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#include "zchaff_base.h"

//===================================================================
void CLitPoolElement::dump(ostream & os)
{ 
    os << (var_sign()?" -":" +") << var_index();
    if (is_watched())
	os << "*";
}

//===================================================================

void CClause::dump(ostream & os )
{ 
    if (status()==DELETED_CL) 
	os << "\t\t\t======removed=====";
    for (int i=0, sz=num_lits(); i<sz; ++i) 
	os << literal(i);
    os << endl;
}


bool CClause::self_check(void)
{
    if (status() == UNKNOWN_CL) 
	return true;
    assert (num_lits() > 0);
    int watched = 0;
    for (unsigned i=0; i< num_lits(); ++i) {
	assert (literal(i).is_literal());
	if (literal(i).is_watched())
	    ++ watched;
    }
    assert ( num_lits()==1 || watched == 2);		//either unit, or have two watched
    assert (!literal(num_lits() + 1).is_literal());	//this should be clause index
    return true;
}

//====================================================================
bool CVariable::self_check(void)
{
    for (unsigned i=0; i< 2; ++i) {
	vector<CLitPoolElement *> & w = watched(i);
	for (unsigned j=0; j< w.size(); ++j) {
	    assert ( w[j]->is_watched() );
	    assert ( (unsigned) w[j]->var_sign() == i ); 
	}
    }
    return true;
}

void CVariable::dump(ostream & os) 
{
    if (is_marked()) os << "*" ;
    os << "V: " << _value << "  DL: " << _dlevel  << "  POS: "<< _assgn_stack_pos 
       << "  Ante: " << _antecedent << endl;
    for (unsigned j=0; j< 2; ++j) {
	os << (j==0?"WPos ":"WNeg ") <<  "(" ;
	for (unsigned i=0; i< watched(j).size(); ++i )
	    os << watched(j)[i]->find_clause_index() << "  " ;
	os << ")" << endl;
    }
#ifdef KEEP_LIT_CLAUSES
    for (unsigned j=0; j< 2; ++j) {
	os << (j==0?"Pos ":"Neg ") <<  "(" ;
	for (int i=0; i< lit_clause(j).size(); ++i )
	    os << lit_clause(j)[i] << "  " ;
	os << ")" << endl;
    }
#endif    
    os << endl;
}


















