using System;
using System.Text;
using System.Reflection;
using System.Runtime.InteropServices;

namespace Mono.VisualC.Interop.ABI {

	public class Itanium : CppAbi {

		public Itanium() {}

		public override CallingConvention DefaultCallingConvention {
			get {
				return CallingConvention.Cdecl;
			}
		}

		public override string GetMangledMethodName(MethodInfo methodInfo) {
			string methodName = methodInfo.Name;
                        MethodType methodType = GetMethodType(methodInfo);
			ParameterInfo[] parameters = methodInfo.GetParameters();

			StringBuilder nm = new StringBuilder("_ZN", 30);
			nm.Append(className.Length).Append(className);

			switch (methodType) {

				case MethodType.NativeCtor:
					nm.Append("C1");
					break;

				case MethodType.NativeDtor:
					nm.Append("D1");
					break;

				default:
					nm.Append(methodName.Length).Append(methodName);
					break;

			}

			nm.Append("E");

			if (parameters.Length == 1) { //only the C++ "this" object
				nm.Append("v");
			} else for (int i = 1; i < parameters.Length; i++) {
				nm.Append(GetTypeCode(parameters[i].ParameterType));
			}

			return nm.ToString();
		}

		protected virtual string GetTypeCode(Type t) {
			if (t.Equals(typeof(int))) return "i";
			throw new NotSupportedException("Unsupported parameter type: " + t.ToString());
		}

	}
}