Execute.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #include <iostream>
  25 #include <set>
  26 #include <map>
  27 #include <iomanip>
  28 #include <sstream>
  29 #include <cmath>
  30
  31 #include <dlfcn.h>
  32 #include <dirent.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35
  36 #include <sys/mman.h>
  37 #include <sys/stat.h>
  38
  39 #include <sqlite3.h>
  40
  41 #include "sig/parse.hpp"
  42 #include "sig/ffi_type.hpp"
  43
  44 #include "Code.hpp"
  45 #include "Decode.hpp"
  46 #include "Error.hpp"
  47 #include "Execute.hpp"
  48 #include "Internal.hpp"
  49 #include "JavaScript.hpp"
  50 #include "Pooling.hpp"
  51 #include "String.hpp"
  52
  53 const char *sqlite3_column_string(sqlite3_stmt *stmt, int n) {
  54     return reinterpret_cast<const char *>(sqlite3_column_text(stmt, n));
  55 }
  56
  57 char *sqlite3_column_pooled(CYPool &pool, sqlite3_stmt *stmt, int n) {
  58     if (const char *value = sqlite3_column_string(stmt, n))
  59         return pool.strdup(value);
  60     else return NULL;
  61 }
  62
  63 static std::vector<CYHook *> &GetHooks() {
  64     static std::vector<CYHook *> hooks;
  65     return hooks;
  66 }
  67
  68 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  69     GetHooks().push_back(hook);
  70 }
  71
  72 /* JavaScript Properties {{{ */
  73 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  74     return JSObjectHasProperty(context, object, name);
  75 }
  76
  77 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  78     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  79 }
  80
  81 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  82     return _jsccall(JSObjectGetProperty, context, object, name);
  83 }
  84
  85 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  86     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  87 }
  88
  89 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  90     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  91 }
  92
  93 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  94     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  95 }
  96
  97 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  98     JSObjectSetPrototype(context, object, value);
  99     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
 100 }
 101 /* }}} */
 102 /* JavaScript Strings {{{ */
 103 JSStringRef CYCopyJSString(const char *value) {
 104     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 105 }
 106
 107 JSStringRef CYCopyJSString(JSStringRef value) {
 108     return value == NULL ? NULL : JSStringRetain(value);
 109 }
 110
 111 JSStringRef CYCopyJSString(CYUTF8String value) {
 112     if (memchr(value.data, '\0', value.size) != NULL) {
 113         CYPool pool;
 114         return CYCopyJSString(CYPoolUTF16String(pool, value));
 115     } else if (value.data[value.size] != '\0') {
 116         CYPool pool;
 117         return CYCopyJSString(pool.strmemdup(value.data, value.size));
 118     } else {
 119         return CYCopyJSString(value.data);
 120     }
 121 }
 122
 123 JSStringRef CYCopyJSString(CYUTF16String value) {
 124     return JSStringCreateWithCharacters(value.data, value.size);
 125 }
 126
 127 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 128     if (JSValueIsNull(context, value))
 129         return NULL;
 130     return _jsccall(JSValueToStringCopy, context, value);
 131 }
 132
 133 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 134     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 135 }
 136
 137 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 138     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 139 }
 140
 141 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 142     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 143     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 144     return utf8.data;
 145 }
 146
 147 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 148     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 149 }
 150 /* }}} */
 151 /* Index Offsets {{{ */
 152 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 153     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 154 }
 155 /* }}} */
 156
 157 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 158
 159 static JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 160     if (JSObjectMakeArray$ != NULL)
 161         return _jsccall(*JSObjectMakeArray$, context, length, values);
 162     else {
 163         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 164         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 165         return CYCastJSObject(context, value);
 166     }
 167 }
 168
 169 static JSClassRef All_;
 170 static JSClassRef Context_;
 171 static JSClassRef CArray_;
 172 static JSClassRef CString_;
 173 JSClassRef Functor_;
 174 static JSClassRef Global_;
 175 static JSClassRef Pointer_;
 176 static JSClassRef Struct_;
 177
 178 JSStringRef Array_s;
 179 JSStringRef cy_s;
 180 JSStringRef cyi_s;
 181 JSStringRef length_s;
 182 JSStringRef message_s;
 183 JSStringRef name_s;
 184 JSStringRef pop_s;
 185 JSStringRef prototype_s;
 186 JSStringRef push_s;
 187 JSStringRef splice_s;
 188 JSStringRef toCYON_s;
 189 JSStringRef toJSON_s;
 190 JSStringRef toPointer_s;
 191 JSStringRef toString_s;
 192 JSStringRef weak_s;
 193
 194 static sqlite3 *database_;
 195
 196 static JSStringRef Result_;
 197
 198 void CYFinalize(JSObjectRef object) {
 199     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 200     _assert(internal->count_ != _not(unsigned));
 201     if (--internal->count_ == 0)
 202         delete internal;
 203 }
 204
 205 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 206     //_assert(false);
 207     return aggregate;
 208 }
 209
 210 JSClassRef Type_privateData::Class_;
 211
 212 struct Context :
 213     CYData
 214 {
 215     JSGlobalContextRef context_;
 216
 217     Context(JSGlobalContextRef context) :
 218         context_(context)
 219     {
 220     }
 221 };
 222
 223 struct CArray :
 224     CYOwned
 225 {
 226     Type_privateData *type_;
 227     size_t length_;
 228
 229     CArray(void *value, JSContextRef context, JSObjectRef owner, size_t length, const sig::Type &type, ffi_type *ffi) :
 230         CYOwned(value, context, owner),
 231         type_(new(*pool_) Type_privateData(type, ffi)),
 232         length_(length)
 233     {
 234     }
 235 };
 236
 237 struct CString :
 238     CYOwned
 239 {
 240     CString(char *value, JSContextRef context, JSObjectRef owner) :
 241         CYOwned(value, context, owner)
 242     {
 243     }
 244 };
 245
 246 struct Pointer :
 247     CYOwned
 248 {
 249     Type_privateData *type_;
 250
 251     Pointer(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type) :
 252         CYOwned(value, context, owner),
 253         type_(new(*pool_) Type_privateData(type))
 254     {
 255     }
 256
 257     Pointer(void *value, JSContextRef context, JSObjectRef owner, const char *encoding) :
 258         CYOwned(value, context, owner),
 259         type_(new(*pool_) Type_privateData(encoding))
 260     {
 261     }
 262 };
 263
 264 struct Struct_privateData :
 265     CYOwned
 266 {
 267     Type_privateData *type_;
 268
 269     Struct_privateData(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type, ffi_type *ffi) :
 270         CYOwned(value, context, owner),
 271         type_(new(*pool_) Type_privateData(type, ffi))
 272     {
 273     }
 274 };
 275
 276 JSObjectRef CYMakeCArray(JSContextRef context, void *data, size_t length, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 277     CArray *internal(new CArray(data, context, owner, length, type, ffi));
 278
 279     if (owner == NULL) {
 280         size_t size(ffi->size * length);
 281         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 282         memcpy(copy, internal->value_, size);
 283         internal->value_ = copy;
 284     }
 285
 286     return JSObjectMake(context, CArray_, internal);
 287 }
 288
 289 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 290     CString *internal(new CString(pointer, context, owner));
 291     if (owner == NULL)
 292         internal->value_ = internal->pool_->strdup(static_cast<const char *>(internal->value_));
 293     return JSObjectMake(context, CString_, internal);
 294 }
 295
 296 JSObjectRef CYMakeStruct(JSContextRef context, void *data, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 297     Struct_privateData *internal(new Struct_privateData(data, context, owner, type, ffi));
 298
 299     if (owner == NULL) {
 300         size_t size(ffi->size);
 301         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 302         memcpy(copy, internal->value_, size);
 303         internal->value_ = copy;
 304     }
 305
 306     return JSObjectMake(context, Struct_, internal);
 307 }
 308
 309 static void *CYCastSymbol(const char *name) {
 310     for (CYHook *hook : GetHooks())
 311         if (hook->CastSymbol != NULL)
 312             if (void *value = (*hook->CastSymbol)(name))
 313                 return value;
 314     return dlsym(RTLD_DEFAULT, name);
 315 }
 316
 317 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 318     return JSValueMakeBoolean(context, value);
 319 }
 320
 321 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 322     return JSValueMakeNumber(context, value);
 323 }
 324
 325 #define CYCastJSValue_(Type_) \
 326     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 327         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 328         return JSValueMakeNumber(context, static_cast<double>(value)); \
 329     }
 330
 331 CYCastJSValue_(signed short int)
 332 CYCastJSValue_(unsigned short int)
 333 CYCastJSValue_(signed int)
 334 CYCastJSValue_(unsigned int)
 335 CYCastJSValue_(signed long int)
 336 CYCastJSValue_(unsigned long int)
 337 CYCastJSValue_(signed long long int)
 338 CYCastJSValue_(unsigned long long int)
 339
 340 JSValueRef CYJSUndefined(JSContextRef context) {
 341     return JSValueMakeUndefined(context);
 342 }
 343
 344 double CYCastDouble(JSContextRef context, JSValueRef value) {
 345     return _jsccall(JSValueToNumber, context, value);
 346 }
 347
 348 bool CYCastBool(JSContextRef context, JSValueRef value) {
 349     return JSValueToBoolean(context, value);
 350 }
 351
 352 JSValueRef CYJSNull(JSContextRef context) {
 353     return JSValueMakeNull(context);
 354 }
 355
 356 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 357     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 358 }
 359
 360 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 361     return CYCastJSValue(context, CYJSString(value));
 362 }
 363
 364 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 365     return _jsccall(JSValueToObject, context, value);
 366 }
 367
 368 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 369     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 370 }
 371
 372 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 373     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 374 }
 375
 376 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 377     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 378 }
 379
 380 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 381     return JSValueIsStrictEqual(context, lhs, rhs);
 382 }
 383
 384 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 385     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 386 }
 387
 388 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 389     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 390 }
 391
 392 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 393     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 394     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 395 }
 396
 397 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 398     return CYArrayPush(context, array, 1, &value);
 399 }
 400
 401 template <size_t Size_>
 402 class CYArrayBuilder {
 403   private:
 404     JSContextRef context_;
 405     JSObjectRef &array_;
 406     size_t size_;
 407     JSValueRef values_[Size_];
 408
 409     void flush() {
 410         if (array_ == NULL)
 411             array_ = CYObjectMakeArray(context_, size_, values_);
 412         else
 413             CYArrayPush(context_, array_, size_, values_);
 414     }
 415
 416   public:
 417     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 418         context_(context),
 419         array_(array),
 420         size_(0)
 421     {
 422     }
 423
 424     ~CYArrayBuilder() {
 425         flush();
 426     }
 427
 428     void operator ()(JSValueRef value) {
 429         if (size_ == Size_) {
 430             flush();
 431             size_ = 0;
 432         }
 433
 434         values_[size_++] = value;
 435     }
 436 };
 437
 438 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 439     FILE *file(stdout);
 440
 441     if (count == 0)
 442         fputc('\n', file);
 443     else {
 444         CYPool pool;
 445         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 446         fwrite(string.data, string.size, 1, file);
 447     }
 448
 449     fflush(file);
 450     return CYJSUndefined(context);
 451 } CYCatch(NULL) }
 452
 453 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 454
 455 _visible void CYGarbageCollect(JSContextRef context) {
 456     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 457 }
 458
 459 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 460     CYPool pool;
 461     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 462     std::stringbuf value(std::string(before.data, before.size));
 463     CYUTF8String after(CYPoolCode(pool, value));
 464     return CYCastJSValue(context, CYJSString(after));
 465 } CYCatch_(NULL, "SyntaxError") }
 466
 467 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 468     CYGarbageCollect(context);
 469     return CYJSUndefined(context);
 470 } CYCatch(NULL) }
 471
 472 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 473     switch (JSType type = JSValueGetType(context, value)) {
 474         case kJSTypeUndefined:
 475             return "undefined";
 476         case kJSTypeNull:
 477             return "null";
 478         case kJSTypeBoolean:
 479             return CYCastBool(context, value) ? "true" : "false";
 480
 481         case kJSTypeNumber: {
 482             std::ostringstream str;
 483             CYNumerify(str, CYCastDouble(context, value));
 484             std::string value(str.str());
 485             return pool.strmemdup(value.c_str(), value.size());
 486         } break;
 487
 488         case kJSTypeString: {
 489             std::ostringstream str;
 490             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 491             CYStringify(str, string.data, string.size);
 492             std::string value(str.str());
 493             return pool.strmemdup(value.c_str(), value.size());
 494         } break;
 495
 496         case kJSTypeObject:
 497             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 498         default:
 499             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 500     }
 501 } CYCatch(NULL) }
 502
 503 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 504     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 505 }
 506
 507 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 508     if (objects != NULL)
 509         return CYPoolCCYON(pool, context, value, *objects);
 510     else {
 511         std::set<void *> objects;
 512         return CYPoolCCYON(pool, context, value, objects);
 513     }
 514 }
 515
 516 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 517     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 518     if (CYIsCallable(context, toCYON)) {
 519         // XXX: this needs to be abstracted behind some kind of function
 520         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 521         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 522         _assert(value != NULL);
 523         return CYPoolCString(pool, context, value);
 524     }
 525
 526     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 527     if (CYIsCallable(context, toJSON)) {
 528         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 529         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 530     }
 531
 532     if (JSObjectIsFunction(context, object)) {
 533         JSValueRef toString(CYGetProperty(context, object, toString_s));
 534         if (CYIsCallable(context, toString)) {
 535             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 536             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 537             _assert(value != NULL);
 538             return CYPoolCString(pool, context, value);
 539         }
 540     }
 541
 542     _assert(objects.insert(object).second);
 543
 544     std::ostringstream str;
 545
 546     str << '{';
 547
 548     // XXX: this is, sadly, going to leak
 549     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 550
 551     bool comma(false);
 552
 553     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 554         if (comma)
 555             str << ',';
 556         else
 557             comma = true;
 558
 559         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 560         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 561
 562         if (CYIsKey(string))
 563             str << string.data;
 564         else
 565             CYStringify(str, string.data, string.size);
 566
 567         str << ':';
 568
 569         try {
 570             JSValueRef value(CYGetProperty(context, object, name));
 571             str << CYPoolCCYON(pool, context, value, objects);
 572         } catch (const CYException &error) {
 573             str << "@error";
 574         }
 575     }
 576
 577     JSPropertyNameArrayRelease(names);
 578
 579     str << '}';
 580
 581     std::string string(str.str());
 582     return pool.strmemdup(string.c_str(), string.size());
 583 }
 584
 585 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 586     if (count == 0)
 587         return NULL;
 588     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 589 }
 590
 591 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 592     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 593     // XXX: this is horribly inefficient
 594     std::set<void *> backup;
 595     if (objects == NULL)
 596         objects = &backup;
 597
 598     CYPool pool;
 599     std::ostringstream str;
 600
 601     str << '[';
 602
 603     JSValueRef length(CYGetProperty(context, _this, length_s));
 604     bool comma(false);
 605
 606     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 607         if (comma)
 608             str << ',';
 609         else
 610             comma = true;
 611
 612         try {
 613             JSValueRef value(CYGetProperty(context, _this, index));
 614             if (!JSValueIsUndefined(context, value))
 615                 str << CYPoolCCYON(pool, context, value, *objects);
 616             else {
 617                 str << ',';
 618                 comma = false;
 619             }
 620         } catch (const CYException &error) {
 621             str << "@error";
 622         }
 623     }
 624
 625     str << ']';
 626
 627     std::string value(str.str());
 628     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 629 } CYCatch(NULL) }
 630
 631 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 632     CYPool pool;
 633     std::ostringstream str;
 634
 635     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 636     CYStringify(str, string.data, string.size);
 637
 638     std::string value(str.str());
 639     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 640 } CYCatch(NULL) }
 641
 642 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 643     Pointer *internal(new Pointer(pointer, context, owner, type));
 644     return JSObjectMake(context, Pointer_, internal);
 645 }
 646
 647 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const char *encoding, JSObjectRef owner) {
 648     Pointer *internal(new Pointer(pointer, context, owner, encoding));
 649     return JSObjectMake(context, Pointer_, internal);
 650 }
 651
 652 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 653     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 654 }
 655
 656 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 657     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 658     if (function == NULL)
 659         return NULL;
 660
 661     cy::Functor *internal(new cy::Functor(encoding, function));
 662     ++internal->count_;
 663     return JSObjectMake(context, Functor_, internal);
 664 }
 665
 666 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 667     return CYGetOffset(CYPoolCString(pool, context, value), index);
 668 }
 669
 670 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 671     if (value == NULL)
 672         return NULL;
 673     else switch (JSValueGetType(context, value)) {
 674         case kJSTypeNull:
 675             return NULL;
 676         case kJSTypeObject: {
 677             JSObjectRef object((JSObjectRef) value);
 678             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 679                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 680                 return internal->value_;
 681             }
 682             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 683             if (CYIsCallable(context, toPointer)) {
 684                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 685                 _assert(value != NULL);
 686                 return CYCastPointer_(context, value, guess);
 687             }
 688         } default:
 689             if (guess != NULL)
 690                 *guess = true;
 691         case kJSTypeNumber:
 692             double number(CYCastDouble(context, value));
 693             if (!std::isnan(number))
 694                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 695             if (guess == NULL)
 696                 throw CYJSError(context, "cannot convert value to pointer");
 697             else {
 698                 *guess = true;
 699                 return NULL;
 700             }
 701     }
 702 }
 703
 704 namespace sig {
 705
 706 // XXX: this is somehow not quite a template :/
 707
 708 template <>
 709 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 710     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 711 }
 712
 713 #define CYPoolFFI_(Type_) \
 714 template <> \
 715 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 716     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 717 }
 718
 719 CYPoolFFI_(char)
 720 CYPoolFFI_(double)
 721 CYPoolFFI_(float)
 722 CYPoolFFI_(signed char)
 723 CYPoolFFI_(signed int)
 724 CYPoolFFI_(signed long int)
 725 CYPoolFFI_(signed long long int)
 726 CYPoolFFI_(signed short int)
 727 CYPoolFFI_(unsigned char)
 728 CYPoolFFI_(unsigned int)
 729 CYPoolFFI_(unsigned long int)
 730 CYPoolFFI_(unsigned long long int)
 731 CYPoolFFI_(unsigned short int)
 732
 733 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 734     _assert(false);
 735 }
 736
 737 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 738     _assert(false);
 739 }
 740
 741 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 742     bool guess(false);
 743     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 744     if (guess && pool != NULL)
 745         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 746 }
 747
 748 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 749     _assert(false);
 750 }
 751
 752 static void CYArrayCopy(CYPool *pool, JSContextRef context, uint8_t *base, size_t length, const sig::Type &type, ffi_type *ffi, JSValueRef value, JSObjectRef object) {
 753     for (size_t index(0); index != length; ++index) {
 754         JSValueRef rhs;
 755         if (object == NULL)
 756             rhs = value;
 757         else {
 758             rhs = CYGetProperty(context, object, index);
 759             if (JSValueIsUndefined(context, rhs))
 760                 throw CYJSError(context, "unable to extract array value");
 761         }
 762
 763         type.PoolFFI(pool, context, ffi, base, rhs);
 764         base += ffi->size;
 765     }
 766 }
 767
 768 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 769     bool guess(false);
 770     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value, &guess);
 771     if (!guess || pool == NULL || !JSValueIsObject(context, value))
 772         return;
 773     JSObjectRef object(CYCastJSObject(context, value));
 774     if (CYHasProperty(context, object, length_s)) {
 775         size_t length(CYArrayLength(context, object));
 776         ffi_type *element(type.GetFFI(*pool));
 777         size_t size(element->size * length);
 778         uint8_t *base(pool->malloc<uint8_t>(size, element->alignment));
 779         CYArrayCopy(pool, context, base, length, type, element, value, object);
 780         *reinterpret_cast<void **>(data) = base;
 781     }
 782 }
 783
 784 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 785     if (size == 0)
 786         return;
 787     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 788     JSObjectRef object(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 789     CYArrayCopy(pool, context, base, size, type, ffi->elements[0], value, object);
 790 }
 791
 792 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 793     _assert(!overlap);
 794
 795     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 796     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 797     for (size_t index(0); index != signature.count; ++index) {
 798         sig::Element *element(&signature.elements[index]);
 799         ffi_type *field(ffi->elements[index]);
 800
 801         JSValueRef rhs;
 802         if (aggregate == NULL)
 803             rhs = value;
 804         else {
 805             rhs = CYGetProperty(context, aggregate, index);
 806             if (JSValueIsUndefined(context, rhs)) {
 807                 if (element->name != NULL)
 808                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 809                 else
 810                     goto undefined;
 811                 if (JSValueIsUndefined(context, rhs)) undefined:
 812                     throw CYJSError(context, "unable to extract structure value");
 813             }
 814         }
 815
 816         element->type->PoolFFI(pool, context, field, base, rhs);
 817         base += field->size;
 818     }
 819 }
 820
 821 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 822     _assert(false);
 823 }
 824
 825 #define CYFromFFI_(Type_) \
 826 template <> \
 827 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 828     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 829 }
 830
 831 CYFromFFI_(bool)
 832 CYFromFFI_(char)
 833 CYFromFFI_(double)
 834 CYFromFFI_(float)
 835 CYFromFFI_(signed char)
 836 CYFromFFI_(signed int)
 837 CYFromFFI_(signed long int)
 838 CYFromFFI_(signed long long int)
 839 CYFromFFI_(signed short int)
 840 CYFromFFI_(unsigned char)
 841 CYFromFFI_(unsigned int)
 842 CYFromFFI_(unsigned long int)
 843 CYFromFFI_(unsigned long long int)
 844 CYFromFFI_(unsigned short int)
 845
 846 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 847     return CYJSUndefined(context);
 848 }
 849
 850 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 851     _assert(false);
 852 }
 853
 854 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 855     if (char *value = *reinterpret_cast<char **>(data))
 856         return CYMakeCString(context, value, owner);
 857     return CYJSNull(context);
 858 }
 859
 860 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 861     _assert(false);
 862 }
 863
 864 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 865     if (void *value = *reinterpret_cast<void **>(data))
 866         return CYMakePointer(context, value, type, NULL, owner);
 867     return CYJSNull(context);
 868 }
 869
 870 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 871     return CYMakeCArray(context, data, size, type, ffi->elements[0], owner);
 872 }
 873
 874 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 875     return CYMakeStruct(context, data, *this, ffi, owner);
 876 }
 877
 878 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 879     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), signature);
 880 }
 881
 882 }
 883
 884 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 885     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 886
 887     JSContextRef context(internal->context_);
 888
 889     size_t count(internal->cif_.nargs);
 890     JSValueRef values[count];
 891
 892     for (size_t index(0); index != count; ++index)
 893         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 894
 895     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 896     if (internal->cif_.rtype != &ffi_type_void)
 897         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 898 }
 899
 900 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 901     return CYCallAsFunction(context, function, NULL, count, values);
 902 }
 903
 904 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 905     // XXX: in case of exceptions this will leak
 906     // XXX: in point of fact, this may /need/ to leak :(
 907     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 908
 909 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 910     void *executable;
 911     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 912
 913     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 914     _assert(status == FFI_OK);
 915
 916     internal->value_ = executable;
 917 #else
 918     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 919         NULL, sizeof(ffi_closure),
 920         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 921         -1, 0
 922     )));
 923
 924     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 925     _assert(status == FFI_OK);
 926
 927     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 928
 929     internal->value_ = closure;
 930 #endif
 931
 932     return internal;
 933 }
 934
 935 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 936     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 937     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 938     // XXX: see above notes about needing to leak
 939     JSValueProtect(CYGetJSContext(context), object);
 940     return object;
 941 }
 942
 943 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 944     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 945 }
 946
 947 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 948     return CYCastJSObject(context, CYGetCachedValue(context, name));
 949 }
 950
 951 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 952     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 953
 954     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 955     if (function) {
 956         JSObjectRef function(CYCastJSObject(context, value));
 957         return CYMakeFunctor(context, function, signature);
 958     } else {
 959         void (*function)()(CYCastPointer<void (*)()>(context, value));
 960         return CYMakeFunctor(context, function, signature);
 961     }
 962 }
 963
 964 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 965     CYPool pool;
 966     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 967     char *string(static_cast<char *>(internal->value_));
 968
 969     ssize_t offset;
 970     if (!CYGetOffset(pool, context, property, offset))
 971         return NULL;
 972
 973     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 974 } CYCatch(NULL) }
 975
 976 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 977     CYPool pool;
 978     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 979     char *string(static_cast<char *>(internal->value_));
 980
 981     ssize_t offset;
 982     if (!CYGetOffset(pool, context, property, offset))
 983         return false;
 984
 985     const char *data(CYPoolCString(pool, context, value));
 986     string[offset] = *data;
 987     return true;
 988 } CYCatch(false) }
 989
 990 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 991     Type_privateData *typical(internal->type_);
 992     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
 993     if (type == NULL)
 994         return false;
 995
 996     const char *name(CYPoolCString(pool, context, property));
 997     size_t length(strlen(name));
 998     double number(CYCastDouble(name, length));
 999
1000     size_t count(type->signature.count);
1001
1002     if (std::isnan(number)) {
1003         if (property == NULL)
1004             return false;
1005
1006         sig::Element *elements(type->signature.elements);
1007
1008         for (size_t local(0); local != count; ++local) {
1009             sig::Element *element(&elements[local]);
1010             if (element->name != NULL && strcmp(name, element->name) == 0) {
1011                 index = local;
1012                 goto base;
1013             }
1014         }
1015
1016         return false;
1017     } else {
1018         index = static_cast<ssize_t>(number);
1019         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1020             return false;
1021     }
1022
1023   base:
1024     ffi_type **elements(typical->GetFFI()->elements);
1025
1026     size_t offset(0);
1027     for (ssize_t local(0); local != index; ++local) {
1028         offset += elements[local]->size;
1029         CYAlign(offset, elements[local + 1]->alignment);
1030     }
1031
1032     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1033     return true;
1034 }
1035
1036 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1037     ssize_t offset;
1038     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1039         offset = 0;
1040     else if (!CYGetOffset(pool, context, property, offset))
1041         return NULL;
1042     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1043 }
1044
1045 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1046     ffi_type *ffi(typical->GetFFI());
1047     void *base(Offset_(pool, context, property, data, ffi));
1048     if (base == NULL)
1049         return NULL;
1050     return typical->type_->FromFFI(context, ffi, base, false, owner);
1051 }
1052
1053 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1054     ffi_type *ffi(typical->GetFFI());
1055     void *base(Offset_(pool, context, property, data, ffi));
1056     if (base == NULL)
1057         return false;
1058
1059     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1060     return true;
1061 }
1062
1063 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1064     CYPool pool;
1065     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1066     if (JSStringIsEqual(property, length_s))
1067         return CYCastJSValue(context, internal->length_);
1068     Type_privateData *typical(internal->type_);
1069     JSObjectRef owner(internal->GetOwner() ?: object);
1070     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1071 } CYCatch(NULL) }
1072
1073 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1074     CYPool pool;
1075     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1076     Type_privateData *typical(internal->type_);
1077     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1078 } CYCatch(false) }
1079
1080 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1081     CYPool pool;
1082     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1083
1084     Type_privateData *typical(internal->type_);
1085
1086     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1087         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1088             return NULL;
1089         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->signature);
1090     }
1091
1092     JSObjectRef owner(internal->GetOwner() ?: object);
1093     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1094 } CYCatch(NULL) }
1095
1096 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1097     CYPool pool;
1098     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1099     Type_privateData *typical(internal->type_);
1100     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1101 } CYCatch(false) }
1102
1103 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1104     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1105     Type_privateData *typical(internal->type_);
1106     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1107 } CYCatch(NULL) }
1108
1109 static JSValueRef Struct_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1110     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1111     return CYMakeType(context, *internal->type_->type_);
1112 } CYCatch(NULL) }
1113
1114 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1115     CYPool pool;
1116     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1117     Type_privateData *typical(internal->type_);
1118     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1119
1120     ssize_t index;
1121     uint8_t *base;
1122
1123     if (!Index_(pool, context, internal, property, index, base))
1124         return NULL;
1125
1126     JSObjectRef owner(internal->GetOwner() ?: object);
1127
1128     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1129 } CYCatch(NULL) }
1130
1131 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1132     CYPool pool;
1133     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1134     Type_privateData *typical(internal->type_);
1135     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1136
1137     ssize_t index;
1138     uint8_t *base;
1139
1140     if (!Index_(pool, context, internal, property, index, base))
1141         return false;
1142
1143     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1144     return true;
1145 } CYCatch(false) }
1146
1147 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1148     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1149     Type_privateData *typical(internal->type_);
1150     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1151
1152     if (type == NULL)
1153         return;
1154
1155     size_t count(type->signature.count);
1156     sig::Element *elements(type->signature.elements);
1157
1158     char number[32];
1159
1160     for (size_t index(0); index != count; ++index) {
1161         const char *name;
1162         name = elements[index].name;
1163
1164         if (name == NULL) {
1165             sprintf(number, "%zu", index);
1166             name = number;
1167         }
1168
1169         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1170     }
1171 }
1172
1173 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1174     ffi_call(cif, function, value, values);
1175 }
1176
1177 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
1178     if (setups + count != signature->count - 1)
1179         throw CYJSError(context, "incorrect number of arguments to ffi function");
1180
1181     size_t size(setups + count);
1182     void *values[size];
1183     memcpy(values, setup, sizeof(void *) * setups);
1184
1185     for (size_t index(setups); index != size; ++index) {
1186         sig::Element *element(&signature->elements[index + 1]);
1187         ffi_type *ffi(cif->arg_types[index]);
1188         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1189         element->type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1190     }
1191
1192     uint8_t value[cif->rtype->size];
1193
1194     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1195     // XXX: this only supports one hook, but it is a bad idea anyway
1196     for (CYHook *hook : GetHooks())
1197         if (hook->CallFunction != NULL)
1198             call = hook->CallFunction;
1199
1200     call(pool, context, cif, function, value, values);
1201     return signature->elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1202 }
1203
1204 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1205     CYPool pool;
1206     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1207     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1208 } CYCatch(NULL) }
1209
1210 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1211     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1212     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1213         throw CYJSError(context, "cannot call a pointer to non-function");
1214     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1215     return CYCallAsFunction(context, functor, _this, count, arguments);
1216 } CYCatch(NULL) }
1217
1218 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1219     Type_privateData *internal(new Type_privateData(type));
1220     return JSObjectMake(context, Type_privateData::Class_, internal);
1221 }
1222
1223 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1224     CYPool pool;
1225     sig::Function type;
1226     sig::Copy(pool, type.signature, *signature);
1227     return CYMakeType(context, type);
1228 }
1229
1230 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1231     sqlite3_stmt *statement;
1232
1233     _sqlcall(sqlite3_prepare(database_,
1234         "select "
1235             "\"cache\".\"code\", "
1236             "\"cache\".\"flags\" "
1237         "from \"cache\" "
1238         "where"
1239             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1240             " \"cache\".\"name\" = ?"
1241         " limit 1"
1242     , -1, &statement, NULL));
1243
1244     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1245
1246     bool success;
1247     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1248         success = false;
1249     else {
1250         success = true;
1251         code = sqlite3_column_pooled(pool, statement, 0);
1252         flags = sqlite3_column_int(statement, 1);
1253     }
1254
1255     _sqlcall(sqlite3_finalize(statement));
1256     return success;
1257 }
1258
1259 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1260     if (JSStringIsEqualToUTF8CString(property, "errno"))
1261         return true;
1262
1263     JSObjectRef global(CYGetGlobalObject(context));
1264     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1265     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1266
1267     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1268         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1269             if (CYHasProperty(context, space, property))
1270                 return true;
1271
1272     CYPool pool;
1273     const char *code;
1274     unsigned flags;
1275     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1276         return true;
1277
1278     return false;
1279 }
1280
1281 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1282     if (JSStringIsEqualToUTF8CString(property, "errno"))
1283         return CYCastJSValue(context, errno);
1284
1285     JSObjectRef global(CYGetGlobalObject(context));
1286     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1287     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1288
1289     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1290         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1291             if (JSValueRef value = CYGetProperty(context, space, property))
1292                 if (!JSValueIsUndefined(context, value))
1293                     return value;
1294
1295     CYPool pool;
1296     const char *code;
1297     unsigned flags;
1298     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1299         CYUTF8String parsed;
1300
1301         try {
1302             parsed = CYPoolCode(pool, code);
1303         } catch (const CYException &error) {
1304             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1305         }
1306
1307         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1308
1309         if (flags == 0) {
1310             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1311             CYSetProperty(context, cache, property, result);
1312         }
1313
1314         return result;
1315     }
1316
1317     return NULL;
1318 } CYCatch(NULL) }
1319
1320 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1321     _assert(count == 1);
1322     CYPool pool;
1323     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1324
1325     JSObjectRef array(NULL);
1326
1327     {
1328     CYArrayBuilder<1024> values(context, array);
1329
1330     sqlite3_stmt *statement;
1331
1332     if (prefix.size == 0)
1333         _sqlcall(sqlite3_prepare(database_,
1334             "select "
1335                 "\"cache\".\"name\" "
1336             "from \"cache\" "
1337             "where"
1338                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1339         , -1, &statement, NULL));
1340     else {
1341         _sqlcall(sqlite3_prepare(database_,
1342             "select "
1343                 "\"cache\".\"name\" "
1344             "from \"cache\" "
1345             "where"
1346                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1347                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1348         , -1, &statement, NULL));
1349
1350         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1351
1352         char *after(pool.strndup(prefix.data, prefix.size));
1353         ++after[prefix.size - 1];
1354         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1355     }
1356
1357     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1358         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1359
1360     _sqlcall(sqlite3_finalize(statement));
1361     }
1362
1363     return array;
1364 } CYCatch(NULL) }
1365
1366 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1367     JSObjectRef global(CYGetGlobalObject(context));
1368     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1369     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1370
1371     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1372         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1373             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1374             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1375                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1376             JSPropertyNameArrayRelease(subset);
1377         }
1378 }
1379
1380 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1381     _assert(false);
1382 } CYCatch(NULL) }
1383
1384 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1385     _assert(false);
1386 } CYCatch(NULL) }
1387
1388 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1389     _assert(false);
1390 } CYCatch(NULL) }
1391
1392 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1393     CYPool pool;
1394
1395     if (false) {
1396     } else if (count == 1) {
1397         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1398         sig::Signature signature;
1399         sig::Parse(pool, &signature, encoding, &Structor_);
1400         return CYMakeType(context, *signature.elements[0].type);
1401     } else if (count == 2) {
1402         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1403         size_t count(CYArrayLength(context, types));
1404
1405         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1406
1407         sig::Aggregate type(false);
1408         type.signature.elements = new(pool) sig::Element[count];
1409         type.signature.count = count;
1410
1411         for (size_t i(0); i != count; ++i) {
1412             sig::Element &element(type.signature.elements[i]);
1413             element.offset = _not(size_t);
1414
1415             JSValueRef name(CYArrayGet(context, names, i));
1416             if (JSValueIsUndefined(context, name))
1417                 element.name = NULL;
1418             else
1419                 element.name = CYPoolCString(pool, context, name);
1420
1421             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1422             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1423             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1424             element.type = internal->type_;
1425         }
1426
1427         return CYMakeType(context, type);
1428     } else {
1429         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1430     }
1431 } CYCatch(NULL) }
1432
1433 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1434     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1435
1436     CYPool pool;
1437
1438     type.signature.elements = new(pool) sig::Element[1 + count];
1439     type.signature.count = 1 + count;
1440
1441     type.signature.elements[0].name = NULL;
1442     type.signature.elements[0].type = internal->type_;
1443     type.signature.elements[0].offset = _not(size_t);
1444
1445     for (size_t i(0); i != count; ++i) {
1446         sig::Element &element(type.signature.elements[i + 1]);
1447         element.name = NULL;
1448         element.offset = _not(size_t);
1449
1450         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1451         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1452         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1453
1454         element.type = internal->type_;
1455     }
1456
1457     return CYMakeType(context, type);
1458 } CYCatch(NULL) }
1459
1460 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1461     if (count != 1)
1462         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1463     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1464
1465     CYPool pool;
1466     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1467     if (index == _not(size_t))
1468         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1469
1470     sig::Array type(*internal->type_, index);
1471     return CYMakeType(context, type);
1472 } CYCatch(NULL) }
1473
1474 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1475     sig::Block type;
1476     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1477 }
1478
1479 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1480     if (count != 0)
1481         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1482     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1483
1484     CYPool pool;
1485     sig::Type *type(internal->type_->Copy(pool));
1486     type->flags |= JOC_TYPE_CONST;
1487     return CYMakeType(context, *type);
1488 } CYCatch(NULL) }
1489
1490 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1491     sig::Function type;
1492     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1493 }
1494
1495 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1496     if (count != 0)
1497         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1498     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1499
1500     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1501         return CYMakeType(context, sig::String());
1502     else
1503         return CYMakeType(context, sig::Pointer(*internal->type_));
1504 } CYCatch(NULL) }
1505
1506 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1507     if (count != 1)
1508         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1509     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1510
1511     CYPool pool;
1512     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1513 } CYCatch(NULL) }
1514
1515 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1516     if (count != 1)
1517         throw CYJSError(context, "incorrect number of arguments to type cast function");
1518     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1519
1520     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1521         return CYMakeFunctor(context, arguments[0], function->signature);
1522
1523     CYPool pool;
1524     sig::Type *type(internal->type_);
1525     ffi_type *ffi(internal->GetFFI());
1526     void *value(pool.malloc<void>(ffi->size, ffi->alignment));
1527     type->PoolFFI(&pool, context, ffi, value, arguments[0]);
1528     return type->FromFFI(context, ffi, value);
1529 } CYCatch(NULL) }
1530
1531 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1532     if (count != 0)
1533         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1534     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1535
1536     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1537     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1538     ffi_type *ffi(internal->GetFFI());
1539     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1540     memset(value->value_, 0, ffi->size);
1541     return pointer;
1542 } CYCatch(NULL) }
1543
1544 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1545     if (count != 2)
1546         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1547     CYPool pool;
1548     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1549     sig::Signature signature;
1550     sig::Parse(pool, &signature, encoding, &Structor_);
1551     return CYMakeFunctor(context, arguments[0], signature);
1552 } CYCatch(NULL) }
1553
1554 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1555     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1556     JSObjectRef owner(internal->GetOwner() ?: object);
1557     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1558 } CYCatch(NULL) }
1559
1560 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1561     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1562     JSObjectRef owner(internal->GetOwner() ?: object);
1563     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1564 } CYCatch(NULL) }
1565
1566 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1567     CYPool pool;
1568     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1569
1570     sig::Function type;
1571     sig::Copy(pool, type.signature, internal->signature_);
1572
1573     return CYMakePointer(context, internal->value_, type, NULL, NULL);
1574 } CYCatch(NULL) }
1575
1576 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1577     return _this;
1578 } CYCatch(NULL) }
1579
1580 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1581     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1582     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1583 } CYCatch(NULL) }
1584
1585 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1586     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1587 }
1588
1589 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1590     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1591     std::ostringstream str;
1592     Dl_info info;
1593     if (internal->value_ == NULL)
1594         str << "NULL";
1595     else if (dladdr(internal->value_, &info) == 0)
1596         str << internal->value_;
1597     else {
1598         str << info.dli_sname;
1599         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1600         if (offset != 0)
1601             str << "+0x" << std::hex << offset;
1602     }
1603     std::string value(str.str());
1604     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1605 } CYCatch(NULL) }
1606
1607 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1608     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1609
1610     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1611
1612     try {
1613         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1614         if (!JSValueIsUndefined(context, value)) {
1615             CYPool pool;
1616             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1617         }
1618     } catch (const CYException &e) {
1619         // XXX: it might be interesting to include this error
1620     }
1621
1622     CYLocalPool pool;
1623     std::ostringstream str;
1624
1625     sig::Pointer type(*internal->type_->type_);
1626
1627     CYOptions options;
1628     CYOutput output(*str.rdbuf(), options);
1629     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1630
1631     str << "(" << internal->value_ << ")";
1632     std::string value(str.str());
1633     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1634 } CYCatch(NULL) }
1635
1636 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1637     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1638     char *string(static_cast<char *>(internal->value_));
1639     return CYCastJSValue(context, strlen(string));
1640 } CYCatch(NULL) }
1641
1642 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1643     return CYMakeType(context, sig::String());
1644 } CYCatch(NULL) }
1645
1646 static JSValueRef CArray_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1647     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1648     sig::Array type(*internal->type_->type_, internal->length_);
1649     return CYMakeType(context, type);
1650 } CYCatch(NULL) }
1651
1652 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1653     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1654     sig::Pointer type(*internal->type_->type_);
1655     return CYMakeType(context, type);
1656 } CYCatch(NULL) }
1657
1658 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1659     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1660     const char *string(static_cast<const char *>(internal->value_));
1661     std::ostringstream str;
1662     if (string == NULL)
1663         str << "NULL";
1664     else {
1665         str << "&";
1666         CYStringify(str, string, strlen(string), true);
1667     }
1668     std::string value(str.str());
1669     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1670 } CYCatch(NULL) }
1671
1672 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1673     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1674     const char *string(static_cast<const char *>(internal->value_));
1675     return CYCastJSValue(context, string);
1676 } CYCatch(NULL) }
1677
1678 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1679     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1680     return CYMakeType(context, &internal->signature_);
1681 } CYCatch(NULL) }
1682
1683 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1684     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1685     return CYCastJSValue(context, internal->GetFFI()->alignment);
1686 } CYCatch(NULL) }
1687
1688 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1689     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1690     return CYCastJSValue(context, internal->type_->GetName());
1691 } CYCatch(NULL) }
1692
1693 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1694     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1695     return CYCastJSValue(context, internal->GetFFI()->size);
1696 } CYCatch(NULL) }
1697
1698 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1699     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1700     CYPool pool;
1701     const char *type(sig::Unparse(pool, internal->type_));
1702     return CYCastJSValue(context, CYJSString(type));
1703 } CYCatch(NULL) }
1704
1705 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1706     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1707     CYLocalPool pool;
1708     std::stringbuf out;
1709     CYOptions options;
1710     CYOutput output(out, options);
1711     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_)))->Output(output, CYNoFlags);
1712     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1713 } CYCatch(NULL) }
1714
1715 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1716     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1717 }
1718
1719 static JSStaticFunction All_staticFunctions[2] = {
1720     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1721     {NULL, NULL, 0}
1722 };
1723
1724 static JSStaticFunction CArray_staticFunctions[4] = {
1725     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1726     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1727     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1728     {NULL, NULL, 0}
1729 };
1730
1731 static JSStaticValue CArray_staticValues[2] = {
1732     {"type", &CArray_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1733     {NULL, NULL, NULL, 0}
1734 };
1735
1736 static JSStaticFunction CString_staticFunctions[6] = {
1737     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1738     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1739     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1740     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1741     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1742     {NULL, NULL, 0}
1743 };
1744
1745 static JSStaticValue CString_staticValues[3] = {
1746     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1747     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1748     {NULL, NULL, NULL, 0}
1749 };
1750
1751 static JSStaticFunction Pointer_staticFunctions[5] = {
1752     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1753     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1754     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1755     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1756     {NULL, NULL, 0}
1757 };
1758
1759 static JSStaticValue Pointer_staticValues[2] = {
1760     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1761     {NULL, NULL, NULL, 0}
1762 };
1763
1764 static JSStaticFunction Struct_staticFunctions[2] = {
1765     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1766     {NULL, NULL, 0}
1767 };
1768
1769 static JSStaticValue Struct_staticValues[2] = {
1770     {"type", &Struct_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1771     {NULL, NULL, NULL, 0}
1772 };
1773
1774 static JSStaticFunction Functor_staticFunctions[5] = {
1775     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1776     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1777     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1778     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1779     {NULL, NULL, 0}
1780 };
1781
1782 namespace cy {
1783     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1784 }
1785
1786 static JSStaticValue Functor_staticValues[2] = {
1787     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1788     {NULL, NULL, NULL, 0}
1789 };
1790
1791 namespace cy {
1792     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1793 }
1794
1795 static JSStaticValue Type_staticValues[4] = {
1796     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1797     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1798     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1799     {NULL, NULL, NULL, 0}
1800 };
1801
1802 static JSStaticFunction Type_staticFunctions[10] = {
1803     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1804     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1805     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1806     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1807     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1808     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1809     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1810     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1811     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1812     {NULL, NULL, 0}
1813 };
1814
1815 _visible void CYSetArgs(int argc, const char *argv[]) {
1816     JSContextRef context(CYGetJSContext());
1817     JSValueRef args[argc];
1818     for (int i(0); i != argc; ++i)
1819         args[i] = CYCastJSValue(context, argv[i]);
1820
1821     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1822     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1823     CYSetProperty(context, System, CYJSString("args"), array);
1824 }
1825
1826 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1827     return JSContextGetGlobalObject(context);
1828 }
1829
1830 // XXX: this is neither exceptin safe nor even terribly sane
1831 class ExecutionHandle {
1832   private:
1833     JSContextRef context_;
1834     std::vector<void *> handles_;
1835
1836   public:
1837     ExecutionHandle(JSContextRef context) :
1838         context_(context)
1839     {
1840         handles_.resize(GetHooks().size());
1841         for (size_t i(0); i != GetHooks().size(); ++i) {
1842             CYHook *hook(GetHooks()[i]);
1843             if (hook->ExecuteStart != NULL)
1844                 handles_[i] = (*hook->ExecuteStart)(context_);
1845             else
1846                 handles_[i] = NULL;
1847         }
1848     }
1849
1850     ~ExecutionHandle() {
1851         for (size_t i(GetHooks().size()); i != 0; --i) {
1852             CYHook *hook(GetHooks()[i-1]);
1853             if (hook->ExecuteEnd != NULL)
1854                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1855         }
1856     }
1857 };
1858
1859 static volatile bool cancel_;
1860
1861 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1862     return cancel_;
1863 }
1864
1865 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1866     ExecutionHandle handle(context);
1867
1868     cancel_ = false;
1869     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1870         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1871
1872     try {
1873         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1874         if (JSValueIsUndefined(context, result))
1875             return NULL;
1876
1877         std::set<void *> objects;
1878         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1879         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1880
1881         return json;
1882     } catch (const CYException &error) {
1883         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1884     }
1885 }
1886
1887 _visible void CYCancel() {
1888     cancel_ = true;
1889 }
1890
1891 static const char *CYPoolLibraryPath(CYPool &pool);
1892
1893 static bool initialized_ = false;
1894
1895 void CYInitializeDynamic() {
1896     if (!initialized_)
1897         initialized_ = true;
1898     else return;
1899
1900     CYPool pool;
1901     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1902     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1903
1904     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1905     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1906
1907     JSClassDefinition definition;
1908
1909     definition = kJSClassDefinitionEmpty;
1910     definition.className = "All";
1911     definition.staticFunctions = All_staticFunctions;
1912     definition.hasProperty = &All_hasProperty;
1913     definition.getProperty = &All_getProperty;
1914     definition.getPropertyNames = &All_getPropertyNames;
1915     All_ = JSClassCreate(&definition);
1916
1917     definition = kJSClassDefinitionEmpty;
1918     definition.className = "Context";
1919     definition.finalize = &CYFinalize;
1920     Context_ = JSClassCreate(&definition);
1921
1922     definition = kJSClassDefinitionEmpty;
1923     definition.className = "CArray";
1924     definition.staticFunctions = CArray_staticFunctions;
1925     definition.staticValues = CArray_staticValues;
1926     definition.getProperty = &CArray_getProperty;
1927     definition.setProperty = &CArray_setProperty;
1928     definition.finalize = &CYFinalize;
1929     CArray_ = JSClassCreate(&definition);
1930
1931     definition = kJSClassDefinitionEmpty;
1932     definition.className = "CString";
1933     definition.staticFunctions = CString_staticFunctions;
1934     definition.staticValues = CString_staticValues;
1935     definition.getProperty = &CString_getProperty;
1936     definition.setProperty = &CString_setProperty;
1937     definition.finalize = &CYFinalize;
1938     CString_ = JSClassCreate(&definition);
1939
1940     definition = kJSClassDefinitionEmpty;
1941     definition.className = "Functor";
1942     definition.staticFunctions = cy::Functor::StaticFunctions;
1943     definition.staticValues = Functor_staticValues;
1944     definition.callAsFunction = &Functor_callAsFunction;
1945     definition.finalize = &CYFinalize;
1946     Functor_ = JSClassCreate(&definition);
1947
1948     definition = kJSClassDefinitionEmpty;
1949     definition.className = "Pointer";
1950     definition.staticFunctions = Pointer_staticFunctions;
1951     definition.staticValues = Pointer_staticValues;
1952     definition.callAsFunction = &Pointer_callAsFunction;
1953     definition.getProperty = &Pointer_getProperty;
1954     definition.setProperty = &Pointer_setProperty;
1955     definition.finalize = &CYFinalize;
1956     Pointer_ = JSClassCreate(&definition);
1957
1958     definition = kJSClassDefinitionEmpty;
1959     definition.className = "Struct";
1960     definition.staticFunctions = Struct_staticFunctions;
1961     definition.staticValues = Struct_staticValues;
1962     definition.getProperty = &Struct_getProperty;
1963     definition.setProperty = &Struct_setProperty;
1964     definition.getPropertyNames = &Struct_getPropertyNames;
1965     definition.finalize = &CYFinalize;
1966     Struct_ = JSClassCreate(&definition);
1967
1968     definition = kJSClassDefinitionEmpty;
1969     definition.className = "Type";
1970     definition.staticValues = Type_staticValues;
1971     definition.staticFunctions = Type_staticFunctions;
1972     definition.callAsFunction = &Type_callAsFunction;
1973     definition.callAsConstructor = &Type_callAsConstructor;
1974     definition.finalize = &CYFinalize;
1975     Type_privateData::Class_ = JSClassCreate(&definition);
1976
1977     definition = kJSClassDefinitionEmpty;
1978     definition.className = "Global";
1979     //definition.getProperty = &Global_getProperty;
1980     Global_ = JSClassCreate(&definition);
1981
1982     Array_s = JSStringCreateWithUTF8CString("Array");
1983     cy_s = JSStringCreateWithUTF8CString("$cy");
1984     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1985     length_s = JSStringCreateWithUTF8CString("length");
1986     message_s = JSStringCreateWithUTF8CString("message");
1987     name_s = JSStringCreateWithUTF8CString("name");
1988     pop_s = JSStringCreateWithUTF8CString("pop");
1989     prototype_s = JSStringCreateWithUTF8CString("prototype");
1990     push_s = JSStringCreateWithUTF8CString("push");
1991     splice_s = JSStringCreateWithUTF8CString("splice");
1992     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1993     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1994     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1995     toString_s = JSStringCreateWithUTF8CString("toString");
1996     weak_s = JSStringCreateWithUTF8CString("weak");
1997
1998     Result_ = JSStringCreateWithUTF8CString("_");
1999
2000     for (CYHook *hook : GetHooks())
2001         if (hook->Initialize != NULL)
2002             (*hook->Initialize)();
2003 }
2004
2005 void CYThrow(JSContextRef context, JSValueRef value) {
2006     if (value != NULL)
2007         throw CYJSError(context, value);
2008 }
2009
2010 const char *CYJSError::PoolCString(CYPool &pool) const {
2011     std::set<void *> objects;
2012     // XXX: this used to be CYPoolCString
2013     return CYPoolCCYON(pool, context_, value_, objects);
2014 }
2015
2016 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2017     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2018     return value_;
2019 }
2020
2021 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2022     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2023     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2024     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2025 }
2026
2027 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2028     return CYCastJSError(context, name, message_);
2029 }
2030
2031 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2032     _assert(context != NULL);
2033
2034     CYPool pool;
2035
2036     va_list args;
2037     va_start(args, format);
2038     // XXX: there might be a beter way to think about this
2039     const char *message(pool.vsprintf(64, format, args));
2040     va_end(args);
2041
2042     value_ = CYCastJSError(context, "Error", message);
2043 }
2044
2045 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2046     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2047 }
2048
2049 static const char *CYPoolLibraryPath(CYPool &pool) {
2050     Dl_info addr;
2051     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2052     char *lib(pool.strdup(addr.dli_fname));
2053
2054     char *slash(strrchr(lib, '/'));
2055     _assert(slash != NULL);
2056     *slash = '\0';
2057
2058     slash = strrchr(lib, '/');
2059     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2060         *slash = '\0';
2061
2062     return lib;
2063 }
2064
2065 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2066     _assert(count == 1);
2067     CYPool pool;
2068
2069     const char *name(CYPoolCString(pool, context, arguments[0]));
2070     if (strchr(name, '/') == NULL && (
2071 #ifdef __APPLE__
2072         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2073         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2074 #endif
2075     false))
2076         return CYJSUndefined(context);
2077
2078     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2079     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2080
2081     CYJSString property("exports");
2082
2083     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2084     JSValueRef cache(CYGetProperty(context, modules, path));
2085
2086     JSValueRef result;
2087     if (!JSValueIsUndefined(context, cache)) {
2088         JSObjectRef module(CYCastJSObject(context, cache));
2089         result = CYGetProperty(context, module, property);
2090     } else {
2091         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2092         _assert(code.data != NULL);
2093
2094         size_t length(strlen(name));
2095         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2096             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2097             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2098             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2099             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2100         } else {
2101             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2102             CYSetProperty(context, modules, path, module);
2103
2104             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2105             CYSetProperty(context, module, property, exports);
2106
2107             std::stringstream wrap;
2108             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2109             code = CYPoolCode(pool, *wrap.rdbuf());
2110
2111             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2112             JSObjectRef function(CYCastJSObject(context, value));
2113
2114             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2115             CYCallAsFunction(context, function, NULL, 4, arguments);
2116             result = CYGetProperty(context, module, property);
2117         }
2118     }
2119
2120     return result;
2121 } CYCatch(NULL) }
2122
2123 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2124     CYPool pool;
2125     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2126     if (code.data == NULL)
2127         return false;
2128
2129     code = CYPoolCode(pool, code);
2130     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2131     return true;
2132 }
2133
2134 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2135 }
2136
2137 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2138     CYInitializeDynamic();
2139
2140     JSObjectRef global(CYGetGlobalObject(context));
2141
2142     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2143     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2144
2145 /* Cache Globals {{{ */
2146     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2147     CYSetProperty(context, cy, CYJSString("Array"), Array);
2148
2149     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2150     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2151
2152     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2153     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2154
2155     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2156     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2157
2158     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2159     CYSetProperty(context, cy, CYJSString("Error"), Error);
2160
2161     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2162     CYSetProperty(context, cy, CYJSString("Function"), Function);
2163
2164     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2165     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2166
2167     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2168     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2169
2170     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2171     CYSetProperty(context, cy, CYJSString("Number"), Number);
2172
2173     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2174     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2175
2176     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2177     CYSetProperty(context, cy, CYJSString("Object"), Object);
2178
2179     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2180     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2181
2182     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2183     CYSetProperty(context, cy, CYJSString("String"), String);
2184
2185     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2186     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2187
2188     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2189     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2190 /* }}} */
2191
2192     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2193     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2194
2195     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2196     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2197     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2198     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2199
2200     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray_, &CArray_new));
2201     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2202     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2203
2204     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2205     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2206     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2207
2208     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2209     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2210     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2211
2212     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2213     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2214
2215     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2216     CYSetProperty(context, cy, CYJSString("modules"), modules);
2217
2218     JSObjectRef all(JSObjectMake(context, All_, NULL));
2219     CYSetProperty(context, cycript, CYJSString("all"), all);
2220
2221     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2222     CYSetProperty(context, cy, CYJSString("cache"), cache);
2223     CYSetPrototype(context, cache, all);
2224
2225     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2226     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2227
2228     if (true) {
2229         JSObjectRef last(NULL), curr(global);
2230
2231         goto next; for (JSValueRef next;;) {
2232             if (JSValueIsNull(context, next))
2233                 break;
2234             last = curr;
2235             curr = CYCastJSObject(context, next);
2236           next:
2237             next = JSObjectGetPrototype(context, curr);
2238         }
2239
2240         CYSetPrototype(context, last, cache);
2241     }
2242
2243     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2244     CYSetProperty(context, cy, CYJSString("System"), System);
2245
2246     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2247
2248     CYSetProperty(context, global, CYJSString("system"), System);
2249     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2250     CYSetProperty(context, System, CYJSString("print"), &System_print);
2251
2252     CYSetProperty(context, global, CYJSString("global"), global);
2253
2254 #ifdef __APPLE__
2255     if (&JSWeakObjectMapCreate != NULL) {
2256         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2257         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2258     }
2259 #endif
2260
2261     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2262     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2263     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2264
2265     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2266
2267     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2268     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2269     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2270     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2271
2272     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2273     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2274     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2275     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2276
2277     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2278     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2279     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2280     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2281
2282     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2283     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2284
2285     for (CYHook *hook : GetHooks())
2286         if (hook->SetupContext != NULL)
2287             (*hook->SetupContext)(context);
2288
2289     CYArrayPush(context, alls, cycript);
2290
2291     CYRunScript(context, "/libcycript.cy");
2292 }
2293
2294 static JSGlobalContextRef context_;
2295
2296 _visible JSGlobalContextRef CYGetJSContext() {
2297     CYInitializeDynamic();
2298
2299     if (context_ == NULL) {
2300         context_ = JSGlobalContextCreate(Global_);
2301         CYSetupContext(context_);
2302     }
2303
2304     return context_;
2305 }
2306
2307 _visible void CYDestroyContext() {
2308     if (context_ == NULL)
2309         return;
2310     JSGlobalContextRelease(context_);
2311     context_ = NULL;
2312 }