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28 lines
619 B
Go
28 lines
619 B
Go
package interpreter
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import "log"
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type Stack struct {
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values []int
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}
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// Pushes the given value to the stack
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func (s *Stack) Push(val int) {
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s.values = append(s.values, val)
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}
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// Pops the top element from the stack and return its value
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func (s *Stack) Pop() int {
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// Check if the stack contains at least one element
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if len(s.values) > 0 {
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// There's at least one element, pop it: get value and delete element
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val := s.values[len(s.values)-1]
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s.values = s.values[:len(s.values)-1]
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return val
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}
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// Stack is empty, but we should pop... Damn.
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log.Panic("Tried to pop value from empty stack.")
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return 0
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}
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