/* -*- 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 "jsgcmark.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 "gc/Barrier.h"
#include "js/TemplateLib.h"
#include "vm/GlobalObject.h"
#include "jsatominlines.h"
#include "jsfuninlines.h"
#include "jsgcinlines.h"
#include "jsscopeinlines.h"
#include "gc/Barrier-inl.h"
#include "vm/String-inl.h"
inline bool
JSObject::hasPrivate() const
{
return getClass()->hasPrivate();
}
inline void *&
JSObject::privateRef(uint32_t nfixed) const
{
/*
* The private pointer of an object can hold any word sized value.
* Private pointers are stored immediately after the last fixed slot of
* the object.
*/
JS_ASSERT(nfixed == numFixedSlots());
JS_ASSERT(hasPrivate());
js::HeapValue *end = &fixedSlots()[nfixed];
return *reinterpret_cast<void**>(end);
}
inline void *
JSObject::getPrivate() const { return privateRef(numFixedSlots()); }
inline void *
JSObject::getPrivate(size_t nfixed) const { return privateRef(nfixed); }
inline void
JSObject::setPrivate(void *data)
{
void **pprivate = &privateRef(numFixedSlots());
privateWriteBarrierPre(pprivate);
*pprivate = data;
privateWriteBarrierPost(pprivate);
}
inline bool
JSObject::enumerate(JSContext *cx, JSIterateOp iterop, js::Value *statep, jsid *idp)
{
JSNewEnumerateOp op = getOps()->enumerate;
return (op ? op : JS_EnumerateState)(cx, this, iterop, statep, idp);
}
inline bool
JSObject::defaultValue(JSContext *cx, JSType hint, js::Value *vp)
{
JSConvertOp op = getClass()->convert;
bool ok = (op == JS_ConvertStub ? js::DefaultValue : op)(cx, this, hint, vp);
JS_ASSERT_IF(ok, vp->isPrimitive());
return ok;
}
inline JSType
JSObject::typeOf(JSContext *cx)
{
js::TypeOfOp op = getOps()->typeOf;
return (op ? op : js_TypeOf)(cx, this);
}
inline JSObject *
JSObject::thisObject(JSContext *cx)
{
JSObjectOp op = getOps()->thisObject;
return op ? op(cx, this) : this;
}
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_t 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_t 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_t 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::finalize(JSContext *cx, bool background)
{
js::Probes::finalizeObject(this);
if (!background) {
/*
* Finalize obj first, in case it needs map and slots. Objects with
* finalize hooks are not finalized in the background, as the class is
* stored in the object's shape, which may have already been destroyed.
*/
js::Class *clasp = getClass();
if (clasp->finalize)
clasp->finalize(cx, this);
}
finish(cx);
}
inline JSObject *
JSObject::getParent() const
{
return lastProperty()->getObjectParent();
}
inline bool
JSObject::isInternalScope() const
{
return isCall() || isDeclEnv() || isBlock() || isWith();
}
inline JSObject *
JSObject::internalScopeChain() const
{
JS_ASSERT(isInternalScope());
return &getFixedSlot(SCOPE_CHAIN_SLOT).toObject();
}
inline bool
JSObject::setInternalScopeChain(JSContext *cx, JSObject *obj)
{
JS_ASSERT(isInternalScope());
if (!obj->setDelegate(cx))
return false;
setFixedSlot(SCOPE_CHAIN_SLOT, JS::ObjectValue(*obj));
return true;
}
/*static*/ inline size_t
JSObject::offsetOfInternalScopeChain()
{
return getFixedSlotOffset(SCOPE_CHAIN_SLOT);
}
inline JSObject *
JSObject::scopeChain() const
{
return isInternalScope() ? internalScopeChain() : getParent();
}
inline JSObject *
JSObject::getStaticBlockScopeChain() const
{
JS_ASSERT(isStaticBlock());
return getFixedSlot(SCOPE_CHAIN_SLOT).toObjectOrNull();
}
inline void
JSObject::setStaticBlockScopeChain(JSObject *obj)
{
JS_ASSERT(isStaticBlock());
setFixedSlot(SCOPE_CHAIN_SLOT, JS::ObjectOrNullValue(obj));
}
/*
* Property read barrier for deferred cloning of compiler-created function
* objects optimized as typically non-escaping, ad-hoc methods in obj.
*/
inline js::Shape *
JSObject::methodReadBarrier(JSContext *cx, const js::Shape &shape, js::Value *vp)
{
JS_ASSERT(nativeContains(cx, shape));
JS_ASSERT(shape.isMethod());
JS_ASSERT(shape.writable());
JS_ASSERT(shape.hasSlot());
JS_ASSERT(shape.hasDefaultSetter());
JS_ASSERT(!isGlobal()); /* i.e. we are not changing the global shape */
JSFunction *fun = vp->toObject().toFunction();
JS_ASSERT(!fun->isClonedMethod());
JS_ASSERT(fun->isNullClosure());
fun = js::CloneFunctionObject(cx, fun);
if (!fun)
return NULL;
fun->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_t slot = shape.slot();
js::Shape *newshape = methodShapeChange(cx, shape);
if (!newshape)
return NULL;
JS_ASSERT(!newshape->isMethod());
JS_ASSERT(newshape->slot() == slot);
vp->setObject(*fun);
nativeSetSlot(slot, *vp);
return newshape;
}
inline bool
JSObject::canHaveMethodBarrier() const
{
return isObject() || isFunction() || isPrimitive() || isDate();
}
inline bool
JSObject::isFixedSlot(size_t slot)
{
JS_ASSERT(!isDenseArray());
return slot < numFixedSlots();
}
inline size_t
JSObject::dynamicSlotIndex(size_t slot)
{
JS_ASSERT(!isDenseArray() && slot >= numFixedSlots());
return slot - numFixedSlots();
}
/*static*/ inline size_t
JSObject::dynamicSlotsCount(size_t nfixed, size_t span)
{
if (span <= nfixed)
return 0;
span -= nfixed;
if (span <= SLOT_CAPACITY_MIN)
return SLOT_CAPACITY_MIN;
size_t slots = js::RoundUpPow2(span);
JS_ASSERT(slots >= span);
return slots;
}
inline size_t
JSObject::numDynamicSlots() const
{
return dynamicSlotsCount(numFixedSlots(), slotSpan());
}
inline void
JSObject::setLastPropertyInfallible(const js::Shape *shape)
{
JS_ASSERT(!shape->inDictionary());
JS_ASSERT(shape->compartment() == compartment());
JS_ASSERT(!inDictionaryMode());
JS_ASSERT(slotSpan() == shape->slotSpan());
JS_ASSERT(numFixedSlots() == shape->numFixedSlots());
shape_ = const_cast<js::Shape *>(shape);
}
inline void
JSObject::removeLastProperty(JSContext *cx)
{
JS_ASSERT(canRemoveLastProperty());
JS_ALWAYS_TRUE(setLastProperty(cx, lastProperty()->previous()));
}
inline bool
JSObject::canRemoveLastProperty()
{
/*
* Check that the information about the object stored in the last
* property's base shape is consistent with that stored in the previous
* shape. If not consistent, then the last property cannot be removed as it
* will induce a change in the object itself, and the object must be
* converted to dictionary mode instead. See BaseShape comment in jsscope.h
*/
JS_ASSERT(!inDictionaryMode());
const js::Shape *previous = lastProperty()->previous();
return previous->getObjectParent() == lastProperty()->getObjectParent()
&& previous->getObjectFlags() == lastProperty()->getObjectFlags();
}
inline const js::HeapValue *
JSObject::getRawSlots()
{
JS_ASSERT(isGlobal());
return slots;
}
inline js::Value
JSObject::getReservedSlot(uintN index) const
{
JS_ASSERT(index < JSSLOT_FREE(getClass()));
return getSlot(index);
}
inline js::HeapValue &
JSObject::getReservedSlotRef(uintN index)
{
JS_ASSERT(index < JSSLOT_FREE(getClass()));
return getSlotRef(index);
}
inline void
JSObject::setReservedSlot(uintN index, const js::Value &v)
{
JS_ASSERT(index < JSSLOT_FREE(getClass()));
setSlot(index, v);
}
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::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(slotInRange(start + count, SENTINEL_ALLOWED));
return (start + count <= numFixedSlots()) || (start >= numFixedSlots());
}
inline void
JSObject::prepareSlotRangeForOverwrite(size_t start, size_t end)
{
for (size_t i = start; i < end; i++)
getSlotAddressUnchecked(i)->js::HeapValue::~HeapValue();
}
inline void
JSObject::prepareElementRangeForOverwrite(size_t start, size_t end)
{
JS_ASSERT(isDenseArray());
JS_ASSERT(end <= getDenseArrayInitializedLength());
for (size_t i = start; i < end; i++)
elements[i].js::HeapValue::~HeapValue();
}
inline uint32_t
JSObject::getArrayLength() const
{
JS_ASSERT(isArray());
return getElementsHeader()->length;
}
inline void
JSObject::setArrayLength(JSContext *cx, uint32_t 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());
}
getElementsHeader()->length = length;
}
inline void
JSObject::setDenseArrayLength(uint32_t length)
{
/* Variant of setArrayLength for use on dense arrays where the length cannot overflow int32. */
JS_ASSERT(isDenseArray());
JS_ASSERT(length <= INT32_MAX);
getElementsHeader()->length = length;
}
inline uint32_t
JSObject::getDenseArrayInitializedLength()
{
JS_ASSERT(isDenseArray());
return getElementsHeader()->initializedLength;
}
inline void
JSObject::setDenseArrayInitializedLength(uint32_t length)
{
JS_ASSERT(isDenseArray());
JS_ASSERT(length <= getDenseArrayCapacity());
prepareElementRangeForOverwrite(length, getElementsHeader()->initializedLength);
getElementsHeader()->initializedLength = length;
}
inline uint32_t
JSObject::getDenseArrayCapacity()
{
JS_ASSERT(isDenseArray());
return getElementsHeader()->capacity;
}
inline bool
JSObject::ensureElements(JSContext *cx, uint32_t capacity)
{
if (capacity > getDenseArrayCapacity())
return growElements(cx, capacity);
return true;
}
inline js::HeapValueArray
JSObject::getDenseArrayElements()
{
JS_ASSERT(isDenseArray());
return js::HeapValueArray(elements);
}
inline const js::Value &
JSObject::getDenseArrayElement(uintN idx)
{
JS_ASSERT(isDenseArray() && idx < getDenseArrayInitializedLength());
return elements[idx];
}
inline void
JSObject::setDenseArrayElement(uintN idx, const js::Value &val)
{
JS_ASSERT(isDenseArray() && idx < getDenseArrayInitializedLength());
elements[idx] = val;
}
inline void
JSObject::initDenseArrayElement(uintN idx, const js::Value &val)
{
JS_ASSERT(isDenseArray() && idx < getDenseArrayInitializedLength());
elements[idx].init(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::initDenseArrayElementWithType(JSContext *cx, uintN idx, const js::Value &val)
{
js::types::AddTypePropertyId(cx, this, JSID_VOID, val);
initDenseArrayElement(idx, val);
}
inline void
JSObject::copyDenseArrayElements(uintN dstStart, const js::Value *src, uintN count)
{
JS_ASSERT(dstStart + count <= getDenseArrayCapacity());
for (unsigned i = 0; i < count; ++i)
elements[dstStart + i] = src[i];
}
inline void
JSObject::initDenseArrayElements(uintN dstStart, const js::Value *src, uintN count)
{
JS_ASSERT(dstStart + count <= getDenseArrayCapacity());
for (unsigned i = 0; i < count; ++i)
elements[dstStart + i].init(src[i]);
}
inline void
JSObject::moveDenseArrayElements(uintN dstStart, uintN srcStart, uintN count)
{
JS_ASSERT(dstStart + count <= getDenseArrayCapacity());
JS_ASSERT(srcStart + count <= getDenseArrayCapacity());
/*
* Use a custom write barrier here since it's performance sensitive. We
* only want to barrier the elements that are being overwritten.
*/
uintN markStart, markEnd;
if (dstStart > srcStart) {
markStart = js::Max(srcStart + count, dstStart);
markEnd = dstStart + count;
} else {
markStart = dstStart;
markEnd = js::Min(dstStart + count, srcStart);
}
prepareElementRangeForOverwrite(markStart, markEnd);
memmove(elements + dstStart, elements + srcStart, count * sizeof(js::Value));
}
inline bool
JSObject::denseArrayHasInlineSlots() const
{
JS_ASSERT(isDenseArray());
return elements == fixedElements();
}
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::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)
{
setFixedSlot(JSSLOT_WITH_THIS, js::ObjectValue(*thisp));
}
inline bool
JSObject::setSingletonType(JSContext *cx)
{
if (!cx->typeInferenceEnabled())
return true;
JS_ASSERT(!lastProperty()->previous());
JS_ASSERT(!hasLazyType());
JS_ASSERT_IF(getProto(), type() == getProto()->getNewType(cx, NULL));
js::types::TypeObject *type = cx->compartment->getLazyType(cx, getProto());
if (!type)
return false;
type_ = type;
return true;
}
inline js::types::TypeObject *
JSObject::getType(JSContext *cx)
{
if (hasLazyType())
makeLazyType(cx);
return type_;
}
inline bool
JSObject::clearType(JSContext *cx)
{
JS_ASSERT(!hasSingletonType());
js::types::TypeObject *type = cx->compartment->getEmptyType(cx);
if (!type)
return false;
type_ = type;
return true;
}
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 bool JSObject::setIteratedSingleton(JSContext *cx)
{
return setFlag(cx, js::BaseShape::ITERATED_SINGLETON);
}
inline bool JSObject::isSystem() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::SYSTEM);
}
inline bool JSObject::setSystem(JSContext *cx)
{
return setFlag(cx, js::BaseShape::SYSTEM);
}
inline bool JSObject::isDelegate() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::DELEGATE);
}
inline bool JSObject::setDelegate(JSContext *cx)
{
return setFlag(cx, js::BaseShape::DELEGATE, GENERATE_SHAPE);
}
inline bool JSObject::setIndexed(JSContext *cx)
{
return setFlag(cx, js::BaseShape::INDEXED);
}
inline bool JSObject::isVarObj() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::VAROBJ);
}
inline bool JSObject::setVarObj(JSContext *cx)
{
return setFlag(cx, js::BaseShape::VAROBJ);
}
inline bool JSObject::setWatched(JSContext *cx)
{
return setFlag(cx, js::BaseShape::WATCHED, GENERATE_SHAPE);
}
inline bool JSObject::hasUncacheableProto() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::UNCACHEABLE_PROTO);
}
inline bool JSObject::setUncacheableProto(JSContext *cx)
{
return setFlag(cx, js::BaseShape::UNCACHEABLE_PROTO, GENERATE_SHAPE);
}
inline bool JSObject::isExtensible() const
{
return !lastProperty()->hasObjectFlag(js::BaseShape::NOT_EXTENSIBLE);
}
inline bool JSObject::isBoundFunction() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::BOUND_FUNCTION);
}
inline bool JSObject::isIndexed() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::INDEXED);
}
inline bool JSObject::watched() const
{
return lastProperty()->hasObjectFlag(js::BaseShape::WATCHED);
}
inline bool JSObject::hasSpecialEquality() const
{
return !!getClass()->ext.equality;
}
inline bool JSObject::isArguments() const { return isNormalArguments() || isStrictArguments(); }
inline bool JSObject::isArrayBuffer() const { return hasClass(&js::ArrayBufferClass); }
inline bool JSObject::isNormalArguments() const { return hasClass(&js::NormalArgumentsObjectClass); }
inline bool JSObject::isStrictArguments() const { return hasClass(&js::StrictArgumentsObjectClass); }
inline bool JSObject::isNumber() const { return hasClass(&js::NumberClass); }
inline bool JSObject::isBoolean() const { return hasClass(&js::BooleanClass); }
inline bool JSObject::isString() const { return hasClass(&js::StringClass); }
inline bool JSObject::isPrimitive() const { return isNumber() || isString() || isBoolean(); }
inline bool JSObject::isDate() const { return hasClass(&js::DateClass); }
inline bool JSObject::isFunction() const { return hasClass(&js::FunctionClass); }
inline bool JSObject::isObject() const { return hasClass(&js::ObjectClass); }
inline bool JSObject::isWith() const { return hasClass(&js::WithClass); }
inline bool JSObject::isBlock() const { return hasClass(&js::BlockClass); }
inline bool JSObject::isStaticBlock() const { return isBlock() && !getProto(); }
inline bool JSObject::isClonedBlock() const { return isBlock() && !!getProto(); }
inline bool JSObject::isCall() const { return hasClass(&js::CallClass); }
inline bool JSObject::isDeclEnv() const { return hasClass(&js::DeclEnvClass); }
inline bool JSObject::isRegExp() const { return hasClass(&js::RegExpClass); }
inline bool JSObject::isScript() const { return hasClass(&js::ScriptClass); }
inline bool JSObject::isGenerator() const { return hasClass(&js::GeneratorClass); }
inline bool JSObject::isIterator() const { return hasClass(&js::IteratorClass); }
inline bool JSObject::isStopIteration() const { return hasClass(&js::StopIterationClass); }
inline bool JSObject::isError() const { return hasClass(&js::ErrorClass); }
inline bool JSObject::isXML() const { return hasClass(&js::XMLClass); }
inline bool JSObject::isNamespace() const { return hasClass(&js::NamespaceClass); }
inline bool JSObject::isWeakMap() const { return hasClass(&js::WeakMapClass); }
inline bool JSObject::isFunctionProxy() const { return hasClass(&js::FunctionProxyClass); }
inline bool JSObject::isArray() const
{
return isSlowArray() || isDenseArray();
}
inline bool JSObject::isDenseArray() const
{
bool result = hasClass(&js::ArrayClass);
JS_ASSERT_IF(result, elements != js::emptyObjectElements);
return result;
}
inline bool JSObject::isSlowArray() const
{
bool result = hasClass(&js::SlowArrayClass);
JS_ASSERT_IF(result, elements != js::emptyObjectElements);
return result;
}
inline bool
JSObject::isXMLId() const
{
return hasClass(&js::QNameClass)
|| hasClass(&js::AttributeNameClass)
|| hasClass(&js::AnyNameClass);
}
inline bool
JSObject::isQName() const
{
return hasClass(&js::QNameClass)
|| hasClass(&js::AttributeNameClass)
|| hasClass(&js::AnyNameClass);
}
inline void
JSObject::initializeSlotRange(size_t start, size_t length)
{
/*
* No bounds check, as this is used when the object's shape does not
* reflect its allocated slots (updateSlotsForSpan).
*/
JS_ASSERT(!isDenseArray());
size_t fixed = numFixedSlots();
if (start < fixed) {
if (start + length < fixed) {
js::InitValueRange(fixedSlots() + start, length, false);
} else {
size_t localClear = fixed - start;
js::InitValueRange(fixedSlots() + start, localClear, false);
js::InitValueRange(slots, length - localClear, false);
}
} else {
js::InitValueRange(slots + start - fixed, length, false);
}
}
/* static */ inline JSObject *
JSObject::create(JSContext *cx, js::gc::AllocKind kind,
js::Shape *shape, js::types::TypeObject *type, js::HeapValue *slots)
{
/*
* Callers must use dynamicSlotsCount to size the initial slot array of the
* object. We can't check the allocated capacity of the dynamic slots, but
* make sure their presence is consistent with the shape.
*/
JS_ASSERT(shape && type);
JS_ASSERT(!!dynamicSlotsCount(shape->numFixedSlots(), shape->slotSpan()) == !!slots);
JS_ASSERT(js::gc::GetGCKindSlots(kind, shape->getObjectClass()) == shape->numFixedSlots());
JSObject *obj = js_NewGCObject(cx, kind);
if (!obj)
return NULL;
obj->shape_.init(shape);
obj->type_.init(type);
obj->slots = slots;
obj->elements = js::emptyObjectElements;
if (shape->getObjectClass()->hasPrivate())
obj->privateRef(shape->numFixedSlots()) = NULL;
if (size_t span = shape->slotSpan())
obj->initializeSlotRange(0, span);
return obj;
}
/* static */ inline JSObject *
JSObject::createDenseArray(JSContext *cx, js::gc::AllocKind kind,
js::Shape *shape, js::types::TypeObject *type, uint32_t length)
{
JS_ASSERT(shape && type);
JS_ASSERT(shape->getObjectClass() == &js::ArrayClass);
/*
* Dense arrays are non-native, and never have properties to store.
* The number of fixed slots in the shape of such objects is zero.
*/
JS_ASSERT(shape->numFixedSlots() == 0);
/*
* The array initially stores its elements inline, there must be enough
* space for an elements header.
*/
JS_ASSERT(js::gc::GetGCKindSlots(kind) >= js::ObjectElements::VALUES_PER_HEADER);
uint32_t capacity = js::gc::GetGCKindSlots(kind) - js::ObjectElements::VALUES_PER_HEADER;
JSObject *obj = js_NewGCObject(cx, kind);
if (!obj)
return NULL;
obj->shape_.init(shape);
obj->type_.init(type);
obj->slots = NULL;
obj->setFixedElements();
new (obj->getElementsHeader()) js::ObjectElements(capacity, length);
return obj;
}
inline void
JSObject::finish(JSContext *cx)
{
if (hasDynamicSlots())
cx->free_(slots);
if (hasDynamicElements())
cx->free_(getElementsHeader());
}
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_t
JSObject::slotSpan() const
{
if (inDictionaryMode())
return lastProperty()->base()->slotSpan();
return lastProperty()->slotSpan();
}
inline bool
JSObject::containsSlot(uint32_t slot) const
{
return slot < slotSpan();
}
inline js::HeapValue &
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 JSFunction *
JSObject::nativeGetMethod(const js::Shape *shape) const
{
/*
* For method shapes, this object must have an uncloned function object in
* the shape's slot.
*/
JS_ASSERT(shape->isMethod());
#ifdef DEBUG
JSObject *obj = &nativeGetSlot(shape->slot()).toObject();
JS_ASSERT(obj->isFunction() && !obj->toFunction()->isClonedMethod());
#endif
return static_cast<JSFunction *>(&nativeGetSlot(shape->slot()).toObject());
}
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 lastProperty()->isNative();
}
inline js::Shape **
JSObject::nativeSearch(JSContext *cx, jsid id, bool adding)
{
return js::Shape::search(cx, &shape_, 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 bool
JSObject::nativeEmpty() const
{
return lastProperty()->isEmptyShape();
}
inline bool
JSObject::inDictionaryMode() const
{
return lastProperty()->inDictionary();
}
inline uint32_t
JSObject::propertyCount() const
{
return lastProperty()->entryCount();
}
inline bool
JSObject::hasPropertyTable() const
{
return lastProperty()->hasTable();
}
inline size_t
JSObject::structSize() const
{
return arenaHeader()->getThingSize();
}
inline size_t
JSObject::slotsAndStructSize() const
{
return structSize() + dynamicSlotSize(NULL);
}
inline size_t
JSObject::dynamicSlotSize(JSMallocSizeOfFun mallocSizeOf) const
{
size_t size = 0;
if (hasDynamicSlots()) {
size_t bytes = numDynamicSlots() * sizeof(js::Value);
size += mallocSizeOf ? mallocSizeOf(slots, bytes) : bytes;
}
if (hasDynamicElements()) {
size_t bytes =
(js::ObjectElements::VALUES_PER_HEADER +
getElementsHeader()->capacity) * sizeof(js::Value);
size += mallocSizeOf ? mallocSizeOf(getElementsHeader(), bytes) : bytes;
}
return size;
}
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_t 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_t 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_t 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_t index, js::Value *vp)
{
return getElement(cx, this, index, vp);
}
inline JSBool
JSObject::getElementIfPresent(JSContext *cx, JSObject *receiver, uint32_t 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_t 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);
}
inline js::GlobalObject *
JSObject::getGlobal() const
{
JSObject *obj = const_cast<JSObject *>(this);
while (JSObject *parent = obj->getParent())
obj = parent;
return obj->asGlobal();
}
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 {
inline void
OBJ_TO_INNER_OBJECT(JSContext *cx, JSObject *&obj)
{
if (JSObjectOp op = obj->getClass()->ext.innerObject)
obj = op(cx, obj);
}
inline void
OBJ_TO_OUTER_OBJECT(JSContext *cx, JSObject *&obj)
{
if (JSObjectOp op = obj->getClass()->ext.outerObject)
obj = op(cx, obj);
}
/*
* Methods to test whether an object or a value is of type "xml" (per typeof).
*/
#define VALUE_IS_XML(v) (!JSVAL_IS_PRIMITIVE(v) && JSVAL_TO_OBJECT(v)->isXML())
static inline bool
IsXML(const js::Value &v)
{
return v.isObject() && v.toObject().isXML();
}
static inline bool
IsStopIteration(const js::Value &v)
{
return v.isObject() && v.toObject().isStopIteration();
}
/* ES5 9.1 ToPrimitive(input). */
static JS_ALWAYS_INLINE bool
ToPrimitive(JSContext *cx, Value *vp)
{
if (vp->isPrimitive())
return true;
return vp->toObject().defaultValue(cx, JSTYPE_VOID, vp);
}
/* ES5 9.1 ToPrimitive(input, PreferredType). */
static JS_ALWAYS_INLINE bool
ToPrimitive(JSContext *cx, JSType preferredType, Value *vp)
{
JS_ASSERT(preferredType != JSTYPE_VOID); /* Use the other ToPrimitive! */
if (vp->isPrimitive())
return true;
return vp->toObject().defaultValue(cx, preferredType, vp);
}
/*
* Return true if this is a compiler-created internal function accessed by
* its own object. Such a function object must not be accessible to script
* or embedding code.
*/
inline bool
IsInternalFunctionObject(JSObject *funobj)
{
JSFunction *fun = funobj->toFunction();
return (fun->flags & JSFUN_LAMBDA) && !funobj->getParent();
}
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);
};
inline bool
NewObjectCache::lookup(Class *clasp, gc::Cell *key, gc::AllocKind kind, EntryIndex *pentry)
{
jsuword hash = (jsuword(clasp) ^ jsuword(key)) + kind;
*pentry = hash % js::ArrayLength(entries);
Entry *entry = &entries[*pentry];
/* N.B. Lookups with the same clasp/key but different kinds map to different entries. */
return (entry->clasp == clasp && entry->key == key);
}
inline bool
NewObjectCache::lookupProto(Class *clasp, JSObject *proto, gc::AllocKind kind, EntryIndex *pentry)
{
JS_ASSERT(!proto->isGlobal());
return lookup(clasp, proto, kind, pentry);
}
inline bool
NewObjectCache::lookupGlobal(Class *clasp, js::GlobalObject *global, gc::AllocKind kind, EntryIndex *pentry)
{
return lookup(clasp, global, kind, pentry);
}
inline bool
NewObjectCache::lookupType(Class *clasp, js::types::TypeObject *type, gc::AllocKind kind, EntryIndex *pentry)
{
return lookup(clasp, type, kind, pentry);
}
inline void
NewObjectCache::fill(EntryIndex entry_, Class *clasp, gc::Cell *key, gc::AllocKind kind, JSObject *obj)
{
JS_ASSERT(unsigned(entry_) < ArrayLength(entries));
Entry *entry = &entries[entry_];
JS_ASSERT(!obj->hasDynamicSlots() && !obj->hasDynamicElements());
entry->clasp = clasp;
entry->key = key;
entry->kind = kind;
entry->nbytes = obj->structSize();
memcpy(&entry->templateObject, obj, entry->nbytes);
}
inline void
NewObjectCache::fillProto(EntryIndex entry, Class *clasp, JSObject *proto, gc::AllocKind kind, JSObject *obj)
{
JS_ASSERT(!proto->isGlobal());
JS_ASSERT(obj->getProto() == proto);
return fill(entry, clasp, proto, kind, obj);
}
inline void
NewObjectCache::fillGlobal(EntryIndex entry, Class *clasp, js::GlobalObject *global, gc::AllocKind kind, JSObject *obj)
{
//JS_ASSERT(global == obj->getGlobal());
return fill(entry, clasp, global, kind, obj);
}
inline void
NewObjectCache::fillType(EntryIndex entry, Class *clasp, js::types::TypeObject *type, gc::AllocKind kind, JSObject *obj)
{
JS_ASSERT(obj->type() == type);
return fill(entry, clasp, type, kind, obj);
}
inline JSObject *
NewObjectCache::newObjectFromHit(JSContext *cx, EntryIndex entry_)
{
JS_ASSERT(unsigned(entry_) < ArrayLength(entries));
Entry *entry = &entries[entry_];
JSObject *obj = js_TryNewGCObject(cx, entry->kind);
if (obj) {
memcpy(obj, &entry->templateObject, entry->nbytes);
Probes::createObject(cx, obj);
return obj;
}
/* Copy the entry to the stack first in case it is purged by a GC. */
size_t nbytes = entry->nbytes;
JSObject_Slots16 stackObject;
memcpy(&stackObject, &entry->templateObject, nbytes);
obj = js_NewGCObject(cx, entry->kind);
if (obj) {
memcpy(obj, &stackObject, nbytes);
Probes::createObject(cx, obj);
return obj;
}
return NULL;
}
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)
return true;
#endif
return false;
}
/*
* Make an object with the specified prototype. If parent is null, it will
* default to the prototype's global if the prototype is non-null.
*/
JSObject *
NewObjectWithGivenProto(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent,
gc::AllocKind kind);
inline JSObject *
NewObjectWithGivenProto(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent)
{
gc::AllocKind kind = gc::GetGCObjectKind(clasp);
return NewObjectWithGivenProto(cx, clasp, proto, parent, kind);
}
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;
}
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;
}
/*
* Make an object with the prototype set according to the specified prototype or class:
*
* if proto is non-null:
* use the specified proto
* 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.
*
* The class prototype will be fetched from the parent's global. If global is
* null, the context's active global will be used, and the resulting object's
* parent will be that global.
*/
JSObject *
NewObjectWithClassProto(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent,
gc::AllocKind kind);
inline JSObject *
NewObjectWithClassProto(JSContext *cx, js::Class *clasp, JSObject *proto, JSObject *parent)
{
gc::AllocKind kind = gc::GetGCObjectKind(clasp);
return NewObjectWithClassProto(cx, clasp, proto, parent, kind);
}
/*
* Create a native instance of the given class with parent and proto set
* according to the context's active global.
*/
inline JSObject *
NewBuiltinClassInstance(JSContext *cx, Class *clasp, gc::AllocKind kind)
{
return NewObjectWithClassProto(cx, clasp, NULL, NULL, kind);
}
inline JSObject *
NewBuiltinClassInstance(JSContext *cx, Class *clasp)
{
gc::AllocKind kind = gc::GetGCObjectKind(clasp);
return NewBuiltinClassInstance(cx, clasp, 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);
/*
* Create a plain object with the specified type. This bypasses getNewType to
* avoid losing creation site information for objects made by scripted 'new'.
*/
JSObject *
NewObjectWithType(JSContext *cx, types::TypeObject *type, JSObject *parent, gc::AllocKind kind);
/* 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)
return NULL;
obj->setType(type);
if (!obj->setLastProperty(cx, baseobj->lastProperty()))
return NULL;
return obj;
}
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)
{
if (numSlots)
return gc::GetGCObjectKind(numSlots);
return gc::FINALIZE_OBJECT4;
}
static inline gc::AllocKind
GuessArrayGCKind(size_t numSlots)
{
if (numSlots)
return gc::GetGCArrayKind(numSlots);
return gc::FINALIZE_OBJECT8;
}
/*
* 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;
}
/*
* Fill slots with the initial slot array to use for a newborn object which
* may or may not need dynamic slots.
*/
inline bool
PreallocateObjectDynamicSlots(JSContext *cx, Shape *shape, HeapValue **slots)
{
if (size_t count = JSObject::dynamicSlotsCount(shape->numFixedSlots(), shape->slotSpan())) {
*slots = (HeapValue *) cx->malloc_(count * sizeof(HeapValue));
if (!*slots)
return false;
Debug_SetValueRangeToCrashOnTouch(*slots, count);
return true;
}
*slots = NULL;
return true;
}
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;
}
JSObject *
DefineConstructorAndPrototype(JSContext *cx, JSObject *obj, JSProtoKey key, JSAtom *atom,
JSObject *protoProto, Class *clasp,
Native constructor, uintN nargs,
JSPropertySpec *ps, JSFunctionSpec *fs,
JSPropertySpec *static_ps, JSFunctionSpec *static_fs,
JSObject **ctorp = NULL,
gc::AllocKind ctorKind = JSFunction::FinalizeKind);
} /* namespace js */
extern JSObject *
js_InitClass(JSContext *cx, JSObject *obj, JSObject *parent_proto,
js::Class *clasp, JSNative constructor, uintN nargs,
JSPropertySpec *ps, JSFunctionSpec *fs,
JSPropertySpec *static_ps, JSFunctionSpec *static_fs,
JSObject **ctorp = NULL,
js::gc::AllocKind ctorKind = JSFunction::FinalizeKind);
inline JSObject *
js_GetProtoIfDenseArray(JSObject *obj)
{
return obj->isDenseArray() ? obj->getProto() : obj;
}
/*
* js_PurgeScopeChain does nothing if obj is not itself a prototype or parent
* scope, else it reshapes the scope and prototype chains it links. It calls
* js_PurgeScopeChainHelper, which asserts that obj is flagged as a delegate
* (i.e., obj has ever been on a prototype or parent chain).
*/
extern bool
js_PurgeScopeChainHelper(JSContext *cx, JSObject *obj, jsid id);
inline bool
js_PurgeScopeChain(JSContext *cx, JSObject *obj, jsid id)
{
if (obj->isDelegate())
return js_PurgeScopeChainHelper(cx, obj, id);
return true;
}
inline void
JSObject::setSlot(uintN slot, const js::Value &value)
{
JS_ASSERT(slotInRange(slot));
getSlotRef(slot).set(compartment(), value);
}
inline void
JSObject::initSlot(uintN slot, const js::Value &value)
{
JS_ASSERT(getSlot(slot).isUndefined() || getSlot(slot).isMagic(JS_ARRAY_HOLE));
JS_ASSERT(slotInRange(slot));
initSlotUnchecked(slot, value);
}
inline void
JSObject::initSlotUnchecked(uintN slot, const js::Value &value)
{
getSlotAddressUnchecked(slot)->init(value);
}
inline void
JSObject::setFixedSlot(uintN slot, const js::Value &value)
{
JS_ASSERT(slot < numFixedSlots());
fixedSlots()[slot] = value;
}
inline void
JSObject::initFixedSlot(uintN slot, const js::Value &value)
{
JS_ASSERT(slot < numFixedSlots());
fixedSlots()[slot].init(value);
}
inline void
JSObject::privateWriteBarrierPre(void **old)
{
#ifdef JSGC_INCREMENTAL
JSCompartment *comp = compartment();
if (comp->needsBarrier()) {
if (*old && getClass()->trace)
getClass()->trace(comp->barrierTracer(), this);
}
#endif
}
inline void
JSObject::privateWriteBarrierPost(void **old)
{
}
inline void
JSObject::writeBarrierPre(JSObject *obj)
{
#ifdef JSGC_INCREMENTAL
/*
* This would normally be a null test, but TypeScript::global uses 0x1 as a
* special value.
*/
if (uintptr_t(obj) < 32)
return;
JSCompartment *comp = obj->compartment();
if (comp->needsBarrier()) {
JS_ASSERT(!comp->rt->gcRunning);
MarkObjectUnbarriered(comp->barrierTracer(), obj, "write barrier");
}
#endif
}
inline void
JSObject::writeBarrierPost(JSObject *obj, void *addr)
{
}
#endif /* jsobjinlines_h___ */
