1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jsapi.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,6451 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +/*
1.11 + * JavaScript API.
1.12 + */
1.13 +
1.14 +#include "jsapi.h"
1.15 +
1.16 +#include "mozilla/FloatingPoint.h"
1.17 +#include "mozilla/PodOperations.h"
1.18 +
1.19 +#include <ctype.h>
1.20 +#include <stdarg.h>
1.21 +#include <string.h>
1.22 +#include <sys/stat.h>
1.23 +
1.24 +#include "jsarray.h"
1.25 +#include "jsatom.h"
1.26 +#include "jsbool.h"
1.27 +#include "jscntxt.h"
1.28 +#include "jsdate.h"
1.29 +#include "jsexn.h"
1.30 +#include "jsfun.h"
1.31 +#include "jsgc.h"
1.32 +#include "jsiter.h"
1.33 +#include "jslock.h"
1.34 +#include "jsmath.h"
1.35 +#include "jsnum.h"
1.36 +#include "jsobj.h"
1.37 +#include "json.h"
1.38 +#include "jsprf.h"
1.39 +#include "jsproxy.h"
1.40 +#include "jsscript.h"
1.41 +#include "jsstr.h"
1.42 +#include "jstypes.h"
1.43 +#include "jsutil.h"
1.44 +#include "jswatchpoint.h"
1.45 +#include "jsweakmap.h"
1.46 +#ifdef JS_THREADSAFE
1.47 +#include "jsworkers.h"
1.48 +#endif
1.49 +#include "jswrapper.h"
1.50 +#include "prmjtime.h"
1.51 +
1.52 +#if ENABLE_YARR_JIT
1.53 +#include "assembler/jit/ExecutableAllocator.h"
1.54 +#endif
1.55 +#include "builtin/Eval.h"
1.56 +#include "builtin/Intl.h"
1.57 +#include "builtin/MapObject.h"
1.58 +#include "builtin/RegExp.h"
1.59 +#ifdef ENABLE_BINARYDATA
1.60 +#include "builtin/SIMD.h"
1.61 +#include "builtin/TypedObject.h"
1.62 +#endif
1.63 +#include "frontend/BytecodeCompiler.h"
1.64 +#include "frontend/FullParseHandler.h" // for JS_BufferIsCompileableUnit
1.65 +#include "frontend/Parser.h" // for JS_BufferIsCompileableUnit
1.66 +#include "gc/Marking.h"
1.67 +#include "jit/AsmJSLink.h"
1.68 +#include "jit/JitCommon.h"
1.69 +#include "js/CharacterEncoding.h"
1.70 +#include "js/SliceBudget.h"
1.71 +#include "js/StructuredClone.h"
1.72 +#if ENABLE_INTL_API
1.73 +#include "unicode/uclean.h"
1.74 +#include "unicode/utypes.h"
1.75 +#endif // ENABLE_INTL_API
1.76 +#include "vm/DateObject.h"
1.77 +#include "vm/Debugger.h"
1.78 +#include "vm/ErrorObject.h"
1.79 +#include "vm/Interpreter.h"
1.80 +#include "vm/NumericConversions.h"
1.81 +#include "vm/RegExpStatics.h"
1.82 +#include "vm/Runtime.h"
1.83 +#include "vm/Shape.h"
1.84 +#include "vm/SharedArrayObject.h"
1.85 +#include "vm/StopIterationObject.h"
1.86 +#include "vm/StringBuffer.h"
1.87 +#include "vm/TypedArrayObject.h"
1.88 +#include "vm/WeakMapObject.h"
1.89 +#include "vm/WrapperObject.h"
1.90 +#include "vm/Xdr.h"
1.91 +#include "yarr/BumpPointerAllocator.h"
1.92 +
1.93 +#include "jsatominlines.h"
1.94 +#include "jsfuninlines.h"
1.95 +#include "jsinferinlines.h"
1.96 +#include "jsscriptinlines.h"
1.97 +
1.98 +#include "vm/Interpreter-inl.h"
1.99 +#include "vm/ObjectImpl-inl.h"
1.100 +#include "vm/String-inl.h"
1.101 +
1.102 +using namespace js;
1.103 +using namespace js::gc;
1.104 +using namespace js::types;
1.105 +
1.106 +using mozilla::Maybe;
1.107 +using mozilla::PodCopy;
1.108 +using mozilla::PodZero;
1.109 +
1.110 +using js::frontend::Parser;
1.111 +
1.112 +#ifdef HAVE_VA_LIST_AS_ARRAY
1.113 +#define JS_ADDRESSOF_VA_LIST(ap) ((va_list *)(ap))
1.114 +#else
1.115 +#define JS_ADDRESSOF_VA_LIST(ap) (&(ap))
1.116 +#endif
1.117 +
1.118 +/* Make sure that jschar is two bytes unsigned integer */
1.119 +JS_STATIC_ASSERT((jschar)-1 > 0);
1.120 +JS_STATIC_ASSERT(sizeof(jschar) == 2);
1.121 +
1.122 +JS_PUBLIC_API(int64_t)
1.123 +JS_Now()
1.124 +{
1.125 + return PRMJ_Now();
1.126 +}
1.127 +
1.128 +JS_PUBLIC_API(jsval)
1.129 +JS_GetNaNValue(JSContext *cx)
1.130 +{
1.131 + return cx->runtime()->NaNValue;
1.132 +}
1.133 +
1.134 +JS_PUBLIC_API(jsval)
1.135 +JS_GetNegativeInfinityValue(JSContext *cx)
1.136 +{
1.137 + return cx->runtime()->negativeInfinityValue;
1.138 +}
1.139 +
1.140 +JS_PUBLIC_API(jsval)
1.141 +JS_GetPositiveInfinityValue(JSContext *cx)
1.142 +{
1.143 + return cx->runtime()->positiveInfinityValue;
1.144 +}
1.145 +
1.146 +JS_PUBLIC_API(jsval)
1.147 +JS_GetEmptyStringValue(JSContext *cx)
1.148 +{
1.149 + return STRING_TO_JSVAL(cx->runtime()->emptyString);
1.150 +}
1.151 +
1.152 +JS_PUBLIC_API(JSString *)
1.153 +JS_GetEmptyString(JSRuntime *rt)
1.154 +{
1.155 + JS_ASSERT(rt->hasContexts());
1.156 + return rt->emptyString;
1.157 +}
1.158 +
1.159 +namespace js {
1.160 +
1.161 +void
1.162 +AssertHeapIsIdle(JSRuntime *rt)
1.163 +{
1.164 + JS_ASSERT(rt->heapState == js::Idle);
1.165 +}
1.166 +
1.167 +void
1.168 +AssertHeapIsIdle(JSContext *cx)
1.169 +{
1.170 + AssertHeapIsIdle(cx->runtime());
1.171 +}
1.172 +
1.173 +}
1.174 +
1.175 +static void
1.176 +AssertHeapIsIdleOrIterating(JSRuntime *rt)
1.177 +{
1.178 + JS_ASSERT(!rt->isHeapCollecting());
1.179 +}
1.180 +
1.181 +static void
1.182 +AssertHeapIsIdleOrIterating(JSContext *cx)
1.183 +{
1.184 + AssertHeapIsIdleOrIterating(cx->runtime());
1.185 +}
1.186 +
1.187 +static void
1.188 +AssertHeapIsIdleOrStringIsFlat(JSContext *cx, JSString *str)
1.189 +{
1.190 + /*
1.191 + * We allow some functions to be called during a GC as long as the argument
1.192 + * is a flat string, since that will not cause allocation.
1.193 + */
1.194 + JS_ASSERT_IF(cx->runtime()->isHeapBusy(), str->isFlat());
1.195 +}
1.196 +
1.197 +JS_PUBLIC_API(bool)
1.198 +JS_ConvertArguments(JSContext *cx, const CallArgs &args, const char *format, ...)
1.199 +{
1.200 + va_list ap;
1.201 + bool ok;
1.202 +
1.203 + AssertHeapIsIdle(cx);
1.204 +
1.205 + va_start(ap, format);
1.206 + ok = JS_ConvertArgumentsVA(cx, args, format, ap);
1.207 + va_end(ap);
1.208 + return ok;
1.209 +}
1.210 +
1.211 +JS_PUBLIC_API(bool)
1.212 +JS_ConvertArgumentsVA(JSContext *cx, const CallArgs &args, const char *format, va_list ap)
1.213 +{
1.214 + unsigned index = 0;
1.215 + bool required;
1.216 + char c;
1.217 + double d;
1.218 + JSString *str;
1.219 + RootedObject obj(cx);
1.220 + RootedValue val(cx);
1.221 +
1.222 + AssertHeapIsIdle(cx);
1.223 + CHECK_REQUEST(cx);
1.224 + assertSameCompartment(cx, args);
1.225 + required = true;
1.226 + while ((c = *format++) != '\0') {
1.227 + if (isspace(c))
1.228 + continue;
1.229 + if (c == '/') {
1.230 + required = false;
1.231 + continue;
1.232 + }
1.233 + if (index == args.length()) {
1.234 + if (required) {
1.235 + if (JSFunction *fun = ReportIfNotFunction(cx, args.calleev())) {
1.236 + char numBuf[12];
1.237 + JS_snprintf(numBuf, sizeof numBuf, "%u", args.length());
1.238 + JSAutoByteString funNameBytes;
1.239 + if (const char *name = GetFunctionNameBytes(cx, fun, &funNameBytes)) {
1.240 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
1.241 + JSMSG_MORE_ARGS_NEEDED,
1.242 + name, numBuf, (args.length() == 1) ? "" : "s");
1.243 + }
1.244 + }
1.245 + return false;
1.246 + }
1.247 + break;
1.248 + }
1.249 + MutableHandleValue arg = args[index++];
1.250 + switch (c) {
1.251 + case 'b':
1.252 + *va_arg(ap, bool *) = ToBoolean(arg);
1.253 + break;
1.254 + case 'c':
1.255 + if (!ToUint16(cx, arg, va_arg(ap, uint16_t *)))
1.256 + return false;
1.257 + break;
1.258 + case 'i':
1.259 + case 'j': // "j" was broken, you should not use it.
1.260 + if (!ToInt32(cx, arg, va_arg(ap, int32_t *)))
1.261 + return false;
1.262 + break;
1.263 + case 'u':
1.264 + if (!ToUint32(cx, arg, va_arg(ap, uint32_t *)))
1.265 + return false;
1.266 + break;
1.267 + case 'd':
1.268 + if (!ToNumber(cx, arg, va_arg(ap, double *)))
1.269 + return false;
1.270 + break;
1.271 + case 'I':
1.272 + if (!ToNumber(cx, arg, &d))
1.273 + return false;
1.274 + *va_arg(ap, double *) = ToInteger(d);
1.275 + break;
1.276 + case 'S':
1.277 + case 'W':
1.278 + str = ToString<CanGC>(cx, arg);
1.279 + if (!str)
1.280 + return false;
1.281 + arg.setString(str);
1.282 + if (c == 'W') {
1.283 + JSFlatString *flat = str->ensureFlat(cx);
1.284 + if (!flat)
1.285 + return false;
1.286 + *va_arg(ap, const jschar **) = flat->chars();
1.287 + } else {
1.288 + *va_arg(ap, JSString **) = str;
1.289 + }
1.290 + break;
1.291 + case 'o':
1.292 + if (arg.isNullOrUndefined()) {
1.293 + obj = nullptr;
1.294 + } else {
1.295 + obj = ToObject(cx, arg);
1.296 + if (!obj)
1.297 + return false;
1.298 + }
1.299 + arg.setObjectOrNull(obj);
1.300 + *va_arg(ap, JSObject **) = obj;
1.301 + break;
1.302 + case 'f':
1.303 + obj = ReportIfNotFunction(cx, arg);
1.304 + if (!obj)
1.305 + return false;
1.306 + arg.setObject(*obj);
1.307 + *va_arg(ap, JSFunction **) = &obj->as<JSFunction>();
1.308 + break;
1.309 + case 'v':
1.310 + *va_arg(ap, jsval *) = arg;
1.311 + break;
1.312 + case '*':
1.313 + break;
1.314 + default:
1.315 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_BAD_CHAR, format);
1.316 + return false;
1.317 + }
1.318 + }
1.319 + return true;
1.320 +}
1.321 +
1.322 +JS_PUBLIC_API(bool)
1.323 +JS_ConvertValue(JSContext *cx, HandleValue value, JSType type, MutableHandleValue vp)
1.324 +{
1.325 + bool ok;
1.326 + RootedObject obj(cx);
1.327 + JSString *str;
1.328 + double d;
1.329 +
1.330 + AssertHeapIsIdle(cx);
1.331 + CHECK_REQUEST(cx);
1.332 + assertSameCompartment(cx, value);
1.333 + switch (type) {
1.334 + case JSTYPE_VOID:
1.335 + vp.setUndefined();
1.336 + ok = true;
1.337 + break;
1.338 + case JSTYPE_OBJECT:
1.339 + if (value.isNullOrUndefined()) {
1.340 + obj.set(nullptr);
1.341 + } else {
1.342 + obj = ToObject(cx, value);
1.343 + if (!obj)
1.344 + return false;
1.345 + }
1.346 + ok = true;
1.347 + break;
1.348 + case JSTYPE_FUNCTION:
1.349 + vp.set(value);
1.350 + obj = ReportIfNotFunction(cx, vp);
1.351 + ok = (obj != nullptr);
1.352 + break;
1.353 + case JSTYPE_STRING:
1.354 + str = ToString<CanGC>(cx, value);
1.355 + ok = (str != nullptr);
1.356 + if (ok)
1.357 + vp.setString(str);
1.358 + break;
1.359 + case JSTYPE_NUMBER:
1.360 + ok = ToNumber(cx, value, &d);
1.361 + if (ok)
1.362 + vp.setDouble(d);
1.363 + break;
1.364 + case JSTYPE_BOOLEAN:
1.365 + vp.setBoolean(ToBoolean(value));
1.366 + return true;
1.367 + default: {
1.368 + char numBuf[12];
1.369 + JS_snprintf(numBuf, sizeof numBuf, "%d", (int)type);
1.370 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_BAD_TYPE, numBuf);
1.371 + ok = false;
1.372 + break;
1.373 + }
1.374 + }
1.375 + return ok;
1.376 +}
1.377 +
1.378 +JS_PUBLIC_API(bool)
1.379 +JS_ValueToObject(JSContext *cx, HandleValue value, MutableHandleObject objp)
1.380 +{
1.381 + AssertHeapIsIdle(cx);
1.382 + CHECK_REQUEST(cx);
1.383 + assertSameCompartment(cx, value);
1.384 + if (value.isNullOrUndefined()) {
1.385 + objp.set(nullptr);
1.386 + return true;
1.387 + }
1.388 + JSObject *obj = ToObject(cx, value);
1.389 + if (!obj)
1.390 + return false;
1.391 + objp.set(obj);
1.392 + return true;
1.393 +}
1.394 +
1.395 +JS_PUBLIC_API(JSFunction *)
1.396 +JS_ValueToFunction(JSContext *cx, HandleValue value)
1.397 +{
1.398 + AssertHeapIsIdle(cx);
1.399 + CHECK_REQUEST(cx);
1.400 + assertSameCompartment(cx, value);
1.401 + return ReportIfNotFunction(cx, value);
1.402 +}
1.403 +
1.404 +JS_PUBLIC_API(JSFunction *)
1.405 +JS_ValueToConstructor(JSContext *cx, HandleValue value)
1.406 +{
1.407 + AssertHeapIsIdle(cx);
1.408 + CHECK_REQUEST(cx);
1.409 + assertSameCompartment(cx, value);
1.410 + return ReportIfNotFunction(cx, value);
1.411 +}
1.412 +
1.413 +JS_PUBLIC_API(JSString *)
1.414 +JS_ValueToSource(JSContext *cx, HandleValue value)
1.415 +{
1.416 + AssertHeapIsIdle(cx);
1.417 + CHECK_REQUEST(cx);
1.418 + assertSameCompartment(cx, value);
1.419 + return ValueToSource(cx, value);
1.420 +}
1.421 +
1.422 +JS_PUBLIC_API(bool)
1.423 +JS_DoubleIsInt32(double d, int32_t *ip)
1.424 +{
1.425 + return mozilla::NumberIsInt32(d, ip);
1.426 +}
1.427 +
1.428 +JS_PUBLIC_API(int32_t)
1.429 +JS_DoubleToInt32(double d)
1.430 +{
1.431 + return ToInt32(d);
1.432 +}
1.433 +
1.434 +JS_PUBLIC_API(uint32_t)
1.435 +JS_DoubleToUint32(double d)
1.436 +{
1.437 + return ToUint32(d);
1.438 +}
1.439 +
1.440 +JS_PUBLIC_API(JSType)
1.441 +JS_TypeOfValue(JSContext *cx, HandleValue value)
1.442 +{
1.443 + AssertHeapIsIdle(cx);
1.444 + CHECK_REQUEST(cx);
1.445 + assertSameCompartment(cx, value);
1.446 + return TypeOfValue(value);
1.447 +}
1.448 +
1.449 +JS_PUBLIC_API(const char *)
1.450 +JS_GetTypeName(JSContext *cx, JSType type)
1.451 +{
1.452 + if ((unsigned)type >= (unsigned)JSTYPE_LIMIT)
1.453 + return nullptr;
1.454 + return TypeStrings[type];
1.455 +}
1.456 +
1.457 +JS_PUBLIC_API(bool)
1.458 +JS_StrictlyEqual(JSContext *cx, jsval value1, jsval value2, bool *equal)
1.459 +{
1.460 + AssertHeapIsIdle(cx);
1.461 + CHECK_REQUEST(cx);
1.462 + assertSameCompartment(cx, value1, value2);
1.463 + bool eq;
1.464 + if (!StrictlyEqual(cx, value1, value2, &eq))
1.465 + return false;
1.466 + *equal = eq;
1.467 + return true;
1.468 +}
1.469 +
1.470 +JS_PUBLIC_API(bool)
1.471 +JS_LooselyEqual(JSContext *cx, HandleValue value1, HandleValue value2, bool *equal)
1.472 +{
1.473 + AssertHeapIsIdle(cx);
1.474 + CHECK_REQUEST(cx);
1.475 + assertSameCompartment(cx, value1, value2);
1.476 + JS_ASSERT(equal);
1.477 + return LooselyEqual(cx, value1, value2, equal);
1.478 +}
1.479 +
1.480 +JS_PUBLIC_API(bool)
1.481 +JS_SameValue(JSContext *cx, jsval value1, jsval value2, bool *same)
1.482 +{
1.483 + AssertHeapIsIdle(cx);
1.484 + CHECK_REQUEST(cx);
1.485 + assertSameCompartment(cx, value1, value2);
1.486 + bool s;
1.487 + if (!SameValue(cx, value1, value2, &s))
1.488 + return false;
1.489 + *same = s;
1.490 + return true;
1.491 +}
1.492 +
1.493 +JS_PUBLIC_API(bool)
1.494 +JS_IsBuiltinEvalFunction(JSFunction *fun)
1.495 +{
1.496 + return IsAnyBuiltinEval(fun);
1.497 +}
1.498 +
1.499 +JS_PUBLIC_API(bool)
1.500 +JS_IsBuiltinFunctionConstructor(JSFunction *fun)
1.501 +{
1.502 + return fun->isBuiltinFunctionConstructor();
1.503 +}
1.504 +
1.505 +/************************************************************************/
1.506 +
1.507 +/*
1.508 + * SpiderMonkey's initialization status is tracked here, and it controls things
1.509 + * that should happen only once across all runtimes. It's an API requirement
1.510 + * that JS_Init (and JS_ShutDown, if called) be called in a thread-aware
1.511 + * manner, so this variable doesn't need to be atomic.
1.512 + *
1.513 + * The only reason at present for the restriction that you can't call
1.514 + * JS_Init/stuff/JS_ShutDown multiple times is the Windows PRMJ NowInit
1.515 + * initialization code, which uses PR_CallOnce to initialize the PRMJ_Now
1.516 + * subsystem. (For reinitialization to be permitted, we'd need to "reset" the
1.517 + * called-once status -- doable, but more trouble than it's worth now.)
1.518 + * Initializing that subsystem from JS_Init eliminates the problem, but
1.519 + * initialization can take a comparatively long time (15ms or so), so we
1.520 + * really don't want to do it in JS_Init, and we really do want to do it only
1.521 + * when PRMJ_Now is eventually called.
1.522 + */
1.523 +enum InitState { Uninitialized, Running, ShutDown };
1.524 +static InitState jsInitState = Uninitialized;
1.525 +
1.526 +#ifdef DEBUG
1.527 +static void
1.528 +CheckMessageNumbering()
1.529 +{
1.530 + // Assert that the numbers associated with the error names in js.msg are
1.531 + // monotonically increasing. It's not a compile-time check, but it's
1.532 + // better than nothing.
1.533 + int errorNumber = 0;
1.534 +# define MSG_DEF(name, number, count, exception, format) \
1.535 + JS_ASSERT(name == errorNumber++);
1.536 +# include "js.msg"
1.537 +# undef MSG_DEF
1.538 +}
1.539 +
1.540 +static unsigned
1.541 +MessageParameterCount(const char *format)
1.542 +{
1.543 + unsigned numfmtspecs = 0;
1.544 + for (const char *fmt = format; *fmt != '\0'; fmt++) {
1.545 + if (*fmt == '{' && isdigit(fmt[1]))
1.546 + ++numfmtspecs;
1.547 + }
1.548 + return numfmtspecs;
1.549 +}
1.550 +
1.551 +static void
1.552 +CheckMessageParameterCounts()
1.553 +{
1.554 + // Assert that each message format has the correct number of braced
1.555 + // parameters.
1.556 +# define MSG_DEF(name, number, count, exception, format) \
1.557 + JS_BEGIN_MACRO \
1.558 + JS_ASSERT(MessageParameterCount(format) == count); \
1.559 + JS_END_MACRO;
1.560 +# include "js.msg"
1.561 +# undef MSG_DEF
1.562 +}
1.563 +#endif /* DEBUG */
1.564 +
1.565 +JS_PUBLIC_API(bool)
1.566 +JS_Init(void)
1.567 +{
1.568 + MOZ_ASSERT(jsInitState == Uninitialized,
1.569 + "must call JS_Init once before any JSAPI operation except "
1.570 + "JS_SetICUMemoryFunctions");
1.571 + MOZ_ASSERT(!JSRuntime::hasLiveRuntimes(),
1.572 + "how do we have live runtimes before JS_Init?");
1.573 +
1.574 +#ifdef DEBUG
1.575 + CheckMessageNumbering();
1.576 + CheckMessageParameterCounts();
1.577 +#endif
1.578 +
1.579 + using js::TlsPerThreadData;
1.580 + if (!TlsPerThreadData.initialized() && !TlsPerThreadData.init())
1.581 + return false;
1.582 +
1.583 +#if defined(JS_ION)
1.584 + if (!jit::InitializeIon())
1.585 + return false;
1.586 +#endif
1.587 +
1.588 + if (!ForkJoinContext::initialize())
1.589 + return false;
1.590 +
1.591 +#if EXPOSE_INTL_API
1.592 + UErrorCode err = U_ZERO_ERROR;
1.593 + u_init(&err);
1.594 + if (U_FAILURE(err))
1.595 + return false;
1.596 +#endif // EXPOSE_INTL_API
1.597 +
1.598 + jsInitState = Running;
1.599 + return true;
1.600 +}
1.601 +
1.602 +JS_PUBLIC_API(void)
1.603 +JS_ShutDown(void)
1.604 +{
1.605 + MOZ_ASSERT(jsInitState == Running,
1.606 + "JS_ShutDown must only be called after JS_Init and can't race with it");
1.607 +#ifdef DEBUG
1.608 + if (JSRuntime::hasLiveRuntimes()) {
1.609 + // Gecko is too buggy to assert this just yet.
1.610 + fprintf(stderr,
1.611 + "WARNING: YOU ARE LEAKING THE WORLD (at least one JSRuntime "
1.612 + "and everything alive inside it, that is) AT JS_ShutDown "
1.613 + "TIME. FIX THIS!\n");
1.614 + }
1.615 +#endif
1.616 +
1.617 +#ifdef JS_THREADSAFE
1.618 + WorkerThreadState().finish();
1.619 +#endif
1.620 +
1.621 + PRMJ_NowShutdown();
1.622 +
1.623 +#if EXPOSE_INTL_API
1.624 + u_cleanup();
1.625 +#endif // EXPOSE_INTL_API
1.626 +
1.627 + jsInitState = ShutDown;
1.628 +}
1.629 +
1.630 +#ifdef DEBUG
1.631 +JS_FRIEND_API(bool)
1.632 +JS::isGCEnabled()
1.633 +{
1.634 + return !TlsPerThreadData.get()->suppressGC;
1.635 +}
1.636 +#else
1.637 +JS_FRIEND_API(bool) JS::isGCEnabled() { return true; }
1.638 +#endif
1.639 +
1.640 +JS_PUBLIC_API(JSRuntime *)
1.641 +JS_NewRuntime(uint32_t maxbytes, JSUseHelperThreads useHelperThreads, JSRuntime *parentRuntime)
1.642 +{
1.643 + MOZ_ASSERT(jsInitState == Running,
1.644 + "must call JS_Init prior to creating any JSRuntimes");
1.645 +
1.646 + // Any parent runtime should be the topmost parent. This assert
1.647 + // isn't required for correctness, but ensuring that the parent
1.648 + // runtime is not destroyed before this one is more easily done
1.649 + // for the main runtime in the process.
1.650 + JS_ASSERT_IF(parentRuntime, !parentRuntime->parentRuntime);
1.651 +
1.652 + JSRuntime *rt = js_new<JSRuntime>(parentRuntime, useHelperThreads);
1.653 + if (!rt)
1.654 + return nullptr;
1.655 +
1.656 + if (!rt->init(maxbytes)) {
1.657 + JS_DestroyRuntime(rt);
1.658 + return nullptr;
1.659 + }
1.660 +
1.661 + return rt;
1.662 +}
1.663 +
1.664 +JS_PUBLIC_API(void)
1.665 +JS_DestroyRuntime(JSRuntime *rt)
1.666 +{
1.667 + js_delete(rt);
1.668 +}
1.669 +
1.670 +JS_PUBLIC_API(bool)
1.671 +JS_SetICUMemoryFunctions(JS_ICUAllocFn allocFn, JS_ICUReallocFn reallocFn, JS_ICUFreeFn freeFn)
1.672 +{
1.673 + MOZ_ASSERT(jsInitState == Uninitialized,
1.674 + "must call JS_SetICUMemoryFunctions before any other JSAPI "
1.675 + "operation (including JS_Init)");
1.676 +
1.677 +#if EXPOSE_INTL_API
1.678 + UErrorCode status = U_ZERO_ERROR;
1.679 + u_setMemoryFunctions(/* context = */ nullptr, allocFn, reallocFn, freeFn, &status);
1.680 + return U_SUCCESS(status);
1.681 +#else
1.682 + return true;
1.683 +#endif
1.684 +}
1.685 +
1.686 +JS_PUBLIC_API(void *)
1.687 +JS_GetRuntimePrivate(JSRuntime *rt)
1.688 +{
1.689 + return rt->data;
1.690 +}
1.691 +
1.692 +JS_PUBLIC_API(void)
1.693 +JS_SetRuntimePrivate(JSRuntime *rt, void *data)
1.694 +{
1.695 + rt->data = data;
1.696 +}
1.697 +
1.698 +#ifdef JS_THREADSAFE
1.699 +static void
1.700 +StartRequest(JSContext *cx)
1.701 +{
1.702 + JSRuntime *rt = cx->runtime();
1.703 + JS_ASSERT(CurrentThreadCanAccessRuntime(rt));
1.704 +
1.705 + if (rt->requestDepth) {
1.706 + rt->requestDepth++;
1.707 + } else {
1.708 + /* Indicate that a request is running. */
1.709 + rt->requestDepth = 1;
1.710 + rt->triggerActivityCallback(true);
1.711 + }
1.712 +}
1.713 +
1.714 +static void
1.715 +StopRequest(JSContext *cx)
1.716 +{
1.717 + JSRuntime *rt = cx->runtime();
1.718 + JS_ASSERT(CurrentThreadCanAccessRuntime(rt));
1.719 +
1.720 + JS_ASSERT(rt->requestDepth != 0);
1.721 + if (rt->requestDepth != 1) {
1.722 + rt->requestDepth--;
1.723 + } else {
1.724 + rt->conservativeGC.updateForRequestEnd();
1.725 + rt->requestDepth = 0;
1.726 + rt->triggerActivityCallback(false);
1.727 + }
1.728 +}
1.729 +#endif /* JS_THREADSAFE */
1.730 +
1.731 +JS_PUBLIC_API(void)
1.732 +JS_BeginRequest(JSContext *cx)
1.733 +{
1.734 +#ifdef JS_THREADSAFE
1.735 + cx->outstandingRequests++;
1.736 + StartRequest(cx);
1.737 +#endif
1.738 +}
1.739 +
1.740 +JS_PUBLIC_API(void)
1.741 +JS_EndRequest(JSContext *cx)
1.742 +{
1.743 +#ifdef JS_THREADSAFE
1.744 + JS_ASSERT(cx->outstandingRequests != 0);
1.745 + cx->outstandingRequests--;
1.746 + StopRequest(cx);
1.747 +#endif
1.748 +}
1.749 +
1.750 +JS_PUBLIC_API(bool)
1.751 +JS_IsInRequest(JSRuntime *rt)
1.752 +{
1.753 +#ifdef JS_THREADSAFE
1.754 + JS_ASSERT(CurrentThreadCanAccessRuntime(rt));
1.755 + return rt->requestDepth != 0;
1.756 +#else
1.757 + return false;
1.758 +#endif
1.759 +}
1.760 +
1.761 +JS_PUBLIC_API(void)
1.762 +JS_SetContextCallback(JSRuntime *rt, JSContextCallback cxCallback, void *data)
1.763 +{
1.764 + rt->cxCallback = cxCallback;
1.765 + rt->cxCallbackData = data;
1.766 +}
1.767 +
1.768 +JS_PUBLIC_API(JSContext *)
1.769 +JS_NewContext(JSRuntime *rt, size_t stackChunkSize)
1.770 +{
1.771 + return NewContext(rt, stackChunkSize);
1.772 +}
1.773 +
1.774 +JS_PUBLIC_API(void)
1.775 +JS_DestroyContext(JSContext *cx)
1.776 +{
1.777 + JS_ASSERT(!cx->compartment());
1.778 + DestroyContext(cx, DCM_FORCE_GC);
1.779 +}
1.780 +
1.781 +JS_PUBLIC_API(void)
1.782 +JS_DestroyContextNoGC(JSContext *cx)
1.783 +{
1.784 + JS_ASSERT(!cx->compartment());
1.785 + DestroyContext(cx, DCM_NO_GC);
1.786 +}
1.787 +
1.788 +JS_PUBLIC_API(void *)
1.789 +JS_GetContextPrivate(JSContext *cx)
1.790 +{
1.791 + return cx->data;
1.792 +}
1.793 +
1.794 +JS_PUBLIC_API(void)
1.795 +JS_SetContextPrivate(JSContext *cx, void *data)
1.796 +{
1.797 + cx->data = data;
1.798 +}
1.799 +
1.800 +JS_PUBLIC_API(void *)
1.801 +JS_GetSecondContextPrivate(JSContext *cx)
1.802 +{
1.803 + return cx->data2;
1.804 +}
1.805 +
1.806 +JS_PUBLIC_API(void)
1.807 +JS_SetSecondContextPrivate(JSContext *cx, void *data)
1.808 +{
1.809 + cx->data2 = data;
1.810 +}
1.811 +
1.812 +JS_PUBLIC_API(JSRuntime *)
1.813 +JS_GetRuntime(JSContext *cx)
1.814 +{
1.815 + return cx->runtime();
1.816 +}
1.817 +
1.818 +JS_PUBLIC_API(JSRuntime *)
1.819 +JS_GetParentRuntime(JSContext *cx)
1.820 +{
1.821 + JSRuntime *rt = cx->runtime();
1.822 + return rt->parentRuntime ? rt->parentRuntime : rt;
1.823 +}
1.824 +
1.825 +JS_PUBLIC_API(JSContext *)
1.826 +JS_ContextIterator(JSRuntime *rt, JSContext **iterp)
1.827 +{
1.828 + JSContext *cx = *iterp;
1.829 + cx = cx ? cx->getNext() : rt->contextList.getFirst();
1.830 + *iterp = cx;
1.831 + return cx;
1.832 +}
1.833 +
1.834 +JS_PUBLIC_API(JSVersion)
1.835 +JS_GetVersion(JSContext *cx)
1.836 +{
1.837 + return VersionNumber(cx->findVersion());
1.838 +}
1.839 +
1.840 +JS_PUBLIC_API(void)
1.841 +JS_SetVersionForCompartment(JSCompartment *compartment, JSVersion version)
1.842 +{
1.843 + compartment->options().setVersion(version);
1.844 +}
1.845 +
1.846 +static const struct v2smap {
1.847 + JSVersion version;
1.848 + const char *string;
1.849 +} v2smap[] = {
1.850 + {JSVERSION_ECMA_3, "ECMAv3"},
1.851 + {JSVERSION_1_6, "1.6"},
1.852 + {JSVERSION_1_7, "1.7"},
1.853 + {JSVERSION_1_8, "1.8"},
1.854 + {JSVERSION_ECMA_5, "ECMAv5"},
1.855 + {JSVERSION_DEFAULT, js_default_str},
1.856 + {JSVERSION_DEFAULT, "1.0"},
1.857 + {JSVERSION_DEFAULT, "1.1"},
1.858 + {JSVERSION_DEFAULT, "1.2"},
1.859 + {JSVERSION_DEFAULT, "1.3"},
1.860 + {JSVERSION_DEFAULT, "1.4"},
1.861 + {JSVERSION_DEFAULT, "1.5"},
1.862 + {JSVERSION_UNKNOWN, nullptr}, /* must be last, nullptr is sentinel */
1.863 +};
1.864 +
1.865 +JS_PUBLIC_API(const char *)
1.866 +JS_VersionToString(JSVersion version)
1.867 +{
1.868 + int i;
1.869 +
1.870 + for (i = 0; v2smap[i].string; i++)
1.871 + if (v2smap[i].version == version)
1.872 + return v2smap[i].string;
1.873 + return "unknown";
1.874 +}
1.875 +
1.876 +JS_PUBLIC_API(JSVersion)
1.877 +JS_StringToVersion(const char *string)
1.878 +{
1.879 + int i;
1.880 +
1.881 + for (i = 0; v2smap[i].string; i++)
1.882 + if (strcmp(v2smap[i].string, string) == 0)
1.883 + return v2smap[i].version;
1.884 + return JSVERSION_UNKNOWN;
1.885 +}
1.886 +
1.887 +JS_PUBLIC_API(JS::RuntimeOptions &)
1.888 +JS::RuntimeOptionsRef(JSRuntime *rt)
1.889 +{
1.890 + return rt->options();
1.891 +}
1.892 +
1.893 +JS_PUBLIC_API(JS::RuntimeOptions &)
1.894 +JS::RuntimeOptionsRef(JSContext *cx)
1.895 +{
1.896 + return cx->runtime()->options();
1.897 +}
1.898 +
1.899 +JS_PUBLIC_API(JS::ContextOptions &)
1.900 +JS::ContextOptionsRef(JSContext *cx)
1.901 +{
1.902 + return cx->options();
1.903 +}
1.904 +
1.905 +JS_PUBLIC_API(const char *)
1.906 +JS_GetImplementationVersion(void)
1.907 +{
1.908 + return "JavaScript-C" MOZILLA_VERSION;
1.909 +}
1.910 +
1.911 +JS_PUBLIC_API(void)
1.912 +JS_SetDestroyCompartmentCallback(JSRuntime *rt, JSDestroyCompartmentCallback callback)
1.913 +{
1.914 + rt->destroyCompartmentCallback = callback;
1.915 +}
1.916 +
1.917 +JS_PUBLIC_API(void)
1.918 +JS_SetDestroyZoneCallback(JSRuntime *rt, JSZoneCallback callback)
1.919 +{
1.920 + rt->destroyZoneCallback = callback;
1.921 +}
1.922 +
1.923 +JS_PUBLIC_API(void)
1.924 +JS_SetSweepZoneCallback(JSRuntime *rt, JSZoneCallback callback)
1.925 +{
1.926 + rt->sweepZoneCallback = callback;
1.927 +}
1.928 +
1.929 +JS_PUBLIC_API(void)
1.930 +JS_SetCompartmentNameCallback(JSRuntime *rt, JSCompartmentNameCallback callback)
1.931 +{
1.932 + rt->compartmentNameCallback = callback;
1.933 +}
1.934 +
1.935 +JS_PUBLIC_API(void)
1.936 +JS_SetWrapObjectCallbacks(JSRuntime *rt, const JSWrapObjectCallbacks *callbacks)
1.937 +{
1.938 + rt->wrapObjectCallbacks = callbacks;
1.939 +}
1.940 +
1.941 +JS_PUBLIC_API(JSCompartment *)
1.942 +JS_EnterCompartment(JSContext *cx, JSObject *target)
1.943 +{
1.944 + AssertHeapIsIdle(cx);
1.945 + CHECK_REQUEST(cx);
1.946 +
1.947 + JSCompartment *oldCompartment = cx->compartment();
1.948 + cx->enterCompartment(target->compartment());
1.949 + return oldCompartment;
1.950 +}
1.951 +
1.952 +JS_PUBLIC_API(JSCompartment *)
1.953 +JS_EnterCompartmentOfScript(JSContext *cx, JSScript *target)
1.954 +{
1.955 + AssertHeapIsIdle(cx);
1.956 + CHECK_REQUEST(cx);
1.957 + GlobalObject &global = target->global();
1.958 + return JS_EnterCompartment(cx, &global);
1.959 +}
1.960 +
1.961 +JS_PUBLIC_API(void)
1.962 +JS_LeaveCompartment(JSContext *cx, JSCompartment *oldCompartment)
1.963 +{
1.964 + AssertHeapIsIdle(cx);
1.965 + CHECK_REQUEST(cx);
1.966 + cx->leaveCompartment(oldCompartment);
1.967 +}
1.968 +
1.969 +JSAutoCompartment::JSAutoCompartment(JSContext *cx, JSObject *target)
1.970 + : cx_(cx),
1.971 + oldCompartment_(cx->compartment())
1.972 +{
1.973 + AssertHeapIsIdleOrIterating(cx_);
1.974 + cx_->enterCompartment(target->compartment());
1.975 +}
1.976 +
1.977 +JSAutoCompartment::JSAutoCompartment(JSContext *cx, JSScript *target)
1.978 + : cx_(cx),
1.979 + oldCompartment_(cx->compartment())
1.980 +{
1.981 + AssertHeapIsIdleOrIterating(cx_);
1.982 + cx_->enterCompartment(target->compartment());
1.983 +}
1.984 +
1.985 +JSAutoCompartment::~JSAutoCompartment()
1.986 +{
1.987 + cx_->leaveCompartment(oldCompartment_);
1.988 +}
1.989 +
1.990 +JSAutoNullCompartment::JSAutoNullCompartment(JSContext *cx)
1.991 + : cx_(cx),
1.992 + oldCompartment_(cx->compartment())
1.993 +{
1.994 + AssertHeapIsIdleOrIterating(cx_);
1.995 + cx_->enterNullCompartment();
1.996 +}
1.997 +
1.998 +JSAutoNullCompartment::~JSAutoNullCompartment()
1.999 +{
1.1000 + cx_->leaveCompartment(oldCompartment_);
1.1001 +}
1.1002 +
1.1003 +JS_PUBLIC_API(void)
1.1004 +JS_SetCompartmentPrivate(JSCompartment *compartment, void *data)
1.1005 +{
1.1006 + compartment->data = data;
1.1007 +}
1.1008 +
1.1009 +JS_PUBLIC_API(void *)
1.1010 +JS_GetCompartmentPrivate(JSCompartment *compartment)
1.1011 +{
1.1012 + return compartment->data;
1.1013 +}
1.1014 +
1.1015 +JS_PUBLIC_API(void)
1.1016 +JS_SetZoneUserData(JS::Zone *zone, void *data)
1.1017 +{
1.1018 + zone->data = data;
1.1019 +}
1.1020 +
1.1021 +JS_PUBLIC_API(void *)
1.1022 +JS_GetZoneUserData(JS::Zone *zone)
1.1023 +{
1.1024 + return zone->data;
1.1025 +}
1.1026 +
1.1027 +JS_PUBLIC_API(bool)
1.1028 +JS_WrapObject(JSContext *cx, MutableHandleObject objp)
1.1029 +{
1.1030 + AssertHeapIsIdle(cx);
1.1031 + CHECK_REQUEST(cx);
1.1032 + if (objp)
1.1033 + JS::ExposeGCThingToActiveJS(objp, JSTRACE_OBJECT);
1.1034 + return cx->compartment()->wrap(cx, objp);
1.1035 +}
1.1036 +
1.1037 +JS_PUBLIC_API(bool)
1.1038 +JS_WrapValue(JSContext *cx, MutableHandleValue vp)
1.1039 +{
1.1040 + AssertHeapIsIdle(cx);
1.1041 + CHECK_REQUEST(cx);
1.1042 + JS::ExposeValueToActiveJS(vp);
1.1043 + return cx->compartment()->wrap(cx, vp);
1.1044 +}
1.1045 +
1.1046 +JS_PUBLIC_API(bool)
1.1047 +JS_WrapId(JSContext *cx, JS::MutableHandleId idp)
1.1048 +{
1.1049 + AssertHeapIsIdle(cx);
1.1050 + CHECK_REQUEST(cx);
1.1051 + jsid id = idp.get();
1.1052 + if (JSID_IS_STRING(id))
1.1053 + JS::ExposeGCThingToActiveJS(JSID_TO_STRING(id), JSTRACE_STRING);
1.1054 + else if (JSID_IS_OBJECT(id))
1.1055 + JS::ExposeGCThingToActiveJS(JSID_TO_OBJECT(id), JSTRACE_OBJECT);
1.1056 + return cx->compartment()->wrapId(cx, idp.address());
1.1057 +}
1.1058 +
1.1059 +/*
1.1060 + * Identity remapping. Not for casual consumers.
1.1061 + *
1.1062 + * Normally, an object's contents and its identity are inextricably linked.
1.1063 + * Identity is determined by the address of the JSObject* in the heap, and
1.1064 + * the contents are what is located at that address. Transplanting allows these
1.1065 + * concepts to be separated through a combination of swapping (exchanging the
1.1066 + * contents of two same-compartment objects) and remapping cross-compartment
1.1067 + * identities by altering wrappers.
1.1068 + *
1.1069 + * The |origobj| argument should be the object whose identity needs to be
1.1070 + * remapped, usually to another compartment. The contents of |origobj| are
1.1071 + * destroyed.
1.1072 + *
1.1073 + * The |target| argument serves two purposes:
1.1074 + *
1.1075 + * First, |target| serves as a hint for the new identity of the object. The new
1.1076 + * identity object will always be in the same compartment as |target|, but
1.1077 + * if that compartment already had an object representing |origobj| (either a
1.1078 + * cross-compartment wrapper for it, or |origobj| itself if the two arguments
1.1079 + * are same-compartment), the existing object is used. Otherwise, |target|
1.1080 + * itself is used. To avoid ambiguity, JS_TransplantObject always returns the
1.1081 + * new identity.
1.1082 + *
1.1083 + * Second, the new identity object's contents will be those of |target|. A swap()
1.1084 + * is used to make this happen if an object other than |target| is used.
1.1085 + *
1.1086 + * We don't have a good way to recover from failure in this function, so
1.1087 + * we intentionally crash instead.
1.1088 + */
1.1089 +
1.1090 +JS_PUBLIC_API(JSObject *)
1.1091 +JS_TransplantObject(JSContext *cx, HandleObject origobj, HandleObject target)
1.1092 +{
1.1093 + AssertHeapIsIdle(cx);
1.1094 + JS_ASSERT(origobj != target);
1.1095 + JS_ASSERT(!origobj->is<CrossCompartmentWrapperObject>());
1.1096 + JS_ASSERT(!target->is<CrossCompartmentWrapperObject>());
1.1097 +
1.1098 + RootedValue origv(cx, ObjectValue(*origobj));
1.1099 + RootedObject newIdentity(cx);
1.1100 +
1.1101 + {
1.1102 + // Scope to make ~AutoMaybeTouchDeadZones do its GC before the return value is on the stack.
1.1103 + AutoMaybeTouchDeadZones agc(cx);
1.1104 + AutoDisableProxyCheck adpc(cx->runtime());
1.1105 +
1.1106 + JSCompartment *destination = target->compartment();
1.1107 +
1.1108 + if (origobj->compartment() == destination) {
1.1109 + // If the original object is in the same compartment as the
1.1110 + // destination, then we know that we won't find a wrapper in the
1.1111 + // destination's cross compartment map and that the same
1.1112 + // object will continue to work.
1.1113 + if (!JSObject::swap(cx, origobj, target))
1.1114 + MOZ_CRASH();
1.1115 + newIdentity = origobj;
1.1116 + } else if (WrapperMap::Ptr p = destination->lookupWrapper(origv)) {
1.1117 + // There might already be a wrapper for the original object in
1.1118 + // the new compartment. If there is, we use its identity and swap
1.1119 + // in the contents of |target|.
1.1120 + newIdentity = &p->value().toObject();
1.1121 +
1.1122 + // When we remove origv from the wrapper map, its wrapper, newIdentity,
1.1123 + // must immediately cease to be a cross-compartment wrapper. Neuter it.
1.1124 + destination->removeWrapper(p);
1.1125 + NukeCrossCompartmentWrapper(cx, newIdentity);
1.1126 +
1.1127 + if (!JSObject::swap(cx, newIdentity, target))
1.1128 + MOZ_CRASH();
1.1129 + } else {
1.1130 + // Otherwise, we use |target| for the new identity object.
1.1131 + newIdentity = target;
1.1132 + }
1.1133 +
1.1134 + // Now, iterate through other scopes looking for references to the
1.1135 + // old object, and update the relevant cross-compartment wrappers.
1.1136 + if (!RemapAllWrappersForObject(cx, origobj, newIdentity))
1.1137 + MOZ_CRASH();
1.1138 +
1.1139 + // Lastly, update the original object to point to the new one.
1.1140 + if (origobj->compartment() != destination) {
1.1141 + RootedObject newIdentityWrapper(cx, newIdentity);
1.1142 + AutoCompartment ac(cx, origobj);
1.1143 + if (!JS_WrapObject(cx, &newIdentityWrapper))
1.1144 + MOZ_CRASH();
1.1145 + JS_ASSERT(Wrapper::wrappedObject(newIdentityWrapper) == newIdentity);
1.1146 + if (!JSObject::swap(cx, origobj, newIdentityWrapper))
1.1147 + MOZ_CRASH();
1.1148 + origobj->compartment()->putWrapper(cx, ObjectValue(*newIdentity), origv);
1.1149 + }
1.1150 + }
1.1151 +
1.1152 + // The new identity object might be one of several things. Return it to avoid
1.1153 + // ambiguity.
1.1154 + return newIdentity;
1.1155 +}
1.1156 +
1.1157 +/*
1.1158 + * Recompute all cross-compartment wrappers for an object, resetting state.
1.1159 + * Gecko uses this to clear Xray wrappers when doing a navigation that reuses
1.1160 + * the inner window and global object.
1.1161 + */
1.1162 +JS_PUBLIC_API(bool)
1.1163 +JS_RefreshCrossCompartmentWrappers(JSContext *cx, HandleObject obj)
1.1164 +{
1.1165 + return RemapAllWrappersForObject(cx, obj, obj);
1.1166 +}
1.1167 +
1.1168 +JS_PUBLIC_API(bool)
1.1169 +JS_InitStandardClasses(JSContext *cx, HandleObject obj)
1.1170 +{
1.1171 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.1172 + AssertHeapIsIdle(cx);
1.1173 + CHECK_REQUEST(cx);
1.1174 +
1.1175 + cx->setDefaultCompartmentObjectIfUnset(obj);
1.1176 + assertSameCompartment(cx, obj);
1.1177 +
1.1178 + Rooted<GlobalObject*> global(cx, &obj->global());
1.1179 + return GlobalObject::initStandardClasses(cx, global);
1.1180 +}
1.1181 +
1.1182 +#define CLASP(name) (&name##Class)
1.1183 +#define OCLASP(name) (&name##Object::class_)
1.1184 +#define TYPED_ARRAY_CLASP(type) (&TypedArrayObject::classes[ScalarTypeDescr::type])
1.1185 +#define EAGER_ATOM(name) NAME_OFFSET(name)
1.1186 +#define EAGER_CLASS_ATOM(name) NAME_OFFSET(name)
1.1187 +
1.1188 +static js::Class DummyClass;
1.1189 +static js::Class SentinelClass;
1.1190 +
1.1191 +typedef struct JSStdName {
1.1192 + size_t atomOffset; /* offset of atom pointer in JSAtomState */
1.1193 + const Class *clasp;
1.1194 + bool isDummy() const { return clasp == &DummyClass; };
1.1195 + bool isSentinel() const { return clasp == &SentinelClass; };
1.1196 +} JSStdName;
1.1197 +
1.1198 +static const JSStdName*
1.1199 +LookupStdName(JSRuntime *rt, HandleString name, const JSStdName *table)
1.1200 +{
1.1201 + MOZ_ASSERT(name->isAtom());
1.1202 + for (unsigned i = 0; !table[i].isSentinel(); i++) {
1.1203 + if (table[i].isDummy())
1.1204 + continue;
1.1205 + JSAtom *atom = AtomStateOffsetToName(*rt->commonNames, table[i].atomOffset);
1.1206 + MOZ_ASSERT(atom);
1.1207 + if (name == atom)
1.1208 + return &table[i];
1.1209 + }
1.1210 +
1.1211 + return nullptr;
1.1212 +}
1.1213 +
1.1214 +/*
1.1215 + * Table of standard classes, indexed by JSProtoKey. For entries where the
1.1216 + * JSProtoKey does not correspond to a class with a meaningful constructor, we
1.1217 + * insert a null entry into the table.
1.1218 + */
1.1219 +#define STD_NAME_ENTRY(name, code, init, clasp) { EAGER_CLASS_ATOM(name), clasp },
1.1220 +#define STD_DUMMY_ENTRY(name, code, init, dummy) { 0, &DummyClass },
1.1221 +static const JSStdName standard_class_names[] = {
1.1222 + JS_FOR_PROTOTYPES(STD_NAME_ENTRY, STD_DUMMY_ENTRY)
1.1223 + { 0, &SentinelClass }
1.1224 +};
1.1225 +
1.1226 +/*
1.1227 + * Table of top-level function and constant names and the init function of the
1.1228 + * corresponding standard class that sets them up.
1.1229 + */
1.1230 +static const JSStdName builtin_property_names[] = {
1.1231 + { EAGER_ATOM(eval), &JSObject::class_ },
1.1232 +
1.1233 + /* Global properties and functions defined by the Number class. */
1.1234 + { EAGER_ATOM(NaN), OCLASP(Number) },
1.1235 + { EAGER_ATOM(Infinity), OCLASP(Number) },
1.1236 + { EAGER_ATOM(isNaN), OCLASP(Number) },
1.1237 + { EAGER_ATOM(isFinite), OCLASP(Number) },
1.1238 + { EAGER_ATOM(parseFloat), OCLASP(Number) },
1.1239 + { EAGER_ATOM(parseInt), OCLASP(Number) },
1.1240 +
1.1241 + /* String global functions. */
1.1242 + { EAGER_ATOM(escape), OCLASP(String) },
1.1243 + { EAGER_ATOM(unescape), OCLASP(String) },
1.1244 + { EAGER_ATOM(decodeURI), OCLASP(String) },
1.1245 + { EAGER_ATOM(encodeURI), OCLASP(String) },
1.1246 + { EAGER_ATOM(decodeURIComponent), OCLASP(String) },
1.1247 + { EAGER_ATOM(encodeURIComponent), OCLASP(String) },
1.1248 +#if JS_HAS_UNEVAL
1.1249 + { EAGER_ATOM(uneval), OCLASP(String) },
1.1250 +#endif
1.1251 +#ifdef ENABLE_BINARYDATA
1.1252 + { EAGER_ATOM(SIMD), OCLASP(SIMD) },
1.1253 + { EAGER_ATOM(TypedObject), OCLASP(TypedObjectModule) },
1.1254 +#endif
1.1255 +
1.1256 + { 0, &SentinelClass }
1.1257 +};
1.1258 +
1.1259 +#undef CLASP
1.1260 +#undef TYPED_ARRAY_CLASP
1.1261 +#undef EAGER_ATOM
1.1262 +#undef EAGER_CLASS_ATOM
1.1263 +#undef EAGER_ATOM_CLASP
1.1264 +
1.1265 +JS_PUBLIC_API(bool)
1.1266 +JS_ResolveStandardClass(JSContext *cx, HandleObject obj, HandleId id, bool *resolved)
1.1267 +{
1.1268 + JSRuntime *rt;
1.1269 + const JSStdName *stdnm;
1.1270 +
1.1271 + AssertHeapIsIdle(cx);
1.1272 + CHECK_REQUEST(cx);
1.1273 + assertSameCompartment(cx, obj, id);
1.1274 +
1.1275 + Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
1.1276 + *resolved = false;
1.1277 +
1.1278 + rt = cx->runtime();
1.1279 + if (!rt->hasContexts() || !JSID_IS_ATOM(id))
1.1280 + return true;
1.1281 +
1.1282 + RootedString idstr(cx, JSID_TO_STRING(id));
1.1283 +
1.1284 + /* Check whether we're resolving 'undefined', and define it if so. */
1.1285 + JSAtom *undefinedAtom = cx->names().undefined;
1.1286 + if (idstr == undefinedAtom) {
1.1287 + *resolved = true;
1.1288 + return JSObject::defineProperty(cx, obj, undefinedAtom->asPropertyName(),
1.1289 + UndefinedHandleValue,
1.1290 + JS_PropertyStub, JS_StrictPropertyStub,
1.1291 + JSPROP_PERMANENT | JSPROP_READONLY);
1.1292 + }
1.1293 +
1.1294 + /* Try for class constructors/prototypes named by well-known atoms. */
1.1295 + stdnm = LookupStdName(rt, idstr, standard_class_names);
1.1296 +
1.1297 + /* Try less frequently used top-level functions and constants. */
1.1298 + if (!stdnm)
1.1299 + stdnm = LookupStdName(rt, idstr, builtin_property_names);
1.1300 +
1.1301 + // If this class is anonymous, then it doesn't exist as a global
1.1302 + // property, so we won't resolve anything.
1.1303 + if (stdnm && !(stdnm->clasp->flags & JSCLASS_IS_ANONYMOUS)) {
1.1304 + JSProtoKey key = JSCLASS_CACHED_PROTO_KEY(stdnm->clasp);
1.1305 + if (!GlobalObject::ensureConstructor(cx, global, key))
1.1306 + return false;
1.1307 +
1.1308 + *resolved = true;
1.1309 + return true;
1.1310 + }
1.1311 +
1.1312 + // There is no such property to resolve. An ordinary resolve hook would
1.1313 + // just return true at this point. But the global object is special in one
1.1314 + // more way: its prototype chain is lazily initialized. That is,
1.1315 + // global->getProto() might be null right now because we haven't created
1.1316 + // Object.prototype yet. Force it now.
1.1317 + if (!global->getOrCreateObjectPrototype(cx))
1.1318 + return false;
1.1319 +
1.1320 + return true;
1.1321 +}
1.1322 +
1.1323 +JS_PUBLIC_API(bool)
1.1324 +JS_EnumerateStandardClasses(JSContext *cx, HandleObject obj)
1.1325 +{
1.1326 + AssertHeapIsIdle(cx);
1.1327 + CHECK_REQUEST(cx);
1.1328 + assertSameCompartment(cx, obj);
1.1329 + MOZ_ASSERT(obj->is<GlobalObject>());
1.1330 + Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
1.1331 + return GlobalObject::initStandardClasses(cx, global);
1.1332 +}
1.1333 +
1.1334 +JS_PUBLIC_API(bool)
1.1335 +JS_GetClassObject(JSContext *cx, JSProtoKey key, MutableHandleObject objp)
1.1336 +{
1.1337 + AssertHeapIsIdle(cx);
1.1338 + CHECK_REQUEST(cx);
1.1339 + return GetBuiltinConstructor(cx, key, objp);
1.1340 +}
1.1341 +
1.1342 +JS_PUBLIC_API(bool)
1.1343 +JS_GetClassPrototype(JSContext *cx, JSProtoKey key, MutableHandleObject objp)
1.1344 +{
1.1345 + AssertHeapIsIdle(cx);
1.1346 + CHECK_REQUEST(cx);
1.1347 + return GetBuiltinPrototype(cx, key, objp);
1.1348 +}
1.1349 +
1.1350 +JS_PUBLIC_API(JSProtoKey)
1.1351 +JS_IdToProtoKey(JSContext *cx, HandleId id)
1.1352 +{
1.1353 + AssertHeapIsIdle(cx);
1.1354 + CHECK_REQUEST(cx);
1.1355 +
1.1356 + if (!JSID_IS_ATOM(id))
1.1357 + return JSProto_Null;
1.1358 + RootedString idstr(cx, JSID_TO_STRING(id));
1.1359 + const JSStdName *stdnm = LookupStdName(cx->runtime(), idstr, standard_class_names);
1.1360 + if (!stdnm)
1.1361 + return JSProto_Null;
1.1362 +
1.1363 + MOZ_ASSERT(MOZ_ARRAY_LENGTH(standard_class_names) == JSProto_LIMIT + 1);
1.1364 + return static_cast<JSProtoKey>(stdnm - standard_class_names);
1.1365 +}
1.1366 +
1.1367 +JS_PUBLIC_API(JSObject *)
1.1368 +JS_GetObjectPrototype(JSContext *cx, HandleObject forObj)
1.1369 +{
1.1370 + CHECK_REQUEST(cx);
1.1371 + assertSameCompartment(cx, forObj);
1.1372 + return forObj->global().getOrCreateObjectPrototype(cx);
1.1373 +}
1.1374 +
1.1375 +JS_PUBLIC_API(JSObject *)
1.1376 +JS_GetFunctionPrototype(JSContext *cx, HandleObject forObj)
1.1377 +{
1.1378 + CHECK_REQUEST(cx);
1.1379 + assertSameCompartment(cx, forObj);
1.1380 + return forObj->global().getOrCreateFunctionPrototype(cx);
1.1381 +}
1.1382 +
1.1383 +JS_PUBLIC_API(JSObject *)
1.1384 +JS_GetArrayPrototype(JSContext *cx, HandleObject forObj)
1.1385 +{
1.1386 + CHECK_REQUEST(cx);
1.1387 + assertSameCompartment(cx, forObj);
1.1388 + Rooted<GlobalObject*> global(cx, &forObj->global());
1.1389 + return GlobalObject::getOrCreateArrayPrototype(cx, global);
1.1390 +}
1.1391 +
1.1392 +JS_PUBLIC_API(JSObject *)
1.1393 +JS_GetGlobalForObject(JSContext *cx, JSObject *obj)
1.1394 +{
1.1395 + AssertHeapIsIdle(cx);
1.1396 + assertSameCompartment(cx, obj);
1.1397 + return &obj->global();
1.1398 +}
1.1399 +
1.1400 +extern JS_PUBLIC_API(bool)
1.1401 +JS_IsGlobalObject(JSObject *obj)
1.1402 +{
1.1403 + return obj->is<GlobalObject>();
1.1404 +}
1.1405 +
1.1406 +JS_PUBLIC_API(JSObject *)
1.1407 +JS_GetGlobalForCompartmentOrNull(JSContext *cx, JSCompartment *c)
1.1408 +{
1.1409 + AssertHeapIsIdleOrIterating(cx);
1.1410 + assertSameCompartment(cx, c);
1.1411 + return c->maybeGlobal();
1.1412 +}
1.1413 +
1.1414 +JS_PUBLIC_API(JSObject *)
1.1415 +JS::CurrentGlobalOrNull(JSContext *cx)
1.1416 +{
1.1417 + AssertHeapIsIdleOrIterating(cx);
1.1418 + CHECK_REQUEST(cx);
1.1419 + if (!cx->compartment())
1.1420 + return nullptr;
1.1421 + return cx->global();
1.1422 +}
1.1423 +
1.1424 +JS_PUBLIC_API(jsval)
1.1425 +JS_ComputeThis(JSContext *cx, jsval *vp)
1.1426 +{
1.1427 + AssertHeapIsIdle(cx);
1.1428 + assertSameCompartment(cx, JSValueArray(vp, 2));
1.1429 + CallReceiver call = CallReceiverFromVp(vp);
1.1430 + if (!BoxNonStrictThis(cx, call))
1.1431 + return JSVAL_NULL;
1.1432 + return call.thisv();
1.1433 +}
1.1434 +
1.1435 +JS_PUBLIC_API(void *)
1.1436 +JS_malloc(JSContext *cx, size_t nbytes)
1.1437 +{
1.1438 + AssertHeapIsIdle(cx);
1.1439 + CHECK_REQUEST(cx);
1.1440 + return cx->malloc_(nbytes);
1.1441 +}
1.1442 +
1.1443 +JS_PUBLIC_API(void *)
1.1444 +JS_realloc(JSContext *cx, void *p, size_t nbytes)
1.1445 +{
1.1446 + AssertHeapIsIdle(cx);
1.1447 + CHECK_REQUEST(cx);
1.1448 + return cx->realloc_(p, nbytes);
1.1449 +}
1.1450 +
1.1451 +JS_PUBLIC_API(void)
1.1452 +JS_free(JSContext *cx, void *p)
1.1453 +{
1.1454 + return js_free(p);
1.1455 +}
1.1456 +
1.1457 +JS_PUBLIC_API(void)
1.1458 +JS_freeop(JSFreeOp *fop, void *p)
1.1459 +{
1.1460 + return FreeOp::get(fop)->free_(p);
1.1461 +}
1.1462 +
1.1463 +JS_PUBLIC_API(JSFreeOp *)
1.1464 +JS_GetDefaultFreeOp(JSRuntime *rt)
1.1465 +{
1.1466 + return rt->defaultFreeOp();
1.1467 +}
1.1468 +
1.1469 +JS_PUBLIC_API(void)
1.1470 +JS_updateMallocCounter(JSContext *cx, size_t nbytes)
1.1471 +{
1.1472 + return cx->runtime()->updateMallocCounter(cx->zone(), nbytes);
1.1473 +}
1.1474 +
1.1475 +JS_PUBLIC_API(char *)
1.1476 +JS_strdup(JSContext *cx, const char *s)
1.1477 +{
1.1478 + AssertHeapIsIdle(cx);
1.1479 + return js_strdup(cx, s);
1.1480 +}
1.1481 +
1.1482 +JS_PUBLIC_API(char *)
1.1483 +JS_strdup(JSRuntime *rt, const char *s)
1.1484 +{
1.1485 + AssertHeapIsIdle(rt);
1.1486 + size_t n = strlen(s) + 1;
1.1487 + void *p = rt->malloc_(n);
1.1488 + if (!p)
1.1489 + return nullptr;
1.1490 + return static_cast<char*>(js_memcpy(p, s, n));
1.1491 +}
1.1492 +
1.1493 +#undef JS_AddRoot
1.1494 +
1.1495 +JS_PUBLIC_API(bool)
1.1496 +JS::AddValueRoot(JSContext *cx, JS::Heap<JS::Value> *vp)
1.1497 +{
1.1498 + AssertHeapIsIdle(cx);
1.1499 + CHECK_REQUEST(cx);
1.1500 + return AddValueRoot(cx, vp->unsafeGet(), nullptr);
1.1501 +}
1.1502 +
1.1503 +JS_PUBLIC_API(bool)
1.1504 +JS::AddStringRoot(JSContext *cx, JS::Heap<JSString *> *rp)
1.1505 +{
1.1506 + AssertHeapIsIdle(cx);
1.1507 + CHECK_REQUEST(cx);
1.1508 + return AddStringRoot(cx, rp->unsafeGet(), nullptr);
1.1509 +}
1.1510 +
1.1511 +JS_PUBLIC_API(bool)
1.1512 +JS::AddObjectRoot(JSContext *cx, JS::Heap<JSObject *> *rp)
1.1513 +{
1.1514 + AssertHeapIsIdle(cx);
1.1515 + CHECK_REQUEST(cx);
1.1516 + return AddObjectRoot(cx, rp->unsafeGet(), nullptr);
1.1517 +}
1.1518 +
1.1519 +JS_PUBLIC_API(bool)
1.1520 +JS::AddNamedValueRoot(JSContext *cx, JS::Heap<JS::Value> *vp, const char *name)
1.1521 +{
1.1522 + AssertHeapIsIdle(cx);
1.1523 + CHECK_REQUEST(cx);
1.1524 + return AddValueRoot(cx, vp->unsafeGet(), name);
1.1525 +}
1.1526 +
1.1527 +JS_PUBLIC_API(bool)
1.1528 +JS::AddNamedValueRootRT(JSRuntime *rt, JS::Heap<JS::Value> *vp, const char *name)
1.1529 +{
1.1530 + return AddValueRootRT(rt, vp->unsafeGet(), name);
1.1531 +}
1.1532 +
1.1533 +JS_PUBLIC_API(bool)
1.1534 +JS::AddNamedStringRoot(JSContext *cx, JS::Heap<JSString *> *rp, const char *name)
1.1535 +{
1.1536 + AssertHeapIsIdle(cx);
1.1537 + CHECK_REQUEST(cx);
1.1538 + return AddStringRoot(cx, rp->unsafeGet(), name);
1.1539 +}
1.1540 +
1.1541 +JS_PUBLIC_API(bool)
1.1542 +JS::AddNamedObjectRoot(JSContext *cx, JS::Heap<JSObject *> *rp, const char *name)
1.1543 +{
1.1544 + AssertHeapIsIdle(cx);
1.1545 + CHECK_REQUEST(cx);
1.1546 + return AddObjectRoot(cx, rp->unsafeGet(), name);
1.1547 +}
1.1548 +
1.1549 +JS_PUBLIC_API(bool)
1.1550 +JS::AddNamedScriptRoot(JSContext *cx, JS::Heap<JSScript *> *rp, const char *name)
1.1551 +{
1.1552 + AssertHeapIsIdle(cx);
1.1553 + CHECK_REQUEST(cx);
1.1554 + return AddScriptRoot(cx, rp->unsafeGet(), name);
1.1555 +}
1.1556 +
1.1557 +/* We allow unrooting from finalizers within the GC */
1.1558 +
1.1559 +JS_PUBLIC_API(void)
1.1560 +JS::RemoveValueRoot(JSContext *cx, JS::Heap<JS::Value> *vp)
1.1561 +{
1.1562 + CHECK_REQUEST(cx);
1.1563 + RemoveRoot(cx->runtime(), (void *)vp);
1.1564 + *vp = UndefinedValue();
1.1565 +}
1.1566 +
1.1567 +JS_PUBLIC_API(void)
1.1568 +JS::RemoveStringRoot(JSContext *cx, JS::Heap<JSString *> *rp)
1.1569 +{
1.1570 + CHECK_REQUEST(cx);
1.1571 + RemoveRoot(cx->runtime(), (void *)rp);
1.1572 + *rp = nullptr;
1.1573 +}
1.1574 +
1.1575 +JS_PUBLIC_API(void)
1.1576 +JS::RemoveObjectRoot(JSContext *cx, JS::Heap<JSObject *> *rp)
1.1577 +{
1.1578 + CHECK_REQUEST(cx);
1.1579 + RemoveRoot(cx->runtime(), (void *)rp);
1.1580 + *rp = nullptr;
1.1581 +}
1.1582 +
1.1583 +JS_PUBLIC_API(void)
1.1584 +JS::RemoveScriptRoot(JSContext *cx, JS::Heap<JSScript *> *rp)
1.1585 +{
1.1586 + CHECK_REQUEST(cx);
1.1587 + RemoveRoot(cx->runtime(), (void *)rp);
1.1588 + *rp = nullptr;
1.1589 +}
1.1590 +
1.1591 +JS_PUBLIC_API(void)
1.1592 +JS::RemoveValueRootRT(JSRuntime *rt, JS::Heap<JS::Value> *vp)
1.1593 +{
1.1594 + RemoveRoot(rt, (void *)vp);
1.1595 + *vp = UndefinedValue();
1.1596 +}
1.1597 +
1.1598 +JS_PUBLIC_API(void)
1.1599 +JS::RemoveStringRootRT(JSRuntime *rt, JS::Heap<JSString *> *rp)
1.1600 +{
1.1601 + RemoveRoot(rt, (void *)rp);
1.1602 + *rp = nullptr;
1.1603 +}
1.1604 +
1.1605 +JS_PUBLIC_API(void)
1.1606 +JS::RemoveObjectRootRT(JSRuntime *rt, JS::Heap<JSObject *> *rp)
1.1607 +{
1.1608 + RemoveRoot(rt, (void *)rp);
1.1609 + *rp = nullptr;
1.1610 +}
1.1611 +
1.1612 +JS_PUBLIC_API(void)
1.1613 +JS::RemoveScriptRootRT(JSRuntime *rt, JS::Heap<JSScript *> *rp)
1.1614 +{
1.1615 + RemoveRoot(rt, (void *)rp);
1.1616 + *rp = nullptr;
1.1617 +}
1.1618 +
1.1619 +JS_PUBLIC_API(bool)
1.1620 +JS_AddExtraGCRootsTracer(JSRuntime *rt, JSTraceDataOp traceOp, void *data)
1.1621 +{
1.1622 + AssertHeapIsIdle(rt);
1.1623 + return !!rt->gcBlackRootTracers.append(JSRuntime::ExtraTracer(traceOp, data));
1.1624 +}
1.1625 +
1.1626 +JS_PUBLIC_API(void)
1.1627 +JS_RemoveExtraGCRootsTracer(JSRuntime *rt, JSTraceDataOp traceOp, void *data)
1.1628 +{
1.1629 + AssertHeapIsIdle(rt);
1.1630 + for (size_t i = 0; i < rt->gcBlackRootTracers.length(); i++) {
1.1631 + JSRuntime::ExtraTracer *e = &rt->gcBlackRootTracers[i];
1.1632 + if (e->op == traceOp && e->data == data) {
1.1633 + rt->gcBlackRootTracers.erase(e);
1.1634 + break;
1.1635 + }
1.1636 + }
1.1637 +}
1.1638 +
1.1639 +#ifdef DEBUG
1.1640 +
1.1641 +typedef struct JSHeapDumpNode JSHeapDumpNode;
1.1642 +
1.1643 +struct JSHeapDumpNode {
1.1644 + void *thing;
1.1645 + JSGCTraceKind kind;
1.1646 + JSHeapDumpNode *next; /* next sibling */
1.1647 + JSHeapDumpNode *parent; /* node with the thing that refer to thing
1.1648 + from this node */
1.1649 + char edgeName[1]; /* name of the edge from parent->thing
1.1650 + into thing */
1.1651 +};
1.1652 +
1.1653 +typedef HashSet<void *, PointerHasher<void *, 3>, SystemAllocPolicy> VisitedSet;
1.1654 +
1.1655 +class DumpingTracer
1.1656 +{
1.1657 + public:
1.1658 + DumpingTracer(JSRuntime *rt, JSTraceCallback callback)
1.1659 + : base(rt, callback)
1.1660 + {}
1.1661 +
1.1662 + JSTracer base;
1.1663 + VisitedSet visited;
1.1664 + bool ok;
1.1665 + void *startThing;
1.1666 + void *thingToFind;
1.1667 + void *thingToIgnore;
1.1668 + JSHeapDumpNode *parentNode;
1.1669 + JSHeapDumpNode **lastNodep;
1.1670 + char buffer[200];
1.1671 +};
1.1672 +
1.1673 +static void
1.1674 +DumpNotify(JSTracer *trc, void **thingp, JSGCTraceKind kind)
1.1675 +{
1.1676 + JS_ASSERT(trc->callback == DumpNotify);
1.1677 +
1.1678 + DumpingTracer *dtrc = (DumpingTracer *)trc;
1.1679 + void *thing = *thingp;
1.1680 +
1.1681 + if (!dtrc->ok || thing == dtrc->thingToIgnore)
1.1682 + return;
1.1683 +
1.1684 + /*
1.1685 + * Check if we have already seen thing unless it is thingToFind to include
1.1686 + * it to the graph each time we reach it and print all live things that
1.1687 + * refer to thingToFind.
1.1688 + *
1.1689 + * This does not print all possible paths leading to thingToFind since
1.1690 + * when a thing A refers directly or indirectly to thingToFind and A is
1.1691 + * present several times in the graph, we will print only the first path
1.1692 + * leading to A and thingToFind, other ways to reach A will be ignored.
1.1693 + */
1.1694 + if (dtrc->thingToFind != thing) {
1.1695 + /*
1.1696 + * The startThing check allows to avoid putting startThing into the
1.1697 + * hash table before tracing startThing in JS_DumpHeap.
1.1698 + */
1.1699 + if (thing == dtrc->startThing)
1.1700 + return;
1.1701 + VisitedSet::AddPtr p = dtrc->visited.lookupForAdd(thing);
1.1702 + if (p)
1.1703 + return;
1.1704 + if (!dtrc->visited.add(p, thing)) {
1.1705 + dtrc->ok = false;
1.1706 + return;
1.1707 + }
1.1708 + }
1.1709 +
1.1710 + const char *edgeName = dtrc->base.getTracingEdgeName(dtrc->buffer, sizeof(dtrc->buffer));
1.1711 + size_t edgeNameSize = strlen(edgeName) + 1;
1.1712 + size_t bytes = offsetof(JSHeapDumpNode, edgeName) + edgeNameSize;
1.1713 + JSHeapDumpNode *node = (JSHeapDumpNode *) js_malloc(bytes);
1.1714 + if (!node) {
1.1715 + dtrc->ok = false;
1.1716 + return;
1.1717 + }
1.1718 +
1.1719 + node->thing = thing;
1.1720 + node->kind = kind;
1.1721 + node->next = nullptr;
1.1722 + node->parent = dtrc->parentNode;
1.1723 + js_memcpy(node->edgeName, edgeName, edgeNameSize);
1.1724 +
1.1725 + JS_ASSERT(!*dtrc->lastNodep);
1.1726 + *dtrc->lastNodep = node;
1.1727 + dtrc->lastNodep = &node->next;
1.1728 +}
1.1729 +
1.1730 +/* Dump node and the chain that leads to thing it contains. */
1.1731 +static bool
1.1732 +DumpNode(DumpingTracer *dtrc, FILE* fp, JSHeapDumpNode *node)
1.1733 +{
1.1734 + JSHeapDumpNode *prev, *following;
1.1735 + size_t chainLimit;
1.1736 + enum { MAX_PARENTS_TO_PRINT = 10 };
1.1737 +
1.1738 + JS_GetTraceThingInfo(dtrc->buffer, sizeof dtrc->buffer,
1.1739 + &dtrc->base, node->thing, node->kind, true);
1.1740 + if (fprintf(fp, "%p %-22s via ", node->thing, dtrc->buffer) < 0)
1.1741 + return false;
1.1742 +
1.1743 + /*
1.1744 + * We need to print the parent chain in the reverse order. To do it in
1.1745 + * O(N) time where N is the chain length we first reverse the chain while
1.1746 + * searching for the top and then print each node while restoring the
1.1747 + * chain order.
1.1748 + */
1.1749 + chainLimit = MAX_PARENTS_TO_PRINT;
1.1750 + prev = nullptr;
1.1751 + for (;;) {
1.1752 + following = node->parent;
1.1753 + node->parent = prev;
1.1754 + prev = node;
1.1755 + node = following;
1.1756 + if (!node)
1.1757 + break;
1.1758 + if (chainLimit == 0) {
1.1759 + if (fputs("...", fp) < 0)
1.1760 + return false;
1.1761 + break;
1.1762 + }
1.1763 + --chainLimit;
1.1764 + }
1.1765 +
1.1766 + node = prev;
1.1767 + prev = following;
1.1768 + bool ok = true;
1.1769 + do {
1.1770 + /* Loop must continue even when !ok to restore the parent chain. */
1.1771 + if (ok) {
1.1772 + if (!prev) {
1.1773 + /* Print edge from some runtime root or startThing. */
1.1774 + if (fputs(node->edgeName, fp) < 0)
1.1775 + ok = false;
1.1776 + } else {
1.1777 + JS_GetTraceThingInfo(dtrc->buffer, sizeof dtrc->buffer,
1.1778 + &dtrc->base, prev->thing, prev->kind,
1.1779 + false);
1.1780 + if (fprintf(fp, "(%p %s).%s",
1.1781 + prev->thing, dtrc->buffer, node->edgeName) < 0) {
1.1782 + ok = false;
1.1783 + }
1.1784 + }
1.1785 + }
1.1786 + following = node->parent;
1.1787 + node->parent = prev;
1.1788 + prev = node;
1.1789 + node = following;
1.1790 + } while (node);
1.1791 +
1.1792 + return ok && putc('\n', fp) >= 0;
1.1793 +}
1.1794 +
1.1795 +JS_PUBLIC_API(bool)
1.1796 +JS_DumpHeap(JSRuntime *rt, FILE *fp, void* startThing, JSGCTraceKind startKind,
1.1797 + void *thingToFind, size_t maxDepth, void *thingToIgnore)
1.1798 +{
1.1799 + if (maxDepth == 0)
1.1800 + return true;
1.1801 +
1.1802 + DumpingTracer dtrc(rt, DumpNotify);
1.1803 + if (!dtrc.visited.init())
1.1804 + return false;
1.1805 + dtrc.ok = true;
1.1806 + dtrc.startThing = startThing;
1.1807 + dtrc.thingToFind = thingToFind;
1.1808 + dtrc.thingToIgnore = thingToIgnore;
1.1809 + dtrc.parentNode = nullptr;
1.1810 + JSHeapDumpNode *node = nullptr;
1.1811 + dtrc.lastNodep = &node;
1.1812 + if (!startThing) {
1.1813 + JS_ASSERT(startKind == JSTRACE_OBJECT);
1.1814 + TraceRuntime(&dtrc.base);
1.1815 + } else {
1.1816 + JS_TraceChildren(&dtrc.base, startThing, startKind);
1.1817 + }
1.1818 +
1.1819 + if (!node)
1.1820 + return dtrc.ok;
1.1821 +
1.1822 + size_t depth = 1;
1.1823 + JSHeapDumpNode *children, *next, *parent;
1.1824 + bool thingToFindWasTraced = thingToFind && thingToFind == startThing;
1.1825 + for (;;) {
1.1826 + /*
1.1827 + * Loop must continue even when !dtrc.ok to free all nodes allocated
1.1828 + * so far.
1.1829 + */
1.1830 + if (dtrc.ok) {
1.1831 + if (thingToFind == nullptr || thingToFind == node->thing)
1.1832 + dtrc.ok = DumpNode(&dtrc, fp, node);
1.1833 +
1.1834 + /* Descend into children. */
1.1835 + if (dtrc.ok &&
1.1836 + depth < maxDepth &&
1.1837 + (thingToFind != node->thing || !thingToFindWasTraced)) {
1.1838 + dtrc.parentNode = node;
1.1839 + children = nullptr;
1.1840 + dtrc.lastNodep = &children;
1.1841 + JS_TraceChildren(&dtrc.base, node->thing, node->kind);
1.1842 + if (thingToFind == node->thing)
1.1843 + thingToFindWasTraced = true;
1.1844 + if (children != nullptr) {
1.1845 + ++depth;
1.1846 + node = children;
1.1847 + continue;
1.1848 + }
1.1849 + }
1.1850 + }
1.1851 +
1.1852 + /* Move to next or parents next and free the node. */
1.1853 + for (;;) {
1.1854 + next = node->next;
1.1855 + parent = node->parent;
1.1856 + js_free(node);
1.1857 + node = next;
1.1858 + if (node)
1.1859 + break;
1.1860 + if (!parent)
1.1861 + return dtrc.ok;
1.1862 + JS_ASSERT(depth > 1);
1.1863 + --depth;
1.1864 + node = parent;
1.1865 + }
1.1866 + }
1.1867 +
1.1868 + JS_ASSERT(depth == 1);
1.1869 + return dtrc.ok;
1.1870 +}
1.1871 +
1.1872 +#endif /* DEBUG */
1.1873 +
1.1874 +extern JS_PUBLIC_API(bool)
1.1875 +JS_IsGCMarkingTracer(JSTracer *trc)
1.1876 +{
1.1877 + return IS_GC_MARKING_TRACER(trc);
1.1878 +}
1.1879 +
1.1880 +#ifdef DEBUG
1.1881 +extern JS_PUBLIC_API(bool)
1.1882 +JS_IsMarkingGray(JSTracer *trc)
1.1883 +{
1.1884 + JS_ASSERT(JS_IsGCMarkingTracer(trc));
1.1885 + return trc->callback == GCMarker::GrayCallback;
1.1886 +}
1.1887 +#endif
1.1888 +
1.1889 +JS_PUBLIC_API(void)
1.1890 +JS_GC(JSRuntime *rt)
1.1891 +{
1.1892 + AssertHeapIsIdle(rt);
1.1893 + JS::PrepareForFullGC(rt);
1.1894 + GC(rt, GC_NORMAL, JS::gcreason::API);
1.1895 +}
1.1896 +
1.1897 +JS_PUBLIC_API(void)
1.1898 +JS_MaybeGC(JSContext *cx)
1.1899 +{
1.1900 + MaybeGC(cx);
1.1901 +}
1.1902 +
1.1903 +JS_PUBLIC_API(void)
1.1904 +JS_SetGCCallback(JSRuntime *rt, JSGCCallback cb, void *data)
1.1905 +{
1.1906 + AssertHeapIsIdle(rt);
1.1907 + rt->gcCallback = cb;
1.1908 + rt->gcCallbackData = data;
1.1909 +}
1.1910 +
1.1911 +JS_PUBLIC_API(void)
1.1912 +JS_SetFinalizeCallback(JSRuntime *rt, JSFinalizeCallback cb)
1.1913 +{
1.1914 + AssertHeapIsIdle(rt);
1.1915 + rt->gcFinalizeCallback = cb;
1.1916 +}
1.1917 +
1.1918 +JS_PUBLIC_API(bool)
1.1919 +JS_IsAboutToBeFinalized(JS::Heap<JSObject *> *objp)
1.1920 +{
1.1921 + return IsObjectAboutToBeFinalized(objp->unsafeGet());
1.1922 +}
1.1923 +
1.1924 +JS_PUBLIC_API(bool)
1.1925 +JS_IsAboutToBeFinalizedUnbarriered(JSObject **objp)
1.1926 +{
1.1927 + return IsObjectAboutToBeFinalized(objp);
1.1928 +}
1.1929 +
1.1930 +JS_PUBLIC_API(void)
1.1931 +JS_SetGCParameter(JSRuntime *rt, JSGCParamKey key, uint32_t value)
1.1932 +{
1.1933 + switch (key) {
1.1934 + case JSGC_MAX_BYTES: {
1.1935 + JS_ASSERT(value >= rt->gcBytes);
1.1936 + rt->gcMaxBytes = value;
1.1937 + break;
1.1938 + }
1.1939 + case JSGC_MAX_MALLOC_BYTES:
1.1940 + rt->setGCMaxMallocBytes(value);
1.1941 + break;
1.1942 + case JSGC_SLICE_TIME_BUDGET:
1.1943 + rt->gcSliceBudget = SliceBudget::TimeBudget(value);
1.1944 + break;
1.1945 + case JSGC_MARK_STACK_LIMIT:
1.1946 + js::SetMarkStackLimit(rt, value);
1.1947 + break;
1.1948 + case JSGC_HIGH_FREQUENCY_TIME_LIMIT:
1.1949 + rt->gcHighFrequencyTimeThreshold = value;
1.1950 + break;
1.1951 + case JSGC_HIGH_FREQUENCY_LOW_LIMIT:
1.1952 + rt->gcHighFrequencyLowLimitBytes = value * 1024 * 1024;
1.1953 + break;
1.1954 + case JSGC_HIGH_FREQUENCY_HIGH_LIMIT:
1.1955 + rt->gcHighFrequencyHighLimitBytes = value * 1024 * 1024;
1.1956 + break;
1.1957 + case JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MAX:
1.1958 + rt->gcHighFrequencyHeapGrowthMax = value / 100.0;
1.1959 + MOZ_ASSERT(rt->gcHighFrequencyHeapGrowthMax / 0.85 > 1.0);
1.1960 + break;
1.1961 + case JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MIN:
1.1962 + rt->gcHighFrequencyHeapGrowthMin = value / 100.0;
1.1963 + MOZ_ASSERT(rt->gcHighFrequencyHeapGrowthMin / 0.85 > 1.0);
1.1964 + break;
1.1965 + case JSGC_LOW_FREQUENCY_HEAP_GROWTH:
1.1966 + rt->gcLowFrequencyHeapGrowth = value / 100.0;
1.1967 + MOZ_ASSERT(rt->gcLowFrequencyHeapGrowth / 0.9 > 1.0);
1.1968 + break;
1.1969 + case JSGC_DYNAMIC_HEAP_GROWTH:
1.1970 + rt->gcDynamicHeapGrowth = value;
1.1971 + break;
1.1972 + case JSGC_DYNAMIC_MARK_SLICE:
1.1973 + rt->gcDynamicMarkSlice = value;
1.1974 + break;
1.1975 + case JSGC_ALLOCATION_THRESHOLD:
1.1976 + rt->gcAllocationThreshold = value * 1024 * 1024;
1.1977 + break;
1.1978 + case JSGC_DECOMMIT_THRESHOLD:
1.1979 + rt->gcDecommitThreshold = value * 1024 * 1024;
1.1980 + break;
1.1981 + default:
1.1982 + JS_ASSERT(key == JSGC_MODE);
1.1983 + rt->setGCMode(JSGCMode(value));
1.1984 + JS_ASSERT(rt->gcMode() == JSGC_MODE_GLOBAL ||
1.1985 + rt->gcMode() == JSGC_MODE_COMPARTMENT ||
1.1986 + rt->gcMode() == JSGC_MODE_INCREMENTAL);
1.1987 + return;
1.1988 + }
1.1989 +}
1.1990 +
1.1991 +JS_PUBLIC_API(uint32_t)
1.1992 +JS_GetGCParameter(JSRuntime *rt, JSGCParamKey key)
1.1993 +{
1.1994 + switch (key) {
1.1995 + case JSGC_MAX_BYTES:
1.1996 + return uint32_t(rt->gcMaxBytes);
1.1997 + case JSGC_MAX_MALLOC_BYTES:
1.1998 + return rt->gcMaxMallocBytes;
1.1999 + case JSGC_BYTES:
1.2000 + return uint32_t(rt->gcBytes);
1.2001 + case JSGC_MODE:
1.2002 + return uint32_t(rt->gcMode());
1.2003 + case JSGC_UNUSED_CHUNKS:
1.2004 + return uint32_t(rt->gcChunkPool.getEmptyCount());
1.2005 + case JSGC_TOTAL_CHUNKS:
1.2006 + return uint32_t(rt->gcChunkSet.count() + rt->gcChunkPool.getEmptyCount());
1.2007 + case JSGC_SLICE_TIME_BUDGET:
1.2008 + return uint32_t(rt->gcSliceBudget > 0 ? rt->gcSliceBudget / PRMJ_USEC_PER_MSEC : 0);
1.2009 + case JSGC_MARK_STACK_LIMIT:
1.2010 + return rt->gcMarker.maxCapacity();
1.2011 + case JSGC_HIGH_FREQUENCY_TIME_LIMIT:
1.2012 + return rt->gcHighFrequencyTimeThreshold;
1.2013 + case JSGC_HIGH_FREQUENCY_LOW_LIMIT:
1.2014 + return rt->gcHighFrequencyLowLimitBytes / 1024 / 1024;
1.2015 + case JSGC_HIGH_FREQUENCY_HIGH_LIMIT:
1.2016 + return rt->gcHighFrequencyHighLimitBytes / 1024 / 1024;
1.2017 + case JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MAX:
1.2018 + return uint32_t(rt->gcHighFrequencyHeapGrowthMax * 100);
1.2019 + case JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MIN:
1.2020 + return uint32_t(rt->gcHighFrequencyHeapGrowthMin * 100);
1.2021 + case JSGC_LOW_FREQUENCY_HEAP_GROWTH:
1.2022 + return uint32_t(rt->gcLowFrequencyHeapGrowth * 100);
1.2023 + case JSGC_DYNAMIC_HEAP_GROWTH:
1.2024 + return rt->gcDynamicHeapGrowth;
1.2025 + case JSGC_DYNAMIC_MARK_SLICE:
1.2026 + return rt->gcDynamicMarkSlice;
1.2027 + case JSGC_ALLOCATION_THRESHOLD:
1.2028 + return rt->gcAllocationThreshold / 1024 / 1024;
1.2029 + default:
1.2030 + JS_ASSERT(key == JSGC_NUMBER);
1.2031 + return uint32_t(rt->gcNumber);
1.2032 + }
1.2033 +}
1.2034 +
1.2035 +JS_PUBLIC_API(void)
1.2036 +JS_SetGCParameterForThread(JSContext *cx, JSGCParamKey key, uint32_t value)
1.2037 +{
1.2038 + JS_ASSERT(key == JSGC_MAX_CODE_CACHE_BYTES);
1.2039 +}
1.2040 +
1.2041 +JS_PUBLIC_API(uint32_t)
1.2042 +JS_GetGCParameterForThread(JSContext *cx, JSGCParamKey key)
1.2043 +{
1.2044 + JS_ASSERT(key == JSGC_MAX_CODE_CACHE_BYTES);
1.2045 + return 0;
1.2046 +}
1.2047 +
1.2048 +static const size_t NumGCConfigs = 14;
1.2049 +struct JSGCConfig {
1.2050 + JSGCParamKey key;
1.2051 + uint32_t value;
1.2052 +};
1.2053 +
1.2054 +JS_PUBLIC_API(void)
1.2055 +JS_SetGCParametersBasedOnAvailableMemory(JSRuntime *rt, uint32_t availMem)
1.2056 +{
1.2057 + static const JSGCConfig minimal[NumGCConfigs] = {
1.2058 + {JSGC_MAX_MALLOC_BYTES, 6 * 1024 * 1024},
1.2059 + {JSGC_SLICE_TIME_BUDGET, 30},
1.2060 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2061 + {JSGC_HIGH_FREQUENCY_HIGH_LIMIT, 40},
1.2062 + {JSGC_HIGH_FREQUENCY_LOW_LIMIT, 0},
1.2063 + {JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MAX, 300},
1.2064 + {JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MIN, 120},
1.2065 + {JSGC_LOW_FREQUENCY_HEAP_GROWTH, 120},
1.2066 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2067 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2068 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2069 + {JSGC_ALLOCATION_THRESHOLD, 1},
1.2070 + {JSGC_DECOMMIT_THRESHOLD, 1},
1.2071 + {JSGC_MODE, JSGC_MODE_INCREMENTAL}
1.2072 + };
1.2073 +
1.2074 + const JSGCConfig *config = minimal;
1.2075 + if (availMem > 512) {
1.2076 + static const JSGCConfig nominal[NumGCConfigs] = {
1.2077 + {JSGC_MAX_MALLOC_BYTES, 6 * 1024 * 1024},
1.2078 + {JSGC_SLICE_TIME_BUDGET, 30},
1.2079 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1000},
1.2080 + {JSGC_HIGH_FREQUENCY_HIGH_LIMIT, 500},
1.2081 + {JSGC_HIGH_FREQUENCY_LOW_LIMIT, 100},
1.2082 + {JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MAX, 300},
1.2083 + {JSGC_HIGH_FREQUENCY_HEAP_GROWTH_MIN, 150},
1.2084 + {JSGC_LOW_FREQUENCY_HEAP_GROWTH, 150},
1.2085 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2086 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2087 + {JSGC_HIGH_FREQUENCY_TIME_LIMIT, 1500},
1.2088 + {JSGC_ALLOCATION_THRESHOLD, 30},
1.2089 + {JSGC_DECOMMIT_THRESHOLD, 32},
1.2090 + {JSGC_MODE, JSGC_MODE_COMPARTMENT}
1.2091 + };
1.2092 +
1.2093 + config = nominal;
1.2094 + }
1.2095 +
1.2096 + for (size_t i = 0; i < NumGCConfigs; i++)
1.2097 + JS_SetGCParameter(rt, config[i].key, config[i].value);
1.2098 +}
1.2099 +
1.2100 +
1.2101 +JS_PUBLIC_API(JSString *)
1.2102 +JS_NewExternalString(JSContext *cx, const jschar *chars, size_t length,
1.2103 + const JSStringFinalizer *fin)
1.2104 +{
1.2105 + AssertHeapIsIdle(cx);
1.2106 + CHECK_REQUEST(cx);
1.2107 + JSString *s = JSExternalString::new_(cx, chars, length, fin);
1.2108 + return s;
1.2109 +}
1.2110 +
1.2111 +extern JS_PUBLIC_API(bool)
1.2112 +JS_IsExternalString(JSString *str)
1.2113 +{
1.2114 + return str->isExternal();
1.2115 +}
1.2116 +
1.2117 +extern JS_PUBLIC_API(const JSStringFinalizer *)
1.2118 +JS_GetExternalStringFinalizer(JSString *str)
1.2119 +{
1.2120 + return str->asExternal().externalFinalizer();
1.2121 +}
1.2122 +
1.2123 +static void
1.2124 +SetNativeStackQuota(JSRuntime *rt, StackKind kind, size_t stackSize)
1.2125 +{
1.2126 + rt->nativeStackQuota[kind] = stackSize;
1.2127 + if (rt->nativeStackBase)
1.2128 + RecomputeStackLimit(rt, kind);
1.2129 +}
1.2130 +
1.2131 +void
1.2132 +js::RecomputeStackLimit(JSRuntime *rt, StackKind kind)
1.2133 +{
1.2134 + size_t stackSize = rt->nativeStackQuota[kind];
1.2135 +#if JS_STACK_GROWTH_DIRECTION > 0
1.2136 + if (stackSize == 0) {
1.2137 + rt->mainThread.nativeStackLimit[kind] = UINTPTR_MAX;
1.2138 + } else {
1.2139 + JS_ASSERT(rt->nativeStackBase <= size_t(-1) - stackSize);
1.2140 + rt->mainThread.nativeStackLimit[kind] =
1.2141 + rt->nativeStackBase + stackSize - 1;
1.2142 + }
1.2143 +#else
1.2144 + if (stackSize == 0) {
1.2145 + rt->mainThread.nativeStackLimit[kind] = 0;
1.2146 + } else {
1.2147 + JS_ASSERT(rt->nativeStackBase >= stackSize);
1.2148 + rt->mainThread.nativeStackLimit[kind] =
1.2149 + rt->nativeStackBase - (stackSize - 1);
1.2150 + }
1.2151 +#endif
1.2152 +
1.2153 + // If there's no pending interrupt request set on the runtime's main thread's
1.2154 + // jitStackLimit, then update it so that it reflects the new nativeStacklimit.
1.2155 + //
1.2156 + // Note that, for now, we use the untrusted limit for ion. This is fine,
1.2157 + // because it's the most conservative limit, and if we hit it, we'll bail
1.2158 + // out of ion into the interpeter, which will do a proper recursion check.
1.2159 +#ifdef JS_ION
1.2160 + if (kind == StackForUntrustedScript) {
1.2161 + JSRuntime::AutoLockForInterrupt lock(rt);
1.2162 + if (rt->mainThread.jitStackLimit != uintptr_t(-1)) {
1.2163 + rt->mainThread.jitStackLimit = rt->mainThread.nativeStackLimit[kind];
1.2164 +#ifdef JS_ARM_SIMULATOR
1.2165 + rt->mainThread.jitStackLimit = jit::Simulator::StackLimit();
1.2166 +#endif
1.2167 + }
1.2168 + }
1.2169 +#endif
1.2170 +}
1.2171 +
1.2172 +JS_PUBLIC_API(void)
1.2173 +JS_SetNativeStackQuota(JSRuntime *rt, size_t systemCodeStackSize,
1.2174 + size_t trustedScriptStackSize,
1.2175 + size_t untrustedScriptStackSize)
1.2176 +{
1.2177 + JS_ASSERT_IF(trustedScriptStackSize,
1.2178 + trustedScriptStackSize < systemCodeStackSize);
1.2179 + if (!trustedScriptStackSize)
1.2180 + trustedScriptStackSize = systemCodeStackSize;
1.2181 + JS_ASSERT_IF(untrustedScriptStackSize,
1.2182 + untrustedScriptStackSize < trustedScriptStackSize);
1.2183 + if (!untrustedScriptStackSize)
1.2184 + untrustedScriptStackSize = trustedScriptStackSize;
1.2185 + SetNativeStackQuota(rt, StackForSystemCode, systemCodeStackSize);
1.2186 + SetNativeStackQuota(rt, StackForTrustedScript, trustedScriptStackSize);
1.2187 + SetNativeStackQuota(rt, StackForUntrustedScript, untrustedScriptStackSize);
1.2188 +}
1.2189 +
1.2190 +/************************************************************************/
1.2191 +
1.2192 +JS_PUBLIC_API(int)
1.2193 +JS_IdArrayLength(JSContext *cx, JSIdArray *ida)
1.2194 +{
1.2195 + return ida->length;
1.2196 +}
1.2197 +
1.2198 +JS_PUBLIC_API(jsid)
1.2199 +JS_IdArrayGet(JSContext *cx, JSIdArray *ida, int index)
1.2200 +{
1.2201 + JS_ASSERT(index >= 0 && index < ida->length);
1.2202 + return ida->vector[index];
1.2203 +}
1.2204 +
1.2205 +JS_PUBLIC_API(void)
1.2206 +JS_DestroyIdArray(JSContext *cx, JSIdArray *ida)
1.2207 +{
1.2208 + cx->runtime()->defaultFreeOp()->free_(ida);
1.2209 +}
1.2210 +
1.2211 +JS_PUBLIC_API(bool)
1.2212 +JS_ValueToId(JSContext *cx, HandleValue value, MutableHandleId idp)
1.2213 +{
1.2214 + AssertHeapIsIdle(cx);
1.2215 + CHECK_REQUEST(cx);
1.2216 + assertSameCompartment(cx, value);
1.2217 + return ValueToId<CanGC>(cx, value, idp);
1.2218 +}
1.2219 +
1.2220 +JS_PUBLIC_API(bool)
1.2221 +JS_StringToId(JSContext *cx, HandleString string, MutableHandleId idp)
1.2222 +{
1.2223 + AssertHeapIsIdle(cx);
1.2224 + CHECK_REQUEST(cx);
1.2225 + assertSameCompartment(cx, string);
1.2226 + RootedValue value(cx, StringValue(string));
1.2227 + return ValueToId<CanGC>(cx, value, idp);
1.2228 +}
1.2229 +
1.2230 +JS_PUBLIC_API(bool)
1.2231 +JS_IdToValue(JSContext *cx, jsid id, MutableHandleValue vp)
1.2232 +{
1.2233 + AssertHeapIsIdle(cx);
1.2234 + CHECK_REQUEST(cx);
1.2235 + vp.set(IdToValue(id));
1.2236 + assertSameCompartment(cx, vp);
1.2237 + return true;
1.2238 +}
1.2239 +
1.2240 +JS_PUBLIC_API(bool)
1.2241 +JS_DefaultValue(JSContext *cx, HandleObject obj, JSType hint, MutableHandleValue vp)
1.2242 +{
1.2243 + AssertHeapIsIdle(cx);
1.2244 + CHECK_REQUEST(cx);
1.2245 + JS_ASSERT(obj != nullptr);
1.2246 + JS_ASSERT(hint == JSTYPE_VOID || hint == JSTYPE_STRING || hint == JSTYPE_NUMBER);
1.2247 + return JSObject::defaultValue(cx, obj, hint, vp);
1.2248 +}
1.2249 +
1.2250 +JS_PUBLIC_API(bool)
1.2251 +JS_PropertyStub(JSContext *cx, HandleObject obj, HandleId id, MutableHandleValue vp)
1.2252 +{
1.2253 + return true;
1.2254 +}
1.2255 +
1.2256 +JS_PUBLIC_API(bool)
1.2257 +JS_StrictPropertyStub(JSContext *cx, HandleObject obj, HandleId id, bool strict, MutableHandleValue vp)
1.2258 +{
1.2259 + return true;
1.2260 +}
1.2261 +
1.2262 +JS_PUBLIC_API(bool)
1.2263 +JS_DeletePropertyStub(JSContext *cx, HandleObject obj, HandleId id, bool *succeeded)
1.2264 +{
1.2265 + *succeeded = true;
1.2266 + return true;
1.2267 +}
1.2268 +
1.2269 +JS_PUBLIC_API(bool)
1.2270 +JS_EnumerateStub(JSContext *cx, HandleObject obj)
1.2271 +{
1.2272 + return true;
1.2273 +}
1.2274 +
1.2275 +JS_PUBLIC_API(bool)
1.2276 +JS_ResolveStub(JSContext *cx, HandleObject obj, HandleId id)
1.2277 +{
1.2278 + return true;
1.2279 +}
1.2280 +
1.2281 +JS_PUBLIC_API(bool)
1.2282 +JS_ConvertStub(JSContext *cx, HandleObject obj, JSType type, MutableHandleValue vp)
1.2283 +{
1.2284 + JS_ASSERT(type != JSTYPE_OBJECT && type != JSTYPE_FUNCTION);
1.2285 + JS_ASSERT(obj);
1.2286 + return DefaultValue(cx, obj, type, vp);
1.2287 +}
1.2288 +
1.2289 +JS_PUBLIC_API(JSObject *)
1.2290 +JS_InitClass(JSContext *cx, HandleObject obj, HandleObject parent_proto,
1.2291 + const JSClass *clasp, JSNative constructor, unsigned nargs,
1.2292 + const JSPropertySpec *ps, const JSFunctionSpec *fs,
1.2293 + const JSPropertySpec *static_ps, const JSFunctionSpec *static_fs)
1.2294 +{
1.2295 + AssertHeapIsIdle(cx);
1.2296 + CHECK_REQUEST(cx);
1.2297 + assertSameCompartment(cx, obj, parent_proto);
1.2298 + return js_InitClass(cx, obj, parent_proto, Valueify(clasp), constructor,
1.2299 + nargs, ps, fs, static_ps, static_fs);
1.2300 +}
1.2301 +
1.2302 +JS_PUBLIC_API(bool)
1.2303 +JS_LinkConstructorAndPrototype(JSContext *cx, HandleObject ctor, HandleObject proto)
1.2304 +{
1.2305 + return LinkConstructorAndPrototype(cx, ctor, proto);
1.2306 +}
1.2307 +
1.2308 +JS_PUBLIC_API(const JSClass *)
1.2309 +JS_GetClass(JSObject *obj)
1.2310 +{
1.2311 + return obj->getJSClass();
1.2312 +}
1.2313 +
1.2314 +JS_PUBLIC_API(bool)
1.2315 +JS_InstanceOf(JSContext *cx, HandleObject obj, const JSClass *clasp, CallArgs *args)
1.2316 +{
1.2317 + AssertHeapIsIdle(cx);
1.2318 + CHECK_REQUEST(cx);
1.2319 +#ifdef DEBUG
1.2320 + if (args) {
1.2321 + assertSameCompartment(cx, obj);
1.2322 + assertSameCompartment(cx, args->thisv(), args->calleev());
1.2323 + }
1.2324 +#endif
1.2325 + if (!obj || obj->getJSClass() != clasp) {
1.2326 + if (args)
1.2327 + ReportIncompatibleMethod(cx, *args, Valueify(clasp));
1.2328 + return false;
1.2329 + }
1.2330 + return true;
1.2331 +}
1.2332 +
1.2333 +JS_PUBLIC_API(bool)
1.2334 +JS_HasInstance(JSContext *cx, HandleObject obj, HandleValue value, bool *bp)
1.2335 +{
1.2336 + AssertHeapIsIdle(cx);
1.2337 + assertSameCompartment(cx, obj, value);
1.2338 + return HasInstance(cx, obj, value, bp);
1.2339 +}
1.2340 +
1.2341 +JS_PUBLIC_API(void *)
1.2342 +JS_GetPrivate(JSObject *obj)
1.2343 +{
1.2344 + /* This function can be called by a finalizer. */
1.2345 + return obj->getPrivate();
1.2346 +}
1.2347 +
1.2348 +JS_PUBLIC_API(void)
1.2349 +JS_SetPrivate(JSObject *obj, void *data)
1.2350 +{
1.2351 + /* This function can be called by a finalizer. */
1.2352 + obj->setPrivate(data);
1.2353 +}
1.2354 +
1.2355 +JS_PUBLIC_API(void *)
1.2356 +JS_GetInstancePrivate(JSContext *cx, HandleObject obj, const JSClass *clasp, CallArgs *args)
1.2357 +{
1.2358 + if (!JS_InstanceOf(cx, obj, clasp, args))
1.2359 + return nullptr;
1.2360 + return obj->getPrivate();
1.2361 +}
1.2362 +
1.2363 +JS_PUBLIC_API(bool)
1.2364 +JS_GetPrototype(JSContext *cx, JS::Handle<JSObject*> obj, JS::MutableHandle<JSObject*> protop)
1.2365 +{
1.2366 + return JSObject::getProto(cx, obj, protop);
1.2367 +}
1.2368 +
1.2369 +JS_PUBLIC_API(bool)
1.2370 +JS_SetPrototype(JSContext *cx, JS::Handle<JSObject*> obj, JS::Handle<JSObject*> proto)
1.2371 +{
1.2372 + AssertHeapIsIdle(cx);
1.2373 + CHECK_REQUEST(cx);
1.2374 + assertSameCompartment(cx, obj, proto);
1.2375 +
1.2376 + bool succeeded;
1.2377 + if (!JSObject::setProto(cx, obj, proto, &succeeded))
1.2378 + return false;
1.2379 +
1.2380 + if (!succeeded) {
1.2381 + RootedValue val(cx, ObjectValue(*obj));
1.2382 + js_ReportValueError(cx, JSMSG_SETPROTOTYPEOF_FAIL, JSDVG_IGNORE_STACK, val, js::NullPtr());
1.2383 + return false;
1.2384 + }
1.2385 +
1.2386 + return true;
1.2387 +}
1.2388 +
1.2389 +JS_PUBLIC_API(JSObject *)
1.2390 +JS_GetParent(JSObject *obj)
1.2391 +{
1.2392 + JS_ASSERT(!obj->is<ScopeObject>());
1.2393 + return obj->getParent();
1.2394 +}
1.2395 +
1.2396 +JS_PUBLIC_API(bool)
1.2397 +JS_SetParent(JSContext *cx, HandleObject obj, HandleObject parent)
1.2398 +{
1.2399 + AssertHeapIsIdle(cx);
1.2400 + CHECK_REQUEST(cx);
1.2401 + JS_ASSERT(!obj->is<ScopeObject>());
1.2402 + JS_ASSERT(parent || !obj->getParent());
1.2403 + assertSameCompartment(cx, obj, parent);
1.2404 +
1.2405 + return JSObject::setParent(cx, obj, parent);
1.2406 +}
1.2407 +
1.2408 +JS_PUBLIC_API(JSObject *)
1.2409 +JS_GetConstructor(JSContext *cx, HandleObject proto)
1.2410 +{
1.2411 + AssertHeapIsIdle(cx);
1.2412 + CHECK_REQUEST(cx);
1.2413 + assertSameCompartment(cx, proto);
1.2414 +
1.2415 + RootedValue cval(cx);
1.2416 + if (!JSObject::getProperty(cx, proto, proto, cx->names().constructor, &cval))
1.2417 + return nullptr;
1.2418 + if (!IsFunctionObject(cval)) {
1.2419 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_NO_CONSTRUCTOR,
1.2420 + proto->getClass()->name);
1.2421 + return nullptr;
1.2422 + }
1.2423 + return &cval.toObject();
1.2424 +}
1.2425 +
1.2426 +namespace {
1.2427 +
1.2428 +class AutoCompartmentRooter : private JS::CustomAutoRooter
1.2429 +{
1.2430 + public:
1.2431 + explicit AutoCompartmentRooter(JSContext *cx, JSCompartment *comp
1.2432 + MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
1.2433 + : CustomAutoRooter(cx), compartment(comp)
1.2434 + {
1.2435 + MOZ_GUARD_OBJECT_NOTIFIER_INIT;
1.2436 + }
1.2437 +
1.2438 + operator JSCompartment *() {
1.2439 + return compartment;
1.2440 + }
1.2441 +
1.2442 + JSCompartment *operator->() {
1.2443 + return compartment;
1.2444 + }
1.2445 +
1.2446 + protected:
1.2447 + virtual void trace(JSTracer *trc)
1.2448 + {
1.2449 + compartment->mark();
1.2450 + }
1.2451 +
1.2452 + private:
1.2453 + JSCompartment *compartment;
1.2454 + MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
1.2455 +};
1.2456 +
1.2457 +} /* anonymous namespace */
1.2458 +
1.2459 +bool
1.2460 +JS::CompartmentOptions::cloneSingletons(JSContext *cx) const
1.2461 +{
1.2462 + return cloneSingletonsOverride_.get(cx->options().cloneSingletons());
1.2463 +}
1.2464 +
1.2465 +JS::CompartmentOptions &
1.2466 +JS::CompartmentOptions::setZone(ZoneSpecifier spec)
1.2467 +{
1.2468 + zone_.spec = spec;
1.2469 + return *this;
1.2470 +}
1.2471 +
1.2472 +JS::CompartmentOptions &
1.2473 +JS::CompartmentOptions::setSameZoneAs(JSObject *obj)
1.2474 +{
1.2475 + zone_.pointer = static_cast<void *>(obj->zone());
1.2476 + return *this;
1.2477 +}
1.2478 +
1.2479 +JS::CompartmentOptions &
1.2480 +JS::CompartmentOptionsRef(JSCompartment *compartment)
1.2481 +{
1.2482 + return compartment->options();
1.2483 +}
1.2484 +
1.2485 +JS::CompartmentOptions &
1.2486 +JS::CompartmentOptionsRef(JSObject *obj)
1.2487 +{
1.2488 + return obj->compartment()->options();
1.2489 +}
1.2490 +
1.2491 +JS::CompartmentOptions &
1.2492 +JS::CompartmentOptionsRef(JSContext *cx)
1.2493 +{
1.2494 + return cx->compartment()->options();
1.2495 +}
1.2496 +
1.2497 +JS_PUBLIC_API(JSObject *)
1.2498 +JS_NewGlobalObject(JSContext *cx, const JSClass *clasp, JSPrincipals *principals,
1.2499 + JS::OnNewGlobalHookOption hookOption,
1.2500 + const JS::CompartmentOptions &options /* = JS::CompartmentOptions() */)
1.2501 +{
1.2502 + AssertHeapIsIdle(cx);
1.2503 + CHECK_REQUEST(cx);
1.2504 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.2505 + JS_ASSERT(!cx->isExceptionPending());
1.2506 +
1.2507 + JSRuntime *rt = cx->runtime();
1.2508 +
1.2509 + Zone *zone;
1.2510 + if (options.zoneSpecifier() == JS::SystemZone)
1.2511 + zone = rt->systemZone;
1.2512 + else if (options.zoneSpecifier() == JS::FreshZone)
1.2513 + zone = nullptr;
1.2514 + else
1.2515 + zone = static_cast<Zone *>(options.zonePointer());
1.2516 +
1.2517 + AutoCompartmentRooter compartment(cx, NewCompartment(cx, zone, principals, options));
1.2518 + if (!compartment)
1.2519 + return nullptr;
1.2520 +
1.2521 + // Lazily create the system zone.
1.2522 + if (!rt->systemZone && options.zoneSpecifier() == JS::SystemZone) {
1.2523 + rt->systemZone = compartment->zone();
1.2524 + rt->systemZone->isSystem = true;
1.2525 + }
1.2526 +
1.2527 + Rooted<GlobalObject *> global(cx);
1.2528 + {
1.2529 + AutoCompartment ac(cx, compartment);
1.2530 + global = GlobalObject::create(cx, Valueify(clasp));
1.2531 + }
1.2532 +
1.2533 + if (!global)
1.2534 + return nullptr;
1.2535 +
1.2536 + if (hookOption == JS::FireOnNewGlobalHook)
1.2537 + JS_FireOnNewGlobalObject(cx, global);
1.2538 +
1.2539 + return global;
1.2540 +}
1.2541 +
1.2542 +JS_PUBLIC_API(void)
1.2543 +JS_GlobalObjectTraceHook(JSTracer *trc, JSObject *global)
1.2544 +{
1.2545 + JS_ASSERT(global->is<GlobalObject>());
1.2546 +
1.2547 + // Off thread parsing and compilation tasks create a dummy global which is then
1.2548 + // merged back into the host compartment. Since it used to be a global, it will still
1.2549 + // have this trace hook, but it does not have a meaning relative to its new compartment.
1.2550 + // We can safely skip it.
1.2551 + if (!global->isOwnGlobal())
1.2552 + return;
1.2553 +
1.2554 + // Trace the compartment for any GC things that should only stick around if we know the
1.2555 + // compartment is live.
1.2556 + global->compartment()->trace(trc);
1.2557 +
1.2558 + JSTraceOp trace = global->compartment()->options().getTrace();
1.2559 + if (trace)
1.2560 + trace(trc, global);
1.2561 +}
1.2562 +
1.2563 +JS_PUBLIC_API(void)
1.2564 +JS_FireOnNewGlobalObject(JSContext *cx, JS::HandleObject global)
1.2565 +{
1.2566 + // This hook is infallible, because we don't really want arbitrary script
1.2567 + // to be able to throw errors during delicate global creation routines.
1.2568 + // This infallibility will eat OOM and slow script, but if that happens
1.2569 + // we'll likely run up into them again soon in a fallible context.
1.2570 + Rooted<js::GlobalObject*> globalObject(cx, &global->as<GlobalObject>());
1.2571 + Debugger::onNewGlobalObject(cx, globalObject);
1.2572 +}
1.2573 +
1.2574 +JS_PUBLIC_API(JSObject *)
1.2575 +JS_NewObject(JSContext *cx, const JSClass *jsclasp, HandleObject proto, HandleObject parent)
1.2576 +{
1.2577 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.2578 + AssertHeapIsIdle(cx);
1.2579 + CHECK_REQUEST(cx);
1.2580 + assertSameCompartment(cx, proto, parent);
1.2581 +
1.2582 + const Class *clasp = Valueify(jsclasp);
1.2583 + if (!clasp)
1.2584 + clasp = &JSObject::class_; /* default class is Object */
1.2585 +
1.2586 + JS_ASSERT(clasp != &JSFunction::class_);
1.2587 + JS_ASSERT(!(clasp->flags & JSCLASS_IS_GLOBAL));
1.2588 +
1.2589 + JSObject *obj = NewObjectWithClassProto(cx, clasp, proto, parent);
1.2590 + JS_ASSERT_IF(obj, obj->getParent());
1.2591 + return obj;
1.2592 +}
1.2593 +
1.2594 +JS_PUBLIC_API(JSObject *)
1.2595 +JS_NewObjectWithGivenProto(JSContext *cx, const JSClass *jsclasp, HandleObject proto, HandleObject parent)
1.2596 +{
1.2597 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.2598 + AssertHeapIsIdle(cx);
1.2599 + CHECK_REQUEST(cx);
1.2600 + assertSameCompartment(cx, proto, parent);
1.2601 +
1.2602 + const Class *clasp = Valueify(jsclasp);
1.2603 + if (!clasp)
1.2604 + clasp = &JSObject::class_; /* default class is Object */
1.2605 +
1.2606 + JS_ASSERT(clasp != &JSFunction::class_);
1.2607 + JS_ASSERT(!(clasp->flags & JSCLASS_IS_GLOBAL));
1.2608 +
1.2609 + JSObject *obj = NewObjectWithGivenProto(cx, clasp, proto, parent);
1.2610 + if (obj)
1.2611 + MarkTypeObjectUnknownProperties(cx, obj->type());
1.2612 + return obj;
1.2613 +}
1.2614 +
1.2615 +JS_PUBLIC_API(JSObject *)
1.2616 +JS_NewObjectForConstructor(JSContext *cx, const JSClass *clasp, const CallArgs& args)
1.2617 +{
1.2618 + AssertHeapIsIdle(cx);
1.2619 + CHECK_REQUEST(cx);
1.2620 +
1.2621 + Value callee = args.calleev();
1.2622 + assertSameCompartment(cx, callee);
1.2623 + RootedObject obj(cx, &callee.toObject());
1.2624 + return CreateThis(cx, Valueify(clasp), obj);
1.2625 +}
1.2626 +
1.2627 +JS_PUBLIC_API(bool)
1.2628 +JS_IsExtensible(JSContext *cx, HandleObject obj, bool *extensible)
1.2629 +{
1.2630 + return JSObject::isExtensible(cx, obj, extensible);
1.2631 +}
1.2632 +
1.2633 +JS_PUBLIC_API(bool)
1.2634 +JS_IsNative(JSObject *obj)
1.2635 +{
1.2636 + return obj->isNative();
1.2637 +}
1.2638 +
1.2639 +JS_PUBLIC_API(JSRuntime *)
1.2640 +JS_GetObjectRuntime(JSObject *obj)
1.2641 +{
1.2642 + return obj->compartment()->runtimeFromMainThread();
1.2643 +}
1.2644 +
1.2645 +JS_PUBLIC_API(bool)
1.2646 +JS_FreezeObject(JSContext *cx, HandleObject obj)
1.2647 +{
1.2648 + AssertHeapIsIdle(cx);
1.2649 + CHECK_REQUEST(cx);
1.2650 + assertSameCompartment(cx, obj);
1.2651 + return JSObject::freeze(cx, obj);
1.2652 +}
1.2653 +
1.2654 +JS_PUBLIC_API(bool)
1.2655 +JS_DeepFreezeObject(JSContext *cx, HandleObject obj)
1.2656 +{
1.2657 + AssertHeapIsIdle(cx);
1.2658 + CHECK_REQUEST(cx);
1.2659 + assertSameCompartment(cx, obj);
1.2660 +
1.2661 + /* Assume that non-extensible objects are already deep-frozen, to avoid divergence. */
1.2662 + bool extensible;
1.2663 + if (!JSObject::isExtensible(cx, obj, &extensible))
1.2664 + return false;
1.2665 + if (!extensible)
1.2666 + return true;
1.2667 +
1.2668 + if (!JSObject::freeze(cx, obj))
1.2669 + return false;
1.2670 +
1.2671 + /* Walk slots in obj and if any value is a non-null object, seal it. */
1.2672 + for (uint32_t i = 0, n = obj->slotSpan(); i < n; ++i) {
1.2673 + const Value &v = obj->getSlot(i);
1.2674 + if (v.isPrimitive())
1.2675 + continue;
1.2676 + RootedObject obj(cx, &v.toObject());
1.2677 + if (!JS_DeepFreezeObject(cx, obj))
1.2678 + return false;
1.2679 + }
1.2680 +
1.2681 + return true;
1.2682 +}
1.2683 +
1.2684 +static bool
1.2685 +LookupPropertyById(JSContext *cx, HandleObject obj, HandleId id,
1.2686 + MutableHandleObject objp, MutableHandleShape propp)
1.2687 +{
1.2688 + AssertHeapIsIdle(cx);
1.2689 + CHECK_REQUEST(cx);
1.2690 + assertSameCompartment(cx, obj, id);
1.2691 +
1.2692 + return JSObject::lookupGeneric(cx, obj, id, objp, propp);
1.2693 +}
1.2694 +
1.2695 +#define AUTO_NAMELEN(s,n) (((n) == (size_t)-1) ? js_strlen(s) : (n))
1.2696 +
1.2697 +static bool
1.2698 +LookupResult(JSContext *cx, HandleObject obj, HandleObject obj2, HandleId id,
1.2699 + HandleShape shape, MutableHandleValue vp)
1.2700 +{
1.2701 + if (!shape) {
1.2702 + /* XXX bad API: no way to tell "not defined" from "void value" */
1.2703 + vp.setUndefined();
1.2704 + return true;
1.2705 + }
1.2706 +
1.2707 + if (!obj2->isNative()) {
1.2708 + if (obj2->is<ProxyObject>()) {
1.2709 + Rooted<PropertyDescriptor> desc(cx);
1.2710 + if (!Proxy::getPropertyDescriptor(cx, obj2, id, &desc))
1.2711 + return false;
1.2712 + if (!desc.isShared()) {
1.2713 + vp.set(desc.value());
1.2714 + return true;
1.2715 + }
1.2716 + }
1.2717 + } else if (IsImplicitDenseOrTypedArrayElement(shape)) {
1.2718 + vp.set(obj2->getDenseOrTypedArrayElement(JSID_TO_INT(id)));
1.2719 + return true;
1.2720 + } else {
1.2721 + /* Peek at the native property's slot value, without doing a Get. */
1.2722 + if (shape->hasSlot()) {
1.2723 + vp.set(obj2->nativeGetSlot(shape->slot()));
1.2724 + return true;
1.2725 + }
1.2726 + }
1.2727 +
1.2728 + /* XXX bad API: no way to return "defined but value unknown" */
1.2729 + vp.setBoolean(true);
1.2730 + return true;
1.2731 +}
1.2732 +
1.2733 +JS_PUBLIC_API(bool)
1.2734 +JS_LookupPropertyById(JSContext *cx, HandleObject obj, HandleId id, MutableHandleValue vp)
1.2735 +{
1.2736 + RootedObject obj2(cx);
1.2737 + RootedShape prop(cx);
1.2738 +
1.2739 + return LookupPropertyById(cx, obj, id, &obj2, &prop) &&
1.2740 + LookupResult(cx, obj, obj2, id, prop, vp);
1.2741 +}
1.2742 +
1.2743 +JS_PUBLIC_API(bool)
1.2744 +JS_LookupElement(JSContext *cx, HandleObject obj, uint32_t index, MutableHandleValue vp)
1.2745 +{
1.2746 + CHECK_REQUEST(cx);
1.2747 + RootedId id(cx);
1.2748 + if (!IndexToId(cx, index, &id))
1.2749 + return false;
1.2750 + return JS_LookupPropertyById(cx, obj, id, vp);
1.2751 +}
1.2752 +
1.2753 +JS_PUBLIC_API(bool)
1.2754 +JS_LookupProperty(JSContext *cx, HandleObject objArg, const char *name, MutableHandleValue vp)
1.2755 +{
1.2756 + RootedObject obj(cx, objArg);
1.2757 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.2758 + if (!atom)
1.2759 + return false;
1.2760 +
1.2761 + RootedId id(cx, AtomToId(atom));
1.2762 + return JS_LookupPropertyById(cx, obj, id, vp);
1.2763 +}
1.2764 +
1.2765 +JS_PUBLIC_API(bool)
1.2766 +JS_LookupUCProperty(JSContext *cx, HandleObject objArg, const jschar *name, size_t namelen,
1.2767 + MutableHandleValue vp)
1.2768 +{
1.2769 + RootedObject obj(cx, objArg);
1.2770 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.2771 + if (!atom)
1.2772 + return false;
1.2773 +
1.2774 + RootedId id(cx, AtomToId(atom));
1.2775 + return JS_LookupPropertyById(cx, obj, id, vp);
1.2776 +}
1.2777 +
1.2778 +JS_PUBLIC_API(bool)
1.2779 +JS_HasPropertyById(JSContext *cx, HandleObject obj, HandleId id, bool *foundp)
1.2780 +{
1.2781 + RootedObject obj2(cx);
1.2782 + RootedShape prop(cx);
1.2783 + bool ok = LookupPropertyById(cx, obj, id, &obj2, &prop);
1.2784 + *foundp = (prop != nullptr);
1.2785 + return ok;
1.2786 +}
1.2787 +
1.2788 +JS_PUBLIC_API(bool)
1.2789 +JS_HasElement(JSContext *cx, HandleObject obj, uint32_t index, bool *foundp)
1.2790 +{
1.2791 + AssertHeapIsIdle(cx);
1.2792 + CHECK_REQUEST(cx);
1.2793 + RootedId id(cx);
1.2794 + if (!IndexToId(cx, index, &id))
1.2795 + return false;
1.2796 + return JS_HasPropertyById(cx, obj, id, foundp);
1.2797 +}
1.2798 +
1.2799 +JS_PUBLIC_API(bool)
1.2800 +JS_HasProperty(JSContext *cx, HandleObject obj, const char *name, bool *foundp)
1.2801 +{
1.2802 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.2803 + if (!atom)
1.2804 + return false;
1.2805 + RootedId id(cx, AtomToId(atom));
1.2806 + return JS_HasPropertyById(cx, obj, id, foundp);
1.2807 +}
1.2808 +
1.2809 +JS_PUBLIC_API(bool)
1.2810 +JS_HasUCProperty(JSContext *cx, HandleObject obj, const jschar *name, size_t namelen, bool *foundp)
1.2811 +{
1.2812 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.2813 + if (!atom)
1.2814 + return false;
1.2815 + RootedId id(cx, AtomToId(atom));
1.2816 + return JS_HasPropertyById(cx, obj, id, foundp);
1.2817 +}
1.2818 +
1.2819 +JS_PUBLIC_API(bool)
1.2820 +JS_AlreadyHasOwnPropertyById(JSContext *cx, HandleObject obj, HandleId id, bool *foundp)
1.2821 +{
1.2822 + AssertHeapIsIdle(cx);
1.2823 + CHECK_REQUEST(cx);
1.2824 + assertSameCompartment(cx, obj, id);
1.2825 +
1.2826 + if (!obj->isNative()) {
1.2827 + RootedObject obj2(cx);
1.2828 + RootedShape prop(cx);
1.2829 +
1.2830 + if (!LookupPropertyById(cx, obj, id, &obj2, &prop))
1.2831 + return false;
1.2832 + *foundp = (obj == obj2);
1.2833 + return true;
1.2834 + }
1.2835 +
1.2836 + // Check for an existing native property on the objct. Be careful not to
1.2837 + // call any lookup or resolve hooks.
1.2838 +
1.2839 + if (JSID_IS_INT(id)) {
1.2840 + uint32_t index = JSID_TO_INT(id);
1.2841 +
1.2842 + if (obj->containsDenseElement(index)) {
1.2843 + *foundp = true;
1.2844 + return true;
1.2845 + }
1.2846 +
1.2847 + if (obj->is<TypedArrayObject>() && index < obj->as<TypedArrayObject>().length()) {
1.2848 + *foundp = true;
1.2849 + return true;
1.2850 + }
1.2851 + }
1.2852 +
1.2853 + *foundp = obj->nativeContains(cx, id);
1.2854 + return true;
1.2855 +}
1.2856 +
1.2857 +JS_PUBLIC_API(bool)
1.2858 +JS_AlreadyHasOwnElement(JSContext *cx, HandleObject obj, uint32_t index, bool *foundp)
1.2859 +{
1.2860 + AssertHeapIsIdle(cx);
1.2861 + CHECK_REQUEST(cx);
1.2862 + RootedId id(cx);
1.2863 + if (!IndexToId(cx, index, &id))
1.2864 + return false;
1.2865 + return JS_AlreadyHasOwnPropertyById(cx, obj, id, foundp);
1.2866 +}
1.2867 +
1.2868 +JS_PUBLIC_API(bool)
1.2869 +JS_AlreadyHasOwnProperty(JSContext *cx, HandleObject obj, const char *name, bool *foundp)
1.2870 +{
1.2871 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.2872 + if (!atom)
1.2873 + return false;
1.2874 + RootedId id(cx, AtomToId(atom));
1.2875 + return JS_AlreadyHasOwnPropertyById(cx, obj, id, foundp);
1.2876 +}
1.2877 +
1.2878 +JS_PUBLIC_API(bool)
1.2879 +JS_AlreadyHasOwnUCProperty(JSContext *cx, HandleObject obj, const jschar *name, size_t namelen,
1.2880 + bool *foundp)
1.2881 +{
1.2882 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.2883 + if (!atom)
1.2884 + return false;
1.2885 + RootedId id(cx, AtomToId(atom));
1.2886 + return JS_AlreadyHasOwnPropertyById(cx, obj, id, foundp);
1.2887 +}
1.2888 +
1.2889 +/* Wrapper functions to create wrappers with no corresponding JSJitInfo from API
1.2890 + * function arguments.
1.2891 + */
1.2892 +static JSPropertyOpWrapper
1.2893 +GetterWrapper(JSPropertyOp getter)
1.2894 +{
1.2895 + JSPropertyOpWrapper ret;
1.2896 + ret.op = getter;
1.2897 + ret.info = nullptr;
1.2898 + return ret;
1.2899 +}
1.2900 +
1.2901 +static JSStrictPropertyOpWrapper
1.2902 +SetterWrapper(JSStrictPropertyOp setter)
1.2903 +{
1.2904 + JSStrictPropertyOpWrapper ret;
1.2905 + ret.op = setter;
1.2906 + ret.info = nullptr;
1.2907 + return ret;
1.2908 +}
1.2909 +
1.2910 +static bool
1.2911 +DefinePropertyById(JSContext *cx, HandleObject obj, HandleId id, HandleValue value,
1.2912 + const JSPropertyOpWrapper &get, const JSStrictPropertyOpWrapper &set,
1.2913 + unsigned attrs, unsigned flags)
1.2914 +{
1.2915 + PropertyOp getter = get.op;
1.2916 + StrictPropertyOp setter = set.op;
1.2917 + /*
1.2918 + * JSPROP_READONLY has no meaning when accessors are involved. Ideally we'd
1.2919 + * throw if this happens, but we've accepted it for long enough that it's
1.2920 + * not worth trying to make callers change their ways. Just flip it off on
1.2921 + * its way through the API layer so that we can enforce this internally.
1.2922 + */
1.2923 + if (attrs & (JSPROP_GETTER | JSPROP_SETTER))
1.2924 + attrs &= ~JSPROP_READONLY;
1.2925 +
1.2926 + /*
1.2927 + * When we use DefineProperty, we need full scriptable Function objects rather
1.2928 + * than JSNatives. However, we might be pulling this property descriptor off
1.2929 + * of something with JSNative property descriptors. If we are, wrap them in
1.2930 + * JS Function objects.
1.2931 + */
1.2932 + if (attrs & JSPROP_NATIVE_ACCESSORS) {
1.2933 + JS_ASSERT(!(attrs & (JSPROP_GETTER | JSPROP_SETTER)));
1.2934 + JSFunction::Flags zeroFlags = JSAPIToJSFunctionFlags(0);
1.2935 + // We can't just use JS_NewFunctionById here because it
1.2936 + // assumes a string id.
1.2937 + RootedAtom atom(cx, JSID_IS_ATOM(id) ? JSID_TO_ATOM(id) : nullptr);
1.2938 + attrs &= ~JSPROP_NATIVE_ACCESSORS;
1.2939 + if (getter) {
1.2940 + RootedObject global(cx, (JSObject*) &obj->global());
1.2941 + JSFunction *getobj = NewFunction(cx, NullPtr(), (Native) getter, 0,
1.2942 + zeroFlags, global, atom);
1.2943 + if (!getobj)
1.2944 + return false;
1.2945 +
1.2946 + if (get.info)
1.2947 + getobj->setJitInfo(get.info);
1.2948 +
1.2949 + getter = JS_DATA_TO_FUNC_PTR(PropertyOp, getobj);
1.2950 + attrs |= JSPROP_GETTER;
1.2951 + }
1.2952 + if (setter) {
1.2953 + // Root just the getter, since the setter is not yet a JSObject.
1.2954 + AutoRooterGetterSetter getRoot(cx, JSPROP_GETTER, &getter, nullptr);
1.2955 + RootedObject global(cx, (JSObject*) &obj->global());
1.2956 + JSFunction *setobj = NewFunction(cx, NullPtr(), (Native) setter, 1,
1.2957 + zeroFlags, global, atom);
1.2958 + if (!setobj)
1.2959 + return false;
1.2960 +
1.2961 + if (set.info)
1.2962 + setobj->setJitInfo(set.info);
1.2963 +
1.2964 + setter = JS_DATA_TO_FUNC_PTR(StrictPropertyOp, setobj);
1.2965 + attrs |= JSPROP_SETTER;
1.2966 + }
1.2967 + }
1.2968 +
1.2969 +
1.2970 + AssertHeapIsIdle(cx);
1.2971 + CHECK_REQUEST(cx);
1.2972 + assertSameCompartment(cx, obj, id, value,
1.2973 + (attrs & JSPROP_GETTER)
1.2974 + ? JS_FUNC_TO_DATA_PTR(JSObject *, getter)
1.2975 + : nullptr,
1.2976 + (attrs & JSPROP_SETTER)
1.2977 + ? JS_FUNC_TO_DATA_PTR(JSObject *, setter)
1.2978 + : nullptr);
1.2979 +
1.2980 + return JSObject::defineGeneric(cx, obj, id, value, getter, setter, attrs);
1.2981 +}
1.2982 +
1.2983 +JS_PUBLIC_API(bool)
1.2984 +JS_DefinePropertyById(JSContext *cx, JSObject *objArg, jsid idArg, jsval valueArg,
1.2985 + JSPropertyOp getter, JSStrictPropertyOp setter, unsigned attrs)
1.2986 +{
1.2987 + RootedObject obj(cx, objArg);
1.2988 + RootedId id(cx, idArg);
1.2989 + RootedValue value(cx, valueArg);
1.2990 + return DefinePropertyById(cx, obj, id, value, GetterWrapper(getter), SetterWrapper(setter),
1.2991 + attrs, 0);
1.2992 +}
1.2993 +
1.2994 +JS_PUBLIC_API(bool)
1.2995 +JS_DefineElement(JSContext *cx, JSObject *objArg, uint32_t index, jsval valueArg,
1.2996 + JSPropertyOp getter, JSStrictPropertyOp setter, unsigned attrs)
1.2997 +{
1.2998 + RootedObject obj(cx, objArg);
1.2999 + RootedValue value(cx, valueArg);
1.3000 + AutoRooterGetterSetter gsRoot(cx, attrs, &getter, &setter);
1.3001 + AssertHeapIsIdle(cx);
1.3002 + CHECK_REQUEST(cx);
1.3003 + RootedId id(cx);
1.3004 + if (!IndexToId(cx, index, &id))
1.3005 + return false;
1.3006 + return DefinePropertyById(cx, obj, id, value, GetterWrapper(getter), SetterWrapper(setter),
1.3007 + attrs, 0);
1.3008 +}
1.3009 +
1.3010 +static bool
1.3011 +DefineProperty(JSContext *cx, HandleObject obj, const char *name, HandleValue value,
1.3012 + const JSPropertyOpWrapper &getter, const JSStrictPropertyOpWrapper &setter,
1.3013 + unsigned attrs, unsigned flags)
1.3014 +{
1.3015 + AutoRooterGetterSetter gsRoot(cx, attrs, const_cast<JSPropertyOp *>(&getter.op),
1.3016 + const_cast<JSStrictPropertyOp *>(&setter.op));
1.3017 +
1.3018 + RootedId id(cx);
1.3019 + if (attrs & JSPROP_INDEX) {
1.3020 + id.set(INT_TO_JSID(intptr_t(name)));
1.3021 + attrs &= ~JSPROP_INDEX;
1.3022 + } else {
1.3023 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.3024 + if (!atom)
1.3025 + return false;
1.3026 + id = AtomToId(atom);
1.3027 + }
1.3028 +
1.3029 + return DefinePropertyById(cx, obj, id, value, getter, setter, attrs, flags);
1.3030 +}
1.3031 +
1.3032 +
1.3033 +static bool
1.3034 +DefineSelfHostedProperty(JSContext *cx,
1.3035 + HandleObject obj,
1.3036 + const char *name,
1.3037 + const char *getterName,
1.3038 + const char *setterName,
1.3039 + unsigned attrs,
1.3040 + unsigned flags)
1.3041 +{
1.3042 + RootedAtom nameAtom(cx, Atomize(cx, name, strlen(name)));
1.3043 + if (!nameAtom)
1.3044 + return false;
1.3045 +
1.3046 + RootedAtom getterNameAtom(cx, Atomize(cx, getterName, strlen(getterName)));
1.3047 + if (!getterNameAtom)
1.3048 + return false;
1.3049 +
1.3050 + RootedValue getterValue(cx);
1.3051 + if (!cx->global()->getSelfHostedFunction(cx, getterNameAtom, nameAtom,
1.3052 + 0, &getterValue))
1.3053 + {
1.3054 + return false;
1.3055 + }
1.3056 + JS_ASSERT(getterValue.isObject() && getterValue.toObject().is<JSFunction>());
1.3057 + RootedFunction getterFunc(cx, &getterValue.toObject().as<JSFunction>());
1.3058 + JSPropertyOp getterOp = JS_DATA_TO_FUNC_PTR(PropertyOp, getterFunc.get());
1.3059 +
1.3060 + RootedFunction setterFunc(cx);
1.3061 + if (setterName) {
1.3062 + RootedAtom setterNameAtom(cx, Atomize(cx, setterName, strlen(setterName)));
1.3063 + if (!setterNameAtom)
1.3064 + return false;
1.3065 +
1.3066 + RootedValue setterValue(cx);
1.3067 + if (!cx->global()->getSelfHostedFunction(cx, setterNameAtom, nameAtom,
1.3068 + 0, &setterValue))
1.3069 + {
1.3070 + return false;
1.3071 + }
1.3072 + JS_ASSERT(setterValue.isObject() && setterValue.toObject().is<JSFunction>());
1.3073 + setterFunc = &getterValue.toObject().as<JSFunction>();
1.3074 + }
1.3075 + JSStrictPropertyOp setterOp = JS_DATA_TO_FUNC_PTR(StrictPropertyOp, setterFunc.get());
1.3076 +
1.3077 + return DefineProperty(cx, obj, name, JS::UndefinedHandleValue,
1.3078 + GetterWrapper(getterOp), SetterWrapper(setterOp),
1.3079 + attrs, flags);
1.3080 +}
1.3081 +
1.3082 +JS_PUBLIC_API(bool)
1.3083 +JS_DefineProperty(JSContext *cx, HandleObject obj, const char *name, HandleValue value,
1.3084 + unsigned attrs,
1.3085 + PropertyOp getter /* = nullptr */, JSStrictPropertyOp setter /* = nullptr */)
1.3086 +{
1.3087 + return DefineProperty(cx, obj, name, value, GetterWrapper(getter), SetterWrapper(setter),
1.3088 + attrs, 0);
1.3089 +}
1.3090 +
1.3091 +JS_PUBLIC_API(bool)
1.3092 +JS_DefineProperty(JSContext *cx, HandleObject obj, const char *name, HandleObject valueArg,
1.3093 + unsigned attrs,
1.3094 + PropertyOp getter /* = nullptr */, JSStrictPropertyOp setter /* = nullptr */)
1.3095 +{
1.3096 + RootedValue value(cx, ObjectValue(*valueArg));
1.3097 + return DefineProperty(cx, obj, name, value, GetterWrapper(getter), SetterWrapper(setter),
1.3098 + attrs, 0);
1.3099 +}
1.3100 +
1.3101 +JS_PUBLIC_API(bool)
1.3102 +JS_DefineProperty(JSContext *cx, HandleObject obj, const char *name, HandleString valueArg,
1.3103 + unsigned attrs,
1.3104 + PropertyOp getter /* = nullptr */, JSStrictPropertyOp setter /* = nullptr */)
1.3105 +{
1.3106 + RootedValue value(cx, StringValue(valueArg));
1.3107 + return DefineProperty(cx, obj, name, value, GetterWrapper(getter), SetterWrapper(setter),
1.3108 + attrs, 0);
1.3109 +}
1.3110 +
1.3111 +JS_PUBLIC_API(bool)
1.3112 +JS_DefineProperty(JSContext *cx, HandleObject obj, const char *name, int32_t valueArg,
1.3113 + unsigned attrs,
1.3114 + PropertyOp getter /* = nullptr */, JSStrictPropertyOp setter /* = nullptr */)
1.3115 +{
1.3116 + Value value = Int32Value(valueArg);
1.3117 + return DefineProperty(cx, obj, name, HandleValue::fromMarkedLocation(&value),
1.3118 + GetterWrapper(getter), SetterWrapper(setter), attrs, 0);
1.3119 +}
1.3120 +
1.3121 +JS_PUBLIC_API(bool)
1.3122 +JS_DefineProperty(JSContext *cx, HandleObject obj, const char *name, uint32_t valueArg,
1.3123 + unsigned attrs,
1.3124 + PropertyOp getter /* = nullptr */, JSStrictPropertyOp setter /* = nullptr */)
1.3125 +{
1.3126 + Value value = UINT_TO_JSVAL(valueArg);
1.3127 + return DefineProperty(cx, obj, name, HandleValue::fromMarkedLocation(&value),
1.3128 + GetterWrapper(getter), SetterWrapper(setter), attrs, 0);
1.3129 +}
1.3130 +
1.3131 +JS_PUBLIC_API(bool)
1.3132 +JS_DefineProperty(JSContext *cx, HandleObject obj, const char *name, double valueArg,
1.3133 + unsigned attrs,
1.3134 + PropertyOp getter /* = nullptr */, JSStrictPropertyOp setter /* = nullptr */)
1.3135 +{
1.3136 + Value value = NumberValue(valueArg);
1.3137 + return DefineProperty(cx, obj, name, HandleValue::fromMarkedLocation(&value),
1.3138 + GetterWrapper(getter), SetterWrapper(setter), attrs, 0);
1.3139 +}
1.3140 +
1.3141 +static bool
1.3142 +DefineUCProperty(JSContext *cx, HandleObject obj, const jschar *name, size_t namelen,
1.3143 + const Value &value_, PropertyOp getter, StrictPropertyOp setter, unsigned attrs,
1.3144 + unsigned flags)
1.3145 +{
1.3146 + RootedValue value(cx, value_);
1.3147 + AutoRooterGetterSetter gsRoot(cx, attrs, &getter, &setter);
1.3148 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.3149 + if (!atom)
1.3150 + return false;
1.3151 + RootedId id(cx, AtomToId(atom));
1.3152 + return DefinePropertyById(cx, obj, id, value, GetterWrapper(getter), SetterWrapper(setter),
1.3153 + attrs, flags);
1.3154 +}
1.3155 +
1.3156 +JS_PUBLIC_API(bool)
1.3157 +JS_DefineUCProperty(JSContext *cx, JSObject *objArg, const jschar *name, size_t namelen,
1.3158 + jsval valueArg, JSPropertyOp getter, JSStrictPropertyOp setter, unsigned attrs)
1.3159 +{
1.3160 + RootedObject obj(cx, objArg);
1.3161 + RootedValue value(cx, valueArg);
1.3162 + return DefineUCProperty(cx, obj, name, namelen, value, getter, setter, attrs, 0);
1.3163 +}
1.3164 +
1.3165 +JS_PUBLIC_API(bool)
1.3166 +JS_DefineOwnProperty(JSContext *cx, HandleObject obj, HandleId id, HandleValue descriptor, bool *bp)
1.3167 +{
1.3168 + AssertHeapIsIdle(cx);
1.3169 + CHECK_REQUEST(cx);
1.3170 + assertSameCompartment(cx, obj, id, descriptor);
1.3171 +
1.3172 + return DefineOwnProperty(cx, obj, id, descriptor, bp);
1.3173 +}
1.3174 +
1.3175 +JS_PUBLIC_API(JSObject *)
1.3176 +JS_DefineObject(JSContext *cx, JSObject *objArg, const char *name, const JSClass *jsclasp,
1.3177 + JSObject *protoArg, unsigned attrs)
1.3178 +{
1.3179 + RootedObject obj(cx, objArg);
1.3180 + RootedObject proto(cx, protoArg);
1.3181 + AssertHeapIsIdle(cx);
1.3182 + CHECK_REQUEST(cx);
1.3183 + assertSameCompartment(cx, obj, proto);
1.3184 +
1.3185 + const Class *clasp = Valueify(jsclasp);
1.3186 + if (!clasp)
1.3187 + clasp = &JSObject::class_; /* default class is Object */
1.3188 +
1.3189 + RootedObject nobj(cx, NewObjectWithClassProto(cx, clasp, proto, obj));
1.3190 + if (!nobj)
1.3191 + return nullptr;
1.3192 +
1.3193 + RootedValue nobjValue(cx, ObjectValue(*nobj));
1.3194 + if (!DefineProperty(cx, obj, name, nobjValue, GetterWrapper(nullptr), SetterWrapper(nullptr),
1.3195 + attrs, 0)) {
1.3196 + return nullptr;
1.3197 + }
1.3198 +
1.3199 + return nobj;
1.3200 +}
1.3201 +
1.3202 +JS_PUBLIC_API(bool)
1.3203 +JS_DefineConstDoubles(JSContext *cx, HandleObject obj, const JSConstDoubleSpec *cds)
1.3204 +{
1.3205 + bool ok;
1.3206 + unsigned attrs;
1.3207 +
1.3208 + AssertHeapIsIdle(cx);
1.3209 + CHECK_REQUEST(cx);
1.3210 + JSPropertyOpWrapper noget = GetterWrapper(nullptr);
1.3211 + JSStrictPropertyOpWrapper noset = SetterWrapper(nullptr);
1.3212 + for (ok = true; cds->name; cds++) {
1.3213 + RootedValue value(cx, DoubleValue(cds->dval));
1.3214 + attrs = cds->flags;
1.3215 + if (!attrs)
1.3216 + attrs = JSPROP_READONLY | JSPROP_PERMANENT;
1.3217 + ok = DefineProperty(cx, obj, cds->name, value, noget, noset, attrs, 0);
1.3218 + if (!ok)
1.3219 + break;
1.3220 + }
1.3221 + return ok;
1.3222 +}
1.3223 +
1.3224 +JS_PUBLIC_API(bool)
1.3225 +JS_DefineProperties(JSContext *cx, HandleObject obj, const JSPropertySpec *ps)
1.3226 +{
1.3227 + bool ok;
1.3228 + for (ok = true; ps->name; ps++) {
1.3229 + if (ps->flags & JSPROP_NATIVE_ACCESSORS) {
1.3230 + // If you declare native accessors, then you should have a native
1.3231 + // getter.
1.3232 + JS_ASSERT(ps->getter.propertyOp.op);
1.3233 + // If you do not have a self-hosted getter, you should not have a
1.3234 + // self-hosted setter. This is the closest approximation to that
1.3235 + // assertion we can have with our setup.
1.3236 + JS_ASSERT_IF(ps->setter.propertyOp.info, ps->setter.propertyOp.op);
1.3237 +
1.3238 + ok = DefineProperty(cx, obj, ps->name, JS::UndefinedHandleValue,
1.3239 + ps->getter.propertyOp, ps->setter.propertyOp, ps->flags, 0);
1.3240 + } else {
1.3241 + // If you have self-hosted getter/setter, you can't have a
1.3242 + // native one.
1.3243 + JS_ASSERT(!ps->getter.propertyOp.op && !ps->setter.propertyOp.op);
1.3244 + JS_ASSERT(ps->flags & JSPROP_GETTER);
1.3245 + /*
1.3246 + * During creation of the self-hosting global, we ignore all
1.3247 + * self-hosted properties, as that means we're currently setting up
1.3248 + * the global object that the self-hosted code is then compiled
1.3249 + * in. That means that Self-hosted properties can't be used in the
1.3250 + * self-hosting global itself, right now.
1.3251 + */
1.3252 + if (cx->runtime()->isSelfHostingGlobal(cx->global()))
1.3253 + continue;
1.3254 +
1.3255 + ok = DefineSelfHostedProperty(cx, obj, ps->name,
1.3256 + ps->getter.selfHosted.funname,
1.3257 + ps->setter.selfHosted.funname,
1.3258 + ps->flags, 0);
1.3259 + }
1.3260 + if (!ok)
1.3261 + break;
1.3262 + }
1.3263 + return ok;
1.3264 +}
1.3265 +
1.3266 +static bool
1.3267 +GetPropertyDescriptorById(JSContext *cx, HandleObject obj, HandleId id,
1.3268 + MutableHandle<PropertyDescriptor> desc)
1.3269 +{
1.3270 + RootedObject obj2(cx);
1.3271 + RootedShape shape(cx);
1.3272 +
1.3273 + if (!LookupPropertyById(cx, obj, id, &obj2, &shape))
1.3274 + return false;
1.3275 +
1.3276 + desc.clear();
1.3277 + if (!shape)
1.3278 + return true;
1.3279 +
1.3280 + desc.object().set(obj2);
1.3281 + if (obj2->isNative()) {
1.3282 + if (IsImplicitDenseOrTypedArrayElement(shape)) {
1.3283 + desc.setEnumerable();
1.3284 + desc.value().set(obj2->getDenseOrTypedArrayElement(JSID_TO_INT(id)));
1.3285 + } else {
1.3286 + desc.setAttributes(shape->attributes());
1.3287 + desc.setGetter(shape->getter());
1.3288 + desc.setSetter(shape->setter());
1.3289 + JS_ASSERT(desc.value().isUndefined());
1.3290 + if (shape->hasSlot())
1.3291 + desc.value().set(obj2->nativeGetSlot(shape->slot()));
1.3292 + }
1.3293 + } else {
1.3294 + if (obj2->is<ProxyObject>())
1.3295 + return Proxy::getPropertyDescriptor(cx, obj2, id, desc);
1.3296 + if (!JSObject::getGenericAttributes(cx, obj2, id, &desc.attributesRef()))
1.3297 + return false;
1.3298 + JS_ASSERT(desc.getter() == nullptr);
1.3299 + JS_ASSERT(desc.setter() == nullptr);
1.3300 + JS_ASSERT(desc.value().isUndefined());
1.3301 + }
1.3302 + return true;
1.3303 +}
1.3304 +
1.3305 +JS_PUBLIC_API(bool)
1.3306 +JS_GetOwnPropertyDescriptorById(JSContext *cx, HandleObject obj, HandleId id,
1.3307 + MutableHandle<JSPropertyDescriptor> desc)
1.3308 +{
1.3309 + AssertHeapIsIdle(cx);
1.3310 + CHECK_REQUEST(cx);
1.3311 +
1.3312 + return GetOwnPropertyDescriptor(cx, obj, id, desc);
1.3313 +}
1.3314 +
1.3315 +JS_PUBLIC_API(bool)
1.3316 +JS_GetOwnPropertyDescriptor(JSContext *cx, HandleObject obj, const char *name,
1.3317 + MutableHandle<JSPropertyDescriptor> desc)
1.3318 +{
1.3319 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.3320 + if (!atom)
1.3321 + return false;
1.3322 + RootedId id(cx, AtomToId(atom));
1.3323 + return JS_GetOwnPropertyDescriptorById(cx, obj, id, desc);
1.3324 +}
1.3325 +
1.3326 +JS_PUBLIC_API(bool)
1.3327 +JS_GetPropertyDescriptorById(JSContext *cx, HandleObject obj, HandleId id,
1.3328 + MutableHandle<JSPropertyDescriptor> desc)
1.3329 +{
1.3330 + return GetPropertyDescriptorById(cx, obj, id, desc);
1.3331 +}
1.3332 +
1.3333 +JS_PUBLIC_API(bool)
1.3334 +JS_GetPropertyDescriptor(JSContext *cx, HandleObject obj, const char *name,
1.3335 + MutableHandle<JSPropertyDescriptor> desc)
1.3336 +{
1.3337 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.3338 + if (!atom)
1.3339 + return false;
1.3340 + RootedId id(cx, AtomToId(atom));
1.3341 + return atom && JS_GetPropertyDescriptorById(cx, obj, id, desc);
1.3342 +}
1.3343 +
1.3344 +JS_PUBLIC_API(bool)
1.3345 +JS_GetPropertyById(JSContext *cx, HandleObject obj, HandleId id, MutableHandleValue vp)
1.3346 +{
1.3347 + return JS_ForwardGetPropertyTo(cx, obj, id, obj, vp);
1.3348 +}
1.3349 +
1.3350 +JS_PUBLIC_API(bool)
1.3351 +JS_ForwardGetPropertyTo(JSContext *cx, JS::HandleObject obj, JS::HandleId id, JS::HandleObject onBehalfOf,
1.3352 + JS::MutableHandleValue vp)
1.3353 +{
1.3354 + AssertHeapIsIdle(cx);
1.3355 + CHECK_REQUEST(cx);
1.3356 + assertSameCompartment(cx, obj, id);
1.3357 + assertSameCompartment(cx, onBehalfOf);
1.3358 +
1.3359 + return JSObject::getGeneric(cx, obj, onBehalfOf, id, vp);
1.3360 +}
1.3361 +
1.3362 +JS_PUBLIC_API(bool)
1.3363 +JS_GetElement(JSContext *cx, HandleObject objArg, uint32_t index, MutableHandleValue vp)
1.3364 +{
1.3365 + return JS_ForwardGetElementTo(cx, objArg, index, objArg, vp);
1.3366 +}
1.3367 +
1.3368 +JS_PUBLIC_API(bool)
1.3369 +JS_ForwardGetElementTo(JSContext *cx, HandleObject obj, uint32_t index, HandleObject onBehalfOf,
1.3370 + MutableHandleValue vp)
1.3371 +{
1.3372 + AssertHeapIsIdle(cx);
1.3373 + CHECK_REQUEST(cx);
1.3374 + assertSameCompartment(cx, obj);
1.3375 +
1.3376 + return JSObject::getElement(cx, obj, onBehalfOf, index, vp);
1.3377 +}
1.3378 +
1.3379 +JS_PUBLIC_API(bool)
1.3380 +JS_GetProperty(JSContext *cx, HandleObject obj, const char *name, MutableHandleValue vp)
1.3381 +{
1.3382 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.3383 + if (!atom)
1.3384 + return false;
1.3385 + RootedId id(cx, AtomToId(atom));
1.3386 + return JS_GetPropertyById(cx, obj, id, vp);
1.3387 +}
1.3388 +
1.3389 +JS_PUBLIC_API(bool)
1.3390 +JS_GetUCProperty(JSContext *cx, HandleObject obj, const jschar *name, size_t namelen,
1.3391 + MutableHandleValue vp)
1.3392 +{
1.3393 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.3394 + if (!atom)
1.3395 + return false;
1.3396 + RootedId id(cx, AtomToId(atom));
1.3397 + return JS_GetPropertyById(cx, obj, id, vp);
1.3398 +}
1.3399 +
1.3400 +JS_PUBLIC_API(bool)
1.3401 +JS_SetPropertyById(JSContext *cx, HandleObject obj, HandleId id, HandleValue v)
1.3402 +{
1.3403 + RootedValue value(cx, v);
1.3404 + AssertHeapIsIdle(cx);
1.3405 + CHECK_REQUEST(cx);
1.3406 + assertSameCompartment(cx, obj, id);
1.3407 +
1.3408 + return JSObject::setGeneric(cx, obj, obj, id, &value, false);
1.3409 +}
1.3410 +
1.3411 +static bool
1.3412 +SetElement(JSContext *cx, HandleObject obj, uint32_t index, MutableHandleValue vp)
1.3413 +{
1.3414 + AssertHeapIsIdle(cx);
1.3415 + CHECK_REQUEST(cx);
1.3416 + assertSameCompartment(cx, obj, vp);
1.3417 +
1.3418 + return JSObject::setElement(cx, obj, obj, index, vp, false);
1.3419 +}
1.3420 +
1.3421 +JS_PUBLIC_API(bool)
1.3422 +JS_SetElement(JSContext *cx, HandleObject obj, uint32_t index, HandleValue v)
1.3423 +{
1.3424 + RootedValue value(cx, v);
1.3425 + return SetElement(cx, obj, index, &value);
1.3426 +}
1.3427 +
1.3428 +JS_PUBLIC_API(bool)
1.3429 +JS_SetElement(JSContext *cx, HandleObject obj, uint32_t index, HandleObject v)
1.3430 +{
1.3431 + RootedValue value(cx, ObjectOrNullValue(v));
1.3432 + return SetElement(cx, obj, index, &value);
1.3433 +}
1.3434 +
1.3435 +JS_PUBLIC_API(bool)
1.3436 +JS_SetElement(JSContext *cx, HandleObject obj, uint32_t index, HandleString v)
1.3437 +{
1.3438 + RootedValue value(cx, StringValue(v));
1.3439 + return SetElement(cx, obj, index, &value);
1.3440 +}
1.3441 +
1.3442 +JS_PUBLIC_API(bool)
1.3443 +JS_SetElement(JSContext *cx, HandleObject obj, uint32_t index, int32_t v)
1.3444 +{
1.3445 + RootedValue value(cx, NumberValue(v));
1.3446 + return SetElement(cx, obj, index, &value);
1.3447 +}
1.3448 +
1.3449 +JS_PUBLIC_API(bool)
1.3450 +JS_SetElement(JSContext *cx, HandleObject obj, uint32_t index, uint32_t v)
1.3451 +{
1.3452 + RootedValue value(cx, NumberValue(v));
1.3453 + return SetElement(cx, obj, index, &value);
1.3454 +}
1.3455 +
1.3456 +JS_PUBLIC_API(bool)
1.3457 +JS_SetElement(JSContext *cx, HandleObject obj, uint32_t index, double v)
1.3458 +{
1.3459 + RootedValue value(cx, NumberValue(v));
1.3460 + return SetElement(cx, obj, index, &value);
1.3461 +}
1.3462 +
1.3463 +JS_PUBLIC_API(bool)
1.3464 +JS_SetProperty(JSContext *cx, HandleObject obj, const char *name, HandleValue v)
1.3465 +{
1.3466 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.3467 + if (!atom)
1.3468 + return false;
1.3469 + RootedId id(cx, AtomToId(atom));
1.3470 + return JS_SetPropertyById(cx, obj, id, v);
1.3471 +}
1.3472 +
1.3473 +JS_PUBLIC_API(bool)
1.3474 +JS_SetUCProperty(JSContext *cx, HandleObject obj, const jschar *name, size_t namelen,
1.3475 + HandleValue v)
1.3476 +{
1.3477 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.3478 + if (!atom)
1.3479 + return false;
1.3480 + RootedId id(cx, AtomToId(atom));
1.3481 + return JS_SetPropertyById(cx, obj, id, v);
1.3482 +}
1.3483 +
1.3484 +JS_PUBLIC_API(bool)
1.3485 +JS_DeletePropertyById2(JSContext *cx, HandleObject obj, HandleId id, bool *result)
1.3486 +{
1.3487 + AssertHeapIsIdle(cx);
1.3488 + CHECK_REQUEST(cx);
1.3489 + assertSameCompartment(cx, obj, id);
1.3490 +
1.3491 + return JSObject::deleteByValue(cx, obj, IdToValue(id), result);
1.3492 +}
1.3493 +
1.3494 +JS_PUBLIC_API(bool)
1.3495 +JS_DeleteElement2(JSContext *cx, HandleObject obj, uint32_t index, bool *result)
1.3496 +{
1.3497 + AssertHeapIsIdle(cx);
1.3498 + CHECK_REQUEST(cx);
1.3499 + assertSameCompartment(cx, obj);
1.3500 +
1.3501 + return JSObject::deleteElement(cx, obj, index, result);
1.3502 +}
1.3503 +
1.3504 +JS_PUBLIC_API(bool)
1.3505 +JS_DeleteProperty2(JSContext *cx, HandleObject obj, const char *name, bool *result)
1.3506 +{
1.3507 + CHECK_REQUEST(cx);
1.3508 + assertSameCompartment(cx, obj);
1.3509 +
1.3510 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.3511 + if (!atom)
1.3512 + return false;
1.3513 + return JSObject::deleteByValue(cx, obj, StringValue(atom), result);
1.3514 +}
1.3515 +
1.3516 +JS_PUBLIC_API(bool)
1.3517 +JS_DeleteUCProperty2(JSContext *cx, HandleObject obj, const jschar *name, size_t namelen,
1.3518 + bool *result)
1.3519 +{
1.3520 + CHECK_REQUEST(cx);
1.3521 + assertSameCompartment(cx, obj);
1.3522 +
1.3523 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.3524 + if (!atom)
1.3525 + return false;
1.3526 + return JSObject::deleteByValue(cx, obj, StringValue(atom), result);
1.3527 +}
1.3528 +
1.3529 +JS_PUBLIC_API(bool)
1.3530 +JS_DeletePropertyById(JSContext *cx, HandleObject obj, HandleId id)
1.3531 +{
1.3532 + bool junk;
1.3533 + return JS_DeletePropertyById2(cx, obj, id, &junk);
1.3534 +}
1.3535 +
1.3536 +JS_PUBLIC_API(bool)
1.3537 +JS_DeleteElement(JSContext *cx, HandleObject obj, uint32_t index)
1.3538 +{
1.3539 + bool junk;
1.3540 + return JS_DeleteElement2(cx, obj, index, &junk);
1.3541 +}
1.3542 +
1.3543 +JS_PUBLIC_API(bool)
1.3544 +JS_DeleteProperty(JSContext *cx, HandleObject obj, const char *name)
1.3545 +{
1.3546 + bool junk;
1.3547 + return JS_DeleteProperty2(cx, obj, name, &junk);
1.3548 +}
1.3549 +
1.3550 +static Shape *
1.3551 +LastConfigurableShape(JSObject *obj)
1.3552 +{
1.3553 + for (Shape::Range<NoGC> r(obj->lastProperty()); !r.empty(); r.popFront()) {
1.3554 + Shape *shape = &r.front();
1.3555 + if (shape->configurable())
1.3556 + return shape;
1.3557 + }
1.3558 + return nullptr;
1.3559 +}
1.3560 +
1.3561 +JS_PUBLIC_API(void)
1.3562 +JS_ClearNonGlobalObject(JSContext *cx, HandleObject obj)
1.3563 +{
1.3564 + AssertHeapIsIdle(cx);
1.3565 + CHECK_REQUEST(cx);
1.3566 + assertSameCompartment(cx, obj);
1.3567 +
1.3568 + JS_ASSERT(!obj->is<GlobalObject>());
1.3569 +
1.3570 + if (!obj->isNative())
1.3571 + return;
1.3572 +
1.3573 + /* Remove all configurable properties from obj. */
1.3574 + RootedShape shape(cx);
1.3575 + while ((shape = LastConfigurableShape(obj))) {
1.3576 + if (!obj->removeProperty(cx, shape->propid()))
1.3577 + return;
1.3578 + }
1.3579 +
1.3580 + /* Set all remaining writable plain data properties to undefined. */
1.3581 + for (Shape::Range<NoGC> r(obj->lastProperty()); !r.empty(); r.popFront()) {
1.3582 + Shape *shape = &r.front();
1.3583 + if (shape->isDataDescriptor() &&
1.3584 + shape->writable() &&
1.3585 + shape->hasDefaultSetter() &&
1.3586 + shape->hasSlot())
1.3587 + {
1.3588 + obj->nativeSetSlot(shape->slot(), UndefinedValue());
1.3589 + }
1.3590 + }
1.3591 +}
1.3592 +
1.3593 +JS_PUBLIC_API(void)
1.3594 +JS_SetAllNonReservedSlotsToUndefined(JSContext *cx, JSObject *objArg)
1.3595 +{
1.3596 + RootedObject obj(cx, objArg);
1.3597 + AssertHeapIsIdle(cx);
1.3598 + CHECK_REQUEST(cx);
1.3599 + assertSameCompartment(cx, obj);
1.3600 +
1.3601 + if (!obj->isNative())
1.3602 + return;
1.3603 +
1.3604 + const Class *clasp = obj->getClass();
1.3605 + unsigned numReserved = JSCLASS_RESERVED_SLOTS(clasp);
1.3606 + unsigned numSlots = obj->slotSpan();
1.3607 + for (unsigned i = numReserved; i < numSlots; i++)
1.3608 + obj->setSlot(i, UndefinedValue());
1.3609 +}
1.3610 +
1.3611 +JS_PUBLIC_API(JSIdArray *)
1.3612 +JS_Enumerate(JSContext *cx, HandleObject obj)
1.3613 +{
1.3614 + AssertHeapIsIdle(cx);
1.3615 + CHECK_REQUEST(cx);
1.3616 + assertSameCompartment(cx, obj);
1.3617 +
1.3618 + AutoIdVector props(cx);
1.3619 + JSIdArray *ida;
1.3620 + if (!GetPropertyNames(cx, obj, JSITER_OWNONLY, &props) || !VectorToIdArray(cx, props, &ida))
1.3621 + return nullptr;
1.3622 + return ida;
1.3623 +}
1.3624 +
1.3625 +/*
1.3626 + * XXX reverse iterator for properties, unreverse and meld with jsinterp.c's
1.3627 + * prop_iterator_class somehow...
1.3628 + * + preserve the obj->enumerate API while optimizing the native object case
1.3629 + * + native case here uses a JSShape *, but that iterates in reverse!
1.3630 + * + so we make non-native match, by reverse-iterating after JS_Enumerating
1.3631 + */
1.3632 +static const uint32_t JSSLOT_ITER_INDEX = 0;
1.3633 +
1.3634 +static void
1.3635 +prop_iter_finalize(FreeOp *fop, JSObject *obj)
1.3636 +{
1.3637 + void *pdata = obj->getPrivate();
1.3638 + if (!pdata)
1.3639 + return;
1.3640 +
1.3641 + if (obj->getSlot(JSSLOT_ITER_INDEX).toInt32() >= 0) {
1.3642 + /* Non-native case: destroy the ida enumerated when obj was created. */
1.3643 + JSIdArray *ida = (JSIdArray *) pdata;
1.3644 + fop->free_(ida);
1.3645 + }
1.3646 +}
1.3647 +
1.3648 +static void
1.3649 +prop_iter_trace(JSTracer *trc, JSObject *obj)
1.3650 +{
1.3651 + void *pdata = obj->getPrivate();
1.3652 + if (!pdata)
1.3653 + return;
1.3654 +
1.3655 + if (obj->getSlot(JSSLOT_ITER_INDEX).toInt32() < 0) {
1.3656 + /*
1.3657 + * Native case: just mark the next property to visit. We don't need a
1.3658 + * barrier here because the pointer is updated via setPrivate, which
1.3659 + * always takes a barrier.
1.3660 + */
1.3661 + Shape *tmp = static_cast<Shape *>(pdata);
1.3662 + MarkShapeUnbarriered(trc, &tmp, "prop iter shape");
1.3663 + obj->setPrivateUnbarriered(tmp);
1.3664 + } else {
1.3665 + /* Non-native case: mark each id in the JSIdArray private. */
1.3666 + JSIdArray *ida = (JSIdArray *) pdata;
1.3667 + MarkIdRange(trc, ida->length, ida->vector, "prop iter");
1.3668 + }
1.3669 +}
1.3670 +
1.3671 +static const Class prop_iter_class = {
1.3672 + "PropertyIterator",
1.3673 + JSCLASS_HAS_PRIVATE | JSCLASS_IMPLEMENTS_BARRIERS | JSCLASS_HAS_RESERVED_SLOTS(1),
1.3674 + JS_PropertyStub, /* addProperty */
1.3675 + JS_DeletePropertyStub, /* delProperty */
1.3676 + JS_PropertyStub, /* getProperty */
1.3677 + JS_StrictPropertyStub, /* setProperty */
1.3678 + JS_EnumerateStub,
1.3679 + JS_ResolveStub,
1.3680 + JS_ConvertStub,
1.3681 + prop_iter_finalize,
1.3682 + nullptr, /* call */
1.3683 + nullptr, /* hasInstance */
1.3684 + nullptr, /* construct */
1.3685 + prop_iter_trace
1.3686 +};
1.3687 +
1.3688 +JS_PUBLIC_API(JSObject *)
1.3689 +JS_NewPropertyIterator(JSContext *cx, HandleObject obj)
1.3690 +{
1.3691 + AssertHeapIsIdle(cx);
1.3692 + CHECK_REQUEST(cx);
1.3693 + assertSameCompartment(cx, obj);
1.3694 +
1.3695 + RootedObject iterobj(cx, NewObjectWithClassProto(cx, &prop_iter_class, nullptr, obj));
1.3696 + if (!iterobj)
1.3697 + return nullptr;
1.3698 +
1.3699 + int index;
1.3700 + if (obj->isNative()) {
1.3701 + /* Native case: start with the last property in obj. */
1.3702 + iterobj->setPrivateGCThing(obj->lastProperty());
1.3703 + index = -1;
1.3704 + } else {
1.3705 + /* Non-native case: enumerate a JSIdArray and keep it via private. */
1.3706 + JSIdArray *ida = JS_Enumerate(cx, obj);
1.3707 + if (!ida)
1.3708 + return nullptr;
1.3709 + iterobj->setPrivate((void *)ida);
1.3710 + index = ida->length;
1.3711 + }
1.3712 +
1.3713 + /* iterobj cannot escape to other threads here. */
1.3714 + iterobj->setSlot(JSSLOT_ITER_INDEX, Int32Value(index));
1.3715 + return iterobj;
1.3716 +}
1.3717 +
1.3718 +JS_PUBLIC_API(bool)
1.3719 +JS_NextProperty(JSContext *cx, HandleObject iterobj, jsid *idp)
1.3720 +{
1.3721 + AssertHeapIsIdle(cx);
1.3722 + CHECK_REQUEST(cx);
1.3723 + assertSameCompartment(cx, iterobj);
1.3724 + int32_t i = iterobj->getSlot(JSSLOT_ITER_INDEX).toInt32();
1.3725 + if (i < 0) {
1.3726 + /* Native case: private data is a property tree node pointer. */
1.3727 + JS_ASSERT(iterobj->getParent()->isNative());
1.3728 + Shape *shape = static_cast<Shape *>(iterobj->getPrivate());
1.3729 +
1.3730 + while (shape->previous() && !shape->enumerable())
1.3731 + shape = shape->previous();
1.3732 +
1.3733 + if (!shape->previous()) {
1.3734 + JS_ASSERT(shape->isEmptyShape());
1.3735 + *idp = JSID_VOID;
1.3736 + } else {
1.3737 + iterobj->setPrivateGCThing(const_cast<Shape *>(shape->previous().get()));
1.3738 + *idp = shape->propid();
1.3739 + }
1.3740 + } else {
1.3741 + /* Non-native case: use the ida enumerated when iterobj was created. */
1.3742 + JSIdArray *ida = (JSIdArray *) iterobj->getPrivate();
1.3743 + JS_ASSERT(i <= ida->length);
1.3744 + STATIC_ASSUME(i <= ida->length);
1.3745 + if (i == 0) {
1.3746 + *idp = JSID_VOID;
1.3747 + } else {
1.3748 + *idp = ida->vector[--i];
1.3749 + iterobj->setSlot(JSSLOT_ITER_INDEX, Int32Value(i));
1.3750 + }
1.3751 + }
1.3752 + return true;
1.3753 +}
1.3754 +
1.3755 +JS_PUBLIC_API(jsval)
1.3756 +JS_GetReservedSlot(JSObject *obj, uint32_t index)
1.3757 +{
1.3758 + return obj->getReservedSlot(index);
1.3759 +}
1.3760 +
1.3761 +JS_PUBLIC_API(void)
1.3762 +JS_SetReservedSlot(JSObject *obj, uint32_t index, Value value)
1.3763 +{
1.3764 + obj->setReservedSlot(index, value);
1.3765 +}
1.3766 +
1.3767 +JS_PUBLIC_API(JSObject *)
1.3768 +JS_NewArrayObject(JSContext *cx, const JS::HandleValueArray& contents)
1.3769 +{
1.3770 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.3771 + AssertHeapIsIdle(cx);
1.3772 + CHECK_REQUEST(cx);
1.3773 +
1.3774 + assertSameCompartment(cx, contents);
1.3775 + return NewDenseCopiedArray(cx, contents.length(), contents.begin());
1.3776 +}
1.3777 +
1.3778 +JS_PUBLIC_API(JSObject *)
1.3779 +JS_NewArrayObject(JSContext *cx, size_t length)
1.3780 +{
1.3781 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.3782 + AssertHeapIsIdle(cx);
1.3783 + CHECK_REQUEST(cx);
1.3784 +
1.3785 + return NewDenseAllocatedArray(cx, length);
1.3786 +}
1.3787 +
1.3788 +JS_PUBLIC_API(bool)
1.3789 +JS_IsArrayObject(JSContext *cx, JS::HandleObject obj)
1.3790 +{
1.3791 + assertSameCompartment(cx, obj);
1.3792 + return ObjectClassIs(obj, ESClass_Array, cx);
1.3793 +}
1.3794 +
1.3795 +JS_PUBLIC_API(bool)
1.3796 +JS_IsArrayObject(JSContext *cx, JS::HandleValue value)
1.3797 +{
1.3798 + if (!value.isObject())
1.3799 + return false;
1.3800 + RootedObject obj(cx, &value.toObject());
1.3801 + return JS_IsArrayObject(cx, obj);
1.3802 +}
1.3803 +
1.3804 +JS_PUBLIC_API(bool)
1.3805 +JS_GetArrayLength(JSContext *cx, HandleObject obj, uint32_t *lengthp)
1.3806 +{
1.3807 + AssertHeapIsIdle(cx);
1.3808 + CHECK_REQUEST(cx);
1.3809 + assertSameCompartment(cx, obj);
1.3810 + return GetLengthProperty(cx, obj, lengthp);
1.3811 +}
1.3812 +
1.3813 +JS_PUBLIC_API(bool)
1.3814 +JS_SetArrayLength(JSContext *cx, HandleObject obj, uint32_t length)
1.3815 +{
1.3816 + AssertHeapIsIdle(cx);
1.3817 + CHECK_REQUEST(cx);
1.3818 + assertSameCompartment(cx, obj);
1.3819 + return SetLengthProperty(cx, obj, length);
1.3820 +}
1.3821 +
1.3822 +JS_PUBLIC_API(void)
1.3823 +JS_HoldPrincipals(JSPrincipals *principals)
1.3824 +{
1.3825 + ++principals->refcount;
1.3826 +}
1.3827 +
1.3828 +JS_PUBLIC_API(void)
1.3829 +JS_DropPrincipals(JSRuntime *rt, JSPrincipals *principals)
1.3830 +{
1.3831 + int rc = --principals->refcount;
1.3832 + if (rc == 0)
1.3833 + rt->destroyPrincipals(principals);
1.3834 +}
1.3835 +
1.3836 +JS_PUBLIC_API(void)
1.3837 +JS_SetSecurityCallbacks(JSRuntime *rt, const JSSecurityCallbacks *scb)
1.3838 +{
1.3839 + JS_ASSERT(scb != &NullSecurityCallbacks);
1.3840 + rt->securityCallbacks = scb ? scb : &NullSecurityCallbacks;
1.3841 +}
1.3842 +
1.3843 +JS_PUBLIC_API(const JSSecurityCallbacks *)
1.3844 +JS_GetSecurityCallbacks(JSRuntime *rt)
1.3845 +{
1.3846 + return (rt->securityCallbacks != &NullSecurityCallbacks) ? rt->securityCallbacks : nullptr;
1.3847 +}
1.3848 +
1.3849 +JS_PUBLIC_API(void)
1.3850 +JS_SetTrustedPrincipals(JSRuntime *rt, const JSPrincipals *prin)
1.3851 +{
1.3852 + rt->setTrustedPrincipals(prin);
1.3853 +}
1.3854 +
1.3855 +extern JS_PUBLIC_API(void)
1.3856 +JS_InitDestroyPrincipalsCallback(JSRuntime *rt, JSDestroyPrincipalsOp destroyPrincipals)
1.3857 +{
1.3858 + JS_ASSERT(destroyPrincipals);
1.3859 + JS_ASSERT(!rt->destroyPrincipals);
1.3860 + rt->destroyPrincipals = destroyPrincipals;
1.3861 +}
1.3862 +
1.3863 +JS_PUBLIC_API(JSFunction *)
1.3864 +JS_NewFunction(JSContext *cx, JSNative native, unsigned nargs, unsigned flags,
1.3865 + HandleObject parent, const char *name)
1.3866 +{
1.3867 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.3868 +
1.3869 + AssertHeapIsIdle(cx);
1.3870 + CHECK_REQUEST(cx);
1.3871 + assertSameCompartment(cx, parent);
1.3872 +
1.3873 + RootedAtom atom(cx);
1.3874 + if (name) {
1.3875 + atom = Atomize(cx, name, strlen(name));
1.3876 + if (!atom)
1.3877 + return nullptr;
1.3878 + }
1.3879 +
1.3880 + JSFunction::Flags funFlags = JSAPIToJSFunctionFlags(flags);
1.3881 + return NewFunction(cx, NullPtr(), native, nargs, funFlags, parent, atom);
1.3882 +}
1.3883 +
1.3884 +JS_PUBLIC_API(JSFunction *)
1.3885 +JS_NewFunctionById(JSContext *cx, JSNative native, unsigned nargs, unsigned flags,
1.3886 + HandleObject parent, HandleId id)
1.3887 +{
1.3888 + JS_ASSERT(JSID_IS_STRING(id));
1.3889 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.3890 + JS_ASSERT(native);
1.3891 + AssertHeapIsIdle(cx);
1.3892 + CHECK_REQUEST(cx);
1.3893 + assertSameCompartment(cx, parent);
1.3894 +
1.3895 + RootedAtom name(cx, JSID_TO_ATOM(id));
1.3896 + JSFunction::Flags funFlags = JSAPIToJSFunctionFlags(flags);
1.3897 + return NewFunction(cx, NullPtr(), native, nargs, funFlags, parent, name);
1.3898 +}
1.3899 +
1.3900 +JS_PUBLIC_API(JSFunction *)
1.3901 +JS::GetSelfHostedFunction(JSContext *cx, const char *selfHostedName, HandleId id, unsigned nargs)
1.3902 +{
1.3903 + JS_ASSERT(JSID_IS_STRING(id));
1.3904 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.3905 + AssertHeapIsIdle(cx);
1.3906 + CHECK_REQUEST(cx);
1.3907 +
1.3908 + RootedAtom name(cx, JSID_TO_ATOM(id));
1.3909 + RootedAtom shName(cx, Atomize(cx, selfHostedName, strlen(selfHostedName)));
1.3910 + if (!shName)
1.3911 + return nullptr;
1.3912 + RootedValue funVal(cx);
1.3913 + if (!cx->global()->getSelfHostedFunction(cx, shName, name, nargs, &funVal))
1.3914 + return nullptr;
1.3915 + return &funVal.toObject().as<JSFunction>();
1.3916 +}
1.3917 +
1.3918 +JS_PUBLIC_API(JSObject *)
1.3919 +JS_CloneFunctionObject(JSContext *cx, HandleObject funobj, HandleObject parentArg)
1.3920 +{
1.3921 + RootedObject parent(cx, parentArg);
1.3922 +
1.3923 + AssertHeapIsIdle(cx);
1.3924 + CHECK_REQUEST(cx);
1.3925 + assertSameCompartment(cx, parent);
1.3926 + // Note that funobj can be in a different compartment.
1.3927 +
1.3928 + if (!parent)
1.3929 + parent = cx->global();
1.3930 +
1.3931 + if (!funobj->is<JSFunction>()) {
1.3932 + AutoCompartment ac(cx, funobj);
1.3933 + RootedValue v(cx, ObjectValue(*funobj));
1.3934 + ReportIsNotFunction(cx, v);
1.3935 + return nullptr;
1.3936 + }
1.3937 +
1.3938 + RootedFunction fun(cx, &funobj->as<JSFunction>());
1.3939 + if (fun->isInterpretedLazy()) {
1.3940 + AutoCompartment ac(cx, funobj);
1.3941 + if (!fun->getOrCreateScript(cx))
1.3942 + return nullptr;
1.3943 + }
1.3944 + /*
1.3945 + * If a function was compiled to be lexically nested inside some other
1.3946 + * script, we cannot clone it without breaking the compiler's assumptions.
1.3947 + */
1.3948 + if (fun->isInterpreted() && (fun->nonLazyScript()->enclosingStaticScope() ||
1.3949 + (fun->nonLazyScript()->compileAndGo() && !parent->is<GlobalObject>())))
1.3950 + {
1.3951 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_BAD_CLONE_FUNOBJ_SCOPE);
1.3952 + return nullptr;
1.3953 + }
1.3954 +
1.3955 + if (fun->isBoundFunction()) {
1.3956 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_CANT_CLONE_OBJECT);
1.3957 + return nullptr;
1.3958 + }
1.3959 +
1.3960 + if (fun->isNative() && IsAsmJSModuleNative(fun->native())) {
1.3961 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_CANT_CLONE_OBJECT);
1.3962 + return nullptr;
1.3963 + }
1.3964 +
1.3965 + return CloneFunctionObject(cx, fun, parent, fun->getAllocKind());
1.3966 +}
1.3967 +
1.3968 +JS_PUBLIC_API(JSObject *)
1.3969 +JS_GetFunctionObject(JSFunction *fun)
1.3970 +{
1.3971 + return fun;
1.3972 +}
1.3973 +
1.3974 +JS_PUBLIC_API(JSString *)
1.3975 +JS_GetFunctionId(JSFunction *fun)
1.3976 +{
1.3977 + return fun->atom();
1.3978 +}
1.3979 +
1.3980 +JS_PUBLIC_API(JSString *)
1.3981 +JS_GetFunctionDisplayId(JSFunction *fun)
1.3982 +{
1.3983 + return fun->displayAtom();
1.3984 +}
1.3985 +
1.3986 +JS_PUBLIC_API(uint16_t)
1.3987 +JS_GetFunctionArity(JSFunction *fun)
1.3988 +{
1.3989 + return fun->nargs();
1.3990 +}
1.3991 +
1.3992 +JS_PUBLIC_API(bool)
1.3993 +JS_ObjectIsFunction(JSContext *cx, JSObject *obj)
1.3994 +{
1.3995 + return obj->is<JSFunction>();
1.3996 +}
1.3997 +
1.3998 +JS_PUBLIC_API(bool)
1.3999 +JS_ObjectIsCallable(JSContext *cx, JSObject *obj)
1.4000 +{
1.4001 + return obj->isCallable();
1.4002 +}
1.4003 +
1.4004 +JS_PUBLIC_API(bool)
1.4005 +JS_IsNativeFunction(JSObject *funobj, JSNative call)
1.4006 +{
1.4007 + if (!funobj->is<JSFunction>())
1.4008 + return false;
1.4009 + JSFunction *fun = &funobj->as<JSFunction>();
1.4010 + return fun->isNative() && fun->native() == call;
1.4011 +}
1.4012 +
1.4013 +extern JS_PUBLIC_API(bool)
1.4014 +JS_IsConstructor(JSFunction *fun)
1.4015 +{
1.4016 + return fun->isNativeConstructor() || fun->isInterpretedConstructor();
1.4017 +}
1.4018 +
1.4019 +JS_PUBLIC_API(JSObject*)
1.4020 +JS_BindCallable(JSContext *cx, HandleObject target, HandleObject newThis)
1.4021 +{
1.4022 + RootedValue thisArg(cx, ObjectValue(*newThis));
1.4023 + return js_fun_bind(cx, target, thisArg, nullptr, 0);
1.4024 +}
1.4025 +
1.4026 +static bool
1.4027 +js_generic_native_method_dispatcher(JSContext *cx, unsigned argc, Value *vp)
1.4028 +{
1.4029 + CallArgs args = CallArgsFromVp(argc, vp);
1.4030 +
1.4031 + const JSFunctionSpec *fs = (JSFunctionSpec *)
1.4032 + args.callee().as<JSFunction>().getExtendedSlot(0).toPrivate();
1.4033 + JS_ASSERT((fs->flags & JSFUN_GENERIC_NATIVE) != 0);
1.4034 +
1.4035 + if (argc < 1) {
1.4036 + js_ReportMissingArg(cx, args.calleev(), 0);
1.4037 + return false;
1.4038 + }
1.4039 +
1.4040 + /*
1.4041 + * Copy all actual (argc) arguments down over our |this| parameter, vp[1],
1.4042 + * which is almost always the class constructor object, e.g. Array. Then
1.4043 + * call the corresponding prototype native method with our first argument
1.4044 + * passed as |this|.
1.4045 + */
1.4046 + memmove(vp + 1, vp + 2, argc * sizeof(jsval));
1.4047 +
1.4048 + /* Clear the last parameter in case too few arguments were passed. */
1.4049 + vp[2 + --argc].setUndefined();
1.4050 +
1.4051 + return fs->call.op(cx, argc, vp);
1.4052 +}
1.4053 +
1.4054 +JS_PUBLIC_API(bool)
1.4055 +JS_DefineFunctions(JSContext *cx, HandleObject obj, const JSFunctionSpec *fs)
1.4056 +{
1.4057 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4058 + AssertHeapIsIdle(cx);
1.4059 + CHECK_REQUEST(cx);
1.4060 + assertSameCompartment(cx, obj);
1.4061 +
1.4062 + RootedObject ctor(cx);
1.4063 +
1.4064 + for (; fs->name; fs++) {
1.4065 + RootedAtom atom(cx);
1.4066 + // If the name starts with "@@", it must be a well-known symbol.
1.4067 + if (fs->name[0] != '@' || fs->name[1] != '@')
1.4068 + atom = Atomize(cx, fs->name, strlen(fs->name));
1.4069 + else if (strcmp(fs->name, "@@iterator") == 0)
1.4070 + // FIXME: This atom should be a symbol: bug 918828.
1.4071 + atom = cx->names().std_iterator;
1.4072 + else
1.4073 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_BAD_SYMBOL, fs->name);
1.4074 + if (!atom)
1.4075 + return false;
1.4076 +
1.4077 + Rooted<jsid> id(cx, AtomToId(atom));
1.4078 +
1.4079 + /*
1.4080 + * Define a generic arity N+1 static method for the arity N prototype
1.4081 + * method if flags contains JSFUN_GENERIC_NATIVE.
1.4082 + */
1.4083 + unsigned flags = fs->flags;
1.4084 + if (flags & JSFUN_GENERIC_NATIVE) {
1.4085 + if (!ctor) {
1.4086 + ctor = JS_GetConstructor(cx, obj);
1.4087 + if (!ctor)
1.4088 + return false;
1.4089 + }
1.4090 +
1.4091 + flags &= ~JSFUN_GENERIC_NATIVE;
1.4092 + JSFunction *fun = DefineFunction(cx, ctor, id,
1.4093 + js_generic_native_method_dispatcher,
1.4094 + fs->nargs + 1, flags,
1.4095 + JSFunction::ExtendedFinalizeKind);
1.4096 + if (!fun)
1.4097 + return false;
1.4098 +
1.4099 + /*
1.4100 + * As jsapi.h notes, fs must point to storage that lives as long
1.4101 + * as fun->object lives.
1.4102 + */
1.4103 + fun->setExtendedSlot(0, PrivateValue(const_cast<JSFunctionSpec*>(fs)));
1.4104 + }
1.4105 +
1.4106 + /*
1.4107 + * Delay cloning self-hosted functions until they are called. This is
1.4108 + * achieved by passing DefineFunction a nullptr JSNative which
1.4109 + * produces an interpreted JSFunction where !hasScript. Interpreted
1.4110 + * call paths then call InitializeLazyFunctionScript if !hasScript.
1.4111 + */
1.4112 + if (fs->selfHostedName) {
1.4113 + JS_ASSERT(!fs->call.op);
1.4114 + JS_ASSERT(!fs->call.info);
1.4115 + /*
1.4116 + * During creation of the self-hosting global, we ignore all
1.4117 + * self-hosted functions, as that means we're currently setting up
1.4118 + * the global object that the self-hosted code is then compiled
1.4119 + * in. Self-hosted functions can access each other via their names,
1.4120 + * but not via the builtin classes they get installed into.
1.4121 + */
1.4122 + if (cx->runtime()->isSelfHostingGlobal(cx->global()))
1.4123 + continue;
1.4124 +
1.4125 + RootedAtom shName(cx, Atomize(cx, fs->selfHostedName, strlen(fs->selfHostedName)));
1.4126 + if (!shName)
1.4127 + return false;
1.4128 + RootedValue funVal(cx);
1.4129 + if (!cx->global()->getSelfHostedFunction(cx, shName, atom, fs->nargs, &funVal))
1.4130 + return false;
1.4131 + if (!JSObject::defineGeneric(cx, obj, id, funVal, nullptr, nullptr, flags))
1.4132 + return false;
1.4133 + } else {
1.4134 + JSFunction *fun = DefineFunction(cx, obj, id, fs->call.op, fs->nargs, flags);
1.4135 + if (!fun)
1.4136 + return false;
1.4137 + if (fs->call.info)
1.4138 + fun->setJitInfo(fs->call.info);
1.4139 + }
1.4140 + }
1.4141 + return true;
1.4142 +}
1.4143 +
1.4144 +JS_PUBLIC_API(JSFunction *)
1.4145 +JS_DefineFunction(JSContext *cx, HandleObject obj, const char *name, JSNative call,
1.4146 + unsigned nargs, unsigned attrs)
1.4147 +{
1.4148 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4149 + AssertHeapIsIdle(cx);
1.4150 + CHECK_REQUEST(cx);
1.4151 + assertSameCompartment(cx, obj);
1.4152 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.4153 + if (!atom)
1.4154 + return nullptr;
1.4155 + Rooted<jsid> id(cx, AtomToId(atom));
1.4156 + return DefineFunction(cx, obj, id, call, nargs, attrs);
1.4157 +}
1.4158 +
1.4159 +JS_PUBLIC_API(JSFunction *)
1.4160 +JS_DefineUCFunction(JSContext *cx, HandleObject obj,
1.4161 + const jschar *name, size_t namelen, JSNative call,
1.4162 + unsigned nargs, unsigned attrs)
1.4163 +{
1.4164 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4165 + AssertHeapIsIdle(cx);
1.4166 + CHECK_REQUEST(cx);
1.4167 + assertSameCompartment(cx, obj);
1.4168 + JSAtom *atom = AtomizeChars(cx, name, AUTO_NAMELEN(name, namelen));
1.4169 + if (!atom)
1.4170 + return nullptr;
1.4171 + Rooted<jsid> id(cx, AtomToId(atom));
1.4172 + return DefineFunction(cx, obj, id, call, nargs, attrs);
1.4173 +}
1.4174 +
1.4175 +extern JS_PUBLIC_API(JSFunction *)
1.4176 +JS_DefineFunctionById(JSContext *cx, HandleObject obj, HandleId id, JSNative call,
1.4177 + unsigned nargs, unsigned attrs)
1.4178 +{
1.4179 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4180 + AssertHeapIsIdle(cx);
1.4181 + CHECK_REQUEST(cx);
1.4182 + assertSameCompartment(cx, obj);
1.4183 + return DefineFunction(cx, obj, id, call, nargs, attrs);
1.4184 +}
1.4185 +
1.4186 +struct AutoLastFrameCheck
1.4187 +{
1.4188 + AutoLastFrameCheck(JSContext *cx
1.4189 + MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
1.4190 + : cx(cx)
1.4191 + {
1.4192 + JS_ASSERT(cx);
1.4193 + MOZ_GUARD_OBJECT_NOTIFIER_INIT;
1.4194 + }
1.4195 +
1.4196 + ~AutoLastFrameCheck() {
1.4197 + if (cx->isExceptionPending() &&
1.4198 + !JS_IsRunning(cx) &&
1.4199 + !cx->options().dontReportUncaught()) {
1.4200 + js_ReportUncaughtException(cx);
1.4201 + }
1.4202 + }
1.4203 +
1.4204 + private:
1.4205 + JSContext *cx;
1.4206 + MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
1.4207 +};
1.4208 +
1.4209 +/* Use the fastest available getc. */
1.4210 +#if defined(HAVE_GETC_UNLOCKED)
1.4211 +# define fast_getc getc_unlocked
1.4212 +#elif defined(HAVE__GETC_NOLOCK)
1.4213 +# define fast_getc _getc_nolock
1.4214 +#else
1.4215 +# define fast_getc getc
1.4216 +#endif
1.4217 +
1.4218 +typedef js::Vector<char, 8, TempAllocPolicy> FileContents;
1.4219 +
1.4220 +static bool
1.4221 +ReadCompleteFile(JSContext *cx, FILE *fp, FileContents &buffer)
1.4222 +{
1.4223 + /* Get the complete length of the file, if possible. */
1.4224 + struct stat st;
1.4225 + int ok = fstat(fileno(fp), &st);
1.4226 + if (ok != 0)
1.4227 + return false;
1.4228 + if (st.st_size > 0) {
1.4229 + if (!buffer.reserve(st.st_size))
1.4230 + return false;
1.4231 + }
1.4232 +
1.4233 + // Read in the whole file. Note that we can't assume the data's length
1.4234 + // is actually st.st_size, because 1) some files lie about their size
1.4235 + // (/dev/zero and /dev/random), and 2) reading files in text mode on
1.4236 + // Windows collapses "\r\n" pairs to single \n characters.
1.4237 + for (;;) {
1.4238 + int c = fast_getc(fp);
1.4239 + if (c == EOF)
1.4240 + break;
1.4241 + if (!buffer.append(c))
1.4242 + return false;
1.4243 + }
1.4244 +
1.4245 + return true;
1.4246 +}
1.4247 +
1.4248 +namespace {
1.4249 +
1.4250 +class AutoFile
1.4251 +{
1.4252 + FILE *fp_;
1.4253 + public:
1.4254 + AutoFile()
1.4255 + : fp_(nullptr)
1.4256 + {}
1.4257 + ~AutoFile()
1.4258 + {
1.4259 + if (fp_ && fp_ != stdin)
1.4260 + fclose(fp_);
1.4261 + }
1.4262 + FILE *fp() const { return fp_; }
1.4263 + bool open(JSContext *cx, const char *filename);
1.4264 + bool readAll(JSContext *cx, FileContents &buffer)
1.4265 + {
1.4266 + JS_ASSERT(fp_);
1.4267 + return ReadCompleteFile(cx, fp_, buffer);
1.4268 + }
1.4269 +};
1.4270 +
1.4271 +} /* anonymous namespace */
1.4272 +
1.4273 +/*
1.4274 + * Open a source file for reading. Supports "-" and nullptr to mean stdin. The
1.4275 + * return value must be fclosed unless it is stdin.
1.4276 + */
1.4277 +bool
1.4278 +AutoFile::open(JSContext *cx, const char *filename)
1.4279 +{
1.4280 + if (!filename || strcmp(filename, "-") == 0) {
1.4281 + fp_ = stdin;
1.4282 + } else {
1.4283 + fp_ = fopen(filename, "r");
1.4284 + if (!fp_) {
1.4285 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_CANT_OPEN,
1.4286 + filename, "No such file or directory");
1.4287 + return false;
1.4288 + }
1.4289 + }
1.4290 + return true;
1.4291 +}
1.4292 +
1.4293 +JSObject * const JS::ReadOnlyCompileOptions::nullObjectPtr = nullptr;
1.4294 +
1.4295 +void
1.4296 +JS::ReadOnlyCompileOptions::copyPODOptions(const ReadOnlyCompileOptions &rhs)
1.4297 +{
1.4298 + version = rhs.version;
1.4299 + versionSet = rhs.versionSet;
1.4300 + utf8 = rhs.utf8;
1.4301 + lineno = rhs.lineno;
1.4302 + column = rhs.column;
1.4303 + compileAndGo = rhs.compileAndGo;
1.4304 + forEval = rhs.forEval;
1.4305 + noScriptRval = rhs.noScriptRval;
1.4306 + selfHostingMode = rhs.selfHostingMode;
1.4307 + canLazilyParse = rhs.canLazilyParse;
1.4308 + strictOption = rhs.strictOption;
1.4309 + extraWarningsOption = rhs.extraWarningsOption;
1.4310 + werrorOption = rhs.werrorOption;
1.4311 + asmJSOption = rhs.asmJSOption;
1.4312 + forceAsync = rhs.forceAsync;
1.4313 + installedFile = rhs.installedFile;
1.4314 + sourceIsLazy = rhs.sourceIsLazy;
1.4315 + introductionType = rhs.introductionType;
1.4316 + introductionLineno = rhs.introductionLineno;
1.4317 + introductionOffset = rhs.introductionOffset;
1.4318 + hasIntroductionInfo = rhs.hasIntroductionInfo;
1.4319 +}
1.4320 +
1.4321 +JSPrincipals *
1.4322 +JS::ReadOnlyCompileOptions::originPrincipals(ExclusiveContext *cx) const
1.4323 +{
1.4324 + return NormalizeOriginPrincipals(cx->compartment()->principals, originPrincipals_);
1.4325 +}
1.4326 +
1.4327 +JS::OwningCompileOptions::OwningCompileOptions(JSContext *cx)
1.4328 + : ReadOnlyCompileOptions(),
1.4329 + runtime(GetRuntime(cx)),
1.4330 + elementRoot(cx),
1.4331 + elementAttributeNameRoot(cx),
1.4332 + introductionScriptRoot(cx)
1.4333 +{
1.4334 +}
1.4335 +
1.4336 +JS::OwningCompileOptions::~OwningCompileOptions()
1.4337 +{
1.4338 + if (originPrincipals_)
1.4339 + JS_DropPrincipals(runtime, originPrincipals_);
1.4340 +
1.4341 + // OwningCompileOptions always owns these, so these casts are okay.
1.4342 + js_free(const_cast<char *>(filename_));
1.4343 + js_free(const_cast<jschar *>(sourceMapURL_));
1.4344 + js_free(const_cast<char *>(introducerFilename_));
1.4345 +}
1.4346 +
1.4347 +bool
1.4348 +JS::OwningCompileOptions::copy(JSContext *cx, const ReadOnlyCompileOptions &rhs)
1.4349 +{
1.4350 + copyPODOptions(rhs);
1.4351 +
1.4352 + setOriginPrincipals(rhs.originPrincipals(cx));
1.4353 + setElement(rhs.element());
1.4354 + setElementAttributeName(rhs.elementAttributeName());
1.4355 + setIntroductionScript(rhs.introductionScript());
1.4356 +
1.4357 + return (setFileAndLine(cx, rhs.filename(), rhs.lineno) &&
1.4358 + setSourceMapURL(cx, rhs.sourceMapURL()) &&
1.4359 + setIntroducerFilename(cx, rhs.introducerFilename()));
1.4360 +}
1.4361 +
1.4362 +bool
1.4363 +JS::OwningCompileOptions::setFile(JSContext *cx, const char *f)
1.4364 +{
1.4365 + char *copy = nullptr;
1.4366 + if (f) {
1.4367 + copy = JS_strdup(cx, f);
1.4368 + if (!copy)
1.4369 + return false;
1.4370 + }
1.4371 +
1.4372 + // OwningCompileOptions always owns filename_, so this cast is okay.
1.4373 + js_free(const_cast<char *>(filename_));
1.4374 +
1.4375 + filename_ = copy;
1.4376 + return true;
1.4377 +}
1.4378 +
1.4379 +bool
1.4380 +JS::OwningCompileOptions::setFileAndLine(JSContext *cx, const char *f, unsigned l)
1.4381 +{
1.4382 + if (!setFile(cx, f))
1.4383 + return false;
1.4384 +
1.4385 + lineno = l;
1.4386 + return true;
1.4387 +}
1.4388 +
1.4389 +bool
1.4390 +JS::OwningCompileOptions::setSourceMapURL(JSContext *cx, const jschar *s)
1.4391 +{
1.4392 + jschar *copy = nullptr;
1.4393 + if (s) {
1.4394 + copy = js_strdup(cx, s);
1.4395 + if (!copy)
1.4396 + return false;
1.4397 + }
1.4398 +
1.4399 + // OwningCompileOptions always owns sourceMapURL_, so this cast is okay.
1.4400 + js_free(const_cast<jschar *>(sourceMapURL_));
1.4401 +
1.4402 + sourceMapURL_ = copy;
1.4403 + return true;
1.4404 +}
1.4405 +
1.4406 +bool
1.4407 +JS::OwningCompileOptions::setIntroducerFilename(JSContext *cx, const char *s)
1.4408 +{
1.4409 + char *copy = nullptr;
1.4410 + if (s) {
1.4411 + copy = JS_strdup(cx, s);
1.4412 + if (!copy)
1.4413 + return false;
1.4414 + }
1.4415 +
1.4416 + // OwningCompileOptions always owns introducerFilename_, so this cast is okay.
1.4417 + js_free(const_cast<char *>(introducerFilename_));
1.4418 +
1.4419 + introducerFilename_ = copy;
1.4420 + return true;
1.4421 +}
1.4422 +
1.4423 +bool
1.4424 +JS::OwningCompileOptions::wrap(JSContext *cx, JSCompartment *compartment)
1.4425 +{
1.4426 + if (!compartment->wrap(cx, &elementRoot))
1.4427 + return false;
1.4428 + if (elementAttributeNameRoot) {
1.4429 + if (!compartment->wrap(cx, elementAttributeNameRoot.address()))
1.4430 + return false;
1.4431 + }
1.4432 +
1.4433 + // There is no equivalent of cross-compartment wrappers for scripts. If
1.4434 + // the introduction script would be in a different compartment from the
1.4435 + // compiled code, we would be creating a cross-compartment script
1.4436 + // reference, which would be bogus. In that case, just don't bother to
1.4437 + // retain the introduction script.
1.4438 + if (introductionScriptRoot) {
1.4439 + if (introductionScriptRoot->compartment() != compartment)
1.4440 + introductionScriptRoot = nullptr;
1.4441 + }
1.4442 +
1.4443 + return true;
1.4444 +}
1.4445 +
1.4446 +JS::CompileOptions::CompileOptions(JSContext *cx, JSVersion version)
1.4447 + : ReadOnlyCompileOptions(), elementRoot(cx), elementAttributeNameRoot(cx),
1.4448 + introductionScriptRoot(cx)
1.4449 +{
1.4450 + this->version = (version != JSVERSION_UNKNOWN) ? version : cx->findVersion();
1.4451 +
1.4452 + compileAndGo = false;
1.4453 + noScriptRval = cx->options().noScriptRval();
1.4454 + strictOption = cx->options().strictMode();
1.4455 + extraWarningsOption = cx->options().extraWarnings();
1.4456 + werrorOption = cx->options().werror();
1.4457 + asmJSOption = cx->runtime()->options().asmJS();
1.4458 +}
1.4459 +
1.4460 +bool
1.4461 +JS::CompileOptions::wrap(JSContext *cx, JSCompartment *compartment)
1.4462 +{
1.4463 + if (!compartment->wrap(cx, &elementRoot))
1.4464 + return false;
1.4465 + if (elementAttributeNameRoot) {
1.4466 + if (!compartment->wrap(cx, elementAttributeNameRoot.address()))
1.4467 + return false;
1.4468 + }
1.4469 +
1.4470 + // There is no equivalent of cross-compartment wrappers for scripts. If
1.4471 + // the introduction script would be in a different compartment from the
1.4472 + // compiled code, we would be creating a cross-compartment script
1.4473 + // reference, which would be bogus. In that case, just don't bother to
1.4474 + // retain the introduction script.
1.4475 + if (introductionScriptRoot) {
1.4476 + if (introductionScriptRoot->compartment() != compartment)
1.4477 + introductionScriptRoot = nullptr;
1.4478 + }
1.4479 +
1.4480 + return true;
1.4481 +}
1.4482 +
1.4483 +bool
1.4484 +JS::Compile(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4485 + SourceBufferHolder &srcBuf, MutableHandleScript script)
1.4486 +{
1.4487 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4488 + AssertHeapIsIdle(cx);
1.4489 + CHECK_REQUEST(cx);
1.4490 + assertSameCompartment(cx, obj);
1.4491 + AutoLastFrameCheck lfc(cx);
1.4492 +
1.4493 + script.set(frontend::CompileScript(cx, &cx->tempLifoAlloc(), obj, NullPtr(), options, srcBuf));
1.4494 + return !!script;
1.4495 +}
1.4496 +
1.4497 +JSScript *
1.4498 +JS::Compile(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4499 + const jschar *chars, size_t length)
1.4500 +{
1.4501 + SourceBufferHolder srcBuf(chars, length, SourceBufferHolder::NoOwnership);
1.4502 + RootedScript script(cx);
1.4503 + if (!Compile(cx, obj, options, srcBuf, &script))
1.4504 + return nullptr;
1.4505 + return script;
1.4506 +}
1.4507 +
1.4508 +JSScript *
1.4509 +JS::Compile(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4510 + const char *bytes, size_t length)
1.4511 +{
1.4512 + jschar *chars;
1.4513 + if (options.utf8)
1.4514 + chars = UTF8CharsToNewTwoByteCharsZ(cx, UTF8Chars(bytes, length), &length).get();
1.4515 + else
1.4516 + chars = InflateString(cx, bytes, &length);
1.4517 + if (!chars)
1.4518 + return nullptr;
1.4519 +
1.4520 + JSScript *script = Compile(cx, obj, options, chars, length);
1.4521 + js_free(chars);
1.4522 + return script;
1.4523 +}
1.4524 +
1.4525 +JSScript *
1.4526 +JS::Compile(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options, FILE *fp)
1.4527 +{
1.4528 + FileContents buffer(cx);
1.4529 + if (!ReadCompleteFile(cx, fp, buffer))
1.4530 + return nullptr;
1.4531 +
1.4532 + JSScript *script = Compile(cx, obj, options, buffer.begin(), buffer.length());
1.4533 + return script;
1.4534 +}
1.4535 +
1.4536 +JSScript *
1.4537 +JS::Compile(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg, const char *filename)
1.4538 +{
1.4539 + AutoFile file;
1.4540 + if (!file.open(cx, filename))
1.4541 + return nullptr;
1.4542 + CompileOptions options(cx, optionsArg);
1.4543 + options.setFileAndLine(filename, 1);
1.4544 + return Compile(cx, obj, options, file.fp());
1.4545 +}
1.4546 +
1.4547 +JS_PUBLIC_API(bool)
1.4548 +JS::CanCompileOffThread(JSContext *cx, const ReadOnlyCompileOptions &options, size_t length)
1.4549 +{
1.4550 + static const size_t TINY_LENGTH = 1000;
1.4551 + static const size_t HUGE_LENGTH = 100 * 1000;
1.4552 +
1.4553 + // These are heuristics which the caller may choose to ignore (e.g., for
1.4554 + // testing purposes).
1.4555 + if (!options.forceAsync) {
1.4556 + // Compiling off the main thread inolves creating a new Zone and other
1.4557 + // significant overheads. Don't bother if the script is tiny.
1.4558 + if (length < TINY_LENGTH)
1.4559 + return false;
1.4560 +
1.4561 +#ifdef JS_THREADSAFE
1.4562 + // If the parsing task would have to wait for GC to complete, it'll probably
1.4563 + // be faster to just start it synchronously on the main thread unless the
1.4564 + // script is huge.
1.4565 + if (OffThreadParsingMustWaitForGC(cx->runtime()) && length < HUGE_LENGTH)
1.4566 + return false;
1.4567 +#endif // JS_THREADSAFE
1.4568 + }
1.4569 +
1.4570 + return cx->runtime()->canUseParallelParsing();
1.4571 +}
1.4572 +
1.4573 +JS_PUBLIC_API(bool)
1.4574 +JS::CompileOffThread(JSContext *cx, const ReadOnlyCompileOptions &options,
1.4575 + const jschar *chars, size_t length,
1.4576 + OffThreadCompileCallback callback, void *callbackData)
1.4577 +{
1.4578 + JS_ASSERT(CanCompileOffThread(cx, options, length));
1.4579 + return StartOffThreadParseScript(cx, options, chars, length, callback, callbackData);
1.4580 +}
1.4581 +
1.4582 +JS_PUBLIC_API(JSScript *)
1.4583 +JS::FinishOffThreadScript(JSContext *maybecx, JSRuntime *rt, void *token)
1.4584 +{
1.4585 +#ifdef JS_THREADSAFE
1.4586 + JS_ASSERT(CurrentThreadCanAccessRuntime(rt));
1.4587 +
1.4588 + if (maybecx) {
1.4589 + RootedScript script(maybecx);
1.4590 + {
1.4591 + AutoLastFrameCheck lfc(maybecx);
1.4592 + script = WorkerThreadState().finishParseTask(maybecx, rt, token);
1.4593 + }
1.4594 + return script;
1.4595 + } else {
1.4596 + return WorkerThreadState().finishParseTask(maybecx, rt, token);
1.4597 + }
1.4598 +#else
1.4599 + MOZ_ASSUME_UNREACHABLE("Off thread compilation is not available.");
1.4600 +#endif
1.4601 +}
1.4602 +
1.4603 +JS_PUBLIC_API(JSScript *)
1.4604 +JS_CompileScript(JSContext *cx, JS::HandleObject obj, const char *ascii,
1.4605 + size_t length, const JS::CompileOptions &options)
1.4606 +{
1.4607 + return Compile(cx, obj, options, ascii, length);
1.4608 +}
1.4609 +
1.4610 +JS_PUBLIC_API(JSScript *)
1.4611 +JS_CompileUCScript(JSContext *cx, JS::HandleObject obj, const jschar *chars,
1.4612 + size_t length, const JS::CompileOptions &options)
1.4613 +{
1.4614 + return Compile(cx, obj, options, chars, length);
1.4615 +}
1.4616 +
1.4617 +JS_PUBLIC_API(bool)
1.4618 +JS_BufferIsCompilableUnit(JSContext *cx, HandleObject obj, const char *utf8, size_t length)
1.4619 +{
1.4620 + AssertHeapIsIdle(cx);
1.4621 + CHECK_REQUEST(cx);
1.4622 + assertSameCompartment(cx, obj);
1.4623 +
1.4624 + cx->clearPendingException();
1.4625 +
1.4626 + jschar *chars = JS::UTF8CharsToNewTwoByteCharsZ(cx, JS::UTF8Chars(utf8, length), &length).get();
1.4627 + if (!chars)
1.4628 + return true;
1.4629 +
1.4630 + // Return true on any out-of-memory error or non-EOF-related syntax error, so our
1.4631 + // caller doesn't try to collect more buffered source.
1.4632 + bool result = true;
1.4633 +
1.4634 + CompileOptions options(cx);
1.4635 + options.setCompileAndGo(false);
1.4636 + Parser<frontend::FullParseHandler> parser(cx, &cx->tempLifoAlloc(),
1.4637 + options, chars, length,
1.4638 + /* foldConstants = */ true, nullptr, nullptr);
1.4639 + JSErrorReporter older = JS_SetErrorReporter(cx, nullptr);
1.4640 + if (!parser.parse(obj)) {
1.4641 + // We ran into an error. If it was because we ran out of source, we
1.4642 + // return false so our caller knows to try to collect more buffered
1.4643 + // source.
1.4644 + if (parser.isUnexpectedEOF())
1.4645 + result = false;
1.4646 +
1.4647 + cx->clearPendingException();
1.4648 + }
1.4649 + JS_SetErrorReporter(cx, older);
1.4650 +
1.4651 + js_free(chars);
1.4652 + return result;
1.4653 +}
1.4654 +
1.4655 +JS_PUBLIC_API(JSObject *)
1.4656 +JS_GetGlobalFromScript(JSScript *script)
1.4657 +{
1.4658 + JS_ASSERT(!script->isCachedEval());
1.4659 + return &script->global();
1.4660 +}
1.4661 +
1.4662 +JS_PUBLIC_API(bool)
1.4663 +JS::CompileFunction(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4664 + const char *name, unsigned nargs, const char *const *argnames,
1.4665 + SourceBufferHolder &srcBuf, MutableHandleFunction fun)
1.4666 +{
1.4667 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4668 + AssertHeapIsIdle(cx);
1.4669 + CHECK_REQUEST(cx);
1.4670 + assertSameCompartment(cx, obj);
1.4671 + RootedAtom funAtom(cx);
1.4672 + AutoLastFrameCheck lfc(cx);
1.4673 +
1.4674 + if (name) {
1.4675 + funAtom = Atomize(cx, name, strlen(name));
1.4676 + if (!funAtom)
1.4677 + return false;
1.4678 + }
1.4679 +
1.4680 + AutoNameVector formals(cx);
1.4681 + for (unsigned i = 0; i < nargs; i++) {
1.4682 + RootedAtom argAtom(cx, Atomize(cx, argnames[i], strlen(argnames[i])));
1.4683 + if (!argAtom || !formals.append(argAtom->asPropertyName()))
1.4684 + return false;
1.4685 + }
1.4686 +
1.4687 + fun.set(NewFunction(cx, NullPtr(), nullptr, 0, JSFunction::INTERPRETED, obj,
1.4688 + funAtom, JSFunction::FinalizeKind, TenuredObject));
1.4689 + if (!fun)
1.4690 + return false;
1.4691 +
1.4692 + if (!frontend::CompileFunctionBody(cx, fun, options, formals, srcBuf))
1.4693 + return false;
1.4694 +
1.4695 + if (obj && funAtom && options.defineOnScope) {
1.4696 + Rooted<jsid> id(cx, AtomToId(funAtom));
1.4697 + RootedValue value(cx, ObjectValue(*fun));
1.4698 + if (!JSObject::defineGeneric(cx, obj, id, value, nullptr, nullptr, JSPROP_ENUMERATE))
1.4699 + return false;
1.4700 + }
1.4701 +
1.4702 + return true;
1.4703 +}
1.4704 +
1.4705 +JS_PUBLIC_API(JSFunction *)
1.4706 +JS::CompileFunction(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4707 + const char *name, unsigned nargs, const char *const *argnames,
1.4708 + const jschar *chars, size_t length)
1.4709 +{
1.4710 + RootedFunction fun(cx);
1.4711 + SourceBufferHolder srcBuf(chars, length, SourceBufferHolder::NoOwnership);
1.4712 + if (!JS::CompileFunction(cx, obj, options, name, nargs, argnames, srcBuf, &fun))
1.4713 + return nullptr;
1.4714 + return fun;
1.4715 +}
1.4716 +
1.4717 +JS_PUBLIC_API(JSFunction *)
1.4718 +JS::CompileFunction(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4719 + const char *name, unsigned nargs, const char *const *argnames,
1.4720 + const char *bytes, size_t length)
1.4721 +{
1.4722 + jschar *chars;
1.4723 + if (options.utf8)
1.4724 + chars = UTF8CharsToNewTwoByteCharsZ(cx, UTF8Chars(bytes, length), &length).get();
1.4725 + else
1.4726 + chars = InflateString(cx, bytes, &length);
1.4727 + if (!chars)
1.4728 + return nullptr;
1.4729 +
1.4730 + JSFunction *fun = CompileFunction(cx, obj, options, name, nargs, argnames, chars, length);
1.4731 + js_free(chars);
1.4732 + return fun;
1.4733 +}
1.4734 +
1.4735 +JS_PUBLIC_API(JSFunction *)
1.4736 +JS_CompileUCFunction(JSContext *cx, JS::HandleObject obj, const char *name,
1.4737 + unsigned nargs, const char *const *argnames,
1.4738 + const jschar *chars, size_t length,
1.4739 + const CompileOptions &options)
1.4740 +{
1.4741 + return CompileFunction(cx, obj, options, name, nargs, argnames, chars, length);
1.4742 +}
1.4743 +
1.4744 +JS_PUBLIC_API(JSFunction *)
1.4745 +JS_CompileFunction(JSContext *cx, JS::HandleObject obj, const char *name,
1.4746 + unsigned nargs, const char *const *argnames,
1.4747 + const char *ascii, size_t length,
1.4748 + const JS::CompileOptions &options)
1.4749 +{
1.4750 + return CompileFunction(cx, obj, options, name, nargs, argnames, ascii, length);
1.4751 +}
1.4752 +
1.4753 +JS_PUBLIC_API(JSString *)
1.4754 +JS_DecompileScript(JSContext *cx, HandleScript script, const char *name, unsigned indent)
1.4755 +{
1.4756 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4757 +
1.4758 + AssertHeapIsIdle(cx);
1.4759 + CHECK_REQUEST(cx);
1.4760 + script->ensureNonLazyCanonicalFunction(cx);
1.4761 + RootedFunction fun(cx, script->functionNonDelazifying());
1.4762 + if (fun)
1.4763 + return JS_DecompileFunction(cx, fun, indent);
1.4764 + bool haveSource = script->scriptSource()->hasSourceData();
1.4765 + if (!haveSource && !JSScript::loadSource(cx, script->scriptSource(), &haveSource))
1.4766 + return nullptr;
1.4767 + return haveSource ? script->sourceData(cx) : js_NewStringCopyZ<CanGC>(cx, "[no source]");
1.4768 +}
1.4769 +
1.4770 +JS_PUBLIC_API(JSString *)
1.4771 +JS_DecompileFunction(JSContext *cx, HandleFunction fun, unsigned indent)
1.4772 +{
1.4773 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4774 + AssertHeapIsIdle(cx);
1.4775 + CHECK_REQUEST(cx);
1.4776 + assertSameCompartment(cx, fun);
1.4777 + return FunctionToString(cx, fun, false, !(indent & JS_DONT_PRETTY_PRINT));
1.4778 +}
1.4779 +
1.4780 +JS_PUBLIC_API(JSString *)
1.4781 +JS_DecompileFunctionBody(JSContext *cx, HandleFunction fun, unsigned indent)
1.4782 +{
1.4783 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4784 + AssertHeapIsIdle(cx);
1.4785 + CHECK_REQUEST(cx);
1.4786 + assertSameCompartment(cx, fun);
1.4787 + return FunctionToString(cx, fun, true, !(indent & JS_DONT_PRETTY_PRINT));
1.4788 +}
1.4789 +
1.4790 +MOZ_NEVER_INLINE static bool
1.4791 +ExecuteScript(JSContext *cx, HandleObject obj, HandleScript scriptArg, jsval *rval)
1.4792 +{
1.4793 + RootedScript script(cx, scriptArg);
1.4794 +
1.4795 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4796 + AssertHeapIsIdle(cx);
1.4797 + CHECK_REQUEST(cx);
1.4798 + assertSameCompartment(cx, obj, scriptArg);
1.4799 + AutoLastFrameCheck lfc(cx);
1.4800 + return Execute(cx, script, *obj, rval);
1.4801 +}
1.4802 +
1.4803 +MOZ_NEVER_INLINE JS_PUBLIC_API(bool)
1.4804 +JS_ExecuteScript(JSContext *cx, HandleObject obj, HandleScript scriptArg, MutableHandleValue rval)
1.4805 +{
1.4806 + return ExecuteScript(cx, obj, scriptArg, rval.address());
1.4807 +}
1.4808 +
1.4809 +MOZ_NEVER_INLINE JS_PUBLIC_API(bool)
1.4810 +JS_ExecuteScript(JSContext *cx, HandleObject obj, HandleScript scriptArg)
1.4811 +{
1.4812 + return ExecuteScript(cx, obj, scriptArg, nullptr);
1.4813 +}
1.4814 +
1.4815 +JS_PUBLIC_API(bool)
1.4816 +JS::CloneAndExecuteScript(JSContext *cx, HandleObject obj, HandleScript scriptArg)
1.4817 +{
1.4818 + CHECK_REQUEST(cx);
1.4819 + assertSameCompartment(cx, obj);
1.4820 + RootedScript script(cx, scriptArg);
1.4821 + if (script->compartment() != cx->compartment()) {
1.4822 + script = CloneScript(cx, NullPtr(), NullPtr(), script);
1.4823 + if (!script)
1.4824 + return false;
1.4825 + }
1.4826 + return ExecuteScript(cx, obj, script, nullptr);
1.4827 +}
1.4828 +
1.4829 +JS_PUBLIC_API(bool)
1.4830 +JS_ExecuteScriptVersion(JSContext *cx, HandleObject obj, HandleScript script,
1.4831 + MutableHandleValue rval, JSVersion version)
1.4832 +{
1.4833 + return ExecuteScript(cx, obj, script, rval.address());
1.4834 +}
1.4835 +
1.4836 +JS_PUBLIC_API(bool)
1.4837 +JS_ExecuteScriptVersion(JSContext *cx, HandleObject obj, HandleScript script, JSVersion version)
1.4838 +{
1.4839 + return ExecuteScript(cx, obj, script, nullptr);
1.4840 +}
1.4841 +
1.4842 +static const unsigned LARGE_SCRIPT_LENGTH = 500*1024;
1.4843 +
1.4844 +static bool
1.4845 +Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4846 + SourceBufferHolder &srcBuf, JS::Value *rval)
1.4847 +{
1.4848 + CompileOptions options(cx, optionsArg);
1.4849 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.4850 + AssertHeapIsIdle(cx);
1.4851 + CHECK_REQUEST(cx);
1.4852 + assertSameCompartment(cx, obj);
1.4853 +
1.4854 + AutoLastFrameCheck lfc(cx);
1.4855 +
1.4856 + options.setCompileAndGo(obj->is<GlobalObject>());
1.4857 + options.setNoScriptRval(!rval);
1.4858 + SourceCompressionTask sct(cx);
1.4859 + RootedScript script(cx, frontend::CompileScript(cx, &cx->tempLifoAlloc(),
1.4860 + obj, NullPtr(), options,
1.4861 + srcBuf, nullptr, 0, &sct));
1.4862 + if (!script)
1.4863 + return false;
1.4864 +
1.4865 + JS_ASSERT(script->getVersion() == options.version);
1.4866 +
1.4867 + bool result = Execute(cx, script, *obj, rval);
1.4868 + if (!sct.complete())
1.4869 + result = false;
1.4870 +
1.4871 + // After evaluation, the compiled script will not be run again.
1.4872 + // script->ensureRanAnalysis allocated 1 analyze::Bytecode for every opcode
1.4873 + // which for large scripts means significant memory. Perform a GC eagerly
1.4874 + // to clear out this analysis data before anything happens to inhibit the
1.4875 + // flushing of this memory (such as setting requestAnimationFrame).
1.4876 + if (script->length() > LARGE_SCRIPT_LENGTH) {
1.4877 + script = nullptr;
1.4878 + PrepareZoneForGC(cx->zone());
1.4879 + GC(cx->runtime(), GC_NORMAL, JS::gcreason::FINISH_LARGE_EVALUTE);
1.4880 + }
1.4881 +
1.4882 + return result;
1.4883 +}
1.4884 +
1.4885 +static bool
1.4886 +Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4887 + const jschar *chars, size_t length, JS::Value *rval)
1.4888 +{
1.4889 + SourceBufferHolder srcBuf(chars, length, SourceBufferHolder::NoOwnership);
1.4890 + return ::Evaluate(cx, obj, optionsArg, srcBuf, rval);
1.4891 +}
1.4892 +
1.4893 +static bool
1.4894 +Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4895 + const char *bytes, size_t length, JS::Value *rval)
1.4896 +{
1.4897 + jschar *chars;
1.4898 + if (options.utf8)
1.4899 + chars = UTF8CharsToNewTwoByteCharsZ(cx, JS::UTF8Chars(bytes, length), &length).get();
1.4900 + else
1.4901 + chars = InflateString(cx, bytes, &length);
1.4902 + if (!chars)
1.4903 + return false;
1.4904 +
1.4905 + SourceBufferHolder srcBuf(chars, length, SourceBufferHolder::GiveOwnership);
1.4906 + bool ok = ::Evaluate(cx, obj, options, srcBuf, rval);
1.4907 + return ok;
1.4908 +}
1.4909 +
1.4910 +static bool
1.4911 +Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4912 + const char *filename, JS::Value *rval)
1.4913 +{
1.4914 + FileContents buffer(cx);
1.4915 + {
1.4916 + AutoFile file;
1.4917 + if (!file.open(cx, filename) || !file.readAll(cx, buffer))
1.4918 + return false;
1.4919 + }
1.4920 +
1.4921 + CompileOptions options(cx, optionsArg);
1.4922 + options.setFileAndLine(filename, 1);
1.4923 + return Evaluate(cx, obj, options, buffer.begin(), buffer.length(), rval);
1.4924 +}
1.4925 +
1.4926 +extern JS_PUBLIC_API(bool)
1.4927 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4928 + SourceBufferHolder &srcBuf, MutableHandleValue rval)
1.4929 +{
1.4930 + return ::Evaluate(cx, obj, optionsArg, srcBuf, rval.address());
1.4931 +}
1.4932 +
1.4933 +extern JS_PUBLIC_API(bool)
1.4934 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4935 + const jschar *chars, size_t length, MutableHandleValue rval)
1.4936 +{
1.4937 + return ::Evaluate(cx, obj, optionsArg, chars, length, rval.address());
1.4938 +}
1.4939 +
1.4940 +extern JS_PUBLIC_API(bool)
1.4941 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4942 + const char *bytes, size_t length, MutableHandleValue rval)
1.4943 +{
1.4944 + return ::Evaluate(cx, obj, options, bytes, length, rval.address());
1.4945 +}
1.4946 +
1.4947 +extern JS_PUBLIC_API(bool)
1.4948 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4949 + const char *filename, MutableHandleValue rval)
1.4950 +{
1.4951 + return ::Evaluate(cx, obj, optionsArg, filename, rval.address());
1.4952 +}
1.4953 +
1.4954 +extern JS_PUBLIC_API(bool)
1.4955 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4956 + SourceBufferHolder &srcBuf)
1.4957 +{
1.4958 + return ::Evaluate(cx, obj, optionsArg, srcBuf, nullptr);
1.4959 +}
1.4960 +
1.4961 +extern JS_PUBLIC_API(bool)
1.4962 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4963 + const jschar *chars, size_t length)
1.4964 +{
1.4965 + return ::Evaluate(cx, obj, optionsArg, chars, length, nullptr);
1.4966 +}
1.4967 +
1.4968 +extern JS_PUBLIC_API(bool)
1.4969 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &options,
1.4970 + const char *bytes, size_t length)
1.4971 +{
1.4972 + return ::Evaluate(cx, obj, options, bytes, length, nullptr);
1.4973 +}
1.4974 +
1.4975 +extern JS_PUBLIC_API(bool)
1.4976 +JS::Evaluate(JSContext *cx, HandleObject obj, const ReadOnlyCompileOptions &optionsArg,
1.4977 + const char *filename)
1.4978 +{
1.4979 + return ::Evaluate(cx, obj, optionsArg, filename, nullptr);
1.4980 +}
1.4981 +
1.4982 +JS_PUBLIC_API(bool)
1.4983 +JS_EvaluateUCScript(JSContext *cx, HandleObject obj, const jschar *chars, unsigned length,
1.4984 + const char *filename, unsigned lineno, MutableHandleValue rval)
1.4985 +{
1.4986 + CompileOptions options(cx);
1.4987 + options.setFileAndLine(filename, lineno);
1.4988 +
1.4989 + return ::Evaluate(cx, obj, options, chars, length, rval.address());
1.4990 +}
1.4991 +
1.4992 +JS_PUBLIC_API(bool)
1.4993 +JS_EvaluateUCScript(JSContext *cx, HandleObject obj, SourceBufferHolder &srcBuf,
1.4994 + const char *filename, unsigned lineno, MutableHandleValue rval)
1.4995 +{
1.4996 + CompileOptions options(cx);
1.4997 + options.setFileAndLine(filename, lineno);
1.4998 +
1.4999 + return ::Evaluate(cx, obj, options, srcBuf, rval.address());
1.5000 +}
1.5001 +
1.5002 +JS_PUBLIC_API(bool)
1.5003 +JS_EvaluateScript(JSContext *cx, HandleObject obj, const char *bytes, unsigned nbytes,
1.5004 + const char *filename, unsigned lineno, MutableHandleValue rval)
1.5005 +{
1.5006 + CompileOptions options(cx);
1.5007 + options.setFileAndLine(filename, lineno);
1.5008 +
1.5009 + return ::Evaluate(cx, obj, options, bytes, nbytes, rval.address());
1.5010 +}
1.5011 +
1.5012 +JS_PUBLIC_API(bool)
1.5013 +JS_EvaluateScript(JSContext *cx, HandleObject obj, const char *bytes, unsigned nbytes,
1.5014 + const char *filename, unsigned lineno)
1.5015 +{
1.5016 + CompileOptions options(cx);
1.5017 + options.setFileAndLine(filename, lineno);
1.5018 +
1.5019 + return ::Evaluate(cx, obj, options, bytes, nbytes, nullptr);
1.5020 +}
1.5021 +
1.5022 +JS_PUBLIC_API(bool)
1.5023 +JS_CallFunction(JSContext *cx, HandleObject obj, HandleFunction fun, const HandleValueArray& args,
1.5024 + MutableHandleValue rval)
1.5025 +{
1.5026 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.5027 + AssertHeapIsIdle(cx);
1.5028 + CHECK_REQUEST(cx);
1.5029 + assertSameCompartment(cx, obj, fun, args);
1.5030 + AutoLastFrameCheck lfc(cx);
1.5031 +
1.5032 + return Invoke(cx, ObjectOrNullValue(obj), ObjectValue(*fun), args.length(), args.begin(), rval);
1.5033 +}
1.5034 +
1.5035 +JS_PUBLIC_API(bool)
1.5036 +JS_CallFunctionName(JSContext *cx, HandleObject obj, const char *name, const HandleValueArray& args,
1.5037 + MutableHandleValue rval)
1.5038 +{
1.5039 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.5040 + AssertHeapIsIdle(cx);
1.5041 + CHECK_REQUEST(cx);
1.5042 + assertSameCompartment(cx, obj, args);
1.5043 + AutoLastFrameCheck lfc(cx);
1.5044 +
1.5045 + JSAtom *atom = Atomize(cx, name, strlen(name));
1.5046 + if (!atom)
1.5047 + return false;
1.5048 +
1.5049 + RootedValue v(cx);
1.5050 + RootedId id(cx, AtomToId(atom));
1.5051 + if (!JSObject::getGeneric(cx, obj, obj, id, &v))
1.5052 + return false;
1.5053 +
1.5054 + return Invoke(cx, ObjectOrNullValue(obj), v, args.length(), args.begin(), rval);
1.5055 +}
1.5056 +
1.5057 +JS_PUBLIC_API(bool)
1.5058 +JS_CallFunctionValue(JSContext *cx, HandleObject obj, HandleValue fval, const HandleValueArray& args,
1.5059 + MutableHandleValue rval)
1.5060 +{
1.5061 + JS_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
1.5062 + AssertHeapIsIdle(cx);
1.5063 + CHECK_REQUEST(cx);
1.5064 + assertSameCompartment(cx, obj, fval, args);
1.5065 + AutoLastFrameCheck lfc(cx);
1.5066 +
1.5067 + return Invoke(cx, ObjectOrNullValue(obj), fval, args.length(), args.begin(), rval);
1.5068 +}
1.5069 +
1.5070 +JS_PUBLIC_API(bool)
1.5071 +JS::Call(JSContext *cx, HandleValue thisv, HandleValue fval, const JS::HandleValueArray& args,
1.5072 + MutableHandleValue rval)
1.5073 +{
1.5074 + AssertHeapIsIdle(cx);
1.5075 + CHECK_REQUEST(cx);
1.5076 + assertSameCompartment(cx, thisv, fval, args);
1.5077 + AutoLastFrameCheck lfc(cx);
1.5078 +
1.5079 + return Invoke(cx, thisv, fval, args.length(), args.begin(), rval);
1.5080 +}
1.5081 +
1.5082 +static JSObject *
1.5083 +JS_NewHelper(JSContext *cx, HandleObject ctor, const JS::HandleValueArray& inputArgs)
1.5084 +{
1.5085 + AssertHeapIsIdle(cx);
1.5086 + CHECK_REQUEST(cx);
1.5087 + assertSameCompartment(cx, ctor, inputArgs);
1.5088 +
1.5089 + // This is not a simple variation of JS_CallFunctionValue because JSOP_NEW
1.5090 + // is not a simple variation of JSOP_CALL. We have to determine what class
1.5091 + // of object to create, create it, and clamp the return value to an object,
1.5092 + // among other details. InvokeConstructor does the hard work.
1.5093 + InvokeArgs args(cx);
1.5094 + if (!args.init(inputArgs.length()))
1.5095 + return nullptr;
1.5096 +
1.5097 + args.setCallee(ObjectValue(*ctor));
1.5098 + args.setThis(NullValue());
1.5099 + PodCopy(args.array(), inputArgs.begin(), inputArgs.length());
1.5100 +
1.5101 + if (!InvokeConstructor(cx, args))
1.5102 + return nullptr;
1.5103 +
1.5104 + if (!args.rval().isObject()) {
1.5105 + /*
1.5106 + * Although constructors may return primitives (via proxies), this
1.5107 + * API is asking for an object, so we report an error.
1.5108 + */
1.5109 + JSAutoByteString bytes;
1.5110 + if (js_ValueToPrintable(cx, args.rval(), &bytes)) {
1.5111 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_BAD_NEW_RESULT,
1.5112 + bytes.ptr());
1.5113 + }
1.5114 + return nullptr;
1.5115 + }
1.5116 +
1.5117 + return &args.rval().toObject();
1.5118 +}
1.5119 +
1.5120 +JS_PUBLIC_API(JSObject *)
1.5121 +JS_New(JSContext *cx, HandleObject ctor, const JS::HandleValueArray& inputArgs)
1.5122 +{
1.5123 + RootedObject obj(cx);
1.5124 + {
1.5125 + AutoLastFrameCheck lfc(cx);
1.5126 + obj = JS_NewHelper(cx, ctor, inputArgs);
1.5127 + }
1.5128 + return obj;
1.5129 +}
1.5130 +
1.5131 +JS_PUBLIC_API(JSInterruptCallback)
1.5132 +JS_SetInterruptCallback(JSRuntime *rt, JSInterruptCallback callback)
1.5133 +{
1.5134 + JSInterruptCallback old = rt->interruptCallback;
1.5135 + rt->interruptCallback = callback;
1.5136 + return old;
1.5137 +}
1.5138 +
1.5139 +JS_PUBLIC_API(JSInterruptCallback)
1.5140 +JS_GetInterruptCallback(JSRuntime *rt)
1.5141 +{
1.5142 + return rt->interruptCallback;
1.5143 +}
1.5144 +
1.5145 +JS_PUBLIC_API(void)
1.5146 +JS_RequestInterruptCallback(JSRuntime *rt)
1.5147 +{
1.5148 + rt->requestInterrupt(JSRuntime::RequestInterruptAnyThread);
1.5149 +}
1.5150 +
1.5151 +JS_PUBLIC_API(bool)
1.5152 +JS_IsRunning(JSContext *cx)
1.5153 +{
1.5154 + return cx->currentlyRunning();
1.5155 +}
1.5156 +
1.5157 +JS_PUBLIC_API(bool)
1.5158 +JS_SaveFrameChain(JSContext *cx)
1.5159 +{
1.5160 + AssertHeapIsIdleOrIterating(cx);
1.5161 + CHECK_REQUEST(cx);
1.5162 + return cx->saveFrameChain();
1.5163 +}
1.5164 +
1.5165 +JS_PUBLIC_API(void)
1.5166 +JS_RestoreFrameChain(JSContext *cx)
1.5167 +{
1.5168 + AssertHeapIsIdleOrIterating(cx);
1.5169 + CHECK_REQUEST(cx);
1.5170 + cx->restoreFrameChain();
1.5171 +}
1.5172 +
1.5173 +#ifdef MOZ_TRACE_JSCALLS
1.5174 +JS_PUBLIC_API(void)
1.5175 +JS_SetFunctionCallback(JSContext *cx, JSFunctionCallback fcb)
1.5176 +{
1.5177 + cx->functionCallback = fcb;
1.5178 +}
1.5179 +
1.5180 +JS_PUBLIC_API(JSFunctionCallback)
1.5181 +JS_GetFunctionCallback(JSContext *cx)
1.5182 +{
1.5183 + return cx->functionCallback;
1.5184 +}
1.5185 +#endif
1.5186 +
1.5187 +/************************************************************************/
1.5188 +JS_PUBLIC_API(JSString *)
1.5189 +JS_NewStringCopyN(JSContext *cx, const char *s, size_t n)
1.5190 +{
1.5191 + AssertHeapIsIdle(cx);
1.5192 + CHECK_REQUEST(cx);
1.5193 + if (!n)
1.5194 + return cx->names().empty;
1.5195 + return js_NewStringCopyN<CanGC>(cx, s, n);
1.5196 +}
1.5197 +
1.5198 +JS_PUBLIC_API(JSString *)
1.5199 +JS_NewStringCopyZ(JSContext *cx, const char *s)
1.5200 +{
1.5201 + size_t n;
1.5202 + jschar *js;
1.5203 + JSString *str;
1.5204 +
1.5205 + AssertHeapIsIdle(cx);
1.5206 + CHECK_REQUEST(cx);
1.5207 + if (!s || !*s)
1.5208 + return cx->runtime()->emptyString;
1.5209 + n = strlen(s);
1.5210 + js = InflateString(cx, s, &n);
1.5211 + if (!js)
1.5212 + return nullptr;
1.5213 + str = js_NewString<CanGC>(cx, js, n);
1.5214 + if (!str)
1.5215 + js_free(js);
1.5216 + return str;
1.5217 +}
1.5218 +
1.5219 +JS_PUBLIC_API(bool)
1.5220 +JS_StringHasBeenInterned(JSContext *cx, JSString *str)
1.5221 +{
1.5222 + AssertHeapIsIdle(cx);
1.5223 + CHECK_REQUEST(cx);
1.5224 +
1.5225 + if (!str->isAtom())
1.5226 + return false;
1.5227 +
1.5228 + return AtomIsInterned(cx, &str->asAtom());
1.5229 +}
1.5230 +
1.5231 +JS_PUBLIC_API(jsid)
1.5232 +INTERNED_STRING_TO_JSID(JSContext *cx, JSString *str)
1.5233 +{
1.5234 + JS_ASSERT(str);
1.5235 + JS_ASSERT(((size_t)str & JSID_TYPE_MASK) == 0);
1.5236 + JS_ASSERT_IF(cx, JS_StringHasBeenInterned(cx, str));
1.5237 + return AtomToId(&str->asAtom());
1.5238 +}
1.5239 +
1.5240 +JS_PUBLIC_API(JSString *)
1.5241 +JS_InternJSString(JSContext *cx, HandleString str)
1.5242 +{
1.5243 + AssertHeapIsIdle(cx);
1.5244 + CHECK_REQUEST(cx);
1.5245 + JSAtom *atom = AtomizeString(cx, str, InternAtom);
1.5246 + JS_ASSERT_IF(atom, JS_StringHasBeenInterned(cx, atom));
1.5247 + return atom;
1.5248 +}
1.5249 +
1.5250 +JS_PUBLIC_API(JSString *)
1.5251 +JS_InternString(JSContext *cx, const char *s)
1.5252 +{
1.5253 + return JS_InternStringN(cx, s, strlen(s));
1.5254 +}
1.5255 +
1.5256 +JS_PUBLIC_API(JSString *)
1.5257 +JS_InternStringN(JSContext *cx, const char *s, size_t length)
1.5258 +{
1.5259 + AssertHeapIsIdle(cx);
1.5260 + CHECK_REQUEST(cx);
1.5261 + JSAtom *atom = Atomize(cx, s, length, InternAtom);
1.5262 + JS_ASSERT_IF(atom, JS_StringHasBeenInterned(cx, atom));
1.5263 + return atom;
1.5264 +}
1.5265 +
1.5266 +JS_PUBLIC_API(JSString *)
1.5267 +JS_NewUCString(JSContext *cx, jschar *chars, size_t length)
1.5268 +{
1.5269 + AssertHeapIsIdle(cx);
1.5270 + CHECK_REQUEST(cx);
1.5271 + return js_NewString<CanGC>(cx, chars, length);
1.5272 +}
1.5273 +
1.5274 +JS_PUBLIC_API(JSString *)
1.5275 +JS_NewUCStringCopyN(JSContext *cx, const jschar *s, size_t n)
1.5276 +{
1.5277 + AssertHeapIsIdle(cx);
1.5278 + CHECK_REQUEST(cx);
1.5279 + if (!n)
1.5280 + return cx->names().empty;
1.5281 + return js_NewStringCopyN<CanGC>(cx, s, n);
1.5282 +}
1.5283 +
1.5284 +JS_PUBLIC_API(JSString *)
1.5285 +JS_NewUCStringCopyZ(JSContext *cx, const jschar *s)
1.5286 +{
1.5287 + AssertHeapIsIdle(cx);
1.5288 + CHECK_REQUEST(cx);
1.5289 + if (!s)
1.5290 + return cx->runtime()->emptyString;
1.5291 + return js_NewStringCopyZ<CanGC>(cx, s);
1.5292 +}
1.5293 +
1.5294 +JS_PUBLIC_API(JSString *)
1.5295 +JS_InternUCStringN(JSContext *cx, const jschar *s, size_t length)
1.5296 +{
1.5297 + AssertHeapIsIdle(cx);
1.5298 + CHECK_REQUEST(cx);
1.5299 + JSAtom *atom = AtomizeChars(cx, s, length, InternAtom);
1.5300 + JS_ASSERT_IF(atom, JS_StringHasBeenInterned(cx, atom));
1.5301 + return atom;
1.5302 +}
1.5303 +
1.5304 +JS_PUBLIC_API(JSString *)
1.5305 +JS_InternUCString(JSContext *cx, const jschar *s)
1.5306 +{
1.5307 + return JS_InternUCStringN(cx, s, js_strlen(s));
1.5308 +}
1.5309 +
1.5310 +JS_PUBLIC_API(size_t)
1.5311 +JS_GetStringLength(JSString *str)
1.5312 +{
1.5313 + return str->length();
1.5314 +}
1.5315 +
1.5316 +JS_PUBLIC_API(const jschar *)
1.5317 +JS_GetStringCharsZ(JSContext *cx, JSString *str)
1.5318 +{
1.5319 + size_t dummy;
1.5320 + return JS_GetStringCharsZAndLength(cx, str, &dummy);
1.5321 +}
1.5322 +
1.5323 +JS_PUBLIC_API(const jschar *)
1.5324 +JS_GetStringCharsZAndLength(JSContext *cx, JSString *str, size_t *plength)
1.5325 +{
1.5326 + /*
1.5327 + * Don't require |cx->compartment()| to be |str|'s compartment. We don't need
1.5328 + * it, and it's annoying for callers.
1.5329 + */
1.5330 + JS_ASSERT(plength);
1.5331 + AssertHeapIsIdleOrStringIsFlat(cx, str);
1.5332 + CHECK_REQUEST(cx);
1.5333 + JSFlatString *flat = str->ensureFlat(cx);
1.5334 + if (!flat)
1.5335 + return nullptr;
1.5336 + *plength = flat->length();
1.5337 + return flat->chars();
1.5338 +}
1.5339 +
1.5340 +JS_PUBLIC_API(const jschar *)
1.5341 +JS_GetStringCharsAndLength(JSContext *cx, JSString *str, size_t *plength)
1.5342 +{
1.5343 + JS_ASSERT(plength);
1.5344 + AssertHeapIsIdleOrStringIsFlat(cx, str);
1.5345 + CHECK_REQUEST(cx);
1.5346 + assertSameCompartment(cx, str);
1.5347 + JSLinearString *linear = str->ensureLinear(cx);
1.5348 + if (!linear)
1.5349 + return nullptr;
1.5350 + *plength = linear->length();
1.5351 + return linear->chars();
1.5352 +}
1.5353 +
1.5354 +JS_PUBLIC_API(const jschar *)
1.5355 +JS_GetInternedStringChars(JSString *str)
1.5356 +{
1.5357 + JS_ASSERT(str->isAtom());
1.5358 + JSFlatString *flat = str->ensureFlat(nullptr);
1.5359 + if (!flat)
1.5360 + return nullptr;
1.5361 + return flat->chars();
1.5362 +}
1.5363 +
1.5364 +JS_PUBLIC_API(const jschar *)
1.5365 +JS_GetInternedStringCharsAndLength(JSString *str, size_t *plength)
1.5366 +{
1.5367 + JS_ASSERT(str->isAtom());
1.5368 + JS_ASSERT(plength);
1.5369 + JSFlatString *flat = str->ensureFlat(nullptr);
1.5370 + if (!flat)
1.5371 + return nullptr;
1.5372 + *plength = flat->length();
1.5373 + return flat->chars();
1.5374 +}
1.5375 +
1.5376 +extern JS_PUBLIC_API(JSFlatString *)
1.5377 +JS_FlattenString(JSContext *cx, JSString *str)
1.5378 +{
1.5379 + AssertHeapIsIdle(cx);
1.5380 + CHECK_REQUEST(cx);
1.5381 + assertSameCompartment(cx, str);
1.5382 + JSFlatString *flat = str->ensureFlat(cx);
1.5383 + if (!flat)
1.5384 + return nullptr;
1.5385 + return flat;
1.5386 +}
1.5387 +
1.5388 +extern JS_PUBLIC_API(const jschar *)
1.5389 +JS_GetFlatStringChars(JSFlatString *str)
1.5390 +{
1.5391 + return str->chars();
1.5392 +}
1.5393 +
1.5394 +JS_PUBLIC_API(bool)
1.5395 +JS_CompareStrings(JSContext *cx, JSString *str1, JSString *str2, int32_t *result)
1.5396 +{
1.5397 + AssertHeapIsIdle(cx);
1.5398 + CHECK_REQUEST(cx);
1.5399 +
1.5400 + return CompareStrings(cx, str1, str2, result);
1.5401 +}
1.5402 +
1.5403 +JS_PUBLIC_API(bool)
1.5404 +JS_StringEqualsAscii(JSContext *cx, JSString *str, const char *asciiBytes, bool *match)
1.5405 +{
1.5406 + AssertHeapIsIdle(cx);
1.5407 + CHECK_REQUEST(cx);
1.5408 +
1.5409 + JSLinearString *linearStr = str->ensureLinear(cx);
1.5410 + if (!linearStr)
1.5411 + return false;
1.5412 + *match = StringEqualsAscii(linearStr, asciiBytes);
1.5413 + return true;
1.5414 +}
1.5415 +
1.5416 +JS_PUBLIC_API(bool)
1.5417 +JS_FlatStringEqualsAscii(JSFlatString *str, const char *asciiBytes)
1.5418 +{
1.5419 + return StringEqualsAscii(str, asciiBytes);
1.5420 +}
1.5421 +
1.5422 +JS_PUBLIC_API(size_t)
1.5423 +JS_PutEscapedFlatString(char *buffer, size_t size, JSFlatString *str, char quote)
1.5424 +{
1.5425 + return PutEscapedString(buffer, size, str, quote);
1.5426 +}
1.5427 +
1.5428 +JS_PUBLIC_API(size_t)
1.5429 +JS_PutEscapedString(JSContext *cx, char *buffer, size_t size, JSString *str, char quote)
1.5430 +{
1.5431 + AssertHeapIsIdle(cx);
1.5432 + JSLinearString *linearStr = str->ensureLinear(cx);
1.5433 + if (!linearStr)
1.5434 + return size_t(-1);
1.5435 + return PutEscapedString(buffer, size, linearStr, quote);
1.5436 +}
1.5437 +
1.5438 +JS_PUBLIC_API(bool)
1.5439 +JS_FileEscapedString(FILE *fp, JSString *str, char quote)
1.5440 +{
1.5441 + JSLinearString *linearStr = str->ensureLinear(nullptr);
1.5442 + return linearStr && FileEscapedString(fp, linearStr, quote);
1.5443 +}
1.5444 +
1.5445 +JS_PUBLIC_API(JSString *)
1.5446 +JS_NewDependentString(JSContext *cx, HandleString str, size_t start, size_t length)
1.5447 +{
1.5448 + AssertHeapIsIdle(cx);
1.5449 + CHECK_REQUEST(cx);
1.5450 + return js_NewDependentString(cx, str, start, length);
1.5451 +}
1.5452 +
1.5453 +JS_PUBLIC_API(JSString *)
1.5454 +JS_ConcatStrings(JSContext *cx, HandleString left, HandleString right)
1.5455 +{
1.5456 + AssertHeapIsIdle(cx);
1.5457 + CHECK_REQUEST(cx);
1.5458 + return ConcatStrings<CanGC>(cx, left, right);
1.5459 +}
1.5460 +
1.5461 +JS_PUBLIC_API(bool)
1.5462 +JS_DecodeBytes(JSContext *cx, const char *src, size_t srclen, jschar *dst, size_t *dstlenp)
1.5463 +{
1.5464 + AssertHeapIsIdle(cx);
1.5465 + CHECK_REQUEST(cx);
1.5466 +
1.5467 + if (!dst) {
1.5468 + *dstlenp = srclen;
1.5469 + return true;
1.5470 + }
1.5471 +
1.5472 + size_t dstlen = *dstlenp;
1.5473 +
1.5474 + if (srclen > dstlen) {
1.5475 + InflateStringToBuffer(src, dstlen, dst);
1.5476 +
1.5477 + AutoSuppressGC suppress(cx);
1.5478 + JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_BUFFER_TOO_SMALL);
1.5479 + return false;
1.5480 + }
1.5481 +
1.5482 + InflateStringToBuffer(src, srclen, dst);
1.5483 + *dstlenp = srclen;
1.5484 + return true;
1.5485 +}
1.5486 +
1.5487 +JS_PUBLIC_API(char *)
1.5488 +JS_EncodeString(JSContext *cx, JSString *str)
1.5489 +{
1.5490 + AssertHeapIsIdle(cx);
1.5491 + CHECK_REQUEST(cx);
1.5492 +
1.5493 + JSLinearString *linear = str->ensureLinear(cx);
1.5494 + if (!linear)
1.5495 + return nullptr;
1.5496 +
1.5497 + return LossyTwoByteCharsToNewLatin1CharsZ(cx, linear->range()).c_str();
1.5498 +}
1.5499 +
1.5500 +JS_PUBLIC_API(char *)
1.5501 +JS_EncodeStringToUTF8(JSContext *cx, HandleString str)
1.5502 +{
1.5503 + AssertHeapIsIdle(cx);
1.5504 + CHECK_REQUEST(cx);
1.5505 +
1.5506 + JSLinearString *linear = str->ensureLinear(cx);
1.5507 + if (!linear)
1.5508 + return nullptr;
1.5509 +
1.5510 + return TwoByteCharsToNewUTF8CharsZ(cx, linear->range()).c_str();
1.5511 +}
1.5512 +
1.5513 +JS_PUBLIC_API(size_t)
1.5514 +JS_GetStringEncodingLength(JSContext *cx, JSString *str)
1.5515 +{
1.5516 + AssertHeapIsIdle(cx);
1.5517 + CHECK_REQUEST(cx);
1.5518 +
1.5519 + const jschar *chars = str->getChars(cx);
1.5520 + if (!chars)
1.5521 + return size_t(-1);
1.5522 + return str->length();
1.5523 +}
1.5524 +
1.5525 +JS_PUBLIC_API(size_t)
1.5526 +JS_EncodeStringToBuffer(JSContext *cx, JSString *str, char *buffer, size_t length)
1.5527 +{
1.5528 + AssertHeapIsIdle(cx);
1.5529 + CHECK_REQUEST(cx);
1.5530 +
1.5531 + /*
1.5532 + * FIXME bug 612141 - fix DeflateStringToBuffer interface so the result
1.5533 + * would allow to distinguish between insufficient buffer and encoding
1.5534 + * error.
1.5535 + */
1.5536 + size_t writtenLength = length;
1.5537 + const jschar *chars = str->getChars(nullptr);
1.5538 + if (!chars)
1.5539 + return size_t(-1);
1.5540 + if (DeflateStringToBuffer(nullptr, chars, str->length(), buffer, &writtenLength)) {
1.5541 + JS_ASSERT(writtenLength <= length);
1.5542 + return writtenLength;
1.5543 + }
1.5544 + JS_ASSERT(writtenLength <= length);
1.5545 + size_t necessaryLength = str->length();
1.5546 + if (necessaryLength == size_t(-1))
1.5547 + return size_t(-1);
1.5548 + JS_ASSERT(writtenLength == length); // C strings are NOT encoded.
1.5549 + return necessaryLength;
1.5550 +}
1.5551 +
1.5552 +JS_PUBLIC_API(bool)
1.5553 +JS_Stringify(JSContext *cx, MutableHandleValue vp, HandleObject replacer,
1.5554 + HandleValue space, JSONWriteCallback callback, void *data)
1.5555 +{
1.5556 + AssertHeapIsIdle(cx);
1.5557 + CHECK_REQUEST(cx);
1.5558 + assertSameCompartment(cx, replacer, space);
1.5559 + StringBuffer sb(cx);
1.5560 + if (!js_Stringify(cx, vp, replacer, space, sb))
1.5561 + return false;
1.5562 + if (sb.empty()) {
1.5563 + HandlePropertyName null = cx->names().null;
1.5564 + return callback(null->chars(), null->length(), data);
1.5565 + }
1.5566 + return callback(sb.begin(), sb.length(), data);
1.5567 +}
1.5568 +
1.5569 +JS_PUBLIC_API(bool)
1.5570 +JS_ParseJSON(JSContext *cx, const jschar *chars, uint32_t len, JS::MutableHandleValue vp)
1.5571 +{
1.5572 + AssertHeapIsIdle(cx);
1.5573 + CHECK_REQUEST(cx);
1.5574 +
1.5575 + RootedValue reviver(cx, NullValue());
1.5576 + return ParseJSONWithReviver(cx, ConstTwoByteChars(chars, len), len, reviver, vp);
1.5577 +}
1.5578 +
1.5579 +JS_PUBLIC_API(bool)
1.5580 +JS_ParseJSONWithReviver(JSContext *cx, const jschar *chars, uint32_t len, HandleValue reviver, MutableHandleValue vp)
1.5581 +{
1.5582 + AssertHeapIsIdle(cx);
1.5583 + CHECK_REQUEST(cx);
1.5584 + return ParseJSONWithReviver(cx, ConstTwoByteChars(chars, len), len, reviver, vp);
1.5585 +}
1.5586 +
1.5587 +/************************************************************************/
1.5588 +
1.5589 +JS_PUBLIC_API(void)
1.5590 +JS_ReportError(JSContext *cx, const char *format, ...)
1.5591 +{
1.5592 + va_list ap;
1.5593 +
1.5594 + AssertHeapIsIdle(cx);
1.5595 + va_start(ap, format);
1.5596 + js_ReportErrorVA(cx, JSREPORT_ERROR, format, ap);
1.5597 + va_end(ap);
1.5598 +}
1.5599 +
1.5600 +JS_PUBLIC_API(void)
1.5601 +JS_ReportErrorNumber(JSContext *cx, JSErrorCallback errorCallback,
1.5602 + void *userRef, const unsigned errorNumber, ...)
1.5603 +{
1.5604 + va_list ap;
1.5605 + va_start(ap, errorNumber);
1.5606 + JS_ReportErrorNumberVA(cx, errorCallback, userRef, errorNumber, ap);
1.5607 + va_end(ap);
1.5608 +}
1.5609 +
1.5610 +JS_PUBLIC_API(void)
1.5611 +JS_ReportErrorNumberVA(JSContext *cx, JSErrorCallback errorCallback,
1.5612 + void *userRef, const unsigned errorNumber,
1.5613 + va_list ap)
1.5614 +{
1.5615 + AssertHeapIsIdle(cx);
1.5616 + js_ReportErrorNumberVA(cx, JSREPORT_ERROR, errorCallback, userRef,
1.5617 + errorNumber, ArgumentsAreASCII, ap);
1.5618 +}
1.5619 +
1.5620 +JS_PUBLIC_API(void)
1.5621 +JS_ReportErrorNumberUC(JSContext *cx, JSErrorCallback errorCallback,
1.5622 + void *userRef, const unsigned errorNumber, ...)
1.5623 +{
1.5624 + va_list ap;
1.5625 +
1.5626 + AssertHeapIsIdle(cx);
1.5627 + va_start(ap, errorNumber);
1.5628 + js_ReportErrorNumberVA(cx, JSREPORT_ERROR, errorCallback, userRef,
1.5629 + errorNumber, ArgumentsAreUnicode, ap);
1.5630 + va_end(ap);
1.5631 +}
1.5632 +
1.5633 +JS_PUBLIC_API(void)
1.5634 +JS_ReportErrorNumberUCArray(JSContext *cx, JSErrorCallback errorCallback,
1.5635 + void *userRef, const unsigned errorNumber,
1.5636 + const jschar **args)
1.5637 +{
1.5638 + AssertHeapIsIdle(cx);
1.5639 + js_ReportErrorNumberUCArray(cx, JSREPORT_ERROR, errorCallback, userRef,
1.5640 + errorNumber, args);
1.5641 +}
1.5642 +
1.5643 +JS_PUBLIC_API(bool)
1.5644 +JS_ReportWarning(JSContext *cx, const char *format, ...)
1.5645 +{
1.5646 + va_list ap;
1.5647 + bool ok;
1.5648 +
1.5649 + AssertHeapIsIdle(cx);
1.5650 + va_start(ap, format);
1.5651 + ok = js_ReportErrorVA(cx, JSREPORT_WARNING, format, ap);
1.5652 + va_end(ap);
1.5653 + return ok;
1.5654 +}
1.5655 +
1.5656 +JS_PUBLIC_API(bool)
1.5657 +JS_ReportErrorFlagsAndNumber(JSContext *cx, unsigned flags,
1.5658 + JSErrorCallback errorCallback, void *userRef,
1.5659 + const unsigned errorNumber, ...)
1.5660 +{
1.5661 + va_list ap;
1.5662 + bool ok;
1.5663 +
1.5664 + AssertHeapIsIdle(cx);
1.5665 + va_start(ap, errorNumber);
1.5666 + ok = js_ReportErrorNumberVA(cx, flags, errorCallback, userRef,
1.5667 + errorNumber, ArgumentsAreASCII, ap);
1.5668 + va_end(ap);
1.5669 + return ok;
1.5670 +}
1.5671 +
1.5672 +JS_PUBLIC_API(bool)
1.5673 +JS_ReportErrorFlagsAndNumberUC(JSContext *cx, unsigned flags,
1.5674 + JSErrorCallback errorCallback, void *userRef,
1.5675 + const unsigned errorNumber, ...)
1.5676 +{
1.5677 + va_list ap;
1.5678 + bool ok;
1.5679 +
1.5680 + AssertHeapIsIdle(cx);
1.5681 + va_start(ap, errorNumber);
1.5682 + ok = js_ReportErrorNumberVA(cx, flags, errorCallback, userRef,
1.5683 + errorNumber, ArgumentsAreUnicode, ap);
1.5684 + va_end(ap);
1.5685 + return ok;
1.5686 +}
1.5687 +
1.5688 +JS_PUBLIC_API(void)
1.5689 +JS_ReportOutOfMemory(JSContext *cx)
1.5690 +{
1.5691 + js_ReportOutOfMemory(cx);
1.5692 +}
1.5693 +
1.5694 +JS_PUBLIC_API(void)
1.5695 +JS_ReportAllocationOverflow(JSContext *cx)
1.5696 +{
1.5697 + js_ReportAllocationOverflow(cx);
1.5698 +}
1.5699 +
1.5700 +JS_PUBLIC_API(JSErrorReporter)
1.5701 +JS_GetErrorReporter(JSContext *cx)
1.5702 +{
1.5703 + return cx->errorReporter;
1.5704 +}
1.5705 +
1.5706 +JS_PUBLIC_API(JSErrorReporter)
1.5707 +JS_SetErrorReporter(JSContext *cx, JSErrorReporter er)
1.5708 +{
1.5709 + JSErrorReporter older;
1.5710 +
1.5711 + older = cx->errorReporter;
1.5712 + cx->errorReporter = er;
1.5713 + return older;
1.5714 +}
1.5715 +
1.5716 +/************************************************************************/
1.5717 +
1.5718 +/*
1.5719 + * Dates.
1.5720 + */
1.5721 +JS_PUBLIC_API(JSObject *)
1.5722 +JS_NewDateObject(JSContext *cx, int year, int mon, int mday, int hour, int min, int sec)
1.5723 +{
1.5724 + AssertHeapIsIdle(cx);
1.5725 + CHECK_REQUEST(cx);
1.5726 + return js_NewDateObject(cx, year, mon, mday, hour, min, sec);
1.5727 +}
1.5728 +
1.5729 +JS_PUBLIC_API(JSObject *)
1.5730 +JS_NewDateObjectMsec(JSContext *cx, double msec)
1.5731 +{
1.5732 + AssertHeapIsIdle(cx);
1.5733 + CHECK_REQUEST(cx);
1.5734 + return js_NewDateObjectMsec(cx, msec);
1.5735 +}
1.5736 +
1.5737 +JS_PUBLIC_API(bool)
1.5738 +JS_ObjectIsDate(JSContext *cx, HandleObject obj)
1.5739 +{
1.5740 + assertSameCompartment(cx, obj);
1.5741 + return ObjectClassIs(obj, ESClass_Date, cx);
1.5742 +}
1.5743 +
1.5744 +JS_PUBLIC_API(void)
1.5745 +JS_ClearDateCaches(JSContext *cx)
1.5746 +{
1.5747 + AssertHeapIsIdle(cx);
1.5748 + CHECK_REQUEST(cx);
1.5749 + cx->runtime()->dateTimeInfo.updateTimeZoneAdjustment();
1.5750 +}
1.5751 +
1.5752 +/************************************************************************/
1.5753 +
1.5754 +/*
1.5755 + * Regular Expressions.
1.5756 + */
1.5757 +JS_PUBLIC_API(JSObject *)
1.5758 +JS_NewRegExpObject(JSContext *cx, HandleObject obj, char *bytes, size_t length, unsigned flags)
1.5759 +{
1.5760 + AssertHeapIsIdle(cx);
1.5761 + CHECK_REQUEST(cx);
1.5762 + jschar *chars = InflateString(cx, bytes, &length);
1.5763 + if (!chars)
1.5764 + return nullptr;
1.5765 +
1.5766 + RegExpStatics *res = obj->as<GlobalObject>().getRegExpStatics();
1.5767 + RegExpObject *reobj = RegExpObject::create(cx, res, chars, length,
1.5768 + RegExpFlag(flags), nullptr);
1.5769 + js_free(chars);
1.5770 + return reobj;
1.5771 +}
1.5772 +
1.5773 +JS_PUBLIC_API(JSObject *)
1.5774 +JS_NewUCRegExpObject(JSContext *cx, HandleObject obj, jschar *chars, size_t length,
1.5775 + unsigned flags)
1.5776 +{
1.5777 + AssertHeapIsIdle(cx);
1.5778 + CHECK_REQUEST(cx);
1.5779 + RegExpStatics *res = obj->as<GlobalObject>().getRegExpStatics();
1.5780 + return RegExpObject::create(cx, res, chars, length,
1.5781 + RegExpFlag(flags), nullptr);
1.5782 +}
1.5783 +
1.5784 +JS_PUBLIC_API(void)
1.5785 +JS_SetRegExpInput(JSContext *cx, HandleObject obj, HandleString input, bool multiline)
1.5786 +{
1.5787 + AssertHeapIsIdle(cx);
1.5788 + CHECK_REQUEST(cx);
1.5789 + assertSameCompartment(cx, input);
1.5790 +
1.5791 + obj->as<GlobalObject>().getRegExpStatics()->reset(cx, input, !!multiline);
1.5792 +}
1.5793 +
1.5794 +JS_PUBLIC_API(void)
1.5795 +JS_ClearRegExpStatics(JSContext *cx, HandleObject obj)
1.5796 +{
1.5797 + AssertHeapIsIdle(cx);
1.5798 + CHECK_REQUEST(cx);
1.5799 + JS_ASSERT(obj);
1.5800 +
1.5801 + obj->as<GlobalObject>().getRegExpStatics()->clear();
1.5802 +}
1.5803 +
1.5804 +JS_PUBLIC_API(bool)
1.5805 +JS_ExecuteRegExp(JSContext *cx, HandleObject obj, HandleObject reobj, jschar *chars,
1.5806 + size_t length, size_t *indexp, bool test, MutableHandleValue rval)
1.5807 +{
1.5808 + AssertHeapIsIdle(cx);
1.5809 + CHECK_REQUEST(cx);
1.5810 +
1.5811 + RegExpStatics *res = obj->as<GlobalObject>().getRegExpStatics();
1.5812 +
1.5813 + return ExecuteRegExpLegacy(cx, res, reobj->as<RegExpObject>(), NullPtr(), chars, length, indexp,
1.5814 + test, rval);
1.5815 +}
1.5816 +
1.5817 +JS_PUBLIC_API(JSObject *)
1.5818 +JS_NewRegExpObjectNoStatics(JSContext *cx, char *bytes, size_t length, unsigned flags)
1.5819 +{
1.5820 + AssertHeapIsIdle(cx);
1.5821 + CHECK_REQUEST(cx);
1.5822 + jschar *chars = InflateString(cx, bytes, &length);
1.5823 + if (!chars)
1.5824 + return nullptr;
1.5825 + RegExpObject *reobj = RegExpObject::createNoStatics(cx, chars, length,
1.5826 + RegExpFlag(flags), nullptr);
1.5827 + js_free(chars);
1.5828 + return reobj;
1.5829 +}
1.5830 +
1.5831 +JS_PUBLIC_API(JSObject *)
1.5832 +JS_NewUCRegExpObjectNoStatics(JSContext *cx, jschar *chars, size_t length, unsigned flags)
1.5833 +{
1.5834 + AssertHeapIsIdle(cx);
1.5835 + CHECK_REQUEST(cx);
1.5836 + return RegExpObject::createNoStatics(cx, chars, length,
1.5837 + RegExpFlag(flags), nullptr);
1.5838 +}
1.5839 +
1.5840 +JS_PUBLIC_API(bool)
1.5841 +JS_ExecuteRegExpNoStatics(JSContext *cx, HandleObject obj, jschar *chars, size_t length,
1.5842 + size_t *indexp, bool test, MutableHandleValue rval)
1.5843 +{
1.5844 + AssertHeapIsIdle(cx);
1.5845 + CHECK_REQUEST(cx);
1.5846 +
1.5847 + return ExecuteRegExpLegacy(cx, nullptr, obj->as<RegExpObject>(), NullPtr(), chars, length,
1.5848 + indexp, test, rval);
1.5849 +}
1.5850 +
1.5851 +JS_PUBLIC_API(bool)
1.5852 +JS_ObjectIsRegExp(JSContext *cx, HandleObject obj)
1.5853 +{
1.5854 + assertSameCompartment(cx, obj);
1.5855 + return ObjectClassIs(obj, ESClass_RegExp, cx);
1.5856 +}
1.5857 +
1.5858 +JS_PUBLIC_API(unsigned)
1.5859 +JS_GetRegExpFlags(JSContext *cx, HandleObject obj)
1.5860 +{
1.5861 + AssertHeapIsIdle(cx);
1.5862 + CHECK_REQUEST(cx);
1.5863 +
1.5864 + return obj->as<RegExpObject>().getFlags();
1.5865 +}
1.5866 +
1.5867 +JS_PUBLIC_API(JSString *)
1.5868 +JS_GetRegExpSource(JSContext *cx, HandleObject obj)
1.5869 +{
1.5870 + AssertHeapIsIdle(cx);
1.5871 + CHECK_REQUEST(cx);
1.5872 +
1.5873 + return obj->as<RegExpObject>().getSource();
1.5874 +}
1.5875 +
1.5876 +/************************************************************************/
1.5877 +
1.5878 +JS_PUBLIC_API(bool)
1.5879 +JS_SetDefaultLocale(JSRuntime *rt, const char *locale)
1.5880 +{
1.5881 + AssertHeapIsIdle(rt);
1.5882 + return rt->setDefaultLocale(locale);
1.5883 +}
1.5884 +
1.5885 +JS_PUBLIC_API(const char*)
1.5886 +JS_GetDefaultLocale(JSRuntime *rt)
1.5887 +{
1.5888 + AssertHeapIsIdle(rt);
1.5889 + return rt->getDefaultLocale();
1.5890 +}
1.5891 +
1.5892 +JS_PUBLIC_API(void)
1.5893 +JS_ResetDefaultLocale(JSRuntime *rt)
1.5894 +{
1.5895 + AssertHeapIsIdle(rt);
1.5896 + rt->resetDefaultLocale();
1.5897 +}
1.5898 +
1.5899 +JS_PUBLIC_API(void)
1.5900 +JS_SetLocaleCallbacks(JSRuntime *rt, JSLocaleCallbacks *callbacks)
1.5901 +{
1.5902 + AssertHeapIsIdle(rt);
1.5903 + rt->localeCallbacks = callbacks;
1.5904 +}
1.5905 +
1.5906 +JS_PUBLIC_API(JSLocaleCallbacks *)
1.5907 +JS_GetLocaleCallbacks(JSRuntime *rt)
1.5908 +{
1.5909 + /* This function can be called by a finalizer. */
1.5910 + return rt->localeCallbacks;
1.5911 +}
1.5912 +
1.5913 +/************************************************************************/
1.5914 +
1.5915 +JS_PUBLIC_API(bool)
1.5916 +JS_IsExceptionPending(JSContext *cx)
1.5917 +{
1.5918 + /* This function can be called by a finalizer. */
1.5919 + return (bool) cx->isExceptionPending();
1.5920 +}
1.5921 +
1.5922 +JS_PUBLIC_API(bool)
1.5923 +JS_GetPendingException(JSContext *cx, MutableHandleValue vp)
1.5924 +{
1.5925 + AssertHeapIsIdle(cx);
1.5926 + CHECK_REQUEST(cx);
1.5927 + if (!cx->isExceptionPending())
1.5928 + return false;
1.5929 + return cx->getPendingException(vp);
1.5930 +}
1.5931 +
1.5932 +JS_PUBLIC_API(void)
1.5933 +JS_SetPendingException(JSContext *cx, HandleValue value)
1.5934 +{
1.5935 + AssertHeapIsIdle(cx);
1.5936 + CHECK_REQUEST(cx);
1.5937 + assertSameCompartment(cx, value);
1.5938 + cx->setPendingException(value);
1.5939 +}
1.5940 +
1.5941 +JS_PUBLIC_API(void)
1.5942 +JS_ClearPendingException(JSContext *cx)
1.5943 +{
1.5944 + AssertHeapIsIdle(cx);
1.5945 + cx->clearPendingException();
1.5946 +}
1.5947 +
1.5948 +JS_PUBLIC_API(bool)
1.5949 +JS_ReportPendingException(JSContext *cx)
1.5950 +{
1.5951 + AssertHeapIsIdle(cx);
1.5952 + CHECK_REQUEST(cx);
1.5953 +
1.5954 + // This can only fail due to oom.
1.5955 + bool ok = js_ReportUncaughtException(cx);
1.5956 + JS_ASSERT(!cx->isExceptionPending());
1.5957 + return ok;
1.5958 +}
1.5959 +
1.5960 +JS::AutoSaveExceptionState::AutoSaveExceptionState(JSContext *cx)
1.5961 + : context(cx), wasThrowing(cx->throwing), exceptionValue(cx)
1.5962 +{
1.5963 + AssertHeapIsIdle(cx);
1.5964 + CHECK_REQUEST(cx);
1.5965 + if (wasThrowing) {
1.5966 + exceptionValue = cx->unwrappedException_;
1.5967 + cx->clearPendingException();
1.5968 + }
1.5969 +}
1.5970 +
1.5971 +void
1.5972 +JS::AutoSaveExceptionState::restore()
1.5973 +{
1.5974 + context->throwing = wasThrowing;
1.5975 + context->unwrappedException_ = exceptionValue;
1.5976 + drop();
1.5977 +}
1.5978 +
1.5979 +JS::AutoSaveExceptionState::~AutoSaveExceptionState()
1.5980 +{
1.5981 + if (wasThrowing && !context->isExceptionPending()) {
1.5982 + context->throwing = true;
1.5983 + context->unwrappedException_ = exceptionValue;
1.5984 + }
1.5985 +}
1.5986 +
1.5987 +struct JSExceptionState {
1.5988 + bool throwing;
1.5989 + jsval exception;
1.5990 +};
1.5991 +
1.5992 +JS_PUBLIC_API(JSExceptionState *)
1.5993 +JS_SaveExceptionState(JSContext *cx)
1.5994 +{
1.5995 + JSExceptionState *state;
1.5996 +
1.5997 + AssertHeapIsIdle(cx);
1.5998 + CHECK_REQUEST(cx);
1.5999 + state = cx->pod_malloc<JSExceptionState>();
1.6000 + if (state) {
1.6001 + state->throwing =
1.6002 + JS_GetPendingException(cx, MutableHandleValue::fromMarkedLocation(&state->exception));
1.6003 + if (state->throwing && JSVAL_IS_GCTHING(state->exception))
1.6004 + AddValueRoot(cx, &state->exception, "JSExceptionState.exception");
1.6005 + }
1.6006 + return state;
1.6007 +}
1.6008 +
1.6009 +JS_PUBLIC_API(void)
1.6010 +JS_RestoreExceptionState(JSContext *cx, JSExceptionState *state)
1.6011 +{
1.6012 + AssertHeapIsIdle(cx);
1.6013 + CHECK_REQUEST(cx);
1.6014 + if (state) {
1.6015 + if (state->throwing)
1.6016 + JS_SetPendingException(cx, HandleValue::fromMarkedLocation(&state->exception));
1.6017 + else
1.6018 + JS_ClearPendingException(cx);
1.6019 + JS_DropExceptionState(cx, state);
1.6020 + }
1.6021 +}
1.6022 +
1.6023 +JS_PUBLIC_API(void)
1.6024 +JS_DropExceptionState(JSContext *cx, JSExceptionState *state)
1.6025 +{
1.6026 + AssertHeapIsIdle(cx);
1.6027 + CHECK_REQUEST(cx);
1.6028 + if (state) {
1.6029 + if (state->throwing && JSVAL_IS_GCTHING(state->exception)) {
1.6030 + assertSameCompartment(cx, state->exception);
1.6031 + RemoveRoot(cx->runtime(), &state->exception);
1.6032 + }
1.6033 + js_free(state);
1.6034 + }
1.6035 +}
1.6036 +
1.6037 +JS_PUBLIC_API(JSErrorReport *)
1.6038 +JS_ErrorFromException(JSContext *cx, HandleObject obj)
1.6039 +{
1.6040 + AssertHeapIsIdle(cx);
1.6041 + CHECK_REQUEST(cx);
1.6042 + assertSameCompartment(cx, obj);
1.6043 + return js_ErrorFromException(cx, obj);
1.6044 +}
1.6045 +
1.6046 +JS_PUBLIC_API(bool)
1.6047 +JS_ThrowStopIteration(JSContext *cx)
1.6048 +{
1.6049 + AssertHeapIsIdle(cx);
1.6050 + return js_ThrowStopIteration(cx);
1.6051 +}
1.6052 +
1.6053 +JS_PUBLIC_API(bool)
1.6054 +JS_IsStopIteration(jsval v)
1.6055 +{
1.6056 + return v.isObject() && v.toObject().is<StopIterationObject>();
1.6057 +}
1.6058 +
1.6059 +JS_PUBLIC_API(intptr_t)
1.6060 +JS_GetCurrentThread()
1.6061 +{
1.6062 +#ifdef JS_THREADSAFE
1.6063 + return reinterpret_cast<intptr_t>(PR_GetCurrentThread());
1.6064 +#else
1.6065 + return 0;
1.6066 +#endif
1.6067 +}
1.6068 +
1.6069 +extern MOZ_NEVER_INLINE JS_PUBLIC_API(void)
1.6070 +JS_AbortIfWrongThread(JSRuntime *rt)
1.6071 +{
1.6072 + if (!CurrentThreadCanAccessRuntime(rt))
1.6073 + MOZ_CRASH();
1.6074 + if (!js::TlsPerThreadData.get()->associatedWith(rt))
1.6075 + MOZ_CRASH();
1.6076 +}
1.6077 +
1.6078 +#ifdef JS_GC_ZEAL
1.6079 +JS_PUBLIC_API(void)
1.6080 +JS_SetGCZeal(JSContext *cx, uint8_t zeal, uint32_t frequency)
1.6081 +{
1.6082 + SetGCZeal(cx->runtime(), zeal, frequency);
1.6083 +}
1.6084 +
1.6085 +JS_PUBLIC_API(void)
1.6086 +JS_ScheduleGC(JSContext *cx, uint32_t count)
1.6087 +{
1.6088 + cx->runtime()->gcNextScheduled = count;
1.6089 +}
1.6090 +#endif
1.6091 +
1.6092 +JS_PUBLIC_API(void)
1.6093 +JS_SetParallelParsingEnabled(JSRuntime *rt, bool enabled)
1.6094 +{
1.6095 +#ifdef JS_ION
1.6096 + rt->setParallelParsingEnabled(enabled);
1.6097 +#endif
1.6098 +}
1.6099 +
1.6100 +JS_PUBLIC_API(void)
1.6101 +JS_SetParallelIonCompilationEnabled(JSRuntime *rt, bool enabled)
1.6102 +{
1.6103 +#ifdef JS_ION
1.6104 + rt->setParallelIonCompilationEnabled(enabled);
1.6105 +#endif
1.6106 +}
1.6107 +
1.6108 +JS_PUBLIC_API(void)
1.6109 +JS_SetGlobalJitCompilerOption(JSRuntime *rt, JSJitCompilerOption opt, uint32_t value)
1.6110 +{
1.6111 +#ifdef JS_ION
1.6112 +
1.6113 + switch (opt) {
1.6114 + case JSJITCOMPILER_BASELINE_USECOUNT_TRIGGER:
1.6115 + if (value == uint32_t(-1)) {
1.6116 + jit::JitOptions defaultValues;
1.6117 + value = defaultValues.baselineUsesBeforeCompile;
1.6118 + }
1.6119 + jit::js_JitOptions.baselineUsesBeforeCompile = value;
1.6120 + break;
1.6121 + case JSJITCOMPILER_ION_USECOUNT_TRIGGER:
1.6122 + if (value == uint32_t(-1)) {
1.6123 + jit::js_JitOptions.resetUsesBeforeCompile();
1.6124 + break;
1.6125 + }
1.6126 + jit::js_JitOptions.setUsesBeforeCompile(value);
1.6127 + if (value == 0)
1.6128 + jit::js_JitOptions.setEagerCompilation();
1.6129 + break;
1.6130 + case JSJITCOMPILER_ION_ENABLE:
1.6131 + if (value == 1) {
1.6132 + JS::RuntimeOptionsRef(rt).setIon(true);
1.6133 + IonSpew(js::jit::IonSpew_Scripts, "Enable ion");
1.6134 + } else if (value == 0) {
1.6135 + JS::RuntimeOptionsRef(rt).setIon(false);
1.6136 + IonSpew(js::jit::IonSpew_Scripts, "Disable ion");
1.6137 + }
1.6138 + break;
1.6139 + case JSJITCOMPILER_BASELINE_ENABLE:
1.6140 + if (value == 1) {
1.6141 + JS::RuntimeOptionsRef(rt).setBaseline(true);
1.6142 + IonSpew(js::jit::IonSpew_BaselineScripts, "Enable baseline");
1.6143 + } else if (value == 0) {
1.6144 + JS::RuntimeOptionsRef(rt).setBaseline(false);
1.6145 + IonSpew(js::jit::IonSpew_BaselineScripts, "Disable baseline");
1.6146 + }
1.6147 + break;
1.6148 + case JSJITCOMPILER_PARALLEL_COMPILATION_ENABLE:
1.6149 + if (value == 1) {
1.6150 + rt->setParallelIonCompilationEnabled(true);
1.6151 + IonSpew(js::jit::IonSpew_Scripts, "Enable parallel compilation");
1.6152 + } else if (value == 0) {
1.6153 + rt->setParallelIonCompilationEnabled(false);
1.6154 + IonSpew(js::jit::IonSpew_Scripts, "Disable parallel compilation");
1.6155 + }
1.6156 + break;
1.6157 + default:
1.6158 + break;
1.6159 + }
1.6160 +#endif
1.6161 +}
1.6162 +
1.6163 +JS_PUBLIC_API(int)
1.6164 +JS_GetGlobalJitCompilerOption(JSRuntime *rt, JSJitCompilerOption opt)
1.6165 +{
1.6166 +#ifdef JS_ION
1.6167 + switch (opt) {
1.6168 + case JSJITCOMPILER_BASELINE_USECOUNT_TRIGGER:
1.6169 + return jit::js_JitOptions.baselineUsesBeforeCompile;
1.6170 + case JSJITCOMPILER_ION_USECOUNT_TRIGGER:
1.6171 + return jit::js_JitOptions.forcedDefaultIonUsesBeforeCompile;
1.6172 + case JSJITCOMPILER_ION_ENABLE:
1.6173 + return JS::RuntimeOptionsRef(rt).ion();
1.6174 + case JSJITCOMPILER_BASELINE_ENABLE:
1.6175 + return JS::RuntimeOptionsRef(rt).baseline();
1.6176 + case JSJITCOMPILER_PARALLEL_COMPILATION_ENABLE:
1.6177 + return rt->canUseParallelIonCompilation();
1.6178 + default:
1.6179 + break;
1.6180 + }
1.6181 +#endif
1.6182 + return 0;
1.6183 +}
1.6184 +
1.6185 +/************************************************************************/
1.6186 +
1.6187 +#if !defined(STATIC_EXPORTABLE_JS_API) && !defined(STATIC_JS_API) && defined(XP_WIN)
1.6188 +
1.6189 +#include "jswin.h"
1.6190 +
1.6191 +/*
1.6192 + * Initialization routine for the JS DLL.
1.6193 + */
1.6194 +BOOL WINAPI DllMain (HINSTANCE hDLL, DWORD dwReason, LPVOID lpReserved)
1.6195 +{
1.6196 + return TRUE;
1.6197 +}
1.6198 +
1.6199 +#endif
1.6200 +
1.6201 +JS_PUBLIC_API(bool)
1.6202 +JS_IndexToId(JSContext *cx, uint32_t index, MutableHandleId id)
1.6203 +{
1.6204 + return IndexToId(cx, index, id);
1.6205 +}
1.6206 +
1.6207 +JS_PUBLIC_API(bool)
1.6208 +JS_CharsToId(JSContext* cx, JS::TwoByteChars chars, MutableHandleId idp)
1.6209 +{
1.6210 + RootedAtom atom(cx, AtomizeChars(cx, chars.start().get(), chars.length()));
1.6211 + if (!atom)
1.6212 + return false;
1.6213 +#ifdef DEBUG
1.6214 + uint32_t dummy;
1.6215 + MOZ_ASSERT(!atom->isIndex(&dummy), "API misuse: |chars| must not encode an index");
1.6216 +#endif
1.6217 + idp.set(AtomToId(atom));
1.6218 + return true;
1.6219 +}
1.6220 +
1.6221 +JS_PUBLIC_API(bool)
1.6222 +JS_IsIdentifier(JSContext *cx, HandleString str, bool *isIdentifier)
1.6223 +{
1.6224 + assertSameCompartment(cx, str);
1.6225 +
1.6226 + JSLinearString* linearStr = str->ensureLinear(cx);
1.6227 + if (!linearStr)
1.6228 + return false;
1.6229 +
1.6230 + *isIdentifier = js::frontend::IsIdentifier(linearStr);
1.6231 + return true;
1.6232 +}
1.6233 +
1.6234 +namespace JS {
1.6235 +
1.6236 +void
1.6237 +AutoFilename::reset(void *newScriptSource)
1.6238 +{
1.6239 + if (newScriptSource)
1.6240 + reinterpret_cast<ScriptSource*>(newScriptSource)->incref();
1.6241 + if (scriptSource_)
1.6242 + reinterpret_cast<ScriptSource*>(scriptSource_)->decref();
1.6243 + scriptSource_ = newScriptSource;
1.6244 +}
1.6245 +
1.6246 +const char *
1.6247 +AutoFilename::get() const
1.6248 +{
1.6249 + JS_ASSERT(scriptSource_);
1.6250 + return reinterpret_cast<ScriptSource*>(scriptSource_)->filename();
1.6251 +}
1.6252 +
1.6253 +JS_PUBLIC_API(bool)
1.6254 +DescribeScriptedCaller(JSContext *cx, AutoFilename *filename, unsigned *lineno)
1.6255 +{
1.6256 + if (lineno)
1.6257 + *lineno = 0;
1.6258 +
1.6259 + NonBuiltinFrameIter i(cx);
1.6260 + if (i.done())
1.6261 + return false;
1.6262 +
1.6263 + // If the caller is hidden, the embedding wants us to return false here so
1.6264 + // that it can check its own stack (see HideScriptedCaller).
1.6265 + if (i.activation()->scriptedCallerIsHidden())
1.6266 + return false;
1.6267 +
1.6268 + if (filename)
1.6269 + filename->reset(i.scriptSource());
1.6270 + if (lineno)
1.6271 + *lineno = i.computeLine();
1.6272 + return true;
1.6273 +}
1.6274 +
1.6275 +JS_PUBLIC_API(JSObject *)
1.6276 +GetScriptedCallerGlobal(JSContext *cx)
1.6277 +{
1.6278 + NonBuiltinFrameIter i(cx);
1.6279 + if (i.done())
1.6280 + return nullptr;
1.6281 +
1.6282 + // If the caller is hidden, the embedding wants us to return null here so
1.6283 + // that it can check its own stack (see HideScriptedCaller).
1.6284 + if (i.activation()->scriptedCallerIsHidden())
1.6285 + return nullptr;
1.6286 +
1.6287 + GlobalObject *global = i.activation()->compartment()->maybeGlobal();
1.6288 +
1.6289 + // Noone should be running code in the atoms compartment or running code in
1.6290 + // a compartment without any live objects, so there should definitely be a
1.6291 + // live global.
1.6292 + JS_ASSERT(global);
1.6293 +
1.6294 + return global;
1.6295 +}
1.6296 +
1.6297 +JS_PUBLIC_API(void)
1.6298 +HideScriptedCaller(JSContext *cx)
1.6299 +{
1.6300 + MOZ_ASSERT(cx);
1.6301 +
1.6302 + // If there's no accessible activation on the stack, we'll return null from
1.6303 + // DescribeScriptedCaller anyway, so there's no need to annotate anything.
1.6304 + Activation *act = cx->runtime()->mainThread.activation();
1.6305 + if (!act)
1.6306 + return;
1.6307 + act->hideScriptedCaller();
1.6308 +}
1.6309 +
1.6310 +JS_PUBLIC_API(void)
1.6311 +UnhideScriptedCaller(JSContext *cx)
1.6312 +{
1.6313 + Activation *act = cx->runtime()->mainThread.activation();
1.6314 + if (!act)
1.6315 + return;
1.6316 + act->unhideScriptedCaller();
1.6317 +}
1.6318 +
1.6319 +} /* namespace JS */
1.6320 +
1.6321 +#ifdef JS_THREADSAFE
1.6322 +static PRStatus
1.6323 +CallOnce(void *func)
1.6324 +{
1.6325 + JSInitCallback init = JS_DATA_TO_FUNC_PTR(JSInitCallback, func);
1.6326 + return init() ? PR_SUCCESS : PR_FAILURE;
1.6327 +}
1.6328 +#endif
1.6329 +
1.6330 +JS_PUBLIC_API(bool)
1.6331 +JS_CallOnce(JSCallOnceType *once, JSInitCallback func)
1.6332 +{
1.6333 +#ifdef JS_THREADSAFE
1.6334 + return PR_CallOnceWithArg(once, CallOnce, JS_FUNC_TO_DATA_PTR(void *, func)) == PR_SUCCESS;
1.6335 +#else
1.6336 + if (!*once) {
1.6337 + *once = true;
1.6338 + return func();
1.6339 + } else {
1.6340 + return true;
1.6341 + }
1.6342 +#endif
1.6343 +}
1.6344 +
1.6345 +AutoGCRooter::AutoGCRooter(JSContext *cx, ptrdiff_t tag)
1.6346 + : down(ContextFriendFields::get(cx)->autoGCRooters),
1.6347 + tag_(tag),
1.6348 + stackTop(&ContextFriendFields::get(cx)->autoGCRooters)
1.6349 +{
1.6350 + JS_ASSERT(this != *stackTop);
1.6351 + *stackTop = this;
1.6352 +}
1.6353 +
1.6354 +AutoGCRooter::AutoGCRooter(ContextFriendFields *cx, ptrdiff_t tag)
1.6355 + : down(cx->autoGCRooters),
1.6356 + tag_(tag),
1.6357 + stackTop(&cx->autoGCRooters)
1.6358 +{
1.6359 + JS_ASSERT(this != *stackTop);
1.6360 + *stackTop = this;
1.6361 +}
1.6362 +
1.6363 +#ifdef DEBUG
1.6364 +JS_PUBLIC_API(void)
1.6365 +JS::AssertArgumentsAreSane(JSContext *cx, HandleValue value)
1.6366 +{
1.6367 + AssertHeapIsIdle(cx);
1.6368 + CHECK_REQUEST(cx);
1.6369 + assertSameCompartment(cx, value);
1.6370 +}
1.6371 +#endif /* DEBUG */
1.6372 +
1.6373 +JS_PUBLIC_API(void *)
1.6374 +JS_EncodeScript(JSContext *cx, HandleScript scriptArg, uint32_t *lengthp)
1.6375 +{
1.6376 + XDREncoder encoder(cx);
1.6377 + RootedScript script(cx, scriptArg);
1.6378 + if (!encoder.codeScript(&script))
1.6379 + return nullptr;
1.6380 + return encoder.forgetData(lengthp);
1.6381 +}
1.6382 +
1.6383 +JS_PUBLIC_API(void *)
1.6384 +JS_EncodeInterpretedFunction(JSContext *cx, HandleObject funobjArg, uint32_t *lengthp)
1.6385 +{
1.6386 + XDREncoder encoder(cx);
1.6387 + RootedObject funobj(cx, funobjArg);
1.6388 + if (!encoder.codeFunction(&funobj))
1.6389 + return nullptr;
1.6390 + return encoder.forgetData(lengthp);
1.6391 +}
1.6392 +
1.6393 +JS_PUBLIC_API(JSScript *)
1.6394 +JS_DecodeScript(JSContext *cx, const void *data, uint32_t length,
1.6395 + JSPrincipals *originPrincipals)
1.6396 +{
1.6397 + XDRDecoder decoder(cx, data, length, originPrincipals);
1.6398 + RootedScript script(cx);
1.6399 + if (!decoder.codeScript(&script))
1.6400 + return nullptr;
1.6401 + return script;
1.6402 +}
1.6403 +
1.6404 +JS_PUBLIC_API(JSObject *)
1.6405 +JS_DecodeInterpretedFunction(JSContext *cx, const void *data, uint32_t length,
1.6406 + JSPrincipals *originPrincipals)
1.6407 +{
1.6408 + XDRDecoder decoder(cx, data, length, originPrincipals);
1.6409 + RootedObject funobj(cx);
1.6410 + if (!decoder.codeFunction(&funobj))
1.6411 + return nullptr;
1.6412 + return funobj;
1.6413 +}
1.6414 +
1.6415 +JS_PUBLIC_API(bool)
1.6416 +JS_PreventExtensions(JSContext *cx, JS::HandleObject obj)
1.6417 +{
1.6418 + bool extensible;
1.6419 + if (!JSObject::isExtensible(cx, obj, &extensible))
1.6420 + return false;
1.6421 + if (!extensible)
1.6422 + return true;
1.6423 + return JSObject::preventExtensions(cx, obj);
1.6424 +}
1.6425 +
1.6426 +JS_PUBLIC_API(void)
1.6427 +JS::SetAsmJSCacheOps(JSRuntime *rt, const JS::AsmJSCacheOps *ops)
1.6428 +{
1.6429 + rt->asmJSCacheOps = *ops;
1.6430 +}
1.6431 +
1.6432 +char *
1.6433 +JSAutoByteString::encodeLatin1(ExclusiveContext *cx, JSString *str)
1.6434 +{
1.6435 + JSLinearString *linear = str->ensureLinear(cx);
1.6436 + if (!linear)
1.6437 + return nullptr;
1.6438 +
1.6439 + mBytes = LossyTwoByteCharsToNewLatin1CharsZ(cx, linear->range()).c_str();
1.6440 + return mBytes;
1.6441 +}
1.6442 +
1.6443 +JS_PUBLIC_API(void)
1.6444 +JS::SetLargeAllocationFailureCallback(JSRuntime *rt, JS::LargeAllocationFailureCallback lafc)
1.6445 +{
1.6446 + rt->largeAllocationFailureCallback = lafc;
1.6447 +}
1.6448 +
1.6449 +JS_PUBLIC_API(void)
1.6450 +JS::SetOutOfMemoryCallback(JSRuntime *rt, OutOfMemoryCallback cb)
1.6451 +{
1.6452 + rt->oomCallback = cb;
1.6453 +}
1.6454 +
