void CNFMgr::convertFormulaToCNFPosAND(const ASTNode& varphi,
ClauseList* defs) {
//****************************************
// (pos) AND ~> UNION
//****************************************
ASTVec::const_iterator it = varphi.GetChildren().begin();
convertFormulaToCNF(*it, defs);
ClauseList* psi = ClauseList::COPY(*(info[*it]->clausespos));
for (it++; it != varphi.GetChildren().end(); it++) {
convertFormulaToCNF(*it, defs);
CNFInfo* x = info[*it];
if (sharesPos(*x) == 1) {
psi->insert(x->clausespos);
delete (x->clausespos);
x->clausespos = NULL;
if (x->clausesneg == NULL) {
delete x;
info.erase(*it);
}
} else {
ClauseList::INPLACE_UNION(psi, *(x->clausespos));
reduceMemoryFootprintPos(*it);
}
}
if (renameAllSiblings)
{
assert(((unsigned)psi->size()) == varphi.GetChildren().size());
}
info[varphi]->clausespos = psi;
} //End of convertFormulaToCNFPosAND()
void CNFMgr::convertFormulaToCNFNegOR(const ASTNode& varphi,
ClauseList* defs)
{
//****************************************
// (neg) OR ~> UNION NOT
//****************************************
ASTVec::const_iterator it = varphi.GetChildren().begin();
convertFormulaToCNF(*it, defs);
ClauseList* psi = ClauseList::COPY(*(info[*it]->clausesneg));
reduceMemoryFootprintNeg(*it);
for (it++; it != varphi.GetChildren().end(); it++) {
convertFormulaToCNF(*it, defs);
CNFInfo* x = info[*it];
if (sharesNeg(*x) != 1) {
ClauseList::INPLACE_UNION(psi, *(x->clausesneg));
reduceMemoryFootprintNeg(*it);
} else {
// If this is the only use of "clausesneg", no reason to make a copy.
psi->insert(x->clausesneg);
// Copied from reduceMemoryFootprintNeg
delete x->clausesneg;
x->clausesneg = NULL;
if (x->clausespos == NULL) {
delete x;
info.erase(*it);
}
}
}
info[varphi]->clausesneg = psi;
} //End of convertFormulaToCNFNegOR()
