diff options
Diffstat (limited to 'vendor/github.com/hashicorp/hil/ast/stack.go')
-rw-r--r-- | vendor/github.com/hashicorp/hil/ast/stack.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/hil/ast/stack.go b/vendor/github.com/hashicorp/hil/ast/stack.go new file mode 100644 index 00000000..bd2bc157 --- /dev/null +++ b/vendor/github.com/hashicorp/hil/ast/stack.go @@ -0,0 +1,25 @@ +package ast + +// Stack is a stack of Node. +type Stack struct { + stack []Node +} + +func (s *Stack) Len() int { + return len(s.stack) +} + +func (s *Stack) Push(n Node) { + s.stack = append(s.stack, n) +} + +func (s *Stack) Pop() Node { + x := s.stack[len(s.stack)-1] + s.stack[len(s.stack)-1] = nil + s.stack = s.stack[:len(s.stack)-1] + return x +} + +func (s *Stack) Reset() { + s.stack = nil +} |