51 lines
986 B
Go
51 lines
986 B
Go
package views
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import "github.com/rs/zerolog/log"
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const maxStackSize = 10
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type cmdStack struct {
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index int
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stack []string
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}
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func newCmdStack() *cmdStack {
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return &cmdStack{stack: make([]string, 0, maxStackSize)}
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}
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func (s *cmdStack) push(cmd string) {
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if len(s.stack) == maxStackSize {
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s.stack = s.stack[1 : len(s.stack)-1]
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}
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s.stack = append(s.stack, cmd)
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log.Info().Msgf("Pushed %s %v", cmd, s.stack)
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}
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func (s *cmdStack) pop() (string, bool) {
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if s.empty() {
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return "", false
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}
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log.Info().Msgf("Before Pop %v", s.stack)
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top := s.stack[len(s.stack)-1]
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s.stack = s.stack[:len(s.stack)-1]
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log.Info().Msgf("After Pop %v", s.stack)
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return top, true
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}
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func (s *cmdStack) top() (string, bool) {
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if s.empty() {
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return "", false
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}
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log.Info().Msgf("Top %v -- %s", s.stack, s.stack[len(s.stack)-1])
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return s.stack[len(s.stack)-1], true
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}
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func (s *cmdStack) empty() bool {
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return len(s.stack) == 0
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}
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func (s *cmdStack) last() bool {
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return len(s.stack) == 1
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}
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