ObjectInitializationScope.cpp [plain text]
#include "config.h"
#include "ObjectInitializationScope.h"
#include "JSCInlines.h"
#include "JSObject.h"
#include "Operations.h"
namespace JSC {
#ifndef NDEBUG
ObjectInitializationScope::ObjectInitializationScope(VM& vm)
: m_vm(vm)
, m_disallowGC(false)
, m_disallowVMReentry(false)
{
}
ObjectInitializationScope::~ObjectInitializationScope()
{
if (!m_object)
return;
verifyPropertiesAreInitialized(m_object);
}
void ObjectInitializationScope::notifyAllocated(JSObject* object, bool wasCreatedUninitialized)
{
if (wasCreatedUninitialized) {
m_disallowGC.enable();
m_disallowVMReentry.enable();
m_object = object;
} else
verifyPropertiesAreInitialized(object);
}
void ObjectInitializationScope::verifyPropertiesAreInitialized(JSObject* object)
{
Butterfly* butterfly = object->butterfly();
IndexingType indexingType = object->structure(m_vm)->indexingType();
unsigned vectorLength = butterfly->vectorLength();
if (UNLIKELY(hasUndecided(indexingType))) {
} else if (LIKELY(!hasAnyArrayStorage(indexingType))) {
auto data = butterfly->contiguous().data();
for (unsigned i = 0; i < vectorLength; ++i) {
if (isScribbledValue(data[i].get())) {
dataLog("Found scribbled value at i = ", i, "\n");
ASSERT_NOT_REACHED();
}
}
} else {
ArrayStorage* storage = butterfly->arrayStorage();
for (unsigned i = 0; i < vectorLength; ++i) {
if (isScribbledValue(storage->m_vector[i].get())) {
dataLog("Found scribbled value at i = ", i, "\n");
ASSERT_NOT_REACHED();
}
}
}
}
#endif
}