https://github.com/mozilla/gecko-dev
Tip revision: c56f2c2402f6ff41fa3d3b5c019dcbd6a4be97ea authored by ffxbld on 29 January 2012, 09:49:10 UTC
Added tag FIREFOX_10_0_BUILD1 for changeset baefae4b6685. CLOSED TREE a=release
Added tag FIREFOX_10_0_BUILD1 for changeset baefae4b6685. CLOSED TREE a=release
Tip revision: c56f2c2
jsobjinlines.h
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=99:
*
* ***** 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 ***** */
#ifndef jsobjinlines_h___
#define jsobjinlines_h___
#include <new>
#include "jsarray.h"
#include "jsdate.h"
#include "jsfun.h"
#include "jsiter.h"
#include "jslock.h"
#include "jsobj.h"
#include "jsprobes.h"
#include "jspropertytree.h"
#include "jsproxy.h"
#include "jsscope.h"
#include "jstypedarray.h"
#include "jsxml.h"
#include "jswrapper.h"
/* Headers included for inline implementations used by this header. */
#include "jsbool.h"
#include "jscntxt.h"
#include "jsnum.h"
#include "jsinferinlines.h"
#include "jsscopeinlines.h"
#include "jsscriptinlines.h"
#include "jsstr.h"
#include "vm/GlobalObject.h"
#include "jsatominlines.h"
#include "jsfuninlines.h"
#include "jsgcinlines.h"
#include "jsscopeinlines.h"
inline bool
JSObject::preventExtensions(JSContext *cx, js::AutoIdVector *props)
{
JS_ASSERT(isExtensible());
if (js::FixOp fix = getOps()->fix) {
bool success;
if (!fix(cx, this, &success, props))
return false;
if (!success) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CANT_CHANGE_EXTENSIBILITY);
return false;
}
} else {
if (!js::GetPropertyNames(cx, this, JSITER_HIDDEN | JSITER_OWNONLY, props))
return false;
}
if (isNative())
extensibleShapeChange(cx);
flags |= NOT_EXTENSIBLE;
return true;
}
inline bool
JSObject::brand(JSContext *cx)
{
JS_ASSERT(!generic());
JS_ASSERT(!branded());
JS_ASSERT(isNative());
JS_ASSERT(!cx->typeInferenceEnabled());
generateOwnShape(cx);
if (js_IsPropertyCacheDisabled(cx)) // check for rt->shapeGen overflow
return false;
flags |= BRANDED;
return true;
}
inline bool
JSObject::unbrand(JSContext *cx)
{
JS_ASSERT(isNative());
if (branded()) {
generateOwnShape(cx);
if (js_IsPropertyCacheDisabled(cx)) // check for rt->shapeGen overflow
return false;
flags &= ~BRANDED;
}
setGeneric();
return true;
}
inline JSBool
JSObject::setGeneric(JSContext *cx, jsid id, js::Value *vp, JSBool strict)
{
if (getOps()->setGeneric)
return nonNativeSetProperty(cx, id, vp, strict);
return js_SetPropertyHelper(cx, this, id, 0, vp, strict);
}
inline JSBool
JSObject::setProperty(JSContext *cx, js::PropertyName *name, js::Value *vp, JSBool strict)
{
return setGeneric(cx, ATOM_TO_JSID(name), vp, strict);
}
inline JSBool
JSObject::setElement(JSContext *cx, uint32 index, js::Value *vp, JSBool strict)
{
if (getOps()->setElement)
return nonNativeSetElement(cx, index, vp, strict);
return js_SetElementHelper(cx, this, index, 0, vp, strict);
}
inline JSBool
JSObject::setSpecial(JSContext *cx, js::SpecialId sid, js::Value *vp, JSBool strict)
{
return setGeneric(cx, SPECIALID_TO_JSID(sid), vp, strict);
}
inline JSBool
JSObject::setGenericAttributes(JSContext *cx, jsid id, uintN *attrsp)
{
js::types::MarkTypePropertyConfigured(cx, this, id);
js::GenericAttributesOp op = getOps()->setGenericAttributes;
return (op ? op : js_SetAttributes)(cx, this, id, attrsp);
}
inline JSBool
JSObject::setPropertyAttributes(JSContext *cx, js::PropertyName *name, uintN *attrsp)
{
return setGenericAttributes(cx, ATOM_TO_JSID(name), attrsp);
}
inline JSBool
JSObject::setElementAttributes(JSContext *cx, uint32 index, uintN *attrsp)
{
js::ElementAttributesOp op = getOps()->setElementAttributes;
return (op ? op : js_SetElementAttributes)(cx, this, index, attrsp);
}
inline JSBool
JSObject::setSpecialAttributes(JSContext *cx, js::SpecialId sid, uintN *attrsp)
{
return setGenericAttributes(cx, SPECIALID_TO_JSID(sid), attrsp);
}
inline JSBool
JSObject::getGeneric(JSContext *cx, JSObject *receiver, jsid id, js::Value *vp)
{
js::GenericIdOp op = getOps()->getGeneric;
if (op) {
if (!op(cx, this, receiver, id, vp))
return false;
} else {
if (!js_GetProperty(cx, this, receiver, id, vp))
return false;
}
return true;
}
inline JSBool
JSObject::getProperty(JSContext *cx, JSObject *receiver, js::PropertyName *name, js::Value *vp)
{
return getGeneric(cx, receiver, ATOM_TO_JSID(name), vp);
}
inline JSBool
JSObject::getGeneric(JSContext *cx, jsid id, js::Value *vp)
{
return getGeneric(cx, this, id, vp);
}
inline JSBool
JSObject::getProperty(JSContext *cx, js::PropertyName *name, js::Value *vp)
{
return getGeneric(cx, ATOM_TO_JSID(name), vp);
}
inline JSBool
JSObject::deleteGeneric(JSContext *cx, jsid id, js::Value *rval, JSBool strict)
{
js::types::AddTypePropertyId(cx, this, id,
js::types::Type::UndefinedType());
js::types::MarkTypePropertyConfigured(cx, this, id);
js::DeleteGenericOp op = getOps()->deleteGeneric;
return (op ? op : js_DeleteProperty)(cx, this, id, rval, strict);
}
inline JSBool
JSObject::deleteProperty(JSContext *cx, js::PropertyName *name, js::Value *rval, JSBool strict)
{
return deleteGeneric(cx, ATOM_TO_JSID(name), rval, strict);
}
inline JSBool
JSObject::deleteElement(JSContext *cx, uint32 index, js::Value *rval, JSBool strict)
{
jsid id;
if (!js::IndexToId(cx, index, &id))
return false;
return deleteGeneric(cx, id, rval, strict);
}
inline JSBool
JSObject::deleteSpecial(JSContext *cx, js::SpecialId sid, js::Value *rval, JSBool strict)
{
return deleteGeneric(cx, SPECIALID_TO_JSID(sid), rval, strict);
}
inline void
JSObject::syncSpecialEquality()
{
if (getClass()->ext.equality) {
flags |= JSObject::HAS_EQUALITY;
JS_ASSERT_IF(!hasLazyType(), type()->hasAnyFlags(js::types::OBJECT_FLAG_SPECIAL_EQUALITY));
}
}
inline void
JSObject::finalize(JSContext *cx)
{
/* Cope with stillborn objects that have no map. */
if (isNewborn())
return;
js::Probes::finalizeObject(this);
/* Finalize obj first, in case it needs map and slots. */
js::Class *clasp = getClass();
if (clasp->finalize)
clasp->finalize(cx, this);
finish(cx);
}
/*
* Initializer for Call objects for functions and eval frames. Set class,
* parent, map, and shape, and allocate slots.
*/
inline void
JSObject::initCall(JSContext *cx, const js::Bindings &bindings, JSObject *parent)
{
init(cx, &js::CallClass, &js::types::emptyTypeObject, parent, NULL, false);
lastProp = bindings.lastShape();
/*
* If |bindings| is for a function that has extensible parents, that means
* its Call should have its own shape; see js::Bindings::extensibleParents.
*/
if (bindings.extensibleParents())
setOwnShape(js_GenerateShape(cx));
else
objShape = lastProp->shapeid;
}
/*
* Initializer for cloned block objects. Set class, prototype, frame, map, and
* shape.
*/
inline void
JSObject::initClonedBlock(JSContext *cx, js::types::TypeObject *type, js::StackFrame *frame)
{
init(cx, &js::BlockClass, type, NULL, frame, false);
/* Cloned blocks copy their prototype's map; it had better be shareable. */
JS_ASSERT(!getProto()->inDictionaryMode() || getProto()->lastProp->frozen());
lastProp = getProto()->lastProp;
/*
* If the prototype has its own shape, that means the clone should, too; see
* js::Bindings::extensibleParents.
*/
if (getProto()->hasOwnShape())
setOwnShape(js_GenerateShape(cx));
else
objShape = lastProp->shapeid;
}
/*
* Mark a compile-time block as OWN_SHAPE, indicating that its run-time clones
* also need unique shapes. See js::Bindings::extensibleParents.
*/
inline void
JSObject::setBlockOwnShape(JSContext *cx) {
JS_ASSERT(isStaticBlock());
setOwnShape(js_GenerateShape(cx));
}
/*
* Property read barrier for deferred cloning of compiler-created function
* objects optimized as typically non-escaping, ad-hoc methods in obj.
*/
inline const js::Shape *
JSObject::methodReadBarrier(JSContext *cx, const js::Shape &shape, js::Value *vp)
{
JS_ASSERT(canHaveMethodBarrier());
JS_ASSERT(hasMethodBarrier());
JS_ASSERT(nativeContains(cx, shape));
JS_ASSERT(shape.isMethod());
JS_ASSERT(shape.methodObject() == vp->toObject());
JS_ASSERT(shape.writable());
JS_ASSERT(shape.slot != SHAPE_INVALID_SLOT);
JS_ASSERT(shape.hasDefaultSetter());
JS_ASSERT(!isGlobal()); /* i.e. we are not changing the global shape */
JSObject *funobj = &vp->toObject();
JSFunction *fun = funobj->getFunctionPrivate();
JS_ASSERT(fun == funobj);
JS_ASSERT(fun->isNullClosure());
funobj = CloneFunctionObject(cx, fun);
if (!funobj)
return NULL;
funobj->setMethodObj(*this);
/*
* Replace the method property with an ordinary data property. This is
* equivalent to this->setProperty(cx, shape.id, vp) except that any
* watchpoint on the property is not triggered.
*/
uint32 slot = shape.slot;
const js::Shape *newshape = methodShapeChange(cx, shape);
if (!newshape)
return NULL;
JS_ASSERT(!newshape->isMethod());
JS_ASSERT(newshape->slot == slot);
vp->setObject(*funobj);
nativeSetSlot(slot, *vp);
return newshape;
}
static JS_ALWAYS_INLINE bool
ChangesMethodValue(const js::Value &prev, const js::Value &v)
{
JSObject *prevObj;
return prev.isObject() && (prevObj = &prev.toObject())->isFunction() &&
(!v.isObject() || &v.toObject() != prevObj);
}
inline const js::Shape *
JSObject::methodWriteBarrier(JSContext *cx, const js::Shape &shape, const js::Value &v)
{
if (brandedOrHasMethodBarrier() && shape.slot != SHAPE_INVALID_SLOT) {
const js::Value &prev = nativeGetSlot(shape.slot);
if (ChangesMethodValue(prev, v))
return methodShapeChange(cx, shape);
}
return &shape;
}
inline bool
JSObject::methodWriteBarrier(JSContext *cx, uint32 slot, const js::Value &v)
{
if (brandedOrHasMethodBarrier()) {
const js::Value &prev = nativeGetSlot(slot);
if (ChangesMethodValue(prev, v))
return methodShapeChange(cx, slot);
}
return true;
}
inline const js::Value *
JSObject::getRawSlots()
{
JS_ASSERT(isGlobal());
return slots;
}
inline const js::Value *
JSObject::getRawSlot(size_t slot, const js::Value *slots)
{
JS_ASSERT(isGlobal());
size_t fixed = numFixedSlots();
if (slot < fixed)
return fixedSlots() + slot;
return slots + slot - fixed;
}
inline bool
JSObject::isFixedSlot(size_t slot)
{
JS_ASSERT(!isDenseArray());
return slot < numFixedSlots();
}
inline size_t
JSObject::numDynamicSlots(size_t capacity) const
{
JS_ASSERT(capacity >= numFixedSlots());
return isDenseArray() ? capacity : capacity - numFixedSlots();
}
inline size_t
JSObject::dynamicSlotIndex(size_t slot)
{
JS_ASSERT(!isDenseArray() && slot >= numFixedSlots());
return slot - numFixedSlots();
}
inline bool
JSObject::ensureClassReservedSlots(JSContext *cx)
{
return !nativeEmpty() || ensureClassReservedSlotsForEmptyObject(cx);
}
inline js::Value
JSObject::getReservedSlot(uintN index) const
{
return (index < numSlots()) ? getSlot(index) : js::UndefinedValue();
}
inline void
JSObject::setReservedSlot(uintN index, const js::Value &v)
{
JS_ASSERT(index < JSSLOT_FREE(getClass()));
setSlot(index, v);
}
inline bool
JSObject::canHaveMethodBarrier() const
{
return isObject() || isFunction() || isPrimitive() || isDate();
}
inline const js::Value &
JSObject::getPrimitiveThis() const
{
JS_ASSERT(isPrimitive());
return getFixedSlot(JSSLOT_PRIMITIVE_THIS);
}
inline void
JSObject::setPrimitiveThis(const js::Value &pthis)
{
JS_ASSERT(isPrimitive());
setFixedSlot(JSSLOT_PRIMITIVE_THIS, pthis);
}
inline bool
JSObject::hasSlotsArray() const
{
JS_ASSERT_IF(!slots, !isDenseArray());
JS_ASSERT_IF(slots == fixedSlots(), isDenseArray() || isArrayBuffer());
return slots && slots != fixedSlots();
}
inline bool
JSObject::hasContiguousSlots(size_t start, size_t count) const
{
/*
* Check that the range [start, start+count) is either all inline or all
* out of line.
*/
JS_ASSERT(start + count <= numSlots());
return (start + count <= numFixedSlots()) || (start >= numFixedSlots());
}
inline size_t
JSObject::structSize() const
{
return (isFunction() && !getPrivate())
? sizeof(JSFunction)
: (sizeof(JSObject) + sizeof(js::Value) * numFixedSlots());
}
inline size_t
JSObject::slotsAndStructSize() const
{
int ndslots = 0;
if (isDenseArray()) {
if (!denseArrayHasInlineSlots())
ndslots = numSlots();
} else {
if (slots)
ndslots = numSlots() - numFixedSlots();
}
return structSize() + sizeof(js::Value) * ndslots;
}
inline uint32
JSObject::getArrayLength() const
{
JS_ASSERT(isArray());
return (uint32)(uintptr_t) getPrivate();
}
inline void
JSObject::setArrayLength(JSContext *cx, uint32 length)
{
JS_ASSERT(isArray());
if (length > INT32_MAX) {
/*
* Mark the type of this object as possibly not a dense array, per the
* requirements of OBJECT_FLAG_NON_DENSE_ARRAY.
*/
js::types::MarkTypeObjectFlags(cx, this,
js::types::OBJECT_FLAG_NON_PACKED_ARRAY |
js::types::OBJECT_FLAG_NON_DENSE_ARRAY);
jsid lengthId = ATOM_TO_JSID(cx->runtime->atomState.lengthAtom);
js::types::AddTypePropertyId(cx, this, lengthId,
js::types::Type::DoubleType());
}
setPrivate((void*)(uintptr_t) length);
}
inline void
JSObject::setDenseArrayLength(uint32 length)
{
/* Variant of setArrayLength for use on dense arrays where the length cannot overflow int32. */
JS_ASSERT(isDenseArray());
JS_ASSERT(length <= INT32_MAX);
setPrivate((void*)(uintptr_t) length);
}
inline uint32
JSObject::getDenseArrayCapacity()
{
JS_ASSERT(isDenseArray());
return numSlots();
}
inline const js::Value *
JSObject::getDenseArrayElements()
{
JS_ASSERT(isDenseArray());
return slots;
}
inline const js::Value &
JSObject::getDenseArrayElement(uintN idx)
{
JS_ASSERT(isDenseArray() && idx < getDenseArrayInitializedLength());
return slots[idx];
}
inline void
JSObject::setDenseArrayElement(uintN idx, const js::Value &val)
{
JS_ASSERT(isDenseArray() && idx < getDenseArrayInitializedLength());
slots[idx] = val;
}
inline void
JSObject::setDenseArrayElementWithType(JSContext *cx, uintN idx, const js::Value &val)
{
js::types::AddTypePropertyId(cx, this, JSID_VOID, val);
setDenseArrayElement(idx, val);
}
inline void
JSObject::copyDenseArrayElements(uintN dstStart, const js::Value *src, uintN count)
{
JS_ASSERT(isDenseArray());
JS_ASSERT(dstStart + count <= capacity);
memcpy(slots + dstStart, src, count * sizeof(js::Value));
}
inline void
JSObject::moveDenseArrayElements(uintN dstStart, uintN srcStart, uintN count)
{
JS_ASSERT(isDenseArray());
JS_ASSERT(dstStart + count <= capacity);
JS_ASSERT(srcStart + count <= capacity);
memmove(slots + dstStart, slots + srcStart, count * sizeof(js::Value));
}
inline void
JSObject::shrinkDenseArrayElements(JSContext *cx, uintN cap)
{
JS_ASSERT(isDenseArray());
shrinkSlots(cx, cap);
}
inline bool
JSObject::denseArrayHasInlineSlots() const
{
JS_ASSERT(isDenseArray() && slots);
return slots == fixedSlots();
}
namespace js {
/*
* Any name atom for a function which will be added as a DeclEnv object to the
* scope chain above call objects for fun.
*/
static inline JSAtom *
CallObjectLambdaName(JSFunction *fun)
{
return (fun->flags & JSFUN_LAMBDA) ? fun->atom : NULL;
}
} /* namespace js */
inline const js::Value &
JSObject::getDateUTCTime() const
{
JS_ASSERT(isDate());
return getFixedSlot(JSSLOT_DATE_UTC_TIME);
}
inline void
JSObject::setDateUTCTime(const js::Value &time)
{
JS_ASSERT(isDate());
setFixedSlot(JSSLOT_DATE_UTC_TIME, time);
}
inline js::Value *
JSObject::getFlatClosureUpvars() const
{
#ifdef DEBUG
JSFunction *fun = getFunctionPrivate();
JS_ASSERT(fun->isFlatClosure());
JS_ASSERT(fun->script()->bindings.countUpvars() == fun->script()->upvars()->length);
#endif
return (js::Value *) getFixedSlot(JSSLOT_FLAT_CLOSURE_UPVARS).toPrivate();
}
inline void
JSObject::finalizeUpvarsIfFlatClosure()
{
/*
* Cloned function objects may be flat closures with upvars to free.
*
* We do not record in the closure objects any flags. Rather we use flags
* stored in the compiled JSFunction that we get via getFunctionPrivate()
* to distinguish between closure types. Then during finalization we must
* ensure that the compiled JSFunction always finalized after the closures
* so we can safely access it here. Currently the GC ensures that through
* finalizing JSFunction instances after finalizing any other objects even
* during the background finalization.
*
* But we must not access JSScript here that is stored in JSFunction. The
* script can be finalized before the function or closure instances. So we
* just check if JSSLOT_FLAT_CLOSURE_UPVARS holds a private value encoded
* as a double. We must also ignore newborn closures that do not have the
* private pointer set.
*
* FIXME bug 648320 - allocate upvars on the GC heap to avoid doing it
* here explicitly.
*/
JSFunction *fun = getFunctionPrivate();
if (fun && fun != this && fun->isFlatClosure()) {
const js::Value &v = getSlot(JSSLOT_FLAT_CLOSURE_UPVARS);
if (v.isDouble())
js::Foreground::free_(v.toPrivate());
}
}
inline js::Value
JSObject::getFlatClosureUpvar(uint32 i) const
{
JS_ASSERT(i < getFunctionPrivate()->script()->bindings.countUpvars());
return getFlatClosureUpvars()[i];
}
inline const js::Value &
JSObject::getFlatClosureUpvar(uint32 i)
{
JS_ASSERT(i < getFunctionPrivate()->script()->bindings.countUpvars());
return getFlatClosureUpvars()[i];
}
inline void
JSObject::setFlatClosureUpvar(uint32 i, const js::Value &v)
{
JS_ASSERT(i < getFunctionPrivate()->script()->bindings.countUpvars());
getFlatClosureUpvars()[i] = v;
}
inline void
JSObject::setFlatClosureUpvars(js::Value *upvars)
{
JS_ASSERT(isFunction());
JS_ASSERT(getFunctionPrivate()->isFlatClosure());
setFixedSlot(JSSLOT_FLAT_CLOSURE_UPVARS, js::PrivateValue(upvars));
}
inline bool
JSObject::hasMethodObj(const JSObject& obj) const
{
return JSSLOT_FUN_METHOD_OBJ < numSlots() &&
getFixedSlot(JSSLOT_FUN_METHOD_OBJ).isObject() &&
getFixedSlot(JSSLOT_FUN_METHOD_OBJ).toObject() == obj;
}
inline void
JSObject::setMethodObj(JSObject& obj)
{
setFixedSlot(JSSLOT_FUN_METHOD_OBJ, js::ObjectValue(obj));
}
inline js::NativeIterator *
JSObject::getNativeIterator() const
{
return (js::NativeIterator *) getPrivate();
}
inline void
JSObject::setNativeIterator(js::NativeIterator *ni)
{
setPrivate(ni);
}
inline JSLinearString *
JSObject::getNamePrefix() const
{
JS_ASSERT(isNamespace() || isQName());
const js::Value &v = getSlot(JSSLOT_NAME_PREFIX);
return !v.isUndefined() ? &v.toString()->asLinear() : NULL;
}
inline jsval
JSObject::getNamePrefixVal() const
{
JS_ASSERT(isNamespace() || isQName());
return getSlot(JSSLOT_NAME_PREFIX);
}
inline void
JSObject::setNamePrefix(JSLinearString *prefix)
{
JS_ASSERT(isNamespace() || isQName());
setSlot(JSSLOT_NAME_PREFIX, prefix ? js::StringValue(prefix) : js::UndefinedValue());
}
inline void
JSObject::clearNamePrefix()
{
JS_ASSERT(isNamespace() || isQName());
setSlot(JSSLOT_NAME_PREFIX, js::UndefinedValue());
}
inline JSLinearString *
JSObject::getNameURI() const
{
JS_ASSERT(isNamespace() || isQName());
const js::Value &v = getSlot(JSSLOT_NAME_URI);
return !v.isUndefined() ? &v.toString()->asLinear() : NULL;
}
inline jsval
JSObject::getNameURIVal() const
{
JS_ASSERT(isNamespace() || isQName());
return getSlot(JSSLOT_NAME_URI);
}
inline void
JSObject::setNameURI(JSLinearString *uri)
{
JS_ASSERT(isNamespace() || isQName());
setSlot(JSSLOT_NAME_URI, uri ? js::StringValue(uri) : js::UndefinedValue());
}
inline jsval
JSObject::getNamespaceDeclared() const
{
JS_ASSERT(isNamespace());
return getSlot(JSSLOT_NAMESPACE_DECLARED);
}
inline void
JSObject::setNamespaceDeclared(jsval decl)
{
JS_ASSERT(isNamespace());
setSlot(JSSLOT_NAMESPACE_DECLARED, decl);
}
inline JSAtom *
JSObject::getQNameLocalName() const
{
JS_ASSERT(isQName());
const js::Value &v = getSlot(JSSLOT_QNAME_LOCAL_NAME);
return !v.isUndefined() ? &v.toString()->asAtom() : NULL;
}
inline jsval
JSObject::getQNameLocalNameVal() const
{
JS_ASSERT(isQName());
return getSlot(JSSLOT_QNAME_LOCAL_NAME);
}
inline void
JSObject::setQNameLocalName(JSAtom *name)
{
JS_ASSERT(isQName());
setSlot(JSSLOT_QNAME_LOCAL_NAME, name ? js::StringValue(name) : js::UndefinedValue());
}
inline JSObject *
JSObject::getWithThis() const
{
return &getFixedSlot(JSSLOT_WITH_THIS).toObject();
}
inline void
JSObject::setWithThis(JSObject *thisp)
{
getFixedSlotRef(JSSLOT_WITH_THIS).setObject(*thisp);
}
inline bool
JSObject::setSingletonType(JSContext *cx)
{
if (!cx->typeInferenceEnabled())
return true;
JS_ASSERT(!lastProp->previous());
JS_ASSERT(!hasLazyType());
JS_ASSERT_IF(getProto(), type() == getProto()->getNewType(cx, NULL));
flags |= SINGLETON_TYPE | LAZY_TYPE;
return true;
}
inline js::types::TypeObject *
JSObject::getType(JSContext *cx)
{
if (hasLazyType())
makeLazyType(cx);
return type_;
}
inline js::types::TypeObject *
JSObject::getNewType(JSContext *cx, JSFunction *fun, bool markUnknown)
{
if (isDenseArray() && !makeDenseArraySlow(cx))
return NULL;
if (newType) {
/*
* If set, the newType's newScript indicates the script used to create
* all objects in existence which have this type. If there are objects
* in existence which are not created by calling 'new' on newScript,
* we must clear the new script information from the type and will not
* be able to assume any definite properties for instances of the type.
* This case is rare, but can happen if, for example, two scripted
* functions have the same value for their 'prototype' property, or if
* Object.create is called with a prototype object that is also the
* 'prototype' property of some scripted function.
*/
if (newType->newScript && newType->newScript->fun != fun)
newType->clearNewScript(cx);
if (markUnknown && cx->typeInferenceEnabled() && !newType->unknownProperties())
newType->markUnknown(cx);
} else {
makeNewType(cx, fun, markUnknown);
}
return newType;
}
inline void
JSObject::clearType()
{
JS_ASSERT(!hasSingletonType());
type_ = &js::types::emptyTypeObject;
}
inline void
JSObject::setType(js::types::TypeObject *newType)
{
#ifdef DEBUG
JS_ASSERT(newType);
for (JSObject *obj = newType->proto; obj; obj = obj->getProto())
JS_ASSERT(obj != this);
#endif
JS_ASSERT_IF(hasSpecialEquality(), newType->hasAnyFlags(js::types::OBJECT_FLAG_SPECIAL_EQUALITY));
JS_ASSERT(!hasSingletonType());
type_ = newType;
}
inline void
JSObject::init(JSContext *cx, js::Class *aclasp, js::types::TypeObject *type,
JSObject *parent, void *priv, bool denseArray)
{
clasp = aclasp;
flags = capacity << FIXED_SLOTS_SHIFT;
JS_ASSERT(denseArray == (aclasp == &js::ArrayClass));
#ifdef DEBUG
/*
* NB: objShape must not be set here; rather, the caller must call setMap
* or setSharedNonNativeMap after calling init. To defend this requirement
* we set objShape to a value that obj->shape() is asserted never to return.
*/
objShape = INVALID_SHAPE;
#endif
privateData = priv;
/*
* Fill the fixed slots with undefined if needed. This object must
* already have its capacity filled in, as by js_NewGCObject. If inference
* is disabled, NewArray will backfill holes up to the array's capacity
* and unset the PACKED_ARRAY flag.
*/
slots = NULL;
if (denseArray) {
slots = fixedSlots();
flags |= PACKED_ARRAY;
} else {
js::ClearValueRange(fixedSlots(), capacity, denseArray);
}
newType = NULL;
JS_ASSERT(initializedLength == 0);
setType(type);
setParent(parent);
}
inline void
JSObject::finish(JSContext *cx)
{
if (hasSlotsArray())
cx->free_(slots);
}
inline bool
JSObject::initSharingEmptyShape(JSContext *cx,
js::Class *aclasp,
js::types::TypeObject *type,
JSObject *parent,
void *privateValue,
js::gc::AllocKind kind)
{
init(cx, aclasp, type, parent, privateValue, false);
JS_ASSERT(!isDenseArray());
js::EmptyShape *empty = type->getEmptyShape(cx, aclasp, kind);
if (!empty)
return false;
setMap(empty);
return true;
}
inline bool
JSObject::hasProperty(JSContext *cx, jsid id, bool *foundp, uintN flags)
{
JSObject *pobj;
JSProperty *prop;
JSAutoResolveFlags rf(cx, flags);
if (!lookupGeneric(cx, id, &pobj, &prop))
return false;
*foundp = !!prop;
return true;
}
inline bool
JSObject::isCallable()
{
return isFunction() || getClass()->call;
}
inline JSPrincipals *
JSObject::principals(JSContext *cx)
{
JSSecurityCallbacks *cb = JS_GetSecurityCallbacks(cx);
if (JSObjectPrincipalsFinder finder = cb ? cb->findObjectPrincipals : NULL)
return finder(cx, this);
return cx->compartment ? cx->compartment->principals : NULL;
}
inline uint32
JSObject::slotSpan() const
{
return lastProp->slotSpan;
}
inline bool
JSObject::containsSlot(uint32 slot) const
{
return slot < slotSpan();
}
inline void
JSObject::setMap(js::Shape *amap)
{
JS_ASSERT(!hasOwnShape());
lastProp = amap;
objShape = lastProp->shapeid;
}
inline js::Value &
JSObject::nativeGetSlotRef(uintN slot)
{
JS_ASSERT(isNative());
JS_ASSERT(containsSlot(slot));
return getSlotRef(slot);
}
inline const js::Value &
JSObject::nativeGetSlot(uintN slot) const
{
JS_ASSERT(isNative());
JS_ASSERT(containsSlot(slot));
return getSlot(slot);
}
inline void
JSObject::nativeSetSlot(uintN slot, const js::Value &value)
{
JS_ASSERT(isNative());
JS_ASSERT(containsSlot(slot));
return setSlot(slot, value);
}
inline void
JSObject::nativeSetSlotWithType(JSContext *cx, const js::Shape *shape, const js::Value &value)
{
nativeSetSlot(shape->slot, value);
js::types::AddTypePropertyId(cx, this, shape->propid, value);
}
inline bool
JSObject::isNative() const
{
return lastProp->isNative();
}
inline bool
JSObject::isNewborn() const
{
return !lastProp;
}
inline void
JSObject::clearOwnShape()
{
flags &= ~OWN_SHAPE;
objShape = lastProp->shapeid;
}
inline void
JSObject::setOwnShape(uint32 s)
{
flags |= OWN_SHAPE;
objShape = s;
}
inline js::Shape **
JSObject::nativeSearch(JSContext *cx, jsid id, bool adding)
{
return js::Shape::search(cx, &lastProp, id, adding);
}
inline const js::Shape *
JSObject::nativeLookup(JSContext *cx, jsid id)
{
JS_ASSERT(isNative());
return SHAPE_FETCH(nativeSearch(cx, id));
}
inline bool
JSObject::nativeContains(JSContext *cx, jsid id)
{
return nativeLookup(cx, id) != NULL;
}
inline bool
JSObject::nativeContains(JSContext *cx, const js::Shape &shape)
{
return nativeLookup(cx, shape.propid) == &shape;
}
inline const js::Shape *
JSObject::lastProperty() const
{
JS_ASSERT(isNative());
JS_ASSERT(!JSID_IS_VOID(lastProp->propid));
return lastProp;
}
inline bool
JSObject::nativeEmpty() const
{
return lastProperty()->isEmptyShape();
}
inline bool
JSObject::inDictionaryMode() const
{
return lastProperty()->inDictionary();
}
inline uint32
JSObject::propertyCount() const
{
return lastProperty()->entryCount();
}
inline bool
JSObject::hasPropertyTable() const
{
return lastProperty()->hasTable();
}
/*
* FIXME: shape must not be null, should use a reference here and other places.
*/
inline void
JSObject::setLastProperty(const js::Shape *shape)
{
JS_ASSERT(!inDictionaryMode());
JS_ASSERT(!JSID_IS_VOID(shape->propid));
JS_ASSERT_IF(lastProp, !JSID_IS_VOID(lastProp->propid));
JS_ASSERT(shape->compartment() == compartment());
lastProp = const_cast<js::Shape *>(shape);
}
inline void
JSObject::removeLastProperty()
{
JS_ASSERT(!inDictionaryMode());
JS_ASSERT(!JSID_IS_VOID(lastProp->parent->propid));
lastProp = lastProp->parent;
}
inline void
JSObject::setSharedNonNativeMap()
{
setMap(&js::Shape::sharedNonNative);
}
inline JSBool
JSObject::lookupGeneric(JSContext *cx, jsid id, JSObject **objp, JSProperty **propp)
{
js::LookupGenericOp op = getOps()->lookupGeneric;
return (op ? op : js_LookupProperty)(cx, this, id, objp, propp);
}
inline JSBool
JSObject::lookupProperty(JSContext *cx, js::PropertyName *name, JSObject **objp, JSProperty **propp)
{
return lookupGeneric(cx, ATOM_TO_JSID(name), objp, propp);
}
inline JSBool
JSObject::defineGeneric(JSContext *cx, jsid id, const js::Value &value,
JSPropertyOp getter /* = JS_PropertyStub */,
JSStrictPropertyOp setter /* = JS_StrictPropertyStub */,
uintN attrs /* = JSPROP_ENUMERATE */)
{
js::DefineGenericOp op = getOps()->defineGeneric;
return (op ? op : js_DefineProperty)(cx, this, id, &value, getter, setter, attrs);
}
inline JSBool
JSObject::defineProperty(JSContext *cx, js::PropertyName *name, const js::Value &value,
JSPropertyOp getter /* = JS_PropertyStub */,
JSStrictPropertyOp setter /* = JS_StrictPropertyStub */,
uintN attrs /* = JSPROP_ENUMERATE */)
{
return defineGeneric(cx, ATOM_TO_JSID(name), value, getter, setter, attrs);
}
inline JSBool
JSObject::defineElement(JSContext *cx, uint32 index, const js::Value &value,
JSPropertyOp getter /* = JS_PropertyStub */,
JSStrictPropertyOp setter /* = JS_StrictPropertyStub */,
uintN attrs /* = JSPROP_ENUMERATE */)
{
js::DefineElementOp op = getOps()->defineElement;
return (op ? op : js_DefineElement)(cx, this, index, &value, getter, setter, attrs);
}
inline JSBool
JSObject::defineSpecial(JSContext *cx, js::SpecialId sid, const js::Value &value,
JSPropertyOp getter /* = JS_PropertyStub */,
JSStrictPropertyOp setter /* = JS_StrictPropertyStub */,
uintN attrs /* = JSPROP_ENUMERATE */)
{
return defineGeneric(cx, SPECIALID_TO_JSID(sid), value, getter, setter, attrs);
}
inline JSBool
JSObject::lookupElement(JSContext *cx, uint32 index, JSObject **objp, JSProperty **propp)
{
js::LookupElementOp op = getOps()->lookupElement;
return (op ? op : js_LookupElement)(cx, this, index, objp, propp);
}
inline JSBool
JSObject::lookupSpecial(JSContext *cx, js::SpecialId sid, JSObject **objp, JSProperty **propp)
{
return lookupGeneric(cx, SPECIALID_TO_JSID(sid), objp, propp);
}
inline JSBool
JSObject::getElement(JSContext *cx, JSObject *receiver, uint32 index, js::Value *vp)
{
js::ElementIdOp op = getOps()->getElement;
if (op)
return op(cx, this, receiver, index, vp);
jsid id;
if (!js::IndexToId(cx, index, &id))
return false;
return getGeneric(cx, receiver, id, vp);
}
inline JSBool
JSObject::getElement(JSContext *cx, uint32 index, js::Value *vp)
{
return getElement(cx, this, index, vp);
}
inline JSBool
JSObject::getElementIfPresent(JSContext *cx, JSObject *receiver, uint32 index, js::Value *vp,
bool *present)
{
js::ElementIfPresentOp op = getOps()->getElementIfPresent;
if (op)
return op(cx, this, receiver, index, vp, present);
/* For now, do the index-to-id conversion just once, then use
* lookupGeneric/getGeneric. Once lookupElement and getElement stop both
* doing index-to-id conversions, we can use those here.
*/
jsid id;
if (!js::IndexToId(cx, index, &id))
return false;
JSObject *obj2;
JSProperty *prop;
if (!lookupGeneric(cx, id, &obj2, &prop))
return false;
if (!prop) {
*present = false;
js::Debug_SetValueRangeToCrashOnTouch(vp, 1);
return true;
}
*present = true;
return getGeneric(cx, receiver, id, vp);
}
inline JSBool
JSObject::getSpecial(JSContext *cx, js::SpecialId sid, js::Value *vp)
{
return getGeneric(cx, SPECIALID_TO_JSID(sid), vp);
}
inline JSBool
JSObject::getGenericAttributes(JSContext *cx, jsid id, uintN *attrsp)
{
js::GenericAttributesOp op = getOps()->getGenericAttributes;
return (op ? op : js_GetAttributes)(cx, this, id, attrsp);
}
inline JSBool
JSObject::getPropertyAttributes(JSContext *cx, js::PropertyName *name, uintN *attrsp)
{
return getGenericAttributes(cx, ATOM_TO_JSID(name), attrsp);
}
inline JSBool
JSObject::getElementAttributes(JSContext *cx, uint32 index, uintN *attrsp)
{
jsid id;
if (!js::IndexToId(cx, index, &id))
return false;
return getGenericAttributes(cx, id, attrsp);
}
inline JSBool
JSObject::getSpecialAttributes(JSContext *cx, js::SpecialId sid, uintN *attrsp)
{
return getGenericAttributes(cx, SPECIALID_TO_JSID(sid), attrsp);
}
inline bool
JSObject::isProxy() const
{
return js::IsProxy(this);
}
inline bool
JSObject::isCrossCompartmentWrapper() const
{
return js::IsCrossCompartmentWrapper(this);
}
inline bool
JSObject::isWrapper() const
{
return js::IsWrapper(this);
}
static inline bool
js_IsCallable(const js::Value &v)
{
return v.isObject() && v.toObject().isCallable();
}
inline JSObject *
js_UnwrapWithObject(JSContext *cx, JSObject *withobj)
{
JS_ASSERT(withobj->isWith());
return withobj->getProto();
}
namespace js {
class AutoPropDescArrayRooter : private AutoGCRooter
{
public:
AutoPropDescArrayRooter(JSContext *cx)
: AutoGCRooter(cx, DESCRIPTORS), descriptors(cx)
{ }
PropDesc *append() {
if (!descriptors.append(PropDesc()))
return NULL;
return &descriptors.back();
}
PropDesc& operator[](size_t i) {
JS_ASSERT(i < descriptors.length());
return descriptors[i];
}
friend void AutoGCRooter::trace(JSTracer *trc);
private:
PropDescArray descriptors;
};
class AutoPropertyDescriptorRooter : private AutoGCRooter, public PropertyDescriptor
{
public:
AutoPropertyDescriptorRooter(JSContext *cx) : AutoGCRooter(cx, DESCRIPTOR) {
obj = NULL;
attrs = 0;
getter = (PropertyOp) NULL;
setter = (StrictPropertyOp) NULL;
value.setUndefined();
}
AutoPropertyDescriptorRooter(JSContext *cx, PropertyDescriptor *desc)
: AutoGCRooter(cx, DESCRIPTOR)
{
obj = desc->obj;
attrs = desc->attrs;
getter = desc->getter;
setter = desc->setter;
value = desc->value;
}
friend void AutoGCRooter::trace(JSTracer *trc);
};
static inline bool
InitScopeForObject(JSContext* cx, JSObject* obj, js::Class *clasp, js::types::TypeObject *type,
gc::AllocKind kind)
{
JS_ASSERT(clasp->isNative());
/* Share proto's emptyShape only if obj is similar to proto. */
js::EmptyShape *empty = NULL;
uint32 freeslot = JSSLOT_FREE(clasp);
if (freeslot > obj->numSlots() && !obj->allocSlots(cx, freeslot))
goto bad;
if (type->canProvideEmptyShape(clasp))
empty = type->getEmptyShape(cx, clasp, kind);
else
empty = js::EmptyShape::create(cx, clasp);
if (!empty)
goto bad;
obj->setMap(empty);
return true;
bad:
/* The GC nulls map initially. It should still be null on error. */
JS_ASSERT(obj->isNewborn());
return false;
}
static inline bool
CanBeFinalizedInBackground(gc::AllocKind kind, Class *clasp)
{
#ifdef JS_THREADSAFE
JS_ASSERT(kind <= gc::FINALIZE_OBJECT_LAST);
/* If the class has no finalizer or a finalizer that is safe to call on
* a different thread, we change the finalize kind. For example,
* FINALIZE_OBJECT0 calls the finalizer on the main thread,
* FINALIZE_OBJECT0_BACKGROUND calls the finalizer on the gcHelperThread.
* IsBackgroundAllocKind is called to prevent recursively incrementing
* the finalize kind; kind may already be a background finalize kind.
*/
if (!gc::IsBackgroundAllocKind(kind) &&
(!clasp->finalize || clasp->flags & JSCLASS_CONCURRENT_FINALIZER)) {
return true;
}
#endif
return false;
}
/*
* Helper optimized for creating a native instance of the given class (not the
* class's prototype object). Use this in preference to NewObject, but use
* NewBuiltinClassInstance if you need the default class prototype as proto,
* and its parent global as parent.
*/
static inline JSObject *
NewNativeClassInstance(JSContext *cx, Class *clasp, JSObject *proto,
JSObject *parent, gc::AllocKind kind)
{
JS_ASSERT(proto);
JS_ASSERT(parent);
JS_ASSERT(kind <= gc::FINALIZE_OBJECT_LAST);
types::TypeObject *type = proto->getNewType(cx);
if (!type)
return NULL;
/*
* Allocate an object from the GC heap and initialize all its fields before
* doing any operation that can potentially trigger GC.
*/
if (CanBeFinalizedInBackground(kind, clasp))
kind = GetBackgroundAllocKind(kind);
JSObject* obj = js_NewGCObject(cx, kind);
if (obj) {
/*
* Default parent to the parent of the prototype, which was set from
* the parent of the prototype's constructor.
*/
bool denseArray = (clasp == &ArrayClass);
obj->init(cx, clasp, type, parent, NULL, denseArray);
JS_ASSERT(type->canProvideEmptyShape(clasp));
js::EmptyShape *empty = type->getEmptyShape(cx, clasp, kind);
if (empty)
obj->setMap(empty);
else
obj = NULL;
}
return obj;
}
static inline JSObject *
NewNativeClassInstance(JSContext *cx, Class *clasp, JSObject *proto, JSObject *parent)
{
gc::AllocKind kind = gc::GetGCObjectKind(JSCLASS_RESERVED_SLOTS(clasp));
return NewNativeClassInstance(cx, clasp, proto, parent, kind);
}
inline GlobalObject *
GetCurrentGlobal(JSContext *cx)
{
JSObject *scopeChain = (cx->hasfp()) ? &cx->fp()->scopeChain() : cx->globalObject;
return scopeChain ? scopeChain->getGlobal() : NULL;
}
bool
FindClassPrototype(JSContext *cx, JSObject *scope, JSProtoKey protoKey, JSObject **protop,
Class *clasp);
/*
* Helper used to create Boolean, Date, RegExp, etc. instances of built-in
* classes with class prototypes of the same Class. See, e.g., jsdate.cpp,
* jsregexp.cpp, and js_PrimitiveToObject in jsobj.cpp. Use this to get the
* right default proto and parent for clasp in cx.
*/
static inline JSObject *
NewBuiltinClassInstance(JSContext *cx, Class *clasp, gc::AllocKind kind)
{
VOUCH_DOES_NOT_REQUIRE_STACK();
JSProtoKey protoKey = JSCLASS_CACHED_PROTO_KEY(clasp);
JS_ASSERT(protoKey != JSProto_Null);
/* NB: inline-expanded and specialized version of js_GetClassPrototype. */
JSObject *global;
if (!cx->hasfp()) {
global = JS_ObjectToInnerObject(cx, cx->globalObject);
if (!global)
return NULL;
} else {
global = cx->fp()->scopeChain().getGlobal();
}
JS_ASSERT(global->isGlobal());
const Value &v = global->getReservedSlot(JSProto_LIMIT + protoKey);
JSObject *proto;
if (v.isObject()) {
proto = &v.toObject();
JS_ASSERT(proto->getParent() == global);
} else {
if (!FindClassPrototype(cx, global, protoKey, &proto, clasp))
return NULL;
}
return NewNativeClassInstance(cx, clasp, proto, global, kind);
}
static inline JSObject *
NewBuiltinClassInstance(JSContext *cx, Class *clasp)
{
gc::AllocKind kind = gc::GetGCObjectKind(JSCLASS_RESERVED_SLOTS(clasp));
return NewBuiltinClassInstance(cx, clasp, kind);
}
static inline JSProtoKey
GetClassProtoKey(js::Class *clasp)
{
JSProtoKey key = JSCLASS_CACHED_PROTO_KEY(clasp);
if (key != JSProto_Null)
return key;
if (clasp->flags & JSCLASS_IS_ANONYMOUS)
return JSProto_Object;
return JSProto_Null;
}
namespace WithProto {
enum e {
Class = 0,
Given = 1
};
}
/*
* Create an instance of any class, native or not, JSFunction-sized or not.
*
* If withProto is 'Class':
* If proto is null:
* for a built-in class:
* use the memoized original value of the class constructor .prototype
* property object
* else if available
* the current value of .prototype
* else
* Object.prototype.
*
* If parent is null, default it to proto->getParent() if proto is non
* null, else to null.
*
* If withProto is 'Given':
* We allocate an object with exactly the given proto. A null parent
* defaults to proto->getParent() if proto is non-null (else to null).
*
* If isFunction is true, return a JSFunction-sized object. If isFunction is
* false, return a normal object.
*
* Note that as a template, there will be lots of instantiations, which means
* the internals will be specialized based on the template parameters.
*/
static JS_ALWAYS_INLINE bool
FindProto(JSContext *cx, js::Class *clasp, JSObject *parent, JSObject ** proto)
{
JSProtoKey protoKey = GetClassProtoKey(clasp);
if (!js_GetClassPrototype(cx, parent, protoKey, proto, clasp))
return false;
if (!(*proto) && !js_GetClassPrototype(cx, parent, JSProto_Object, proto))
return false;
return true;
}
namespace detail
{
template <bool withProto, bool isFunction>
static JS_ALWAYS_INLINE JSObject *
NewObject(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent,
gc::AllocKind kind)
{
/* Bootstrap the ur-object, and make it the default prototype object. */
if (withProto == WithProto::Class && !proto) {
if (!FindProto(cx, clasp, parent, &proto))
return NULL;
}
types::TypeObject *type = proto ? proto->getNewType(cx) : &js::types::emptyTypeObject;
if (!type)
return NULL;
/*
* Allocate an object from the GC heap and initialize all its fields before
* doing any operation that can potentially trigger GC. Functions have a
* larger non-standard allocation size.
*
* The should be specialized by the template.
*/
if (!isFunction && CanBeFinalizedInBackground(kind, clasp))
kind = GetBackgroundAllocKind(kind);
JSObject* obj = isFunction ? js_NewGCFunction(cx) : js_NewGCObject(cx, kind);
if (!obj)
goto out;
/* This needs to match up with the size of JSFunction::data_padding. */
JS_ASSERT_IF(isFunction, kind == gc::FINALIZE_OBJECT2);
/*
* Default parent to the parent of the prototype, which was set from
* the parent of the prototype's constructor.
*/
obj->init(cx, clasp, type,
(!parent && proto) ? proto->getParent() : parent,
NULL, clasp == &ArrayClass);
if (clasp->isNative()) {
if (!InitScopeForObject(cx, obj, clasp, type, kind)) {
obj = NULL;
goto out;
}
} else {
obj->setSharedNonNativeMap();
}
out:
Probes::createObject(cx, obj);
return obj;
}
} /* namespace detail */
static JS_ALWAYS_INLINE JSObject *
NewFunction(JSContext *cx, js::GlobalObject &global)
{
JSObject *proto;
if (!js_GetClassPrototype(cx, &global, JSProto_Function, &proto))
return NULL;
return detail::NewObject<WithProto::Given, true>(cx, &FunctionClass, proto, &global,
gc::FINALIZE_OBJECT2);
}
static JS_ALWAYS_INLINE JSObject *
NewFunction(JSContext *cx, JSObject *parent)
{
return detail::NewObject<WithProto::Class, true>(cx, &FunctionClass, NULL, parent,
gc::FINALIZE_OBJECT2);
}
template <WithProto::e withProto>
static JS_ALWAYS_INLINE JSObject *
NewNonFunction(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent,
gc::AllocKind kind)
{
return detail::NewObject<withProto, false>(cx, clasp, proto, parent, kind);
}
template <WithProto::e withProto>
static JS_ALWAYS_INLINE JSObject *
NewNonFunction(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent)
{
gc::AllocKind kind = gc::GetGCObjectKind(JSCLASS_RESERVED_SLOTS(clasp));
return detail::NewObject<withProto, false>(cx, clasp, proto, parent, kind);
}
template <WithProto::e withProto>
static JS_ALWAYS_INLINE JSObject *
NewObject(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent,
gc::AllocKind kind)
{
if (clasp == &FunctionClass)
return detail::NewObject<withProto, true>(cx, clasp, proto, parent, kind);
return detail::NewObject<withProto, false>(cx, clasp, proto, parent, kind);
}
template <WithProto::e withProto>
static JS_ALWAYS_INLINE JSObject *
NewObject(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent)
{
gc::AllocKind kind = gc::GetGCObjectKind(JSCLASS_RESERVED_SLOTS(clasp));
return NewObject<withProto>(cx, clasp, proto, parent, kind);
}
/*
* Create a plain object with the specified type. This bypasses getNewType to
* avoid losing creation site information for objects made by scripted 'new'.
*/
static JS_ALWAYS_INLINE JSObject *
NewObjectWithType(JSContext *cx, types::TypeObject *type, JSObject *parent, gc::AllocKind kind)
{
JS_ASSERT(type == type->proto->newType);
if (CanBeFinalizedInBackground(kind, &ObjectClass))
kind = GetBackgroundAllocKind(kind);
JSObject* obj = js_NewGCObject(cx, kind);
if (!obj)
goto out;
/*
* Default parent to the parent of the prototype, which was set from
* the parent of the prototype's constructor.
*/
obj->init(cx, &ObjectClass, type,
(!parent && type->proto) ? type->proto->getParent() : parent,
NULL, false);
if (!InitScopeForObject(cx, obj, &ObjectClass, type, kind)) {
obj = NULL;
goto out;
}
out:
Probes::createObject(cx, obj);
return obj;
}
extern JSObject *
NewReshapedObject(JSContext *cx, js::types::TypeObject *type, JSObject *parent,
gc::AllocKind kind, const Shape *shape);
/*
* As for gc::GetGCObjectKind, where numSlots is a guess at the final size of
* the object, zero if the final size is unknown. This should only be used for
* objects that do not require any fixed slots.
*/
static inline gc::AllocKind
GuessObjectGCKind(size_t numSlots, bool isArray)
{
if (numSlots)
return gc::GetGCObjectKind(numSlots, isArray);
return isArray ? gc::FINALIZE_OBJECT8 : gc::FINALIZE_OBJECT4;
}
/*
* Get the GC kind to use for scripted 'new' on the given class.
* FIXME bug 547327: estimate the size from the allocation site.
*/
static inline gc::AllocKind
NewObjectGCKind(JSContext *cx, js::Class *clasp)
{
if (clasp == &ArrayClass || clasp == &SlowArrayClass)
return gc::FINALIZE_OBJECT8;
if (clasp == &FunctionClass)
return gc::FINALIZE_OBJECT2;
return gc::FINALIZE_OBJECT4;
}
static JS_ALWAYS_INLINE JSObject*
NewObjectWithClassProto(JSContext *cx, Class *clasp, JSObject *proto,
gc::AllocKind kind)
{
JS_ASSERT(clasp->isNative());
types::TypeObject *type = proto->getNewType(cx);
if (!type)
return NULL;
if (CanBeFinalizedInBackground(kind, clasp))
kind = GetBackgroundAllocKind(kind);
JSObject* obj = js_NewGCObject(cx, kind);
if (!obj)
return NULL;
if (!obj->initSharingEmptyShape(cx, clasp, type, proto->getParent(), NULL, kind))
return NULL;
return obj;
}
/* Make an object with pregenerated shape from a NEWOBJECT bytecode. */
static inline JSObject *
CopyInitializerObject(JSContext *cx, JSObject *baseobj, types::TypeObject *type)
{
JS_ASSERT(baseobj->getClass() == &ObjectClass);
JS_ASSERT(!baseobj->inDictionaryMode());
gc::AllocKind kind = gc::GetGCObjectFixedSlotsKind(baseobj->numFixedSlots());
#ifdef JS_THREADSAFE
kind = gc::GetBackgroundAllocKind(kind);
#endif
JS_ASSERT(kind == baseobj->getAllocKind());
JSObject *obj = NewBuiltinClassInstance(cx, &ObjectClass, kind);
if (!obj || !obj->ensureSlots(cx, baseobj->numSlots()))
return NULL;
obj->setType(type);
obj->flags = baseobj->flags;
obj->lastProp = baseobj->lastProp;
obj->objShape = baseobj->objShape;
return obj;
}
inline bool
DefineConstructorAndPrototype(JSContext *cx, GlobalObject *global,
JSProtoKey key, JSObject *ctor, JSObject *proto)
{
JS_ASSERT(!global->nativeEmpty()); /* reserved slots already allocated */
JS_ASSERT(ctor);
JS_ASSERT(proto);
jsid id = ATOM_TO_JSID(cx->runtime->atomState.classAtoms[key]);
JS_ASSERT(!global->nativeLookup(cx, id));
/* Set these first in case AddTypePropertyId looks for this class. */
global->setSlot(key, ObjectValue(*ctor));
global->setSlot(key + JSProto_LIMIT, ObjectValue(*proto));
types::AddTypePropertyId(cx, global, id, ObjectValue(*ctor));
if (!global->addDataProperty(cx, id, key + JSProto_LIMIT * 2, 0)) {
global->setSlot(key, UndefinedValue());
global->setSlot(key + JSProto_LIMIT, UndefinedValue());
return false;
}
global->setSlot(key + JSProto_LIMIT * 2, ObjectValue(*ctor));
return true;
}
bool
PropDesc::checkGetter(JSContext *cx)
{
if (hasGet && !js_IsCallable(get) && !get.isUndefined()) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_BAD_GET_SET_FIELD,
js_getter_str);
return false;
}
return true;
}
bool
PropDesc::checkSetter(JSContext *cx)
{
if (hasSet && !js_IsCallable(set) && !set.isUndefined()) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_BAD_GET_SET_FIELD,
js_setter_str);
return false;
}
return true;
}
namespace detail {
template<typename T> class PrimitiveBehavior { };
template<>
class PrimitiveBehavior<JSString *> {
public:
static inline bool isType(const Value &v) { return v.isString(); }
static inline JSString *extract(const Value &v) { return v.toString(); }
static inline Class *getClass() { return &StringClass; }
};
template<>
class PrimitiveBehavior<bool> {
public:
static inline bool isType(const Value &v) { return v.isBoolean(); }
static inline bool extract(const Value &v) { return v.toBoolean(); }
static inline Class *getClass() { return &BooleanClass; }
};
template<>
class PrimitiveBehavior<double> {
public:
static inline bool isType(const Value &v) { return v.isNumber(); }
static inline double extract(const Value &v) { return v.toNumber(); }
static inline Class *getClass() { return &NumberClass; }
};
} /* namespace detail */
inline JSObject *
NonGenericMethodGuard(JSContext *cx, CallArgs args, Native native, Class *clasp, bool *ok)
{
const Value &thisv = args.thisv();
if (thisv.isObject()) {
JSObject &obj = thisv.toObject();
if (obj.getClass() == clasp) {
*ok = true; /* quell gcc overwarning */
return &obj;
}
}
*ok = HandleNonGenericMethodClassMismatch(cx, args, native, clasp);
return NULL;
}
template <typename T>
inline bool
BoxedPrimitiveMethodGuard(JSContext *cx, CallArgs args, Native native, T *v, bool *ok)
{
typedef detail::PrimitiveBehavior<T> Behavior;
const Value &thisv = args.thisv();
if (Behavior::isType(thisv)) {
*v = Behavior::extract(thisv);
return true;
}
if (!NonGenericMethodGuard(cx, args, native, Behavior::getClass(), ok))
return false;
*v = Behavior::extract(thisv.toObject().getPrimitiveThis());
return true;
}
inline bool
ObjectClassIs(JSObject &obj, ESClassValue classValue, JSContext *cx)
{
if (JS_UNLIKELY(obj.isProxy()))
return Proxy::objectClassIs(&obj, classValue, cx);
switch (classValue) {
case ESClass_Array: return obj.isArray();
case ESClass_Number: return obj.isNumber();
case ESClass_String: return obj.isString();
case ESClass_Boolean: return obj.isBoolean();
}
JS_NOT_REACHED("bad classValue");
return false;
}
static JS_ALWAYS_INLINE bool
ValueIsSpecial(JSObject *obj, Value *propval, SpecialId *sidp, JSContext *cx)
{
if (!propval->isObject())
return false;
#if JS_HAS_XML_SUPPORT
if (obj->isXML()) {
*sidp = SpecialId(propval->toObject());
return true;
}
JSObject &propobj = propval->toObject();
JSAtom *name;
if (propobj.isQName() && GetLocalNameFromFunctionQName(&propobj, &name, cx)) {
propval->setString(name);
return false;
}
#endif
return false;
}
} /* namespace js */
inline JSObject *
js_GetProtoIfDenseArray(JSObject *obj)
{
return obj->isDenseArray() ? obj->getProto() : obj;
}
#endif /* jsobjinlines_h___ */