1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
import stack
type
StackStack* = object
height: int
head: ref Stack
func NewStackStack*(): ref StackStack =
new(result)
result.head = NewStack()
result.height = 1
func Pop*(ss: StackStack): int =
return ss.head[].Pop()
func Push*(ss: StackStack, v: int) =
ss.head[].Push(v)
func PopVector*(ss: StackStack): (int, int) =
return ss.head[].PopVector()
func PushVector*(ss: var StackStack, v: tuple[x, y: int]) =
ss.head[].PushVector(v)
func Clear*(ss: var StackStack) =
ss.head[].Clear()
func Duplicate*(ss: var StackStack) =
ss.head[].Duplicate()
func Swap*(ss: var StackStack) =
ss.head[].Swap()
func Begin*(ss: var StackStack, v: tuple[x, y: int]) =
inc ss.height
let soss = ss.head
let n = soss[].Pop()
ss.head = NewStack(size = abs(n), next = soss)
let toss = ss.head
if n > 0:
toss[].Transfert(soss[], n)
elif n < 0:
for i in 0 ..< -n:
soss[].Push(0)
soss[].PushVector(v)
func End*(ss: var StackStack, v: var tuple[x, y: int]): bool =
## Implements the '}' command behaviour which pops a stack from the stack stack
## returns true if a reflect should happen
if ss.height == 1:
return true
let toss = ss.head
let soss = toss[].Next()
let n = toss[].Pop()
(v.x, v.y) = soss[].PopVector()
if n > 0:
soss[].Transfert(toss[], n)
else:
soss[].Discard(-n)
dec ss.height
ss.head = soss
return false
func Under*(ss: var StackStack): bool =
if ss.height == 1:
return true
let soss = ss.head[].Next()
let n = ss.Pop()
if n > 0:
for i in 0..<n:
ss.Push(soss[].Pop())
else:
for i in 0 ..< -n:
soss[].Push(ss.Pop())
return false
func GetHeights*(ss: StackStack): (int, seq[int]) =
return (ss.height, ss.head[].GetHeights)
func YCommandPick*(ss: var StackStack, n, h: int) =
ss.head[].YCommandPick(n, h)
|
