JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / bytecode / GetByIdVariant.h

diff --git a/bytecode/GetByIdVariant.h b/bytecode/GetByIdVariant.h
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+/*
+ * Copyright (C) 2014 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. ``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
+ * 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. 
+ */
+
+#ifndef GetByIdVariant_h
+#define GetByIdVariant_h
+
+#include "IntendedStructureChain.h"
+#include "JSCJSValue.h"
+#include "PropertyOffset.h"
+#include "StructureSet.h"
+
+namespace JSC {
+
+class GetByIdStatus;
+struct DumpContext;
+
+class GetByIdVariant {
+public:
+    GetByIdVariant(
+        const StructureSet& structureSet = StructureSet(),
+        PropertyOffset offset = invalidOffset, JSValue specificValue = JSValue(),
+        PassRefPtr<IntendedStructureChain> chain = nullptr)
+        : m_structureSet(structureSet)
+        , m_chain(chain)
+        , m_specificValue(specificValue)
+        , m_offset(offset)
+    {
+        if (!structureSet.size()) {
+            ASSERT(offset == invalidOffset);
+            ASSERT(!specificValue);
+            ASSERT(!chain);
+        }
+    }
+    
+    bool isSet() const { return !!m_structureSet.size(); }
+    bool operator!() const { return !isSet(); }
+    const StructureSet& structureSet() const { return m_structureSet; }
+    IntendedStructureChain* chain() const { return const_cast<IntendedStructureChain*>(m_chain.get()); }
+    JSValue specificValue() const { return m_specificValue; }
+    PropertyOffset offset() const { return m_offset; }
+    
+    void dump(PrintStream&) const;
+    void dumpInContext(PrintStream&, DumpContext*) const;
+    
+private:
+    friend class GetByIdStatus;
+    
+    StructureSet m_structureSet;
+    RefPtr<IntendedStructureChain> m_chain;
+    JSValue m_specificValue;
+    PropertyOffset m_offset;
+};
+
+} // namespace JSC
+
+#endif // GetByIdVariant_h
+