// selfhost/cmd/wcc/err.ww — port of cmd/wcc/err.c.
//
// Diagnostics. Plan 9 style: short, no levels beyond fatal/error/warn.
// Output goes through os.write so we don't pull in libc stdio.

use os;
use fmt;

type pos = struct {
	file: str,
	line: i32,
	col:  i32,
};

let nerrors:   i32 = 0;
let nwarnings: i32 = 0;

export fn fatal(msg: str) void = {
	fmt.errln(msg);
	os.exit(1);
};

export fn errorf(p: pos, msg: str) void = {
	os.write(2, p.file.ptr, p.file.len: u64);
	os.write(2, ": error: ".ptr, 9u64);
	os.write(2, msg.ptr, msg.len: u64);
	os.write(2, "\n".ptr, 1u64);
	nerrors += 1;
};

export fn warnf(p: pos, msg: str) void = {
	os.write(2, p.file.ptr, p.file.len: u64);
	os.write(2, ": warning: ".ptr, 11u64);
	os.write(2, msg.ptr, msg.len: u64);
	os.write(2, "\n".ptr, 1u64);
	nwarnings += 1;
};