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(pool.memdup(value.data, value.size));
 115     } else if (value.data[value.size] != '\0') {
 116         CYPool pool;
 117         return CYCopyJSString(CYPoolUTF16String(pool, value));
 118     } else {
 119         return CYCopyJSString(value.data);
 120     }
 121 }
 122
 123 JSStringRef CYCopyJSString(CYUTF16String value) {
 124     return JSStringCreateWithCharacters(value.data, value.size);
 125 }
 126
 127 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 128     if (JSValueIsNull(context, value))
 129         return NULL;
 130     return _jsccall(JSValueToStringCopy, context, value);
 131 }
 132
 133 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 134     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 135 }
 136
 137 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 138     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 139 }
 140
 141 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 142     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 143     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 144     return utf8.data;
 145 }
 146
 147 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 148     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 149 }
 150 /* }}} */
 151 /* Index Offsets {{{ */
 152 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 153     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 154 }
 155 /* }}} */
 156
 157 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 158
 159 static JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 160     if (JSObjectMakeArray$ != NULL)
 161         return _jsccall(*JSObjectMakeArray$, context, length, values);
 162     else {
 163         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 164         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 165         return CYCastJSObject(context, value);
 166     }
 167 }
 168
 169 static JSClassRef All_;
 170 static JSClassRef Context_;
 171 static JSClassRef CString_;
 172 JSClassRef Functor_;
 173 static JSClassRef Global_;
 174 static JSClassRef Pointer_;
 175 static JSClassRef Struct_;
 176
 177 JSStringRef Array_s;
 178 JSStringRef cy_s;
 179 JSStringRef cyi_s;
 180 JSStringRef length_s;
 181 JSStringRef message_s;
 182 JSStringRef name_s;
 183 JSStringRef pop_s;
 184 JSStringRef prototype_s;
 185 JSStringRef push_s;
 186 JSStringRef splice_s;
 187 JSStringRef toCYON_s;
 188 JSStringRef toJSON_s;
 189 JSStringRef toPointer_s;
 190 JSStringRef toString_s;
 191 JSStringRef weak_s;
 192
 193 static sqlite3 *database_;
 194
 195 static JSStringRef Result_;
 196
 197 void CYFinalize(JSObjectRef object) {
 198     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 199     _assert(internal->count_ != _not(unsigned));
 200     if (--internal->count_ == 0)
 201         delete internal;
 202 }
 203
 204 void Structor_(CYPool &pool, sig::Type *&type) {
 205     if (
 206         type->primitive == sig::pointer_P &&
 207         type->data.data.type->primitive == sig::struct_P &&
 208         type->data.data.type->name != NULL &&
 209         strcmp(type->data.data.type->name, "_objc_class") == 0
 210     ) {
 211         type->primitive = sig::typename_P;
 212         type->data.data.type = NULL;
 213         return;
 214     }
 215
 216     if (type->primitive != sig::struct_P || type->name == NULL)
 217         return;
 218
 219     //_assert(false);
 220 }
 221
 222 JSClassRef Type_privateData::Class_;
 223
 224 struct Context :
 225     CYData
 226 {
 227     JSGlobalContextRef context_;
 228
 229     Context(JSGlobalContextRef context) :
 230         context_(context)
 231     {
 232     }
 233 };
 234
 235 struct CString :
 236     CYOwned
 237 {
 238     CString(char *value, JSContextRef context, JSObjectRef owner) :
 239         CYOwned(value, context, owner)
 240     {
 241     }
 242 };
 243
 244 struct Pointer :
 245     CYOwned
 246 {
 247     Type_privateData *type_;
 248     size_t length_;
 249
 250     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 251         CYOwned(value, context, owner),
 252         type_(new(*pool_) Type_privateData(type)),
 253         length_(length)
 254     {
 255     }
 256
 257     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, const char *encoding) :
 258         CYOwned(value, context, owner),
 259         type_(new(*pool_) Type_privateData(encoding)),
 260         length_(length)
 261     {
 262     }
 263 };
 264
 265 struct Struct_privateData :
 266     CYOwned
 267 {
 268     Type_privateData *type_;
 269
 270     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 271         CYOwned(NULL, context, owner)
 272     {
 273     }
 274 };
 275
 276 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 277     Struct_privateData *internal(new Struct_privateData(context, owner));
 278     CYPool &pool(*internal->pool_);
 279     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 280     internal->type_ = typical;
 281
 282     if (owner != NULL)
 283         internal->value_ = data;
 284     else {
 285         size_t size(typical->GetFFI()->size);
 286         void *copy(internal->pool_->malloc<void>(size));
 287         memcpy(copy, data, size);
 288         internal->value_ = copy;
 289     }
 290
 291     return JSObjectMake(context, Struct_, internal);
 292 }
 293
 294 static void *CYCastSymbol(const char *name) {
 295     for (CYHook *hook : GetHooks())
 296         if (hook->CastSymbol != NULL)
 297             if (void *value = (*hook->CastSymbol)(name))
 298                 return value;
 299     return dlsym(RTLD_DEFAULT, name);
 300 }
 301
 302 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 303     return JSValueMakeBoolean(context, value);
 304 }
 305
 306 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 307     return JSValueMakeNumber(context, value);
 308 }
 309
 310 #define CYCastJSValue_(Type_) \
 311     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 312         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 313         return JSValueMakeNumber(context, static_cast<double>(value)); \
 314     }
 315
 316 CYCastJSValue_(int)
 317 CYCastJSValue_(unsigned int)
 318 CYCastJSValue_(long int)
 319 CYCastJSValue_(long unsigned int)
 320 CYCastJSValue_(long long int)
 321 CYCastJSValue_(long long unsigned int)
 322
 323 JSValueRef CYJSUndefined(JSContextRef context) {
 324     return JSValueMakeUndefined(context);
 325 }
 326
 327 double CYCastDouble(JSContextRef context, JSValueRef value) {
 328     return _jsccall(JSValueToNumber, context, value);
 329 }
 330
 331 bool CYCastBool(JSContextRef context, JSValueRef value) {
 332     return JSValueToBoolean(context, value);
 333 }
 334
 335 JSValueRef CYJSNull(JSContextRef context) {
 336     return JSValueMakeNull(context);
 337 }
 338
 339 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 340     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 341 }
 342
 343 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 344     return CYCastJSValue(context, CYJSString(value));
 345 }
 346
 347 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 348     return _jsccall(JSValueToObject, context, value);
 349 }
 350
 351 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 352     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 353 }
 354
 355 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 356     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 357 }
 358
 359 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 360     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 361 }
 362
 363 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 364     return JSValueIsStrictEqual(context, lhs, rhs);
 365 }
 366
 367 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 368     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 369 }
 370
 371 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 372     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 373 }
 374
 375 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 376     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 377     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 378 }
 379
 380 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 381     return CYArrayPush(context, array, 1, &value);
 382 }
 383
 384 template <size_t Size_>
 385 class CYArrayBuilder {
 386   private:
 387     JSContextRef context_;
 388     JSObjectRef &array_;
 389     size_t size_;
 390     JSValueRef values_[Size_];
 391
 392     void flush() {
 393         if (array_ == NULL)
 394             array_ = CYObjectMakeArray(context_, size_, values_);
 395         else
 396             CYArrayPush(context_, array_, size_, values_);
 397     }
 398
 399   public:
 400     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 401         context_(context),
 402         array_(array),
 403         size_(0)
 404     {
 405     }
 406
 407     ~CYArrayBuilder() {
 408         flush();
 409     }
 410
 411     void operator ()(JSValueRef value) {
 412         if (size_ == Size_) {
 413             flush();
 414             size_ = 0;
 415         }
 416
 417         values_[size_++] = value;
 418     }
 419 };
 420
 421 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 422     FILE *file(stdout);
 423
 424     if (count == 0)
 425         fputc('\n', file);
 426     else {
 427         CYPool pool;
 428         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 429         fwrite(string.data, string.size, 1, file);
 430     }
 431
 432     fflush(file);
 433     return CYJSUndefined(context);
 434 } CYCatch(NULL) }
 435
 436 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 437
 438 _visible void CYGarbageCollect(JSContextRef context) {
 439     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 440 }
 441
 442 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 443     CYPool pool;
 444     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 445     std::stringbuf value(std::string(before.data, before.size));
 446     CYUTF8String after(CYPoolCode(pool, value));
 447     return CYCastJSValue(context, CYJSString(after));
 448 } CYCatch_(NULL, "SyntaxError") }
 449
 450 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 451     CYGarbageCollect(context);
 452     return CYJSUndefined(context);
 453 } CYCatch(NULL) }
 454
 455 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 456     switch (JSType type = JSValueGetType(context, value)) {
 457         case kJSTypeUndefined:
 458             return "undefined";
 459         case kJSTypeNull:
 460             return "null";
 461         case kJSTypeBoolean:
 462             return CYCastBool(context, value) ? "true" : "false";
 463
 464         case kJSTypeNumber: {
 465             std::ostringstream str;
 466             CYNumerify(str, CYCastDouble(context, value));
 467             std::string value(str.str());
 468             return pool.strmemdup(value.c_str(), value.size());
 469         } break;
 470
 471         case kJSTypeString: {
 472             std::ostringstream str;
 473             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 474             CYStringify(str, string.data, string.size);
 475             std::string value(str.str());
 476             return pool.strmemdup(value.c_str(), value.size());
 477         } break;
 478
 479         case kJSTypeObject:
 480             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 481         default:
 482             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 483     }
 484 } CYCatch(NULL) }
 485
 486 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 487     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 488 }
 489
 490 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 491     if (objects != NULL)
 492         return CYPoolCCYON(pool, context, value, *objects);
 493     else {
 494         std::set<void *> objects;
 495         return CYPoolCCYON(pool, context, value, objects);
 496     }
 497 }
 498
 499 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 500     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 501     if (CYIsCallable(context, toCYON)) {
 502         // XXX: this needs to be abstracted behind some kind of function
 503         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 504         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 505         _assert(value != NULL);
 506         return CYPoolCString(pool, context, value);
 507     }
 508
 509     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 510     if (CYIsCallable(context, toJSON)) {
 511         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 512         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 513     }
 514
 515     if (JSObjectIsFunction(context, object)) {
 516         JSValueRef toString(CYGetProperty(context, object, toString_s));
 517         if (CYIsCallable(context, toString)) {
 518             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 519             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 520             _assert(value != NULL);
 521             return CYPoolCString(pool, context, value);
 522         }
 523     }
 524
 525     _assert(objects.insert(object).second);
 526
 527     std::ostringstream str;
 528
 529     str << '{';
 530
 531     // XXX: this is, sadly, going to leak
 532     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 533
 534     bool comma(false);
 535
 536     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 537         if (comma)
 538             str << ',';
 539         else
 540             comma = true;
 541
 542         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 543         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 544
 545         if (CYIsKey(string))
 546             str << string.data;
 547         else
 548             CYStringify(str, string.data, string.size);
 549
 550         str << ':';
 551
 552         try {
 553             JSValueRef value(CYGetProperty(context, object, name));
 554             str << CYPoolCCYON(pool, context, value, objects);
 555         } catch (const CYException &error) {
 556             str << "@error";
 557         }
 558     }
 559
 560     JSPropertyNameArrayRelease(names);
 561
 562     str << '}';
 563
 564     std::string string(str.str());
 565     return pool.strmemdup(string.c_str(), string.size());
 566 }
 567
 568 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 569     if (count == 0)
 570         return NULL;
 571     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 572 }
 573
 574 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 575     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 576     // XXX: this is horribly inefficient
 577     std::set<void *> backup;
 578     if (objects == NULL)
 579         objects = &backup;
 580
 581     CYPool pool;
 582     std::ostringstream str;
 583
 584     str << '[';
 585
 586     JSValueRef length(CYGetProperty(context, _this, length_s));
 587     bool comma(false);
 588
 589     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 590         if (comma)
 591             str << ',';
 592         else
 593             comma = true;
 594
 595         try {
 596             JSValueRef value(CYGetProperty(context, _this, index));
 597             if (!JSValueIsUndefined(context, value))
 598                 str << CYPoolCCYON(pool, context, value, *objects);
 599             else {
 600                 str << ',';
 601                 comma = false;
 602             }
 603         } catch (const CYException &error) {
 604             str << "@error";
 605         }
 606     }
 607
 608     str << ']';
 609
 610     std::string value(str.str());
 611     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 612 } CYCatch(NULL) }
 613
 614 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 615     CYPool pool;
 616     std::ostringstream str;
 617
 618     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 619     CYStringify(str, string.data, string.size);
 620
 621     std::string value(str.str());
 622     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 623 } CYCatch(NULL) }
 624
 625 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 626     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 627     return JSObjectMake(context, Pointer_, internal);
 628 }
 629
 630 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, const char *encoding, JSObjectRef owner) {
 631     Pointer *internal(new Pointer(pointer, context, owner, length, encoding));
 632     return JSObjectMake(context, Pointer_, internal);
 633 }
 634
 635 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 636     CString *internal(new CString(pointer, context, owner));
 637     return JSObjectMake(context, CString_, internal);
 638 }
 639
 640 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 641     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 642 }
 643
 644 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 645     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 646     if (function == NULL)
 647         return NULL;
 648
 649     cy::Functor *internal(new cy::Functor(encoding, function));
 650     ++internal->count_;
 651     return JSObjectMake(context, Functor_, internal);
 652 }
 653
 654 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 655     return CYGetOffset(CYPoolCString(pool, context, value), index);
 656 }
 657
 658 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 659     if (value == NULL)
 660         return NULL;
 661     else switch (JSValueGetType(context, value)) {
 662         case kJSTypeNull:
 663             return NULL;
 664         case kJSTypeObject: {
 665             JSObjectRef object((JSObjectRef) value);
 666             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 667                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 668                 return internal->value_;
 669             }
 670             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 671             if (CYIsCallable(context, toPointer)) {
 672                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 673                 _assert(value != NULL);
 674                 return CYCastPointer_(context, value, guess);
 675             }
 676         } default:
 677             if (guess != NULL)
 678                 *guess = true;
 679         case kJSTypeNumber:
 680             double number(CYCastDouble(context, value));
 681             if (!std::isnan(number))
 682                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 683             if (guess == NULL)
 684                 throw CYJSError(context, "cannot convert value to pointer");
 685             else {
 686                 *guess = true;
 687                 return NULL;
 688             }
 689     }
 690 }
 691
 692 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 693     switch (type->primitive) {
 694         case sig::boolean_P:
 695             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 696         break;
 697
 698 #define CYPoolFFI_(primitive, native) \
 699         case sig::primitive ## _P: \
 700             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 701         break;
 702
 703         CYPoolFFI_(uchar, unsigned char)
 704         CYPoolFFI_(schar, signed char)
 705         CYPoolFFI_(ushort, unsigned short)
 706         CYPoolFFI_(short, short)
 707         CYPoolFFI_(ulong, unsigned long)
 708         CYPoolFFI_(long, long)
 709         CYPoolFFI_(uint, unsigned int)
 710         CYPoolFFI_(int, int)
 711         CYPoolFFI_(ulonglong, unsigned long long)
 712         CYPoolFFI_(longlong, long long)
 713         CYPoolFFI_(float, float)
 714         CYPoolFFI_(double, double)
 715
 716         case sig::array_P: {
 717             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 718             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 719             for (size_t index(0); index != type->data.data.size; ++index) {
 720                 ffi_type *field(ffi->elements[index]);
 721
 722                 JSValueRef rhs;
 723                 if (aggregate == NULL)
 724                     rhs = value;
 725                 else {
 726                     rhs = CYGetProperty(context, aggregate, index);
 727                     if (JSValueIsUndefined(context, rhs))
 728                         throw CYJSError(context, "unable to extract array value");
 729                 }
 730
 731                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 732                 // XXX: alignment?
 733                 base += field->size;
 734             }
 735         } break;
 736
 737         case sig::pointer_P:
 738             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 739         break;
 740
 741         case sig::string_P: {
 742             bool guess(false);
 743             *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 744             if (guess && pool != NULL)
 745                 *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 746         } break;
 747
 748         case sig::struct_P: {
 749             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 750             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 751             for (size_t index(0); index != type->data.signature.count; ++index) {
 752                 sig::Element *element(&type->data.signature.elements[index]);
 753                 ffi_type *field(ffi->elements[index]);
 754
 755                 JSValueRef rhs;
 756                 if (aggregate == NULL)
 757                     rhs = value;
 758                 else {
 759                     rhs = CYGetProperty(context, aggregate, index);
 760                     if (JSValueIsUndefined(context, rhs)) {
 761                         if (element->name != NULL)
 762                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 763                         else
 764                             goto undefined;
 765                         if (JSValueIsUndefined(context, rhs)) undefined:
 766                             throw CYJSError(context, "unable to extract structure value");
 767                     }
 768                 }
 769
 770                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 771                 // XXX: alignment?
 772                 base += field->size;
 773             }
 774         } break;
 775
 776         case sig::void_P:
 777         break;
 778
 779         // XXX: implement a conversion from a single character string?
 780         CYPoolFFI_(char, char)
 781
 782         default:
 783             for (CYHook *hook : GetHooks())
 784                 if (hook->PoolFFI != NULL)
 785                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 786                         return;
 787
 788             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 789     }
 790 }
 791
 792 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 793     switch (type->primitive) {
 794         case sig::boolean_P:
 795             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 796
 797 #define CYFromFFI_(primitive, native) \
 798         case sig::primitive ## _P: \
 799             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 800
 801         CYFromFFI_(uchar, unsigned char)
 802         CYFromFFI_(schar, signed char)
 803         CYFromFFI_(ushort, unsigned short)
 804         CYFromFFI_(short, short)
 805         CYFromFFI_(ulong, unsigned long)
 806         CYFromFFI_(long, long)
 807         CYFromFFI_(uint, unsigned int)
 808         CYFromFFI_(int, int)
 809         CYFromFFI_(ulonglong, unsigned long long)
 810         CYFromFFI_(longlong, long long)
 811         CYFromFFI_(float, float)
 812         CYFromFFI_(double, double)
 813
 814         case sig::array_P:
 815             if (void *pointer = data)
 816                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 817             else goto null;
 818
 819         case sig::pointer_P:
 820             if (void *pointer = *reinterpret_cast<void **>(data))
 821                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 822             else goto null;
 823
 824         case sig::string_P:
 825             if (char *pointer = *reinterpret_cast<char **>(data))
 826                 return CYMakeCString(context, pointer, owner);
 827             else goto null;
 828
 829         case sig::struct_P:
 830             return CYMakeStruct(context, data, type, ffi, owner);
 831         case sig::void_P:
 832             return CYJSUndefined(context);
 833
 834         CYFromFFI_(char, char)
 835
 836         null:
 837             return CYJSNull(context);
 838         default:
 839             for (CYHook *hook : GetHooks())
 840                 if (hook->FromFFI != NULL)
 841                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 842                         return value;
 843
 844             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 845     }
 846 }
 847
 848 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 849     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 850
 851     JSContextRef context(internal->context_);
 852
 853     size_t count(internal->cif_.nargs);
 854     JSValueRef values[count];
 855
 856     for (size_t index(0); index != count; ++index)
 857         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 858
 859     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 860     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 861 }
 862
 863 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 864     return CYCallAsFunction(context, function, NULL, count, values);
 865 }
 866
 867 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 868     // XXX: in case of exceptions this will leak
 869     // XXX: in point of fact, this may /need/ to leak :(
 870     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 871
 872 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 873     void *executable;
 874     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 875
 876     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 877     _assert(status == FFI_OK);
 878
 879     internal->value_ = executable;
 880 #else
 881     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 882         NULL, sizeof(ffi_closure),
 883         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 884         -1, 0
 885     )));
 886
 887     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 888     _assert(status == FFI_OK);
 889
 890     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 891
 892     internal->value_ = closure;
 893 #endif
 894
 895     return internal;
 896 }
 897
 898 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 899     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 900     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 901     // XXX: see above notes about needing to leak
 902     JSValueProtect(CYGetJSContext(context), object);
 903     return object;
 904 }
 905
 906 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 907     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 908 }
 909
 910 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 911     return CYCastJSObject(context, CYGetCachedValue(context, name));
 912 }
 913
 914 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 915     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 916
 917     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 918     if (function) {
 919         JSObjectRef function(CYCastJSObject(context, value));
 920         return CYMakeFunctor(context, function, signature);
 921     } else {
 922         void (*function)()(CYCastPointer<void (*)()>(context, value));
 923         return CYMakeFunctor(context, function, signature);
 924     }
 925 }
 926
 927 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 928     CYPool pool;
 929     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 930     char *string(static_cast<char *>(internal->value_));
 931
 932     ssize_t offset;
 933     if (!CYGetOffset(pool, context, property, offset))
 934         return NULL;
 935
 936     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 937 } CYCatch(NULL) }
 938
 939 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 940     CYPool pool;
 941     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 942     char *string(static_cast<char *>(internal->value_));
 943
 944     ssize_t offset;
 945     if (!CYGetOffset(pool, context, property, offset))
 946         return false;
 947
 948     const char *data(CYPoolCString(pool, context, value));
 949     string[offset] = *data;
 950     return true;
 951 } CYCatch(false) }
 952
 953 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 954     Type_privateData *typical(internal->type_);
 955     sig::Type *type(typical->type_);
 956     if (type == NULL)
 957         return false;
 958
 959     const char *name(CYPoolCString(pool, context, property));
 960     size_t length(strlen(name));
 961     double number(CYCastDouble(name, length));
 962
 963     size_t count(type->data.signature.count);
 964
 965     if (std::isnan(number)) {
 966         if (property == NULL)
 967             return false;
 968
 969         sig::Element *elements(type->data.signature.elements);
 970
 971         for (size_t local(0); local != count; ++local) {
 972             sig::Element *element(&elements[local]);
 973             if (element->name != NULL && strcmp(name, element->name) == 0) {
 974                 index = local;
 975                 goto base;
 976             }
 977         }
 978
 979         return false;
 980     } else {
 981         index = static_cast<ssize_t>(number);
 982         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 983             return false;
 984     }
 985
 986   base:
 987     ffi_type **elements(typical->GetFFI()->elements);
 988
 989     size_t offset(0);
 990     for (ssize_t local(0); local != index; ++local) {
 991         offset += elements[local]->size;
 992         CYAlign(offset, elements[local + 1]->alignment);
 993     }
 994
 995     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
 996     return true;
 997 }
 998
 999 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1000     CYPool pool;
1001     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1002
1003     if (JSStringIsEqual(property, length_s))
1004         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
1005
1006     Type_privateData *typical(internal->type_);
1007     if (typical->type_ == NULL)
1008         return NULL;
1009     sig::Type &type(*typical->type_);
1010
1011     ssize_t offset;
1012     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1013         offset = 0;
1014     else if (!CYGetOffset(pool, context, property, offset))
1015         return NULL;
1016
1017     if (type.primitive == sig::function_P)
1018         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
1019
1020     ffi_type *ffi(typical->GetFFI());
1021
1022     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
1023     base += ffi->size * offset;
1024
1025     JSObjectRef owner(internal->GetOwner() ?: object);
1026     return CYFromFFI(context, &type, ffi, base, false, owner);
1027 } CYCatch(NULL) }
1028
1029 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1030     CYPool pool;
1031     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1032     Type_privateData *typical(internal->type_);
1033
1034     if (typical->type_ == NULL)
1035         return false;
1036
1037     ssize_t offset;
1038     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1039         offset = 0;
1040     else if (!CYGetOffset(pool, context, property, offset))
1041         return false;
1042
1043     ffi_type *ffi(typical->GetFFI());
1044
1045     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
1046     base += ffi->size * offset;
1047
1048     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
1049     return true;
1050 } CYCatch(false) }
1051
1052 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1053     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1054     Type_privateData *typical(internal->type_);
1055     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
1056 } CYCatch(NULL) }
1057
1058 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1059     CYPool pool;
1060     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1061     Type_privateData *typical(internal->type_);
1062
1063     ssize_t index;
1064     uint8_t *base;
1065
1066     if (!Index_(pool, context, internal, property, index, base))
1067         return NULL;
1068
1069     JSObjectRef owner(internal->GetOwner() ?: object);
1070
1071     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
1072 } CYCatch(NULL) }
1073
1074 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1075     CYPool pool;
1076     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1077     Type_privateData *typical(internal->type_);
1078
1079     ssize_t index;
1080     uint8_t *base;
1081
1082     if (!Index_(pool, context, internal, property, index, base))
1083         return false;
1084
1085     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
1086     return true;
1087 } CYCatch(false) }
1088
1089 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1090     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1091     Type_privateData *typical(internal->type_);
1092     sig::Type *type(typical->type_);
1093
1094     if (type == NULL)
1095         return;
1096
1097     size_t count(type->data.signature.count);
1098     sig::Element *elements(type->data.signature.elements);
1099
1100     char number[32];
1101
1102     for (size_t index(0); index != count; ++index) {
1103         const char *name;
1104         name = elements[index].name;
1105
1106         if (name == NULL) {
1107             sprintf(number, "%zu", index);
1108             name = number;
1109         }
1110
1111         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1112     }
1113 }
1114
1115 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1116     ffi_call(cif, function, value, values);
1117 }
1118
1119 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
1120     if (setups + count != signature->count - 1)
1121         throw CYJSError(context, "incorrect number of arguments to ffi function");
1122
1123     size_t size(setups + count);
1124     void *values[size];
1125     memcpy(values, setup, sizeof(void *) * setups);
1126
1127     for (size_t index(setups); index != size; ++index) {
1128         sig::Element *element(&signature->elements[index + 1]);
1129         ffi_type *ffi(cif->arg_types[index]);
1130         // XXX: alignment?
1131         values[index] = new(pool) uint8_t[ffi->size];
1132         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
1133     }
1134
1135     uint8_t value[cif->rtype->size];
1136
1137     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1138     // XXX: this only supports one hook, but it is a bad idea anyway
1139     for (CYHook *hook : GetHooks())
1140         if (hook->CallFunction != NULL)
1141             call = hook->CallFunction;
1142
1143     call(pool, context, cif, function, value, values);
1144     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1145 }
1146
1147 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1148     CYPool pool;
1149     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1150     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1151 } CYCatch(NULL) }
1152
1153 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1154     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1155     if (internal->type_->type_->primitive != sig::function_P)
1156         throw CYJSError(context, "cannot call a pointer to non-function");
1157     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1158     return CYCallAsFunction(context, functor, _this, count, arguments);
1159 } CYCatch(NULL) }
1160
1161 JSObjectRef CYMakeType(JSContextRef context, sig::Primitive primitive) {
1162     Type_privateData *internal(new Type_privateData(primitive));
1163     return JSObjectMake(context, Type_privateData::Class_, internal);
1164 }
1165
1166 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1167     Type_privateData *internal(new Type_privateData(type));
1168     return JSObjectMake(context, Type_privateData::Class_, internal);
1169 }
1170
1171 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1172     CYPool pool;
1173
1174     sig::Type type;
1175     type.name = NULL;
1176     type.flags = 0;
1177
1178     type.primitive = sig::function_P;
1179     sig::Copy(pool, type.data.signature, *signature);
1180
1181     return CYMakeType(context, &type);
1182 }
1183
1184 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1185     sqlite3_stmt *statement;
1186
1187     _sqlcall(sqlite3_prepare(database_,
1188         "select "
1189             "\"cache\".\"code\", "
1190             "\"cache\".\"flags\" "
1191         "from \"cache\" "
1192         "where"
1193             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1194             " \"cache\".\"name\" = ?"
1195         " limit 1"
1196     , -1, &statement, NULL));
1197
1198     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1199
1200     bool success;
1201     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1202         success = false;
1203     else {
1204         success = true;
1205         code = sqlite3_column_pooled(pool, statement, 0);
1206         flags = sqlite3_column_int(statement, 1);
1207     }
1208
1209     _sqlcall(sqlite3_finalize(statement));
1210     return success;
1211 }
1212
1213 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1214     if (JSStringIsEqualToUTF8CString(property, "errno"))
1215         return true;
1216
1217     JSObjectRef global(CYGetGlobalObject(context));
1218     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1219     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1220
1221     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1222         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1223             if (CYHasProperty(context, space, property))
1224                 return true;
1225
1226     CYPool pool;
1227     const char *code;
1228     unsigned flags;
1229     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1230         return true;
1231
1232     return false;
1233 }
1234
1235 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1236     if (JSStringIsEqualToUTF8CString(property, "errno"))
1237         return CYCastJSValue(context, errno);
1238
1239     JSObjectRef global(CYGetGlobalObject(context));
1240     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1241     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1242
1243     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1244         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1245             if (JSValueRef value = CYGetProperty(context, space, property))
1246                 if (!JSValueIsUndefined(context, value))
1247                     return value;
1248
1249     CYPool pool;
1250     const char *code;
1251     unsigned flags;
1252     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1253         CYUTF8String parsed;
1254
1255         try {
1256             parsed = CYPoolCode(pool, code);
1257         } catch (const CYException &error) {
1258             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1259         }
1260
1261         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1262
1263         if (flags == 0) {
1264             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1265             CYSetProperty(context, cache, property, result);
1266         }
1267
1268         return result;
1269     }
1270
1271     return NULL;
1272 } CYCatch(NULL) }
1273
1274 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1275     _assert(count == 1);
1276     CYPool pool;
1277     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1278
1279     JSObjectRef array(NULL);
1280
1281     {
1282     CYArrayBuilder<1024> values(context, array);
1283
1284     sqlite3_stmt *statement;
1285
1286     if (prefix.size == 0)
1287         _sqlcall(sqlite3_prepare(database_,
1288             "select "
1289                 "\"cache\".\"name\" "
1290             "from \"cache\" "
1291             "where"
1292                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1293         , -1, &statement, NULL));
1294     else {
1295         _sqlcall(sqlite3_prepare(database_,
1296             "select "
1297                 "\"cache\".\"name\" "
1298             "from \"cache\" "
1299             "where"
1300                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1301                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1302         , -1, &statement, NULL));
1303
1304         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1305
1306         char *after(pool.strndup(prefix.data, prefix.size));
1307         ++after[prefix.size - 1];
1308         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1309     }
1310
1311     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1312         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1313
1314     _sqlcall(sqlite3_finalize(statement));
1315     }
1316
1317     return array;
1318 } CYCatch(NULL) }
1319
1320 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1321     JSObjectRef global(CYGetGlobalObject(context));
1322     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1323     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1324
1325     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1326         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1327             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1328             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1329                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1330             JSPropertyNameArrayRelease(subset);
1331         }
1332 }
1333
1334 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1335     if (count != 1)
1336         throw CYJSError(context, "incorrect number of arguments to CString constructor");
1337     char *value(CYCastPointer<char *>(context, arguments[0]));
1338     return CYMakeCString(context, value, NULL);
1339 } CYCatch(NULL) }
1340
1341 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1342     if (count != 2)
1343         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1344
1345     CYPool pool;
1346
1347     void *value(CYCastPointer<void *>(context, arguments[0]));
1348     const char *type(CYPoolCString(pool, context, arguments[1]));
1349
1350     sig::Signature signature;
1351     sig::Parse(pool, &signature, type, &Structor_);
1352
1353     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1354 } CYCatch(NULL) }
1355
1356 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1357     CYPool pool;
1358
1359     if (false) {
1360     } else if (count == 1) {
1361         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1362         sig::Signature signature;
1363         sig::Parse(pool, &signature, encoding, &Structor_);
1364         return CYMakeType(context, signature.elements[0].type);
1365     } else if (count == 2) {
1366         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1367         size_t count(CYArrayLength(context, types));
1368
1369         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1370
1371         sig::Type type;
1372         type.name = NULL;
1373         type.flags = 0;
1374
1375         type.primitive = sig::struct_P;
1376         type.data.signature.elements = new(pool) sig::Element[count];
1377         type.data.signature.count = count;
1378
1379         for (size_t i(0); i != count; ++i) {
1380             sig::Element &element(type.data.signature.elements[i]);
1381             element.offset = _not(size_t);
1382
1383             JSValueRef name(CYArrayGet(context, names, i));
1384             if (JSValueIsUndefined(context, name))
1385                 element.name = NULL;
1386             else
1387                 element.name = CYPoolCString(pool, context, name);
1388
1389             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1390             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1391             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1392             element.type = internal->type_;
1393         }
1394
1395         return CYMakeType(context, &type);
1396     } else {
1397         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1398     }
1399 } CYCatch(NULL) }
1400
1401 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1402     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1403
1404     CYPool pool;
1405
1406     sig::Type type;
1407     type.name = NULL;
1408     type.flags = 0;
1409
1410     type.primitive = primitive;
1411     type.data.signature.elements = new(pool) sig::Element[1 + count];
1412     type.data.signature.count = 1 + count;
1413
1414     type.data.signature.elements[0].name = NULL;
1415     type.data.signature.elements[0].type = internal->type_;
1416     type.data.signature.elements[0].offset = _not(size_t);
1417
1418     for (size_t i(0); i != count; ++i) {
1419         sig::Element &element(type.data.signature.elements[i + 1]);
1420         element.name = NULL;
1421         element.offset = _not(size_t);
1422
1423         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1424         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1425         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1426
1427         element.type = internal->type_;
1428     }
1429
1430     return CYMakeType(context, &type);
1431 } CYCatch(NULL) }
1432
1433 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1434     if (count != 1)
1435         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1436     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1437
1438     CYPool pool;
1439     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1440     if (index == _not(size_t))
1441         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1442
1443     sig::Type type;
1444     type.name = NULL;
1445     type.flags = 0;
1446
1447     type.primitive = sig::array_P;
1448     type.data.data.type = internal->type_;
1449     type.data.data.size = index;
1450
1451     return CYMakeType(context, &type);
1452 } CYCatch(NULL) }
1453
1454 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1455     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1456 }
1457
1458 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1459     if (count != 0)
1460         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1461     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1462
1463     sig::Type type(*internal->type_);
1464     type.flags |= JOC_TYPE_CONST;
1465     return CYMakeType(context, &type);
1466 } CYCatch(NULL) }
1467
1468 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1469     if (count != 0)
1470         throw CYJSError(context, "incorrect number of arguments to Type.long");
1471     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1472
1473     sig::Type type(*internal->type_);
1474
1475     switch (type.primitive) {
1476         case sig::short_P: type.primitive = sig::int_P; break;
1477         case sig::int_P: type.primitive = sig::long_P; break;
1478         case sig::long_P: type.primitive = sig::longlong_P; break;
1479         default: throw CYJSError(context, "invalid type argument to Type.long");
1480     }
1481
1482     return CYMakeType(context, &type);
1483 } CYCatch(NULL) }
1484
1485 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1486     if (count != 0)
1487         throw CYJSError(context, "incorrect number of arguments to Type.short");
1488     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1489
1490     sig::Type type(*internal->type_);
1491
1492     switch (type.primitive) {
1493         case sig::int_P: type.primitive = sig::short_P; break;
1494         case sig::long_P: type.primitive = sig::int_P; break;
1495         case sig::longlong_P: type.primitive = sig::long_P; break;
1496         default: throw CYJSError(context, "invalid type argument to Type.short");
1497     }
1498
1499     return CYMakeType(context, &type);
1500 } CYCatch(NULL) }
1501
1502 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1503     if (count != 0)
1504         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1505     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1506
1507     sig::Type type(*internal->type_);
1508
1509     switch (type.primitive) {
1510         case sig::char_P: case sig::schar_P: case sig::uchar_P: type.primitive = sig::schar_P; break;
1511         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1512         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1513         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1514         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1515         default: throw CYJSError(context, "invalid type argument to Type.signed");
1516     }
1517
1518     return CYMakeType(context, &type);
1519 } CYCatch(NULL) }
1520
1521 static JSValueRef Type_callAsFunction_unsigned(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.unsigned");
1524     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1525
1526     sig::Type type(*internal->type_);
1527
1528     switch (type.primitive) {
1529         case sig::char_P: case sig::schar_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1530         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1531         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1532         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1533         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1534         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1535     }
1536
1537     return CYMakeType(context, &type);
1538 } CYCatch(NULL) }
1539
1540 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1541     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1542 }
1543
1544 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1545     if (count != 0)
1546         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1547     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1548
1549     sig::Type type;
1550     type.name = NULL;
1551
1552     if (internal->type_->primitive == sig::char_P) {
1553         type.flags = internal->type_->flags;
1554         type.primitive = sig::string_P;
1555         type.data.data.type = NULL;
1556         type.data.data.size = 0;
1557     } else {
1558         type.flags = 0;
1559         type.primitive = sig::pointer_P;
1560         type.data.data.type = internal->type_;
1561         type.data.data.size = 0;
1562     }
1563
1564     return CYMakeType(context, &type);
1565 } CYCatch(NULL) }
1566
1567 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1568     if (count != 1)
1569         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1570     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1571
1572     CYPool pool;
1573     const char *name(CYPoolCString(pool, context, arguments[0]));
1574
1575     sig::Type type(*internal->type_);
1576     type.name = name;
1577     return CYMakeType(context, &type);
1578 } CYCatch(NULL) }
1579
1580 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1581     if (count != 1)
1582         throw CYJSError(context, "incorrect number of arguments to type cast function");
1583     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1584
1585     if (internal->type_->primitive == sig::function_P)
1586         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1587
1588     sig::Type *type(internal->type_);
1589     ffi_type *ffi(internal->GetFFI());
1590     // XXX: alignment?
1591     uint8_t value[ffi->size];
1592     CYPool pool;
1593     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1594     return CYFromFFI(context, type, ffi, value);
1595 } CYCatch(NULL) }
1596
1597 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1598     if (count != 0)
1599         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1600     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1601
1602     sig::Type *type(internal->type_);
1603     size_t length;
1604
1605     if (type->primitive != sig::array_P)
1606         length = _not(size_t);
1607     else {
1608         length = type->data.data.size;
1609         type = type->data.data.type;
1610     }
1611
1612     JSObjectRef pointer(CYMakePointer(context, NULL, length, type, NULL, NULL));
1613     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1614     value->value_ = value->pool_->malloc<void>(internal->GetFFI()->size);
1615     memset(value->value_, 0, internal->GetFFI()->size);
1616     return pointer;
1617 } CYCatch(NULL) }
1618
1619 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1620     if (count != 2)
1621         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1622     CYPool pool;
1623     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1624     sig::Signature signature;
1625     sig::Parse(pool, &signature, encoding, &Structor_);
1626     return CYMakeFunctor(context, arguments[0], signature);
1627 } CYCatch(NULL) }
1628
1629 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1630     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1631
1632     sig::Type type;
1633     type.name = NULL;
1634     type.flags = 0;
1635
1636     type.primitive = sig::char_P;
1637     type.data.data.type = NULL;
1638     type.data.data.size = 0;
1639
1640     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1641 } CYCatch(NULL) }
1642
1643 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1644     CYPool pool;
1645     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1646
1647     sig::Type type;
1648     type.name = NULL;
1649     type.flags = 0;
1650
1651     type.primitive = sig::function_P;
1652     sig::Copy(pool, type.data.signature, internal->signature_);
1653
1654     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1655 } CYCatch(NULL) }
1656
1657 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1658     return _this;
1659 } CYCatch(NULL) }
1660
1661 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1662     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1663     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1664 } CYCatch(NULL) }
1665
1666 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1667     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1668 }
1669
1670 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1671     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1672     std::ostringstream str;
1673     Dl_info info;
1674     if (internal->value_ == NULL)
1675         str << "NULL";
1676     else if (dladdr(internal->value_, &info) == 0)
1677         str << internal->value_;
1678     else {
1679         str << info.dli_sname;
1680         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1681         if (offset != 0)
1682             str << "+0x" << std::hex << offset;
1683     }
1684     std::string value(str.str());
1685     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1686 } CYCatch(NULL) }
1687
1688 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1689     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1690
1691     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1692     if (internal->length_ != _not(size_t)) {
1693         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1694         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1695         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1696     } else if (internal->type_->type_ == NULL) pointer: {
1697         CYLocalPool pool;
1698         std::ostringstream str;
1699
1700         sig::Type type;
1701         type.name = NULL;
1702         type.flags = 0;
1703
1704         type.primitive = sig::pointer_P;
1705         type.data.data.type = internal->type_->type_;
1706         type.data.data.size = 0;
1707
1708         CYOptions options;
1709         CYOutput output(*str.rdbuf(), options);
1710         (new(pool) CYTypeExpression(Decode(pool, &type)))->Output(output, CYNoFlags);
1711
1712         str << "(" << internal->value_ << ")";
1713         std::string value(str.str());
1714         return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1715     } else try {
1716         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1717         if (JSValueIsUndefined(context, value))
1718             goto pointer;
1719         CYPool pool;
1720         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1721     } catch (const CYException &e) {
1722         goto pointer;
1723     }
1724 } CYCatch(NULL) }
1725
1726 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1727     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1728     char *string(static_cast<char *>(internal->value_));
1729     return CYCastJSValue(context, strlen(string));
1730 } CYCatch(NULL) }
1731
1732 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1733     sig::Type type;
1734     type.name = NULL;
1735     type.flags = 0;
1736
1737     type.primitive = sig::char_P;
1738     type.data.data.type = NULL;
1739     type.data.data.size = 0;
1740
1741     return CYMakeType(context, &type);
1742 } CYCatch(NULL) }
1743
1744 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1745     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1746     return CYMakeType(context, internal->type_->type_);
1747 } CYCatch(NULL) }
1748
1749 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1750     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1751     const char *string(static_cast<const char *>(internal->value_));
1752     std::ostringstream str;
1753     str << "&";
1754     CYStringify(str, string, strlen(string), true);
1755     std::string value(str.str());
1756     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1757 } CYCatch(NULL) }
1758
1759 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1760     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1761     const char *string(static_cast<const char *>(internal->value_));
1762     return CYCastJSValue(context, string);
1763 } CYCatch(NULL) }
1764
1765 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1766     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1767     return CYMakeType(context, &internal->signature_);
1768 } CYCatch(NULL) }
1769
1770 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1771     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1772     return CYCastJSValue(context, internal->GetFFI()->alignment);
1773 } CYCatch(NULL) }
1774
1775 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1776     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1777     return CYCastJSValue(context, internal->type_->name);
1778 } CYCatch(NULL) }
1779
1780 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1781     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1782     return CYCastJSValue(context, internal->GetFFI()->size);
1783 } CYCatch(NULL) }
1784
1785 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1786     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1787     CYPool pool;
1788     const char *type(sig::Unparse(pool, internal->type_));
1789     return CYCastJSValue(context, CYJSString(type));
1790 } CYCatch(NULL) }
1791
1792 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1793     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1794     CYLocalPool pool;
1795     std::stringbuf out;
1796     CYOptions options;
1797     CYOutput output(out, options);
1798     (new(pool) CYTypeExpression(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1799     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1800 } CYCatch(NULL) }
1801
1802 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1803     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1804 }
1805
1806 static JSStaticFunction All_staticFunctions[2] = {
1807     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1808     {NULL, NULL, 0}
1809 };
1810
1811 static JSStaticFunction CString_staticFunctions[6] = {
1812     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1813     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1814     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1815     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1816     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1817     {NULL, NULL, 0}
1818 };
1819
1820 static JSStaticValue CString_staticValues[3] = {
1821     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1822     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1823     {NULL, NULL, NULL, 0}
1824 };
1825
1826 static JSStaticFunction Pointer_staticFunctions[5] = {
1827     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1828     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1829     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1830     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1831     {NULL, NULL, 0}
1832 };
1833
1834 static JSStaticValue Pointer_staticValues[2] = {
1835     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1836     {NULL, NULL, NULL, 0}
1837 };
1838
1839 static JSStaticFunction Struct_staticFunctions[2] = {
1840     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1841     {NULL, NULL, 0}
1842 };
1843
1844 static JSStaticFunction Functor_staticFunctions[5] = {
1845     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1846     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1847     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1848     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1849     {NULL, NULL, 0}
1850 };
1851
1852 namespace cy {
1853     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1854 }
1855
1856 static JSStaticValue Functor_staticValues[2] = {
1857     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1858     {NULL, NULL, NULL, 0}
1859 };
1860
1861 namespace cy {
1862     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1863 }
1864
1865 static JSStaticValue Type_staticValues[4] = {
1866     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1867     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1868     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1869     {NULL, NULL, NULL, 0}
1870 };
1871
1872 static JSStaticFunction Type_staticFunctions[14] = {
1873     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1874     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1875     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1876     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1877     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1878     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1879     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1880     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1881     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1882     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1883     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1884     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1885     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1886     {NULL, NULL, 0}
1887 };
1888
1889 _visible void CYSetArgs(int argc, const char *argv[]) {
1890     JSContextRef context(CYGetJSContext());
1891     JSValueRef args[argc];
1892     for (int i(0); i != argc; ++i)
1893         args[i] = CYCastJSValue(context, argv[i]);
1894
1895     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1896     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1897     CYSetProperty(context, System, CYJSString("args"), array);
1898 }
1899
1900 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1901     return JSContextGetGlobalObject(context);
1902 }
1903
1904 // XXX: this is neither exceptin safe nor even terribly sane
1905 class ExecutionHandle {
1906   private:
1907     JSContextRef context_;
1908     std::vector<void *> handles_;
1909
1910   public:
1911     ExecutionHandle(JSContextRef context) :
1912         context_(context)
1913     {
1914         handles_.resize(GetHooks().size());
1915         for (size_t i(0); i != GetHooks().size(); ++i) {
1916             CYHook *hook(GetHooks()[i]);
1917             if (hook->ExecuteStart != NULL)
1918                 handles_[i] = (*hook->ExecuteStart)(context_);
1919             else
1920                 handles_[i] = NULL;
1921         }
1922     }
1923
1924     ~ExecutionHandle() {
1925         for (size_t i(GetHooks().size()); i != 0; --i) {
1926             CYHook *hook(GetHooks()[i-1]);
1927             if (hook->ExecuteEnd != NULL)
1928                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1929         }
1930     }
1931 };
1932
1933 static volatile bool cancel_;
1934
1935 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1936     return cancel_;
1937 }
1938
1939 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1940     ExecutionHandle handle(context);
1941
1942     cancel_ = false;
1943     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1944         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1945
1946     try {
1947         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1948         if (JSValueIsUndefined(context, result))
1949             return NULL;
1950
1951         std::set<void *> objects;
1952         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1953         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1954
1955         return json;
1956     } catch (const CYException &error) {
1957         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1958     }
1959 }
1960
1961 _visible void CYCancel() {
1962     cancel_ = true;
1963 }
1964
1965 static const char *CYPoolLibraryPath(CYPool &pool);
1966
1967 static bool initialized_ = false;
1968
1969 void CYInitializeDynamic() {
1970     if (!initialized_)
1971         initialized_ = true;
1972     else return;
1973
1974     CYPool pool;
1975     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1976     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1977
1978     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1979     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1980
1981     JSClassDefinition definition;
1982
1983     definition = kJSClassDefinitionEmpty;
1984     definition.className = "All";
1985     definition.staticFunctions = All_staticFunctions;
1986     definition.hasProperty = &All_hasProperty;
1987     definition.getProperty = &All_getProperty;
1988     definition.getPropertyNames = &All_getPropertyNames;
1989     All_ = JSClassCreate(&definition);
1990
1991     definition = kJSClassDefinitionEmpty;
1992     definition.className = "Context";
1993     definition.finalize = &CYFinalize;
1994     Context_ = JSClassCreate(&definition);
1995
1996     definition = kJSClassDefinitionEmpty;
1997     definition.className = "CString";
1998     definition.staticFunctions = CString_staticFunctions;
1999     definition.staticValues = CString_staticValues;
2000     definition.getProperty = &CString_getProperty;
2001     definition.setProperty = &CString_setProperty;
2002     definition.finalize = &CYFinalize;
2003     CString_ = JSClassCreate(&definition);
2004
2005     definition = kJSClassDefinitionEmpty;
2006     definition.className = "Functor";
2007     definition.staticFunctions = cy::Functor::StaticFunctions;
2008     definition.staticValues = Functor_staticValues;
2009     definition.callAsFunction = &Functor_callAsFunction;
2010     definition.finalize = &CYFinalize;
2011     Functor_ = JSClassCreate(&definition);
2012
2013     definition = kJSClassDefinitionEmpty;
2014     definition.className = "Pointer";
2015     definition.staticFunctions = Pointer_staticFunctions;
2016     definition.staticValues = Pointer_staticValues;
2017     definition.callAsFunction = &Pointer_callAsFunction;
2018     definition.getProperty = &Pointer_getProperty;
2019     definition.setProperty = &Pointer_setProperty;
2020     definition.finalize = &CYFinalize;
2021     Pointer_ = JSClassCreate(&definition);
2022
2023     definition = kJSClassDefinitionEmpty;
2024     definition.className = "Struct";
2025     definition.staticFunctions = Struct_staticFunctions;
2026     definition.getProperty = &Struct_getProperty;
2027     definition.setProperty = &Struct_setProperty;
2028     definition.getPropertyNames = &Struct_getPropertyNames;
2029     definition.finalize = &CYFinalize;
2030     Struct_ = JSClassCreate(&definition);
2031
2032     definition = kJSClassDefinitionEmpty;
2033     definition.className = "Type";
2034     definition.staticValues = Type_staticValues;
2035     definition.staticFunctions = Type_staticFunctions;
2036     definition.callAsFunction = &Type_callAsFunction;
2037     definition.callAsConstructor = &Type_callAsConstructor;
2038     definition.finalize = &CYFinalize;
2039     Type_privateData::Class_ = JSClassCreate(&definition);
2040
2041     definition = kJSClassDefinitionEmpty;
2042     definition.className = "Global";
2043     //definition.getProperty = &Global_getProperty;
2044     Global_ = JSClassCreate(&definition);
2045
2046     Array_s = JSStringCreateWithUTF8CString("Array");
2047     cy_s = JSStringCreateWithUTF8CString("$cy");
2048     cyi_s = JSStringCreateWithUTF8CString("$cyi");
2049     length_s = JSStringCreateWithUTF8CString("length");
2050     message_s = JSStringCreateWithUTF8CString("message");
2051     name_s = JSStringCreateWithUTF8CString("name");
2052     pop_s = JSStringCreateWithUTF8CString("pop");
2053     prototype_s = JSStringCreateWithUTF8CString("prototype");
2054     push_s = JSStringCreateWithUTF8CString("push");
2055     splice_s = JSStringCreateWithUTF8CString("splice");
2056     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2057     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2058     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2059     toString_s = JSStringCreateWithUTF8CString("toString");
2060     weak_s = JSStringCreateWithUTF8CString("weak");
2061
2062     Result_ = JSStringCreateWithUTF8CString("_");
2063
2064     for (CYHook *hook : GetHooks())
2065         if (hook->Initialize != NULL)
2066             (*hook->Initialize)();
2067 }
2068
2069 void CYThrow(JSContextRef context, JSValueRef value) {
2070     if (value != NULL)
2071         throw CYJSError(context, value);
2072 }
2073
2074 const char *CYJSError::PoolCString(CYPool &pool) const {
2075     std::set<void *> objects;
2076     // XXX: this used to be CYPoolCString
2077     return CYPoolCCYON(pool, context_, value_, objects);
2078 }
2079
2080 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2081     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2082     return value_;
2083 }
2084
2085 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2086     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2087     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2088     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2089 }
2090
2091 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2092     return CYCastJSError(context, name, message_);
2093 }
2094
2095 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2096     _assert(context != NULL);
2097
2098     CYPool pool;
2099
2100     va_list args;
2101     va_start(args, format);
2102     // XXX: there might be a beter way to think about this
2103     const char *message(pool.vsprintf(64, format, args));
2104     va_end(args);
2105
2106     value_ = CYCastJSError(context, "Error", message);
2107 }
2108
2109 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2110     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2111 }
2112
2113 static const char *CYPoolLibraryPath(CYPool &pool) {
2114     Dl_info addr;
2115     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2116     char *lib(pool.strdup(addr.dli_fname));
2117
2118     char *slash(strrchr(lib, '/'));
2119     _assert(slash != NULL);
2120     *slash = '\0';
2121
2122     slash = strrchr(lib, '/');
2123     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2124         *slash = '\0';
2125
2126     return lib;
2127 }
2128
2129 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2130     _assert(count == 1);
2131     CYPool pool;
2132
2133     const char *name(CYPoolCString(pool, context, arguments[0]));
2134     if (strchr(name, '/') == NULL && (
2135 #ifdef __APPLE__
2136         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2137         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2138 #endif
2139     false))
2140         return CYJSUndefined(context);
2141
2142     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2143     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2144
2145     CYJSString property("exports");
2146
2147     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2148     JSValueRef cache(CYGetProperty(context, modules, path));
2149
2150     JSValueRef result;
2151     if (!JSValueIsUndefined(context, cache)) {
2152         JSObjectRef module(CYCastJSObject(context, cache));
2153         result = CYGetProperty(context, module, property);
2154     } else {
2155         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2156         _assert(code.data != NULL);
2157
2158         size_t length(strlen(name));
2159         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2160             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2161             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2162             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2163             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2164         } else {
2165             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2166             CYSetProperty(context, modules, path, module);
2167
2168             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2169             CYSetProperty(context, module, property, exports);
2170
2171             std::stringstream wrap;
2172             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2173             code = CYPoolCode(pool, *wrap.rdbuf());
2174
2175             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2176             JSObjectRef function(CYCastJSObject(context, value));
2177
2178             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2179             CYCallAsFunction(context, function, NULL, 4, arguments);
2180             result = CYGetProperty(context, module, property);
2181         }
2182     }
2183
2184     return result;
2185 } CYCatch(NULL) }
2186
2187 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2188     CYPool pool;
2189     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2190     if (code.data == NULL)
2191         return false;
2192
2193     code = CYPoolCode(pool, code);
2194     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2195     return true;
2196 }
2197
2198 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2199 }
2200
2201 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2202     CYInitializeDynamic();
2203
2204     JSObjectRef global(CYGetGlobalObject(context));
2205
2206     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2207     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2208
2209 /* Cache Globals {{{ */
2210     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2211     CYSetProperty(context, cy, CYJSString("Array"), Array);
2212
2213     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2214     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2215
2216     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2217     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2218
2219     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2220     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2221
2222     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2223     CYSetProperty(context, cy, CYJSString("Error"), Error);
2224
2225     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2226     CYSetProperty(context, cy, CYJSString("Function"), Function);
2227
2228     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2229     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2230
2231     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2232     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2233
2234     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2235     CYSetProperty(context, cy, CYJSString("Number"), Number);
2236
2237     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2238     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2239
2240     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2241     CYSetProperty(context, cy, CYJSString("Object"), Object);
2242
2243     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2244     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2245
2246     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2247     CYSetProperty(context, cy, CYJSString("String"), String);
2248
2249     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2250     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2251
2252     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2253     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2254 /* }}} */
2255
2256     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2257     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2258
2259     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2260     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2261     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2262     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2263
2264     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2265     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2266     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2267
2268     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2269     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2270     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2271
2272     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2273     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2274
2275     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2276     CYSetProperty(context, cy, CYJSString("modules"), modules);
2277
2278     JSObjectRef all(JSObjectMake(context, All_, NULL));
2279     CYSetProperty(context, cycript, CYJSString("all"), all);
2280
2281     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2282     CYSetProperty(context, cy, CYJSString("cache"), cache);
2283     CYSetPrototype(context, cache, all);
2284
2285     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2286     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2287
2288     if (true) {
2289         JSObjectRef last(NULL), curr(global);
2290
2291         goto next; for (JSValueRef next;;) {
2292             if (JSValueIsNull(context, next))
2293                 break;
2294             last = curr;
2295             curr = CYCastJSObject(context, next);
2296           next:
2297             next = JSObjectGetPrototype(context, curr);
2298         }
2299
2300         CYSetPrototype(context, last, cache);
2301     }
2302
2303     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2304     CYSetProperty(context, cy, CYJSString("System"), System);
2305
2306     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2307
2308     CYSetProperty(context, global, CYJSString("system"), System);
2309     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2310     CYSetProperty(context, System, CYJSString("print"), &System_print);
2311
2312     CYSetProperty(context, global, CYJSString("global"), global);
2313
2314 #ifdef __APPLE__
2315     if (&JSWeakObjectMapCreate != NULL) {
2316         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2317         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2318     }
2319 #endif
2320
2321     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2322     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2323     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2324
2325     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2326
2327     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::boolean_P), kJSPropertyAttributeDontEnum);
2328     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::char_P), kJSPropertyAttributeDontEnum);
2329     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::short_P), kJSPropertyAttributeDontEnum);
2330     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::int_P), kJSPropertyAttributeDontEnum);
2331     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::long_P), kJSPropertyAttributeDontEnum);
2332     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::float_P), kJSPropertyAttributeDontEnum);
2333     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::double_P), kJSPropertyAttributeDontEnum);
2334
2335     for (CYHook *hook : GetHooks())
2336         if (hook->SetupContext != NULL)
2337             (*hook->SetupContext)(context);
2338
2339     CYArrayPush(context, alls, cycript);
2340
2341     CYRunScript(context, "/libcycript.cy");
2342 }
2343
2344 static JSGlobalContextRef context_;
2345
2346 _visible JSGlobalContextRef CYGetJSContext() {
2347     CYInitializeDynamic();
2348
2349     if (context_ == NULL) {
2350         context_ = JSGlobalContextCreate(Global_);
2351         CYSetupContext(context_);
2352     }
2353
2354     return context_;
2355 }
2356
2357 _visible void CYDestroyContext() {
2358     if (context_ == NULL)
2359         return;
2360     JSGlobalContextRelease(context_);
2361     context_ = NULL;
2362 }