OP/OP_GlobContext.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Ondrej Kos
 *      Side Effects Software Inc
 *      123 Front Street West, Suite 1401
 *      Toronto, Ontario
 *      Canada   M5J 2M2
 *      416-504-9876
 *
 * NAME:        OP_GlobContext.h (OP  Library, C++)
 *
 * COMMENTS:
 *   An object passed to various globbing functions/methods that abstracts
 *   license checks.
 */

#ifndef __OP_GlobContext__
#define __OP_GlobContext__

#include "OP_API.h"

class OP_Node;
class OP_NetworkBox;

//
// An OP_GlobContext object can cache some data across multiple queries, which
// will only remain valid for a particular security context.  Consequently, it
// is not a good idea to store these objects.
//
class OP_API OP_GlobContext
{
public:
    // An OP_GlobContext() initialized by this constructor will look up the
    // current context from the script access manager.
    OP_GlobContext()
    {
        // Intentionally initialize the minimum set of members required for
        // our code paths.
        myOverrideContextFlag = false;
        myContextLookupPendingFlag = true;
    }

    OP_GlobContext(const OP_Node *context_node)
    {
        // Intentionally initialize the minimum set of members required for
        // our code paths.
        myContextNode = context_node;
        myContextRoot = 0;
        myOverrideContextFlag = true;
    }

    bool         canSearchContents(const OP_Node *);
    bool         canSearchContents(const OP_NetworkBox *);
    bool         canSearchParms(const OP_Node *);

private:
    void         resolveAndCacheContext(int thread);

    const OP_Node       *myContextNode;
    const OP_Node       *myContextRoot;
    void                *myOpaqueData;
    bool                 myOverrideContextFlag;
    bool                 myContextLookupPendingFlag;
    bool                 myContextInternalEvalFlag;
};

#endif

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