1 files changed, 46 insertions, 0 deletions
diff --git a/go/game/stack.go b/go/game/stack.go
new file mode 100644
index 00000000..9132ae13
--- /dev/null
+++ b/go/game/stack.go
@@ -0,0 +1,46 @@
+package game
+
+import (
+	"log"
+)
+
+type Stack struct {
+	gameState *State
+	Actions   []Action
+}
+
+func NewStack(s *State) *Stack {
+	return &Stack{s, []Action{}}
+}
+
+func (s *Stack) IsEmpty() bool {
+	return len(s.Actions) == 0
+}
+
+func (s *Stack) Push(a Action) {
+	s.Actions = append(s.Actions, a)
+}
+
+func (s *Stack) Pop() {
+	l := len(s.Actions)
+	if l == 0 {
+		log.Fatalf("Can not pop from empty stack")
+	}
+
+	a := s.Actions[l-1]
+	s.Actions = s.Actions[:l-1]
+
+	err := s.gameState.ValidateAction(a)
+	if err == nil {
+		a.Resolve(s.gameState)
+	}
+	log.Println("Resolved", a, err)
+	s.gameState.broadcastNotification(NewResolvedActionNotification(a, err))
+}
+
+func (s *Stack) Resolve() {
+	for !s.IsEmpty() {
+		s.gameState.AllPassing(false)
+		s.Pop()
+	}
+}