module builtin

// called by the generated main/init
fn init() {
}

pub fn isnil(p voidptr) bool {
    return p == 0
}

pub fn print(s string) {
    sys_write(1, s.str, u64(s.len))
}

pub fn println(s string) {
    print(s)
    print('\n')
}

pub fn panic(s string) {
    eprint('V panic: ')
    eprintln(s)
    sys_exit(1)
}

// replaces panic when -debug arg is passed
fn panic_debug(line_no int, file string, mod string, fn_name string, s string) {
    eprintln('================ V panic ================')
    eprint('   module: ')
    eprintln('mod')
    eprint(' function: ')
    eprint(fn_name)
    eprintln('()')
    eprintln('     file: ')
    eprintln(file)
    // println('     line: ${line_no}')
    eprint('  message: ')
    eprintln(s)
    eprintln('=========================================')
    sys_exit(1)
}

pub fn eprint(s string) {
    if isnil(s.str) {
        panic('eprint(NIL)')
    }
    sys_write(2, s.str, u64(s.len))
}

pub fn eprint_ln(s string) {
    eprint(s)
    eprint('\n')
}

pub fn eprintln(s string) {
    if isnil(s.str) {
        panic('eprintln(NIL)')
    }
    eprint_ln(s)
}