1package terminfo
 2
 3type stack []interface{}
 4
 5func (s *stack) push(v interface{}) {
 6	*s = append(*s, v)
 7}
 8
 9func (s *stack) pop() interface{} {
10	if len(*s) == 0 {
11		return nil
12	}
13	v := (*s)[len(*s)-1]
14	*s = (*s)[:len(*s)-1]
15	return v
16}
17
18func (s *stack) popInt() int {
19	if i, ok := s.pop().(int); ok {
20		return i
21	}
22	return 0
23}
24
25func (s *stack) popBool() bool {
26	if b, ok := s.pop().(bool); ok {
27		return b
28	}
29	return false
30}
31
32func (s *stack) popByte() byte {
33	if b, ok := s.pop().(byte); ok {
34		return b
35	}
36	return 0
37}
38
39func (s *stack) popString() string {
40	if a, ok := s.pop().(string); ok {
41		return a
42	}
43	return ""
44}
45
46func (s *stack) reset() {
47	*s = (*s)[:0]
48}