Variable.h

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 * See the dyninst/COPYRIGHT file for copyright information.
 * 
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 * on an AS IS basis, and do not warrant its validity or performance.
 * We reserve the right to update, modify, or discontinue this
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 * other person or entity with proprietary rights in Paradyn) are
 * under no obligation to provide either maintenance services,
 * update services, notices of latent defects, or correction of
 * defects for Paradyn.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
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 */

#if !defined(_Variable_h_)
#define _Variable_h_

#include "Annotatable.h"
#include "Serialization.h"
#include "Symtab.h"
#include "Aggregate.h"
#include "dyn_regs.h"
#include "VariableLocation.h"

//class Dyninst::SymtabAPI::Variable;
SYMTAB_EXPORT std::ostream &operator<<(std::ostream &os, const Dyninst::SymtabAPI::Variable &);

namespace Dyninst {
namespace SymtabAPI {


class Symbol;
class Symtab;
class Aggregate;
class Function;

class Variable : public Aggregate, public Serializable, public AnnotatableSparse {
    friend class Symtab;
    friend std::ostream &::operator<<(std::ostream &os, const Dyninst::SymtabAPI::Variable &);

    private:
   SYMTAB_EXPORT Variable(Symbol *sym);
   SYMTAB_EXPORT static Variable *createVariable(Symbol *sym);
   
 public:
   SYMTAB_EXPORT Variable();
    /* Symbol management */
    SYMTAB_EXPORT bool removeSymbol(Symbol *sym);      

   SYMTAB_EXPORT void setType(Type *type);
   SYMTAB_EXPORT Type *getType();

   SYMTAB_EXPORT Serializable *serialize_impl(SerializerBase *sb, 
           const char *tag = "Variable") THROW_SPEC (SerializerError);
   SYMTAB_EXPORT bool operator==(const Variable &v);

 private:

   Type *type_;
};

class localVar : public Serializable, public AnnotatableSparse
{
    friend class typeCommon;
    friend class localVarCollection;

    std::string name_;
    Type *type_;
    std::string fileName_;
    int lineNum_;
        Function *func_;
    std::vector<VariableLocation> locs_;
        // We start with an abstract location that may include "the frame
        // pointer" as a register. Once a user requests the location list
        // we concretize it and set this flag.
        bool locsExpanded_;
        
    // scope_t scope;

        void expandLocation(const VariableLocation &var,
                            std::vector<VariableLocation> &ret);

    public:
    SYMTAB_EXPORT localVar() :
        type_(NULL), lineNum_(-1), func_(NULL), locsExpanded_(false) {}
    //  Internal use only
    localVar(std::string name,  Type *typ, std::string fileName, 
            int lineNum, Function *f, 
            std::vector<VariableLocation> *locs = NULL);
            
    // Copy constructor
    localVar(localVar &lvar);
    bool addLocation(VariableLocation &location);
    SYMTAB_EXPORT ~localVar();
    SYMTAB_EXPORT void fixupUnknown(Module *);

    public:
    //  end of functions for internal use only
    SYMTAB_EXPORT std::string &getName();
    SYMTAB_EXPORT Type *getType();
    SYMTAB_EXPORT bool setType(Type *newType);
    SYMTAB_EXPORT int  getLineNum();
    SYMTAB_EXPORT std::string &getFileName();
    SYMTAB_EXPORT std::vector<VariableLocation> &getLocationLists();
    SYMTAB_EXPORT bool operator==(const localVar &l);
    SYMTAB_EXPORT Serializable *serialize_impl(SerializerBase *, 
            const char * = "localVar") THROW_SPEC(SerializerError);
};

}
}


#endif