Beispiel #1
0
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            CodeTypeReferenceExpression expression2 = (CodeTypeReferenceExpression)expression;

            if (expression2.Type == null)
            {
                ValidationError item = new ValidationError(Messages.NullTypeType, 0x53d);
                item.UserData["ErrorObject"] = expression2;
                validation.Errors.Add(item);
                return(null);
            }
            if (isWritten)
            {
                ValidationError error2 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeTypeReferenceExpression).ToString() }), 0x17a);
                error2.UserData["ErrorObject"] = expression2;
                validation.Errors.Add(error2);
                return(null);
            }
            return(new RuleExpressionInfo(validation.ResolveType(expression2.Type)));
        }
Beispiel #2
0
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            CodeCastExpression expression2 = (CodeCastExpression)expression;

            if (isWritten)
            {
                ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeCastExpression).ToString() }), 0x17a);
                item.UserData["ErrorObject"] = expression2;
                validation.Errors.Add(item);
                return(null);
            }
            if (expression2.Expression == null)
            {
                ValidationError error2 = new ValidationError(Messages.NullCastExpr, 0x53d);
                error2.UserData["ErrorObject"] = expression2;
                validation.Errors.Add(error2);
                return(null);
            }
            if (expression2.Expression is CodeTypeReferenceExpression)
            {
                ValidationError error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression2.Expression.GetType().FullName }), 0x548);
                error.UserData["ErrorObject"] = expression2.Expression;
                validation.AddError(error);
                return(null);
            }
            if (expression2.TargetType == null)
            {
                ValidationError error4 = new ValidationError(Messages.NullCastType, 0x53d);
                error4.UserData["ErrorObject"] = expression2;
                validation.Errors.Add(error4);
                return(null);
            }
            RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, expression2.Expression, false);

            if (info == null)
            {
                return(null);
            }
            Type expressionType = info.ExpressionType;
            Type type           = validation.ResolveType(expression2.TargetType);

            if (type == null)
            {
                return(null);
            }
            if (expressionType == typeof(NullLiteral))
            {
                if (ConditionHelper.IsNonNullableValueType(type))
                {
                    ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CastOfNullInvalid, new object[] { RuleDecompiler.DecompileType(type) }), 0x53d);
                    error5.UserData["ErrorObject"] = expression2;
                    validation.Errors.Add(error5);
                    return(null);
                }
            }
            else
            {
                Type type3 = expressionType;
                if (ConditionHelper.IsNullableValueType(type3))
                {
                    type3 = type3.GetGenericArguments()[0];
                }
                Type type4 = type;
                if (ConditionHelper.IsNullableValueType(type4))
                {
                    type4 = type4.GetGenericArguments()[0];
                }
                bool flag = false;
                if (type3.IsValueType && type4.IsValueType)
                {
                    if (type3.IsEnum)
                    {
                        flag = type4.IsEnum || IsNumeric(type4);
                    }
                    else if (type4.IsEnum)
                    {
                        flag = IsNumeric(type3);
                    }
                    else if (type3 == typeof(char))
                    {
                        flag = IsNumeric(type4);
                    }
                    else if (type4 == typeof(char))
                    {
                        flag = IsNumeric(type3);
                    }
                    else if (type3.IsPrimitive && type4.IsPrimitive)
                    {
                        try
                        {
                            Convert.ChangeType(Activator.CreateInstance(type3), type4, CultureInfo.CurrentCulture);
                            flag = true;
                        }
                        catch (Exception)
                        {
                            flag = false;
                        }
                    }
                }
                if (!flag)
                {
                    ValidationError error6;
                    flag = RuleValidation.ExplicitConversionSpecified(expressionType, type, out error6);
                    if (error6 != null)
                    {
                        error6.UserData["ErrorObject"] = expression2;
                        validation.Errors.Add(error6);
                        return(null);
                    }
                }
                if (!flag)
                {
                    ValidationError error7 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CastIncompatibleTypes, new object[] { RuleDecompiler.DecompileType(expressionType), RuleDecompiler.DecompileType(type) }), 0x53d);
                    error7.UserData["ErrorObject"] = expression2;
                    validation.Errors.Add(error7);
                    return(null);
                }
            }
            return(new RuleExpressionInfo(type));
        }
 internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
 {
     CodeCastExpression expression2 = (CodeCastExpression) expression;
     if (isWritten)
     {
         ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeCastExpression).ToString() }), 0x17a);
         item.UserData["ErrorObject"] = expression2;
         validation.Errors.Add(item);
         return null;
     }
     if (expression2.Expression == null)
     {
         ValidationError error2 = new ValidationError(Messages.NullCastExpr, 0x53d);
         error2.UserData["ErrorObject"] = expression2;
         validation.Errors.Add(error2);
         return null;
     }
     if (expression2.Expression is CodeTypeReferenceExpression)
     {
         ValidationError error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression2.Expression.GetType().FullName }), 0x548);
         error.UserData["ErrorObject"] = expression2.Expression;
         validation.AddError(error);
         return null;
     }
     if (expression2.TargetType == null)
     {
         ValidationError error4 = new ValidationError(Messages.NullCastType, 0x53d);
         error4.UserData["ErrorObject"] = expression2;
         validation.Errors.Add(error4);
         return null;
     }
     RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, expression2.Expression, false);
     if (info == null)
     {
         return null;
     }
     Type expressionType = info.ExpressionType;
     Type type = validation.ResolveType(expression2.TargetType);
     if (type == null)
     {
         return null;
     }
     if (expressionType == typeof(NullLiteral))
     {
         if (ConditionHelper.IsNonNullableValueType(type))
         {
             ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CastOfNullInvalid, new object[] { RuleDecompiler.DecompileType(type) }), 0x53d);
             error5.UserData["ErrorObject"] = expression2;
             validation.Errors.Add(error5);
             return null;
         }
     }
     else
     {
         Type type3 = expressionType;
         if (ConditionHelper.IsNullableValueType(type3))
         {
             type3 = type3.GetGenericArguments()[0];
         }
         Type type4 = type;
         if (ConditionHelper.IsNullableValueType(type4))
         {
             type4 = type4.GetGenericArguments()[0];
         }
         bool flag = false;
         if (type3.IsValueType && type4.IsValueType)
         {
             if (type3.IsEnum)
             {
                 flag = type4.IsEnum || IsNumeric(type4);
             }
             else if (type4.IsEnum)
             {
                 flag = IsNumeric(type3);
             }
             else if (type3 == typeof(char))
             {
                 flag = IsNumeric(type4);
             }
             else if (type4 == typeof(char))
             {
                 flag = IsNumeric(type3);
             }
             else if (type3.IsPrimitive && type4.IsPrimitive)
             {
                 try
                 {
                     Convert.ChangeType(Activator.CreateInstance(type3), type4, CultureInfo.CurrentCulture);
                     flag = true;
                 }
                 catch (Exception)
                 {
                     flag = false;
                 }
             }
         }
         if (!flag)
         {
             ValidationError error6;
             flag = RuleValidation.ExplicitConversionSpecified(expressionType, type, out error6);
             if (error6 != null)
             {
                 error6.UserData["ErrorObject"] = expression2;
                 validation.Errors.Add(error6);
                 return null;
             }
         }
         if (!flag)
         {
             ValidationError error7 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CastIncompatibleTypes, new object[] { RuleDecompiler.DecompileType(expressionType), RuleDecompiler.DecompileType(type) }), 0x53d);
             error7.UserData["ErrorObject"] = expression2;
             validation.Errors.Add(error7);
             return null;
         }
     }
     return new RuleExpressionInfo(type);
 }
 internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
 {
     CodeTypeReferenceExpression expression2 = (CodeTypeReferenceExpression) expression;
     if (expression2.Type == null)
     {
         ValidationError item = new ValidationError(Messages.NullTypeType, 0x53d);
         item.UserData["ErrorObject"] = expression2;
         validation.Errors.Add(item);
         return null;
     }
     if (isWritten)
     {
         ValidationError error2 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeTypeReferenceExpression).ToString() }), 0x17a);
         error2.UserData["ErrorObject"] = expression2;
         validation.Errors.Add(error2);
         return null;
     }
     return new RuleExpressionInfo(validation.ResolveType(expression2.Type));
 }
Beispiel #5
0
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            CodeArrayCreateExpression newParent = (CodeArrayCreateExpression)expression;

            if (isWritten)
            {
                ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeObjectCreateExpression).ToString() }), 0x17a);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if (newParent.CreateType == null)
            {
                ValidationError error2 = new ValidationError(Messages.NullTypeType, 0x53d);
                error2.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error2);
                return(null);
            }
            Type lhsType = validation.ResolveType(newParent.CreateType);

            if (lhsType == null)
            {
                return(null);
            }
            if (lhsType.IsArray)
            {
                ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayTypeInvalid, new object[] { lhsType.Name }), 0x53d);
                error3.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error3);
                return(null);
            }
            try
            {
                if (!validation.PushParentExpression(newParent))
                {
                    return(null);
                }
                if (newParent.Size < 0)
                {
                    ValidationError error4 = new ValidationError(Messages.ArraySizeInvalid, 0x53d);
                    error4.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(error4);
                    return(null);
                }
                if (newParent.SizeExpression != null)
                {
                    RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.SizeExpression, false);
                    if (info == null)
                    {
                        return(null);
                    }
                    if (((info.ExpressionType != typeof(int)) && (info.ExpressionType != typeof(uint))) && ((info.ExpressionType != typeof(long)) && (info.ExpressionType != typeof(ulong))))
                    {
                        ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArraySizeTypeInvalid, new object[] { info.ExpressionType.Name }), 0x53d);
                        error5.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(error5);
                        return(null);
                    }
                }
                bool flag = false;
                for (int i = 0; i < newParent.Initializers.Count; i++)
                {
                    CodeExpression expression3 = newParent.Initializers[i];
                    if (expression3 == null)
                    {
                        ValidationError error6 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.MissingInitializer, new object[] { lhsType.Name }), 0x53d);
                        error6.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(error6);
                        return(null);
                    }
                    RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, expression3, false);
                    if (info2 == null)
                    {
                        flag = true;
                    }
                    else
                    {
                        ValidationError error7;
                        if (!RuleValidation.StandardImplicitConversion(info2.ExpressionType, lhsType, expression3, out error7))
                        {
                            if (error7 != null)
                            {
                                error7.UserData["ErrorObject"] = newParent;
                                validation.Errors.Add(error7);
                            }
                            error7 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.InitializerMismatch, new object[] { i, lhsType.Name }), 0x545);
                            error7.UserData["ErrorObject"] = newParent;
                            validation.Errors.Add(error7);
                            return(null);
                        }
                    }
                }
                if (flag)
                {
                    return(null);
                }
                double size = -1.0;
                if (newParent.SizeExpression != null)
                {
                    CodePrimitiveExpression sizeExpression = newParent.SizeExpression as CodePrimitiveExpression;
                    if ((sizeExpression != null) && (sizeExpression.Value != null))
                    {
                        size = (double)Executor.AdjustType(sizeExpression.Value.GetType(), sizeExpression.Value, typeof(double));
                    }
                    if (newParent.Size > 0)
                    {
                        ValidationError error8 = new ValidationError(Messages.ArraySizeBoth, 0x53d);
                        error8.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(error8);
                        return(null);
                    }
                }
                else if (newParent.Size > 0)
                {
                    size = newParent.Size;
                }
                if ((size >= 0.0) && (newParent.Initializers.Count > size))
                {
                    ValidationError error9 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.InitializerCountMismatch, new object[] { newParent.Initializers.Count, size }), 0x545);
                    error9.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(error9);
                    return(null);
                }
            }
            finally
            {
                validation.PopParentExpression();
            }
            return(new RuleExpressionInfo(lhsType.MakeArrayType()));
        }
 internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
 {
     CodeArrayCreateExpression newParent = (CodeArrayCreateExpression) expression;
     if (isWritten)
     {
         ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeObjectCreateExpression).ToString() }), 0x17a);
         item.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(item);
         return null;
     }
     if (newParent.CreateType == null)
     {
         ValidationError error2 = new ValidationError(Messages.NullTypeType, 0x53d);
         error2.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(error2);
         return null;
     }
     Type lhsType = validation.ResolveType(newParent.CreateType);
     if (lhsType == null)
     {
         return null;
     }
     if (lhsType.IsArray)
     {
         ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayTypeInvalid, new object[] { lhsType.Name }), 0x53d);
         error3.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(error3);
         return null;
     }
     try
     {
         if (!validation.PushParentExpression(newParent))
         {
             return null;
         }
         if (newParent.Size < 0)
         {
             ValidationError error4 = new ValidationError(Messages.ArraySizeInvalid, 0x53d);
             error4.UserData["ErrorObject"] = newParent;
             validation.Errors.Add(error4);
             return null;
         }
         if (newParent.SizeExpression != null)
         {
             RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.SizeExpression, false);
             if (info == null)
             {
                 return null;
             }
             if (((info.ExpressionType != typeof(int)) && (info.ExpressionType != typeof(uint))) && ((info.ExpressionType != typeof(long)) && (info.ExpressionType != typeof(ulong))))
             {
                 ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArraySizeTypeInvalid, new object[] { info.ExpressionType.Name }), 0x53d);
                 error5.UserData["ErrorObject"] = newParent;
                 validation.Errors.Add(error5);
                 return null;
             }
         }
         bool flag = false;
         for (int i = 0; i < newParent.Initializers.Count; i++)
         {
             CodeExpression expression3 = newParent.Initializers[i];
             if (expression3 == null)
             {
                 ValidationError error6 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.MissingInitializer, new object[] { lhsType.Name }), 0x53d);
                 error6.UserData["ErrorObject"] = newParent;
                 validation.Errors.Add(error6);
                 return null;
             }
             RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, expression3, false);
             if (info2 == null)
             {
                 flag = true;
             }
             else
             {
                 ValidationError error7;
                 if (!RuleValidation.StandardImplicitConversion(info2.ExpressionType, lhsType, expression3, out error7))
                 {
                     if (error7 != null)
                     {
                         error7.UserData["ErrorObject"] = newParent;
                         validation.Errors.Add(error7);
                     }
                     error7 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.InitializerMismatch, new object[] { i, lhsType.Name }), 0x545);
                     error7.UserData["ErrorObject"] = newParent;
                     validation.Errors.Add(error7);
                     return null;
                 }
             }
         }
         if (flag)
         {
             return null;
         }
         double size = -1.0;
         if (newParent.SizeExpression != null)
         {
             CodePrimitiveExpression sizeExpression = newParent.SizeExpression as CodePrimitiveExpression;
             if ((sizeExpression != null) && (sizeExpression.Value != null))
             {
                 size = (double) Executor.AdjustType(sizeExpression.Value.GetType(), sizeExpression.Value, typeof(double));
             }
             if (newParent.Size > 0)
             {
                 ValidationError error8 = new ValidationError(Messages.ArraySizeBoth, 0x53d);
                 error8.UserData["ErrorObject"] = newParent;
                 validation.Errors.Add(error8);
                 return null;
             }
         }
         else if (newParent.Size > 0)
         {
             size = newParent.Size;
         }
         if ((size >= 0.0) && (newParent.Initializers.Count > size))
         {
             ValidationError error9 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.InitializerCountMismatch, new object[] { newParent.Initializers.Count, size }), 0x545);
             error9.UserData["ErrorObject"] = newParent;
             validation.Errors.Add(error9);
             return null;
         }
     }
     finally
     {
         validation.PopParentExpression();
     }
     return new RuleExpressionInfo(lhsType.MakeArrayType());
 }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            ValidationError            error;
            CodeObjectCreateExpression newParent = (CodeObjectCreateExpression)expression;

            if (isWritten)
            {
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeObjectCreateExpression).ToString() }), 0x17a);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
                return(null);
            }
            if (newParent.CreateType == null)
            {
                error = new ValidationError(Messages.NullTypeType, 0x53d);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
                return(null);
            }
            Type type = validation.ResolveType(newParent.CreateType);

            if (type == null)
            {
                return(null);
            }
            List <CodeExpression> argumentExprs = new List <CodeExpression>();

            try
            {
                if (!validation.PushParentExpression(newParent))
                {
                    return(null);
                }
                bool flag = false;
                for (int i = 0; i < newParent.Parameters.Count; i++)
                {
                    CodeExpression expression3 = newParent.Parameters[i];
                    if (expression3 == null)
                    {
                        error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullConstructorParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), RuleDecompiler.DecompileType(type) }), 0x53d);
                        error.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(error);
                        flag = true;
                    }
                    else
                    {
                        if (RuleExpressionWalker.Validate(validation, expression3, false) == null)
                        {
                            flag = true;
                        }
                        argumentExprs.Add(expression3);
                    }
                }
                if (flag)
                {
                    return(null);
                }
            }
            finally
            {
                validation.PopParentExpression();
            }
            BindingFlags constructorBindingFlags = BindingFlags.Public | BindingFlags.Instance;

            if (validation.AllowInternalMembers(type))
            {
                constructorBindingFlags |= BindingFlags.NonPublic;
            }
            if (type.IsValueType && (argumentExprs.Count == 0))
            {
                return(new RuleExpressionInfo(type));
            }
            if (type.IsAbstract)
            {
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, new object[] { RuleDecompiler.DecompileType(type) }), 0x137);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
                return(null);
            }
            RuleConstructorExpressionInfo info2 = validation.ResolveConstructor(type, constructorBindingFlags, argumentExprs, out error);

            if (info2 == null)
            {
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, new object[] { RuleDecompiler.DecompileType(type) }), 0x137);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
                return(null);
            }
            return(info2);
        }
Beispiel #8
0
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            Type expressionType = null;
            RuleMethodInvokeExpressionInfo info  = null;
            ValidationError            item      = null;
            BindingFlags               @public   = BindingFlags.Public;
            CodeMethodInvokeExpression newParent = (CodeMethodInvokeExpression)expression;

            if (isWritten)
            {
                item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeMethodInvokeExpression).ToString() }), 0x17a);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if ((newParent.Method == null) || (newParent.Method.TargetObject == null))
            {
                item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if ((newParent.Method.TypeArguments != null) && (newParent.Method.TypeArguments.Count > 0))
            {
                item = new ValidationError(Messages.GenericMethodsNotSupported, 0x548);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            try
            {
                if (!validation.PushParentExpression(newParent))
                {
                    return(null);
                }
                RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, newParent.Method.TargetObject, false);
                if (info2 == null)
                {
                    return(null);
                }
                expressionType = info2.ExpressionType;
                if (expressionType == null)
                {
                    return(null);
                }
                if (expressionType == typeof(NullLiteral))
                {
                    item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x546);
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    expressionType = null;
                }
                List <CodeExpression> argumentExprs = new List <CodeExpression>();
                bool flag = false;
                if (newParent.Parameters != null)
                {
                    for (int i = 0; i < newParent.Parameters.Count; i++)
                    {
                        CodeExpression expression3 = newParent.Parameters[i];
                        if (expression3 == null)
                        {
                            item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), newParent.Method.MethodName }), 0x53d);
                            item.UserData["ErrorObject"] = newParent;
                            validation.Errors.Add(item);
                            expressionType = null;
                        }
                        else
                        {
                            if (expression3 is CodeTypeReferenceExpression)
                            {
                                item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression3.GetType().FullName }), 0x548);
                                item.UserData["ErrorObject"] = expression3;
                                validation.AddError(item);
                                flag = true;
                            }
                            if (RuleExpressionWalker.Validate(validation, expression3, false) == null)
                            {
                                flag = true;
                            }
                            argumentExprs.Add(expression3);
                        }
                    }
                }
                if (expressionType == null)
                {
                    return(null);
                }
                if (flag)
                {
                    return(null);
                }
                if (newParent.Method.TargetObject is CodeTypeReferenceExpression)
                {
                    @public |= BindingFlags.FlattenHierarchy | BindingFlags.Static;
                }
                else
                {
                    @public |= BindingFlags.Instance;
                }
                if (validation.AllowInternalMembers(expressionType))
                {
                    @public |= BindingFlags.NonPublic;
                }
                info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item);
                if ((info == null) && newParent.UserData.Contains("QualifiedName"))
                {
                    string qualifiedName = newParent.UserData["QualifiedName"] as string;
                    Type   type2         = validation.ResolveType(qualifiedName);
                    if (type2 != null)
                    {
                        validation.DetermineExtensionMethods(type2.Assembly);
                        info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item);
                    }
                }
                if (info == null)
                {
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    return(null);
                }
            }
            finally
            {
                validation.PopParentExpression();
            }
            MethodInfo methodInfo = info.MethodInfo;

            if (methodInfo.ReturnType == null)
            {
                item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.Method.MethodName }), 0x194);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if (!validation.ValidateMemberAccess(newParent.Method.TargetObject, expressionType, methodInfo, newParent.Method.MethodName, newParent))
            {
                return(null);
            }
            object[] customAttributes = methodInfo.GetCustomAttributes(typeof(RuleAttribute), true);
            if ((customAttributes != null) && (customAttributes.Length > 0))
            {
                Stack <MemberInfo> stack = new Stack <MemberInfo>();
                stack.Push(methodInfo);
                bool flag2 = true;
                foreach (RuleAttribute attribute in customAttributes)
                {
                    if (!attribute.Validate(validation, methodInfo, expressionType, methodInfo.GetParameters()))
                    {
                        flag2 = false;
                    }
                }
                stack.Pop();
                if (!flag2)
                {
                    return(null);
                }
            }
            if (methodInfo is ExtensionMethodInfo)
            {
                newParent.UserData["QualifiedName"] = methodInfo.DeclaringType.AssemblyQualifiedName;
            }
            return(info);
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            string message;

            CodeArrayCreateExpression createExpression = (CodeArrayCreateExpression)expression;

            if (isWritten)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, typeof(CodeObjectCreateExpression).ToString());
                ValidationError error = new ValidationError(message, ErrorNumbers.Error_InvalidAssignTarget);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            if (createExpression.CreateType == null)
            {
                ValidationError error = new ValidationError(Messages.NullTypeType, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            Type resultType = validation.ResolveType(createExpression.CreateType);
            if (resultType == null)
                return null;

            // size CodeDom has limited support for arrays (only 1 dimensional, not more)
            // we limit CodeArrayCreateExpression to a single dimension
            // (i.e. CodeArrayCreateExpression cannot define int[5,3] or int[5][3], 
            // but it is possible to define int[][3] and then use initializers to 
            // fill it in. But we only support int[] or int[3].)
            if (resultType.IsArray)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.ArrayTypeInvalid, resultType.Name);
                ValidationError error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            try
            {
                // Early exit from this if a cycle is detected.
                if (!validation.PushParentExpression(createExpression))
                    return null;

                if (createExpression.Size < 0)
                {
                    ValidationError error = new ValidationError(Messages.ArraySizeInvalid, ErrorNumbers.Error_ParameterNotSet);
                    error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                    validation.Errors.Add(error);
                    return null;
                }

                // look up size (if specified)
                if (createExpression.SizeExpression != null)
                {
                    RuleExpressionInfo sizeInfo = RuleExpressionWalker.Validate(validation, createExpression.SizeExpression, false);
                    if (sizeInfo == null)
                        return null;
                    if ((sizeInfo.ExpressionType != typeof(int))
                        && (sizeInfo.ExpressionType != typeof(uint))
                        && (sizeInfo.ExpressionType != typeof(long))
                        && (sizeInfo.ExpressionType != typeof(ulong)))
                    {
                        message = string.Format(CultureInfo.CurrentCulture, Messages.ArraySizeTypeInvalid, sizeInfo.ExpressionType.Name);
                        ValidationError error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                        error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                        validation.Errors.Add(error);
                        return null;
                    }
                }
                bool parameterInvalid = false;
                for (int i = 0; i < createExpression.Initializers.Count; ++i)
                {
                    CodeExpression init = createExpression.Initializers[i];
                    if (init == null)
                    {
                        message = string.Format(CultureInfo.CurrentCulture, Messages.MissingInitializer, resultType.Name);
                        ValidationError error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                        error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                        validation.Errors.Add(error);
                        return null;
                    }
                    RuleExpressionInfo parameterInfo = RuleExpressionWalker.Validate(validation, init, false);
                    if (parameterInfo == null)
                    {
                        parameterInvalid = true;
                    }
                    else
                    {
                        // can we convert the result type to the array type?
                        ValidationError error;
                        if (!RuleValidation.StandardImplicitConversion(parameterInfo.ExpressionType, resultType, init, out error))
                        {
                            // types must match
                            if (error != null)
                            {
                                // we got an error from the conversion, so give it back as well as a new error
                                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                                validation.Errors.Add(error);
                            }
                            message = string.Format(CultureInfo.CurrentCulture, Messages.InitializerMismatch, i, resultType.Name);
                            error = new ValidationError(message, ErrorNumbers.Error_OperandTypesIncompatible);
                            error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                            validation.Errors.Add(error);
                            return null;
                        }
                    }
                }
                // if any errors get out
                if (parameterInvalid)
                    return null;

                // now it gets tricky. CodeArrayCreateExpression constructors allow:
                //     1) size as int
                //     2) size as CodeExpression
                //     3) initializers as params array
                // However, we allow a size and initializers, so try to verify size >= #initializers
                // size can be an int, uint, long, or ulong
                double size = -1;
                if (createExpression.SizeExpression != null)
                {
                    CodePrimitiveExpression prim = createExpression.SizeExpression as CodePrimitiveExpression;
                    if ((prim != null) && (prim.Value != null))
                        size = (double)Executor.AdjustType(prim.Value.GetType(), prim.Value, typeof(double));
                    if (createExpression.Size > 0)
                    {
                        // both size and SizeExpression specified, complain
                        ValidationError error = new ValidationError(Messages.ArraySizeBoth, ErrorNumbers.Error_ParameterNotSet);
                        error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                        validation.Errors.Add(error);
                        return null;
                    }
                }
                else if (createExpression.Size > 0)
                    size = createExpression.Size;

                if ((size >= 0) && (createExpression.Initializers.Count > size))
                {
                    message = string.Format(CultureInfo.CurrentCulture, Messages.InitializerCountMismatch, createExpression.Initializers.Count, size);
                    ValidationError error = new ValidationError(message, ErrorNumbers.Error_OperandTypesIncompatible);
                    error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                    validation.Errors.Add(error);
                    return null;
                }
            }
            finally
            {
                validation.PopParentExpression();
            }
            return new RuleExpressionInfo(resultType.MakeArrayType());
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            string message;
            ValidationError error;

            CodeObjectCreateExpression createExpression = (CodeObjectCreateExpression)expression;

            if (isWritten)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, typeof(CodeObjectCreateExpression).ToString());
                error = new ValidationError(message, ErrorNumbers.Error_InvalidAssignTarget);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            if (createExpression.CreateType == null)
            {
                error = new ValidationError(Messages.NullTypeType, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            Type resultType = validation.ResolveType(createExpression.CreateType);
            if (resultType == null)
                return null;

            // look up parameters
            List<CodeExpression> parameters = new List<CodeExpression>();
            try
            {
                // Early exit from this if a cycle is detected.
                if (!validation.PushParentExpression(createExpression))
                    return null;

                bool hasInvalidArgument = false;
                for (int i = 0; i < createExpression.Parameters.Count; ++i)
                {
                    CodeExpression parameter = createExpression.Parameters[i];
                    if (parameter == null)
                    {
                        message = string.Format(CultureInfo.CurrentCulture, Messages.NullConstructorParameter, i.ToString(CultureInfo.CurrentCulture), RuleDecompiler.DecompileType(resultType));
                        error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                        error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                        validation.Errors.Add(error);
                        hasInvalidArgument = true;
                    }
                    else
                    {
                        RuleExpressionInfo parameterInfo = RuleExpressionWalker.Validate(validation, parameter, false);
                        if (parameterInfo == null)
                            hasInvalidArgument = true;
                        parameters.Add(parameter);
                    }
                }
                // quit if parameters not valid
                if (hasInvalidArgument)
                    return null;
            }
            finally
            {
                validation.PopParentExpression();
            }

            // see if we can find the matching constructor
            BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance;
            if (validation.AllowInternalMembers(resultType))
                bindingFlags |= BindingFlags.NonPublic;

            // creating a value-type object with no parameters can always be done
            if ((resultType.IsValueType) && (parameters.Count == 0))
                return new RuleExpressionInfo(resultType);

            // error if type is an abstract type
            if (resultType.IsAbstract)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, RuleDecompiler.DecompileType(resultType));
                error = new ValidationError(message, ErrorNumbers.Error_MethodNotExists);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            RuleConstructorExpressionInfo constructorInvokeInfo = validation.ResolveConstructor(resultType, bindingFlags, parameters, out error);
            if (constructorInvokeInfo == null)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, RuleDecompiler.DecompileType(resultType));
                error = new ValidationError(message, ErrorNumbers.Error_MethodNotExists);
                error.UserData[RuleUserDataKeys.ErrorObject] = createExpression;
                validation.Errors.Add(error);
                return null;
            }

            return constructorInvokeInfo;
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            string message;

            CodeCastExpression castExpr = (CodeCastExpression)expression;

            if (isWritten)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, typeof(CodeCastExpression).ToString());
                ValidationError error = new ValidationError(message, ErrorNumbers.Error_InvalidAssignTarget);
                error.UserData[RuleUserDataKeys.ErrorObject] = castExpr;
                validation.Errors.Add(error);
                return null;
            }

            if (castExpr.Expression == null)
            {
                ValidationError error = new ValidationError(Messages.NullCastExpr, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = castExpr;
                validation.Errors.Add(error);
                return null;
            }

            if (castExpr.Expression is CodeTypeReferenceExpression)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, castExpr.Expression.GetType().FullName);
                ValidationError error = new ValidationError(message, ErrorNumbers.Error_CodeExpressionNotHandled);
                error.UserData[RuleUserDataKeys.ErrorObject] = castExpr.Expression;
                validation.AddError(error);
                return null;
            }

            if (castExpr.TargetType == null)
            {
                ValidationError error = new ValidationError(Messages.NullCastType, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = castExpr;
                validation.Errors.Add(error);
                return null;
            }

            // Figure out the operand type.
            RuleExpressionInfo operandInfo = RuleExpressionWalker.Validate(validation, castExpr.Expression, false);
            if (operandInfo == null)
                return null;
            Type fromType = operandInfo.ExpressionType;

            Type toType = validation.ResolveType(castExpr.TargetType);
            if (toType == null)
                return null;

            if (fromType == typeof(NullLiteral))
            {
                // Casting from null value.
                if (ConditionHelper.IsNonNullableValueType(toType))
                {
                    message = string.Format(CultureInfo.CurrentCulture, Messages.CastOfNullInvalid, RuleDecompiler.DecompileType(toType));
                    ValidationError error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                    error.UserData[RuleUserDataKeys.ErrorObject] = castExpr;
                    validation.Errors.Add(error);
                    return null;
                }
            }
            else
            {
                // Unwrap nullables to make life easy.
                Type fromType2 = fromType;
                if (ConditionHelper.IsNullableValueType(fromType2))
                    fromType2 = fromType2.GetGenericArguments()[0];

                Type toType2 = toType;
                if (ConditionHelper.IsNullableValueType(toType2))
                    toType2 = toType2.GetGenericArguments()[0];

                bool canConvert = false;
                if (fromType2.IsValueType && toType2.IsValueType)
                {
                    // Convert.ChangeType doesn't handle enum <--> numeric
                    // and float/double/decimal <--> char, which are allowed
                    if (fromType2.IsEnum)
                    {
                        canConvert = (toType2.IsEnum) || IsNumeric(toType2);
                    }
                    else if (toType2.IsEnum)
                    {
                        // don't need to check fromType for enum since it's handled above
                        canConvert = IsNumeric(fromType2);
                    }
                    else if (fromType2 == typeof(char))
                    {
                        canConvert = IsNumeric(toType2);
                    }
                    else if (toType2 == typeof(char))
                    {
                        canConvert = IsNumeric(fromType2);
                    }
                    else if (fromType2.IsPrimitive && toType2.IsPrimitive)
                    {
                        try
                        {
                            // note: this also allows bool <--> numeric conversions
                            object fromValueDefault = Activator.CreateInstance(fromType2);
                            Convert.ChangeType(fromValueDefault, toType2, CultureInfo.CurrentCulture);
                            canConvert = true;
                        }
                        catch (Exception)
                        {
                            canConvert = false;
                        }
                    }
                }

                if (!canConvert)
                {
                    // We can cast up or down an inheritence hierarchy,
                    // as well as support explicit and implicit overrides
                    ValidationError error;
                    canConvert = RuleValidation.ExplicitConversionSpecified(fromType, toType, out error);
                    if (error != null)
                    {
                        error.UserData[RuleUserDataKeys.ErrorObject] = castExpr;
                        validation.Errors.Add(error);
                        return null;
                    }
                }

                if (!canConvert)
                {
                    message = string.Format(CultureInfo.CurrentCulture, Messages.CastIncompatibleTypes, RuleDecompiler.DecompileType(fromType), RuleDecompiler.DecompileType(toType));
                    ValidationError error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                    error.UserData[RuleUserDataKeys.ErrorObject] = castExpr;
                    validation.Errors.Add(error);
                    return null;
                }
            }

            return new RuleExpressionInfo(toType);
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            CodeTypeReferenceExpression typeRefExpr = (CodeTypeReferenceExpression)expression;

            if (typeRefExpr.Type == null)
            {
                ValidationError error = new ValidationError(Messages.NullTypeType, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = typeRefExpr;
                validation.Errors.Add(error);
                return null;
            }

            if (isWritten)
            {
                string message = string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, typeof(CodeTypeReferenceExpression).ToString());
                ValidationError error = new ValidationError(message, ErrorNumbers.Error_InvalidAssignTarget);
                error.UserData[RuleUserDataKeys.ErrorObject] = typeRefExpr;
                validation.Errors.Add(error);
                return null;
            }

            Type resultType = validation.ResolveType(typeRefExpr.Type);

            return new RuleExpressionInfo(resultType);
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            Type targetType = null;
            RuleMethodInvokeExpressionInfo methodInvokeInfo = null;
            string message;
            ValidationError error = null;
            BindingFlags bindingFlags = BindingFlags.Public;

            CodeMethodInvokeExpression invokeExpr = (CodeMethodInvokeExpression)expression;

            if (isWritten)
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, typeof(CodeMethodInvokeExpression).ToString());
                error = new ValidationError(message, ErrorNumbers.Error_InvalidAssignTarget);
                error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                validation.Errors.Add(error);
                return null;
            }

            if ((invokeExpr.Method == null) || (invokeExpr.Method.TargetObject == null))
            {
                message = string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, invokeExpr.Method.MethodName);
                error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                validation.Errors.Add(error);
                return null; // Fatal error; discontinue validation of this object.
            }

            if ((invokeExpr.Method.TypeArguments != null) && (invokeExpr.Method.TypeArguments.Count > 0))
            {
                error = new ValidationError(Messages.GenericMethodsNotSupported, ErrorNumbers.Error_CodeExpressionNotHandled);
                error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                validation.Errors.Add(error);
                return null;
            }

            try
            {
                // Early exit from this if a cycle is detected.
                if (!validation.PushParentExpression(invokeExpr))
                    return null;

                RuleExpressionInfo targetExprInfo = RuleExpressionWalker.Validate(validation, invokeExpr.Method.TargetObject, false);
                if (targetExprInfo == null)     // error occurred, so simply return
                    return null;

                targetType = targetExprInfo.ExpressionType;
                if (targetType == null)
                    return null;

                // if an error occurred (targetType == null), continue on to validate the arguments
                if (targetType == typeof(NullLiteral))
                {
                    message = string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, invokeExpr.Method.MethodName);
                    error = new ValidationError(message, ErrorNumbers.Error_BindingTypeMissing);
                    error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                    validation.Errors.Add(error);
                    targetType = null; // force exit after validating the arguments
                }

                List<CodeExpression> argExprs = new List<CodeExpression>();

                bool hasInvalidArgument = false;
                if (invokeExpr.Parameters != null)
                {
                    for (int i = 0; i < invokeExpr.Parameters.Count; ++i)
                    {
                        CodeExpression argExpr = invokeExpr.Parameters[i];
                        if (argExpr == null)
                        {
                            message = string.Format(CultureInfo.CurrentCulture, Messages.NullMethodParameter, i.ToString(CultureInfo.CurrentCulture), invokeExpr.Method.MethodName);
                            error = new ValidationError(message, ErrorNumbers.Error_ParameterNotSet);
                            error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                            validation.Errors.Add(error);
                            targetType = null; // force exit after validating the rest of the arguments
                        }
                        else
                        {
                            if (argExpr is CodeTypeReferenceExpression)
                            {
                                message = string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, argExpr.GetType().FullName);
                                error = new ValidationError(message, ErrorNumbers.Error_CodeExpressionNotHandled);
                                error.UserData[RuleUserDataKeys.ErrorObject] = argExpr;
                                validation.AddError(error);

                                hasInvalidArgument = true;
                            }

                            // Validate the argument.
                            RuleExpressionInfo argExprInfo = RuleExpressionWalker.Validate(validation, argExpr, false);
                            if (argExprInfo == null)
                                hasInvalidArgument = true;
                            argExprs.Add(argExpr);
                        }
                    }
                }

                // Stop further validation if there was a problem with the target expression.
                if (targetType == null)
                    return null;

                // Stop further validation if there was a problem with any of the arguments.
                if (hasInvalidArgument)
                    return null;

                if (invokeExpr.Method.TargetObject is CodeTypeReferenceExpression)
                    bindingFlags |= BindingFlags.Static | BindingFlags.FlattenHierarchy;
                else
                    bindingFlags |= BindingFlags.Instance;
                if (validation.AllowInternalMembers(targetType))
                    bindingFlags |= BindingFlags.NonPublic;

                // Everything okay so far, try to resolve the method.
                methodInvokeInfo = validation.ResolveMethod(targetType, invokeExpr.Method.MethodName, bindingFlags, argExprs, out error);
                if ((methodInvokeInfo == null) && (invokeExpr.UserData.Contains(RuleUserDataKeys.QualifiedName)))
                {
                    // failed to resolve the method, but a fully qualified type name is around
                    // load the type, add it to the assemblies, and try again
                    string qualifiedName = invokeExpr.UserData[RuleUserDataKeys.QualifiedName] as string;
                    Type containingClassType = validation.ResolveType(qualifiedName);
                    if (containingClassType != null)
                    {
                        validation.DetermineExtensionMethods(containingClassType.Assembly);
                        methodInvokeInfo = validation.ResolveMethod(targetType, invokeExpr.Method.MethodName, bindingFlags, argExprs, out error);
                    }
                }
                if (methodInvokeInfo == null)
                {
                    error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                    validation.Errors.Add(error);
                    return null;
                }
            }
            finally
            {
                validation.PopParentExpression();
            }


            MethodInfo mi = methodInvokeInfo.MethodInfo;

            if (mi.ReturnType == null)
            {
                // This can only happen with a design-time type.
                message = string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, invokeExpr.Method.MethodName);
                error = new ValidationError(message, ErrorNumbers.Error_CouldNotDetermineMemberType);
                error.UserData[RuleUserDataKeys.ErrorObject] = invokeExpr;
                validation.Errors.Add(error);
                return null;
            }

            if (!validation.ValidateMemberAccess(invokeExpr.Method.TargetObject, targetType, mi, invokeExpr.Method.MethodName, invokeExpr))
                return null;

            // Validate any RuleAttributes, if present.
            object[] attrs = mi.GetCustomAttributes(typeof(RuleAttribute), true);
            if (attrs != null && attrs.Length > 0)
            {
                Stack<MemberInfo> methodStack = new Stack<MemberInfo>();
                methodStack.Push(mi);

                bool allAttributesValid = true;
                foreach (RuleAttribute ruleAttr in attrs)
                {
                    if (!ruleAttr.Validate(validation, mi, targetType, mi.GetParameters()))
                        allAttributesValid = false;
                }

                methodStack.Pop();

                if (!allAttributesValid)
                    return null;
            }

            // if this is an extension method, save the type information
            if (mi is ExtensionMethodInfo)
            {
                invokeExpr.UserData[RuleUserDataKeys.QualifiedName] = mi.DeclaringType.AssemblyQualifiedName;
            }

            return methodInvokeInfo;
        }
 internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
 {
     Type expressionType = null;
     RuleMethodInvokeExpressionInfo info = null;
     ValidationError item = null;
     BindingFlags @public = BindingFlags.Public;
     CodeMethodInvokeExpression newParent = (CodeMethodInvokeExpression) expression;
     if (isWritten)
     {
         item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeMethodInvokeExpression).ToString() }), 0x17a);
         item.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(item);
         return null;
     }
     if ((newParent.Method == null) || (newParent.Method.TargetObject == null))
     {
         item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x53d);
         item.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(item);
         return null;
     }
     if ((newParent.Method.TypeArguments != null) && (newParent.Method.TypeArguments.Count > 0))
     {
         item = new ValidationError(Messages.GenericMethodsNotSupported, 0x548);
         item.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(item);
         return null;
     }
     try
     {
         if (!validation.PushParentExpression(newParent))
         {
             return null;
         }
         RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, newParent.Method.TargetObject, false);
         if (info2 == null)
         {
             return null;
         }
         expressionType = info2.ExpressionType;
         if (expressionType == null)
         {
             return null;
         }
         if (expressionType == typeof(NullLiteral))
         {
             item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodTarget, new object[] { newParent.Method.MethodName }), 0x546);
             item.UserData["ErrorObject"] = newParent;
             validation.Errors.Add(item);
             expressionType = null;
         }
         List<CodeExpression> argumentExprs = new List<CodeExpression>();
         bool flag = false;
         if (newParent.Parameters != null)
         {
             for (int i = 0; i < newParent.Parameters.Count; i++)
             {
                 CodeExpression expression3 = newParent.Parameters[i];
                 if (expression3 == null)
                 {
                     item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullMethodParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), newParent.Method.MethodName }), 0x53d);
                     item.UserData["ErrorObject"] = newParent;
                     validation.Errors.Add(item);
                     expressionType = null;
                 }
                 else
                 {
                     if (expression3 is CodeTypeReferenceExpression)
                     {
                         item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression3.GetType().FullName }), 0x548);
                         item.UserData["ErrorObject"] = expression3;
                         validation.AddError(item);
                         flag = true;
                     }
                     if (RuleExpressionWalker.Validate(validation, expression3, false) == null)
                     {
                         flag = true;
                     }
                     argumentExprs.Add(expression3);
                 }
             }
         }
         if (expressionType == null)
         {
             return null;
         }
         if (flag)
         {
             return null;
         }
         if (newParent.Method.TargetObject is CodeTypeReferenceExpression)
         {
             @public |= BindingFlags.FlattenHierarchy | BindingFlags.Static;
         }
         else
         {
             @public |= BindingFlags.Instance;
         }
         if (validation.AllowInternalMembers(expressionType))
         {
             @public |= BindingFlags.NonPublic;
         }
         info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item);
         if ((info == null) && newParent.UserData.Contains("QualifiedName"))
         {
             string qualifiedName = newParent.UserData["QualifiedName"] as string;
             Type type2 = validation.ResolveType(qualifiedName);
             if (type2 != null)
             {
                 validation.DetermineExtensionMethods(type2.Assembly);
                 info = validation.ResolveMethod(expressionType, newParent.Method.MethodName, @public, argumentExprs, out item);
             }
         }
         if (info == null)
         {
             item.UserData["ErrorObject"] = newParent;
             validation.Errors.Add(item);
             return null;
         }
     }
     finally
     {
         validation.PopParentExpression();
     }
     MethodInfo methodInfo = info.MethodInfo;
     if (methodInfo.ReturnType == null)
     {
         item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.Method.MethodName }), 0x194);
         item.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(item);
         return null;
     }
     if (!validation.ValidateMemberAccess(newParent.Method.TargetObject, expressionType, methodInfo, newParent.Method.MethodName, newParent))
     {
         return null;
     }
     object[] customAttributes = methodInfo.GetCustomAttributes(typeof(RuleAttribute), true);
     if ((customAttributes != null) && (customAttributes.Length > 0))
     {
         Stack<MemberInfo> stack = new Stack<MemberInfo>();
         stack.Push(methodInfo);
         bool flag2 = true;
         foreach (RuleAttribute attribute in customAttributes)
         {
             if (!attribute.Validate(validation, methodInfo, expressionType, methodInfo.GetParameters()))
             {
                 flag2 = false;
             }
         }
         stack.Pop();
         if (!flag2)
         {
             return null;
         }
     }
     if (methodInfo is ExtensionMethodInfo)
     {
         newParent.UserData["QualifiedName"] = methodInfo.DeclaringType.AssemblyQualifiedName;
     }
     return info;
 }
 internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
 {
     ValidationError error;
     CodeObjectCreateExpression newParent = (CodeObjectCreateExpression) expression;
     if (isWritten)
     {
         error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeObjectCreateExpression).ToString() }), 0x17a);
         error.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(error);
         return null;
     }
     if (newParent.CreateType == null)
     {
         error = new ValidationError(Messages.NullTypeType, 0x53d);
         error.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(error);
         return null;
     }
     Type type = validation.ResolveType(newParent.CreateType);
     if (type == null)
     {
         return null;
     }
     List<CodeExpression> argumentExprs = new List<CodeExpression>();
     try
     {
         if (!validation.PushParentExpression(newParent))
         {
             return null;
         }
         bool flag = false;
         for (int i = 0; i < newParent.Parameters.Count; i++)
         {
             CodeExpression expression3 = newParent.Parameters[i];
             if (expression3 == null)
             {
                 error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullConstructorParameter, new object[] { i.ToString(CultureInfo.CurrentCulture), RuleDecompiler.DecompileType(type) }), 0x53d);
                 error.UserData["ErrorObject"] = newParent;
                 validation.Errors.Add(error);
                 flag = true;
             }
             else
             {
                 if (RuleExpressionWalker.Validate(validation, expression3, false) == null)
                 {
                     flag = true;
                 }
                 argumentExprs.Add(expression3);
             }
         }
         if (flag)
         {
             return null;
         }
     }
     finally
     {
         validation.PopParentExpression();
     }
     BindingFlags constructorBindingFlags = BindingFlags.Public | BindingFlags.Instance;
     if (validation.AllowInternalMembers(type))
     {
         constructorBindingFlags |= BindingFlags.NonPublic;
     }
     if (type.IsValueType && (argumentExprs.Count == 0))
     {
         return new RuleExpressionInfo(type);
     }
     if (type.IsAbstract)
     {
         error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, new object[] { RuleDecompiler.DecompileType(type) }), 0x137);
         error.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(error);
         return null;
     }
     RuleConstructorExpressionInfo info2 = validation.ResolveConstructor(type, constructorBindingFlags, argumentExprs, out error);
     if (info2 == null)
     {
         error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownConstructor, new object[] { RuleDecompiler.DecompileType(type) }), 0x137);
         error.UserData["ErrorObject"] = newParent;
         validation.Errors.Add(error);
         return null;
     }
     return info2;
 }