land/vendor/github.com/go-interpreter/wagon/internal/stack/stack.go

41 lines
739 B
Go

// Copyright 2017 The go-interpreter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package stack implements a growable uint64 stack
package stack
type Stack struct {
slice []uint64
}
func (s *Stack) Push(b uint64) {
s.slice = append(s.slice, b)
}
func (s *Stack) Pop() uint64 {
v := s.Top()
s.slice = s.slice[:len(s.slice)-1]
return v
}
func (s *Stack) SetTop(v uint64) {
s.slice[len(s.slice)-1] = v
}
func (s *Stack) Top() uint64 {
return s.slice[len(s.slice)-1]
}
func (s *Stack) Get(i int) uint64 {
return s.slice[i]
}
func (s *Stack) Set(i int, v uint64) {
s.slice[i] = v
}
func (s *Stack) Len() int {
return len(s.slice)
}