/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
- * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2007 Eric Seidel (eric@webkit.org)
*
* This library is free software; you can redistribute it and/or
#include "JSGlobalObject.h"
#include "NativeErrorConstructor.h"
#include "ObjectPrototype.h"
+#include "PropertyDescriptor.h"
#include "PropertyNameArray.h"
#include "Lookup.h"
#include "Nodes.h"
#include <math.h>
#include <wtf/Assertions.h>
-#define JSOBJECT_MARK_TRACING 0
-
-#if JSOBJECT_MARK_TRACING
-
-#define JSOBJECT_MARK_BEGIN() \
- static int markStackDepth = 0; \
- for (int i = 0; i < markStackDepth; i++) \
- putchar('-'); \
- printf("%s (%p)\n", className().UTF8String().c_str(), this); \
- markStackDepth++; \
-
-#define JSOBJECT_MARK_END() \
- markStackDepth--;
-
-#else // JSOBJECT_MARK_TRACING
-
-#define JSOBJECT_MARK_BEGIN()
-#define JSOBJECT_MARK_END()
-
-#endif // JSOBJECT_MARK_TRACING
-
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(JSObject);
-void JSObject::mark()
-{
- JSOBJECT_MARK_BEGIN();
-
- JSCell::mark();
- m_structure->mark();
+static inline void getClassPropertyNames(ExecState* exec, const ClassInfo* classInfo, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+ // Add properties from the static hashtables of properties
+ for (; classInfo; classInfo = classInfo->parentClass) {
+ const HashTable* table = classInfo->propHashTable(exec);
+ if (!table)
+ continue;
+ table->initializeIfNeeded(exec);
+ ASSERT(table->table);
+
+ int hashSizeMask = table->compactSize - 1;
+ const HashEntry* entry = table->table;
+ for (int i = 0; i <= hashSizeMask; ++i, ++entry) {
+ if (entry->key() && (!(entry->attributes() & DontEnum) || (mode == IncludeDontEnumProperties)))
+ propertyNames.add(entry->key());
+ }
+ }
+}
- PropertyStorage storage = propertyStorage();
+void JSObject::markChildren(MarkStack& markStack)
+{
+#ifndef NDEBUG
+ bool wasCheckingForDefaultMarkViolation = markStack.m_isCheckingForDefaultMarkViolation;
+ markStack.m_isCheckingForDefaultMarkViolation = false;
+#endif
- size_t storageSize = m_structure->propertyStorageSize();
- for (size_t i = 0; i < storageSize; ++i) {
- JSValue v = JSValue::decode(storage[i]);
- if (!v.marked())
- v.mark();
- }
+ markChildrenDirect(markStack);
- JSOBJECT_MARK_END();
+#ifndef NDEBUG
+ markStack.m_isCheckingForDefaultMarkViolation = wasCheckingForDefaultMarkViolation;
+#endif
}
UString JSObject::className() const
return 0;
}
-void JSObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunction)
+void JSObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunction, unsigned attributes)
{
JSValue object = getDirect(propertyName);
if (object && object.isGetterSetter()) {
}
PutPropertySlot slot;
- GetterSetter* getterSetter = new (exec) GetterSetter;
- putDirectInternal(exec->globalData(), propertyName, getterSetter, Getter, true, slot);
+ GetterSetter* getterSetter = new (exec) GetterSetter(exec);
+ putDirectInternal(exec->globalData(), propertyName, getterSetter, attributes | Getter, true, slot);
// putDirect will change our Structure if we add a new property. For
// getters and setters, though, we also need to change our Structure
getterSetter->setGetter(getterFunction);
}
-void JSObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunction)
+void JSObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunction, unsigned attributes)
{
JSValue object = getDirect(propertyName);
if (object && object.isGetterSetter()) {
}
PutPropertySlot slot;
- GetterSetter* getterSetter = new (exec) GetterSetter;
- putDirectInternal(exec->globalData(), propertyName, getterSetter, Setter, true, slot);
+ GetterSetter* getterSetter = new (exec) GetterSetter(exec);
+ putDirectInternal(exec->globalData(), propertyName, getterSetter, attributes | Setter, true, slot);
// putDirect will change our Structure if we add a new property. For
// getters and setters, though, we also need to change our Structure
bool JSObject::propertyIsEnumerable(ExecState* exec, const Identifier& propertyName) const
{
- unsigned attributes;
- if (!getPropertyAttributes(exec, propertyName, attributes))
+ PropertyDescriptor descriptor;
+ if (!const_cast<JSObject*>(this)->getOwnPropertyDescriptor(exec, propertyName, descriptor))
return false;
- return !(attributes & DontEnum);
-}
-
-bool JSObject::getPropertyAttributes(ExecState* exec, const Identifier& propertyName, unsigned& attributes) const
-{
- JSCell* specificValue;
- if (m_structure->get(propertyName, attributes, specificValue) != WTF::notFound)
- return true;
-
- // Look in the static hashtable of properties
- const HashEntry* entry = findPropertyHashEntry(exec, propertyName);
- if (entry) {
- attributes = entry->attributes();
- return true;
- }
-
- return false;
+ return descriptor.enumerable();
}
bool JSObject::getPropertySpecificValue(ExecState*, const Identifier& propertyName, JSCell*& specificValue) const
return false;
}
-void JSObject::getPropertyNames(ExecState* exec, PropertyNameArray& propertyNames)
+void JSObject::getPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
- m_structure->getEnumerablePropertyNames(exec, propertyNames, this);
+ getOwnPropertyNames(exec, propertyNames, mode);
+
+ if (prototype().isNull())
+ return;
+
+ JSObject* prototype = asObject(this->prototype());
+ while(1) {
+ if (prototype->structure()->typeInfo().overridesGetPropertyNames()) {
+ prototype->getPropertyNames(exec, propertyNames, mode);
+ break;
+ }
+ prototype->getOwnPropertyNames(exec, propertyNames, mode);
+ JSValue nextProto = prototype->prototype();
+ if (nextProto.isNull())
+ break;
+ prototype = asObject(nextProto);
+ }
+}
+
+void JSObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+ m_structure->getPropertyNames(propertyNames, mode);
+ getClassPropertyNames(exec, classInfo(), propertyNames, mode);
}
bool JSObject::toBoolean(ExecState*) const
void JSObject::putDirectFunction(ExecState* exec, InternalFunction* function, unsigned attr)
{
- putDirectFunction(Identifier(exec, function->name(&exec->globalData())), function, attr);
+ putDirectFunction(Identifier(exec, function->name(exec)), function, attr);
}
void JSObject::putDirectFunctionWithoutTransition(ExecState* exec, InternalFunction* function, unsigned attr)
{
- putDirectFunctionWithoutTransition(Identifier(exec, function->name(&exec->globalData())), function, attr);
+ putDirectFunctionWithoutTransition(Identifier(exec, function->name(exec)), function, attr);
}
NEVER_INLINE void JSObject::fillGetterPropertySlot(PropertySlot& slot, JSValue* location)
{
- if (JSObject* getterFunction = asGetterSetter(*location)->getter())
- slot.setGetterSlot(getterFunction);
- else
+ if (JSObject* getterFunction = asGetterSetter(*location)->getter()) {
+ if (!structure()->isDictionary())
+ slot.setCacheableGetterSlot(this, getterFunction, offsetForLocation(location));
+ else
+ slot.setGetterSlot(getterFunction);
+ } else
slot.setUndefined();
}
allocatePropertyStorageInline(oldSize, newSize);
}
-JSObject* constructEmptyObject(ExecState* exec)
+bool JSObject::getOwnPropertyDescriptor(ExecState*, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
- return new (exec) JSObject(exec->lexicalGlobalObject()->emptyObjectStructure());
+ unsigned attributes = 0;
+ JSCell* cell = 0;
+ size_t offset = m_structure->get(propertyName, attributes, cell);
+ if (offset == WTF::notFound)
+ return false;
+ descriptor.setDescriptor(getDirectOffset(offset), attributes);
+ return true;
+}
+
+bool JSObject::getPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+ JSObject* object = this;
+ while (true) {
+ if (object->getOwnPropertyDescriptor(exec, propertyName, descriptor))
+ return true;
+ JSValue prototype = object->prototype();
+ if (!prototype.isObject())
+ return false;
+ object = asObject(prototype);
+ }
+}
+
+static bool putDescriptor(ExecState* exec, JSObject* target, const Identifier& propertyName, PropertyDescriptor& descriptor, unsigned attributes, JSValue oldValue)
+{
+ if (descriptor.isGenericDescriptor() || descriptor.isDataDescriptor()) {
+ target->putWithAttributes(exec, propertyName, descriptor.value() ? descriptor.value() : oldValue, attributes & ~(Getter | Setter));
+ return true;
+ }
+ attributes &= ~ReadOnly;
+ if (descriptor.getter() && descriptor.getter().isObject())
+ target->defineGetter(exec, propertyName, asObject(descriptor.getter()), attributes);
+ if (exec->hadException())
+ return false;
+ if (descriptor.setter() && descriptor.setter().isObject())
+ target->defineSetter(exec, propertyName, asObject(descriptor.setter()), attributes);
+ return !exec->hadException();
+}
+
+bool JSObject::defineOwnProperty(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor, bool throwException)
+{
+ // If we have a new property we can just put it on normally
+ PropertyDescriptor current;
+ if (!getOwnPropertyDescriptor(exec, propertyName, current))
+ return putDescriptor(exec, this, propertyName, descriptor, descriptor.attributes(), jsUndefined());
+
+ if (descriptor.isEmpty())
+ return true;
+
+ if (current.equalTo(exec, descriptor))
+ return true;
+
+ // Filter out invalid changes
+ if (!current.configurable()) {
+ if (descriptor.configurable()) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to configurable attribute of unconfigurable property.");
+ return false;
+ }
+ if (descriptor.enumerablePresent() && descriptor.enumerable() != current.enumerable()) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to change enumerable attribute of unconfigurable property.");
+ return false;
+ }
+ }
+
+ // A generic descriptor is simply changing the attributes of an existing property
+ if (descriptor.isGenericDescriptor()) {
+ if (!current.attributesEqual(descriptor)) {
+ deleteProperty(exec, propertyName);
+ putDescriptor(exec, this, propertyName, descriptor, current.attributesWithOverride(descriptor), current.value());
+ }
+ return true;
+ }
+
+ // Changing between a normal property or an accessor property
+ if (descriptor.isDataDescriptor() != current.isDataDescriptor()) {
+ if (!current.configurable()) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to change access mechanism for an unconfigurable property.");
+ return false;
+ }
+ deleteProperty(exec, propertyName);
+ return putDescriptor(exec, this, propertyName, descriptor, current.attributesWithOverride(descriptor), current.value() ? current.value() : jsUndefined());
+ }
+
+ // Changing the value and attributes of an existing property
+ if (descriptor.isDataDescriptor()) {
+ if (!current.configurable()) {
+ if (!current.writable() && descriptor.writable()) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to change writable attribute of unconfigurable property.");
+ return false;
+ }
+ if (!current.writable()) {
+ if (descriptor.value() || !JSValue::strictEqual(exec, current.value(), descriptor.value())) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to change value of a readonly property.");
+ return false;
+ }
+ }
+ } else if (current.attributesEqual(descriptor)) {
+ if (!descriptor.value())
+ return true;
+ PutPropertySlot slot;
+ put(exec, propertyName, descriptor.value(), slot);
+ if (exec->hadException())
+ return false;
+ return true;
+ }
+ deleteProperty(exec, propertyName);
+ return putDescriptor(exec, this, propertyName, descriptor, current.attributesWithOverride(descriptor), current.value());
+ }
+
+ // Changing the accessor functions of an existing accessor property
+ ASSERT(descriptor.isAccessorDescriptor());
+ if (!current.configurable()) {
+ if (descriptor.setterPresent() && !(current.setter() && JSValue::strictEqual(exec, current.setter(), descriptor.setter()))) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to change the setter of an unconfigurable property.");
+ return false;
+ }
+ if (descriptor.getterPresent() && !(current.getter() && JSValue::strictEqual(exec, current.getter(), descriptor.getter()))) {
+ if (throwException)
+ throwError(exec, TypeError, "Attempting to change the getter of an unconfigurable property.");
+ return false;
+ }
+ }
+ JSValue accessor = getDirect(propertyName);
+ if (!accessor)
+ return false;
+ GetterSetter* getterSetter = asGetterSetter(accessor);
+ if (current.attributesEqual(descriptor)) {
+ if (descriptor.setter())
+ getterSetter->setSetter(asObject(descriptor.setter()));
+ if (descriptor.getter())
+ getterSetter->setGetter(asObject(descriptor.getter()));
+ return true;
+ }
+ deleteProperty(exec, propertyName);
+ unsigned attrs = current.attributesWithOverride(descriptor);
+ if (descriptor.setter())
+ attrs |= Setter;
+ if (descriptor.getter())
+ attrs |= Getter;
+ putDirect(propertyName, getterSetter, attrs);
+ return true;
}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff