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package stack
import (
"git.adyxax.org/adyxax/gofunge/pkg/pointer"
)
type StackStack struct {
head *Stack
height int
}
func NewStackStack() *StackStack {
return &StackStack{
head: NewStack(),
height: 1,
}
}
func (ss *StackStack) Begin(p *pointer.Pointer) {
soss := ss.head
n := soss.Pop()
np := n
if np < 0 {
np = -np
}
toss := &Stack{
size: np,
height: np,
data: make([]int, np),
next: soss,
}
ss.head = toss
max := n - soss.height
if max < 0 {
max = 0
}
for i := n - 1; i >= max; i-- {
toss.data[i] = soss.data[soss.height-n+i]
}
x, y := p.GetStorageOffset()
soss.Push(x)
soss.Push(y)
p.CalculateNewStorageOffset()
}
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