virtual void visit(AstVarRef* nodep, AstNUser*) {
if (nodep->lvalue() && !nodep->user2()) {
nodep->user2(true); // mark this ref as visited
AstVar* key = nodep->varp();
VarMap::iterator it = m_lhsmapp->find(key);
if (it == m_lhsmapp->end()) {
// this key does not exist yet, so create it
RefVec* refs = new RefVec();
refs->push_back(nodep);
m_lhsmapp->insert(pair<AstVar*, RefVec*>(key, refs));
} else {
(*it).second->push_back(nodep);
}
nodep->user3p(m_sel); // attach the sel to this varref
}
nodep->iterateChildren(*this);
}
