#include "Identifier.h"
#include "JSValue.h"
-#include "JSImmediate.h"
#include "Register.h"
#include <wtf/Assertions.h>
#include <wtf/NotFound.h>
class ExecState;
class JSObject;
-#define JSC_VALUE_SLOT_MARKER 0
-#define JSC_REGISTER_SLOT_MARKER reinterpret_cast<GetValueFunc>(1)
+#define JSC_VALUE_MARKER 0
+#define INDEX_GETTER_MARKER reinterpret_cast<GetValueFunc>(2)
+#define GETTER_FUNCTION_MARKER reinterpret_cast<GetValueFunc>(3)
class PropertySlot {
public:
+ enum CachedPropertyType {
+ Uncacheable,
+ Getter,
+ Custom,
+ Value
+ };
+
PropertySlot()
- : m_offset(WTF::notFound)
+ : m_cachedPropertyType(Uncacheable)
{
clearBase();
+ clearOffset();
clearValue();
}
- explicit PropertySlot(const JSValuePtr base)
+ explicit PropertySlot(const JSValue base)
: m_slotBase(base)
- , m_offset(WTF::notFound)
+ , m_cachedPropertyType(Uncacheable)
{
+ clearOffset();
clearValue();
}
- typedef JSValuePtr (*GetValueFunc)(ExecState*, const Identifier&, const PropertySlot&);
+ typedef JSValue (*GetValueFunc)(ExecState*, JSValue slotBase, const Identifier&);
+ typedef JSValue (*GetIndexValueFunc)(ExecState*, JSValue slotBase, unsigned);
- JSValuePtr getValue(ExecState* exec, const Identifier& propertyName) const
+ JSValue getValue(ExecState* exec, const Identifier& propertyName) const
{
- if (m_getValue == JSC_VALUE_SLOT_MARKER)
- return *m_data.valueSlot;
- if (m_getValue == JSC_REGISTER_SLOT_MARKER)
- return (*m_data.registerSlot).jsValue(exec);
- return m_getValue(exec, propertyName, *this);
+ if (m_getValue == JSC_VALUE_MARKER)
+ return m_value;
+ if (m_getValue == INDEX_GETTER_MARKER)
+ return m_getIndexValue(exec, slotBase(), index());
+ if (m_getValue == GETTER_FUNCTION_MARKER)
+ return functionGetter(exec);
+ return m_getValue(exec, slotBase(), propertyName);
}
- JSValuePtr getValue(ExecState* exec, unsigned propertyName) const
+ JSValue getValue(ExecState* exec, unsigned propertyName) const
{
- if (m_getValue == JSC_VALUE_SLOT_MARKER)
- return *m_data.valueSlot;
- if (m_getValue == JSC_REGISTER_SLOT_MARKER)
- return (*m_data.registerSlot).jsValue(exec);
- return m_getValue(exec, Identifier::from(exec, propertyName), *this);
+ if (m_getValue == JSC_VALUE_MARKER)
+ return m_value;
+ if (m_getValue == INDEX_GETTER_MARKER)
+ return m_getIndexValue(exec, m_slotBase, m_data.index);
+ if (m_getValue == GETTER_FUNCTION_MARKER)
+ return functionGetter(exec);
+ return m_getValue(exec, slotBase(), Identifier::from(exec, propertyName));
}
- bool isCacheable() const { return m_offset != WTF::notFound; }
+ CachedPropertyType cachedPropertyType() const { return m_cachedPropertyType; }
+ bool isCacheable() const { return m_cachedPropertyType != Uncacheable; }
+ bool isCacheableValue() const { return m_cachedPropertyType == Value; }
size_t cachedOffset() const
{
ASSERT(isCacheable());
return m_offset;
}
- void putValue(JSValuePtr value)
- {
- if (m_getValue == JSC_VALUE_SLOT_MARKER) {
- *m_data.valueSlot = value;
- return;
- }
- ASSERT(m_getValue == JSC_REGISTER_SLOT_MARKER);
- *m_data.registerSlot = JSValuePtr(value);
- }
-
- void setValueSlot(JSValuePtr* valueSlot)
- {
- ASSERT(valueSlot);
- m_getValue = JSC_VALUE_SLOT_MARKER;
- clearBase();
- m_data.valueSlot = valueSlot;
- }
-
- void setValueSlot(JSValuePtr slotBase, JSValuePtr* valueSlot)
+ void setValue(JSValue slotBase, JSValue value)
{
- ASSERT(valueSlot);
- m_getValue = JSC_VALUE_SLOT_MARKER;
+ ASSERT(value);
+ clearOffset();
+ m_getValue = JSC_VALUE_MARKER;
m_slotBase = slotBase;
- m_data.valueSlot = valueSlot;
+ m_value = value;
}
- void setValueSlot(JSValuePtr slotBase, JSValuePtr* valueSlot, size_t offset)
+ void setValue(JSValue slotBase, JSValue value, size_t offset)
{
- ASSERT(valueSlot);
- m_getValue = JSC_VALUE_SLOT_MARKER;
+ ASSERT(value);
+ m_getValue = JSC_VALUE_MARKER;
m_slotBase = slotBase;
- m_data.valueSlot = valueSlot;
+ m_value = value;
m_offset = offset;
+ m_cachedPropertyType = Value;
}
-
- void setValue(JSValuePtr value)
+
+ void setValue(JSValue value)
{
ASSERT(value);
- m_getValue = JSC_VALUE_SLOT_MARKER;
clearBase();
+ clearOffset();
+ m_getValue = JSC_VALUE_MARKER;
m_value = value;
- m_data.valueSlot = &m_value;
}
- void setRegisterSlot(Register* registerSlot)
+ void setCustom(JSValue slotBase, GetValueFunc getValue)
{
- ASSERT(registerSlot);
- m_getValue = JSC_REGISTER_SLOT_MARKER;
- clearBase();
- m_data.registerSlot = registerSlot;
+ ASSERT(slotBase);
+ ASSERT(getValue);
+ m_getValue = getValue;
+ m_getIndexValue = 0;
+ m_slotBase = slotBase;
}
-
- void setCustom(JSValuePtr slotBase, GetValueFunc getValue)
+
+ void setCacheableCustom(JSValue slotBase, GetValueFunc getValue)
{
ASSERT(slotBase);
ASSERT(getValue);
m_getValue = getValue;
+ m_getIndexValue = 0;
m_slotBase = slotBase;
+ m_cachedPropertyType = Custom;
}
- void setCustomIndex(JSValuePtr slotBase, unsigned index, GetValueFunc getValue)
+ void setCustomIndex(JSValue slotBase, unsigned index, GetIndexValueFunc getIndexValue)
{
ASSERT(slotBase);
- ASSERT(getValue);
- m_getValue = getValue;
+ ASSERT(getIndexValue);
+ m_getValue = INDEX_GETTER_MARKER;
+ m_getIndexValue = getIndexValue;
m_slotBase = slotBase;
m_data.index = index;
}
-
+
void setGetterSlot(JSObject* getterFunc)
{
ASSERT(getterFunc);
- m_getValue = functionGetter;
+ m_thisValue = m_slotBase;
+ m_getValue = GETTER_FUNCTION_MARKER;
m_data.getterFunc = getterFunc;
}
-
+
+ void setCacheableGetterSlot(JSValue slotBase, JSObject* getterFunc, unsigned offset)
+ {
+ ASSERT(getterFunc);
+ m_getValue = GETTER_FUNCTION_MARKER;
+ m_thisValue = m_slotBase;
+ m_slotBase = slotBase;
+ m_data.getterFunc = getterFunc;
+ m_offset = offset;
+ m_cachedPropertyType = Getter;
+ }
+
void setUndefined()
{
- clearBase();
setValue(jsUndefined());
}
- JSValuePtr slotBase() const
+ JSValue slotBase() const
{
- ASSERT(m_slotBase);
return m_slotBase;
}
- void setBase(JSValuePtr base)
+ void setBase(JSValue base)
{
ASSERT(m_slotBase);
ASSERT(base);
void clearBase()
{
#ifndef NDEBUG
- m_slotBase = noValue();
+ m_slotBase = JSValue();
#endif
}
void clearValue()
{
#ifndef NDEBUG
- m_value = noValue();
+ m_value = JSValue();
#endif
}
+ void clearOffset()
+ {
+ // Clear offset even in release builds, in case this PropertySlot has been used before.
+ // (For other data members, we don't need to clear anything because reuse would meaningfully overwrite them.)
+ m_offset = 0;
+ m_cachedPropertyType = Uncacheable;
+ }
+
unsigned index() const { return m_data.index; }
+ GetValueFunc customGetter() const
+ {
+ ASSERT(m_cachedPropertyType == Custom);
+ return m_getValue;
+ }
private:
- static JSValuePtr functionGetter(ExecState*, const Identifier&, const PropertySlot&);
+ JS_EXPORT_PRIVATE JSValue functionGetter(ExecState*) const;
GetValueFunc m_getValue;
+ GetIndexValueFunc m_getIndexValue;
- JSValuePtr m_slotBase;
+ JSValue m_slotBase;
union {
JSObject* getterFunc;
- JSValuePtr* valueSlot;
- Register* registerSlot;
unsigned index;
} m_data;
- JSValuePtr m_value;
+ JSValue m_value;
+ JSValue m_thisValue;
size_t m_offset;
+ CachedPropertyType m_cachedPropertyType;
};
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff