/*
Copyright (C) 2009-2019 Andreas Franz Borchert
Michael Christian Lehn
----------------------------------------------------------------------------
Astl-ULMcalc is free software; you can redistribute it
and/or modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either version
2 of the License, or (at your option) any later version.
Astl-ULMcalc is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <locale>
#include <stdexcept>
#include <astl/token.hpp>
#include "location.hpp"
#include "parser.hpp"
#include "scanner.hpp"
#include "yytname.hpp"
using namespace std;
using namespace Astl;
using namespace AstlULMcalc;
int main(int argc, char** argv)
{
char* cmdname = *argv++; --argc;
if (argc > 1) {
cerr << "Usage: " << cmdname << " [filename]" << endl;
exit(1);
}
std::unique_ptr<std::locale> locale = nullptr;
try {
locale = std::make_unique<std::locale>("");
} catch (std::runtime_error&) {
locale = nullptr;
}
try {
Scanner* scanner;
ifstream* fin = 0;
if (argc > 0) {
char* fname = *argv++; --argc;
fin = new ifstream(fname);
string filename(fname);
if (!*fin) {
cerr << cmdname << ": unable to open " << fname <<
" for reading" << endl;
exit(1);
}
if (locale) {
fin->imbue(*locale);
}
scanner = new Scanner(*fin, filename);
} else {
if (locale) {
std::cin.imbue(*locale);
}
scanner = new Scanner(cin, "stdin");
}
AstlULMcalc::location loc;
semantic_type yylval;
int token;
while ((token = scanner->get_token(yylval, loc)) != 0) {
cout << yytname[token - 255];
if (yylval) {
cout << " \"" << yylval->get_token().get_text() << '"';
yylval = NodePtr(nullptr);
}
cout << " at " << make_loc(loc);
cout << endl;
}
delete scanner;
if (fin) {
delete fin;
}
}
catch (Astl::Exception &e) {
std::cerr << "lexer: " << e.what() << std::endl;
}
}