#pragma once
#include "JSCJSValue.h"
#include "PropertySlot.h"
#include <wtf/Assertions.h>
namespace JSC {
class JSObject;
class JSFunction;
class PutPropertySlot {
public:
enum Type { Uncachable, ExistingProperty, NewProperty, SetterProperty, CustomValue, CustomAccessor };
enum Context { UnknownContext, PutById, PutByIdEval };
typedef bool (*PutValueFunc)(ExecState*, EncodedJSValue thisObject, EncodedJSValue value);
PutPropertySlot(JSValue thisValue, bool isStrictMode = false, Context context = UnknownContext, bool isInitialization = false)
: m_type(Uncachable)
, m_base(0)
, m_thisValue(thisValue)
, m_offset(invalidOffset)
, m_isStrictMode(isStrictMode)
, m_isInitialization(isInitialization)
, m_context(context)
, m_cacheability(CachingAllowed)
, m_putFunction(nullptr)
{
}
void setExistingProperty(JSObject* base, PropertyOffset offset)
{
m_type = ExistingProperty;
m_base = base;
m_offset = offset;
}
void setNewProperty(JSObject* base, PropertyOffset offset)
{
m_type = NewProperty;
m_base = base;
m_offset = offset;
}
void setCustomValue(JSObject* base, PutValueFunc function)
{
m_type = CustomValue;
m_base = base;
m_putFunction = function;
}
void setCustomAccessor(JSObject* base, PutValueFunc function)
{
m_type = CustomAccessor;
m_base = base;
m_putFunction = function;
}
void setCacheableSetter(JSObject* base, PropertyOffset offset)
{
m_type = SetterProperty;
m_base = base;
m_offset = offset;
}
void setThisValue(JSValue thisValue)
{
m_thisValue = thisValue;
}
void setStrictMode(bool value)
{
m_isStrictMode = value;
}
PutValueFunc customSetter() const
{
ASSERT(isCacheableCustom());
return m_putFunction;
}
Context context() const { return static_cast<Context>(m_context); }
Type type() const { return m_type; }
JSObject* base() const { return m_base; }
JSValue thisValue() const { return m_thisValue; }
bool isStrictMode() const { return m_isStrictMode; }
bool isCacheablePut() const { return isCacheable() && (m_type == NewProperty || m_type == ExistingProperty); }
bool isCacheableSetter() const { return isCacheable() && m_type == SetterProperty; }
bool isCacheableCustom() const { return isCacheable() && (m_type == CustomValue || m_type == CustomAccessor); }
bool isCustomAccessor() const { return isCacheable() && m_type == CustomAccessor; }
bool isInitialization() const { return m_isInitialization; }
PropertyOffset cachedOffset() const
{
return m_offset;
}
void disableCaching()
{
m_cacheability = CachingDisallowed;
}
private:
bool isCacheable() const { return m_cacheability == CachingAllowed; }
Type m_type;
JSObject* m_base;
JSValue m_thisValue;
PropertyOffset m_offset;
bool m_isStrictMode;
bool m_isInitialization;
uint8_t m_context;
CacheabilityType m_cacheability;
PutValueFunc m_putFunction;
};
}