lean2/src/shell/lean.cpp

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#include <iostream>
#include <fstream>
#include <signal.h>
#include "version.h"
#include "printer.h"
#include "interruptable_ptr.h"
#include "lean_parser.h"
using namespace lean;
static interruptable_ptr<shell> g_lean_shell;
static void on_ctrl_c(int) {
g_lean_shell.set_interrupt(true);
}
bool lean_shell() {
std::cout << "Lean (version " << LEAN_VERSION_MAJOR << "." << LEAN_VERSION_MINOR << ")\n";
std::cout << "Type Ctrl-D to exit or 'Help.' for help."<< std::endl;
frontend f;
shell sh(f);
scoped_set_interruptable_ptr<shell> set(g_lean_shell, &sh);
signal(SIGINT, on_ctrl_c);
return sh();
}
int main(int argc, char ** argv) {
if (argc == 1) {
return lean_shell() ? 0 : 1;
} else {
bool ok = true;
frontend f;
for (int i = 1; i < argc; i++) {
std::ifstream in(argv[i]);
parser p(f, in, false, false);
if (!p())
ok = false;
}
return ok ? 0 : 1;
}
}