int main() {
cout << "Enter file name for lexical rules" << endl;
string file = "test";
cin >> file;
FileReader *f = new FileReader();
f->readTheFile((char*) file.c_str());
f->initializeForNFA();
NFA *n = new NFA(f->regularExpressions);
n->defs = f->defs;
n->matchedExps = f->expressionsID;
n->createAll();
cout << " Start Conversion NFA to DFA " << endl;
vector<char> all_inputs;
for (set<char>::iterator i = n->input.begin(); i != n->input.end(); i++) {
all_inputs.push_back(*i);
}
DFA_Builder* DFA = new DFA_Builder(n->NFATable, n->matchedExps, all_inputs);
cout << " Conversion Function " << endl;
DFA->NFA_to_DFA();
cout << "Enter file name for syntax rules" << endl;
string syntax_file = "syntax_test.txt";
cin >> syntax_file;
// read syntax rules file and generate productions
SyntaxRulesParser* syntaxParser = new SyntaxRulesParser();
syntaxParser->parse(syntax_file.c_str());
vector<Production> prods = syntaxParser->productions;
printf("Print Productions...\n");
for (size_t i = 0; i < prods.size(); i++) {
Production prod = prods[i];
printf("%s -> ", prod.LHS.c_str());
for (size_t j = 0; j < prod.RHS.size(); j++) {
for (size_t k = 0; k < prod.RHS[j].size(); k++)
printf("%s ", prod.RHS[j][k].name.c_str());
puts("");
if (j < prod.RHS.size() - 1)
printf(" |");
}
puts("");
}
cout << endl;
// Generate parser
ParserGenerator* parserGenerator = new ParserGenerator(syntaxParser->productions , syntaxParser->LHS_index);
bool isLL1 = parserGenerator->generateParser();
if(!isLL1)
{
cout << "Not LL(1) grammar" << endl;
return 0;
}
// read program source file
cout << "Enter file name for source code" << endl;
string src_file = "src_file";
cin >> src_file;
Simulator* sim = new Simulator(DFA->DFA, DFA->patterns);
sim->open_file(src_file.c_str());
// start reading src file tokens and parse it using LL(1) parser
// freopen("Parser_output.txt", "w", stdout);
parserGenerator->SimuParser(sim);
// string lex;
// lex = sim->next_token().first;
// while (!lex.empty())
// {
// cout << lex << endl;
// lex = sim->next_token().first;
// }
fclose(stdout);
// test_parser();
// test_parser_parseFile();
return 0;
}
