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 JSClassRef Functor_;
 172 static JSClassRef Global_;
 173
 174 JSStringRef Array_s;
 175 JSStringRef cy_s;
 176 JSStringRef cyi_s;
 177 JSStringRef cyt_s;
 178 JSStringRef length_s;
 179 JSStringRef message_s;
 180 JSStringRef name_s;
 181 JSStringRef pop_s;
 182 JSStringRef prototype_s;
 183 JSStringRef push_s;
 184 JSStringRef splice_s;
 185 JSStringRef toCYON_s;
 186 JSStringRef toJSON_s;
 187 JSStringRef toPointer_s;
 188 JSStringRef toString_s;
 189 JSStringRef weak_s;
 190
 191 static sqlite3 *database_;
 192
 193 static JSStringRef Result_;
 194
 195 void CYFinalize(JSObjectRef object) {
 196     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 197     _assert(internal->count_ != _not(unsigned));
 198     if (--internal->count_ == 0)
 199         delete internal;
 200 }
 201
 202 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 203     //_assert(false);
 204     return aggregate;
 205 }
 206
 207 JSClassRef Type_privateData::Class_;
 208
 209 struct Context :
 210     CYData
 211 {
 212     JSGlobalContextRef context_;
 213
 214     Context(JSGlobalContextRef context) :
 215         context_(context)
 216     {
 217     }
 218 };
 219
 220 struct CArray :
 221     CYValue_<CArray, void *>
 222 {
 223     CYProtect owner_;
 224     Type_privateData *type_;
 225     size_t length_;
 226
 227     CArray(void *value, size_t length, const sig::Type &type, ffi_type *ffi, JSContextRef context, JSObjectRef owner) :
 228         CYValue_(value),
 229         owner_(context, owner),
 230         type_(new(*pool_) Type_privateData(type, ffi)),
 231         length_(length)
 232     {
 233         if (owner == NULL) {
 234             size_t size(ffi->size * length);
 235             void *copy(pool_->malloc<void>(size, ffi->alignment));
 236             memcpy(copy, GetValue(), size);
 237             value_ = copy;
 238         }
 239     }
 240 };
 241
 242 struct CString :
 243     CYValue_<CString, char *>
 244 {
 245     CYProtect owner_;
 246
 247     CString(char *value, JSContextRef context, JSObjectRef owner) :
 248         CYValue_(value),
 249         owner_(context, owner)
 250     {
 251         if (owner == NULL)
 252             value_ = pool_->strdup(GetValue());
 253     }
 254 };
 255
 256 struct Pointer :
 257     CYValue_<Pointer, void *>
 258 {
 259     CYProtect owner_;
 260     Type_privateData *type_;
 261
 262     Pointer(void *value, const sig::Type &type, JSContextRef context, JSObjectRef owner) :
 263         CYValue_(value),
 264         owner_(context, owner),
 265         type_(new(*pool_) Type_privateData(type))
 266     {
 267     }
 268
 269     Pointer(void *value, const char *encoding, JSContextRef context, JSObjectRef owner) :
 270         CYValue_(value),
 271         owner_(context, owner),
 272         type_(new(*pool_) Type_privateData(encoding))
 273     {
 274     }
 275 };
 276
 277 struct Struct_privateData :
 278     CYValue_<Struct_privateData, void *>
 279 {
 280     CYProtect owner_;
 281     Type_privateData *type_;
 282
 283     Struct_privateData(void *value, const sig::Type &type, ffi_type *ffi, JSContextRef context, JSObjectRef owner) :
 284         CYValue_(value),
 285         owner_(context, owner),
 286         type_(new(*pool_) Type_privateData(type, ffi))
 287     {
 288         if (owner == NULL) {
 289             size_t size(ffi->size);
 290             void *copy(pool_->malloc<void>(size, ffi->alignment));
 291             memcpy(copy, GetValue(), size);
 292             value_ = copy;
 293         }
 294     }
 295 };
 296
 297 static void *CYCastSymbol(const char *name) {
 298     for (CYHook *hook : GetHooks())
 299         if (hook->CastSymbol != NULL)
 300             if (void *value = (*hook->CastSymbol)(name))
 301                 return value;
 302     return dlsym(RTLD_DEFAULT, name);
 303 }
 304
 305 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 306     return JSValueMakeBoolean(context, value);
 307 }
 308
 309 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 310     return JSValueMakeNumber(context, value);
 311 }
 312
 313 #define CYCastJSValue_(Type_) \
 314     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 315         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 316         return JSValueMakeNumber(context, static_cast<double>(value)); \
 317     }
 318
 319 CYCastJSValue_(signed short int)
 320 CYCastJSValue_(unsigned short int)
 321 CYCastJSValue_(signed int)
 322 CYCastJSValue_(unsigned int)
 323 CYCastJSValue_(signed long int)
 324 CYCastJSValue_(unsigned long int)
 325 CYCastJSValue_(signed long long int)
 326 CYCastJSValue_(unsigned long long int)
 327
 328 JSValueRef CYJSUndefined(JSContextRef context) {
 329     return JSValueMakeUndefined(context);
 330 }
 331
 332 double CYCastDouble(JSContextRef context, JSValueRef value) {
 333     return _jsccall(JSValueToNumber, context, value);
 334 }
 335
 336 bool CYCastBool(JSContextRef context, JSValueRef value) {
 337     return JSValueToBoolean(context, value);
 338 }
 339
 340 JSValueRef CYJSNull(JSContextRef context) {
 341     return JSValueMakeNull(context);
 342 }
 343
 344 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 345     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 346 }
 347
 348 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 349     return CYCastJSValue(context, CYJSString(value));
 350 }
 351
 352 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 353     return _jsccall(JSValueToObject, context, value);
 354 }
 355
 356 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 357     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 358 }
 359
 360 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 361     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 362 }
 363
 364 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 365     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 366 }
 367
 368 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 369     return JSValueIsStrictEqual(context, lhs, rhs);
 370 }
 371
 372 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 373     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 374 }
 375
 376 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 377     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 378 }
 379
 380 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 381     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 382     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 383 }
 384
 385 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 386     return CYArrayPush(context, array, 1, &value);
 387 }
 388
 389 template <size_t Size_>
 390 class CYArrayBuilder {
 391   private:
 392     JSContextRef context_;
 393     JSObjectRef &array_;
 394     size_t size_;
 395     JSValueRef values_[Size_];
 396
 397     void flush() {
 398         if (array_ == NULL)
 399             array_ = CYObjectMakeArray(context_, size_, values_);
 400         else
 401             CYArrayPush(context_, array_, size_, values_);
 402     }
 403
 404   public:
 405     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 406         context_(context),
 407         array_(array),
 408         size_(0)
 409     {
 410     }
 411
 412     ~CYArrayBuilder() {
 413         flush();
 414     }
 415
 416     void operator ()(JSValueRef value) {
 417         if (size_ == Size_) {
 418             flush();
 419             size_ = 0;
 420         }
 421
 422         values_[size_++] = value;
 423     }
 424 };
 425
 426 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 427     FILE *file(stdout);
 428
 429     if (count == 0)
 430         fputc('\n', file);
 431     else {
 432         CYPool pool;
 433         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 434         fwrite(string.data, string.size, 1, file);
 435     }
 436
 437     fflush(file);
 438     return CYJSUndefined(context);
 439 } CYCatch(NULL) }
 440
 441 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 442
 443 _visible void CYGarbageCollect(JSContextRef context) {
 444     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 445 }
 446
 447 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 448     CYPool pool;
 449     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 450     std::stringbuf value(std::string(before.data, before.size));
 451     CYUTF8String after(CYPoolCode(pool, value));
 452     return CYCastJSValue(context, CYJSString(after));
 453 } CYCatch_(NULL, "SyntaxError") }
 454
 455 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 456     CYGarbageCollect(context);
 457     return CYJSUndefined(context);
 458 } CYCatch(NULL) }
 459
 460 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 461     switch (JSType type = JSValueGetType(context, value)) {
 462         case kJSTypeUndefined:
 463             return "undefined";
 464         case kJSTypeNull:
 465             return "null";
 466         case kJSTypeBoolean:
 467             return CYCastBool(context, value) ? "true" : "false";
 468
 469         case kJSTypeNumber: {
 470             std::ostringstream str;
 471             CYNumerify(str, CYCastDouble(context, value));
 472             std::string value(str.str());
 473             return pool.strmemdup(value.c_str(), value.size());
 474         } break;
 475
 476         case kJSTypeString: {
 477             std::ostringstream str;
 478             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 479             CYStringify(str, string.data, string.size);
 480             std::string value(str.str());
 481             return pool.strmemdup(value.c_str(), value.size());
 482         } break;
 483
 484         case kJSTypeObject:
 485             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 486         default:
 487             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 488     }
 489 } CYCatch(NULL) }
 490
 491 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 492     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 493 }
 494
 495 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 496     if (objects != NULL)
 497         return CYPoolCCYON(pool, context, value, *objects);
 498     else {
 499         std::set<void *> objects;
 500         return CYPoolCCYON(pool, context, value, objects);
 501     }
 502 }
 503
 504 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 505     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 506     if (CYIsCallable(context, toCYON)) {
 507         // XXX: this needs to be abstracted behind some kind of function
 508         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 509         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 510         _assert(value != NULL);
 511         return CYPoolCString(pool, context, value);
 512     }
 513
 514     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 515     if (CYIsCallable(context, toJSON)) {
 516         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 517         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 518     }
 519
 520     if (JSObjectIsFunction(context, object)) {
 521         JSValueRef toString(CYGetProperty(context, object, toString_s));
 522         if (CYIsCallable(context, toString)) {
 523             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 524             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 525             _assert(value != NULL);
 526             return CYPoolCString(pool, context, value);
 527         }
 528     }
 529
 530     _assert(objects.insert(object).second);
 531
 532     std::ostringstream str;
 533
 534     str << '{';
 535
 536     // XXX: this is, sadly, going to leak
 537     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 538
 539     bool comma(false);
 540
 541     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 542         if (comma)
 543             str << ',';
 544         else
 545             comma = true;
 546
 547         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 548         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 549
 550         if (CYIsKey(string))
 551             str << string.data;
 552         else
 553             CYStringify(str, string.data, string.size);
 554
 555         str << ':';
 556
 557         try {
 558             JSValueRef value(CYGetProperty(context, object, name));
 559             str << CYPoolCCYON(pool, context, value, objects);
 560         } catch (const CYException &error) {
 561             str << "@error";
 562         }
 563     }
 564
 565     JSPropertyNameArrayRelease(names);
 566
 567     str << '}';
 568
 569     std::string string(str.str());
 570     return pool.strmemdup(string.c_str(), string.size());
 571 }
 572
 573 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 574     if (count == 0)
 575         return NULL;
 576     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 577 }
 578
 579 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 580     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 581     // XXX: this is horribly inefficient
 582     std::set<void *> backup;
 583     if (objects == NULL)
 584         objects = &backup;
 585
 586     CYPool pool;
 587     std::ostringstream str;
 588
 589     str << '[';
 590
 591     JSValueRef length(CYGetProperty(context, _this, length_s));
 592     bool comma(false);
 593
 594     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 595         if (comma)
 596             str << ',';
 597         else
 598             comma = true;
 599
 600         try {
 601             JSValueRef value(CYGetProperty(context, _this, index));
 602             if (!JSValueIsUndefined(context, value))
 603                 str << CYPoolCCYON(pool, context, value, *objects);
 604             else {
 605                 str << ',';
 606                 comma = false;
 607             }
 608         } catch (const CYException &error) {
 609             str << "@error";
 610         }
 611     }
 612
 613     str << ']';
 614
 615     std::string value(str.str());
 616     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 617 } CYCatch(NULL) }
 618
 619 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 620     CYPool pool;
 621     std::ostringstream str;
 622
 623     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 624     CYStringify(str, string.data, string.size);
 625
 626     std::string value(str.str());
 627     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 628 } CYCatch(NULL) }
 629
 630 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 631     return Pointer::Make(context, pointer, type, context, owner);
 632 }
 633
 634 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), bool variadic, const sig::Signature &signature) {
 635     return JSObjectMake(context, Functor_, new cy::Functor(function, variadic, signature));
 636 }
 637
 638 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 639     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 640     if (function == NULL)
 641         return NULL;
 642
 643     cy::Functor *internal(new cy::Functor(function, encoding));
 644     ++internal->count_;
 645     return JSObjectMake(context, Functor_, internal);
 646 }
 647
 648 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 649     return CYGetOffset(CYPoolCString(pool, context, value), index);
 650 }
 651
 652 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 653     if (value == NULL)
 654         return NULL;
 655     else switch (JSValueGetType(context, value)) {
 656         case kJSTypeNull:
 657             return NULL;
 658         case kJSTypeObject: {
 659             JSObjectRef object((JSObjectRef) value);
 660             if (JSValueIsObjectOfClass(context, value, Pointer::Class_)) {
 661                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 662                 return internal->value_;
 663             }
 664             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 665             if (CYIsCallable(context, toPointer)) {
 666                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 667                 _assert(value != NULL);
 668                 return CYCastPointer_(context, value, guess);
 669             }
 670         } default:
 671             if (guess != NULL)
 672                 *guess = true;
 673         case kJSTypeNumber:
 674             double number(CYCastDouble(context, value));
 675             if (!std::isnan(number))
 676                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 677             if (guess == NULL)
 678                 throw CYJSError(context, "cannot convert value to pointer");
 679             else {
 680                 *guess = true;
 681                 return NULL;
 682             }
 683     }
 684 }
 685
 686 namespace sig {
 687
 688 // XXX: this is somehow not quite a template :/
 689
 690 template <>
 691 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 692     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 693 }
 694
 695 #define CYPoolFFI_(Type_) \
 696 template <> \
 697 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 698     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 699 }
 700
 701 CYPoolFFI_(char)
 702 CYPoolFFI_(double)
 703 CYPoolFFI_(float)
 704 CYPoolFFI_(signed char)
 705 CYPoolFFI_(signed int)
 706 CYPoolFFI_(signed long int)
 707 CYPoolFFI_(signed long long int)
 708 CYPoolFFI_(signed short int)
 709 CYPoolFFI_(unsigned char)
 710 CYPoolFFI_(unsigned int)
 711 CYPoolFFI_(unsigned long int)
 712 CYPoolFFI_(unsigned long long int)
 713 CYPoolFFI_(unsigned short int)
 714
 715 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 716     _assert(false);
 717 }
 718
 719 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 720     _assert(false);
 721 }
 722
 723 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 724     bool guess(false);
 725     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 726     if (guess && pool != NULL)
 727         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 728 }
 729
 730 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 731     _assert(false);
 732 }
 733
 734 static void CYArrayCopy(CYPool *pool, JSContextRef context, uint8_t *base, size_t length, const sig::Type &type, ffi_type *ffi, JSValueRef value, JSObjectRef object) {
 735     for (size_t index(0); index != length; ++index) {
 736         JSValueRef rhs;
 737         if (object == NULL)
 738             rhs = value;
 739         else {
 740             rhs = CYGetProperty(context, object, index);
 741             if (JSValueIsUndefined(context, rhs))
 742                 throw CYJSError(context, "unable to extract array value");
 743         }
 744
 745         type.PoolFFI(pool, context, ffi, base, rhs);
 746         base += ffi->size;
 747     }
 748 }
 749
 750 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 751     bool guess(false);
 752     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value, &guess);
 753     if (!guess || pool == NULL || !JSValueIsObject(context, value))
 754         return;
 755     JSObjectRef object(CYCastJSObject(context, value));
 756     if (CYHasProperty(context, object, length_s)) {
 757         size_t length(CYArrayLength(context, object));
 758         ffi_type *element(type.GetFFI(*pool));
 759         size_t size(element->size * length);
 760         uint8_t *base(pool->malloc<uint8_t>(size, element->alignment));
 761         CYArrayCopy(pool, context, base, length, type, element, value, object);
 762         *reinterpret_cast<void **>(data) = base;
 763     }
 764 }
 765
 766 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 767     if (size == 0)
 768         return;
 769     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 770     JSObjectRef object(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 771     CYArrayCopy(pool, context, base, size, type, ffi->elements[0], value, object);
 772 }
 773
 774 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 775     _assert(!overlap);
 776
 777     size_t offset(0);
 778     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 779     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 780     for (size_t index(0); index != signature.count; ++index) {
 781         sig::Element *element(&signature.elements[index]);
 782         ffi_type *field(ffi->elements[index]);
 783
 784         JSValueRef rhs;
 785         if (aggregate == NULL)
 786             rhs = value;
 787         else {
 788             rhs = CYGetProperty(context, aggregate, index);
 789             if (JSValueIsUndefined(context, rhs)) {
 790                 if (element->name != NULL)
 791                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 792                 else
 793                     goto undefined;
 794                 if (JSValueIsUndefined(context, rhs)) undefined:
 795                     throw CYJSError(context, "unable to extract structure value");
 796             }
 797         }
 798
 799         element->type->PoolFFI(pool, context, field, base + offset, rhs);
 800         offset += field->size;
 801         CYAlign(offset, field->alignment);
 802     }
 803 }
 804
 805 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 806     _assert(false);
 807 }
 808
 809 #define CYFromFFI_(Type_) \
 810 template <> \
 811 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 812     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 813 }
 814
 815 CYFromFFI_(bool)
 816 CYFromFFI_(char)
 817 CYFromFFI_(double)
 818 CYFromFFI_(float)
 819 CYFromFFI_(signed char)
 820 CYFromFFI_(signed int)
 821 CYFromFFI_(signed long int)
 822 CYFromFFI_(signed long long int)
 823 CYFromFFI_(signed short int)
 824 CYFromFFI_(unsigned char)
 825 CYFromFFI_(unsigned int)
 826 CYFromFFI_(unsigned long int)
 827 CYFromFFI_(unsigned long long int)
 828 CYFromFFI_(unsigned short int)
 829
 830 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 831     return CYJSUndefined(context);
 832 }
 833
 834 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 835     _assert(false);
 836 }
 837
 838 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 839     if (char *value = *reinterpret_cast<char **>(data))
 840         return CString::Make(context, value, context, owner);
 841     return CYJSNull(context);
 842 }
 843
 844 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 845     _assert(false);
 846 }
 847
 848 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 849     if (void *value = *reinterpret_cast<void **>(data))
 850         return CYMakePointer(context, value, type, NULL, owner);
 851     return CYJSNull(context);
 852 }
 853
 854 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 855     return CArray::Make(context, data, size, type, ffi->elements[0], context, owner);
 856 }
 857
 858 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 859     return Struct_privateData::Make(context, data, *this, ffi, context, owner);
 860 }
 861
 862 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 863     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), variadic, signature);
 864 }
 865
 866 }
 867
 868 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 869     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 870
 871     JSContextRef context(internal->function_);
 872
 873     size_t count(internal->cif_.nargs);
 874     JSValueRef values[count];
 875
 876     for (size_t index(0); index != count; ++index)
 877         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 878
 879     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 880     if (internal->cif_.rtype != &ffi_type_void)
 881         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 882 }
 883
 884 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 885     return CYCallAsFunction(context, function, NULL, count, values);
 886 }
 887
 888 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 889 static void CYFreeFunctor(void *data) {
 890     ffi_closure_free(data);
 891 }
 892 #else
 893 static void CYFreeFunctor(void *data) {
 894     _syscall(munmap(data, sizeof(ffi_closure)));
 895 }
 896 #endif
 897
 898 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 899     // XXX: in case of exceptions this will leak
 900     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 901
 902 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 903     void *executable;
 904     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 905
 906     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 907     _assert(status == FFI_OK);
 908
 909     internal->pool_->atexit(&CYFreeFunctor, writable);
 910     internal->value_ = executable;
 911 #else
 912     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 913         NULL, sizeof(ffi_closure),
 914         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 915         -1, 0
 916     )));
 917
 918     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 919     _assert(status == FFI_OK);
 920
 921     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 922
 923     internal->pool_->atexit(&CYFreeFunctor, closure);
 924     internal->value_ = closure;
 925 #endif
 926
 927     return internal;
 928 }
 929
 930 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 931     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 932     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 933     // XXX: see above notes about needing to leak
 934     JSValueProtect(CYGetJSContext(context), object);
 935     return object;
 936 }
 937
 938 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 939     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 940 }
 941
 942 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 943     return CYCastJSObject(context, CYGetCachedValue(context, name));
 944 }
 945
 946 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, bool variadic, const sig::Signature &signature) {
 947     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 948
 949     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 950     if (function) {
 951         JSObjectRef function(CYCastJSObject(context, value));
 952         return CYMakeFunctor(context, function, signature);
 953     } else {
 954         void (*function)()(CYCastPointer<void (*)()>(context, value));
 955         return CYMakeFunctor(context, function, variadic, signature);
 956     }
 957 }
 958
 959 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 960     CYPool pool;
 961     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 962
 963     ssize_t offset;
 964     if (!CYGetOffset(pool, context, property, offset))
 965         return NULL;
 966
 967     return CYCastJSValue(context, CYJSString(CYUTF8String(&internal->GetValue()[offset], 1)));
 968 } CYCatch(NULL) }
 969
 970 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 971     CYPool pool;
 972     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 973
 974     ssize_t offset;
 975     if (!CYGetOffset(pool, context, property, offset))
 976         return false;
 977
 978     const char *data(CYPoolCString(pool, context, value));
 979     internal->GetValue()[offset] = *data;
 980     return true;
 981 } CYCatch(false) }
 982
 983 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 984     Type_privateData *typical(internal->type_);
 985     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
 986     if (type == NULL)
 987         return false;
 988
 989     const char *name(CYPoolCString(pool, context, property));
 990     size_t length(strlen(name));
 991     double number(CYCastDouble(name, length));
 992
 993     size_t count(type->signature.count);
 994
 995     if (std::isnan(number)) {
 996         if (property == NULL)
 997             return false;
 998
 999         sig::Element *elements(type->signature.elements);
1000
1001         for (size_t local(0); local != count; ++local) {
1002             sig::Element *element(&elements[local]);
1003             if (element->name != NULL && strcmp(name, element->name) == 0) {
1004                 index = local;
1005                 goto base;
1006             }
1007         }
1008
1009         return false;
1010     } else {
1011         index = static_cast<ssize_t>(number);
1012         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1013             return false;
1014     }
1015
1016   base:
1017     ffi_type **elements(typical->GetFFI()->elements);
1018
1019     size_t offset(0);
1020     for (ssize_t local(0); local != index; ++local) {
1021         offset += elements[local]->size;
1022         CYAlign(offset, elements[local + 1]->alignment);
1023     }
1024
1025     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1026     return true;
1027 }
1028
1029 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1030     ssize_t offset;
1031     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1032         offset = 0;
1033     else if (!CYGetOffset(pool, context, property, offset))
1034         return NULL;
1035     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1036 }
1037
1038 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1039     ffi_type *ffi(typical->GetFFI());
1040     void *base(Offset_(pool, context, property, data, ffi));
1041     if (base == NULL)
1042         return NULL;
1043     return typical->type_->FromFFI(context, ffi, base, false, owner);
1044 }
1045
1046 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1047     ffi_type *ffi(typical->GetFFI());
1048     void *base(Offset_(pool, context, property, data, ffi));
1049     if (base == NULL)
1050         return false;
1051
1052     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1053     return true;
1054 }
1055
1056 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1057     CYPool pool;
1058     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1059     if (JSStringIsEqual(property, length_s))
1060         return CYCastJSValue(context, internal->length_);
1061     Type_privateData *typical(internal->type_);
1062     JSObjectRef owner(internal->owner_ ?: object);
1063     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1064 } CYCatch(NULL) }
1065
1066 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1067     CYPool pool;
1068     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1069     Type_privateData *typical(internal->type_);
1070     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1071 } CYCatch(false) }
1072
1073 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1074     CYPool pool;
1075     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1076
1077     Type_privateData *typical(internal->type_);
1078
1079     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1080         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1081             return NULL;
1082         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->variadic, function->signature);
1083     }
1084
1085     JSObjectRef owner(internal->owner_ ?: object);
1086     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1087 } CYCatch(NULL) }
1088
1089 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1090     CYPool pool;
1091     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1092     Type_privateData *typical(internal->type_);
1093     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1094 } CYCatch(false) }
1095
1096 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1097     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1098     Type_privateData *typical(internal->type_);
1099     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1100 } CYCatch(NULL) }
1101
1102 static JSValueRef Struct_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1103     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1104     return CYMakeType(context, *internal->type_->type_);
1105 } CYCatch(NULL) }
1106
1107 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1108     CYPool pool;
1109     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1110     Type_privateData *typical(internal->type_);
1111     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1112
1113     ssize_t index;
1114     uint8_t *base;
1115
1116     if (!Index_(pool, context, internal, property, index, base))
1117         return NULL;
1118
1119     JSObjectRef owner(internal->owner_ ?: object);
1120
1121     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1122 } CYCatch(NULL) }
1123
1124 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1125     CYPool pool;
1126     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1127     Type_privateData *typical(internal->type_);
1128     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1129
1130     ssize_t index;
1131     uint8_t *base;
1132
1133     if (!Index_(pool, context, internal, property, index, base))
1134         return false;
1135
1136     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1137     return true;
1138 } CYCatch(false) }
1139
1140 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1141     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1142     Type_privateData *typical(internal->type_);
1143     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1144
1145     if (type == NULL)
1146         return;
1147
1148     size_t count(type->signature.count);
1149     sig::Element *elements(type->signature.elements);
1150
1151     char number[32];
1152
1153     for (size_t index(0); index != count; ++index) {
1154         const char *name;
1155         name = elements[index].name;
1156
1157         if (name == NULL) {
1158             sprintf(number, "%zu", index);
1159             name = number;
1160         }
1161
1162         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1163     }
1164 }
1165
1166 static sig::Void Void_;
1167 static sig::Pointer PointerToVoid_(Void_);
1168
1169 static sig::Type *CYGetType(CYPool &pool, JSContextRef context, JSValueRef value) {
1170     if (JSValueIsNull(context, value))
1171         return &PointerToVoid_;
1172     JSObjectRef object(CYCastJSObject(context, value));
1173     JSObjectRef type(CYCastJSObject(context, CYGetProperty(context, object, cyt_s)));
1174     _assert(JSValueIsObjectOfClass(context, type, Type_privateData::Class_));
1175     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(type)));
1176     return internal->type_;
1177 }
1178
1179 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1180     ffi_call(cif, function, value, values);
1181 }
1182
1183 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, bool variadic, const sig::Signature &signature, ffi_cif *cif, void (*function)()) {
1184     size_t have(setups + count);
1185     size_t need(signature.count - 1);
1186
1187     if (have < need)
1188         throw CYJSError(context, "insufficient number of arguments to ffi function");
1189
1190     ffi_cif corrected;
1191     sig::Element *elements(signature.elements);
1192
1193     if (have > need) {
1194         if (!variadic)
1195             throw CYJSError(context, "exorbitant number of arguments to ffi function");
1196
1197         elements = new (pool) sig::Element[have + 1];
1198         memcpy(elements, signature.elements, sizeof(sig::Element) * (need + 1));
1199
1200         for (size_t index(need); index != have; ++index) {
1201             sig::Element &element(elements[index + 1]);
1202             element.name = NULL;
1203             element.offset = _not(size_t);
1204             element.type = CYGetType(pool, context, arguments[index - setups]);
1205         }
1206
1207         sig::Signature extended;
1208         extended.elements = elements;
1209         extended.count = have + 1;
1210         sig::sig_ffi_cif(pool, signature.count, extended, &corrected);
1211         cif = &corrected;
1212     }
1213
1214     void *values[have];
1215     memcpy(values, setup, sizeof(void *) * setups);
1216
1217     for (size_t index(setups); index != have; ++index) {
1218         sig::Element &element(elements[index + 1]);
1219         ffi_type *ffi(cif->arg_types[index]);
1220         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1221         element.type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1222     }
1223
1224     uint8_t value[cif->rtype->size];
1225
1226     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1227     // XXX: this only supports one hook, but it is a bad idea anyway
1228     for (CYHook *hook : GetHooks())
1229         if (hook->CallFunction != NULL)
1230             call = hook->CallFunction;
1231
1232     call(pool, context, cif, function, value, values);
1233     return signature.elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1234 }
1235
1236 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1237     CYPool pool;
1238     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1239     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, internal->variadic_, internal->signature_, &internal->cif_, internal->GetValue());
1240 } CYCatch(NULL) }
1241
1242 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1243     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1244     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1245         throw CYJSError(context, "cannot call a pointer to non-function");
1246     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1247     return CYCallAsFunction(context, functor, _this, count, arguments);
1248 } CYCatch(NULL) }
1249
1250 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1251     Type_privateData *internal(new Type_privateData(type));
1252     return JSObjectMake(context, Type_privateData::Class_, internal);
1253 }
1254
1255 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1256     sqlite3_stmt *statement;
1257
1258     _sqlcall(sqlite3_prepare(database_,
1259         "select "
1260             "\"cache\".\"code\", "
1261             "\"cache\".\"flags\" "
1262         "from \"cache\" "
1263         "where"
1264             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1265             " \"cache\".\"name\" = ?"
1266         " limit 1"
1267     , -1, &statement, NULL));
1268
1269     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1270
1271     bool success;
1272     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1273         success = false;
1274     else {
1275         success = true;
1276         code = sqlite3_column_pooled(pool, statement, 0);
1277         flags = sqlite3_column_int(statement, 1);
1278     }
1279
1280     _sqlcall(sqlite3_finalize(statement));
1281     return success;
1282 }
1283
1284 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1285     if (JSStringIsEqualToUTF8CString(property, "errno"))
1286         return true;
1287
1288     JSObjectRef global(CYGetGlobalObject(context));
1289     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1290     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1291
1292     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1293         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1294             if (CYHasProperty(context, space, property))
1295                 return true;
1296
1297     CYPool pool;
1298     const char *code;
1299     unsigned flags;
1300     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1301         return true;
1302
1303     return false;
1304 }
1305
1306 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1307     if (JSStringIsEqualToUTF8CString(property, "errno"))
1308         return CYCastJSValue(context, errno);
1309
1310     JSObjectRef global(CYGetGlobalObject(context));
1311     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1312     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1313
1314     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1315         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1316             if (JSValueRef value = CYGetProperty(context, space, property))
1317                 if (!JSValueIsUndefined(context, value))
1318                     return value;
1319
1320     CYPool pool;
1321     const char *code;
1322     unsigned flags;
1323     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1324         CYUTF8String parsed;
1325
1326         try {
1327             parsed = CYPoolCode(pool, code);
1328         } catch (const CYException &error) {
1329             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1330         }
1331
1332         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1333
1334         if (flags == 0) {
1335             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1336             CYSetProperty(context, cache, property, result);
1337         }
1338
1339         return result;
1340     }
1341
1342     return NULL;
1343 } CYCatch(NULL) }
1344
1345 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1346     _assert(count == 1);
1347     CYPool pool;
1348     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1349
1350     JSObjectRef array(NULL);
1351
1352     {
1353     CYArrayBuilder<1024> values(context, array);
1354
1355     sqlite3_stmt *statement;
1356
1357     if (prefix.size == 0)
1358         _sqlcall(sqlite3_prepare(database_,
1359             "select "
1360                 "\"cache\".\"name\" "
1361             "from \"cache\" "
1362             "where"
1363                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1364         , -1, &statement, NULL));
1365     else {
1366         _sqlcall(sqlite3_prepare(database_,
1367             "select "
1368                 "\"cache\".\"name\" "
1369             "from \"cache\" "
1370             "where"
1371                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1372                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1373         , -1, &statement, NULL));
1374
1375         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1376
1377         char *after(pool.strndup(prefix.data, prefix.size));
1378         ++after[prefix.size - 1];
1379         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1380     }
1381
1382     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1383         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1384
1385     _sqlcall(sqlite3_finalize(statement));
1386     }
1387
1388     return array;
1389 } CYCatch(NULL) }
1390
1391 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1392     JSObjectRef global(CYGetGlobalObject(context));
1393     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1394     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1395
1396     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1397         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1398             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1399             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1400                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1401             JSPropertyNameArrayRelease(subset);
1402         }
1403 }
1404
1405 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1406     _assert(false);
1407 } CYCatch(NULL) }
1408
1409 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1410     _assert(false);
1411 } CYCatch(NULL) }
1412
1413 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1414     _assert(false);
1415 } CYCatch(NULL) }
1416
1417 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1418     CYPool pool;
1419
1420     if (false) {
1421     } else if (count == 1) {
1422         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1423         sig::Signature signature;
1424         sig::Parse(pool, &signature, encoding, &Structor_);
1425         return CYMakeType(context, *signature.elements[0].type);
1426     } else if (count == 2) {
1427         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1428         size_t count(CYArrayLength(context, types));
1429
1430         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1431
1432         sig::Aggregate type(false);
1433         type.signature.elements = new(pool) sig::Element[count];
1434         type.signature.count = count;
1435
1436         for (size_t i(0); i != count; ++i) {
1437             sig::Element &element(type.signature.elements[i]);
1438             element.offset = _not(size_t);
1439
1440             JSValueRef name(CYArrayGet(context, names, i));
1441             if (JSValueIsUndefined(context, name))
1442                 element.name = NULL;
1443             else
1444                 element.name = CYPoolCString(pool, context, name);
1445
1446             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1447             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1448             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1449             element.type = internal->type_;
1450         }
1451
1452         return CYMakeType(context, type);
1453     } else {
1454         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1455     }
1456 } CYCatch(NULL) }
1457
1458 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1459     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1460
1461     CYPool pool;
1462
1463     type.signature.elements = new(pool) sig::Element[1 + count];
1464     type.signature.count = 1 + count;
1465
1466     type.signature.elements[0].name = NULL;
1467     type.signature.elements[0].type = internal->type_;
1468     type.signature.elements[0].offset = _not(size_t);
1469
1470     for (size_t i(0); i != count; ++i) {
1471         sig::Element &element(type.signature.elements[i + 1]);
1472         element.name = NULL;
1473         element.offset = _not(size_t);
1474
1475         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1476         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1477         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1478
1479         element.type = internal->type_;
1480     }
1481
1482     return CYMakeType(context, type);
1483 } CYCatch(NULL) }
1484
1485 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1486     if (count != 1)
1487         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1488     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1489
1490     CYPool pool;
1491     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1492     if (index == _not(size_t))
1493         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1494
1495     sig::Array type(*internal->type_, index);
1496     return CYMakeType(context, type);
1497 } CYCatch(NULL) }
1498
1499 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1500     sig::Block type;
1501     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1502 }
1503
1504 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1505     if (count != 0)
1506         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1507     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1508
1509     CYPool pool;
1510     sig::Type *type(internal->type_->Copy(pool));
1511     type->flags |= JOC_TYPE_CONST;
1512     return CYMakeType(context, *type);
1513 } CYCatch(NULL) }
1514
1515 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1516     bool variadic(count != 0 && JSValueIsNull(context, arguments[count - 1]));
1517     sig::Function type(variadic);
1518     return Type_callAsFunction_$With(context, object, _this, variadic ? count - 1 : count, arguments, type, exception);
1519 }
1520
1521 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1522     if (count != 0)
1523         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1524     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1525
1526     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1527         return CYMakeType(context, sig::String());
1528     else
1529         return CYMakeType(context, sig::Pointer(*internal->type_));
1530 } CYCatch(NULL) }
1531
1532 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1533     if (count != 1)
1534         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1535     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1536
1537     CYPool pool;
1538     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1539 } CYCatch(NULL) }
1540
1541 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1542     if (count != 1)
1543         throw CYJSError(context, "incorrect number of arguments to type cast function");
1544     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1545
1546     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1547         return CYMakeFunctor(context, arguments[0], function->variadic, function->signature);
1548
1549     CYPool pool;
1550     sig::Type *type(internal->type_);
1551     ffi_type *ffi(internal->GetFFI());
1552
1553     void *data(pool.malloc<void>(ffi->size, ffi->alignment));
1554     type->PoolFFI(&pool, context, ffi, data, arguments[0]);
1555     JSValueRef value(type->FromFFI(context, ffi, data));
1556
1557     if (JSValueGetType(context, value) == kJSTypeNumber) {
1558         JSObjectRef typed(_jsccall(JSObjectCallAsConstructor, context, CYGetCachedObject(context, CYJSString("Number")), 1, &value));
1559         CYSetProperty(context, typed, cyt_s, object, kJSPropertyAttributeDontEnum);
1560         value = typed;
1561     }
1562
1563     return value;
1564 } CYCatch(NULL) }
1565
1566 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1567     if (count != 0)
1568         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1569     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1570
1571     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1572     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1573     ffi_type *ffi(internal->GetFFI());
1574     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1575     memset(value->value_, 0, ffi->size);
1576     return pointer;
1577 } CYCatch(NULL) }
1578
1579 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1580     if (count != 2)
1581         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1582     CYPool pool;
1583     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1584     sig::Signature signature;
1585     sig::Parse(pool, &signature, encoding, &Structor_);
1586     return CYMakeFunctor(context, arguments[0], false, signature);
1587 } CYCatch(NULL) }
1588
1589 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1590     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1591     JSObjectRef owner(internal->owner_ ?: object);
1592     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1593 } CYCatch(NULL) }
1594
1595 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1596     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1597     JSObjectRef owner(internal->owner_ ?: object);
1598     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1599 } CYCatch(NULL) }
1600
1601 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1602     CYPool pool;
1603     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1604
1605     sig::Function type(internal->variadic_);
1606     sig::Copy(pool, type.signature, internal->signature_);
1607
1608     return CYMakePointer(context, internal->value_, type, NULL, NULL);
1609 } CYCatch(NULL) }
1610
1611 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1612     return _this;
1613 } CYCatch(NULL) }
1614
1615 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1616     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1617     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1618 } CYCatch(NULL) }
1619
1620 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1621     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1622     std::ostringstream str;
1623     Dl_info info;
1624     if (internal->value_ == NULL)
1625         str << "NULL";
1626     else if (dladdr(internal->value_, &info) == 0)
1627         str << internal->value_;
1628     else {
1629         str << info.dli_sname;
1630         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1631         if (offset != 0)
1632             str << "+0x" << std::hex << offset;
1633     }
1634     std::string value(str.str());
1635     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1636 } CYCatch(NULL) }
1637
1638 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1639     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1640
1641     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1642
1643     try {
1644         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1645         if (!JSValueIsUndefined(context, value)) {
1646             CYPool pool;
1647             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1648         }
1649     } catch (const CYException &e) {
1650         // XXX: it might be interesting to include this error
1651     }
1652
1653     CYLocalPool pool;
1654     std::ostringstream str;
1655
1656     sig::Pointer type(*internal->type_->type_);
1657
1658     CYOptions options;
1659     CYOutput output(*str.rdbuf(), options);
1660     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1661
1662     str << "(" << internal->value_ << ")";
1663     std::string value(str.str());
1664     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1665 } CYCatch(NULL) }
1666
1667 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1668     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1669     return CYCastJSValue(context, strlen(internal->GetValue()));
1670 } CYCatch(NULL) }
1671
1672 static JSValueRef CString_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1673     return CYMakeType(context, sig::String());
1674 } CYCatch(NULL) }
1675
1676 static JSValueRef CArray_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1677     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1678     sig::Array type(*internal->type_->type_, internal->length_);
1679     return CYMakeType(context, type);
1680 } CYCatch(NULL) }
1681
1682 static JSValueRef Pointer_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1683     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1684     sig::Pointer type(*internal->type_->type_);
1685     return CYMakeType(context, type);
1686 } CYCatch(NULL) }
1687
1688 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1689     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1690     const char *string(internal->GetValue());
1691     std::ostringstream str;
1692     if (string == NULL)
1693         str << "NULL";
1694     else {
1695         str << "&";
1696         CYStringify(str, string, strlen(string), true);
1697     }
1698     std::string value(str.str());
1699     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1700 } CYCatch(NULL) }
1701
1702 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1703     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1704     return CYCastJSValue(context, internal->GetValue());
1705 } CYCatch(NULL) }
1706
1707 static JSValueRef Functor_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1708     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1709     CYPool pool;
1710     sig::Function type(internal->variadic_);
1711     sig::Copy(pool, type.signature, internal->signature_);
1712     return CYMakeType(context, type);
1713 } CYCatch(NULL) }
1714
1715 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1716     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1717     return CYCastJSValue(context, internal->GetFFI()->alignment);
1718 } CYCatch(NULL) }
1719
1720 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1721     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1722     return CYCastJSValue(context, internal->type_->GetName());
1723 } CYCatch(NULL) }
1724
1725 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1726     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1727     return CYCastJSValue(context, internal->GetFFI()->size);
1728 } CYCatch(NULL) }
1729
1730 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1731     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1732     CYPool pool;
1733     const char *type(sig::Unparse(pool, internal->type_));
1734     return CYCastJSValue(context, CYJSString(type));
1735 } CYCatch(NULL) }
1736
1737 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1738     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1739     CYLocalPool pool;
1740     std::stringbuf out;
1741     CYOptions options;
1742     CYOutput output(out, options);
1743     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_)))->Output(output, CYNoFlags);
1744     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1745 } CYCatch(NULL) }
1746
1747 static JSStaticFunction All_staticFunctions[2] = {
1748     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1749     {NULL, NULL, 0}
1750 };
1751
1752 static JSStaticFunction CArray_staticFunctions[3] = {
1753     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1754     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1755     {NULL, NULL, 0}
1756 };
1757
1758 static JSStaticValue CArray_staticValues[2] = {
1759     {"$cyt", &CArray_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1760     {NULL, NULL, NULL, 0}
1761 };
1762
1763 static JSStaticFunction CString_staticFunctions[5] = {
1764     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1765     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1766     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1767     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1768     {NULL, NULL, 0}
1769 };
1770
1771 static JSStaticValue CString_staticValues[3] = {
1772     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1773     {"$cyt", &CString_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1774     {NULL, NULL, NULL, 0}
1775 };
1776
1777 static JSStaticFunction Pointer_staticFunctions[4] = {
1778     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1779     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1780     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1781     {NULL, NULL, 0}
1782 };
1783
1784 static JSStaticValue Pointer_staticValues[2] = {
1785     {"$cyt", &Pointer_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1786     {NULL, NULL, NULL, 0}
1787 };
1788
1789 static JSStaticFunction Struct_staticFunctions[2] = {
1790     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1791     {NULL, NULL, 0}
1792 };
1793
1794 static JSStaticValue Struct_staticValues[2] = {
1795     {"$cyt", &Struct_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1796     {NULL, NULL, NULL, 0}
1797 };
1798
1799 static JSStaticFunction Functor_staticFunctions[4] = {
1800     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1801     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1802     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1803     {NULL, NULL, 0}
1804 };
1805
1806 namespace cy {
1807     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1808 }
1809
1810 static JSStaticValue Functor_staticValues[2] = {
1811     {"$cyt", &Functor_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1812     {NULL, NULL, NULL, 0}
1813 };
1814
1815 namespace cy {
1816     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1817 }
1818
1819 static JSStaticValue Type_staticValues[4] = {
1820     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1821     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1822     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1823     {NULL, NULL, NULL, 0}
1824 };
1825
1826 static JSStaticFunction Type_staticFunctions[9] = {
1827     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1828     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1829     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1830     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1831     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1832     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1833     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1834     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1835     {NULL, NULL, 0}
1836 };
1837
1838 _visible void CYSetArgs(int argc, const char *argv[]) {
1839     JSContextRef context(CYGetJSContext());
1840     JSValueRef args[argc];
1841     for (int i(0); i != argc; ++i)
1842         args[i] = CYCastJSValue(context, argv[i]);
1843
1844     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1845     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1846     CYSetProperty(context, System, CYJSString("args"), array);
1847 }
1848
1849 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1850     return JSContextGetGlobalObject(context);
1851 }
1852
1853 // XXX: this is neither exceptin safe nor even terribly sane
1854 class ExecutionHandle {
1855   private:
1856     JSContextRef context_;
1857     std::vector<void *> handles_;
1858
1859   public:
1860     ExecutionHandle(JSContextRef context) :
1861         context_(context)
1862     {
1863         handles_.resize(GetHooks().size());
1864         for (size_t i(0); i != GetHooks().size(); ++i) {
1865             CYHook *hook(GetHooks()[i]);
1866             if (hook->ExecuteStart != NULL)
1867                 handles_[i] = (*hook->ExecuteStart)(context_);
1868             else
1869                 handles_[i] = NULL;
1870         }
1871     }
1872
1873     ~ExecutionHandle() {
1874         for (size_t i(GetHooks().size()); i != 0; --i) {
1875             CYHook *hook(GetHooks()[i-1]);
1876             if (hook->ExecuteEnd != NULL)
1877                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1878         }
1879     }
1880 };
1881
1882 static volatile bool cancel_;
1883
1884 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1885     return cancel_;
1886 }
1887
1888 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1889     ExecutionHandle handle(context);
1890
1891     cancel_ = false;
1892     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1893         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1894
1895     try {
1896         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1897         if (JSValueIsUndefined(context, result))
1898             return NULL;
1899
1900         std::set<void *> objects;
1901         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1902         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1903
1904         return json;
1905     } catch (const CYException &error) {
1906         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1907     }
1908 }
1909
1910 _visible void CYCancel() {
1911     cancel_ = true;
1912 }
1913
1914 static const char *CYPoolLibraryPath(CYPool &pool);
1915
1916 static bool initialized_ = false;
1917
1918 void CYInitializeDynamic() {
1919     if (!initialized_)
1920         initialized_ = true;
1921     else return;
1922
1923     CYPool pool;
1924     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1925     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1926
1927     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1928     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1929
1930     JSClassDefinition definition;
1931
1932     definition = kJSClassDefinitionEmpty;
1933     definition.className = "All";
1934     definition.staticFunctions = All_staticFunctions;
1935     definition.hasProperty = &All_hasProperty;
1936     definition.getProperty = &All_getProperty;
1937     definition.getPropertyNames = &All_getPropertyNames;
1938     All_ = JSClassCreate(&definition);
1939
1940     definition = kJSClassDefinitionEmpty;
1941     definition.className = "Context";
1942     definition.finalize = &CYFinalize;
1943     Context_ = JSClassCreate(&definition);
1944
1945     definition = kJSClassDefinitionEmpty;
1946     definition.className = "CArray";
1947     definition.staticFunctions = CArray_staticFunctions;
1948     definition.staticValues = CArray_staticValues;
1949     definition.getProperty = &CArray_getProperty;
1950     definition.setProperty = &CArray_setProperty;
1951     definition.finalize = &CYFinalize;
1952     CArray::Class_ = JSClassCreate(&definition);
1953
1954     definition = kJSClassDefinitionEmpty;
1955     definition.className = "CString";
1956     definition.staticFunctions = CString_staticFunctions;
1957     definition.staticValues = CString_staticValues;
1958     definition.getProperty = &CString_getProperty;
1959     definition.setProperty = &CString_setProperty;
1960     definition.finalize = &CYFinalize;
1961     CString::Class_ = JSClassCreate(&definition);
1962
1963     definition = kJSClassDefinitionEmpty;
1964     definition.className = "Functor";
1965     definition.staticFunctions = cy::Functor::StaticFunctions;
1966     definition.staticValues = Functor_staticValues;
1967     definition.callAsFunction = &Functor_callAsFunction;
1968     definition.finalize = &CYFinalize;
1969     Functor_ = JSClassCreate(&definition);
1970
1971     definition = kJSClassDefinitionEmpty;
1972     definition.className = "Pointer";
1973     definition.staticFunctions = Pointer_staticFunctions;
1974     definition.staticValues = Pointer_staticValues;
1975     definition.callAsFunction = &Pointer_callAsFunction;
1976     definition.getProperty = &Pointer_getProperty;
1977     definition.setProperty = &Pointer_setProperty;
1978     definition.finalize = &CYFinalize;
1979     Pointer::Class_ = JSClassCreate(&definition);
1980
1981     definition = kJSClassDefinitionEmpty;
1982     definition.className = "Struct";
1983     definition.staticFunctions = Struct_staticFunctions;
1984     definition.staticValues = Struct_staticValues;
1985     definition.getProperty = &Struct_getProperty;
1986     definition.setProperty = &Struct_setProperty;
1987     definition.getPropertyNames = &Struct_getPropertyNames;
1988     definition.finalize = &CYFinalize;
1989     Struct_privateData::Class_ = JSClassCreate(&definition);
1990
1991     definition = kJSClassDefinitionEmpty;
1992     definition.className = "Type";
1993     definition.staticValues = Type_staticValues;
1994     definition.staticFunctions = Type_staticFunctions;
1995     definition.callAsFunction = &Type_callAsFunction;
1996     definition.callAsConstructor = &Type_callAsConstructor;
1997     definition.finalize = &CYFinalize;
1998     Type_privateData::Class_ = JSClassCreate(&definition);
1999
2000     definition = kJSClassDefinitionEmpty;
2001     definition.className = "Global";
2002     //definition.getProperty = &Global_getProperty;
2003     Global_ = JSClassCreate(&definition);
2004
2005     Array_s = JSStringCreateWithUTF8CString("Array");
2006     cy_s = JSStringCreateWithUTF8CString("$cy");
2007     cyi_s = JSStringCreateWithUTF8CString("$cyi");
2008     cyt_s = JSStringCreateWithUTF8CString("$cyt");
2009     length_s = JSStringCreateWithUTF8CString("length");
2010     message_s = JSStringCreateWithUTF8CString("message");
2011     name_s = JSStringCreateWithUTF8CString("name");
2012     pop_s = JSStringCreateWithUTF8CString("pop");
2013     prototype_s = JSStringCreateWithUTF8CString("prototype");
2014     push_s = JSStringCreateWithUTF8CString("push");
2015     splice_s = JSStringCreateWithUTF8CString("splice");
2016     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2017     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2018     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2019     toString_s = JSStringCreateWithUTF8CString("toString");
2020     weak_s = JSStringCreateWithUTF8CString("weak");
2021
2022     Result_ = JSStringCreateWithUTF8CString("_");
2023
2024     for (CYHook *hook : GetHooks())
2025         if (hook->Initialize != NULL)
2026             (*hook->Initialize)();
2027 }
2028
2029 void CYThrow(JSContextRef context, JSValueRef value) {
2030     if (value != NULL)
2031         throw CYJSError(context, value);
2032 }
2033
2034 const char *CYJSError::PoolCString(CYPool &pool) const {
2035     std::set<void *> objects;
2036     // XXX: this used to be CYPoolCString
2037     return CYPoolCCYON(pool, context_, value_, objects);
2038 }
2039
2040 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2041     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2042     return value_;
2043 }
2044
2045 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2046     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2047     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2048     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2049 }
2050
2051 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2052     return CYCastJSError(context, name, message_);
2053 }
2054
2055 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2056     _assert(context != NULL);
2057
2058     CYPool pool;
2059
2060     va_list args;
2061     va_start(args, format);
2062     // XXX: there might be a beter way to think about this
2063     const char *message(pool.vsprintf(64, format, args));
2064     va_end(args);
2065
2066     value_ = CYCastJSError(context, "Error", message);
2067 }
2068
2069 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2070     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2071 }
2072
2073 static const char *CYPoolLibraryPath(CYPool &pool) {
2074     Dl_info addr;
2075     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2076     char *lib(pool.strdup(addr.dli_fname));
2077
2078     char *slash(strrchr(lib, '/'));
2079     _assert(slash != NULL);
2080     *slash = '\0';
2081
2082     slash = strrchr(lib, '/');
2083     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2084         *slash = '\0';
2085
2086     return lib;
2087 }
2088
2089 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2090     _assert(count == 1);
2091     CYPool pool;
2092
2093     const char *name(CYPoolCString(pool, context, arguments[0]));
2094     if (strchr(name, '/') == NULL && (
2095 #ifdef __APPLE__
2096         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2097         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2098 #endif
2099     false))
2100         return CYJSUndefined(context);
2101
2102     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2103     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2104
2105     CYJSString property("exports");
2106
2107     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2108     JSValueRef cache(CYGetProperty(context, modules, path));
2109
2110     JSValueRef result;
2111     if (!JSValueIsUndefined(context, cache)) {
2112         JSObjectRef module(CYCastJSObject(context, cache));
2113         result = CYGetProperty(context, module, property);
2114     } else {
2115         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2116         _assert(code.data != NULL);
2117
2118         size_t length(strlen(name));
2119         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2120             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2121             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2122             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2123             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2124         } else {
2125             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2126             CYSetProperty(context, modules, path, module);
2127
2128             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2129             CYSetProperty(context, module, property, exports);
2130
2131             std::stringstream wrap;
2132             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2133             code = CYPoolCode(pool, *wrap.rdbuf());
2134
2135             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2136             JSObjectRef function(CYCastJSObject(context, value));
2137
2138             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2139             CYCallAsFunction(context, function, NULL, 4, arguments);
2140             result = CYGetProperty(context, module, property);
2141         }
2142     }
2143
2144     return result;
2145 } CYCatch(NULL) }
2146
2147 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2148     CYPool pool;
2149     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2150     if (code.data == NULL)
2151         return false;
2152
2153     code = CYPoolCode(pool, code);
2154     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2155     return true;
2156 }
2157
2158 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2159 }
2160
2161 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2162     CYInitializeDynamic();
2163
2164     JSObjectRef global(CYGetGlobalObject(context));
2165
2166     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2167     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2168
2169 /* Cache Globals {{{ */
2170     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2171     CYSetProperty(context, cy, CYJSString("Array"), Array);
2172
2173     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2174     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2175
2176     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2177     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2178
2179     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2180     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2181
2182     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2183     CYSetProperty(context, cy, CYJSString("Error"), Error);
2184
2185     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2186     CYSetProperty(context, cy, CYJSString("Function"), Function);
2187
2188     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2189     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2190
2191     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2192     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2193
2194     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2195     CYSetProperty(context, cy, CYJSString("Number"), Number);
2196
2197     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2198     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2199
2200     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2201     CYSetProperty(context, cy, CYJSString("Object"), Object);
2202
2203     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2204     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2205
2206     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2207     CYSetProperty(context, cy, CYJSString("String"), String);
2208
2209     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2210     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2211
2212     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2213     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2214 /* }}} */
2215
2216     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2217     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2218
2219     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2220     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2221     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2222     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2223
2224     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray::Class_, &CArray_new));
2225     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2226     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2227
2228     JSObjectRef CString(JSObjectMakeConstructor(context, CString::Class_, &CString_new));
2229     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2230     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2231
2232     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2233     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2234     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2235
2236     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer::Class_, &Pointer_new));
2237     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2238
2239     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2240     CYSetProperty(context, cy, CYJSString("modules"), modules);
2241
2242     JSObjectRef all(JSObjectMake(context, All_, NULL));
2243     CYSetProperty(context, cycript, CYJSString("all"), all);
2244
2245     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2246     CYSetProperty(context, cy, CYJSString("cache"), cache);
2247     CYSetPrototype(context, cache, all);
2248
2249     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2250     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2251
2252     if (true) {
2253         JSObjectRef last(NULL), curr(global);
2254
2255         goto next; for (JSValueRef next;;) {
2256             if (JSValueIsNull(context, next))
2257                 break;
2258             last = curr;
2259             curr = CYCastJSObject(context, next);
2260           next:
2261             next = JSObjectGetPrototype(context, curr);
2262         }
2263
2264         CYSetPrototype(context, last, cache);
2265     }
2266
2267     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2268     CYSetProperty(context, cy, CYJSString("System"), System);
2269
2270     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2271
2272     CYSetProperty(context, global, CYJSString("system"), System);
2273     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2274     CYSetProperty(context, System, CYJSString("print"), &System_print);
2275
2276     CYSetProperty(context, global, CYJSString("global"), global);
2277
2278 #ifdef __APPLE__
2279     if (&JSWeakObjectMapCreate != NULL) {
2280         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2281         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2282     }
2283 #endif
2284
2285     CYSetProperty(context, String_prototype, cyt_s, CYMakeType(context, sig::String()), kJSPropertyAttributeDontEnum);
2286
2287     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2288     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2289     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2290
2291     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2292
2293     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2294     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2295     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2296     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2297
2298     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2299     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2300     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2301     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2302
2303     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2304     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2305     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2306     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2307
2308     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2309     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2310
2311     for (CYHook *hook : GetHooks())
2312         if (hook->SetupContext != NULL)
2313             (*hook->SetupContext)(context);
2314
2315     CYArrayPush(context, alls, cycript);
2316
2317     CYRunScript(context, "/libcycript.cy");
2318 }
2319
2320 static JSGlobalContextRef context_;
2321
2322 _visible JSGlobalContextRef CYGetJSContext() {
2323     CYInitializeDynamic();
2324
2325     if (context_ == NULL) {
2326         context_ = JSGlobalContextCreate(Global_);
2327         CYSetupContext(context_);
2328     }
2329
2330     return context_;
2331 }
2332
2333 _visible void CYDestroyContext() {
2334     if (context_ == NULL)
2335         return;
2336     JSGlobalContextRelease(context_);
2337     context_ = NULL;
2338 }