Exemplo n.º 1
0
        internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
        {
            CodeCastExpression expression2  = (CodeCastExpression)expression;
            object             operandValue = RuleExpressionWalker.Evaluate(execution, expression2.Expression).Value;
            RuleExpressionInfo info         = execution.Validation.ExpressionInfo(expression2);

            if (info == null)
            {
                InvalidOperationException exception = new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Messages.ExpressionNotValidated, new object[0]));
                exception.Data["ErrorObject"] = expression2;
                throw exception;
            }
            Type expressionType = info.ExpressionType;

            if (operandValue == null)
            {
                if (ConditionHelper.IsNonNullableValueType(expressionType))
                {
                    RuleEvaluationException exception2 = new RuleEvaluationException(string.Format(CultureInfo.CurrentCulture, Messages.CastIncompatibleTypes, new object[] { Messages.NullValue, RuleDecompiler.DecompileType(expressionType) }));
                    exception2.Data["ErrorObject"] = expression2;
                    throw exception2;
                }
            }
            else
            {
                operandValue = Executor.AdjustTypeWithCast(execution.Validation.ExpressionInfo(expression2.Expression).ExpressionType, operandValue, expressionType);
            }
            return(new RuleLiteralResult(operandValue));
        }
Exemplo n.º 2
0
        public static RuleExpressionInfo Validate(RuleValidation validation, CodeExpression expression, bool isWritten)
        {
            if (validation == null)
            {
                throw new ArgumentNullException("validation");
            }

            // See if we've visited this node before.
            // Always check if written = true
            RuleExpressionInfo resultExprInfo = null;

            if (!isWritten)
            {
                resultExprInfo = validation.ExpressionInfo(expression);
            }
            if (resultExprInfo == null)
            {
                // First time we've seen this node.
                RuleExpressionInternal ruleExpr = GetExpression(expression);
                if (ruleExpr == null)
                {
                    string          message = string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, expression.GetType().FullName);
                    ValidationError error   = new ValidationError(message, ErrorNumbers.Error_CodeExpressionNotHandled);
                    error.UserData[RuleUserDataKeys.ErrorObject] = expression;

                    if (validation.Errors == null)
                    {
                        string typeName = string.Empty;
                        if ((validation.ThisType != null) && (validation.ThisType.Name != null))
                        {
                            typeName = validation.ThisType.Name;
                        }

                        string exceptionMessage = string.Format(
                            CultureInfo.CurrentCulture, Messages.ErrorsCollectionMissing, typeName);

                        throw new InvalidOperationException(exceptionMessage);
                    }
                    else
                    {
                        validation.Errors.Add(error);
                    }

                    return(null);
                }

                resultExprInfo = validation.ValidateSubexpression(expression, ruleExpr, isWritten);
            }

            return(resultExprInfo);
        }
Exemplo n.º 3
0
        public static RuleExpressionInfo Validate(RuleValidation validation, CodeExpression expression, bool isWritten)
        {
            if (validation == null)
            {
                throw new ArgumentNullException("validation");
            }
            RuleExpressionInfo info = null;

            if (!isWritten)
            {
                info = validation.ExpressionInfo(expression);
            }
            if (info != null)
            {
                return(info);
            }
            RuleExpressionInternal ruleExpr = GetExpression(expression);

            if (ruleExpr == null)
            {
                ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression.GetType().FullName }), 0x548);
                item.UserData["ErrorObject"] = expression;
                if (validation.Errors == null)
                {
                    string name = string.Empty;
                    if ((validation.ThisType != null) && (validation.ThisType.Name != null))
                    {
                        name = validation.ThisType.Name;
                    }
                    throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Messages.ErrorsCollectionMissing, new object[] { name }));
                }
                validation.Errors.Add(item);
                return(null);
            }
            return(validation.ValidateSubexpression(expression, ruleExpr, isWritten));
        }
        internal override bool Validate(RuleValidation validation)
        {
            bool success = false;

            if (exprStatement.Expression == null)
            {
                ValidationError error = new ValidationError(Messages.NullInvokeStatementExpression, ErrorNumbers.Error_ParameterNotSet);
                error.UserData[RuleUserDataKeys.ErrorObject] = exprStatement;
                validation.Errors.Add(error);
            }
            else if (exprStatement.Expression is CodeMethodInvokeExpression)
            {
                RuleExpressionInfo exprInfo = RuleExpressionWalker.Validate(validation, exprStatement.Expression, false);
                success = (exprInfo != null);
            }
            else
            {
                ValidationError error = new ValidationError(Messages.InvokeNotHandled, ErrorNumbers.Error_CodeExpressionNotHandled);
                error.UserData[RuleUserDataKeys.ErrorObject] = exprStatement;
                validation.Errors.Add(error);
            }

            return(success);
        }
Exemplo n.º 5
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)
        {
            ValidationError error;
            CodeBinaryOperatorExpression newParent = (CodeBinaryOperatorExpression)expression;

            if (!validation.PushParentExpression(newParent))
            {
                return(null);
            }
            if (isWritten)
            {
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotWriteToExpression, new object[] { typeof(CodeBinaryOperatorExpression).ToString() }), 0x17a);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
            }
            RuleExpressionInfo info  = null;
            RuleExpressionInfo info2 = null;

            if (newParent.Left == null)
            {
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullBinaryOpLHS, new object[] { newParent.Operator.ToString() }), 0x541);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
            }
            else
            {
                if (newParent.Left is CodeTypeReferenceExpression)
                {
                    error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { newParent.Left.GetType().FullName }), 0x548);
                    error.UserData["ErrorObject"] = newParent.Left;
                    validation.AddError(error);
                    return(null);
                }
                info = RuleExpressionWalker.Validate(validation, newParent.Left, false);
            }
            if (newParent.Right == null)
            {
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullBinaryOpRHS, new object[] { newParent.Operator.ToString() }), 0x543);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
            }
            else
            {
                if (newParent.Right is CodeTypeReferenceExpression)
                {
                    error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { newParent.Right.GetType().FullName }), 0x548);
                    error.UserData["ErrorObject"] = newParent.Right;
                    validation.AddError(error);
                    return(null);
                }
                info2 = RuleExpressionWalker.Validate(validation, newParent.Right, false);
            }
            validation.PopParentExpression();
            RuleBinaryExpressionInfo info3 = null;

            if ((info != null) && (info2 != null))
            {
                Type expressionType = info.ExpressionType;
                Type rhs            = info2.ExpressionType;
                switch (newParent.Operator)
                {
                case CodeBinaryOperatorType.Add:
                case CodeBinaryOperatorType.Subtract:
                case CodeBinaryOperatorType.Multiply:
                case CodeBinaryOperatorType.Divide:
                case CodeBinaryOperatorType.Modulus:
                case CodeBinaryOperatorType.BitwiseOr:
                case CodeBinaryOperatorType.BitwiseAnd:
                    info3 = ArithmeticLiteral.ResultType(newParent.Operator, expressionType, newParent.Left, rhs, newParent.Right, validation, out error);
                    if (info3 == null)
                    {
                        if ((!(expressionType == typeof(ulong)) || !PromotionPossible(rhs, newParent.Right)) && (!(rhs == typeof(ulong)) || !PromotionPossible(expressionType, newParent.Left)))
                        {
                            error.UserData["ErrorObject"] = newParent;
                            validation.Errors.Add(error);
                        }
                        else
                        {
                            info3 = new RuleBinaryExpressionInfo(expressionType, rhs, typeof(ulong));
                        }
                    }
                    goto Label_063E;

                case CodeBinaryOperatorType.IdentityInequality:
                case CodeBinaryOperatorType.IdentityEquality:
                    info3 = new RuleBinaryExpressionInfo(expressionType, rhs, typeof(bool));
                    goto Label_063E;

                case CodeBinaryOperatorType.ValueEquality:
                    info3 = Literal.AllowedComparison(expressionType, newParent.Left, rhs, newParent.Right, newParent.Operator, validation, out error);
                    if (info3 == null)
                    {
                        if ((!(expressionType == typeof(ulong)) || !PromotionPossible(rhs, newParent.Right)) && (!(rhs == typeof(ulong)) || !PromotionPossible(expressionType, newParent.Left)))
                        {
                            error.UserData["ErrorObject"] = newParent;
                            validation.Errors.Add(error);
                        }
                        else
                        {
                            info3 = new RuleBinaryExpressionInfo(expressionType, rhs, typeof(bool));
                        }
                    }
                    goto Label_063E;

                case CodeBinaryOperatorType.BooleanOr:
                case CodeBinaryOperatorType.BooleanAnd:
                    info3 = new RuleBinaryExpressionInfo(expressionType, rhs, typeof(bool));
                    if (expressionType != typeof(bool))
                    {
                        error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.LogicalOpBadTypeLHS, new object[] { newParent.Operator.ToString(), (expressionType == typeof(NullLiteral)) ? Messages.NullValue : RuleDecompiler.DecompileType(expressionType) }), 0x542);
                        error.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(error);
                        info3 = null;
                    }
                    if (rhs != typeof(bool))
                    {
                        error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.LogicalOpBadTypeRHS, new object[] { newParent.Operator.ToString(), (rhs == typeof(NullLiteral)) ? Messages.NullValue : RuleDecompiler.DecompileType(rhs) }), 0x544);
                        error.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(error);
                        info3 = null;
                    }
                    goto Label_063E;

                case CodeBinaryOperatorType.LessThan:
                case CodeBinaryOperatorType.LessThanOrEqual:
                case CodeBinaryOperatorType.GreaterThan:
                case CodeBinaryOperatorType.GreaterThanOrEqual:
                    info3 = Literal.AllowedComparison(expressionType, newParent.Left, rhs, newParent.Right, newParent.Operator, validation, out error);
                    if (info3 == null)
                    {
                        if ((!(expressionType == typeof(ulong)) || !PromotionPossible(rhs, newParent.Right)) && (!(rhs == typeof(ulong)) || !PromotionPossible(expressionType, newParent.Left)))
                        {
                            error.UserData["ErrorObject"] = newParent;
                            validation.Errors.Add(error);
                        }
                        else
                        {
                            info3 = new RuleBinaryExpressionInfo(expressionType, rhs, typeof(bool));
                        }
                    }
                    goto Label_063E;
                }
                error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.BinaryOpNotSupported, new object[] { newParent.Operator.ToString() }), 0x548);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
            }
Label_063E:
            if (info3 != null)
            {
                MethodInfo methodInfo = info3.MethodInfo;
                if (methodInfo == null)
                {
                    return(info3);
                }
                object[] customAttributes = methodInfo.GetCustomAttributes(typeof(RuleAttribute), true);
                if ((customAttributes == null) || (customAttributes.Length <= 0))
                {
                    return(info3);
                }
                Stack <MemberInfo> stack = new Stack <MemberInfo>();
                stack.Push(methodInfo);
                bool flag = true;
                foreach (RuleAttribute attribute in customAttributes)
                {
                    if (!attribute.Validate(validation, methodInfo, methodInfo.DeclaringType, methodInfo.GetParameters()))
                    {
                        flag = false;
                    }
                }
                stack.Pop();
                if (!flag)
                {
                    return(null);
                }
            }
            return(info3);
        }
        internal override bool Validate(RuleValidation validation)
        {
            bool               success = false;
            string             message;
            RuleExpressionInfo lhsExprInfo = null;

            if (assignStatement.Left == null)
            {
                ValidationError error = new ValidationError(Messages.NullAssignLeft, ErrorNumbers.Error_LeftOperandMissing);
                error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
                validation.Errors.Add(error);
            }
            else
            {
                lhsExprInfo = validation.ExpressionInfo(assignStatement.Left);
                if (lhsExprInfo == null)
                {
                    lhsExprInfo = RuleExpressionWalker.Validate(validation, assignStatement.Left, true);
                }
            }

            RuleExpressionInfo rhsExprInfo = null;

            if (assignStatement.Right == null)
            {
                ValidationError error = new ValidationError(Messages.NullAssignRight, ErrorNumbers.Error_RightOperandMissing);
                error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
                validation.Errors.Add(error);
            }
            else
            {
                rhsExprInfo = RuleExpressionWalker.Validate(validation, assignStatement.Right, false);
            }

            if (lhsExprInfo != null && rhsExprInfo != null)
            {
                Type expressionType = rhsExprInfo.ExpressionType;
                Type assignmentType = lhsExprInfo.ExpressionType;

                if (assignmentType == typeof(NullLiteral))
                {
                    // Can't assign to a null literal.
                    ValidationError error = new ValidationError(Messages.NullAssignLeft, ErrorNumbers.Error_LeftOperandInvalidType);
                    error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
                    validation.Errors.Add(error);
                    success = false;
                }
                else if (assignmentType == expressionType)
                {
                    // Easy case, they're both the same type.
                    success = true;
                }
                else
                {
                    // The types aren't the same, but it still might be a legal assignment.
                    if (!RuleValidation.TypesAreAssignable(expressionType, assignmentType, assignStatement.Right, out ValidationError error))
                    {
                        if (error == null)
                        {
                            message = string.Format(CultureInfo.CurrentCulture, Messages.AssignNotAllowed, RuleDecompiler.DecompileType(expressionType), RuleDecompiler.DecompileType(assignmentType));
                            error   = new ValidationError(message, ErrorNumbers.Error_OperandTypesIncompatible);
                        }
                        error.UserData[RuleUserDataKeys.ErrorObject] = assignStatement;
                        validation.Errors.Add(error);
                    }
                    else
                    {
                        success = true;
                    }
                }
            }

            return(success);
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            CodeFieldReferenceExpression newParent = (CodeFieldReferenceExpression)expression;

            if (newParent.TargetObject == null)
            {
                ValidationError item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullFieldTarget, new object[] { newParent.FieldName }), 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if (!validation.PushParentExpression(newParent))
            {
                return(null);
            }
            RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.TargetObject, false);

            validation.PopParentExpression();
            if (info == null)
            {
                return(null);
            }
            Type expressionType = info.ExpressionType;

            if (expressionType == null)
            {
                return(null);
            }
            if (expressionType == typeof(NullLiteral))
            {
                ValidationError error2 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullFieldTarget, new object[] { newParent.FieldName }), 0x546);
                error2.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error2);
                return(null);
            }
            BindingFlags @public = BindingFlags.Public;

            if (newParent.TargetObject is CodeTypeReferenceExpression)
            {
                @public |= BindingFlags.FlattenHierarchy | BindingFlags.Static;
            }
            else
            {
                @public |= BindingFlags.Instance;
            }
            if (validation.AllowInternalMembers(expressionType))
            {
                @public |= BindingFlags.NonPublic;
            }
            FieldInfo field = expressionType.GetField(newParent.FieldName, @public);

            if (field == null)
            {
                ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownField, new object[] { newParent.FieldName, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
                error3.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error3);
                return(null);
            }
            if (field.FieldType == null)
            {
                ValidationError error4 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.FieldName }), 0x194);
                error4.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error4);
                return(null);
            }
            if (isWritten && field.IsLiteral)
            {
                ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.FieldSetNotAllowed, new object[] { newParent.FieldName, RuleDecompiler.DecompileType(expressionType) }), 0x17a);
                error5.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error5);
                return(null);
            }
            if (!validation.ValidateMemberAccess(newParent.TargetObject, expressionType, field, field.Name, newParent))
            {
                return(null);
            }
            validation.IsAuthorized(field.FieldType);
            return(new RuleFieldExpressionInfo(field));
        }
Exemplo n.º 9
0
        internal override bool Validate(RuleValidation validation)
        {
            bool flag = false;
            RuleExpressionInfo info = null;

            if (this.assignStatement.Left == null)
            {
                ValidationError item = new ValidationError(Messages.NullAssignLeft, 0x541);
                item.UserData["ErrorObject"] = this.assignStatement;
                validation.Errors.Add(item);
            }
            else
            {
                info = validation.ExpressionInfo(this.assignStatement.Left);
                if (info == null)
                {
                    info = RuleExpressionWalker.Validate(validation, this.assignStatement.Left, true);
                }
            }
            RuleExpressionInfo info2 = null;

            if (this.assignStatement.Right == null)
            {
                ValidationError error2 = new ValidationError(Messages.NullAssignRight, 0x543);
                error2.UserData["ErrorObject"] = this.assignStatement;
                validation.Errors.Add(error2);
            }
            else
            {
                info2 = RuleExpressionWalker.Validate(validation, this.assignStatement.Right, false);
            }
            if ((info == null) || (info2 == null))
            {
                return(flag);
            }
            Type expressionType = info2.ExpressionType;
            Type lhsType        = info.ExpressionType;

            if (lhsType == typeof(NullLiteral))
            {
                ValidationError error3 = new ValidationError(Messages.NullAssignLeft, 0x542);
                error3.UserData["ErrorObject"] = this.assignStatement;
                validation.Errors.Add(error3);
                return(false);
            }
            if (lhsType != expressionType)
            {
                ValidationError error = null;
                if (!RuleValidation.TypesAreAssignable(expressionType, lhsType, this.assignStatement.Right, out error))
                {
                    if (error == null)
                    {
                        error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.AssignNotAllowed, new object[] { RuleDecompiler.DecompileType(expressionType), RuleDecompiler.DecompileType(lhsType) }), 0x545);
                    }
                    error.UserData["ErrorObject"] = this.assignStatement;
                    validation.Errors.Add(error);
                    return(flag);
                }
            }
            return(true);
        }
Exemplo n.º 10
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()));
        }
Exemplo n.º 11
0
        internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
        {
            CodeArrayCreateExpression expression2 = (CodeArrayCreateExpression)expression;

            if (expression2.CreateType == null)
            {
                RuleEvaluationException exception = new RuleEvaluationException(Messages.NullTypeType);
                exception.Data["ErrorObject"] = expression2;
                throw exception;
            }
            RuleExpressionInfo info = execution.Validation.ExpressionInfo(expression2);

            if (expression2 == null)
            {
                InvalidOperationException exception2 = new InvalidOperationException(Messages.ExpressionNotValidated);
                exception2.Data["ErrorObject"] = expression2;
                throw exception2;
            }
            Type elementType = info.ExpressionType.GetElementType();
            int  length      = 0;

            if (expression2.SizeExpression != null)
            {
                Type expressionType         = execution.Validation.ExpressionInfo(expression2.SizeExpression).ExpressionType;
                RuleExpressionResult result = RuleExpressionWalker.Evaluate(execution, expression2.SizeExpression);
                if (expressionType == typeof(int))
                {
                    length = (int)result.Value;
                }
                else if (expressionType == typeof(long))
                {
                    length = (int)((long)result.Value);
                }
                else if (expressionType == typeof(uint))
                {
                    length = (int)((uint)result.Value);
                }
                else if (expressionType == typeof(ulong))
                {
                    length = (int)((ulong)result.Value);
                }
            }
            else if (expression2.Size != 0)
            {
                length = expression2.Size;
            }
            else
            {
                length = expression2.Initializers.Count;
            }
            Array literal = Array.CreateInstance(elementType, length);

            if (expression2.Initializers != null)
            {
                for (int i = 0; i < expression2.Initializers.Count; i++)
                {
                    CodeExpression       expression3 = expression2.Initializers[i];
                    Type                 operandType = execution.Validation.ExpressionInfo(expression3).ExpressionType;
                    RuleExpressionResult result2     = RuleExpressionWalker.Evaluate(execution, expression3);
                    literal.SetValue(Executor.AdjustType(operandType, result2.Value, elementType), i);
                }
            }
            return(new RuleLiteralResult(literal));
        }
        internal override RuleExpressionResult Evaluate(CodeExpression expression, RuleExecution execution)
        {
            object obj2;
            CodeObjectCreateExpression expression2 = (CodeObjectCreateExpression)expression;

            if (expression2.CreateType == null)
            {
                RuleEvaluationException exception = new RuleEvaluationException(Messages.NullTypeType);
                exception.Data["ErrorObject"] = expression2;
                throw exception;
            }
            RuleExpressionInfo info = execution.Validation.ExpressionInfo(expression2);

            if (info == null)
            {
                InvalidOperationException exception2 = new InvalidOperationException(Messages.ExpressionNotValidated);
                exception2.Data["ErrorObject"] = expression2;
                throw exception2;
            }
            RuleConstructorExpressionInfo info2 = info as RuleConstructorExpressionInfo;

            if (info2 == null)
            {
                return(new RuleLiteralResult(Activator.CreateInstance(info.ExpressionType)));
            }
            ConstructorInfo constructorInfo = info2.ConstructorInfo;

            object[] parameters = null;
            RuleExpressionResult[] resultArray = null;
            if ((expression2.Parameters != null) && (expression2.Parameters.Count > 0))
            {
                int             count     = expression2.Parameters.Count;
                ParameterInfo[] infoArray = constructorInfo.GetParameters();
                parameters = new object[infoArray.Length];
                int length = infoArray.Length;
                if (info2.NeedsParamsExpansion)
                {
                    length--;
                }
                int index = 0;
                while (index < length)
                {
                    Type expressionType                 = execution.Validation.ExpressionInfo(expression2.Parameters[index]).ExpressionType;
                    RuleExpressionResult    result      = RuleExpressionWalker.Evaluate(execution, expression2.Parameters[index]);
                    CodeDirectionExpression expression3 = expression2.Parameters[index] as CodeDirectionExpression;
                    if ((expression3 != null) && ((expression3.Direction == FieldDirection.Ref) || (expression3.Direction == FieldDirection.Out)))
                    {
                        if (resultArray == null)
                        {
                            resultArray = new RuleExpressionResult[count];
                        }
                        resultArray[index] = result;
                    }
                    parameters[index] = Executor.AdjustType(expressionType, result.Value, infoArray[index].ParameterType);
                    index++;
                }
                if (length < count)
                {
                    ParameterInfo info4       = infoArray[length];
                    Type          elementType = info4.ParameterType.GetElementType();
                    Array         array       = Array.CreateInstance(elementType, (int)(count - index));
                    while (index < count)
                    {
                        Type operandType             = execution.Validation.ExpressionInfo(expression2.Parameters[index]).ExpressionType;
                        RuleExpressionResult result2 = RuleExpressionWalker.Evaluate(execution, expression2.Parameters[index]);
                        array.SetValue(Executor.AdjustType(operandType, result2.Value, elementType), (int)(index - length));
                        index++;
                    }
                    parameters[length] = array;
                }
            }
            try
            {
                obj2 = constructorInfo.Invoke(parameters);
            }
            catch (TargetInvocationException exception3)
            {
                if (exception3.InnerException == null)
                {
                    throw;
                }
                throw new TargetInvocationException(string.Format(CultureInfo.CurrentCulture, Messages.Error_ConstructorInvoke, new object[] { RuleDecompiler.DecompileType(info2.ExpressionType), exception3.InnerException.Message }), exception3.InnerException);
            }
            if (resultArray != null)
            {
                for (int i = 0; i < expression2.Parameters.Count; i++)
                {
                    if (resultArray[i] != null)
                    {
                        resultArray[i].Value = parameters[i];
                    }
                }
            }
            return(new RuleLiteralResult(obj2));
        }
Exemplo n.º 13
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);
        }
Exemplo n.º 14
0
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            CodePropertyReferenceExpression newParent = (CodePropertyReferenceExpression)expression;

            if (newParent.TargetObject == null)
            {
                ValidationError error = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullPropertyTarget, new object[] { newParent.PropertyName }), 0x53d);
                error.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error);
                return(null);
            }
            if (!validation.PushParentExpression(newParent))
            {
                return(null);
            }
            RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.TargetObject, false);

            validation.PopParentExpression();
            if (info == null)
            {
                return(null);
            }
            Type expressionType = info.ExpressionType;

            if (expressionType == null)
            {
                return(null);
            }
            if (expressionType == typeof(NullLiteral))
            {
                ValidationError error2 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.NullPropertyTarget, new object[] { newParent.PropertyName }), 0x546);
                error2.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error2);
                return(null);
            }
            bool         nonPublic    = false;
            BindingFlags bindingFlags = BindingFlags.FlattenHierarchy | BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;

            if (validation.AllowInternalMembers(expressionType))
            {
                bindingFlags |= BindingFlags.NonPublic;
                nonPublic     = true;
            }
            PropertyInfo item = validation.ResolveProperty(expressionType, newParent.PropertyName, bindingFlags);

            if (item == null)
            {
                ValidationError error3 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.UnknownProperty, new object[] { newParent.PropertyName, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
                error3.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error3);
                return(null);
            }
            if (item.PropertyType == null)
            {
                ValidationError error4 = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CouldNotDetermineMemberType, new object[] { newParent.PropertyName }), 0x194);
                error4.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error4);
                return(null);
            }
            MethodInfo accessorMethod = isWritten ? item.GetSetMethod(nonPublic) : item.GetGetMethod(nonPublic);

            if (accessorMethod == null)
            {
                string          format = isWritten ? Messages.UnknownPropertySet : Messages.UnknownPropertyGet;
                ValidationError error5 = new ValidationError(string.Format(CultureInfo.CurrentCulture, format, new object[] { newParent.PropertyName, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
                error5.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(error5);
                return(null);
            }
            if (!validation.ValidateMemberAccess(newParent.TargetObject, expressionType, accessorMethod, newParent.PropertyName, newParent))
            {
                return(null);
            }
            object[] customAttributes = item.GetCustomAttributes(typeof(RuleAttribute), true);
            if ((customAttributes != null) && (customAttributes.Length > 0))
            {
                Stack <MemberInfo> stack = new Stack <MemberInfo>();
                stack.Push(item);
                bool flag2 = true;
                foreach (RuleAttribute attribute in customAttributes)
                {
                    if (!attribute.Validate(validation, item, expressionType, null))
                    {
                        flag2 = false;
                    }
                }
                stack.Pop();
                if (!flag2)
                {
                    return(null);
                }
            }
            return(new RulePropertyExpressionInfo(item, item.PropertyType, false));
        }
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            ValidationError            item           = null;
            Type                       expressionType = null;
            CodeArrayIndexerExpression newParent      = (CodeArrayIndexerExpression)expression;
            CodeExpression             targetObject   = newParent.TargetObject;

            if (targetObject == null)
            {
                item = new ValidationError(Messages.NullIndexerTarget, 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if (targetObject is CodeTypeReferenceExpression)
            {
                item = new ValidationError(Messages.IndexersCannotBeStatic, 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if ((newParent.Indices == null) || (newParent.Indices.Count == 0))
            {
                item = new ValidationError(Messages.MissingIndexExpressions, 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            try
            {
                if (!validation.PushParentExpression(newParent))
                {
                    return(null);
                }
                RuleExpressionInfo info = RuleExpressionWalker.Validate(validation, newParent.TargetObject, false);
                if (info == null)
                {
                    return(null);
                }
                expressionType = info.ExpressionType;
                if (expressionType == null)
                {
                    return(null);
                }
                if (expressionType == typeof(NullLiteral))
                {
                    item = new ValidationError(Messages.NullIndexerTarget, 0x53d);
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    return(null);
                }
                if (!expressionType.IsArray)
                {
                    item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CannotIndexType, new object[] { RuleDecompiler.DecompileType(expressionType) }), 0x19b);
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    return(null);
                }
                int arrayRank = expressionType.GetArrayRank();
                if (newParent.Indices.Count != arrayRank)
                {
                    item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayIndexBadRank, new object[] { arrayRank }), 0x19c);
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    return(null);
                }
                bool flag = false;
                for (int i = 0; i < newParent.Indices.Count; i++)
                {
                    CodeExpression expression4 = newParent.Indices[i];
                    if (expression4 == null)
                    {
                        item = new ValidationError(Messages.NullIndexExpression, 0x53d);
                        item.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(item);
                        flag = true;
                        continue;
                    }
                    if (expression4 is CodeDirectionExpression)
                    {
                        item = new ValidationError(Messages.IndexerArgCannotBeRefOrOut, 0x19d);
                        item.UserData["ErrorObject"] = expression4;
                        validation.Errors.Add(item);
                        flag = true;
                    }
                    if (expression4 is CodeTypeReferenceExpression)
                    {
                        item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression4.GetType().FullName }), 0x548);
                        item.UserData["ErrorObject"] = expression4;
                        validation.AddError(item);
                        flag = true;
                    }
                    RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, expression4, false);
                    if (info2 != null)
                    {
                        Type type = info2.ExpressionType;
                        switch (Type.GetTypeCode(type))
                        {
                        case TypeCode.Char:
                        case TypeCode.SByte:
                        case TypeCode.Byte:
                        case TypeCode.Int16:
                        case TypeCode.UInt16:
                        case TypeCode.Int32:
                        case TypeCode.Int64:
                        {
                            continue;
                        }
                        }
                        item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.ArrayIndexBadType, new object[] { RuleDecompiler.DecompileType(type) }), 0x19e);
                        item.UserData["ErrorObject"] = expression4;
                        validation.Errors.Add(item);
                        flag = true;
                        continue;
                    }
                    flag = true;
                }
                if (flag)
                {
                    return(null);
                }
            }
            finally
            {
                validation.PopParentExpression();
            }
            return(new RuleExpressionInfo(expressionType.GetElementType()));
        }
Exemplo n.º 16
0
        internal override RuleExpressionInfo Validate(CodeExpression expression, RuleValidation validation, bool isWritten)
        {
            ValidationError            item = null;
            RulePropertyExpressionInfo info = null;
            bool nonPublic                     = false;
            Type expressionType                = null;
            CodeIndexerExpression newParent    = (CodeIndexerExpression)expression;
            CodeExpression        targetObject = newParent.TargetObject;

            if (targetObject == null)
            {
                item = new ValidationError(Messages.NullIndexerTarget, 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if (targetObject is CodeTypeReferenceExpression)
            {
                item = new ValidationError(Messages.IndexersCannotBeStatic, 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if ((newParent.Indices == null) || (newParent.Indices.Count == 0))
            {
                item = new ValidationError(Messages.MissingIndexExpressions, 0x53d);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            try
            {
                if (!validation.PushParentExpression(newParent))
                {
                    return(null);
                }
                RuleExpressionInfo info2 = RuleExpressionWalker.Validate(validation, newParent.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.NullIndexerTarget, new object[0]), 0x53d);
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    expressionType = null;
                }
                List <CodeExpression> argumentExprs = new List <CodeExpression>();
                bool flag2 = false;
                for (int i = 0; i < newParent.Indices.Count; i++)
                {
                    CodeExpression expression4 = newParent.Indices[i];
                    if (expression4 == null)
                    {
                        item = new ValidationError(Messages.NullIndexExpression, 0x53d);
                        item.UserData["ErrorObject"] = newParent;
                        validation.Errors.Add(item);
                        flag2 = true;
                    }
                    else
                    {
                        CodeDirectionExpression expression5 = expression4 as CodeDirectionExpression;
                        if ((expression5 != null) && (expression5.Direction != FieldDirection.In))
                        {
                            item = new ValidationError(Messages.IndexerArgCannotBeRefOrOut, 0x19d);
                            item.UserData["ErrorObject"] = newParent;
                            validation.Errors.Add(item);
                            flag2 = true;
                        }
                        if (expression4 is CodeTypeReferenceExpression)
                        {
                            item = new ValidationError(string.Format(CultureInfo.CurrentCulture, Messages.CodeExpressionNotHandled, new object[] { expression4.GetType().FullName }), 0x548);
                            item.UserData["ErrorObject"] = expression4;
                            validation.AddError(item);
                            flag2 = true;
                        }
                        if (RuleExpressionWalker.Validate(validation, expression4, false) == null)
                        {
                            flag2 = true;
                        }
                        else
                        {
                            argumentExprs.Add(expression4);
                        }
                    }
                }
                if (expressionType == null)
                {
                    return(null);
                }
                if (flag2)
                {
                    return(null);
                }
                BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance;
                if (validation.AllowInternalMembers(expressionType))
                {
                    bindingFlags |= BindingFlags.NonPublic;
                    nonPublic     = true;
                }
                info = validation.ResolveIndexerProperty(expressionType, bindingFlags, argumentExprs, out item);
                if (info == null)
                {
                    item.UserData["ErrorObject"] = newParent;
                    validation.Errors.Add(item);
                    return(null);
                }
            }
            finally
            {
                validation.PopParentExpression();
            }
            PropertyInfo propertyInfo   = info.PropertyInfo;
            MethodInfo   accessorMethod = isWritten ? propertyInfo.GetSetMethod(nonPublic) : propertyInfo.GetGetMethod(nonPublic);

            if (accessorMethod == null)
            {
                string format = isWritten ? Messages.UnknownPropertySet : Messages.UnknownPropertyGet;
                item = new ValidationError(string.Format(CultureInfo.CurrentCulture, format, new object[] { propertyInfo.Name, RuleDecompiler.DecompileType(expressionType) }), 0x54a);
                item.UserData["ErrorObject"] = newParent;
                validation.Errors.Add(item);
                return(null);
            }
            if (!validation.ValidateMemberAccess(targetObject, expressionType, accessorMethod, propertyInfo.Name, newParent))
            {
                return(null);
            }
            object[] customAttributes = propertyInfo.GetCustomAttributes(typeof(RuleAttribute), true);
            if ((customAttributes != null) && (customAttributes.Length > 0))
            {
                Stack <MemberInfo> stack = new Stack <MemberInfo>();
                stack.Push(propertyInfo);
                bool flag3 = true;
                foreach (RuleAttribute attribute in customAttributes)
                {
                    if (!attribute.Validate(validation, propertyInfo, expressionType, propertyInfo.GetIndexParameters()))
                    {
                        flag3 = false;
                    }
                }
                stack.Pop();
                if (!flag3)
                {
                    return(null);
                }
            }
            return(info);
        }