Mono.Cecil.Fluent.MethodBodyExtensions.ComputeMaxStackSize C# (CSharp) Method

		public static int ComputeMaxStackSize(this MethodBody body)
		{
			var stackSize = 0;
			var maxStack = 0;
			var stackSizes = new Dictionary<Instruction, int>();

			if (body.HasExceptionHandlers)
			{
				foreach (var eh in body.ExceptionHandlers)
				{
					if (eh.HandlerType != ExceptionHandlerType.Catch && eh.HandlerType != ExceptionHandlerType.Filter)
						continue;
					
					if (eh.HandlerStart != null)
						stackSizes[eh.HandlerStart] = 1;
					if (eh.FilterStart != null && eh.HandlerType == ExceptionHandlerType.Filter)
						stackSizes[eh.FilterStart] = 1;
				}
			}
			
			foreach (var instruction in body.Instructions)
			{
				int computedSize;
				if (stackSizes != null && stackSizes.TryGetValue(instruction, out computedSize))
					stackSize = computedSize;
				maxStack = System.Math.Max(maxStack, stackSize);
				ComputeStackDelta(instruction, ref stackSize);
				maxStack = System.Math.Max(maxStack, stackSize);
				CopyBranchStackSize(instruction, ref stackSizes, stackSize);
				ComputeStackSize(instruction, ref stackSize);
			}

			return maxStack;
		}