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