1 files changed, 102 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/LazyClassStructure.cpp b/Source/JavaScriptCore/runtime/LazyClassStructure.cpp
new file mode 100644
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+++ b/Source/JavaScriptCore/runtime/LazyClassStructure.cpp
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+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "LazyClassStructure.h"
+
+#include "JSCInlines.h"
+#include "LazyPropertyInlines.h"
+
+namespace JSC {
+
+LazyClassStructure::Initializer::Initializer(VM& vm, JSGlobalObject* global, LazyClassStructure& classStructure, const StructureInitializer& structureInit)
+    : vm(vm)
+    , global(global)
+    , classStructure(classStructure)
+    , structureInit(structureInit)
+{
+}
+
+void LazyClassStructure::Initializer::setPrototype(JSObject* prototype)
+{
+    RELEASE_ASSERT(!this->prototype);
+    RELEASE_ASSERT(!structure);
+    RELEASE_ASSERT(!constructor);
+    
+    this->prototype = prototype;
+}
+
+void LazyClassStructure::Initializer::setStructure(Structure* structure)
+{
+    RELEASE_ASSERT(!this->structure);
+    RELEASE_ASSERT(!constructor);
+
+    this->structure = structure;
+    structureInit.set(structure);
+    
+    if (!prototype)
+        prototype = structure->storedPrototypeObject();
+}
+
+void LazyClassStructure::Initializer::setConstructor(PropertyName propertyName, JSObject* constructor)
+{
+    RELEASE_ASSERT(structure);
+    RELEASE_ASSERT(prototype);
+    RELEASE_ASSERT(!this->constructor);
+    
+    this->constructor = constructor;
+
+    prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, constructor, DontEnum);
+    if (!propertyName.isNull())
+        global->putDirect(vm, propertyName, constructor, DontEnum);
+    classStructure.m_constructor.set(vm, global, constructor);
+}
+
+void LazyClassStructure::Initializer::setConstructor(JSObject* constructor)
+{
+    String name;
+    if (InternalFunction* internalFunction = jsDynamicCast<InternalFunction*>(vm, constructor))
+        name = internalFunction->name();
+    else if (JSFunction* function = jsDynamicCast<JSFunction*>(vm, constructor))
+        name = function->name(vm);
+    else
+        RELEASE_ASSERT_NOT_REACHED();
+    
+    setConstructor(Identifier::fromString(&vm, name), constructor);
+}
+
+void LazyClassStructure::visit(SlotVisitor& visitor)
+{
+    m_structure.visit(visitor);
+    visitor.append(m_constructor);
+}
+
+void LazyClassStructure::dump(PrintStream& out) const
+{
+    out.print("<structure = ", m_structure, ", constructor = ", RawPointer(m_constructor.get()), ">");
+}
+
+} // namespace JSC
+