/*
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 Astl;
using namespace AstlULMcalc;
int main(int argc, char** argv) {
char* cmdname = *argv++; --argc;
if (argc > 1) {
std::cerr << "Usage: " << cmdname << " [filename]" << std::endl;
exit(1);
}
std::unique_ptr<std::locale> locale = nullptr;
try {
locale = std::make_unique<std::locale>("");
} catch (std::runtime_error&) {
locale = nullptr;
}
Scanner* scanner = 0;
std::ifstream* fin = 0;
try {
if (argc > 0) {
char* fname = *argv++; --argc;
fin = new std::ifstream(fname);
std::string filename(fname);
if (!*fin) {
std::cerr << cmdname << ": unable to open " << fname <<
" for reading" << std::endl;
exit(1);
}
if (locale) fin->imbue(*locale);
scanner = new Scanner(*fin, filename);
} else {
if (locale) std::cin.imbue(*locale);
scanner = new Scanner(std::cin, "stdin");
}
} catch (Astl::Exception &e) {
std::cerr << "from scanner: " << e.what() << std::endl;
}
NodePtr root;
try {
parser p(*scanner, root);
if (p.parse() == 0) {
std::cout << root << std::endl;
}
} catch (Astl::Exception &e) {
std::cerr << "from parser: " << e.what() << std::endl;
}
delete scanner;
}