int argc,

char* argv[]

)

-> int

{

using namespace cpp2;

cmdline.set_args(argc, argv);

cmdline.process_flags();

if (cmdline.help_was_requested()) {

return EXIT_SUCCESS;

}

if (cmdline.arguments().empty()) {

std::cerr << "cppfront: error: no input files (try -help)\n";

return EXIT_FAILURE;

}

// For each Cpp2 source file

int exit_status = EXIT_SUCCESS;

for (auto const& arg : cmdline.arguments())

{

auto& out = flag_cpp1_filename != "stdout" ? std::cout : std::cerr;

out << arg.text << "...";

// Load + lex + parse + sema

cppfront c(arg.text);

// Generate Cpp1 (this may catch additional late errors)

auto count = c.lower_to_cpp1();

// If there were no errors, say so and generate Cpp1

if (c.had_no_errors())

{

if (!c.has_cpp1()) {

out << " ok (all Cpp2, passes safety checks)\n";

}

else if (c.has_cpp2()) {

out << " ok (mixed Cpp1/Cpp2, Cpp2 code passes safety checks)\n";

}

else {

out << " ok (all Cpp1)\n";

}

if (flag_verbose) {

out << " Cpp1: " << print_with_thousands(count.cpp1_lines) << " line" << (count.cpp1_lines != 1 ? "s" : "");

out << "\n Cpp2: " << print_with_thousands(count.cpp2_lines) << " line" << (count.cpp2_lines != 1 ? "s" : "");

auto total = count.cpp1_lines + count.cpp2_lines;

if (total > 0) {

out << " (";

if (count.cpp1_lines == 0) {

out << 100;

}

else if (count.cpp2_lines / count.cpp1_lines > 25) {

out << std::setprecision(3)

<< 100.0 * count.cpp2_lines / total;

}

else {

out << 100 * count.cpp2_lines / total;

}

out << "%)";

}

}

out << "\n";

}

// Otherwise, print the errors

else

{

std::cerr << "\n";

c.print_errors();

std::cerr << "\n";

exit_status = EXIT_FAILURE;

}

// And, if requested, the debug information

if (flag_debug_output) {

c.debug_print();

}

}

if (flag_internal_debug) {

stackinstr::print_deepest();

stackinstr::print_largest();

}

return exit_status;