JavaScriptCore-7600.1.4.9.tar.gz

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

diff --git a/bytecode/ResolveOperation.h b/bytecode/ResolveOperation.h
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--- a/bytecode/ResolveOperation.h
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-/*
- * Copyright (C) 2012 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 ResolveOperation_h
-#define ResolveOperation_h
-
-#include "PropertyOffset.h"
-#include "WriteBarrier.h"
-
-#include <wtf/Vector.h>
-
-namespace JSC {
-
-class Structure;
-
-struct ResolveOperation {
-    typedef enum {
-        Fail,
-        SetBaseToUndefined,
-        ReturnScopeAsBase,
-        SetBaseToScope,
-        SetBaseToGlobal,
-        GetAndReturnScopedVar,
-        GetAndReturnGlobalVar,
-        GetAndReturnGlobalVarWatchable,
-        SkipTopScopeNode,
-        SkipScopes,
-        ReturnGlobalObjectAsBase,
-        GetAndReturnGlobalProperty,
-        CheckForDynamicEntriesBeforeGlobalScope
-    } ResolveOperationType;
-
-    ResolveOperationType m_operation;
-    WriteBarrier<Structure> m_structure;
-    union {
-        PropertyOffset m_offset;
-        WriteBarrier<Unknown>* m_registerAddress;
-        int m_scopesToSkip;
-        int m_activationRegister;
-    };
-    static ResolveOperation getAndReturnScopedVar(PropertyOffset offset)
-    {
-        ResolveOperation op;
-        op.m_operation = GetAndReturnScopedVar;
-        op.m_offset = offset;
-        return op;
-    }
-    static ResolveOperation checkForDynamicEntriesBeforeGlobalScope()
-    {
-        ResolveOperation op;
-        op.m_operation = CheckForDynamicEntriesBeforeGlobalScope;
-        return op;
-    }
-
-    static ResolveOperation getAndReturnGlobalVar(WriteBarrier<Unknown>* registerAddress, bool couldBeWatched)
-    {
-        ResolveOperation op;
-        op.m_operation = couldBeWatched ? GetAndReturnGlobalVarWatchable : GetAndReturnGlobalVar;
-        op.m_registerAddress = registerAddress;
-        return op;
-    }
-    static ResolveOperation getAndReturnGlobalProperty()
-    {
-        ResolveOperation op;
-        op.m_operation = GetAndReturnGlobalProperty;
-        return op;
-    }
-    static ResolveOperation resolveFail()
-    {
-        ResolveOperation op;
-        op.m_operation = Fail;
-        return op;
-    }
-    static ResolveOperation skipTopScopeNode(int activationRegister)
-    {
-        ResolveOperation op;
-        op.m_operation = SkipTopScopeNode;
-        op.m_activationRegister = activationRegister;
-        return op;
-    }
-    static ResolveOperation skipScopes(int scopesToSkip)
-    {
-        ResolveOperation op;
-        op.m_operation = SkipScopes;
-        op.m_scopesToSkip = scopesToSkip;
-        return op;
-    }
-    static ResolveOperation returnGlobalObjectAsBase()
-    {
-        ResolveOperation op;
-        op.m_operation = ReturnGlobalObjectAsBase;
-        return op;
-    }
-    static ResolveOperation setBaseToGlobal()
-    {
-        ResolveOperation op;
-        op.m_operation = SetBaseToGlobal;
-        return op;
-    }
-    static ResolveOperation setBaseToUndefined()
-    {
-        ResolveOperation op;
-        op.m_operation = SetBaseToUndefined;
-        return op;
-    }
-    static ResolveOperation setBaseToScope()
-    {
-        ResolveOperation op;
-        op.m_operation = SetBaseToScope;
-        return op;
-    }
-    static ResolveOperation returnScopeAsBase()
-    {
-        ResolveOperation op;
-        op.m_operation = ReturnScopeAsBase;
-        return op;
-    }
-};
-
-typedef Vector<ResolveOperation> ResolveOperations;
-
-struct PutToBaseOperation {
-    PutToBaseOperation(bool isStrict)
-        : m_kind(Uninitialised)
-        , m_isDynamic(false)
-        , m_isStrict(isStrict)
-        , m_predicatePointer(0)
-    {
-
-    }
-    enum Kind { Uninitialised, Generic, Readonly, GlobalVariablePut, GlobalVariablePutChecked, GlobalPropertyPut, VariablePut };
-    union {
-        Kind m_kind : 8;
-        uint8_t m_kindAsUint8;
-    };
-    bool m_isDynamic : 8;
-    bool m_isStrict : 8;
-    union {
-        bool* m_predicatePointer;
-        unsigned m_scopeDepth;
-    };
-    WriteBarrier<Structure> m_structure;
-    union {
-        // Used for GlobalVariablePut
-        WriteBarrier<Unknown>* m_registerAddress;
-
-        // Used for GlobalPropertyPut and VariablePut
-        struct {
-            PropertyOffset m_offset;
-            int32_t m_offsetInButterfly;
-        };
-    };
-};
-}
-
-#endif // ResolveOperation_h