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
}

fn dump_of_struct() {
	p := Point{1, 2, 3}
	mut p_mut := Point{1, 2, 3}
	p_ptr := &Point{1, 2, 3}

	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()
}
