const string
V3NtkHandler::getNetRecurExpression(const V3NetId& id) const {
assert (_ntk); assert (id.id < _ntk->getNetSize()); string name = "";
const V3GateType& type = _ntk->getGateType(id); assert (V3_XD > type);
if (V3_FF >= type) return (id.cp ? V3AuxNameInvPrefix : "") + v3Int2Str(id.id);
else if (V3_MODULE == type) {
Msg(MSG_WAR) << "Currently Expression Over Module Instances has NOT Been Implemented !!" << endl;
}
else {
if (dynamic_cast<V3BvNtk*>(_ntk)) {
assert (AIG_FALSE < type);
if (isV3PairType(type)) {
const string name1 = getNetExpression(_ntk->getInputNetId(id, 0)); assert (name1.size());
const string name2 = getNetExpression(_ntk->getInputNetId(id, 1)); assert (name2.size());
if (BV_MERGE == type) name = "{" + name1 + ", " + name2 + "}";
else {
switch (type) {
case BV_AND : name = "(" + name1 + " & " + name2 + ")"; break;
case BV_XOR : name = "(" + name1 + " ^ " + name2 + ")"; break;
case BV_ADD : name = "(" + name1 + " + " + name2 + ")"; break;
case BV_SUB : name = "(" + name1 + " - " + name2 + ")"; break;
case BV_MULT : name = "(" + name1 + " * " + name2 + ")"; break;
case BV_SHL : name = "(" + name1 + " << " + name2 + ")"; break;
case BV_SHR : name = "(" + name1 + " >> " + name2 + ")"; break;
case BV_DIV : name = "(" + name1 + " / " + name2 + ")"; break;
case BV_MODULO : name = "(" + name1 + " % " + name2 + ")"; break;
case BV_EQUALITY : return "(" + name1 + (id.cp ? " != " : " == ") + name2 + ")";
case BV_GEQ : return "(" + name1 + (id.cp ? " < " : " >= ") + name2 + ")";
default : assert (0);
}
}
}
else if (isV3ReducedType(type)) {
const string name1 = getNetExpression(_ntk->getInputNetId(id, 0)); assert (name1.size());
switch (type) {
case BV_RED_AND : name = "(&(" + name1 + "))"; break;
case BV_RED_OR : name = "(|(" + name1 + "))"; break;
case BV_RED_XOR : name = "(^(" + name1 + "))"; break;
default : assert (0);
}
}
else if (BV_MUX == type) {
const string fName = getNetExpression(_ntk->getInputNetId(id, 0)); assert (fName.size());
const string tName = getNetExpression(_ntk->getInputNetId(id, 1)); assert (tName.size());
const string sName = getNetExpression(_ntk->getInputNetId(id, 2)); assert (sName.size());
name = "(" + sName + " ? " + tName + " : " + fName + ")";
}
else if (BV_SLICE == type) {
const string name1 = getNetExpression(_ntk->getInputNetId(id, 0)); assert (name1.size());
const uint32_t msb = dynamic_cast<V3BvNtk*>(_ntk)->getInputSliceBit(id, true);
const uint32_t lsb = dynamic_cast<V3BvNtk*>(_ntk)->getInputSliceBit(id, false);
const uint32_t width = _ntk->getNetWidth(_ntk->getInputNetId(id, 0)); assert (width);
name = ((msb >= lsb) && (width == (1 + msb - lsb))) ? name1 :
(msb == lsb) ? ("(" + name1 + ")[" + v3Int2Str(msb) + "]") :
("(" + name1 + ")[" + v3Int2Str(msb) + ":" + v3Int2Str(lsb) + "]");
}
else {
assert (BV_CONST == type);
const V3BitVecX value = dynamic_cast<V3BvNtk*>(_ntk)->getInputConstValue(id);
return v3Int2Str(value.size()) + "'b" + value.regEx();
}
}
else {
assert (AIG_FALSE >= type);
if (AIG_NODE == type) {
const string name1 = getNetExpression(_ntk->getInputNetId(id, 0)); assert (name1.size());
const string name2 = getNetExpression(_ntk->getInputNetId(id, 1)); assert (name2.size());
name = "(" + name1 + " && " + name2 + ")";
}
else {
assert (AIG_FALSE == type);
return (id.cp ? "AIGER_TRUE" : "AIGER_FALSE");
}
}
}
return (id.cp ? V3AuxNameInvPrefix : "") + name;
}
