+static bool is_formal_celltype(const std::string &celltype)
+{
+ if(celltype == "assert" || celltype == "assume" || celltype == "live" || celltype == "fair" || celltype == "cover")
+ return true;
+ else
+ return false;
+}
+
+static void add_formal(RTLIL::Module *module, const std::string &celltype, const std::string &name, const std::string &enable_name)
+{
+ std::string escaped_name = RTLIL::escape_id(name);
+ std::string escaped_enable_name = (enable_name != "") ? RTLIL::escape_id(enable_name) : "";
+ RTLIL::Wire *wire = module->wire(escaped_name);
+ log_assert(is_formal_celltype(celltype));
+
+ if (wire == nullptr) {
+ log_error("Could not find wire with name \"%s\".\n", name.c_str());
+ }
+ else {
+ RTLIL::Cell *formal_cell = module->addCell(NEW_ID, "$" + celltype);
+ formal_cell->setPort(ID::A, wire);
+ if(enable_name == "") {
+ formal_cell->setPort(ID::EN, State::S1);
+ log("Added $%s cell for wire \"%s.%s\"\n", celltype.c_str(), module->name.str().c_str(), name.c_str());
+ }
+ else {
+ RTLIL::Wire *enable_wire = module->wire(escaped_enable_name);
+ if(enable_wire == nullptr)
+ log_error("Could not find enable wire with name \"%s\".\n", enable_name.c_str());
+
+ formal_cell->setPort(ID::EN, enable_wire);
+ log("Added $%s cell for wire \"%s.%s\" enabled by wire \"%s.%s\".\n", celltype.c_str(), module->name.str().c_str(), name.c_str(), module->name.str().c_str(), enable_name.c_str());
+ }
+ }
+}
+