#include <wtf/Assertions.h>
namespace JSC {
- struct CompactHashIndex {
- const int16_t value;
- const int16_t next;
- };
- // FIXME: There is no reason this get function can't be simpler.
- // ie. typedef JSValue (*GetFunction)(ExecState*, JSObject* baseObject)
- typedef PropertySlot::GetValueFunc GetFunction;
- typedef PutPropertySlot::PutValueFunc PutFunction;
- typedef FunctionExecutable* (*BuiltinGenerator)(VM&);
+struct CompactHashIndex {
+ const int16_t value;
+ const int16_t next;
+};
- // Hash table generated by the create_hash_table script.
- struct HashTableValue {
- const char* m_key; // property name
- unsigned m_attributes; // JSObject attributes
- Intrinsic m_intrinsic;
- intptr_t m_value1;
- intptr_t m_value2;
+// FIXME: There is no reason this get function can't be simpler.
+// ie. typedef JSValue (*GetFunction)(ExecState*, JSObject* baseObject)
+typedef PropertySlot::GetValueFunc GetFunction;
+typedef PutPropertySlot::PutValueFunc PutFunction;
+typedef FunctionExecutable* (*BuiltinGenerator)(VM&);
- unsigned attributes() const { return m_attributes; }
+// Hash table generated by the create_hash_table script.
+struct HashTableValue {
+ const char* m_key; // property name
+ unsigned m_attributes; // JSObject attributes
+ Intrinsic m_intrinsic;
+ intptr_t m_value1;
+ intptr_t m_value2;
- Intrinsic intrinsic() const { ASSERT(m_attributes & Function); return m_intrinsic; }
- BuiltinGenerator builtinGenerator() const { ASSERT(m_attributes & Builtin); return reinterpret_cast<BuiltinGenerator>(m_value1); }
- NativeFunction function() const { ASSERT(m_attributes & Function); return reinterpret_cast<NativeFunction>(m_value1); }
- unsigned char functionLength() const { ASSERT(m_attributes & Function); return static_cast<unsigned char>(m_value2); }
+ unsigned attributes() const { return m_attributes; }
- GetFunction propertyGetter() const { ASSERT(!(m_attributes & BuiltinOrFunctionOrConstant)); return reinterpret_cast<GetFunction>(m_value1); }
- PutFunction propertyPutter() const { ASSERT(!(m_attributes & BuiltinOrFunctionOrConstant)); return reinterpret_cast<PutFunction>(m_value2); }
+ Intrinsic intrinsic() const { ASSERT(m_attributes & Function); return m_intrinsic; }
+ BuiltinGenerator builtinGenerator() const { ASSERT(m_attributes & Builtin); return reinterpret_cast<BuiltinGenerator>(m_value1); }
+ NativeFunction function() const { ASSERT(m_attributes & Function); return reinterpret_cast<NativeFunction>(m_value1); }
+ unsigned char functionLength() const { ASSERT(m_attributes & Function); return static_cast<unsigned char>(m_value2); }
- intptr_t constantInteger() const { ASSERT(m_attributes & ConstantInteger); return m_value1; }
+ GetFunction propertyGetter() const { ASSERT(!(m_attributes & BuiltinOrFunctionOrAccessorOrConstant)); return reinterpret_cast<GetFunction>(m_value1); }
+ PutFunction propertyPutter() const { ASSERT(!(m_attributes & BuiltinOrFunctionOrAccessorOrConstant)); return reinterpret_cast<PutFunction>(m_value2); }
- intptr_t lexerValue() const { ASSERT(!m_attributes); return m_value1; }
- };
+ NativeFunction accessorGetter() const { ASSERT(m_attributes & Accessor); return reinterpret_cast<NativeFunction>(m_value1); }
+ NativeFunction accessorSetter() const { ASSERT(m_attributes & Accessor); return reinterpret_cast<NativeFunction>(m_value2); }
- struct HashTable {
- mutable int numberOfValues;
- int indexMask;
- bool hasSetterOrReadonlyProperties;
+ intptr_t constantInteger() const { ASSERT(m_attributes & ConstantInteger); return m_value1; }
- const HashTableValue* values; // Fixed values generated by script.
- mutable const char** keys; // Table allocated at runtime.
- const CompactHashIndex* index;
+ intptr_t lexerValue() const { ASSERT(!m_attributes); return m_value1; }
+};
- ALWAYS_INLINE HashTable copy() const
- {
- // Don't copy dynamic table since it's thread specific.
- HashTable result = { numberOfValues, indexMask, hasSetterOrReadonlyProperties, values, 0, index };
- return result;
- }
+struct HashTable {
+ mutable int numberOfValues;
+ int indexMask;
+ bool hasSetterOrReadonlyProperties;
+
+ const HashTableValue* values; // Fixed values generated by script.
+ mutable const char** keys; // Table allocated at runtime.
+ const CompactHashIndex* index;
+
+ ALWAYS_INLINE HashTable copy() const
+ {
+ // Don't copy dynamic table since it's thread specific.
+ HashTable result = { numberOfValues, indexMask, hasSetterOrReadonlyProperties, values, 0, index };
+ return result;
+ }
+
+ ALWAYS_INLINE void initializeIfNeeded() const
+ {
+ if (!keys)
+ createTable();
+ }
+
+ JS_EXPORT_PRIVATE void deleteTable() const;
+
+ // Find an entry in the table, and return the entry.
+ ALWAYS_INLINE const HashTableValue* entry(PropertyName propertyName) const
+ {
+ initializeIfNeeded();
+
+ if (propertyName.isSymbol())
+ return nullptr;
- ALWAYS_INLINE void initializeIfNeeded(VM& vm) const
+ auto uid = propertyName.uid();
+ if (!uid)
+ return nullptr;
+
+ ASSERT(keys);
+
+ int indexEntry = IdentifierRepHash::hash(uid) & indexMask;
+ int valueIndex = index[indexEntry].value;
+ if (valueIndex == -1)
+ return nullptr;
+
+ while (true) {
+ if (WTF::equal(uid, keys[valueIndex]))
+ return &values[valueIndex];
+
+ indexEntry = index[indexEntry].next;
+ if (indexEntry == -1)
+ return nullptr;
+ valueIndex = index[indexEntry].value;
+ ASSERT(valueIndex != -1);
+ };
+ }
+
+ class ConstIterator {
+ public:
+ ConstIterator(const HashTable* table, int position)
+ : m_table(table)
+ , m_position(position)
{
- if (!keys)
- createTable(vm);
+ skipInvalidKeys();
}
- ALWAYS_INLINE void initializeIfNeeded(ExecState* exec) const
+ const HashTableValue* value()
{
- if (!keys)
- createTable(exec->vm());
+ return &m_table->values[m_position];
}
- JS_EXPORT_PRIVATE void deleteTable() const;
-
- // Find an entry in the table, and return the entry.
- ALWAYS_INLINE const HashTableValue* entry(VM& vm, PropertyName identifier) const
+ const char* key()
{
- initializeIfNeeded(vm);
- return entry(identifier);
+ return m_table->keys[m_position];
}
- ALWAYS_INLINE const HashTableValue* entry(ExecState* exec, PropertyName identifier) const
+ const HashTableValue* operator->()
{
- initializeIfNeeded(exec);
- return entry(identifier);
+ return value();
}
- class ConstIterator {
- public:
- ConstIterator(const HashTable* table, int position)
- : m_table(table)
- , m_position(position)
- {
- skipInvalidKeys();
- }
-
- const HashTableValue* value()
- {
- return &m_table->values[m_position];
- }
-
- const char* key()
- {
- return m_table->keys[m_position];
- }
-
- const HashTableValue* operator->()
- {
- return value();
- }
-
- bool operator!=(const ConstIterator& other)
- {
- ASSERT(m_table == other.m_table);
- return m_position != other.m_position;
- }
-
- ConstIterator& operator++()
- {
- ASSERT(m_position < m_table->numberOfValues);
- ++m_position;
- skipInvalidKeys();
- return *this;
- }
-
- private:
- void skipInvalidKeys()
- {
- ASSERT(m_position <= m_table->numberOfValues);
- while (m_position < m_table->numberOfValues && !m_table->keys[m_position])
- ++m_position;
- ASSERT(m_position <= m_table->numberOfValues);
- }
-
- const HashTable* m_table;
- int m_position;
- };
-
- ConstIterator begin(VM& vm) const
+ bool operator!=(const ConstIterator& other)
{
- initializeIfNeeded(vm);
- return ConstIterator(this, 0);
+ ASSERT(m_table == other.m_table);
+ return m_position != other.m_position;
}
- ConstIterator end(VM& vm) const
+
+ ConstIterator& operator++()
{
- initializeIfNeeded(vm);
- return ConstIterator(this, numberOfValues);
+ ASSERT(m_position < m_table->numberOfValues);
+ ++m_position;
+ skipInvalidKeys();
+ return *this;
}
private:
- ALWAYS_INLINE const HashTableValue* entry(PropertyName propertyName) const
+ void skipInvalidKeys()
{
- StringImpl* impl = propertyName.uid();
- if (!impl)
- return 0;
-
- ASSERT(keys);
-
- int indexEntry = impl->existingHash() & indexMask;
- int valueIndex = index[indexEntry].value;
- if (valueIndex == -1)
- return 0;
-
- while (true) {
- if (WTF::equal(impl, keys[valueIndex]))
- return &values[valueIndex];
-
- indexEntry = index[indexEntry].next;
- if (indexEntry == -1)
- return nullptr;
- valueIndex = index[indexEntry].value;
- ASSERT(valueIndex != -1);
- };
+ ASSERT(m_position <= m_table->numberOfValues);
+ while (m_position < m_table->numberOfValues && !m_table->keys[m_position])
+ ++m_position;
+ ASSERT(m_position <= m_table->numberOfValues);
}
- // Convert the hash table keys to identifiers.
- JS_EXPORT_PRIVATE void createTable(VM&) const;
+ const HashTable* m_table;
+ int m_position;
};
- JS_EXPORT_PRIVATE bool setUpStaticFunctionSlot(ExecState*, const HashTableValue*, JSObject* thisObject, PropertyName, PropertySlot&);
-
- /**
- * This method does it all (looking in the hashtable, checking for function
- * overrides, creating the function or retrieving from cache, calling
- * getValueProperty in case of a non-function property, forwarding to parent if
- * unknown property).
- */
- template <class ThisImp, class ParentImp>
- inline bool getStaticPropertySlot(ExecState* exec, const HashTable& table, ThisImp* thisObj, PropertyName propertyName, PropertySlot& slot)
+ ConstIterator begin() const
{
- const HashTableValue* entry = table.entry(exec, propertyName);
+ initializeIfNeeded();
+ return ConstIterator(this, 0);
+ }
+ ConstIterator end() const
+ {
+ initializeIfNeeded();
+ return ConstIterator(this, numberOfValues);
+ }
- if (!entry) // not found, forward to parent
- return ParentImp::getOwnPropertySlot(thisObj, exec, propertyName, slot);
+private:
+ // Convert the hash table keys to identifiers.
+ JS_EXPORT_PRIVATE void createTable() const;
+};
- if (entry->attributes() & BuiltinOrFunction)
- return setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot);
+JS_EXPORT_PRIVATE bool setUpStaticFunctionSlot(ExecState*, const HashTableValue*, JSObject* thisObject, PropertyName, PropertySlot&);
+JS_EXPORT_PRIVATE void reifyStaticAccessor(VM&, const HashTableValue&, JSObject& thisObject, PropertyName);
- if (entry->attributes() & ConstantInteger) {
- slot.setValue(thisObj, entry->attributes(), jsNumber(entry->constantInteger()));
- return true;
- }
-
- slot.setCacheableCustom(thisObj, entry->attributes(), entry->propertyGetter());
+/**
+ * This method does it all (looking in the hashtable, checking for function
+ * overrides, creating the function or retrieving from cache, calling
+ * getValueProperty in case of a non-function property, forwarding to parent if
+ * unknown property).
+ */
+template <class ThisImp, class ParentImp>
+inline bool getStaticPropertySlot(ExecState* exec, const HashTable& table, ThisImp* thisObj, PropertyName propertyName, PropertySlot& slot)
+{
+ const HashTableValue* entry = table.entry(propertyName);
+
+ if (!entry) // not found, forward to parent
+ return ParentImp::getOwnPropertySlot(thisObj, exec, propertyName, slot);
+
+ if (entry->attributes() & BuiltinOrFunctionOrAccessor)
+ return setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot);
+
+ if (entry->attributes() & ConstantInteger) {
+ slot.setValue(thisObj, entry->attributes(), jsNumber(entry->constantInteger()));
return true;
}
- /**
- * Simplified version of getStaticPropertySlot in case there are only functions.
- * Using this instead of getStaticPropertySlot allows 'this' to avoid implementing
- * a dummy getValueProperty.
- */
- template <class ParentImp>
- inline bool getStaticFunctionSlot(ExecState* exec, const HashTable& table, JSObject* thisObj, PropertyName propertyName, PropertySlot& slot)
- {
- if (ParentImp::getOwnPropertySlot(thisObj, exec, propertyName, slot))
- return true;
+ slot.setCacheableCustom(thisObj, entry->attributes(), entry->propertyGetter());
+ return true;
+}
- const HashTableValue* entry = table.entry(exec, propertyName);
- if (!entry)
- return false;
+/**
+ * Simplified version of getStaticPropertySlot in case there are only functions.
+ * Using this instead of getStaticPropertySlot allows 'this' to avoid implementing
+ * a dummy getValueProperty.
+ */
+template <class ParentImp>
+inline bool getStaticFunctionSlot(ExecState* exec, const HashTable& table, JSObject* thisObj, PropertyName propertyName, PropertySlot& slot)
+{
+ if (ParentImp::getOwnPropertySlot(thisObj, exec, propertyName, slot))
+ return true;
- return setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot);
- }
+ const HashTableValue* entry = table.entry(propertyName);
+ if (!entry)
+ return false;
- /**
- * Simplified version of getStaticPropertySlot in case there are no functions, only "values".
- * Using this instead of getStaticPropertySlot removes the need for a FuncImp class.
- */
- template <class ThisImp, class ParentImp>
- inline bool getStaticValueSlot(ExecState* exec, const HashTable& table, ThisImp* thisObj, PropertyName propertyName, PropertySlot& slot)
- {
- const HashTableValue* entry = table.entry(exec, propertyName);
+ return setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot);
+}
- if (!entry) // not found, forward to parent
- return ParentImp::getOwnPropertySlot(thisObj, exec, propertyName, slot);
+/**
+ * Simplified version of getStaticPropertySlot in case there are no functions, only "values".
+ * Using this instead of getStaticPropertySlot removes the need for a FuncImp class.
+ */
+template <class ThisImp, class ParentImp>
+inline bool getStaticValueSlot(ExecState* exec, const HashTable& table, ThisImp* thisObj, PropertyName propertyName, PropertySlot& slot)
+{
+ const HashTableValue* entry = table.entry(propertyName);
- ASSERT(!(entry->attributes() & BuiltinOrFunction));
+ if (!entry) // not found, forward to parent
+ return ParentImp::getOwnPropertySlot(thisObj, exec, propertyName, slot);
- if (entry->attributes() & ConstantInteger) {
- slot.setValue(thisObj, entry->attributes(), jsNumber(entry->constantInteger()));
- return true;
- }
+ ASSERT(!(entry->attributes() & BuiltinOrFunctionOrAccessor));
- slot.setCacheableCustom(thisObj, entry->attributes(), entry->propertyGetter());
+ if (entry->attributes() & ConstantInteger) {
+ slot.setValue(thisObj, entry->attributes(), jsNumber(entry->constantInteger()));
return true;
}
- inline void putEntry(ExecState* exec, const HashTableValue* entry, JSObject* base, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
- {
- // If this is a function put it as an override property.
- if (entry->attributes() & BuiltinOrFunction) {
- if (JSObject* thisObject = jsDynamicCast<JSObject*>(slot.thisValue()))
- thisObject->putDirect(exec->vm(), propertyName, value);
- } else if (!(entry->attributes() & ReadOnly)) {
- entry->propertyPutter()(exec, base, JSValue::encode(slot.thisValue()), JSValue::encode(value));
- slot.setCustomProperty(base, entry->propertyPutter());
- } else if (slot.isStrictMode())
+ slot.setCacheableCustom(thisObj, entry->attributes(), entry->propertyGetter());
+ return true;
+}
+
+inline void putEntry(ExecState* exec, const HashTableValue* entry, JSObject* base, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
+{
+ // If this is a function put it as an override property.
+ if (entry->attributes() & BuiltinOrFunction) {
+ if (JSObject* thisObject = jsDynamicCast<JSObject*>(slot.thisValue()))
+ thisObject->putDirect(exec->vm(), propertyName, value);
+ } else if (entry->attributes() & Accessor) {
+ if (slot.isStrictMode())
throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
- }
-
- /**
- * This one is for "put".
- * It looks up a hash entry for the property to be set. If an entry
- * is found it sets the value and returns true, else it returns false.
- */
- inline bool lookupPut(ExecState* exec, PropertyName propertyName, JSObject* base, JSValue value, const HashTable& table, PutPropertySlot& slot)
- {
- const HashTableValue* entry = table.entry(exec, propertyName);
+ } else if (!(entry->attributes() & ReadOnly)) {
+ entry->propertyPutter()(exec, base, JSValue::encode(slot.thisValue()), JSValue::encode(value));
+ slot.setCustomProperty(base, entry->propertyPutter());
+ } else if (slot.isStrictMode())
+ throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+}
+
+/**
+ * This one is for "put".
+ * It looks up a hash entry for the property to be set. If an entry
+ * is found it sets the value and returns true, else it returns false.
+ */
+inline bool lookupPut(ExecState* exec, PropertyName propertyName, JSObject* base, JSValue value, const HashTable& table, PutPropertySlot& slot)
+{
+ const HashTableValue* entry = table.entry(propertyName);
+
+ if (!entry)
+ return false;
+
+ putEntry(exec, entry, base, propertyName, value, slot);
+ return true;
+}
+
+template<unsigned numberOfValues>
+inline void reifyStaticProperties(VM& vm, const HashTableValue (&values)[numberOfValues], JSObject& thisObj)
+{
+ BatchedTransitionOptimizer transitionOptimizer(vm, &thisObj);
+ for (auto& value : values) {
+ if (!value.m_key)
+ continue;
+
+ Identifier propertyName = Identifier::fromString(&vm, reinterpret_cast<const LChar*>(value.m_key), strlen(value.m_key));
+ if (value.attributes() & Builtin) {
+ thisObj.putDirectBuiltinFunction(vm, thisObj.globalObject(), propertyName, value.builtinGenerator()(vm), value.attributes());
+ continue;
+ }
- if (!entry)
- return false;
+ if (value.attributes() & Function) {
+ thisObj.putDirectNativeFunction(vm, thisObj.globalObject(), propertyName, value.functionLength(),
+ value.function(), value.intrinsic(), value.attributes());
+ continue;
+ }
- putEntry(exec, entry, base, propertyName, value, slot);
- return true;
- }
+ if (value.attributes() & ConstantInteger) {
+ thisObj.putDirect(vm, propertyName, jsNumber(value.constantInteger()), value.attributes());
+ continue;
+ }
- template<unsigned numberOfValues>
- inline void reifyStaticProperties(VM& vm, const HashTableValue (&values)[numberOfValues], JSObject& thisObj)
- {
- BatchedTransitionOptimizer transitionOptimizer(vm, &thisObj);
- for (auto& value : values) {
- if (!value.m_key)
- continue;
-
- Identifier propertyName(&vm, reinterpret_cast<const LChar*>(value.m_key), strlen(value.m_key));
- if (value.attributes() & Builtin) {
- thisObj.putDirectBuiltinFunction(vm, thisObj.globalObject(), propertyName, value.builtinGenerator()(vm), value.attributes());
- continue;
- }
-
- if (value.attributes() & Function) {
- thisObj.putDirectNativeFunction(vm, thisObj.globalObject(), propertyName, value.functionLength(),
- value.function(), value.intrinsic(), value.attributes());
- continue;
- }
-
- if (value.attributes() & ConstantInteger) {
- thisObj.putDirect(vm, propertyName, jsNumber(value.constantInteger()), value.attributes());
- continue;
- }
-
- if (value.attributes() & Accessor) {
- RELEASE_ASSERT_NOT_REACHED();
- continue;
- }
-
- CustomGetterSetter* customGetterSetter = CustomGetterSetter::create(vm, value.propertyGetter(), value.propertyPutter());
- thisObj.putDirectCustomAccessor(vm, propertyName, customGetterSetter, value.attributes());
+ if (value.attributes() & Accessor) {
+ reifyStaticAccessor(vm, value, thisObj, propertyName);
+ continue;
}
+
+ CustomGetterSetter* customGetterSetter = CustomGetterSetter::create(vm, value.propertyGetter(), value.propertyPutter());
+ thisObj.putDirectCustomAccessor(vm, propertyName, customGetterSetter, value.attributes());
}
+}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff