Program Listing for File instantiationIP.h

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/************************************************************************
 * Copyright 2008, Strathclyde Planning Group,
 * Department of Computer and Information Sciences,
 * University of Strathclyde, Glasgow, UK
 * http://planning.cis.strath.ac.uk/
 *
 * Maria Fox, Richard Howey and Derek Long - VAL
 * Stephen Cresswell - PDDL Parser
 *
 * This file is part of VAL, the PDDL validator.
 *
 * VAL is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * VAL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with VAL.  If not, see <http://www.gnu.org/licenses/>.
 *
 ************************************************************************/

#ifndef __INSTANTIATION
#define __INSTANTIATION
#include <vector>
#include <map>
#include "FastEnvironment.h"
#include <algorithm>
#include <iterator>


using std::ostream_iterator;
class operator_;
class problem;
class TypeChecker;
class pddl_type;
class const_symbol;

using std::vector;
using std::map;
using std::deque;

#include "TypedAnalyser.h"

class instantiatedOp;
class Literal;
typedef deque<instantiatedOp *> OpStore;



struct LiteralParameterIterator {
    FastEnvironment * env;
    parameter_symbol_list::const_iterator pi;

    LiteralParameterIterator(FastEnvironment * f,parameter_symbol_list::const_iterator p) :
        env(f), pi(p) {};

    const_symbol * operator*()
    {
        return (*env)[*pi];
    };

    LiteralParameterIterator & operator++()
    {
        ++pi;
        return *this;
    };

    bool operator==(LiteralParameterIterator & li)
    {
        return pi==li.pi;
    };

    bool operator!=(LiteralParameterIterator & li)
    {
        return pi!=li.pi;
    };
};

class Literal {
private:
    const proposition * prop;
    FastEnvironment * env;
public:
    Literal(const proposition * p, FastEnvironment * e) : prop(p), env(e) {};

    struct LiteralParametersOutput {

        const FastEnvironment & bindings;

        LiteralParametersOutput(const FastEnvironment & bs) : bindings(bs) {};
        string operator()(const parameter_symbol * v) const
        {
            return bindings[v]->getName();
        };
    };

    void write(ostream & o) const
    {
        o << "  " << prop->head->getName() << "_";
                transform(prop->args->begin(),prop->args->end(),
                    ostream_iterator<string>(o,"_"),LiteralParametersOutput(*env));
    };

    const pred_symbol * getHead() const
    {
        return prop->head;
    };

    LiteralParameterIterator begin()
    {return LiteralParameterIterator(env,prop->args->begin());};
    LiteralParameterIterator end()
    {return LiteralParameterIterator(env,prop->args->end());};
};

ostream & operator<<(ostream & o,const Literal & io);

class LiteralStore {
private:
    typedef map<const pred_symbol *,CascadeSet<const_symbol *> > PredMap;

    PredMap literals;
    deque<Literal *> allLits;
public:

    void write(ostream & o) const
    {
        for(deque<Literal*>::const_iterator i = allLits.begin();i != allLits.end();++i)
        {
            o << **i << "\n";
        };
    };
    void write(instantiatedOp* op,ostream & o) const;

    void insert(Literal * lit);

};

class instantiatedOp {
private:
    const operator_ * op;
    FastEnvironment * env;

    static OpStore instOps;

    static map<pddl_type *,vector<const_symbol*> > values;

    struct ActionParametersOutput {

        const FastEnvironment & bindings;

        ActionParametersOutput(const FastEnvironment & bs) : bindings(bs) {};
        string operator()(const var_symbol * v) const
        {
            return bindings[v]->getName();
        };
    };

    static LiteralStore literals;
    LiteralStore pres;
    LiteralStore adds;
    LiteralStore dels;

public:
    instantiatedOp(const operator_ * o,FastEnvironment * e) : op(o), env(e) {};
    static void instantiate(const operator_ * op, const problem * p,TypeChecker & tc);
    ~instantiatedOp() {delete env;};

    void write(ostream & o) const
    {
        o << "  " << op->name->getName() << "_";
        transform(op->parameters->begin(),op->parameters->end(),
                    ostream_iterator<string>(o,"_"),ActionParametersOutput(*env));
    };

    static void writeAll(ostream & o);
    static int howMany() {return instOps.size();};

    static void createAllLiterals(problem * p);
    void collectLiterals();
    static void writeAllLiterals(ostream & o);
    void writePres(ostream & o) const;
    void writeAdds(ostream & o) const;
    void writeDels(ostream & o) const;
};


ostream & operator<<(ostream & o,const instantiatedOp & io);


#endif