--- /dev/null
+/*
+ * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "SparseArrayValueMap.h"
+
+#include "ClassInfo.h"
+#include "GetterSetter.h"
+#include "JSObject.h"
+#include "Operations.h"
+#include "PropertySlot.h"
+#include "Reject.h"
+#include "SlotVisitor.h"
+#include "Structure.h"
+
+namespace JSC {
+
+const ClassInfo SparseArrayValueMap::s_info = { "SparseArrayValueMap", 0, 0, 0, CREATE_METHOD_TABLE(SparseArrayValueMap) };
+
+SparseArrayValueMap::SparseArrayValueMap(VM& vm)
+ : Base(vm, vm.sparseArrayValueMapStructure.get())
+ , m_flags(Normal)
+ , m_reportedCapacity(0)
+{
+}
+
+SparseArrayValueMap::~SparseArrayValueMap()
+{
+}
+
+void SparseArrayValueMap::finishCreation(VM& vm)
+{
+ Base::finishCreation(vm);
+}
+
+SparseArrayValueMap* SparseArrayValueMap::create(VM& vm)
+{
+ SparseArrayValueMap* result = new (NotNull, allocateCell<SparseArrayValueMap>(vm.heap)) SparseArrayValueMap(vm);
+ result->finishCreation(vm);
+ return result;
+}
+
+void SparseArrayValueMap::destroy(JSCell* cell)
+{
+ static_cast<SparseArrayValueMap*>(cell)->SparseArrayValueMap::~SparseArrayValueMap();
+}
+
+Structure* SparseArrayValueMap::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+{
+ return Structure::create(vm, globalObject, prototype, TypeInfo(CompoundType, StructureFlags), &s_info);
+}
+
+SparseArrayValueMap::AddResult SparseArrayValueMap::add(JSObject* array, unsigned i)
+{
+ SparseArrayEntry entry;
+ entry.setWithoutWriteBarrier(jsUndefined());
+
+ AddResult result = m_map.add(i, entry);
+ size_t capacity = m_map.capacity();
+ if (capacity != m_reportedCapacity) {
+ Heap::heap(array)->reportExtraMemoryCost((capacity - m_reportedCapacity) * (sizeof(unsigned) + sizeof(WriteBarrier<Unknown>)));
+ m_reportedCapacity = capacity;
+ }
+ return result;
+}
+
+void SparseArrayValueMap::putEntry(ExecState* exec, JSObject* array, unsigned i, JSValue value, bool shouldThrow)
+{
+ AddResult result = add(array, i);
+ SparseArrayEntry& entry = result.iterator->value;
+
+ // To save a separate find & add, we first always add to the sparse map.
+ // In the uncommon case that this is a new property, and the array is not
+ // extensible, this is not the right thing to have done - so remove again.
+ if (result.isNewEntry && !array->isExtensible()) {
+ remove(result.iterator);
+ if (shouldThrow)
+ throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+ return;
+ }
+
+ entry.put(exec, array, this, value, shouldThrow);
+}
+
+bool SparseArrayValueMap::putDirect(ExecState* exec, JSObject* array, unsigned i, JSValue value, unsigned attributes, PutDirectIndexMode mode)
+{
+ AddResult result = add(array, i);
+ SparseArrayEntry& entry = result.iterator->value;
+
+ // To save a separate find & add, we first always add to the sparse map.
+ // In the uncommon case that this is a new property, and the array is not
+ // extensible, this is not the right thing to have done - so remove again.
+ if (mode != PutDirectIndexLikePutDirect && result.isNewEntry && !array->isExtensible()) {
+ remove(result.iterator);
+ return reject(exec, mode == PutDirectIndexShouldThrow, "Attempting to define property on object that is not extensible.");
+ }
+
+ entry.attributes = attributes;
+ entry.set(exec->vm(), this, value);
+ return true;
+}
+
+void SparseArrayEntry::get(PropertySlot& slot) const
+{
+ JSValue value = Base::get();
+ ASSERT(value);
+
+ if (LIKELY(!value.isGetterSetter())) {
+ slot.setValue(value);
+ return;
+ }
+
+ JSObject* getter = asGetterSetter(value)->getter();
+ if (!getter) {
+ slot.setUndefined();
+ return;
+ }
+
+ slot.setGetterSlot(getter);
+}
+
+void SparseArrayEntry::get(PropertyDescriptor& descriptor) const
+{
+ descriptor.setDescriptor(Base::get(), attributes);
+}
+
+JSValue SparseArrayEntry::get(ExecState* exec, JSObject* array) const
+{
+ JSValue result = Base::get();
+ ASSERT(result);
+
+ if (LIKELY(!result.isGetterSetter()))
+ return result;
+
+ JSObject* getter = asGetterSetter(result)->getter();
+ if (!getter)
+ return jsUndefined();
+
+ CallData callData;
+ CallType callType = getter->methodTable()->getCallData(getter, callData);
+ return call(exec, getter, callType, callData, array->methodTable()->toThisObject(array, exec), exec->emptyList());
+}
+
+void SparseArrayEntry::put(ExecState* exec, JSValue thisValue, SparseArrayValueMap* map, JSValue value, bool shouldThrow)
+{
+ if (!(attributes & Accessor)) {
+ if (attributes & ReadOnly) {
+ if (shouldThrow)
+ throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+ return;
+ }
+
+ set(exec->vm(), map, value);
+ return;
+ }
+
+ JSValue accessor = Base::get();
+ ASSERT(accessor.isGetterSetter());
+ JSObject* setter = asGetterSetter(accessor)->setter();
+
+ if (!setter) {
+ if (shouldThrow)
+ throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+ return;
+ }
+
+ CallData callData;
+ CallType callType = setter->methodTable()->getCallData(setter, callData);
+ MarkedArgumentBuffer args;
+ args.append(value);
+ if (thisValue.isObject())
+ thisValue = asObject(thisValue)->methodTable()->toThisObject(asObject(thisValue), exec);
+ call(exec, setter, callType, callData, thisValue, args);
+}
+
+JSValue SparseArrayEntry::getNonSparseMode() const
+{
+ ASSERT(!attributes);
+ return Base::get();
+}
+
+void SparseArrayValueMap::visitChildren(JSCell* thisObject, SlotVisitor& visitor)
+{
+ Base::visitChildren(thisObject, visitor);
+
+ SparseArrayValueMap* thisMap = jsCast<SparseArrayValueMap*>(thisObject);
+ iterator end = thisMap->m_map.end();
+ for (iterator it = thisMap->m_map.begin(); it != end; ++it)
+ visitor.append(&it->value);
+}
+
+} // namespace JSC
+
projects / apple / javascriptcore.git / blobdiff