/// <summary>Loads the argument at index i onto the evaluation stack.</summary>
        public static ILSugar LoadArgument(this ILSugar il, int i)
        {
            switch (i)
            {
            case 0:
                il.Ldarg_0();
                break;

            case 1:
                il.Ldarg_1();
                break;

            case 2:
                il.Ldarg_2();
                break;

            case 3:
                il.Ldarg_3();
                break;

            default:
                if (i <= byte.MaxValue)
                {
                    il.Ldarg_S((byte)i);
                }
                else
                {
                    il.Ldarg(i);
                }
                break;
            }

            return(il);
        }
        /// <summary>Loads the local variable at index i onto the evaluation stack.</summary>
        public static ILSugar LoadVariable(this ILSugar il, int i)
        {
            switch (i)
            {
            case 0:
                il.Ldloc_0();
                break;

            case 1:
                il.Ldloc_1();
                break;

            case 2:
                il.Ldloc_2();
                break;

            case 3:
                il.Ldloc_3();
                break;

            default:
                if (i <= byte.MaxValue)
                {
                    il.Ldloc_S((byte)i);
                }
                else
                {
                    il.Ldloc(i);
                }
                break;
            }

            return(il);
        }
        /// <summary> Branches to the specified label if a string on the evaluation stacks equals the given literal value.</summary>
        public static ILSugar GotoIfStringEquals(this ILSugar il, string literal, Label @goto)
        {
            var ifStringEquals = il.Ldstr(literal).Call(KnownMethods.StringEquals);

            ifStringEquals
            .Brtrue(@goto);     // TODO calculate offsets dynamically to call Brtrue_S vs. Brtrue, not worth it right now.
            return(il);
        }
 /// <summary>If the given type is a value type, converts it into an object reference (type O)</summary>
 public static ILSugar MaybeBox(this ILSugar il, Type type)
 {
     if (type.IsValueType)
     {
         il.Box(type);
     }
     return(il);
 }
        /// <summary>Pushes the value of i onto the evaluation stack as an int32.</summary>
        public static ILSugar LoadConstant(this ILSugar il, long i)
        {
            switch (i)
            {
            case 0:
                il.Ldc_I4_0();
                break;

            case 1:
                il.Ldc_I4_1();
                break;

            case 2:
                il.Ldc_I4_2();
                break;

            case 3:
                il.Ldc_I4_3();
                break;

            case 4:
                il.Ldc_I4_4();
                break;

            case 5:
                il.Ldc_I4_5();
                break;

            case 6:
                il.Ldc_I4_6();
                break;

            case 7:
                il.Ldc_I4_7();
                break;

            case 8:
                il.Ldc_I4_8();
                break;

            default:
                if (i <= byte.MaxValue)
                {
                    il.Ldc_I4_S((byte)i);
                }
                else if (i <= int.MaxValue)
                {
                    il.Ldc_I4((int)i);
                }
                else
                {
                    il.Ldc_I8(i);
                }
                break;
            }

            return(il);
        }
        public static ILSugar CallOrCallvirt(this ILSugar il, Type type, MethodInfo method)
        {
            if (method.IsVirtual && !type.IsValueType)
            {
                il.Callvirt(method);
            }
            else
            {
                il.Call(method);
            }

            return(il);
        }
        public static ILSugar CastOrUnboxAny(this ILSugar il, Type type)
        {
            if (type == typeof(object))
            {
                return(il);
            }

            if (type.IsValueType)
            {
                il.Unbox_Any(type);
            }
            else
            {
                il.Castclass(type);
            }

            return(il);
        }
Ejemplo n.º 8
0
        internal static void EmitCallMethod(this ILSugar il, MethodInfo method)
        {
            var type = method.DeclaringType ?? throw new NullReferenceException();

            if (!method.IsStatic)
            {
                il.Ldarg_1(); // target
                il.Unbox_Any(type);

                var @this = il.DeclareLocal(type);
                il.Stloc(@this);
                if (type.IsValueType)
                {
                    il.Ldloca(@this);
                }
                else
                {
                    il.Ldloc(@this);
                }
            }

            var parameters = method.GetParameters();

            if (parameters.Length > 0)
            {
                for (var i = 0; i < parameters.Length; i++)
                {
                    il.Ldarg_2();       // args
                    il.LoadConstant(i); // i
                    il.Ldelem_Ref();    // args[i]

                    var parameterType = parameters[i].ParameterType;
                    var byRef         = parameterType.IsByRef;
                    if (byRef)
                    {
                        parameterType = parameterType.GetElementType();
                    }

                    il.Unbox_Any(parameterType);
                    var arg = il.DeclareLocal(parameterType);
                    il.Stloc(arg);
                    if (byRef)
                    {
                        il.Ldloca(arg);
                    }
                    else
                    {
                        il.Ldloc(arg);
                    }
                }
            }

            il.CallOrCallvirt(type, method);

            for (var i = 0; i < parameters.Length; i++)
            {
                var parameterType = parameters[i].ParameterType;
                if (!parameterType.IsByRef)
                {
                    continue;
                }

                il.Ldarg_2();
                il.Ldc_I4(i);
                il.Ldloc(i + (method.IsStatic ? 0 : 1));

                parameterType = parameterType.GetElementType() ?? parameterType;
                if (parameterType.IsValueType)
                {
                    il.Box(parameterType);
                }
                il.Stelem_Ref();
            }

            if (method.ReturnType == typeof(void))
            {
                il.Ldnull();
            }
            else
            {
                il.MaybeBox(method.ReturnType);
            }

            il.Ret();
        }