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/****   , [ Implicative.cc ], 
Copyright (c) 2008 Universite d'Orleans - Jeremie Vautard 

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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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 *************************************************************************/

#include "Implicative.hh"

Implicative::Implicative(int ns, bool* quant, int* nv) {
    n=0;
    for (int i=0;i<ns;i++) {
        n += nv[i];
    }
    nbSpaces=ns;
    v=new void*[n];
    type_of_v = new VarType[n];
    Quantifiers = quant;
    whichSpaceOwns=new int[n];
    nbVarBySpace=new int[nbSpaces];
    rules=new MySpace*[ns];
    nbVarBySpace[0]=nv[0];
    rules[0]=new MySpace(nbVarBySpace[0]);
    for (int i=1;i<nbSpaces;i++) {
        nbVarBySpace[i]=nbVarBySpace[i-1]+nv[i];
        rules[i]=new MySpace(nbVarBySpace[i]);
    }
    goal=new MySpace(n);
    for(unsigned int i=0;i<n;i++) {
        int lespace=0;
        while (nbVarBySpace[lespace]<=i) lespace++;
        whichSpaceOwns[i]=lespace;
    }
    
    
    varInitialised=new bool[n];
    for (unsigned int i=0;i<n;i++) varInitialised[i]=false;
    currentDeclareSpace=0;

    optim = new Opts[nbSpaces];
    for (int i=0;i<nbSpaces;i++) 
        optim[i].opt_type = 0;
}



Implicative::~Implicative() {
    for (int i=0;i<nbSpaces;i++) {
            delete rules[i];
    }    
    
        delete goal;
    delete [] rules;
}


int Implicative::spaces() {
    return nbSpaces;
}


void Implicative::QIntVar(int var,int min,int max) {
    if (varInitialised[var]) {
        cout<<"Variable "<<var<<"  Already created !!"<<endl;
        abort();
    }
    
    for (int i=whichSpaceOwns[var];i<nbSpaces;i++) {
        rules[i]->v[var] = new IntVar(rules[i],min,max);
        rules[i]->type_of_v[var] = VTYPE_INT;
    }
    goal->v[var] = new IntVar(goal,min,max);
    goal->type_of_v[var] = VTYPE_INT;
    varInitialised[var]=true;
    type_of_v[var]=VTYPE_INT;
}


void Implicative::QIntVar(int var,IntSet dom) {
    if (varInitialised[var]) {
        cout<<"Variable "<<var<<"  Already created !!"<<endl;
        abort();
    }
    
    for (int i=whichSpaceOwns[var];i<nbSpaces;i++) {
        rules[i]->v[var] = new IntVar(rules[i],dom);
        rules[i]->type_of_v[var] = VTYPE_INT;
    }
    goal->v[var] = new IntVar(goal,dom);
    goal->type_of_v[var] = VTYPE_INT;
    varInitialised[var]=true;
    type_of_v[var]=VTYPE_INT;
}


void Implicative::QBoolVar(int var) {
    if (varInitialised[var]) {
        cout<<"Variable "<<var<<" Already created !!"<<endl;
        abort();
    }
    
    for (int i=whichSpaceOwns[var];i<nbSpaces;i++) {
        rules[i]->v[var] = new BoolVar(rules[i],0,1);
        rules[i]->type_of_v[var]=VTYPE_BOOL;
    }
    goal->v[var] = new BoolVar(goal,0,1);
    goal->type_of_v[var]=VTYPE_BOOL;
    varInitialised[var]=true;
    type_of_v[var]=VTYPE_BOOL;
}

MySpace* Implicative::space() {
    if (currentDeclareSpace<nbSpaces)
        return rules[currentDeclareSpace];
    if (currentDeclareSpace==nbSpaces)
        return goal;
    return NULL;
}


IntVar Implicative::var(int n) {
    if (!varInitialised[n]) {
        cout<<"Variable "<<n<<" not initialized !"<<endl;
        abort();
    }
    if (type_of_v[n] != VTYPE_INT) {
        cout<<"Variable "<<n<<" is not INT"<<endl;
        abort();
    }
    return *(static_cast<IntVar*>(space()->v[n]));
}


BoolVar Implicative::bvar(int n) {
    if (!varInitialised[n]) {
        cout<<"Variable "<<n<<" not initialized !"<<endl;
        abort();
    }
    if (type_of_v[n] != VTYPE_BOOL){
        cout<<"Variable "<<n<<" is not BOOL"<<endl;
        abort();
    }
    return *(static_cast<BoolVar*>(space()->v[n]));
}


int Implicative::nextScope() {
    if (currentDeclareSpace == -1) return -1;
    currentDeclareSpace++;
    if (currentDeclareSpace>nbSpaces) return -1;
    return currentDeclareSpace;
}

void Implicative::makeStructure() {
    for (unsigned int i=0;i<n;i++) {
        if (varInitialised[i] == false) {
            cout<<"Can't make structure : variable "<<i<<" not initialised"<<endl;
            abort();
        }
    }
    
    for (int i=0;i<nbSpaces;i++) {
        if (!Quantifiers[i])
            if (optim[i].vars.empty())
                optimize(i,0,getExistential( (i==0)?0:nbVarBySpace[i-1]));
    }
}


OptVar* Implicative::getAggregate(int scope, OptVar* opt, Aggregator* agg) {
    if (!Quantifiers[scope]) {cout<<"Try to get aggregate on existential scope"<<endl;abort();} // aggregateur sur existentiel
    if (opt->getScope() < scope) {cout<<"aggregated variable out of aggregator scope"<<endl;abort();} // Variable aggrŽgŽe avant aggregateur
    for (int i=scope+1; i<opt->getScope();i++) // Universelle entre aggregateur et variable aggrŽgŽe
        if (Quantifiers[i]) 
        {cout<<"Universal scope between variable and aggregator"<<endl;abort();}
    
    UnivOptVar* zeopt = new UnivOptVar(scope,opt,agg);
    optim[scope].vars.push_back(zeopt);
    return zeopt;
}


OptVar* Implicative::getExistential(int var) {
    if (Quantifiers[whichSpaceOwns[var]]) {cout<<"can't create existOptVar : variable "<<var<<" is universal"<<endl;abort();} // Var est universelle
    ExistOptVar* opt = new ExistOptVar(var,whichSpaceOwns[var]);
    return opt;
}


void Implicative::optimize(int scope, int optType,OptVar* var) {
    if (var->getScope() < scope) {cout<<"optvar out of optimizing scope"<<endl;abort();} // Variable ˆ optimiser avant dŽcideur
    for (int i=scope; i<var->getScope();i++) {
        if (Quantifiers[i])  // universelle entre variable et dŽcideur
        { cout<<"universal scope between variable and optimizing scope"<<endl;abort();}
    }
//    cout<<"I add an optVar* for scope "<<scope<<endl;
    optim[scope].vars.clear();
    optim[scope].vars.push_back(var);
    optim[scope].opt_type=optType;
}


bool Implicative::qt_of_var(int v) {
    return Quantifiers[whichSpaceOwns[v]];
}


MySpace* Implicative::getSpace(int scope) {
    if (scope<0) {
        cout<<"I return NULL coz of bad scope value"<<endl;
        return NULL;
    }
    if (scope>nbSpaces) {
        cout<<"I return NULL coz of bad scope value"<<endl;
        return NULL;
    }
    if (scope==nbSpaces) {
        if (goal->status() == SS_FAILED) {
            cout<<"I return NULL coz goal is failed"<<endl;
            return NULL;
        }
//        cout<<"I return the goal"<<endl;
        return static_cast<MySpace*>(goal->clone());
    }
    if (rules[scope]->status() == SS_FAILED) {
        cout<<"I return NULL coz scope "<<scope<<" is failed"<<endl;
        return NULL;
    }
//    cout<<"I return the rule "<<scope<<endl;
    return (static_cast<MySpace*>(rules[scope]->clone()));
}


MySpace* Implicative::getGoal() {
        if (goal->status() == SS_FAILED) return NULL;
        return static_cast<MySpace*>(goal->clone());
}


int Implicative::getOptType(int scope) {
    if (Quantifiers[scope]) {cout<<"Try to get OptType on universal scope"<<endl;abort();}
    return optim[scope].opt_type;
}


OptVar* Implicative::getOptVar(int scope) {
    if (Quantifiers[scope]) abort();
//    if (optim[scope].vars.size() == 0) cout<<"no optvar to return, ca va planter...";
//    cout<<"getoptvar returns optvar* of scope "<<scope;
    return static_cast<OptVar*>(optim[scope].vars[0]);
}

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