2011-02-17 10:39:05 -08:00
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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2010-08-13 14:22:18 -07:00
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* vim: set ts=4 sw=4 et tw=78:
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2010-03-28 13:34:16 -07:00
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is SpiderMonkey code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jeff Walden <jwalden+code@mit.edu> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef jscntxtinlines_h___
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#define jscntxtinlines_h___
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#include "jscntxt.h"
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2010-12-22 12:02:25 -08:00
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#include "jscompartment.h"
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2010-06-16 14:13:28 -07:00
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#include "jsstaticcheck.h"
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2010-03-28 13:34:16 -07:00
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#include "jsxml.h"
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2010-09-13 15:53:50 -07:00
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#include "jsregexp.h"
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2010-09-27 13:49:09 -07:00
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#include "jsgc.h"
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2010-09-13 15:53:50 -07:00
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2011-06-24 14:22:30 -07:00
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#include "frontend/ParseMaps.h"
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2011-02-19 20:46:44 -08:00
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namespace js {
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2010-10-27 16:18:16 -07:00
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2011-04-18 13:50:47 -07:00
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static inline GlobalObject *
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2011-02-19 20:46:44 -08:00
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GetGlobalForScopeChain(JSContext *cx)
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2010-09-13 15:53:50 -07:00
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{
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2011-02-19 20:46:44 -08:00
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/*
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* This is essentially GetScopeChain(cx)->getGlobal(), but without
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* falling off trace.
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*
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* This use of cx->fp, possibly on trace, is deliberate:
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* cx->fp->scopeChain->getGlobal() returns the same object whether we're on
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* trace or not, since we do not trace calls across global objects.
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*/
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VOUCH_DOES_NOT_REQUIRE_STACK();
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2010-10-27 16:18:16 -07:00
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2011-05-24 16:08:40 -07:00
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if (cx->hasfp())
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2011-02-19 20:46:44 -08:00
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return cx->fp()->scopeChain().getGlobal();
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2010-10-27 16:18:16 -07:00
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2011-02-19 20:46:44 -08:00
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JSObject *scope = cx->globalObject;
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2011-07-13 16:47:10 -07:00
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if (!NULLABLE_OBJ_TO_INNER_OBJECT(cx, scope))
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2011-02-19 20:46:44 -08:00
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return NULL;
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return scope->asGlobal();
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2011-02-19 20:46:44 -08:00
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}
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2010-10-27 16:18:16 -07:00
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2011-03-13 07:45:02 -07:00
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inline GSNCache *
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GetGSNCache(JSContext *cx)
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{
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return &JS_THREAD_DATA(cx)->gsnCache;
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}
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2010-06-19 11:58:00 -07:00
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class AutoNamespaceArray : protected AutoGCRooter {
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public:
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AutoNamespaceArray(JSContext *cx) : AutoGCRooter(cx, NAMESPACES) {
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array.init();
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2010-03-28 13:34:16 -07:00
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}
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2010-06-19 11:58:00 -07:00
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~AutoNamespaceArray() {
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array.finish(context);
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}
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uint32 length() const { return array.length; }
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2010-03-28 13:34:16 -07:00
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public:
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friend void AutoGCRooter::trace(JSTracer *trc);
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2010-03-28 13:34:16 -07:00
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JSXMLArray array;
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};
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2010-11-08 18:05:54 -08:00
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#ifdef DEBUG
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2010-06-16 14:13:28 -07:00
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class CompartmentChecker
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{
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private:
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JSContext *context;
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JSCompartment *compartment;
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public:
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explicit CompartmentChecker(JSContext *cx) : context(cx), compartment(cx->compartment) {
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2011-05-24 16:08:40 -07:00
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check(cx->hasfp() ? JS_GetGlobalForScopeChain(cx) : cx->globalObject);
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2010-06-16 14:13:28 -07:00
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VOUCH_DOES_NOT_REQUIRE_STACK();
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}
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/*
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* Set a breakpoint here (break js::CompartmentChecker::fail) to debug
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* compartment mismatches.
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*/
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static void fail(JSCompartment *c1, JSCompartment *c2) {
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printf("*** Compartment mismatch %p vs. %p\n", (void *) c1, (void *) c2);
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2010-11-08 18:05:54 -08:00
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JS_NOT_REACHED("compartment mismatched");
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2010-06-16 14:13:28 -07:00
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}
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2011-01-05 18:44:30 -08:00
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/* Note: should only be used when neither c1 nor c2 may be the default compartment. */
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static void check(JSCompartment *c1, JSCompartment *c2) {
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2011-01-13 14:42:36 -08:00
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JS_ASSERT(c1 != c1->rt->atomsCompartment);
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JS_ASSERT(c2 != c2->rt->atomsCompartment);
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2011-01-05 18:44:30 -08:00
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if (c1 != c2)
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fail(c1, c2);
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}
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2010-06-16 14:13:28 -07:00
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void check(JSCompartment *c) {
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2011-01-13 14:42:36 -08:00
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if (c && c != context->runtime->atomsCompartment) {
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2010-06-16 14:13:28 -07:00
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if (!compartment)
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compartment = c;
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else if (c != compartment)
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fail(compartment, c);
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}
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}
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void check(JSPrincipals *) { /* nothing for now */ }
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void check(JSObject *obj) {
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if (obj)
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2011-01-24 16:30:08 -08:00
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check(obj->compartment());
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}
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void check(JSString *str) {
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2011-03-14 13:55:55 -07:00
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if (!str->isAtom())
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2011-03-14 13:59:53 -07:00
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check(str->compartment());
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2010-06-16 14:13:28 -07:00
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}
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2010-07-14 23:19:36 -07:00
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void check(const js::Value &v) {
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if (v.isObject())
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check(&v.toObject());
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2011-01-24 16:30:08 -08:00
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else if (v.isString())
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check(v.toString());
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2010-07-14 23:19:36 -07:00
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}
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2010-06-16 14:13:28 -07:00
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void check(jsval v) {
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2010-07-14 23:19:36 -07:00
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check(Valueify(v));
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2010-06-16 14:13:28 -07:00
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}
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void check(const ValueArray &arr) {
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for (size_t i = 0; i < arr.length; i++)
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check(arr.array[i]);
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}
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2010-07-14 23:19:36 -07:00
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void check(const JSValueArray &arr) {
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for (size_t i = 0; i < arr.length; i++)
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check(arr.array[i]);
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}
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2011-05-24 16:04:18 -07:00
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void check(const CallArgs &args) {
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for (Value *p = args.base(); p != args.end(); ++p)
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check(*p);
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}
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2010-07-14 23:19:36 -07:00
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void check(jsid id) {
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if (JSID_IS_OBJECT(id))
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check(JSID_TO_OBJECT(id));
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}
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2010-06-16 14:13:28 -07:00
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void check(JSIdArray *ida) {
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if (ida) {
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2010-07-14 23:19:36 -07:00
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for (jsint i = 0; i < ida->length; i++) {
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if (JSID_IS_OBJECT(ida->vector[i]))
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check(ida->vector[i]);
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}
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2010-06-16 14:13:28 -07:00
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}
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}
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void check(JSScript *script) {
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2010-11-16 15:30:56 -08:00
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if (script) {
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2010-09-29 23:17:29 -07:00
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check(script->compartment);
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if (script->u.object)
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check(script->u.object);
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}
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2010-06-16 14:13:28 -07:00
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}
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2011-04-13 09:27:37 -07:00
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void check(StackFrame *fp) {
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2010-10-26 19:48:51 -07:00
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check(&fp->scopeChain());
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}
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2010-06-16 14:13:28 -07:00
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};
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2010-11-08 18:05:54 -08:00
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#endif
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2010-06-16 14:13:28 -07:00
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/*
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* Don't perform these checks when called from a finalizer. The checking
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* depends on other objects not having been swept yet.
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*/
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#define START_ASSERT_SAME_COMPARTMENT() \
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if (cx->runtime->gcRunning) \
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return; \
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CompartmentChecker c(cx)
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template <class T1> inline void
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assertSameCompartment(JSContext *cx, T1 t1)
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{
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2010-11-08 18:05:54 -08:00
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#ifdef DEBUG
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2010-06-16 14:13:28 -07:00
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START_ASSERT_SAME_COMPARTMENT();
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c.check(t1);
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2010-11-08 18:05:54 -08:00
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#endif
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2010-06-16 14:13:28 -07:00
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}
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template <class T1, class T2> inline void
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assertSameCompartment(JSContext *cx, T1 t1, T2 t2)
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{
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2010-11-08 18:05:54 -08:00
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#ifdef DEBUG
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2010-06-16 14:13:28 -07:00
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START_ASSERT_SAME_COMPARTMENT();
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c.check(t1);
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c.check(t2);
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2010-11-08 18:05:54 -08:00
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#endif
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2010-06-16 14:13:28 -07:00
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}
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template <class T1, class T2, class T3> inline void
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assertSameCompartment(JSContext *cx, T1 t1, T2 t2, T3 t3)
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{
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2010-11-08 18:05:54 -08:00
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#ifdef DEBUG
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2010-06-16 14:13:28 -07:00
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START_ASSERT_SAME_COMPARTMENT();
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c.check(t1);
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c.check(t2);
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c.check(t3);
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2010-11-08 18:05:54 -08:00
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#endif
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2010-06-16 14:13:28 -07:00
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}
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template <class T1, class T2, class T3, class T4> inline void
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assertSameCompartment(JSContext *cx, T1 t1, T2 t2, T3 t3, T4 t4)
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{
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2010-11-08 18:05:54 -08:00
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#ifdef DEBUG
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2010-06-16 14:13:28 -07:00
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START_ASSERT_SAME_COMPARTMENT();
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c.check(t1);
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c.check(t2);
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c.check(t3);
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c.check(t4);
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2010-11-08 18:05:54 -08:00
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#endif
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2010-06-16 14:13:28 -07:00
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}
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template <class T1, class T2, class T3, class T4, class T5> inline void
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assertSameCompartment(JSContext *cx, T1 t1, T2 t2, T3 t3, T4 t4, T5 t5)
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{
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2010-11-08 18:05:54 -08:00
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#ifdef DEBUG
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2010-06-16 14:13:28 -07:00
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START_ASSERT_SAME_COMPARTMENT();
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c.check(t1);
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c.check(t2);
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c.check(t3);
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c.check(t4);
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c.check(t5);
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2010-11-08 18:05:54 -08:00
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#endif
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2010-06-16 14:13:28 -07:00
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}
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#undef START_ASSERT_SAME_COMPARTMENT
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2011-05-24 16:04:18 -07:00
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STATIC_PRECONDITION_ASSUME(ubound(args.argv_) >= argc)
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2010-08-16 12:35:04 -07:00
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JS_ALWAYS_INLINE bool
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2011-05-24 16:04:18 -07:00
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CallJSNative(JSContext *cx, js::Native native, const CallArgs &args)
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2010-06-16 14:13:28 -07:00
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{
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2010-08-16 12:35:04 -07:00
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#ifdef DEBUG
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2011-01-07 02:03:14 -08:00
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JSBool alreadyThrowing = cx->isExceptionPending();
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2010-08-16 12:35:04 -07:00
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#endif
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2011-05-24 16:04:18 -07:00
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assertSameCompartment(cx, args);
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JSBool ok = native(cx, args.argc(), args.base());
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2010-08-16 12:35:04 -07:00
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if (ok) {
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2011-05-24 16:04:18 -07:00
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assertSameCompartment(cx, args.rval());
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2011-01-07 02:03:14 -08:00
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JS_ASSERT_IF(!alreadyThrowing, !cx->isExceptionPending());
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2010-08-16 12:35:04 -07:00
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}
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2010-06-16 14:13:28 -07:00
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return ok;
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}
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2011-02-09 18:17:34 -08:00
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extern JSBool CallOrConstructBoundFunction(JSContext *, uintN, js::Value *);
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2011-05-24 16:04:18 -07:00
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STATIC_PRECONDITION(ubound(args.argv_) >= argc)
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2010-08-16 12:35:04 -07:00
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JS_ALWAYS_INLINE bool
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2011-05-24 16:04:18 -07:00
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CallJSNativeConstructor(JSContext *cx, js::Native native, const CallArgs &args)
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2010-08-16 12:35:04 -07:00
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{
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#ifdef DEBUG
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2011-05-24 16:04:18 -07:00
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JSObject &callee = args.callee();
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2010-08-16 12:35:04 -07:00
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#endif
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2011-05-24 16:04:18 -07:00
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JS_ASSERT(args.thisv().isMagic());
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if (!CallJSNative(cx, native, args))
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2010-08-16 12:35:04 -07:00
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return false;
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2010-09-08 22:20:45 -07:00
|
|
|
/*
|
|
|
|
* Native constructors must return non-primitive values on success.
|
|
|
|
* Although it is legal, if a constructor returns the callee, there is a
|
|
|
|
* 99.9999% chance it is a bug. If any valid code actually wants the
|
2010-09-24 12:54:13 -07:00
|
|
|
* constructor to return the callee, the assertion can be removed or
|
|
|
|
* (another) conjunct can be added to the antecedent.
|
2010-09-08 22:20:45 -07:00
|
|
|
*
|
|
|
|
* Proxies are exceptions to both rules: they can return primitives and
|
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|
|
* they allow content to return the callee.
|
2010-09-24 12:54:13 -07:00
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|
|
*
|
2011-02-09 18:17:34 -08:00
|
|
|
* CallOrConstructBoundFunction is an exception as well because we
|
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|
|
* might have used bind on a proxy function.
|
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|
|
*
|
2010-09-24 12:54:13 -07:00
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|
* (new Object(Object)) returns the callee.
|
2010-08-16 12:35:04 -07:00
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|
|
*/
|
2010-09-08 22:20:45 -07:00
|
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extern JSBool proxy_Construct(JSContext *, uintN, Value *);
|
2011-06-17 16:51:52 -07:00
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|
extern JSBool callable_Construct(JSContext *, uintN, Value *);
|
|
|
|
JS_ASSERT_IF(native != proxy_Construct &&
|
|
|
|
native != callable_Construct &&
|
|
|
|
native != js::CallOrConstructBoundFunction &&
|
2011-05-24 16:04:18 -07:00
|
|
|
(!callee.isFunction() || callee.getFunctionPrivate()->u.n.clasp != &js_ObjectClass),
|
|
|
|
!args.rval().isPrimitive() && callee != args.rval().toObject());
|
2010-09-08 22:20:45 -07:00
|
|
|
|
2010-08-16 12:35:04 -07:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
JS_ALWAYS_INLINE bool
|
2011-04-10 17:49:59 -07:00
|
|
|
CallJSPropertyOp(JSContext *cx, js::PropertyOp op, JSObject *receiver, jsid id, js::Value *vp)
|
2010-06-16 14:13:28 -07:00
|
|
|
{
|
2011-04-10 17:49:59 -07:00
|
|
|
assertSameCompartment(cx, receiver, id, *vp);
|
|
|
|
JSBool ok = op(cx, receiver, id, vp);
|
2010-06-16 14:13:28 -07:00
|
|
|
if (ok)
|
2011-04-10 17:49:59 -07:00
|
|
|
assertSameCompartment(cx, receiver, *vp);
|
2010-06-16 14:13:28 -07:00
|
|
|
return ok;
|
|
|
|
}
|
|
|
|
|
2010-08-16 12:35:04 -07:00
|
|
|
JS_ALWAYS_INLINE bool
|
2011-02-09 11:31:40 -08:00
|
|
|
CallJSPropertyOpSetter(JSContext *cx, js::StrictPropertyOp op, JSObject *obj, jsid id,
|
|
|
|
JSBool strict, js::Value *vp)
|
2010-06-16 14:13:28 -07:00
|
|
|
{
|
2010-07-14 23:19:36 -07:00
|
|
|
assertSameCompartment(cx, obj, id, *vp);
|
2011-02-09 11:31:40 -08:00
|
|
|
return op(cx, obj, id, strict, vp);
|
2010-06-16 14:13:28 -07:00
|
|
|
}
|
|
|
|
|
2010-10-29 10:42:35 -07:00
|
|
|
inline bool
|
2011-02-09 11:31:40 -08:00
|
|
|
CallSetter(JSContext *cx, JSObject *obj, jsid id, js::StrictPropertyOp op, uintN attrs,
|
|
|
|
uintN shortid, JSBool strict, js::Value *vp)
|
2010-10-29 10:42:35 -07:00
|
|
|
{
|
|
|
|
if (attrs & JSPROP_SETTER)
|
|
|
|
return ExternalGetOrSet(cx, obj, id, CastAsObjectJsval(op), JSACC_WRITE, 1, vp, vp);
|
|
|
|
|
|
|
|
if (attrs & JSPROP_GETTER)
|
|
|
|
return js_ReportGetterOnlyAssignment(cx);
|
|
|
|
|
|
|
|
if (attrs & JSPROP_SHORTID)
|
|
|
|
id = INT_TO_JSID(shortid);
|
2011-02-09 11:31:40 -08:00
|
|
|
return CallJSPropertyOpSetter(cx, op, obj, id, strict, vp);
|
2010-10-29 10:42:35 -07:00
|
|
|
}
|
|
|
|
|
2010-12-22 12:02:25 -08:00
|
|
|
#ifdef JS_TRACER
|
|
|
|
/*
|
|
|
|
* Reconstruct the JS stack and clear cx->tracecx. We must be currently in a
|
|
|
|
* _FAIL builtin from trace on cx or another context on the same thread. The
|
|
|
|
* machine code for the trace remains on the C stack when js_DeepBail returns.
|
|
|
|
*
|
|
|
|
* Implemented in jstracer.cpp.
|
|
|
|
*/
|
|
|
|
JS_FORCES_STACK JS_FRIEND_API(void)
|
|
|
|
DeepBail(JSContext *cx);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static JS_INLINE void
|
|
|
|
LeaveTraceIfGlobalObject(JSContext *cx, JSObject *obj)
|
|
|
|
{
|
|
|
|
if (!obj->parent)
|
|
|
|
LeaveTrace(cx);
|
|
|
|
}
|
|
|
|
|
2011-01-05 15:47:46 -08:00
|
|
|
static JS_INLINE void
|
|
|
|
LeaveTraceIfArgumentsObject(JSContext *cx, JSObject *obj)
|
|
|
|
{
|
|
|
|
if (obj->isArguments())
|
|
|
|
LeaveTrace(cx);
|
|
|
|
}
|
|
|
|
|
2010-07-14 23:19:36 -07:00
|
|
|
} /* namespace js */
|
2010-03-28 13:34:16 -07:00
|
|
|
|
2011-04-13 09:27:37 -07:00
|
|
|
#ifdef JS_METHODJIT
|
|
|
|
inline js::mjit::JaegerCompartment *JSContext::jaegerCompartment()
|
|
|
|
{
|
2011-06-21 16:16:23 -07:00
|
|
|
return compartment->jaegerCompartment();
|
2011-04-13 09:27:37 -07:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
inline bool
|
|
|
|
JSContext::ensureGeneratorStackSpace()
|
|
|
|
{
|
|
|
|
bool ok = genStack.reserve(genStack.length() + 1);
|
|
|
|
if (!ok)
|
|
|
|
js_ReportOutOfMemory(this);
|
|
|
|
return ok;
|
|
|
|
}
|
|
|
|
|
|
|
|
inline js::RegExpStatics *
|
|
|
|
JSContext::regExpStatics()
|
|
|
|
{
|
|
|
|
return js::RegExpStatics::extractFrom(js::GetGlobalForScopeChain(this));
|
|
|
|
}
|
|
|
|
|
2011-01-07 02:03:14 -08:00
|
|
|
inline void
|
|
|
|
JSContext::setPendingException(js::Value v) {
|
|
|
|
this->throwing = true;
|
|
|
|
this->exception = v;
|
|
|
|
assertSameCompartment(this, v);
|
|
|
|
}
|
|
|
|
|
2011-06-24 14:22:30 -07:00
|
|
|
inline bool
|
|
|
|
JSContext::ensureParseMapPool()
|
|
|
|
{
|
|
|
|
if (parseMapPool_)
|
|
|
|
return true;
|
|
|
|
parseMapPool_ = js::OffTheBooks::new_<js::ParseMapPool>(this);
|
|
|
|
return parseMapPool_;
|
|
|
|
}
|
|
|
|
|
2010-03-28 13:34:16 -07:00
|
|
|
#endif /* jscntxtinlines_h___ */
|