1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/jsd/jsd_val.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,748 @@
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 Debugging support - Value and Property support
1.12 + */
1.13 +
1.14 +#include "jsd.h"
1.15 +#include "jsapi.h"
1.16 +#include "jsfriendapi.h"
1.17 +#include "jswrapper.h"
1.18 +#include "nsCxPusher.h"
1.19 +
1.20 +using mozilla::AutoSafeJSContext;
1.21 +
1.22 +#ifdef DEBUG
1.23 +void JSD_ASSERT_VALID_VALUE(JSDValue* jsdval)
1.24 +{
1.25 + MOZ_ASSERT(jsdval);
1.26 + MOZ_ASSERT(jsdval->nref > 0);
1.27 + if(!JS_CLIST_IS_EMPTY(&jsdval->props))
1.28 + {
1.29 + MOZ_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS));
1.30 + MOZ_ASSERT(!JSVAL_IS_PRIMITIVE(jsdval->val));
1.31 + }
1.32 +
1.33 + if(jsdval->proto)
1.34 + {
1.35 + MOZ_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_PROTO));
1.36 + MOZ_ASSERT(jsdval->proto->nref > 0);
1.37 + }
1.38 + if(jsdval->parent)
1.39 + {
1.40 + MOZ_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_PARENT));
1.41 + MOZ_ASSERT(jsdval->parent->nref > 0);
1.42 + }
1.43 + if(jsdval->ctor)
1.44 + {
1.45 + MOZ_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_CTOR));
1.46 + MOZ_ASSERT(jsdval->ctor->nref > 0);
1.47 + }
1.48 +}
1.49 +
1.50 +void JSD_ASSERT_VALID_PROPERTY(JSDProperty* jsdprop)
1.51 +{
1.52 + MOZ_ASSERT(jsdprop);
1.53 + MOZ_ASSERT(jsdprop->name);
1.54 + MOZ_ASSERT(jsdprop->name->nref > 0);
1.55 + MOZ_ASSERT(jsdprop->val);
1.56 + MOZ_ASSERT(jsdprop->val->nref > 0);
1.57 + if(jsdprop->alias)
1.58 + MOZ_ASSERT(jsdprop->alias->nref > 0);
1.59 +}
1.60 +#endif
1.61 +
1.62 +
1.63 +bool
1.64 +jsd_IsValueObject(JSDContext* jsdc, JSDValue* jsdval)
1.65 +{
1.66 + return !JSVAL_IS_PRIMITIVE(jsdval->val) || JSVAL_IS_NULL(jsdval->val);
1.67 +}
1.68 +
1.69 +bool
1.70 +jsd_IsValueNumber(JSDContext* jsdc, JSDValue* jsdval)
1.71 +{
1.72 + return JSVAL_IS_NUMBER(jsdval->val);
1.73 +}
1.74 +
1.75 +bool
1.76 +jsd_IsValueInt(JSDContext* jsdc, JSDValue* jsdval)
1.77 +{
1.78 + return JSVAL_IS_INT(jsdval->val);
1.79 +}
1.80 +
1.81 +bool
1.82 +jsd_IsValueDouble(JSDContext* jsdc, JSDValue* jsdval)
1.83 +{
1.84 + return JSVAL_IS_DOUBLE(jsdval->val);
1.85 +}
1.86 +
1.87 +bool
1.88 +jsd_IsValueString(JSDContext* jsdc, JSDValue* jsdval)
1.89 +{
1.90 + return JSVAL_IS_STRING(jsdval->val);
1.91 +}
1.92 +
1.93 +bool
1.94 +jsd_IsValueBoolean(JSDContext* jsdc, JSDValue* jsdval)
1.95 +{
1.96 + return JSVAL_IS_BOOLEAN(jsdval->val);
1.97 +}
1.98 +
1.99 +bool
1.100 +jsd_IsValueNull(JSDContext* jsdc, JSDValue* jsdval)
1.101 +{
1.102 + return JSVAL_IS_NULL(jsdval->val);
1.103 +}
1.104 +
1.105 +bool
1.106 +jsd_IsValueVoid(JSDContext* jsdc, JSDValue* jsdval)
1.107 +{
1.108 + return JSVAL_IS_VOID(jsdval->val);
1.109 +}
1.110 +
1.111 +bool
1.112 +jsd_IsValuePrimitive(JSDContext* jsdc, JSDValue* jsdval)
1.113 +{
1.114 + return JSVAL_IS_PRIMITIVE(jsdval->val);
1.115 +}
1.116 +
1.117 +bool
1.118 +jsd_IsValueFunction(JSDContext* jsdc, JSDValue* jsdval)
1.119 +{
1.120 + AutoSafeJSContext cx; // NB: Actually unused.
1.121 + return !JSVAL_IS_PRIMITIVE(jsdval->val) &&
1.122 + JS_ObjectIsCallable(cx, JSVAL_TO_OBJECT(jsdval->val));
1.123 +}
1.124 +
1.125 +bool
1.126 +jsd_IsValueNative(JSDContext* jsdc, JSDValue* jsdval)
1.127 +{
1.128 + AutoSafeJSContext cx;
1.129 + JS::RootedFunction fun(cx);
1.130 +
1.131 + if(jsd_IsValueFunction(jsdc, jsdval))
1.132 + {
1.133 + JSAutoCompartment ac(cx, JSVAL_TO_OBJECT(jsdval->val));
1.134 + AutoSaveExceptionState as(cx);
1.135 + bool ok = false;
1.136 + fun = JSD_GetValueFunction(jsdc, jsdval);
1.137 + if(fun)
1.138 + ok = JS_GetFunctionScript(cx, fun) ? false : true;
1.139 + MOZ_ASSERT(fun);
1.140 + return ok;
1.141 + }
1.142 + return !JSVAL_IS_PRIMITIVE(jsdval->val);
1.143 +}
1.144 +
1.145 +/***************************************************************************/
1.146 +
1.147 +bool
1.148 +jsd_GetValueBoolean(JSDContext* jsdc, JSDValue* jsdval)
1.149 +{
1.150 + jsval val = jsdval->val;
1.151 + if(!JSVAL_IS_BOOLEAN(val))
1.152 + return false;
1.153 + return JSVAL_TO_BOOLEAN(val);
1.154 +}
1.155 +
1.156 +int32_t
1.157 +jsd_GetValueInt(JSDContext* jsdc, JSDValue* jsdval)
1.158 +{
1.159 + jsval val = jsdval->val;
1.160 + if(!JSVAL_IS_INT(val))
1.161 + return 0;
1.162 + return JSVAL_TO_INT(val);
1.163 +}
1.164 +
1.165 +double
1.166 +jsd_GetValueDouble(JSDContext* jsdc, JSDValue* jsdval)
1.167 +{
1.168 + if(!JSVAL_IS_DOUBLE(jsdval->val))
1.169 + return 0;
1.170 + return JSVAL_TO_DOUBLE(jsdval->val);
1.171 +}
1.172 +
1.173 +JSString*
1.174 +jsd_GetValueString(JSDContext* jsdc, JSDValue* jsdval)
1.175 +{
1.176 + AutoSafeJSContext cx;
1.177 + JS::RootedValue stringval(cx);
1.178 + JS::RootedString string(cx);
1.179 + JS::RootedObject scopeObj(cx);
1.180 +
1.181 + if(jsdval->string)
1.182 + return jsdval->string;
1.183 +
1.184 + /* Reuse the string without copying or re-rooting it */
1.185 + if(JSVAL_IS_STRING(jsdval->val)) {
1.186 + jsdval->string = JSVAL_TO_STRING(jsdval->val);
1.187 + return jsdval->string;
1.188 + }
1.189 +
1.190 + /* Objects call JS_ValueToString in their own compartment. */
1.191 + scopeObj = !JSVAL_IS_PRIMITIVE(jsdval->val) ? JSVAL_TO_OBJECT(jsdval->val) : jsdc->glob;
1.192 + {
1.193 + JSAutoCompartment ac(cx, scopeObj);
1.194 + AutoSaveExceptionState as(cx);
1.195 + JS::RootedValue v(cx, jsdval->val);
1.196 + string = JS::ToString(cx, v);
1.197 + }
1.198 +
1.199 + JSAutoCompartment ac2(cx, jsdc->glob);
1.200 + if(string) {
1.201 + stringval = STRING_TO_JSVAL(string);
1.202 + }
1.203 + if(!string || !JS_WrapValue(cx, &stringval)) {
1.204 + return nullptr;
1.205 + }
1.206 +
1.207 + jsdval->string = JSVAL_TO_STRING(stringval);
1.208 + if(!JS::AddNamedStringRoot(cx, &jsdval->string, "ValueString"))
1.209 + jsdval->string = nullptr;
1.210 +
1.211 + return jsdval->string;
1.212 +}
1.213 +
1.214 +JSString*
1.215 +jsd_GetValueFunctionId(JSDContext* jsdc, JSDValue* jsdval)
1.216 +{
1.217 + AutoSafeJSContext cx;
1.218 + JS::RootedFunction fun(cx);
1.219 +
1.220 + if(!jsdval->funName && jsd_IsValueFunction(jsdc, jsdval))
1.221 + {
1.222 + JSAutoCompartment ac(cx, JSVAL_TO_OBJECT(jsdval->val));
1.223 + AutoSaveExceptionState as(cx);
1.224 + fun = JSD_GetValueFunction(jsdc, jsdval);
1.225 + if(!fun)
1.226 + return nullptr;
1.227 + jsdval->funName = JS_GetFunctionId(fun);
1.228 +
1.229 + /* For compatibility we return "anonymous", not an empty string here. */
1.230 + if (!jsdval->funName)
1.231 + jsdval->funName = JS_GetAnonymousString(jsdc->jsrt);
1.232 + }
1.233 + return jsdval->funName;
1.234 +}
1.235 +
1.236 +/***************************************************************************/
1.237 +
1.238 +/*
1.239 + * Create a new JSD value referring to a jsval. Copy string values into the
1.240 + * JSD compartment. Leave all other GCTHINGs in their native compartments
1.241 + * and access them through cross-compartment calls.
1.242 + */
1.243 +JSDValue*
1.244 +jsd_NewValue(JSDContext* jsdc, jsval value)
1.245 +{
1.246 + JS::RootedValue val(jsdc->jsrt, value);
1.247 + AutoSafeJSContext cx;
1.248 + JSDValue* jsdval;
1.249 +
1.250 + if(!(jsdval = (JSDValue*) calloc(1, sizeof(JSDValue))))
1.251 + return nullptr;
1.252 +
1.253 + if(JSVAL_IS_GCTHING(val))
1.254 + {
1.255 + bool ok;
1.256 + JSAutoCompartment ac(cx, jsdc->glob);
1.257 +
1.258 + ok = JS::AddNamedValueRoot(cx, &jsdval->val, "JSDValue");
1.259 + if(ok && JSVAL_IS_STRING(val)) {
1.260 + if(!JS_WrapValue(cx, &val)) {
1.261 + ok = false;
1.262 + }
1.263 + }
1.264 +
1.265 + if(!ok)
1.266 + {
1.267 + free(jsdval);
1.268 + return nullptr;
1.269 + }
1.270 + }
1.271 + jsdval->val = val;
1.272 + jsdval->nref = 1;
1.273 + JS_INIT_CLIST(&jsdval->props);
1.274 +
1.275 + return jsdval;
1.276 +}
1.277 +
1.278 +void
1.279 +jsd_DropValue(JSDContext* jsdc, JSDValue* jsdval)
1.280 +{
1.281 + MOZ_ASSERT(jsdval->nref > 0);
1.282 + if(0 == --jsdval->nref)
1.283 + {
1.284 + jsd_RefreshValue(jsdc, jsdval);
1.285 + if(JSVAL_IS_GCTHING(jsdval->val))
1.286 + {
1.287 + AutoSafeJSContext cx;
1.288 + JSAutoCompartment ac(cx, jsdc->glob);
1.289 + JS::RemoveValueRoot(cx, &jsdval->val);
1.290 + }
1.291 + free(jsdval);
1.292 + }
1.293 +}
1.294 +
1.295 +jsval
1.296 +jsd_GetValueWrappedJSVal(JSDContext* jsdc, JSDValue* jsdval)
1.297 +{
1.298 + AutoSafeJSContext cx;
1.299 + JS::RootedValue val(cx, jsdval->val);
1.300 + if (!val.isPrimitive()) {
1.301 + JS::RootedObject obj(cx, &val.toObject());
1.302 + JSAutoCompartment ac(cx, obj);
1.303 + obj = JS_ObjectToOuterObject(cx, obj);
1.304 + if (!obj)
1.305 + {
1.306 + JS_ClearPendingException(cx);
1.307 + val = JSVAL_NULL;
1.308 + }
1.309 + else
1.310 + val = JS::ObjectValue(*obj);
1.311 + }
1.312 +
1.313 + return val;
1.314 +}
1.315 +
1.316 +static JSDProperty* _newProperty(JSDContext* jsdc, JS::HandleValue propId,
1.317 + JS::HandleValue propValue, JS::HandleValue propAlias,
1.318 + uint8_t propFlags, unsigned additionalFlags)
1.319 +{
1.320 + JSDProperty* jsdprop;
1.321 +
1.322 + if(!(jsdprop = (JSDProperty*) calloc(1, sizeof(JSDProperty))))
1.323 + return nullptr;
1.324 +
1.325 + JS_INIT_CLIST(&jsdprop->links);
1.326 + jsdprop->nref = 1;
1.327 + jsdprop->flags = propFlags | additionalFlags;
1.328 +
1.329 + if(!(jsdprop->name = jsd_NewValue(jsdc, propId)))
1.330 + goto new_prop_fail;
1.331 +
1.332 + if(!(jsdprop->val = jsd_NewValue(jsdc, propValue)))
1.333 + goto new_prop_fail;
1.334 +
1.335 + if((jsdprop->flags & JSDPD_ALIAS) &&
1.336 + !(jsdprop->alias = jsd_NewValue(jsdc, propAlias)))
1.337 + goto new_prop_fail;
1.338 +
1.339 + return jsdprop;
1.340 +new_prop_fail:
1.341 + jsd_DropProperty(jsdc, jsdprop);
1.342 + return nullptr;
1.343 +}
1.344 +
1.345 +static void _freeProps(JSDContext* jsdc, JSDValue* jsdval)
1.346 +{
1.347 + JSDProperty* jsdprop;
1.348 +
1.349 + while(jsdprop = (JSDProperty*)jsdval->props.next,
1.350 + jsdprop != (JSDProperty*)&jsdval->props)
1.351 + {
1.352 + JS_REMOVE_AND_INIT_LINK(&jsdprop->links);
1.353 + jsd_DropProperty(jsdc, jsdprop);
1.354 + }
1.355 + MOZ_ASSERT(JS_CLIST_IS_EMPTY(&jsdval->props));
1.356 + CLEAR_BIT_FLAG(jsdval->flags, GOT_PROPS);
1.357 +}
1.358 +
1.359 +static bool _buildProps(JSDContext* jsdc, JSDValue* jsdval)
1.360 +{
1.361 + AutoSafeJSContext cx;
1.362 + JS::RootedObject obj(cx);
1.363 + JSPropertyDescArray pda;
1.364 + unsigned i;
1.365 +
1.366 + MOZ_ASSERT(JS_CLIST_IS_EMPTY(&jsdval->props));
1.367 + MOZ_ASSERT(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS)));
1.368 + MOZ_ASSERT(!JSVAL_IS_PRIMITIVE(jsdval->val));
1.369 +
1.370 + if(JSVAL_IS_PRIMITIVE(jsdval->val))
1.371 + return false;
1.372 +
1.373 + obj = JSVAL_TO_OBJECT(jsdval->val);
1.374 +
1.375 + JSAutoCompartment ac(cx, obj);
1.376 +
1.377 + if(!JS_GetPropertyDescArray(cx, obj, &pda))
1.378 + {
1.379 + return false;
1.380 + }
1.381 +
1.382 + JS::RootedValue propId(cx);
1.383 + JS::RootedValue propValue(cx);
1.384 + JS::RootedValue propAlias(cx);
1.385 + uint8_t propFlags;
1.386 + for(i = 0; i < pda.length; i++)
1.387 + {
1.388 + propId = pda.array[i].id;
1.389 + propValue = pda.array[i].value;
1.390 + propAlias = pda.array[i].alias;
1.391 + propFlags = pda.array[i].flags;
1.392 + JSDProperty* prop = _newProperty(jsdc, propId, propValue, propAlias, propFlags, 0);
1.393 + if(!prop)
1.394 + {
1.395 + _freeProps(jsdc, jsdval);
1.396 + break;
1.397 + }
1.398 + JS_APPEND_LINK(&prop->links, &jsdval->props);
1.399 + }
1.400 + JS_PutPropertyDescArray(cx, &pda);
1.401 + SET_BIT_FLAG(jsdval->flags, GOT_PROPS);
1.402 + return !JS_CLIST_IS_EMPTY(&jsdval->props);
1.403 +}
1.404 +
1.405 +#undef DROP_CLEAR_VALUE
1.406 +#define DROP_CLEAR_VALUE(jsdc, x) if(x){jsd_DropValue(jsdc,x); x = nullptr;}
1.407 +
1.408 +void
1.409 +jsd_RefreshValue(JSDContext* jsdc, JSDValue* jsdval)
1.410 +{
1.411 + AutoSafeJSContext cx;
1.412 + if(jsdval->string)
1.413 + {
1.414 + /* if the jsval is a string, then we didn't need to root the string */
1.415 + if(!JSVAL_IS_STRING(jsdval->val))
1.416 + {
1.417 + JSAutoCompartment ac(cx, jsdc->glob);
1.418 + JS::RemoveStringRoot(cx, &jsdval->string);
1.419 + }
1.420 + jsdval->string = nullptr;
1.421 + }
1.422 +
1.423 + jsdval->funName = nullptr;
1.424 + jsdval->className = nullptr;
1.425 + DROP_CLEAR_VALUE(jsdc, jsdval->proto);
1.426 + DROP_CLEAR_VALUE(jsdc, jsdval->parent);
1.427 + DROP_CLEAR_VALUE(jsdc, jsdval->ctor);
1.428 + _freeProps(jsdc, jsdval);
1.429 + jsdval->flags = 0;
1.430 +}
1.431 +
1.432 +/***************************************************************************/
1.433 +
1.434 +unsigned
1.435 +jsd_GetCountOfProperties(JSDContext* jsdc, JSDValue* jsdval)
1.436 +{
1.437 + JSDProperty* jsdprop;
1.438 + unsigned count = 0;
1.439 +
1.440 + if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS)))
1.441 + if(!_buildProps(jsdc, jsdval))
1.442 + return 0;
1.443 +
1.444 + for(jsdprop = (JSDProperty*)jsdval->props.next;
1.445 + jsdprop != (JSDProperty*)&jsdval->props;
1.446 + jsdprop = (JSDProperty*)jsdprop->links.next)
1.447 + {
1.448 + count++;
1.449 + }
1.450 + return count;
1.451 +}
1.452 +
1.453 +JSDProperty*
1.454 +jsd_IterateProperties(JSDContext* jsdc, JSDValue* jsdval, JSDProperty **iterp)
1.455 +{
1.456 + JSDProperty* jsdprop = *iterp;
1.457 + if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS)))
1.458 + {
1.459 + MOZ_ASSERT(!jsdprop);
1.460 + if(!_buildProps(jsdc, jsdval))
1.461 + return nullptr;
1.462 + }
1.463 +
1.464 + if(!jsdprop)
1.465 + jsdprop = (JSDProperty*)jsdval->props.next;
1.466 + if(jsdprop == (JSDProperty*)&jsdval->props)
1.467 + return nullptr;
1.468 + *iterp = (JSDProperty*)jsdprop->links.next;
1.469 +
1.470 + MOZ_ASSERT(jsdprop);
1.471 + jsdprop->nref++;
1.472 + return jsdprop;
1.473 +}
1.474 +
1.475 +JSDProperty*
1.476 +jsd_GetValueProperty(JSDContext* jsdc, JSDValue* jsdval, JSString* nameStr)
1.477 +{
1.478 + JS::RootedString name(jsdc->jsrt, nameStr);
1.479 + AutoSafeJSContext cx;
1.480 + JSAutoCompartment acBase(cx, jsdc->glob);
1.481 + JSDProperty* jsdprop;
1.482 + JSDProperty* iter = nullptr;
1.483 + JS::RootedObject obj(cx);
1.484 + JS::RootedValue val(cx), nameval(cx);
1.485 + JS::RootedId nameid(cx);
1.486 + JS::RootedValue propId(cx);
1.487 + JS::RootedValue propValue(cx);
1.488 + JS::RootedValue propAlias(cx);
1.489 + uint8_t propFlags;
1.490 +
1.491 + if(!jsd_IsValueObject(jsdc, jsdval))
1.492 + return nullptr;
1.493 +
1.494 + /* If we already have the prop, then return it */
1.495 + while(nullptr != (jsdprop = jsd_IterateProperties(jsdc, jsdval, &iter)))
1.496 + {
1.497 + JSString* propName = jsd_GetValueString(jsdc, jsdprop->name);
1.498 + if(propName) {
1.499 + int result;
1.500 + if (JS_CompareStrings(cx, propName, name, &result) && !result)
1.501 + return jsdprop;
1.502 + }
1.503 + JSD_DropProperty(jsdc, jsdprop);
1.504 + }
1.505 + /* Not found in property list, look it up explicitly */
1.506 +
1.507 + nameval = STRING_TO_JSVAL(name);
1.508 + if(!JS_ValueToId(cx, nameval, &nameid))
1.509 + return nullptr;
1.510 +
1.511 + if(!(obj = JSVAL_TO_OBJECT(jsdval->val)))
1.512 + return nullptr;
1.513 +
1.514 + JS::Rooted<JSPropertyDescriptor> desc(cx);
1.515 + {
1.516 + JSAutoCompartment ac(cx, obj);
1.517 + JS::RootedId id(cx, nameid);
1.518 +
1.519 + if(!JS_WrapId(cx, &id))
1.520 + return nullptr;
1.521 + if(!JS_GetOwnPropertyDescriptorById(cx, obj, id, &desc))
1.522 + return nullptr;
1.523 + if(!desc.object())
1.524 + return nullptr;
1.525 +
1.526 + JS_ClearPendingException(cx);
1.527 +
1.528 + if(!JS_GetPropertyById(cx, obj, id, &val))
1.529 + {
1.530 + if (JS_IsExceptionPending(cx))
1.531 + {
1.532 + if (!JS_GetPendingException(cx, &propValue))
1.533 + {
1.534 + return nullptr;
1.535 + }
1.536 + propFlags = JSPD_EXCEPTION;
1.537 + }
1.538 + else
1.539 + {
1.540 + propFlags = JSPD_ERROR;
1.541 + propValue = JSVAL_VOID;
1.542 + }
1.543 + }
1.544 + else
1.545 + {
1.546 + propValue = val;
1.547 + }
1.548 + }
1.549 +
1.550 + if (!JS_IdToValue(cx, nameid, &propId))
1.551 + return nullptr;
1.552 +
1.553 + propAlias = JSVAL_NULL;
1.554 + propFlags |= desc.isEnumerable() ? JSPD_ENUMERATE : 0
1.555 + | desc.isReadonly() ? JSPD_READONLY : 0
1.556 + | desc.isPermanent() ? JSPD_PERMANENT : 0;
1.557 +
1.558 + return _newProperty(jsdc, propId, propValue, propAlias, propFlags, JSDPD_HINTED);
1.559 +}
1.560 +
1.561 +/*
1.562 + * Retrieve a JSFunction* from a JSDValue*. This differs from
1.563 + * JS_ValueToFunction by fully unwrapping the object first.
1.564 + */
1.565 +JSFunction*
1.566 +jsd_GetValueFunction(JSDContext* jsdc, JSDValue* jsdval)
1.567 +{
1.568 + AutoSafeJSContext cx;
1.569 +
1.570 + JS::RootedObject obj(cx);
1.571 + JS::RootedFunction fun(cx);
1.572 +
1.573 + if (JSVAL_IS_PRIMITIVE(jsdval->val))
1.574 + return nullptr;
1.575 +
1.576 + obj = js::UncheckedUnwrap(JSVAL_TO_OBJECT(jsdval->val));
1.577 + JSAutoCompartment ac(cx, obj);
1.578 + JS::RootedValue funval(cx, JS::ObjectValue(*obj));
1.579 + fun = JS_ValueToFunction(cx, funval);
1.580 +
1.581 + return fun;
1.582 +}
1.583 +
1.584 +JSDValue*
1.585 +jsd_GetValuePrototype(JSDContext* jsdc, JSDValue* jsdval)
1.586 +{
1.587 + AutoSafeJSContext cx;
1.588 + if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROTO)))
1.589 + {
1.590 + JS::RootedObject obj(cx);
1.591 + JS::RootedObject proto(cx);
1.592 + MOZ_ASSERT(!jsdval->proto);
1.593 + SET_BIT_FLAG(jsdval->flags, GOT_PROTO);
1.594 + if(JSVAL_IS_PRIMITIVE(jsdval->val))
1.595 + return nullptr;
1.596 + obj = JSVAL_TO_OBJECT(jsdval->val);
1.597 + if(!JS_GetPrototype(cx, obj, &proto))
1.598 + return nullptr;
1.599 + if(!proto)
1.600 + return nullptr;
1.601 + jsdval->proto = jsd_NewValue(jsdc, OBJECT_TO_JSVAL(proto));
1.602 + }
1.603 + if(jsdval->proto)
1.604 + jsdval->proto->nref++;
1.605 + return jsdval->proto;
1.606 +}
1.607 +
1.608 +JSDValue*
1.609 +jsd_GetValueParent(JSDContext* jsdc, JSDValue* jsdval)
1.610 +{
1.611 + if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PARENT)))
1.612 + {
1.613 + AutoSafeJSContext cx;
1.614 + JS::RootedObject obj(cx);
1.615 + JS::RootedObject parent(cx);
1.616 + MOZ_ASSERT(!jsdval->parent);
1.617 + SET_BIT_FLAG(jsdval->flags, GOT_PARENT);
1.618 + if(JSVAL_IS_PRIMITIVE(jsdval->val))
1.619 + return nullptr;
1.620 + obj = JSVAL_TO_OBJECT(jsdval->val);
1.621 + {
1.622 + JSAutoCompartment ac(cx, obj);
1.623 + parent = JS_GetParentOrScopeChain(cx, obj);
1.624 + }
1.625 + if(!parent)
1.626 + return nullptr;
1.627 + jsdval->parent = jsd_NewValue(jsdc, OBJECT_TO_JSVAL(parent));
1.628 + }
1.629 + if(jsdval->parent)
1.630 + jsdval->parent->nref++;
1.631 + return jsdval->parent;
1.632 +}
1.633 +
1.634 +JSDValue*
1.635 +jsd_GetValueConstructor(JSDContext* jsdc, JSDValue* jsdval)
1.636 +{
1.637 + if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_CTOR)))
1.638 + {
1.639 + AutoSafeJSContext cx;
1.640 + JS::RootedObject obj(cx);
1.641 + JS::RootedObject proto(cx);
1.642 + JS::RootedObject ctor(cx);
1.643 + MOZ_ASSERT(!jsdval->ctor);
1.644 + SET_BIT_FLAG(jsdval->flags, GOT_CTOR);
1.645 + if(JSVAL_IS_PRIMITIVE(jsdval->val))
1.646 + return nullptr;
1.647 + obj = JSVAL_TO_OBJECT(jsdval->val);
1.648 + if(!JS_GetPrototype(cx, obj, &proto))
1.649 + return nullptr;
1.650 + if(!proto)
1.651 + return nullptr;
1.652 + {
1.653 + JSAutoCompartment ac(cx, obj);
1.654 + ctor = JS_GetConstructor(cx, proto);
1.655 + }
1.656 + if(!ctor)
1.657 + return nullptr;
1.658 + jsdval->ctor = jsd_NewValue(jsdc, OBJECT_TO_JSVAL(ctor));
1.659 + }
1.660 + if(jsdval->ctor)
1.661 + jsdval->ctor->nref++;
1.662 + return jsdval->ctor;
1.663 +}
1.664 +
1.665 +const char*
1.666 +jsd_GetValueClassName(JSDContext* jsdc, JSDValue* jsdval)
1.667 +{
1.668 + jsval val = jsdval->val;
1.669 + if(!jsdval->className && !JSVAL_IS_PRIMITIVE(val))
1.670 + {
1.671 + JS::RootedObject obj(jsdc->jsrt, JSVAL_TO_OBJECT(val));
1.672 + AutoSafeJSContext cx;
1.673 + JSAutoCompartment ac(cx, obj);
1.674 + jsdval->className = JS_GetDebugClassName(obj);
1.675 + }
1.676 + return jsdval->className;
1.677 +}
1.678 +
1.679 +JSDScript*
1.680 +jsd_GetScriptForValue(JSDContext* jsdc, JSDValue* jsdval)
1.681 +{
1.682 + AutoSafeJSContext cx;
1.683 + JS::RootedValue val(cx, jsdval->val);
1.684 + JS::RootedScript script(cx);
1.685 + JSDScript* jsdscript;
1.686 +
1.687 + if (!jsd_IsValueFunction(jsdc, jsdval))
1.688 + return nullptr;
1.689 +
1.690 + {
1.691 + JSAutoCompartment ac(cx, JSVAL_TO_OBJECT(val));
1.692 + AutoSaveExceptionState as(cx);
1.693 + JS::RootedFunction fun(cx, JSD_GetValueFunction(jsdc, jsdval));
1.694 + if (fun)
1.695 + script = JS_GetFunctionScript(cx, fun);
1.696 + }
1.697 +
1.698 + if (!script)
1.699 + return nullptr;
1.700 +
1.701 + JSD_LOCK_SCRIPTS(jsdc);
1.702 + jsdscript = jsd_FindJSDScript(jsdc, script);
1.703 + JSD_UNLOCK_SCRIPTS(jsdc);
1.704 + return jsdscript;
1.705 +}
1.706 +
1.707 +
1.708 +/***************************************************************************/
1.709 +/***************************************************************************/
1.710 +
1.711 +JSDValue*
1.712 +jsd_GetPropertyName(JSDContext* jsdc, JSDProperty* jsdprop)
1.713 +{
1.714 + jsdprop->name->nref++;
1.715 + return jsdprop->name;
1.716 +}
1.717 +
1.718 +JSDValue*
1.719 +jsd_GetPropertyValue(JSDContext* jsdc, JSDProperty* jsdprop)
1.720 +{
1.721 + jsdprop->val->nref++;
1.722 + return jsdprop->val;
1.723 +}
1.724 +
1.725 +JSDValue*
1.726 +jsd_GetPropertyAlias(JSDContext* jsdc, JSDProperty* jsdprop)
1.727 +{
1.728 + if(jsdprop->alias)
1.729 + jsdprop->alias->nref++;
1.730 + return jsdprop->alias;
1.731 +}
1.732 +
1.733 +unsigned
1.734 +jsd_GetPropertyFlags(JSDContext* jsdc, JSDProperty* jsdprop)
1.735 +{
1.736 + return jsdprop->flags;
1.737 +}
1.738 +
1.739 +void
1.740 +jsd_DropProperty(JSDContext* jsdc, JSDProperty* jsdprop)
1.741 +{
1.742 + MOZ_ASSERT(jsdprop->nref > 0);
1.743 + if(0 == --jsdprop->nref)
1.744 + {
1.745 + MOZ_ASSERT(JS_CLIST_IS_EMPTY(&jsdprop->links));
1.746 + DROP_CLEAR_VALUE(jsdc, jsdprop->val);
1.747 + DROP_CLEAR_VALUE(jsdc, jsdprop->name);
1.748 + DROP_CLEAR_VALUE(jsdc, jsdprop->alias);
1.749 + free(jsdprop);
1.750 + }
1.751 +}
