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/* SPDX-License-Identifier: copyleft-next-0.3.1 */
/* Copyright 2024 Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
/**
* @file main.c
*
* Compiler main file, controls compilation and command line
* handling.
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <fwd/debug.h>
#include <fwd/compiler.h>
/**
* String describing compiler usage.
* @todo I suspect backends might want more flags, come up with
* some way to make flag handling more generic
*/
static const char *cmdline_usage =
"fwd frontend usage:\n"
" fwd infile\n"
" -h Show usage (this)\n"
" infile Top file(s) to compile\n"
;
/** Print usage of compiler. */
static void usage()
{
fputs(cmdline_usage, stderr);
}
/**
* Main entry to compiler.
* Checks command line parameters and drives the rest of the compiler.
* Feels kind of weird documenting main, but doxygen warns about not
* doing it so whatever.
*
* @param argc Number of command line arguments.
* @param argv Array of command line arguments.
* @return \c 0 when succesful, non-zero otherwise.
*/
int main(int argc, char *argv[])
{
int opt;
while ((opt = getopt(argc, argv, "hI:")) != -1) {
switch (opt) {
case 'h':
usage();
exit(EXIT_SUCCESS);
default:
usage();
exit(EXIT_FAILURE);
}
}
if (optind >= argc) {
error("no input file");
usage();
exit(EXIT_FAILURE);
}
if (optind != argc - 1) {
error("too many arguments");
usage();
exit(EXIT_FAILURE);
}
const char *input = argv[optind];
return compile(input);
}
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