmethodID methodId, jarray args) {
char temp[100];
std::ostringstream result;
sprintf(temp, "%p", env);
result << temp;
result << ": ";
result << javaObjectToString(env, obj);
result << ": ";
sprintf(temp, "%p", methodId);
result << temp;
result << ": (";
jsize arraySize = env->GetArrayLength(args);
for(int i=0; i<arraySize; i++) {
if(i != 0) {
result << ", ";
}
jobject arg = env->GetObjectArrayElement((jobjectArray)args, i);
result << javaObjectToString(env, arg);
}
result << ")";
return result.str();
}
JNIEnv* javaGetEnv(JavaVM* jvm, jobject classLoader) {
JNIEnv *env = NULL;
int ret = jvm->GetEnv((void**)&env, JNI_BEST_VERSION);
if (ret == JNI_EDETACHED) {
JavaVMAttachArgs attachArgs;
attachArgs.version = JNI_BEST_VERSION;
attachArgs.name = NULL;
attachArgs.group = NULL;
jvm->AttachCurrentThread((void**)&env, &attachArgs);
jclass threadClazz = env->FindClass("java/lang/Thread");
jmethodID thread_currentThread = env->GetStaticMethodID(threadClazz, "currentThread", "()Ljava/lang/Thread;");
jmethodID thread_setContextClassLoader = env->GetMethodID(threadClazz, "setContextClassLoader", "(Ljava/lang/ClassLoader;)V");
jobject currentThread = env->CallStaticObjectMethod(threadClazz, thread_currentThread);
checkJavaException(env);
env->CallObjectMethod(currentThread, thread_setContextClassLoader, classLoader);
assert(!env->ExceptionCheck());
env->DeleteLocalRef(threadClazz);
env->DeleteLocalRef(currentThread);
}
return env;
}
jobject getSystemClassLoader(JNIEnv *env) {
jclass threadClazz = env->FindClass("java/lang/Thread");
jmethodID thread_currentThread = env->GetStaticMethodID(threadClazz, "currentThread", "()Ljava/lang/Thread;");
jmethodID thread_getContextClassLoader = env->GetMethodID(threadClazz, "getContextClassLoader", "()Ljava/lang/ClassLoader;");
jobject currentThread = env->CallStaticObjectMethod(threadClazz, thread_currentThread);
checkJavaException(env);
jobject result = env->CallObjectMethod(currentThread, thread_getContextClassLoader);
checkJavaException(env);
return result;
}
jvalueType javaGetType(JNIEnv *env, jclass type) {
jclass clazzClazz = env->FindClass("java/lang/Class");
jmethodID class_isArray = env->GetMethodID(clazzClazz, "isArray", "()Z");
jboolean isArray = env->CallBooleanMethod(type, class_isArray);
assert(!env->ExceptionCheck());
if(isArray) {
return TYPE_ARRAY;
} else {
// TODO: has to be a better way
std::string str = javaObjectToString(env, type);
const char *typeStr = str.c_str();
//printf("javaGetType: %s\n", typeStr);
if(strcmp(typeStr, "void") == 0) {
return TYPE_VOID;
} else if(strcmp(typeStr, "int") == 0 || strcmp(typeStr, "class java.lang.Integer") == 0) {
return TYPE_INT;
} else if(strcmp(typeStr, "double") == 0 || strcmp(typeStr, "class java.lang.Double") == 0) {
return TYPE_DOUBLE;
} else if(strcmp(typeStr, "float") == 0 || strcmp(typeStr, "class java.lang.Float") == 0) {
return TYPE_FLOAT;
} else if(strcmp(typeStr, "long") == 0 || strcmp(typeStr, "class java.lang.Long") == 0) {
return TYPE_LONG;
} else if(strcmp(typeStr, "boolean") == 0 || strcmp(typeStr, "class java.lang.Boolean") == 0) {
return TYPE_BOOLEAN;
} else if(strcmp(typeStr, "short") == 0 || strcmp(typeStr, "class java.lang.Short") == 0) {
return TYPE_SHORT;
} else if(strcmp(typeStr, "byte") == 0 || strcmp(typeStr, "class java.lang.Byte") == 0) {
return TYPE_BYTE;
} else if(strcmp(typeStr, "class java.lang.String") == 0) {
return TYPE_STRING;
}
return TYPE_OBJECT;
}
}
jclass javaFindClass(JNIEnv* env, std::string& className) {
std::string searchClassName = className;
std::replace(searchClassName.begin(), searchClassName.end(), '.', '/');
// Alternate find class trying to fix Class.forName
// jclass threadClazz = env->FindClass("java/lang/Thread");
// jmethodID thread_getCurrentThread = env->GetStaticMethodID(threadClazz, "currentThread", "()Ljava/lang/Thread;");
// jmethodID thread_getContextClassLoader = env->GetMethodID(threadClazz, "getContextClassLoader", "()Ljava/lang/ClassLoader;");
//
// jclass classLoaderClazz = env->FindClass("java/lang/ClassLoader");
// jmethodID classLoader_loadClass = env->GetMethodID(classLoaderClazz, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;");
//
// jobject currentThread = env->CallObjectMethod(threadClazz, thread_getCurrentThread);
// jobject classLoader = env->CallObjectMethod(currentThread, thread_getContextClassLoader);
// jstring searchClassNameJava = env->NewStringUTF(className.c_str());
// jclass clazz = (jclass)env->CallObjectMethod(classLoader, classLoader_loadClass, searchClassNameJava);
jclass clazz = env->FindClass(searchClassName.c_str());
return clazz;
}
jobject javaFindField(JNIEnv* env, jclass clazz, std::string& fieldName) {
jobject result = NULL;
jclass clazzclazz = env->GetObjectClass(clazz);
jclass fieldClazz = env->FindClass("java/lang/reflect/Field");
jmethodID field_getName = env->GetMethodID(fieldClazz, "getName", "()Ljava/lang/String;");
jmethodID class_getFields = env->GetMethodID(clazzclazz, "getFields", "()[Ljava/lang/reflect/Field;");
jobjectArray fieldObjects = (jobjectArray)env->CallObjectMethod(clazz, class_getFields);
checkJavaException(env);
jsize fieldCount = env->GetArrayLength(fieldObjects);
for(jsize i=0; i<fieldCount; i++) {
jobject field = env->GetObjectArrayElement(fieldObjects, i);
jstring fieldNameJava = (jstring)env->CallObjectMethod(field, field_getName);
checkJavaException(env);
std::string itFieldName = javaToString(env, fieldNameJava);
if(strcmp(itFieldName.c_str(), fieldName.c_str()) == 0) {
result = field;
break;
}
}
return result;
}
jobject v8ToJava(JNIEnv* env, v8::Local<v8::Value> arg) {
if(arg.IsEmpty() || arg->IsNull() || arg->IsUndefined()) {
return NULL;
}
if(arg->IsArray()) {
v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(arg);
uint32_t arraySize = array->Length();
jclass objectClazz = env->FindClass("java/lang/Object");
jobjectArray result = env->NewObjectArray(arraySize, objectClazz, NULL);
for(uint32_t i=0; i<arraySize; i++) {
jobject val = v8ToJava(env, array->Get(i));
env->SetObjectArrayElement(result, i, val);
}
return result;
}
if(arg->IsString()) {
v8::String::Utf8Value val(arg->ToString());
return env->NewStringUTF(*val);
}
if(arg->IsInt32() || arg->IsUint32()) {
jint val = arg->ToInt32()->Value();
jclass clazz = env->FindClass("java/lang/Integer");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(I)V");
return env->NewObject(clazz, constructor, val);
}
if(arg->IsNumber()) {
jdouble val = arg->ToNumber()->Value();
jclass clazz = env->FindClass("java/lang/Double");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(D)V");
return env->NewObject(clazz, constructor, val);
}
if(arg->IsBoolean()) {
jboolean val = arg->ToBoolean()->Value();
jclass clazz = env->FindClass("java/lang/Boolean");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(Z)V");
return env->NewObject(clazz, constructor, val);
}
if(arg->IsObject()) {
v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast(arg);
v8::Local<v8::Value> isJavaObject = obj->GetHiddenValue(NanNew<v8::String>(V8_HIDDEN_MARKER_JAVA_OBJECT));
if(!isJavaObject.IsEmpty() && isJavaObject->IsBoolean()) {
return v8ToJava_javaObject(env, obj);
}
v8::Local<v8::Value> isJavaLong = obj->GetHiddenValue(NanNew<v8::String>(V8_HIDDEN_MARKER_JAVA_LONG));
if(!isJavaLong.IsEmpty() && isJavaLong->IsBoolean()) {
return v8ToJava_javaLong(env, obj);
}
}
// TODO: handle other arg types. Don't print here, see instanceof-test#non-java object
// v8::String::AsciiValue typeStr(arg);
// printf("v8ToJava: Unhandled type: %s\n", *typeStr);
return NULL;
}
jobject v8ToJava_javaObject(JNIEnv* env, v8::Local<v8::Object> obj) {
JavaObject* javaObject = node::ObjectWrap::Unwrap<JavaObject>(obj);
return javaObject->getObject();
}
void checkJavaException(JNIEnv* env) {
if(env->ExceptionCheck()) {
jthrowable ex = env->ExceptionOccurred();
env->ExceptionClear();
std::string exString = javaExceptionToString(env, ex);
printf("%s\n", exString.c_str());
assert(false);
}
}
jobject v8ToJava_javaLong(JNIEnv* env, v8::Local<v8::Object> obj) {
jobject longValue = v8ToJava(env, obj->Get(NanNew<v8::String>("longValue")));
jclass longClazz = env->FindClass("java/lang/Long");
jmethodID long_constructor = env->GetMethodID(longClazz, "<init>", "(Ljava/lang/String;)V");
jobject jobj = env->NewObject(longClazz, long_constructor, longValue);
return jobj;
}
jobjectArray v8ToJava(JNIEnv* env, _NAN_METHOD_ARGS_TYPE args, int start, int end) {
jclass clazz = env->FindClass("java/lang/Object");
jobjectArray results = env->NewObjectArray(end-start, clazz, NULL);
for(int i=start; i<end; i++) {
jobject val = v8ToJava(env, args[i]);
env->SetObjectArrayElement(results, i - start, val);
}
return results;
}
std::string javaExceptionToString(JNIEnv* env, jthrowable ex) {
jclass stringWriterClazz = env->FindClass("java/io/StringWriter");
jmethodID stringWriter_constructor = env->GetMethodID(stringWriterClazz, "<init>", "()V");
jmethodID stringWriter_toString = env->GetMethodID(stringWriterClazz, "toString", "()Ljava/lang/String;");
jobject stringWriter = env->NewObject(stringWriterClazz, stringWriter_constructor);
jclass printWriterClazz = env->FindClass("java/io/PrintWriter");
jmethodID printWriter_constructor = env->GetMethodID(printWriterClazz, "<init>", "(Ljava/io/Writer;)V");
jobject printWriter = env->NewObject(printWriterClazz, printWriter_constructor, stringWriter);
jclass throwableClazz = env->FindClass("java/lang/Throwable");
jmethodID throwable_printStackTrace = env->GetMethodID(throwableClazz, "printStackTrace", "(Ljava/io/PrintWriter;)V");
env->CallObjectMethod(ex, throwable_printStackTrace, printWriter);
checkJavaException(env);
jstring strObj = (jstring)env->CallObjectMethod(stringWriter, stringWriter_toString);
checkJavaException(env);
return javaToString(env, strObj);
}
v8::Handle<v8::Value> javaExceptionToV8(Java* java, JNIEnv* env, jthrowable ex, const std::string& alternateMessage) {
std::ostringstream msg;
msg << alternateMessage;
if(ex) {
msg << "\n" << javaExceptionToString(env, ex);
v8::Local<v8::Value> v8ex = v8::Exception::Error(NanNew<v8::String>(msg.str().c_str()));
((v8::Object*)*v8ex)->Set(NanNew<v8::String>("cause"), javaToV8(java, env, ex));
return v8ex;
}
return v8::Exception::Error(NanNew<v8::String>(msg.str().c_str()));
}
v8::Handle<v8::Value> javaExceptionToV8(Java* java, JNIEnv* env, const std::string& alternateMessage) {
jthrowable ex = env->ExceptionOccurred();
env->ExceptionClear();
return javaExceptionToV8(java, env, ex, alternateMessage);
}
jvalueType javaGetArrayComponentType(JNIEnv *env, jobjectArray array) {
jclass objectClazz = env->FindClass("java/lang/Object");
jclass clazzclazz = env->FindClass("java/lang/Class");
jmethodID object_getClass = env->GetMethodID(objectClazz, "getClass", "()Ljava/lang/Class;");
jobject arrayClass = env->CallObjectMethod(array, object_getClass);
assert(!env->ExceptionCheck());
jmethodID class_getComponentType = env->GetMethodID(clazzclazz, "getComponentType", "()Ljava/lang/Class;");
jobject arrayComponentTypeClass = env->CallObjectMethod(arrayClass, class_getComponentType);
checkJavaException(env);
jvalueType arrayComponentType = javaGetType(env, (jclass)arrayComponentTypeClass);
return arrayComponentType;
}
v8::Handle<v8::Value> javaArrayToV8(Java* java, JNIEnv* env, jobjectArray objArray) {
if(objArray == NULL) {
return NanNull();
}
jvalueType arrayComponentType = javaGetArrayComponentType(env, objArray);
//printf("javaArrayToV8: %d %s\n", arrayComponentType, javaObjectToString(env, objArray).c_str());
jsize arraySize = env->GetArrayLength(objArray);
//printf("array size: %d\n", arraySize);
v8::Handle<v8::Array> result = NanNew<v8::Array>(arraySize);
switch(arrayComponentType) {
case TYPE_INT:
{
jint* elems = env->GetIntArrayElements((jintArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
result->Set(i, NanNew<v8::Integer>(elems[i]));
}
env->ReleaseIntArrayElements((jintArray)objArray, elems, 0);
}
break;
case TYPE_BYTE:
{
jbyte* elems = env->GetByteArrayElements((jbyteArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
result->Set(i, NanNew<v8::Number>(elems[i]));
}
env->ReleaseByteArrayElements((jbyteArray)objArray, elems, 0);
}
break;
case TYPE_BOOLEAN:
{
jboolean* elems = env->GetBooleanArrayElements((jbooleanArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
result->Set(i, NanNew<v8::Boolean>(elems[i]));
}
env->ReleaseBooleanArrayElements((jbooleanArray)objArray, elems, 0);
}
break;
case TYPE_SHORT:
{
jshort* elems = env->GetShortArrayElements((jshortArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
result->Set(i, NanNew<v8::Number>(elems[i]));
}
env->ReleaseShortArrayElements((jshortArray)objArray, elems, 0);
}
break;
case TYPE_DOUBLE:
{
jdouble* elems = env->GetDoubleArrayElements((jdoubleArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
result->Set(i, NanNew<v8::Number>(elems[i]));
}
env->ReleaseDoubleArrayElements((jdoubleArray)objArray, elems, 0);
}
break;
case TYPE_FLOAT:
{
jfloat* elems = env->GetFloatArrayElements((jfloatArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
result->Set(i, NanNew<v8::Number>(elems[i]));
}
env->ReleaseFloatArrayElements((jfloatArray)objArray, elems, 0);
}
break;
case TYPE_LONG:
{
jlong* elems = env->GetLongArrayElements((jlongArray)objArray, 0);
for(jsize i=0; i<arraySize; i++) {
jobject obj = longToJavaLongObj(env, elems[i]);
result->Set(i, JavaObject::New(java, obj));
}
env->ReleaseLongArrayElements((jlongArray)objArray, elems, 0);
}
break;
default:
for(jsize i=0; i<arraySize; i++) {
jobject obj = env->GetObjectArrayElement(objArray, i);
v8::Handle<v8::Value> item = javaToV8(java, env, obj);
result->Set(i, item);
}
break;
}
return result;
}
v8::Handle<v8::Value> javaToV8(Java* java, JNIEnv* env, jobject obj) {
return javaToV8(java, env, obj, NULL);
}
v8::Handle<v8::Value> javaToV8(Java* java, JNIEnv* env, jobject obj, DynamicProxyData* dynamicProxyData) {
if(obj == NULL) {
return NanNull();
}
jclass objClazz = env->GetObjectClass(obj);
jvalueType resultType = javaGetType(env, objClazz);
//printf("javaToV8: %d %s\n", resultType, javaObjectToString(env, obj).c_str());
switch(resultType) {
case TYPE_ARRAY:
{
v8::Handle<v8::Value> result = javaArrayToV8(java, env, (jobjectArray)obj);
return result;
}
case TYPE_VOID:
return NanUndefined();
case TYPE_BOOLEAN:
{
jclass booleanClazz = env->FindClass("java/lang/Boolean");
jmethodID boolean_booleanValue = env->GetMethodID(booleanClazz, "booleanValue", "()Z");
bool result = env->CallBooleanMethod(obj, boolean_booleanValue);
assert(!env->ExceptionCheck());
return NanNew<v8::Boolean>(result);
}
case TYPE_BYTE:
{
jclass byteClazz = env->FindClass("java/lang/Byte");
jmethodID byte_byteValue = env->GetMethodID(byteClazz, "byteValue", "()B");
jbyte result = env->CallByteMethod(obj, byte_byteValue);
checkJavaException(env);
return NanNew<v8::Number>(result);
}
case TYPE_LONG:
{
jclass longClazz = env->FindClass("java/lang/Long");
jmethodID long_longValue = env->GetMethodID(longClazz, "longValue", "()J");
jlong result = env->CallLongMethod(obj, long_longValue);
checkJavaException(env);
std::string strValue = javaObjectToString(env, obj);
v8::Local<v8::Value> v8Result = NanNew<v8::NumberObject>((double)result);
v8::NumberObject* v8ResultNumberObject = v8::NumberObject::Cast(*v8Result);
v8ResultNumberObject->Set(NanNew<v8::String>("longValue"), NanNew<v8::String>(strValue.c_str()));
v8ResultNumberObject->SetHiddenValue(NanNew<v8::String>(V8_HIDDEN_MARKER_JAVA_LONG), NanNew<v8::Boolean>(true));
return v8Result;
}
case TYPE_INT:
{
jclass integerClazz = env->FindClass("java/lang/Integer");
jmethodID integer_intValue = env->GetMethodID(integerClazz, "intValue", "()I");
jint result = env->CallIntMethod(obj, integer_intValue);
checkJavaException(env);
return NanNew<v8::Integer>(result);
}
case TYPE_SHORT:
{
jclass shortClazz = env->FindClass("java/lang/Short");
jmethodID short_shortValue = env->GetMethodID(shortClazz, "shortValue", "()S");
jshort result = env->CallShortMethod(obj, short_shortValue);
assert(!env->ExceptionCheck());
return NanNew<v8::Integer>(result);
}
case TYPE_DOUBLE:
{
jclass doubleClazz = env->FindClass("java/lang/Double");
jmethodID double_doubleValue = env->GetMethodID(doubleClazz, "doubleValue", "()D");
jdouble result = env->CallDoubleMethod(obj, double_doubleValue);
checkJavaException(env);
return NanNew<v8::Number>(result);
}
case TYPE_FLOAT:
{
jclass floatClazz = env->FindClass("java/lang/Float");
jmethodID float_floatValue = env->GetMethodID(floatClazz, "floatValue", "()F");
jfloat result = env->CallFloatMethod(obj, float_floatValue);
assert(!env->ExceptionCheck());
return NanNew<v8::Number>(result);
}
case TYPE_STRING:
return NanNew<v8::String>(javaObjectToString(env, obj).c_str());
case TYPE_OBJECT:
if (dynamicProxyData != NULL) {
return JavaProxyObject::New(java, obj, dynamicProxyData);
}
return JavaObject::New(java, obj);
default:
printf("javaToV8: unhandled type: 0x%03x\n", resultType);
return JavaObject::New(java, obj);
}
return NanUndefined();
}
jobjectArray javaObjectArrayToClasses(JNIEnv *env, jobjectArray objs) {
jclass clazzClazz = env->FindClass("java/lang/Class");
jsize objsLength = env->GetArrayLength(objs);
jobjectArray results = env->NewObjectArray(objsLength, clazzClazz, NULL);
for(jsize i=0; i<objsLength; i++) {
jobject elem = env->GetObjectArrayElement(objs, i);
if(elem == NULL) {
env->SetObjectArrayElement(results, i, NULL);
} else {
jclass objClazz = env->GetObjectClass(elem);
env->SetObjectArrayElement(results, i, objClazz);
}
}
return results;
}
jobject javaFindMethod(JNIEnv *env, jclass clazz, std::string& methodName, jobjectArray methodArgs) {
std::string::size_type parenLoc = methodName.find("(");
if(parenLoc != std::string::npos) {
jobject method = NULL;
std::string methodSig = methodName.substr(parenLoc);
methodName = methodName.substr(0, parenLoc);
jmethodID methodID = env->GetStaticMethodID(clazz, methodName.c_str(), methodSig.c_str());
if(methodID != 0) {
method = env->ToReflectedMethod(clazz, methodID, true);
} else {
methodID = env->GetMethodID(clazz, methodName.c_str(), methodSig.c_str());
if(methodID != 0) {
method = env->ToReflectedMethod(clazz, methodID, true);
}
}
env->ExceptionClear(); // If GetStaticMethodID can't find the method it throws an exception and we need to just return NULL
// cast arguments
if(method != NULL) {
javaCastArguments(env, methodArgs, method);
}
return method;
} else {
jclass methodUtilsClazz = env->FindClass("com/nearinfinity/org/apache/commons/lang3/reflect/MethodUtils");
jmethodID methodUtils_getMatchingAccessibleMethod = env->GetStaticMethodID(methodUtilsClazz, "getMatchingAccessibleMethod", "(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;");
const char *methodNameCStr = methodName.c_str();
jstring methodNameJavaStr = env->NewStringUTF(methodNameCStr);
jobjectArray methodArgClasses = javaObjectArrayToClasses(env, methodArgs);
jobject method = env->CallStaticObjectMethod(methodUtilsClazz, methodUtils_getMatchingAccessibleMethod, clazz, methodNameJavaStr, methodArgClasses);
checkJavaException(env);
return method;
}
}
void javaCastArguments(JNIEnv *env, jobjectArray methodArgs, jobject method) {
jclass castingUtilsClazz = env->FindClass("node/CastingUtils");
jmethodID castingUtilsClazz_cast = env->GetStaticMethodID(castingUtilsClazz, "cast", "(Ljava/lang/reflect/Method;[Ljava/lang/Object;)V");
env->CallStaticObjectMethod(castingUtilsClazz, castingUtilsClazz_cast, method, methodArgs);
}
jobject javaFindConstructor(JNIEnv *env, jclass clazz, jobjectArray methodArgs) {
jclass constructorUtilsClazz = env->FindClass("com/nearinfinity/org/apache/commons/lang3/reflect/ConstructorUtils");
jmethodID constructorUtils_getMatchingAccessibleConstructor = env->GetStaticMethodID(constructorUtilsClazz, "getMatchingAccessibleConstructor", "(Ljava/lang/Class;[Ljava/lang/Class;)Ljava/lang/reflect/Constructor;");
jobjectArray methodArgClasses = javaObjectArrayToClasses(env, methodArgs);
jobject method = env->CallStaticObjectMethod(constructorUtilsClazz, constructorUtils_getMatchingAccessibleConstructor, clazz, methodArgClasses);
assert(!env->ExceptionCheck());
return method;
}
jobject longToJavaLongObj(JNIEnv *env, jlong val) {
jclass longClass = env->FindClass("java/lang/Long");
jmethodID constructor = env->GetMethodID(longClass, "<init>", "(J)V");
jobject result = env->NewObject(longClass, constructor, val);
return result;
}
int dynamicProxyDataVerify(DynamicProxyData* data) {
if(data->markerStart == DYNAMIC_PROXY_DATA_MARKER_START && data->markerEnd == DYNAMIC_PROXY_DATA_MARKER_END) {
return 1;
}
printf("*** ERROR: Lost reference to the dynamic proxy. You must maintain a reference in javascript land using ref() and unref(). (%p) ***\n", data);
return 0;
}
std::string methodNotFoundToString(JNIEnv *env, jclass clazz, std::string methodName, bool constructor, _NAN_METHOD_ARGS_TYPE args, int argStart, int argEnd) {
std::ostringstream startOfMessage;
std::ostringstream msg;
jclass classClazz = env->FindClass("java/lang/Class");
jmethodID class_getName = env->GetMethodID(classClazz, "getName", "()Ljava/lang/String;");
startOfMessage << "Could not find method \"" << methodName.c_str() << "(";
for(int i=argStart; i<argEnd; i++) {
jobject val = v8ToJava(env, args[i]);
if(i != argStart) {
startOfMessage << ", ";
}
if(val == NULL) {
startOfMessage << "(null)";
} else {
jclass argClass = env->GetObjectClass(val);
jstring argClassNameJava = (jstring)env->CallObjectMethod(argClass, class_getName);
checkJavaException(env);
std::string argClassName = javaToString(env, argClassNameJava);
startOfMessage << argClassName;
}
}
startOfMessage << ")\" on class \""<< javaObjectToString(env, clazz).c_str() << "\".";
msg << startOfMessage.str() << " Possible matches:\n";
jclass memberClazz = env->FindClass("java/lang/reflect/Member");
jmethodID member_getName = env->GetMethodID(memberClazz, "getName", "()Ljava/lang/String;");
std::list<jobject> methods;
if(constructor) {
javaReflectionGetConstructors(env, clazz, &methods);
} else {
javaReflectionGetMethods(env, clazz, &methods, true);
}
int count = 0;
for(std::list<jobject>::iterator it = methods.begin(); it != methods.end(); ++it) {
jstring methodNameTestJava = (jstring)env->CallObjectMethod(*it, member_getName);
assert(!env->ExceptionCheck());
std::string methodNameTest = javaToString(env, methodNameTestJava);
if(methodNameTest == methodName) {
msg << " " << javaObjectToString(env, *it).c_str() << "\n";
count++;
}
}
if(count == 0) {
std::ostringstream noMethodsMsg;
noMethodsMsg << startOfMessage.str() << " No methods with that name.";
return noMethodsMsg.str();
}
return msg.str();
}
void unref(DynamicProxyData* dynamicProxyData) {
if(!dynamicProxyDataVerify(dynamicProxyData)) {
return;
}
NanDisposePersistent(dynamicProxyData->jsObject);
NanDisposePersistent(dynamicProxyData->functions);
dynamicProxyData->markerStart = 0;
dynamicProxyData->markerEnd = 0;
delete dynamicProxyData;
}
You can’t perform that action at this time.