AstAttributeMechanism.h

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// Author: Markus Schordan
// $Id: AstAttributeMechanism.h,v 1.3 2006/04/24 00:21:32 dquinlan Exp $

#ifndef ASTATTRIBUTEMECHANISM_H
#define ASTATTRIBUTEMECHANISM_H

#include "AttributeMechanism.h"

class SgNode;

class AstAttribute
   {
  // This class contains no data and is to be used as a based class (typically, but not required)
  // to support under-defined attributes to be attached to AST IR nodes.

     public:

      // DQ (7/4/2008): Added support for attibutes to specify edges in the dot graphs.
          class AttributeEdgeInfo
             {
               public:
                    SgNode* fromNode;
                    SgNode* toNode;
                    std::string label;
                    std::string options;

                    AttributeEdgeInfo (SgNode* fromNode, SgNode* toNode, std::string label, std::string options )
                       : fromNode(fromNode), toNode(toNode), label(label), options(options)
                       {
                       }

                   ~AttributeEdgeInfo () { fromNode = NULL; toNode = NULL; };
             };

       // DQ (7/5/2008): Added support for adding nodes to DOT graphs
          class AttributeNodeInfo
             {
               public:
                    SgNode* nodePtr;
                    std::string label;
                    std::string options;

                    AttributeNodeInfo (SgNode* nodePtr, std::string label, std::string options )
                       : nodePtr(nodePtr), label(label), options(options)
                       {
                       }

                   ~AttributeNodeInfo () {};
             };
#if 1
          AstAttribute();
          virtual ~AstAttribute();
          virtual std::string toString();

       // JH (12/21/2005): Adding Methods for storing the Ast Attribute data
          AstAttribute* constructor();
          std::string attribute_class_name();

       // Packing support (by JH)
          virtual int packed_size();
          virtual char* packed_data();
          virtual void unpacked_data( int size, char* data );

       // DQ (7/4/2008): Added DOT support.
          virtual std::string additionalNodeOptions();
       // virtual std::string additionalEdgeInfo();

       // virtual std::vector<std::pair<SgNode*,SgNode*> > additionalEdgeInfo();
          virtual std::vector<AttributeEdgeInfo> additionalEdgeInfo();
          virtual std::vector<AttributeNodeInfo> additionalNodeInfo();

       // DQ (7/27/2008): The support for deep copies of attributes on AST IR
       // node requires a virtual copy function that can be overwritten.
       // This acts just like a virtual constructor (same concept).
          virtual AstAttribute* copy();

       // DQ (7/27/2008): Added support to eliminate IR nodes in DOT graphs
       // (to tailor the presentation of information about ASTs).
          virtual bool commentOutNodeInGraph();
#else
          AstAttribute() {}
          virtual ~AstAttribute() {}
          virtual std::string toString() { return ""; }

       // JH (12/21/2005): Adding Methods for storing the Ast Attribute data
          AstAttribute* constructor() { return new AstAttribute(); }
          std::string attribute_class_name() { return "AstAttribute"; }

       // Packing support (by JH)
          virtual int packed_size() { return 0; }
          virtual char* packed_data() { return NULL; }
          virtual void unpacked_data( int size, char* data ) {}

       // DQ (7/4/2008): Added DOT support.
          virtual std::string additionalNodeOptions() { return ""; }
       // virtual std::string additionalEdgeInfo()    { return ""; }

       // virtual std::vector<std::pair<SgNode*,SgNode*> > additionalEdgeInfo();
          virtual std::vector<AttributeEdgeInfo> additionalEdgeInfo() { std::vector<AttributeEdgeInfo> v; return v; }
          virtual std::vector<AttributeNodeInfo> additionalNodeInfo() { std::vector<AttributeNodeInfo> v; return v; }

       // DQ (7/27/2008): The support for deep copies of attributes on AST IR
       // node requires a virtual copy function that can be overwritten.
       // This acts just like a virtual constructor (same concept).
          virtual AstAttribute* copy() { return new AstAttribute(*this); }

       // DQ (7/27/2008): Added support to eliminate IR nodes in DOT graphs
       // (to tailor the presentation of information about ASTs).
          virtual bool commentOutNodeInGraph() { return false; }
#endif

   };


class MetricAttribute : public AstAttribute
{
    public:
        MetricAttribute();
        MetricAttribute(double value, bool is_derived=false);

        MetricAttribute& operator+= (const MetricAttribute & other);
        MetricAttribute& operator-= (const MetricAttribute & other);
        MetricAttribute& operator*= (const MetricAttribute & other);
        MetricAttribute& operator/= (const MetricAttribute & other);

        virtual AstAttribute* constructor();
        virtual AstAttribute* copy();

        virtual std::string attribute_class_name();

        virtual int   packed_size();
        virtual char* packed_data();
        virtual void  unpacked_data( int size, char* data );

        virtual bool        isDerived() const;
        virtual double      getValue()  const;
        virtual void        setValue(double newVal);
        virtual std::string toString();

    protected:
        bool   is_derived_;
        double value_;
};


// DQ (6/28/2008):
// Since this is implemented using AttributeMechanism which is derived from
// std::map<Key,Value>, "Value" is a template parameter for "AstAttribute*"
// And so the copy constructor will copy the pointer.  This is OK, but it
// means that the AstAttribute objects are shared.  Alternatively, a copy
// constructor implemented in this class could be implemented to support
// deep copies.  This might be a good idea.
class AstAttributeMechanism : public AttributeMechanism<std::string,AstAttribute*>
   {
     public:
       // DQ (7/27/2008): Build a copy constructor that will do a deep copy
       // instead of calling the default copy constructor.
          AstAttributeMechanism ( const AstAttributeMechanism & X );

       // DQ (7/27/2008): Because we add an explicit copy constructor we
       // now need an explicit default constructor.
          AstAttributeMechanism ();
   };


// DQ (11/21/2009): Added new kind of attribute for handling regex trees.
class AstRegExAttribute : public AstAttribute
   {
     public:
          std::string expression;

          AstRegExAttribute();
          AstRegExAttribute(const std::string & s);
   };

#endif

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