import os

fn dump_of_int() {
    x := dump(1) + 1
    assert x == 2
}

fn dump_of_string() {
    x := dump('a') + 'b'
    assert x == 'ab'
}

struct Point {
mut:
    x int
    y int
    z int
}

struct Aa {
    cmd &os.Command
}

fn dump_of_struct() {
    p := Point{1, 2, 3}
    mut p_mut := Point{1, 2, 3}
    p_ptr := &Point{1, 2, 3}
    c := &os.Command{}
    a := Aa{
        cmd: c
    }

    dump(a)
    mut x1 := dump(p)
    mut x2 := dump(p_mut)
    mut x3 := dump(p_ptr)
    x1.x += 100
    x2.x += 100
    x3.x += 100
    assert x1 == Point{101, 2, 3}
    assert x2 == Point{101, 2, 3}
    assert x3 == Point{101, 2, 3}
}

fn dump_of_callexpr() {
    vfile := @FILE
    dump(os.file_name(vfile))
    mut f := os.open_file(@FILE, 'r') or { return }
    mut buf := []u8{len: 10}
    dump(f.read(mut buf) or { -999 })
    f.close()
}

fn main() {
    dump_of_int()
    dump_of_string()
    dump_of_struct()
    dump_of_callexpr()
}