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Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/runtime/Lookup.h')
| -rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/runtime/Lookup.h | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/Lookup.h b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/Lookup.h deleted file mode 100644 index e673c09..0000000 --- a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/Lookup.h +++ /dev/null @@ -1,323 +0,0 @@ -/* - * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) - * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#ifndef Lookup_h -#define Lookup_h - -#include "CallFrame.h" -#include "Identifier.h" -#include "JSGlobalObject.h" -#include "JSObject.h" -#include "PropertySlot.h" -#include <stdio.h> -#include <wtf/Assertions.h> - -// Bug #26843: Work around Metrowerks compiler bug -#if COMPILER(WINSCW) -#define JSC_CONST_HASHTABLE -#else -#define JSC_CONST_HASHTABLE const -#endif - -namespace JSC { - - // Hash table generated by the create_hash_table script. - struct HashTableValue { - const char* key; // property name - unsigned char attributes; // JSObject attributes - intptr_t value1; - intptr_t 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 void (*PutFunction)(ExecState*, JSObject* baseObject, JSValue value); - - class HashEntry : public FastAllocBase { - public: - void initialize(UString::Rep* key, unsigned char attributes, intptr_t v1, intptr_t v2) - { - m_key = key; - m_attributes = attributes; - m_u.store.value1 = v1; - m_u.store.value2 = v2; - m_next = 0; - } - - void setKey(UString::Rep* key) { m_key = key; } - UString::Rep* key() const { return m_key; } - - unsigned char attributes() const { return m_attributes; } - - NativeFunction function() const { ASSERT(m_attributes & Function); return m_u.function.functionValue; } - unsigned char functionLength() const { ASSERT(m_attributes & Function); return static_cast<unsigned char>(m_u.function.length); } - - GetFunction propertyGetter() const { ASSERT(!(m_attributes & Function)); return m_u.property.get; } - PutFunction propertyPutter() const { ASSERT(!(m_attributes & Function)); return m_u.property.put; } - - intptr_t lexerValue() const { ASSERT(!m_attributes); return m_u.lexer.value; } - - void setNext(HashEntry *next) { m_next = next; } - HashEntry* next() const { return m_next; } - - private: - UString::Rep* m_key; - unsigned char m_attributes; // JSObject attributes - - union { - struct { - intptr_t value1; - intptr_t value2; - } store; - struct { - NativeFunction functionValue; - intptr_t length; // number of arguments for function - } function; - struct { - GetFunction get; - PutFunction put; - } property; - struct { - intptr_t value; - intptr_t unused; - } lexer; - } m_u; - - HashEntry* m_next; - }; - - struct HashTable { - - int compactSize; - int compactHashSizeMask; - - const HashTableValue* values; // Fixed values generated by script. - mutable const HashEntry* table; // Table allocated at runtime. - - ALWAYS_INLINE void initializeIfNeeded(JSGlobalData* globalData) const - { - if (!table) - createTable(globalData); - } - - ALWAYS_INLINE void initializeIfNeeded(ExecState* exec) const - { - if (!table) - createTable(&exec->globalData()); - } - - void deleteTable() const; - - // Find an entry in the table, and return the entry. - ALWAYS_INLINE const HashEntry* entry(JSGlobalData* globalData, const Identifier& identifier) const - { - initializeIfNeeded(globalData); - return entry(identifier); - } - - ALWAYS_INLINE const HashEntry* entry(ExecState* exec, const Identifier& identifier) const - { - initializeIfNeeded(exec); - return entry(identifier); - } - - private: - ALWAYS_INLINE const HashEntry* entry(const Identifier& identifier) const - { - ASSERT(table); - - const HashEntry* entry = &table[identifier.ustring().rep()->existingHash() & compactHashSizeMask]; - - if (!entry->key()) - return 0; - - do { - if (entry->key() == identifier.ustring().rep()) - return entry; - entry = entry->next(); - } while (entry); - - return 0; - } - - // Convert the hash table keys to identifiers. - void createTable(JSGlobalData*) const; - }; - - void setUpStaticFunctionSlot(ExecState*, const HashEntry*, JSObject* thisObject, const Identifier& 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, const Identifier& propertyName, PropertySlot& slot) - { - const HashEntry* entry = table->entry(exec, propertyName); - - if (!entry) // not found, forward to parent - return thisObj->ParentImp::getOwnPropertySlot(exec, propertyName, slot); - - if (entry->attributes() & Function) - setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot); - else - slot.setCustom(thisObj, entry->propertyGetter()); - - return true; - } - - template <class ThisImp, class ParentImp> - inline bool getStaticPropertyDescriptor(ExecState* exec, const HashTable* table, ThisImp* thisObj, const Identifier& propertyName, PropertyDescriptor& descriptor) - { - const HashEntry* entry = table->entry(exec, propertyName); - - if (!entry) // not found, forward to parent - return thisObj->ParentImp::getOwnPropertyDescriptor(exec, propertyName, descriptor); - - PropertySlot slot; - if (entry->attributes() & Function) - setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot); - else - slot.setCustom(thisObj, entry->propertyGetter()); - - descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); - 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, const Identifier& propertyName, PropertySlot& slot) - { - if (static_cast<ParentImp*>(thisObj)->ParentImp::getOwnPropertySlot(exec, propertyName, slot)) - return true; - - const HashEntry* entry = table->entry(exec, propertyName); - if (!entry) - return false; - - setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot); - return true; - } - - /** - * Simplified version of getStaticPropertyDescriptor in case there are only functions. - * Using this instead of getStaticPropertyDescriptor allows 'this' to avoid implementing - * a dummy getValueProperty. - */ - template <class ParentImp> - inline bool getStaticFunctionDescriptor(ExecState* exec, const HashTable* table, JSObject* thisObj, const Identifier& propertyName, PropertyDescriptor& descriptor) - { - if (static_cast<ParentImp*>(thisObj)->ParentImp::getOwnPropertyDescriptor(exec, propertyName, descriptor)) - return true; - - const HashEntry* entry = table->entry(exec, propertyName); - if (!entry) - return false; - - PropertySlot slot; - setUpStaticFunctionSlot(exec, entry, thisObj, propertyName, slot); - descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); - return true; - } - - /** - * 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, const Identifier& propertyName, PropertySlot& slot) - { - const HashEntry* entry = table->entry(exec, propertyName); - - if (!entry) // not found, forward to parent - return thisObj->ParentImp::getOwnPropertySlot(exec, propertyName, slot); - - ASSERT(!(entry->attributes() & Function)); - - slot.setCustom(thisObj, entry->propertyGetter()); - return true; - } - - /** - * Simplified version of getStaticPropertyDescriptor in case there are no functions, only "values". - * Using this instead of getStaticPropertyDescriptor removes the need for a FuncImp class. - */ - template <class ThisImp, class ParentImp> - inline bool getStaticValueDescriptor(ExecState* exec, const HashTable* table, ThisImp* thisObj, const Identifier& propertyName, PropertyDescriptor& descriptor) - { - const HashEntry* entry = table->entry(exec, propertyName); - - if (!entry) // not found, forward to parent - return thisObj->ParentImp::getOwnPropertyDescriptor(exec, propertyName, descriptor); - - ASSERT(!(entry->attributes() & Function)); - PropertySlot slot; - slot.setCustom(thisObj, entry->propertyGetter()); - descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); - return true; - } - - /** - * 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. - */ - template <class ThisImp> - inline bool lookupPut(ExecState* exec, const Identifier& propertyName, JSValue value, const HashTable* table, ThisImp* thisObj) - { - const HashEntry* entry = table->entry(exec, propertyName); - - if (!entry) - return false; - - if (entry->attributes() & Function) { // function: put as override property - if (LIKELY(value.isCell())) - thisObj->putDirectFunction(propertyName, value.asCell()); - else - thisObj->putDirect(propertyName, value); - } else if (!(entry->attributes() & ReadOnly)) - entry->propertyPutter()(exec, thisObj, value); - - return true; - } - - /** - * This one is for "put". - * It calls lookupPut<ThisImp>() to set the value. If that call - * returns false (meaning no entry in the hash table was found), - * then it calls put() on the ParentImp class. - */ - template <class ThisImp, class ParentImp> - inline void lookupPut(ExecState* exec, const Identifier& propertyName, JSValue value, const HashTable* table, ThisImp* thisObj, PutPropertySlot& slot) - { - if (!lookupPut<ThisImp>(exec, propertyName, value, table, thisObj)) - thisObj->ParentImp::put(exec, propertyName, value, slot); // not found: forward to parent - } - -} // namespace JSC - -#endif // Lookup_h |