1/* 2 * Copyright (C) 2008, 2012 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with this library; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 * 18 */ 19 20#include "config.h" 21#include "Lookup.h" 22 23#include "Executable.h" 24#include "JSFunction.h" 25#include "Operations.h" 26 27namespace JSC { 28 29void HashTable::createTable(VM* vm) const 30{ 31 ASSERT(!table); 32 int linkIndex = compactHashSizeMask + 1; 33 HashEntry* entries = new HashEntry[compactSize]; 34 for (int i = 0; i < compactSize; ++i) 35 entries[i].setKey(0); 36 for (int i = 0; values[i].key; ++i) { 37 StringImpl* identifier = Identifier::add(vm, values[i].key).leakRef(); 38 int hashIndex = identifier->existingHash() & compactHashSizeMask; 39 HashEntry* entry = &entries[hashIndex]; 40 41 if (entry->key()) { 42 while (entry->next()) { 43 entry = entry->next(); 44 } 45 ASSERT(linkIndex < compactSize); 46 entry->setNext(&entries[linkIndex++]); 47 entry = entry->next(); 48 } 49 50 entry->initialize(identifier, values[i].attributes, values[i].value1, values[i].value2, values[i].intrinsic); 51 } 52 table = entries; 53} 54 55void HashTable::deleteTable() const 56{ 57 if (table) { 58 int max = compactSize; 59 for (int i = 0; i != max; ++i) { 60 if (StringImpl* key = table[i].key()) 61 key->deref(); 62 } 63 delete [] table; 64 table = 0; 65 } 66} 67 68bool setUpStaticFunctionSlot(ExecState* exec, const HashEntry* entry, JSObject* thisObj, PropertyName propertyName, PropertySlot& slot) 69{ 70 ASSERT(thisObj->globalObject()); 71 ASSERT(entry->attributes() & Function); 72 PropertyOffset offset = thisObj->getDirectOffset(exec->vm(), propertyName); 73 74 if (!isValidOffset(offset)) { 75 // If a property is ever deleted from an object with a static table, then we reify 76 // all static functions at that time - after this we shouldn't be re-adding anything. 77 if (thisObj->staticFunctionsReified()) 78 return false; 79 80 thisObj->putDirectNativeFunction( 81 exec, thisObj->globalObject(), propertyName, entry->functionLength(), 82 entry->function(), entry->intrinsic(), entry->attributes()); 83 offset = thisObj->getDirectOffset(exec->vm(), propertyName); 84 ASSERT(isValidOffset(offset)); 85 } 86 87 slot.setValue(thisObj, thisObj->getDirect(offset), offset); 88 return true; 89} 90 91} // namespace JSC 92