PDG_Dependency.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.
 *
 * COMMENTS:
 */

#ifndef __PDG_DEPENDENCY_H__
#define __PDG_DEPENDENCY_H__

#include "PDG_API.h"
#include "PDG_NodeTypes.h"
#include "PDG_RegisteredType.h"

#include <UT/UT_StringHolder.h>

class PDG_GraphContext;
class PDG_Node;

class PDG_API PDG_Dependency : public PDG_TypeInstance
{
public:
                            PDG_Dependency(
                                const PDG_BaseType* type,
                                const PDGT_ValueArgs& extra_args,
                                const UT_StringHolder& key);
                            ~PDG_Dependency() override;

    int64                   getMemoryUsage(bool inclusive) const override;

    const UT_StringHolder&  key() const;
    void                    setUnresolved();
    bool                    resolve(PDG_GraphContext* context, PDG_Node* node);

    virtual bool            isResolved(
                                PDG_GraphContext* context,
                                PDG_Node* node) const;
    virtual bool            onResolve(PDG_GraphContext*, PDG_Node*) = 0;

    void                    addNode(PDG_Node* node);
    bool                    removeNode(PDG_Node* node);
    const PDG_NodeArray&    nodes() const;

protected:
    UT_StringHolder         myKey;

private:
    bool                    myResolvedFlag;
    PDG_NodeArray           myNodes;
};

#endif