vendor/github.com/hashicorp/hil/ast/stack.go

   1 package ast
   2
   3 // Stack is a stack of Node.
   4 type Stack struct {
   5         stack []Node
   6 }
   7
   8 func (s *Stack) Len() int {
   9         return len(s.stack)
  10 }
  11
  12 func (s *Stack) Push(n Node) {
  13         s.stack = append(s.stack, n)
  14 }
  15
  16 func (s *Stack) Pop() Node {
  17         x := s.stack[len(s.stack)-1]
  18         s.stack[len(s.stack)-1] = nil
  19         s.stack = s.stack[:len(s.stack)-1]
  20         return x
  21 }
  22
  23 func (s *Stack) Reset() {
  24         s.stack = nil
  25 }