add stack utility

Author: paulwe

observability/agentsobs/gen_reporter.go

@@ -0,0 +1,25 @@
+package stack
+
+type Stack[T any] []T
+
+func (s Stack[T]) Empty() bool {
+	return len(s) == 0
+}
+
+func (s *Stack[T]) Reset() {
+	*s = (*s)[:0]
+}
+
+func (s *Stack[T]) Push(v T) {
+	*s = append(*s, v)
+}
+
+func (s *Stack[T]) Pop() T {
+	v := (*s)[len(*s)-1]
+	*s = (*s)[:len(*s)-1]
+	return v
+}
+
+func (s Stack[T]) Peek() T {
+	return s[len(s)-1]
+}