Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 96 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/Lookup.cpp b/Source/JavaScriptCore/runtime/Lookup.cpp
new file mode 100644
index 000000000..55c048fa3
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/Lookup.cpp
@@ -0,0 +1,96 @@
+/*
+ *  Copyright (C) 2008 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
+ *
+ */
+
+#include "config.h"
+#include "Lookup.h"
+
+#include "Executable.h"
+#include "JSFunction.h"
+
+namespace JSC {
+
+void HashTable::createTable(JSGlobalData* globalData) const
+{
+    ASSERT(!table);
+    int linkIndex = compactHashSizeMask + 1;
+    HashEntry* entries = new HashEntry[compactSize];
+    for (int i = 0; i < compactSize; ++i)
+        entries[i].setKey(0);
+    for (int i = 0; values[i].key; ++i) {
+        StringImpl* identifier = Identifier::add(globalData, values[i].key).leakRef();
+        int hashIndex = identifier->existingHash() & compactHashSizeMask;
+        HashEntry* entry = &entries[hashIndex];
+
+        if (entry->key()) {
+            while (entry->next()) {
+                entry = entry->next();
+            }
+            ASSERT(linkIndex < compactSize);
+            entry->setNext(&entries[linkIndex++]);
+            entry = entry->next();
+        }
+
+        entry->initialize(identifier, values[i].attributes, values[i].value1, values[i].value2, values[i].intrinsic);
+    }
+    table = entries;
+}
+
+void HashTable::deleteTable() const
+{
+    if (table) {
+        int max = compactSize;
+        for (int i = 0; i != max; ++i) {
+            if (StringImpl* key = table[i].key())
+                key->deref();
+        }
+        delete [] table;
+        table = 0;
+    }
+}
+
+bool setUpStaticFunctionSlot(ExecState* exec, const HashEntry* entry, JSObject* thisObj, const Identifier& propertyName, PropertySlot& slot)
+{
+    ASSERT(thisObj->globalObject());
+    ASSERT(entry->attributes() & Function);
+    WriteBarrierBase<Unknown>* location = thisObj->getDirectLocation(exec->globalData(), propertyName);
+
+    if (!location) {
+        // If a property is ever deleted from an object with a static table, then we reify
+        // all static functions at that time - after this we shouldn't be re-adding anything.
+        if (thisObj->staticFunctionsReified())
+            return false;
+    
+        JSFunction* function;
+        JSGlobalObject* globalObject = thisObj->globalObject();
+#if ENABLE(JIT)
+        if (exec->globalData().canUseJIT() && entry->intrinsic() != NoIntrinsic)
+            function = JSFunction::create(exec, globalObject, entry->functionLength(), propertyName, exec->globalData().getHostFunction(entry->function(), entry->intrinsic()));
+        else
+#endif
+            function = JSFunction::create(exec, globalObject, entry->functionLength(), propertyName, entry->function());
+
+        thisObj->putDirect(exec->globalData(), propertyName, function, entry->attributes());
+        location = thisObj->getDirectLocation(exec->globalData(), propertyName);
+    }
+
+    slot.setValue(thisObj, location->get(), thisObj->offsetForLocation(location));
+    return true;
+}
+
+} // namespace JSC