https://github.com/mozilla/gecko-dev
Tip revision: 56a44f24366557e5532147cf28cd14f306f47c46 authored by Mats Palmgren on 31 May 2012, 18:03:59 UTC
Bug 759788: hold a strong ref to the nsPluginInstanceOwner in DoStopPlugin to avoid crashes, r=bsmedberg, a=akeybl
Bug 759788: hold a strong ref to the nsPluginInstanceOwner in DoStopPlugin to avoid crashes, r=bsmedberg, a=akeybl
Tip revision: 56a44f2
jsbool.cpp
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* JS boolean implementation.
*/
#include "jstypes.h"
#include "jsutil.h"
#include "jsapi.h"
#include "jsatom.h"
#include "jsbool.h"
#include "jscntxt.h"
#include "jsinfer.h"
#include "jsversion.h"
#include "jslock.h"
#include "jsnum.h"
#include "jsobj.h"
#include "jsstr.h"
#include "vm/GlobalObject.h"
#include "jsinferinlines.h"
#include "jsobjinlines.h"
#include "vm/BooleanObject-inl.h"
#include "vm/MethodGuard-inl.h"
#include "vm/StringBuffer-inl.h"
using namespace js;
using namespace js::types;
Class js::BooleanClass = {
"Boolean",
JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean), JS_PropertyStub, /* addProperty */
JS_PropertyStub, /* delProperty */
JS_PropertyStub, /* getProperty */
JS_StrictPropertyStub, /* setProperty */
JS_EnumerateStub,
JS_ResolveStub,
JS_ConvertStub
};
#if JS_HAS_TOSOURCE
static JSBool
bool_toSource(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
bool b, ok;
if (!BoxedPrimitiveMethodGuard(cx, args, bool_toSource, &b, &ok))
return ok;
StringBuffer sb(cx);
if (!sb.append("(new Boolean(") || !BooleanToStringBuffer(cx, b, sb) || !sb.append("))"))
return false;
JSString *str = sb.finishString();
if (!str)
return false;
args.rval().setString(str);
return true;
}
#endif
static JSBool
bool_toString(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
bool b, ok;
if (!BoxedPrimitiveMethodGuard<bool>(cx, args, bool_toString, &b, &ok))
return ok;
args.rval().setString(cx->runtime->atomState.booleanAtoms[b ? 1 : 0]);
return true;
}
static JSBool
bool_valueOf(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
bool b, ok;
if (!BoxedPrimitiveMethodGuard(cx, args, bool_valueOf, &b, &ok))
return ok;
args.rval().setBoolean(b);
return true;
}
static JSFunctionSpec boolean_methods[] = {
#if JS_HAS_TOSOURCE
JS_FN(js_toSource_str, bool_toSource, 0, 0),
#endif
JS_FN(js_toString_str, bool_toString, 0, 0),
JS_FN(js_valueOf_str, bool_valueOf, 0, 0),
JS_FS_END
};
static JSBool
Boolean(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
bool b = args.length() != 0 ? js_ValueToBoolean(args[0]) : false;
if (IsConstructing(vp)) {
JSObject *obj = BooleanObject::create(cx, b);
if (!obj)
return false;
args.rval().setObject(*obj);
} else {
args.rval().setBoolean(b);
}
return true;
}
JSObject *
js_InitBooleanClass(JSContext *cx, JSObject *obj)
{
JS_ASSERT(obj->isNative());
GlobalObject *global = &obj->asGlobal();
JSObject *booleanProto = global->createBlankPrototype(cx, &BooleanClass);
if (!booleanProto)
return NULL;
booleanProto->setFixedSlot(BooleanObject::PRIMITIVE_VALUE_SLOT, BooleanValue(false));
JSFunction *ctor = global->createConstructor(cx, Boolean, &BooleanClass,
CLASS_ATOM(cx, Boolean), 1);
if (!ctor)
return NULL;
if (!LinkConstructorAndPrototype(cx, ctor, booleanProto))
return NULL;
if (!DefinePropertiesAndBrand(cx, booleanProto, NULL, boolean_methods))
return NULL;
if (!DefineConstructorAndPrototype(cx, global, JSProto_Boolean, ctor, booleanProto))
return NULL;
return booleanProto;
}
JSString *
js_BooleanToString(JSContext *cx, JSBool b)
{
return cx->runtime->atomState.booleanAtoms[b ? 1 : 0];
}
namespace js {
bool
BooleanGetPrimitiveValueSlow(JSContext *cx, JSObject &obj, Value *vp)
{
JS_ASSERT(ObjectClassIs(obj, ESClass_Boolean, cx));
JS_ASSERT(obj.isProxy());
/*
* To respect the proxy abstraction, we can't simply unwrap and call
* getPrimitiveThis on the wrapped object. All we know is that obj says
* its [[Class]] is "Boolean". Boolean.prototype.valueOf is specified to
* return the [[PrimitiveValue]] internal property, so call that instead.
*/
InvokeArgsGuard ag;
if (!cx->stack.pushInvokeArgs(cx, 0, &ag))
return false;
ag.calleev().setUndefined();
ag.thisv().setObject(obj);
if (!GetProxyHandler(&obj)->nativeCall(cx, &obj, &BooleanClass, bool_valueOf, ag))
return false;
*vp = ag.rval();
return true;
}
} /* namespace js */
JSBool
js_ValueToBoolean(const Value &v)
{
if (v.isInt32())
return v.toInt32() != 0;
if (v.isString())
return v.toString()->length() != 0;
if (v.isObject())
return JS_TRUE;
if (v.isNullOrUndefined())
return JS_FALSE;
if (v.isDouble()) {
double d;
d = v.toDouble();
return !JSDOUBLE_IS_NaN(d) && d != 0;
}
JS_ASSERT(v.isBoolean());
return v.toBoolean();
}