protected virtual ClassHierarchyNode FindLowestCommonAncestor(ICollection <ClassHierarchyNode> typeNodes) { V_0 = 0; V_1 = null; V_4 = typeNodes.GetEnumerator(); try { while (V_4.MoveNext()) { V_0 = V_0 + 1; V_1 = V_4.get_Current(); } } finally { if (V_4 != null) { V_4.Dispose(); } } if (V_0 == 1) { return(V_1); } V_2 = new Queue <ClassHierarchyNode>(); V_3 = new HashSet <ClassHierarchyNode>(); V_4 = typeNodes.GetEnumerator(); try { while (V_4.MoveNext()) { V_5 = V_4.get_Current(); if (V_2.get_Count() != 0) { V_10 = V_5; while (!V_3.Contains(V_10)) { stackVariable28 = V_5.get_CanAssignTo(); stackVariable29 = TypeInferer.u003cu003ec.u003cu003e9__18_0; if (stackVariable29 == null) { dummyVar1 = stackVariable29; stackVariable29 = new Func <ClassHierarchyNode, bool>(TypeInferer.u003cu003ec.u003cu003e9.u003cFindLowestCommonAncestoru003eb__18_0); TypeInferer.u003cu003ec.u003cu003e9__18_0 = stackVariable29; } if (stackVariable28.Count <ClassHierarchyNode>(stackVariable29) <= 1) { stackVariable33 = V_10.get_CanAssignTo(); stackVariable34 = TypeInferer.u003cu003ec.u003cu003e9__18_1; if (stackVariable34 == null) { dummyVar2 = stackVariable34; stackVariable34 = new Func <ClassHierarchyNode, bool>(TypeInferer.u003cu003ec.u003cu003e9.u003cFindLowestCommonAncestoru003eb__18_1); TypeInferer.u003cu003ec.u003cu003e9__18_1 = stackVariable34; } V_10 = stackVariable33.FirstOrDefault <ClassHierarchyNode>(stackVariable34); } else { V_11 = null; goto Label1; } } while (V_2.Peek() != V_10) { dummyVar3 = V_3.Remove(V_2.Dequeue()); } } else { V_6 = V_5; while (V_6 != null) { V_2.Enqueue(V_6); dummyVar0 = V_3.Add(V_6); V_7 = null; V_8 = V_6.get_CanAssignTo().GetEnumerator(); try { while (V_8.MoveNext()) { V_9 = V_8.get_Current(); if (!V_9.get_IsHardNode()) { continue; } V_7 = V_9; goto Label2; } } finally { if (V_8 != null) { V_8.Dispose(); } } Label2: V_6 = V_7; } } } goto Label0; } finally { if (V_4 != null) { V_4.Dispose(); } } Label1: return(V_11); Label0: return(V_2.Peek()); }