Library.cpp

   1 /* Cycript - Inlining/Optimizing JavaScript Compiler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #include <sqlite3.h>
  41
  42 #include "Internal.hpp"
  43
  44 #include <dlfcn.h>
  45 #include <iconv.h>
  46
  47 #include "cycript.hpp"
  48
  49 #include "sig/parse.hpp"
  50 #include "sig/ffi_type.hpp"
  51
  52 #include "Pooling.hpp"
  53
  54 #include <sys/mman.h>
  55
  56 #include <iostream>
  57 #include <ext/stdio_filebuf.h>
  58 #include <set>
  59 #include <map>
  60 #include <iomanip>
  61 #include <sstream>
  62 #include <cmath>
  63
  64 #include "Parser.hpp"
  65 #include "Cycript.tab.hh"
  66
  67 #include "Error.hpp"
  68 #include "JavaScript.hpp"
  69 #include "String.hpp"
  70
  71 #ifdef __OBJC__
  72 #define CYCatch_ \
  73     catch (NSException *error) { \
  74         CYThrow(context, error, exception); \
  75         return NULL; \
  76     }
  77 #else
  78 #define CYCatch_
  79 #endif
  80
  81 char *sqlite3_column_pooled(apr_pool_t *pool, sqlite3_stmt *stmt, int n) {
  82     if (const unsigned char *value = sqlite3_column_text(stmt, n))
  83         return apr_pstrdup(pool, (const char *) value);
  84     else return NULL;
  85 }
  86
  87 struct CYHooks *hooks_;
  88
  89 /* JavaScript Properties {{{ */
  90 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  91     JSValueRef exception(NULL);
  92     JSValueRef value(JSObjectGetPropertyAtIndex(context, object, index, &exception));
  93     CYThrow(context, exception);
  94     return value;
  95 }
  96
  97 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  98     JSValueRef exception(NULL);
  99     JSValueRef value(JSObjectGetProperty(context, object, name, &exception));
 100     CYThrow(context, exception);
 101     return value;
 102 }
 103
 104 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
 105     JSValueRef exception(NULL);
 106     JSObjectSetPropertyAtIndex(context, object, index, value, &exception);
 107     CYThrow(context, exception);
 108 }
 109
 110 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
 111     JSValueRef exception(NULL);
 112     JSObjectSetProperty(context, object, name, value, attributes, &exception);
 113     CYThrow(context, exception);
 114 }
 115 /* }}} */
 116 /* JavaScript Strings {{{ */
 117 JSStringRef CYCopyJSString(const char *value) {
 118     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 119 }
 120
 121 JSStringRef CYCopyJSString(JSStringRef value) {
 122     return value == NULL ? NULL : JSStringRetain(value);
 123 }
 124
 125 JSStringRef CYCopyJSString(CYUTF8String value) {
 126     // XXX: this is very wrong
 127     return CYCopyJSString(value.data);
 128 }
 129
 130 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 131     if (JSValueIsNull(context, value))
 132         return NULL;
 133     JSValueRef exception(NULL);
 134     JSStringRef string(JSValueToStringCopy(context, value, &exception));
 135     CYThrow(context, exception);
 136     return string;
 137 }
 138
 139 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 140     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 141 }
 142
 143 static CYUTF8String CYPoolUTF8String(apr_pool_t *pool, JSContextRef context, JSStringRef value) {
 144     _assert(pool != NULL);
 145
 146     CYUTF16String utf16(CYCastUTF16String(value));
 147     const char *in(reinterpret_cast<const char *>(utf16.data));
 148
 149     iconv_t conversion(_syscall(iconv_open("UTF-8", "UCS-2-INTERNAL")));
 150
 151     size_t size(JSStringGetMaximumUTF8CStringSize(value));
 152     char *out(new(pool) char[size]);
 153     CYUTF8String utf8(out, size);
 154
 155     size = utf16.size * 2;
 156     _syscall(iconv(conversion, const_cast<char **>(&in), &size, &out, &utf8.size));
 157
 158     *out = '\0';
 159     utf8.size = out - utf8.data;
 160
 161     _syscall(iconv_close(conversion));
 162
 163     return utf8;
 164 }
 165
 166 const char *CYPoolCString(apr_pool_t *pool, JSContextRef context, JSStringRef value) {
 167     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 168     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 169     return utf8.data;
 170 }
 171
 172 const char *CYPoolCString(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 173     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 174 }
 175 /* }}} */
 176
 177 /* Index Offsets {{{ */
 178 size_t CYGetIndex(const CYUTF8String &value) {
 179     if (value.data[0] != '0') {
 180         char *end;
 181         size_t index(strtoul(value.data, &end, 10));
 182         if (value.data + value.size == end)
 183             return index;
 184     } else if (value.data[1] == '\0')
 185         return 0;
 186     return _not(size_t);
 187 }
 188
 189 size_t CYGetIndex(apr_pool_t *pool, JSContextRef context, JSStringRef value) {
 190     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 191 }
 192
 193 bool CYGetOffset(const char *value, ssize_t &index) {
 194     if (value[0] != '0') {
 195         char *end;
 196         index = strtol(value, &end, 10);
 197         if (value + strlen(value) == end)
 198             return true;
 199     } else if (value[1] == '\0') {
 200         index = 0;
 201         return true;
 202     }
 203
 204     return false;
 205 }
 206 /* }}} */
 207
 208 /* JavaScript *ify {{{ */
 209 void CYStringify(std::ostringstream &str, const char *data, size_t size) {
 210     unsigned quot(0), apos(0);
 211     for (const char *value(data), *end(data + size); value != end; ++value)
 212         if (*value == '"')
 213             ++quot;
 214         else if (*value == '\'')
 215             ++apos;
 216
 217     bool single(quot > apos);
 218
 219     str << (single ? '\'' : '"');
 220
 221     for (const char *value(data), *end(data + size); value != end; ++value)
 222         switch (*value) {
 223             case '\\': str << "\\\\"; break;
 224             case '\b': str << "\\b"; break;
 225             case '\f': str << "\\f"; break;
 226             case '\n': str << "\\n"; break;
 227             case '\r': str << "\\r"; break;
 228             case '\t': str << "\\t"; break;
 229             case '\v': str << "\\v"; break;
 230
 231             case '"':
 232                 if (!single)
 233                     str << "\\\"";
 234                 else goto simple;
 235             break;
 236
 237             case '\'':
 238                 if (single)
 239                     str << "\\'";
 240                 else goto simple;
 241             break;
 242
 243             default:
 244                 if (*value < 0x20 || *value >= 0x7f)
 245                     str << "\\x" << std::setbase(16) << std::setw(2) << std::setfill('0') << unsigned(*value);
 246                 else simple:
 247                     str << *value;
 248         }
 249
 250     str << (single ? '\'' : '"');
 251 }
 252
 253 void CYNumerify(std::ostringstream &str, double value) {
 254     char string[32];
 255     // XXX: I want this to print 1e3 rather than 1000
 256     sprintf(string, "%.17g", value);
 257     str << string;
 258 }
 259
 260 bool CYIsKey(CYUTF8String value) {
 261     const char *data(value.data);
 262     size_t size(value.size);
 263
 264     if (size == 0)
 265         return false;
 266
 267     if (DigitRange_[data[0]]) {
 268         size_t index(CYGetIndex(value));
 269         if (index == _not(size_t))
 270             return false;
 271     } else {
 272         if (!WordStartRange_[data[0]])
 273             return false;
 274         for (size_t i(1); i != size; ++i)
 275             if (!WordEndRange_[data[i]])
 276                 return false;
 277     }
 278
 279     return true;
 280 }
 281 /* }}} */
 282
 283 static JSGlobalContextRef Context_;
 284 static JSObjectRef System_;
 285
 286 static JSClassRef Functor_;
 287 static JSClassRef Pointer_;
 288 static JSClassRef Runtime_;
 289 static JSClassRef Struct_;
 290
 291 static JSStringRef Result_;
 292
 293 JSObjectRef Array_;
 294 JSObjectRef Error_;
 295 JSObjectRef Function_;
 296 JSObjectRef String_;
 297
 298 JSStringRef length_;
 299 JSStringRef message_;
 300 JSStringRef name_;
 301 JSStringRef prototype_;
 302 JSStringRef toCYON_;
 303 JSStringRef toJSON_;
 304
 305 JSObjectRef Object_prototype_;
 306 JSObjectRef Function_prototype_;
 307
 308 JSObjectRef Array_prototype_;
 309 JSObjectRef Array_pop_;
 310 JSObjectRef Array_push_;
 311 JSObjectRef Array_splice_;
 312
 313 sqlite3 *Bridge_;
 314
 315 void CYFinalize(JSObjectRef object) {
 316     delete reinterpret_cast<CYData *>(JSObjectGetPrivate(object));
 317 }
 318
 319 struct CStringMapLess :
 320     std::binary_function<const char *, const char *, bool>
 321 {
 322     _finline bool operator ()(const char *lhs, const char *rhs) const {
 323         return strcmp(lhs, rhs) < 0;
 324     }
 325 };
 326
 327 void Structor_(apr_pool_t *pool, const char *name, const char *types, sig::Type *&type) {
 328     if (name == NULL)
 329         return;
 330
 331     sqlite3_stmt *statement;
 332
 333     _sqlcall(sqlite3_prepare(Bridge_,
 334         "select "
 335             "\"bridge\".\"mode\", "
 336             "\"bridge\".\"value\" "
 337         "from \"bridge\" "
 338         "where"
 339             " \"bridge\".\"mode\" in (3, 4) and"
 340             " \"bridge\".\"name\" = ?"
 341         " limit 1"
 342     , -1, &statement, NULL));
 343
 344     _sqlcall(sqlite3_bind_text(statement, 1, name, -1, SQLITE_STATIC));
 345
 346     int mode;
 347     const char *value;
 348
 349     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE) {
 350         mode = -1;
 351         value = NULL;
 352     } else {
 353         mode = sqlite3_column_int(statement, 0);
 354         value = sqlite3_column_pooled(pool, statement, 1);
 355     }
 356
 357     _sqlcall(sqlite3_finalize(statement));
 358
 359     switch (mode) {
 360         default:
 361             _assert(false);
 362         case -1:
 363             break;
 364
 365         case 3: {
 366             sig::Parse(pool, &type->data.signature, value, &Structor_);
 367         } break;
 368
 369         case 4: {
 370             sig::Signature signature;
 371             sig::Parse(pool, &signature, value, &Structor_);
 372             type = signature.elements[0].type;
 373         } break;
 374     }
 375 }
 376
 377 JSClassRef Type_privateData::Class_;
 378
 379 struct Pointer :
 380     CYOwned
 381 {
 382     Type_privateData *type_;
 383
 384     Pointer(void *value, JSContextRef context, JSObjectRef owner, sig::Type *type) :
 385         CYOwned(value, context, owner),
 386         type_(new(pool_) Type_privateData(type))
 387     {
 388     }
 389 };
 390
 391 struct Struct_privateData :
 392     CYOwned
 393 {
 394     Type_privateData *type_;
 395
 396     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 397         CYOwned(NULL, context, owner)
 398     {
 399     }
 400 };
 401
 402 typedef std::map<const char *, Type_privateData *, CStringMapLess> TypeMap;
 403 static TypeMap Types_;
 404
 405 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 406     Struct_privateData *internal(new Struct_privateData(context, owner));
 407     apr_pool_t *pool(internal->pool_);
 408     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 409     internal->type_ = typical;
 410
 411     if (owner != NULL)
 412         internal->value_ = data;
 413     else {
 414         size_t size(typical->GetFFI()->size);
 415         void *copy(apr_palloc(internal->pool_, size));
 416         memcpy(copy, data, size);
 417         internal->value_ = copy;
 418     }
 419
 420     return JSObjectMake(context, Struct_, internal);
 421 }
 422
 423 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 424     return JSValueMakeBoolean(context, value);
 425 }
 426
 427 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 428     return JSValueMakeNumber(context, value);
 429 }
 430
 431 #define CYCastJSValue_(Type_) \
 432     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 433         return JSValueMakeNumber(context, static_cast<double>(value)); \
 434     }
 435
 436 CYCastJSValue_(int)
 437 CYCastJSValue_(unsigned int)
 438 CYCastJSValue_(long int)
 439 CYCastJSValue_(long unsigned int)
 440 CYCastJSValue_(long long int)
 441 CYCastJSValue_(long long unsigned int)
 442
 443 JSValueRef CYJSUndefined(JSContextRef context) {
 444     return JSValueMakeUndefined(context);
 445 }
 446
 447 double CYCastDouble(const char *value, size_t size) {
 448     char *end;
 449     double number(strtod(value, &end));
 450     if (end != value + size)
 451         return NAN;
 452     return number;
 453 }
 454
 455 double CYCastDouble(const char *value) {
 456     return CYCastDouble(value, strlen(value));
 457 }
 458
 459 double CYCastDouble(JSContextRef context, JSValueRef value) {
 460     JSValueRef exception(NULL);
 461     double number(JSValueToNumber(context, value, &exception));
 462     CYThrow(context, exception);
 463     return number;
 464 }
 465
 466 bool CYCastBool(JSContextRef context, JSValueRef value) {
 467     return JSValueToBoolean(context, value);
 468 }
 469
 470 JSValueRef CYJSNull(JSContextRef context) {
 471     return JSValueMakeNull(context);
 472 }
 473
 474 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 475     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 476 }
 477
 478 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 479     return CYCastJSValue(context, CYJSString(value));
 480 }
 481
 482 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 483     JSValueRef exception(NULL);
 484     JSObjectRef object(JSValueToObject(context, value, &exception));
 485     CYThrow(context, exception);
 486     return object;
 487 }
 488
 489 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, JSValueRef arguments[]) {
 490     JSValueRef exception(NULL);
 491     JSValueRef value(JSObjectCallAsFunction(context, function, _this, count, arguments, &exception));
 492     CYThrow(context, exception);
 493     return value;
 494 }
 495
 496 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 497     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 498 }
 499
 500 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 501     if (count == 0)
 502         printf("\n");
 503     else {
 504         CYPool pool;
 505         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 506     }
 507
 508     return CYJSUndefined(context);
 509 } CYCatch }
 510
 511 static size_t Nonce_(0);
 512
 513 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 514     CYPool pool;
 515     const char *name(apr_psprintf(pool, "%s%zu", CYPoolCString(pool, context, arguments[0]), Nonce_++));
 516     return CYCastJSValue(context, name);
 517 }
 518
 519 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 520     JSGarbageCollect(context);
 521     return CYJSUndefined(context);
 522 }
 523
 524 const char *CYPoolCCYON(apr_pool_t *pool, JSContextRef context, JSValueRef value, JSValueRef *exception) { CYTry {
 525     switch (JSType type = JSValueGetType(context, value)) {
 526         case kJSTypeUndefined:
 527             return "undefined";
 528         case kJSTypeNull:
 529             return "null";
 530         case kJSTypeBoolean:
 531             return CYCastBool(context, value) ? "true" : "false";
 532
 533         case kJSTypeNumber: {
 534             std::ostringstream str;
 535             CYNumerify(str, CYCastDouble(context, value));
 536             std::string value(str.str());
 537             return apr_pstrmemdup(pool, value.c_str(), value.size());
 538         } break;
 539
 540         case kJSTypeString: {
 541             std::ostringstream str;
 542             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 543             CYStringify(str, string.data, string.size);
 544             std::string value(str.str());
 545             return apr_pstrmemdup(pool, value.c_str(), value.size());
 546         } break;
 547
 548         case kJSTypeObject:
 549             return CYPoolCCYON(pool, context, (JSObjectRef) value);
 550         default:
 551             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 552     }
 553 } CYCatch }
 554
 555 const char *CYPoolCCYON(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 556     JSValueRef exception(NULL);
 557     const char *cyon(CYPoolCCYON(pool, context, value, &exception));
 558     CYThrow(context, exception);
 559     return cyon;
 560 }
 561
 562 const char *CYPoolCCYON(apr_pool_t *pool, JSContextRef context, JSObjectRef object) {
 563     JSValueRef toCYON(CYGetProperty(context, object, toCYON_));
 564     if (CYIsCallable(context, toCYON)) {
 565         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 0, NULL));
 566         return CYPoolCString(pool, context, value);
 567     }
 568
 569     JSValueRef toJSON(CYGetProperty(context, object, toJSON_));
 570     if (CYIsCallable(context, toJSON)) {
 571         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 572         JSValueRef exception(NULL);
 573         const char *cyon(CYPoolCCYON(pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), &exception));
 574         CYThrow(context, exception);
 575         return cyon;
 576     }
 577
 578     std::ostringstream str;
 579
 580     str << '{';
 581
 582     // XXX: this is, sadly, going to leak
 583     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 584
 585     bool comma(false);
 586
 587     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 588         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 589         JSValueRef value(CYGetProperty(context, object, name));
 590
 591         if (comma)
 592             str << ',';
 593         else
 594             comma = true;
 595
 596         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 597         if (CYIsKey(string))
 598             str << string.data;
 599         else
 600             CYStringify(str, string.data, string.size);
 601
 602         str << ':' << CYPoolCCYON(pool, context, value);
 603     }
 604
 605     str << '}';
 606
 607     JSPropertyNameArrayRelease(names);
 608
 609     std::string string(str.str());
 610     return apr_pstrmemdup(pool, string.c_str(), string.size());
 611 }
 612
 613 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 614     CYPool pool;
 615     std::ostringstream str;
 616
 617     str << '[';
 618
 619     JSValueRef length(CYGetProperty(context, _this, length_));
 620     bool comma(false);
 621
 622     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 623         JSValueRef value(CYGetProperty(context, _this, index));
 624
 625         if (comma)
 626             str << ',';
 627         else
 628             comma = true;
 629
 630         if (!JSValueIsUndefined(context, value))
 631             str << CYPoolCCYON(pool, context, value);
 632         else {
 633             str << ',';
 634             comma = false;
 635         }
 636     }
 637
 638     str << ']';
 639
 640     std::string value(str.str());
 641     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 642 } CYCatch }
 643
 644 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 645     Pointer *internal(new Pointer(pointer, context, owner, type));
 646     return JSObjectMake(context, Pointer_, internal);
 647 }
 648
 649 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const char *type) {
 650     cy::Functor *internal(new cy::Functor(type, function));
 651     return JSObjectMake(context, Functor_, internal);
 652 }
 653
 654 static bool CYGetOffset(apr_pool_t *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) {
 659     switch (JSValueGetType(context, value)) {
 660         case kJSTypeNull:
 661             return NULL;
 662         /*case kJSTypeObject:
 663             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 664                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate((JSObjectRef) value)));
 665                 return internal->value_;
 666             }*/
 667         default:
 668             double number(CYCastDouble(context, value));
 669             if (std::isnan(number))
 670                 throw CYJSError(context, "cannot convert value to pointer");
 671             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 672     }
 673 }
 674
 675 void CYPoolFFI(apr_pool_t *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 676     switch (type->primitive) {
 677         case sig::boolean_P:
 678             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 679         break;
 680
 681 #define CYPoolFFI_(primitive, native) \
 682         case sig::primitive ## _P: \
 683             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 684         break;
 685
 686         CYPoolFFI_(uchar, unsigned char)
 687         CYPoolFFI_(char, char)
 688         CYPoolFFI_(ushort, unsigned short)
 689         CYPoolFFI_(short, short)
 690         CYPoolFFI_(ulong, unsigned long)
 691         CYPoolFFI_(long, long)
 692         CYPoolFFI_(uint, unsigned int)
 693         CYPoolFFI_(int, int)
 694         CYPoolFFI_(ulonglong, unsigned long long)
 695         CYPoolFFI_(longlong, long long)
 696         CYPoolFFI_(float, float)
 697         CYPoolFFI_(double, double)
 698
 699         case sig::pointer_P:
 700             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 701         break;
 702
 703         case sig::string_P:
 704             *reinterpret_cast<const char **>(data) = CYPoolCString(pool, context, value);
 705         break;
 706
 707         case sig::struct_P: {
 708             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 709             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 710             for (size_t index(0); index != type->data.signature.count; ++index) {
 711                 sig::Element *element(&type->data.signature.elements[index]);
 712                 ffi_type *field(ffi->elements[index]);
 713
 714                 JSValueRef rhs;
 715                 if (aggregate == NULL)
 716                     rhs = value;
 717                 else {
 718                     rhs = CYGetProperty(context, aggregate, index);
 719                     if (JSValueIsUndefined(context, rhs)) {
 720                         if (element->name != NULL)
 721                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 722                         else
 723                             goto undefined;
 724                         if (JSValueIsUndefined(context, rhs)) undefined:
 725                             throw CYJSError(context, "unable to extract structure value");
 726                     }
 727                 }
 728
 729                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 730                 // XXX: alignment?
 731                 base += field->size;
 732             }
 733         } break;
 734
 735         case sig::void_P:
 736         break;
 737
 738         default:
 739             if (hooks_ != NULL && hooks_->PoolFFI != NULL)
 740                 if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
 741                     return;
 742
 743             fprintf(stderr, "CYPoolFFI(%c)\n", type->primitive);
 744             _assert(false);
 745     }
 746 }
 747
 748 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 749     switch (type->primitive) {
 750         case sig::boolean_P:
 751             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 752
 753 #define CYFromFFI_(primitive, native) \
 754         case sig::primitive ## _P: \
 755             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 756
 757         CYFromFFI_(uchar, unsigned char)
 758         CYFromFFI_(char, char)
 759         CYFromFFI_(ushort, unsigned short)
 760         CYFromFFI_(short, short)
 761         CYFromFFI_(ulong, unsigned long)
 762         CYFromFFI_(long, long)
 763         CYFromFFI_(uint, unsigned int)
 764         CYFromFFI_(int, int)
 765         CYFromFFI_(ulonglong, unsigned long long)
 766         CYFromFFI_(longlong, long long)
 767         CYFromFFI_(float, float)
 768         CYFromFFI_(double, double)
 769
 770         case sig::pointer_P:
 771             if (void *pointer = *reinterpret_cast<void **>(data))
 772                 return CYMakePointer(context, pointer, type->data.data.type, ffi, owner);
 773             else goto null;
 774
 775         case sig::string_P:
 776             if (char *utf8 = *reinterpret_cast<char **>(data))
 777                 return CYCastJSValue(context, utf8);
 778             else goto null;
 779
 780         case sig::struct_P:
 781             return CYMakeStruct(context, data, type, ffi, owner);
 782         case sig::void_P:
 783             return CYJSUndefined(context);
 784
 785         null:
 786             return CYJSNull(context);
 787         default:
 788             if (hooks_ != NULL && hooks_->FromFFI != NULL)
 789                 if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
 790                     return value;
 791
 792             fprintf(stderr, "CYFromFFI(%c)\n", type->primitive);
 793             _assert(false);
 794     }
 795 }
 796
 797 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 798     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 799
 800     JSContextRef context(internal->context_);
 801
 802     size_t count(internal->cif_.nargs);
 803     JSValueRef values[count];
 804
 805     for (size_t index(0); index != count; ++index)
 806         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 807
 808     JSValueRef value(CYCallAsFunction(context, internal->function_, NULL, count, values));
 809     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 810 }
 811
 812 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const char *type, void (*callback)(ffi_cif *, void *, void **, void *)) {
 813     // XXX: in case of exceptions this will leak
 814     // XXX: in point of fact, this may /need/ to leak :(
 815     Closure_privateData *internal(new Closure_privateData(CYGetJSContext(), function, type));
 816
 817     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 818         NULL, sizeof(ffi_closure),
 819         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 820         -1, 0
 821     )));
 822
 823     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 824     _assert(status == FFI_OK);
 825
 826     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 827
 828     internal->value_ = closure;
 829
 830     return internal;
 831 }
 832
 833 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const char *type) {
 834     Closure_privateData *internal(CYMakeFunctor_(context, function, type, &FunctionClosure_));
 835     return JSObjectMake(context, Functor_, internal);
 836 }
 837
 838 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const char *type) {
 839     JSValueRef exception(NULL);
 840     bool function(JSValueIsInstanceOfConstructor(context, value, Function_, &exception));
 841     CYThrow(context, exception);
 842
 843     if (function) {
 844         JSObjectRef function(CYCastJSObject(context, value));
 845         return CYMakeFunctor(context, function, type);
 846     } else {
 847         void (*function)()(CYCastPointer<void (*)()>(context, value));
 848         return CYMakeFunctor(context, function, type);
 849     }
 850 }
 851
 852 static bool Index_(apr_pool_t *pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 853     Type_privateData *typical(internal->type_);
 854     sig::Type *type(typical->type_);
 855     if (type == NULL)
 856         return false;
 857
 858     const char *name(CYPoolCString(pool, context, property));
 859     size_t length(strlen(name));
 860     double number(CYCastDouble(name, length));
 861
 862     size_t count(type->data.signature.count);
 863
 864     if (std::isnan(number)) {
 865         if (property == NULL)
 866             return false;
 867
 868         sig::Element *elements(type->data.signature.elements);
 869
 870         for (size_t local(0); local != count; ++local) {
 871             sig::Element *element(&elements[local]);
 872             if (element->name != NULL && strcmp(name, element->name) == 0) {
 873                 index = local;
 874                 goto base;
 875             }
 876         }
 877
 878         return false;
 879     } else {
 880         index = static_cast<ssize_t>(number);
 881         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 882             return false;
 883     }
 884
 885   base:
 886     ffi_type **elements(typical->GetFFI()->elements);
 887
 888     base = reinterpret_cast<uint8_t *>(internal->value_);
 889     for (ssize_t local(0); local != index; ++local)
 890         base += elements[local]->size;
 891
 892     return true;
 893 }
 894
 895 static JSValueRef Pointer_getIndex(JSContextRef context, JSObjectRef object, size_t index, JSValueRef *exception) { CYTry {
 896     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 897     Type_privateData *typical(internal->type_);
 898
 899     ffi_type *ffi(typical->GetFFI());
 900
 901     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 902     base += ffi->size * index;
 903
 904     JSObjectRef owner(internal->GetOwner() ?: object);
 905     return CYFromFFI(context, typical->type_, ffi, base, false, owner);
 906 } CYCatch }
 907
 908 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
 909     CYPool pool;
 910     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 911     Type_privateData *typical(internal->type_);
 912
 913     if (typical->type_ == NULL)
 914         return NULL;
 915
 916     ssize_t offset;
 917     if (!CYGetOffset(pool, context, property, offset))
 918         return NULL;
 919
 920     return Pointer_getIndex(context, object, offset, exception);
 921 }
 922
 923 static JSValueRef Pointer_getProperty_$cyi(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
 924     return Pointer_getIndex(context, object, 0, exception);
 925 }
 926
 927 static bool Pointer_setIndex(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value, JSValueRef *exception) { CYTry {
 928     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 929     Type_privateData *typical(internal->type_);
 930
 931     ffi_type *ffi(typical->GetFFI());
 932
 933     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 934     base += ffi->size * index;
 935
 936     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 937     return true;
 938 } CYCatch }
 939
 940 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) {
 941     CYPool pool;
 942     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 943     Type_privateData *typical(internal->type_);
 944
 945     if (typical->type_ == NULL)
 946         return NULL;
 947
 948     ssize_t offset;
 949     if (!CYGetOffset(pool, context, property, offset))
 950         return NULL;
 951
 952     return Pointer_setIndex(context, object, offset, value, exception);
 953 }
 954
 955 static bool Pointer_setProperty_$cyi(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) {
 956     return Pointer_setIndex(context, object, 0, value, exception);
 957 }
 958
 959 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 960     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 961     Type_privateData *typical(internal->type_);
 962     return CYMakePointer(context, internal->value_, typical->type_, typical->ffi_, _this);
 963 }
 964
 965 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 966     CYPool pool;
 967     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 968     Type_privateData *typical(internal->type_);
 969
 970     ssize_t index;
 971     uint8_t *base;
 972
 973     if (!Index_(pool, context, internal, property, index, base))
 974         return NULL;
 975
 976     JSObjectRef owner(internal->GetOwner() ?: object);
 977
 978     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 979 } CYCatch }
 980
 981 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 982     CYPool pool;
 983     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 984     Type_privateData *typical(internal->type_);
 985
 986     ssize_t index;
 987     uint8_t *base;
 988
 989     if (!Index_(pool, context, internal, property, index, base))
 990         return false;
 991
 992     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 993     return true;
 994 } CYCatch }
 995
 996 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 997     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 998     Type_privateData *typical(internal->type_);
 999     sig::Type *type(typical->type_);
1000
1001     if (type == NULL)
1002         return;
1003
1004     size_t count(type->data.signature.count);
1005     sig::Element *elements(type->data.signature.elements);
1006
1007     char number[32];
1008
1009     for (size_t index(0); index != count; ++index) {
1010         const char *name;
1011         name = elements[index].name;
1012
1013         if (name == NULL) {
1014             sprintf(number, "%lu", index);
1015             name = number;
1016         }
1017
1018         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1019     }
1020 }
1021
1022 JSValueRef CYCallFunction(apr_pool_t *pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, JSValueRef *exception, sig::Signature *signature, ffi_cif *cif, void (*function)()) { CYTry {
1023     if (setups + count != signature->count - 1)
1024         throw CYJSError(context, "incorrect number of arguments to ffi function");
1025
1026     size_t size(setups + count);
1027     void *values[size];
1028     memcpy(values, setup, sizeof(void *) * setups);
1029
1030     for (size_t index(setups); index != size; ++index) {
1031         sig::Element *element(&signature->elements[index + 1]);
1032         ffi_type *ffi(cif->arg_types[index]);
1033         // XXX: alignment?
1034         values[index] = new(pool) uint8_t[ffi->size];
1035         CYPoolFFI(pool, context, element->type, ffi, values[index], arguments[index - setups]);
1036     }
1037
1038     uint8_t value[cif->rtype->size];
1039     ffi_call(cif, function, value, values);
1040
1041     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1042 } CYCatch }
1043
1044 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1045     CYPool pool;
1046     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1047     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, exception, &internal->signature_, &internal->cif_, internal->GetValue());
1048 }
1049
1050 static JSObjectRef CYMakeType(JSContextRef context, const char *type) {
1051     Type_privateData *internal(new Type_privateData(NULL, type));
1052     return JSObjectMake(context, Type_privateData::Class_, internal);
1053 }
1054
1055 static JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1056     Type_privateData *internal(new Type_privateData(type));
1057     return JSObjectMake(context, Type_privateData::Class_, internal);
1058 }
1059
1060 static void *CYCastSymbol(const char *name) {
1061     return dlsym(RTLD_DEFAULT, name);
1062 }
1063
1064 static JSValueRef Runtime_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1065     CYPool pool;
1066     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1067
1068     if (hooks_ != NULL && hooks_->RuntimeProperty != NULL)
1069         if (JSValueRef value = (*hooks_->RuntimeProperty)(context, name))
1070             return value;
1071
1072     sqlite3_stmt *statement;
1073
1074     _sqlcall(sqlite3_prepare(Bridge_,
1075         "select "
1076             "\"bridge\".\"mode\", "
1077             "\"bridge\".\"value\" "
1078         "from \"bridge\" "
1079         "where"
1080             " \"bridge\".\"name\" = ?"
1081         " limit 1"
1082     , -1, &statement, NULL));
1083
1084     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1085
1086     int mode;
1087     const char *value;
1088
1089     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE) {
1090         mode = -1;
1091         value = NULL;
1092     } else {
1093         mode = sqlite3_column_int(statement, 0);
1094         value = sqlite3_column_pooled(pool, statement, 1);
1095     }
1096
1097     _sqlcall(sqlite3_finalize(statement));
1098
1099     switch (mode) {
1100         default:
1101             _assert(false);
1102         case -1:
1103             return NULL;
1104
1105         case 0:
1106             return JSEvaluateScript(CYGetJSContext(), CYJSString(value), NULL, NULL, 0, NULL);
1107         case 1:
1108             return CYMakeFunctor(context, reinterpret_cast<void (*)()>(CYCastSymbol(name.data)), value);
1109
1110         case 2: {
1111             // XXX: this is horrendously inefficient
1112             sig::Signature signature;
1113             sig::Parse(pool, &signature, value, &Structor_);
1114             ffi_cif cif;
1115             sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1116             return CYFromFFI(context, signature.elements[0].type, cif.rtype, CYCastSymbol(name.data));
1117         }
1118
1119         // XXX: implement case 3
1120         case 4:
1121             return CYMakeType(context, value);
1122     }
1123 } CYCatch }
1124
1125 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1126     if (count != 2)
1127         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1128
1129     CYPool pool;
1130
1131     void *value(CYCastPointer<void *>(context, arguments[0]));
1132     const char *type(CYPoolCString(pool, context, arguments[1]));
1133
1134     sig::Signature signature;
1135     sig::Parse(pool, &signature, type, &Structor_);
1136
1137     return CYMakePointer(context, value, signature.elements[0].type, NULL, NULL);
1138 } CYCatch }
1139
1140 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1141     if (count != 1)
1142         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1143     CYPool pool;
1144     const char *type(CYPoolCString(pool, context, arguments[0]));
1145     return CYMakeType(context, type);
1146 } CYCatch }
1147
1148 static JSValueRef Type_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1149     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1150
1151     sig::Type type;
1152
1153     if (JSStringIsEqualToUTF8CString(property, "$cyi")) {
1154         type.primitive = sig::pointer_P;
1155         type.data.data.size = 0;
1156     } else {
1157         CYPool pool;
1158         size_t index(CYGetIndex(pool, context, property));
1159         if (index == _not(size_t))
1160             return NULL;
1161         type.primitive = sig::array_P;
1162         type.data.data.size = index;
1163     }
1164
1165     type.name = NULL;
1166     type.flags = 0;
1167
1168     type.data.data.type = internal->type_;
1169
1170     return CYMakeType(context, &type);
1171 } CYCatch }
1172
1173 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1174     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1175
1176     if (count != 1)
1177         throw CYJSError(context, "incorrect number of arguments to type cast function");
1178     sig::Type *type(internal->type_);
1179     ffi_type *ffi(internal->GetFFI());
1180     // XXX: alignment?
1181     uint8_t value[ffi->size];
1182     CYPool pool;
1183     CYPoolFFI(pool, context, type, ffi, value, arguments[0]);
1184     return CYFromFFI(context, type, ffi, value);
1185 } CYCatch }
1186
1187 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1188     if (count != 0)
1189         throw CYJSError(context, "incorrect number of arguments to type cast function");
1190     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1191
1192     sig::Type *type(internal->type_);
1193     size_t size;
1194
1195     if (type->primitive != sig::array_P)
1196         size = 0;
1197     else {
1198         size = type->data.data.size;
1199         type = type->data.data.type;
1200     }
1201
1202     void *value(malloc(internal->GetFFI()->size));
1203     return CYMakePointer(context, value, type, NULL, NULL);
1204 } CYCatch }
1205
1206 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1207     if (count != 2)
1208         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1209     CYPool pool;
1210     const char *type(CYPoolCString(pool, context, arguments[1]));
1211     return CYMakeFunctor(context, arguments[0], type);
1212 } CYCatch }
1213
1214 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1215     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1216     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1217 } CYCatch }
1218
1219 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1220     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1221 }
1222
1223 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1224 CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1225     char string[32];
1226     sprintf(string, "%p", internal->value_);
1227
1228     return CYCastJSValue(context, string);
1229 } CYCatch }
1230
1231 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1232     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1233     CYPool pool;
1234     const char *type(sig::Unparse(pool, internal->type_));
1235     return CYCastJSValue(context, CYJSString(type));
1236 } CYCatch }
1237
1238 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1239     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1240     CYPool pool;
1241     const char *type(sig::Unparse(pool, internal->type_));
1242     size_t size(strlen(type));
1243     char *cyon(new(pool) char[12 + size + 1]);
1244     memcpy(cyon, "new Type(\"", 10);
1245     cyon[12 + size] = '\0';
1246     cyon[12 + size - 2] = '"';
1247     cyon[12 + size - 1] = ')';
1248     memcpy(cyon + 10, type, size);
1249     return CYCastJSValue(context, CYJSString(cyon));
1250 } CYCatch }
1251
1252 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1253     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1254 }
1255
1256 static JSStaticValue Pointer_staticValues[2] = {
1257     {"$cyi", &Pointer_getProperty_$cyi, &Pointer_setProperty_$cyi, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1258     {NULL, NULL, NULL, 0}
1259 };
1260
1261 static JSStaticFunction Pointer_staticFunctions[4] = {
1262     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1263     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1264     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1265     {NULL, NULL, 0}
1266 };
1267
1268 static JSStaticFunction Struct_staticFunctions[2] = {
1269     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1270     {NULL, NULL, 0}
1271 };
1272
1273 static JSStaticFunction Functor_staticFunctions[4] = {
1274     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1275     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1276     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1277     {NULL, NULL, 0}
1278 };
1279
1280 namespace cy {
1281     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1282 }
1283
1284 static JSStaticFunction Type_staticFunctions[4] = {
1285     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1286     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1287     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1288     {NULL, NULL, 0}
1289 };
1290
1291 void CYSetArgs(int argc, const char *argv[]) {
1292     JSContextRef context(CYGetJSContext());
1293     JSValueRef args[argc];
1294     for (int i(0); i != argc; ++i)
1295         args[i] = CYCastJSValue(context, argv[i]);
1296     JSValueRef exception(NULL);
1297     JSObjectRef array(JSObjectMakeArray(context, argc, args, &exception));
1298     CYThrow(context, exception);
1299     CYSetProperty(context, System_, CYJSString("args"), array);
1300 }
1301
1302 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1303     return JSContextGetGlobalObject(context);
1304 }
1305
1306 const char *CYExecute(apr_pool_t *pool, const char *code) {
1307     JSContextRef context(CYGetJSContext());
1308     JSValueRef exception(NULL), result;
1309
1310     void *handle;
1311     if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
1312         handle = (*hooks_->ExecuteStart)();
1313     else
1314         handle = NULL;
1315
1316     const char *json;
1317
1318     try {
1319         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1320     } catch (const char *error) {
1321         return error;
1322     }
1323
1324     if (exception != NULL) { error:
1325         result = exception;
1326         exception = NULL;
1327     }
1328
1329     if (JSValueIsUndefined(context, result))
1330         return NULL;
1331
1332     try {
1333         json = CYPoolCCYON(pool, context, result, &exception);
1334     } catch (const char *error) {
1335         return error;
1336     }
1337
1338     if (exception != NULL)
1339         goto error;
1340
1341     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1342
1343     if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
1344         (*hooks_->ExecuteEnd)(handle);
1345     return json;
1346 }
1347
1348 static apr_pool_t *Pool_;
1349
1350 static bool initialized_;
1351
1352 void CYInitialize() {
1353     if (!initialized_)
1354         initialized_ = true;
1355     else return;
1356
1357     _aprcall(apr_initialize());
1358     _aprcall(apr_pool_create(&Pool_, NULL));
1359     _sqlcall(sqlite3_open("/usr/lib/libcycript.db", &Bridge_));
1360 }
1361
1362 apr_pool_t *CYGetGlobalPool() {
1363     CYInitialize();
1364     return Pool_;
1365 }
1366
1367 void CYThrow(JSContextRef context, JSValueRef value) {
1368     if (value != NULL)
1369         throw CYJSError(context, value);
1370 }
1371
1372 const char *CYJSError::PoolCString(apr_pool_t *pool) const {
1373     return CYPoolCString(pool, context_, value_);
1374 }
1375
1376 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1377     // XXX: what if the context is different?
1378     return value_;
1379 }
1380
1381 void CYThrow(const char *format, ...) {
1382     va_list args;
1383     va_start (args, format);
1384     throw CYPoolError(format, args);
1385     // XXX: does this matter? :(
1386     va_end (args);
1387 }
1388
1389 const char *CYPoolError::PoolCString(apr_pool_t *pool) const {
1390     return apr_pstrdup(pool, message_);
1391 }
1392
1393 CYPoolError::CYPoolError(const char *format, ...) {
1394     va_list args;
1395     va_start (args, format);
1396     message_ = apr_pvsprintf(pool_, format, args);
1397     va_end (args);
1398 }
1399
1400 CYPoolError::CYPoolError(const char *format, va_list args) {
1401     message_ = apr_pvsprintf(pool_, format, args);
1402 }
1403
1404 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1405     return CYCastJSValue(context, message_);
1406 }
1407
1408 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1409     if (context == NULL)
1410         context = CYGetJSContext();
1411
1412     CYPool pool;
1413
1414     va_list args;
1415     va_start (args, format);
1416     const char *message(apr_pvsprintf(pool, format, args));
1417     va_end (args);
1418
1419     JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(message))};
1420
1421     JSValueRef exception(NULL);
1422     value_ = JSObjectCallAsConstructor(context, Error_, 1, arguments, &exception);
1423     CYThrow(context, exception);
1424 }
1425
1426 void CYObjectiveC(JSContextRef context, JSObjectRef global);
1427
1428 JSGlobalContextRef CYGetJSContext() {
1429     CYInitialize();
1430
1431     if (Context_ == NULL) {
1432         JSClassDefinition definition;
1433
1434         definition = kJSClassDefinitionEmpty;
1435         definition.className = "Functor";
1436         definition.staticFunctions = cy::Functor::StaticFunctions;
1437         definition.callAsFunction = &Functor_callAsFunction;
1438         definition.finalize = &CYFinalize;
1439         Functor_ = JSClassCreate(&definition);
1440
1441         definition = kJSClassDefinitionEmpty;
1442         definition.className = "Pointer";
1443         definition.staticValues = Pointer_staticValues;
1444         definition.staticFunctions = Pointer_staticFunctions;
1445         definition.getProperty = &Pointer_getProperty;
1446         definition.setProperty = &Pointer_setProperty;
1447         definition.finalize = &CYFinalize;
1448         Pointer_ = JSClassCreate(&definition);
1449
1450         definition = kJSClassDefinitionEmpty;
1451         definition.className = "Struct";
1452         definition.staticFunctions = Struct_staticFunctions;
1453         definition.getProperty = &Struct_getProperty;
1454         definition.setProperty = &Struct_setProperty;
1455         definition.getPropertyNames = &Struct_getPropertyNames;
1456         definition.finalize = &CYFinalize;
1457         Struct_ = JSClassCreate(&definition);
1458
1459         definition = kJSClassDefinitionEmpty;
1460         definition.className = "Type";
1461         definition.staticFunctions = Type_staticFunctions;
1462         definition.getProperty = &Type_getProperty;
1463         definition.callAsFunction = &Type_callAsFunction;
1464         definition.callAsConstructor = &Type_callAsConstructor;
1465         definition.finalize = &CYFinalize;
1466         Type_privateData::Class_ = JSClassCreate(&definition);
1467
1468         definition = kJSClassDefinitionEmpty;
1469         definition.className = "Runtime";
1470         definition.getProperty = &Runtime_getProperty;
1471         Runtime_ = JSClassCreate(&definition);
1472
1473         definition = kJSClassDefinitionEmpty;
1474         //definition.getProperty = &Global_getProperty;
1475         JSClassRef Global(JSClassCreate(&definition));
1476
1477         JSGlobalContextRef context(JSGlobalContextCreate(Global));
1478         Context_ = context;
1479         JSObjectRef global(CYGetGlobalObject(context));
1480
1481         JSObjectSetPrototype(context, global, JSObjectMake(context, Runtime_, NULL));
1482
1483         Array_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array")));
1484         JSValueProtect(context, Array_);
1485
1486         Error_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error")));
1487         JSValueProtect(context, Error_);
1488
1489         Function_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function")));
1490         JSValueProtect(context, Function_);
1491
1492         String_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String")));
1493         JSValueProtect(context, String_);
1494
1495         length_ = JSStringCreateWithUTF8CString("length");
1496         message_ = JSStringCreateWithUTF8CString("message");
1497         name_ = JSStringCreateWithUTF8CString("name");
1498         prototype_ = JSStringCreateWithUTF8CString("prototype");
1499         toCYON_ = JSStringCreateWithUTF8CString("toCYON");
1500         toJSON_ = JSStringCreateWithUTF8CString("toJSON");
1501
1502         JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1503         Object_prototype_ = CYCastJSObject(context, CYGetProperty(context, Object, prototype_));
1504         JSValueProtect(context, Object_prototype_);
1505
1506         Array_prototype_ = CYCastJSObject(context, CYGetProperty(context, Array_, prototype_));
1507         Array_pop_ = CYCastJSObject(context, CYGetProperty(context, Array_prototype_, CYJSString("pop")));
1508         Array_push_ = CYCastJSObject(context, CYGetProperty(context, Array_prototype_, CYJSString("push")));
1509         Array_splice_ = CYCastJSObject(context, CYGetProperty(context, Array_prototype_, CYJSString("splice")));
1510
1511         CYSetProperty(context, Array_prototype_, toCYON_, JSObjectMakeFunctionWithCallback(context, toCYON_, &Array_callAsFunction_toCYON), kJSPropertyAttributeDontEnum);
1512
1513         JSValueProtect(context, Array_prototype_);
1514         JSValueProtect(context, Array_pop_);
1515         JSValueProtect(context, Array_push_);
1516         JSValueProtect(context, Array_splice_);
1517
1518         JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1519
1520         Function_prototype_ = (JSObjectRef) CYGetProperty(context, Function_, prototype_);
1521         JSValueProtect(context, Function_prototype_);
1522
1523         JSObjectSetPrototype(context, (JSObjectRef) CYGetProperty(context, Functor, prototype_), Function_prototype_);
1524
1525         CYSetProperty(context, global, CYJSString("Functor"), Functor);
1526         CYSetProperty(context, global, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1527         CYSetProperty(context, global, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1528
1529         JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1530         CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1531         CYSetProperty(context, cycript, CYJSString("gc"), JSObjectMakeFunctionWithCallback(context, CYJSString("gc"), &Cycript_gc_callAsFunction));
1532
1533         CYSetProperty(context, global, CYJSString("$cyq"), JSObjectMakeFunctionWithCallback(context, CYJSString("$cyq"), &$cyq));
1534
1535         System_ = JSObjectMake(context, NULL, NULL);
1536         JSValueProtect(context, System_);
1537
1538         CYSetProperty(context, global, CYJSString("system"), System_);
1539         CYSetProperty(context, System_, CYJSString("args"), CYJSNull(context));
1540         //CYSetProperty(context, System_, CYJSString("global"), global);
1541
1542         CYSetProperty(context, System_, CYJSString("print"), JSObjectMakeFunctionWithCallback(context, CYJSString("print"), &System_print));
1543
1544         Result_ = JSStringCreateWithUTF8CString("_");
1545
1546         CYObjectiveC(context, global);
1547     }
1548
1549     return Context_;
1550 }