vendor tsgo

tools/tsgo/internal/core/stack.go

@@ -0,0 +1,33 @@
+package core
+
+type Stack[T any] struct {
+	data []T
+}
+
+func (s *Stack[T]) Push(item T) {
+	s.data = append(s.data, item)
+}
+
+func (s *Stack[T]) Pop() T {
+	l := len(s.data)
+	if l == 0 {
+		panic("stack is empty")
+	}
+	item := s.data[l-1]
+	var zero T
+	s.data[l-1] = zero
+	s.data = s.data[:l-1]
+	return item
+}
+
+func (s *Stack[T]) Peek() T {
+	l := len(s.data)
+	if l == 0 {
+		panic("stack is empty")
+	}
+	return s.data[l-1]
+}
+
+func (s *Stack[T]) Len() int {
+	return len(s.data)
+}