Esempio n. 1
0
        public override ExprNode Validate(ExprValidationContext validationContext)
        {
            if (ChildNodes.Count == 0 || ChildNodes.Count > 2)
            {
                throw new ExprValidationException("Cast function node must have one or two child expressions");
            }

            var valueEvaluator = ChildNodes[0].ExprEvaluator;
            var fromType       = valueEvaluator.ReturnType;

            // determine date format parameter
            var namedParams =
                ExprNodeUtility.GetNamedExpressionsHandleDups(ChildNodes);

            ExprNodeUtility.ValidateNamed(namedParams, new string[] { "dateformat" });
            var dateFormatParameter = namedParams.Get("dateformat");

            if (dateFormatParameter != null)
            {
                ExprNodeUtility.ValidateNamedExpectType(
                    dateFormatParameter, new Type[] { typeof(string) });
            }

            // identify target type
            // try the primitive names including "string"
            _targetType = TypeHelper.GetPrimitiveTypeForName(_classIdentifier.Trim()).GetBoxedType();

            SimpleTypeCaster     caster;
            bool                 numeric;
            CasterParserComputer casterParserComputer = null;

            var classIdentifierInvariant = _classIdentifier.Trim().ToLowerInvariant();

            if (dateFormatParameter != null)
            {
                if (fromType != typeof(string))
                {
                    throw new ExprValidationException(
                              string.Format("Use of the '{0}' named parameter requires a string-type input", dateFormatParameter.ParameterName));
                }

                if (_targetType == null)
                {
                    try
                    {
                        _targetType = TypeHelper.GetClassForName(
                            _classIdentifier.Trim(), validationContext.EngineImportService.GetClassForNameProvider());
                    }
                    catch (TypeLoadException)
                    {
                        // expected
                    }
                }

                // dynamic or static date format
                numeric = false;
                caster  = null;


                StringToDateTimeBaseComputer dateTimeComputer;

                if (_targetType == typeof(DateTime) ||
                    _targetType == typeof(DateTime?) ||
                    classIdentifierInvariant.Equals("date"))
                {
                    _targetType = typeof(DateTime);

                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.StaticDateFormat != null)
                    {
                        if (desc.Iso8601Format)
                        {
                            dateTimeComputer = new StringToDateTimeWStaticISOFormatComputer(validationContext.EngineImportService.TimeZone);
                            dateTimeComputer.HandleParseException += HandleParseISOException;
                        }
                        else
                        {
                            dateTimeComputer = new StringToDateTimeWStaticFormatComputer(desc.StaticDateFormat);
                            dateTimeComputer.HandleParseException += HandleParseException;
                        }
                    }
                    else
                    {
                        dateTimeComputer = new StringToDateTimeWDynamicFormatComputer(desc.DynamicDateFormat);
                        dateTimeComputer.HandleParseException += HandleParseException;
                    }
                }
                else if (_targetType == typeof(DateTimeOffset) ||
                         _targetType == typeof(DateTimeOffset?) ||
                         classIdentifierInvariant.Equals("dto") ||
                         classIdentifierInvariant.Equals("datetimeoffset"))
                {
                    _targetType = typeof(DateTimeOffset);

                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.StaticDateFormat != null)
                    {
                        if (desc.Iso8601Format)
                        {
                            dateTimeComputer = new StringToDtoWStaticISOFormatComputer(validationContext.EngineImportService.TimeZone);
                            dateTimeComputer.HandleParseException += HandleParseISOException;
                        }
                        else
                        {
                            dateTimeComputer = new StringToDtoWStaticFormatComputer(desc.StaticDateFormat, validationContext.EngineImportService.TimeZone);
                            dateTimeComputer.HandleParseException += HandleParseException;
                        }
                    }
                    else
                    {
                        dateTimeComputer = new StringToDtoWDynamicFormatComputer(desc.DynamicDateFormat, validationContext.EngineImportService.TimeZone);
                        dateTimeComputer.HandleParseException += HandleParseException;
                    }
                }
                else if (_targetType == typeof(DateTimeEx) ||
                         classIdentifierInvariant.Equals("dtx") ||
                         classIdentifierInvariant.Equals("datetimeex") ||
                         classIdentifierInvariant.Equals("calendar"))
                {
                    _targetType = typeof(DateTimeEx);

                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.StaticDateFormat != null)
                    {
                        if (desc.Iso8601Format)
                        {
                            dateTimeComputer = new StringToDtxWStaticISOFormatComputer(validationContext.EngineImportService.TimeZone);
                            dateTimeComputer.HandleParseException += HandleParseISOException;
                        }
                        else
                        {
                            dateTimeComputer = new StringToDtxWStaticFormatComputer(desc.StaticDateFormat, validationContext.EngineImportService.TimeZone);
                            dateTimeComputer.HandleParseException += HandleParseException;
                        }
                    }
                    else
                    {
                        dateTimeComputer = new StringToDtxWDynamicFormatComputer(desc.DynamicDateFormat, validationContext.EngineImportService.TimeZone);
                        dateTimeComputer.HandleParseException += HandleParseException;
                    }
                }
                else if (_targetType == typeof(long) || _targetType == typeof(long?))
                {
                    _targetType = typeof(long);

                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.StaticDateFormat != null)
                    {
                        if (desc.Iso8601Format)
                        {
                            dateTimeComputer = new StringToDateTimeLongWStaticISOFormatComputer(validationContext.EngineImportService.TimeZone);
                            dateTimeComputer.HandleParseException += HandleParseISOException;
                        }
                        else
                        {
                            dateTimeComputer = new StringToDateTimeLongWStaticFormatComputer(desc.StaticDateFormat);
                            dateTimeComputer.HandleParseException += HandleParseException;
                        }
                    }
                    else
                    {
                        dateTimeComputer = new StringToDateTimeLongWDynamicFormatComputer(desc.DynamicDateFormat);
                        dateTimeComputer.HandleParseException += HandleParseException;
                    }
                }
                else
                {
                    throw new ExprValidationException(
                              "Use of the '" + dateFormatParameter.ParameterName +
                              "' named parameter requires a target type of long or datetime");
                }

                casterParserComputer = dateTimeComputer;
            }
            else if (_targetType != null)
            {
                _targetType = _targetType.GetBoxedType();
                caster      = SimpleTypeCasterFactory.GetCaster(fromType, _targetType);
                numeric     = _targetType.IsNumeric();
            }
            else if (String.Equals(classIdentifierInvariant, "bigint", StringComparison.InvariantCultureIgnoreCase) ||
                     String.Equals(classIdentifierInvariant, "biginteger", StringComparison.InvariantCultureIgnoreCase))
            {
                _targetType = typeof(BigInteger);
                caster      = SimpleTypeCasterFactory.GetCaster(fromType, _targetType);
                numeric     = true;
            }
            else if (classIdentifierInvariant.Equals("decimal".ToLowerInvariant()))
            {
                _targetType = typeof(decimal);
                caster      = SimpleTypeCasterFactory.GetCaster(fromType, _targetType);
                numeric     = true;
            }
            else
            {
                try
                {
                    _targetType = TypeHelper.GetClassForName(
                        _classIdentifier.Trim(), validationContext.EngineImportService.GetClassForNameProvider());
                }
                catch (TypeLoadException e)
                {
                    throw new ExprValidationException(
                              "Type as listed in cast function by name '" + _classIdentifier + "' cannot be loaded", e);
                }
                numeric = _targetType.IsNumeric();
                caster  = numeric
                    ? SimpleTypeCasterFactory.GetCaster(fromType, _targetType)
                    : SimpleTypeCasterFactory.GetCaster(_targetType);
            }

            // assign a computer unless already assigned
            if (casterParserComputer == null)
            {
                // to-string
                if (_targetType == typeof(string))
                {
                    casterParserComputer = new StringXFormComputer();
                }
                else if (fromType == typeof(string))
                {
                    // parse
                    var parser = SimpleTypeParserFactory.GetParser(_targetType.GetBoxedType());
                    casterParserComputer = new StringParserComputer(parser);
                }
                else if (numeric)
                {
                    // numeric cast with check
                    casterParserComputer = new NumericCasterComputer(caster);
                }
                else
                {
                    // non-numeric cast
                    casterParserComputer = new NonnumericCasterComputer(caster);
                }
            }

            // determine constant or not
            Object theConstant = null;

            if (ChildNodes[0].IsConstantResult)
            {
                _isConstant = casterParserComputer.IsConstantForConstInput;
                if (_isConstant)
                {
                    var evaluateParams = new EvaluateParams(null, true, validationContext.ExprEvaluatorContext);
                    var @in            = valueEvaluator.Evaluate(evaluateParams);
                    theConstant = @in == null ? null : casterParserComputer.Compute(@in, evaluateParams);
                }
            }

            // determine evaluator
            if (_isConstant)
            {
                _exprEvaluator = new ExprCastNodeConstEval(this, theConstant);
            }
            else
            {
                _exprEvaluator = new ExprCastNodeNonConstEval(this, valueEvaluator, casterParserComputer);
            }
            return(null);
        }
Esempio n. 2
0
        public override ExprNode Validate(ExprValidationContext validationContext)
        {
            if (ChildNodes.Length == 0 || ChildNodes.Length > 2) {
                throw new ExprValidationException("Cast function node must have one or two child expressions");
            }

            var fromType = ChildNodes[0].Forge.EvaluationType;
            var classIdentifier = ClassIdentifierWArray.ClassIdentifier;
            var classIdentifierInvariant = classIdentifier.Trim();
            var arrayDimensions = ClassIdentifierWArray.ArrayDimensions;

            // Local function to match a class identifier
            bool MatchesClassIdentifier(string identifier)
            {
                return string.Equals(
                    classIdentifierInvariant,
                    identifier,
                    StringComparison.InvariantCultureIgnoreCase);
            }
            
            // determine date format parameter
            var namedParams =
                ExprNodeUtilityValidate.GetNamedExpressionsHandleDups(ChildNodes);
            ExprNodeUtilityValidate.ValidateNamed(namedParams, new[] {"dateformat"});
            var dateFormatParameter = namedParams.Get("dateformat");
            if (dateFormatParameter != null) {
                ExprNodeUtilityValidate.ValidateNamedExpectType(
                    dateFormatParameter,
                    new[] {
                        typeof(string), 
                        typeof(DateFormat), 
                        typeof(DateTimeFormat)
                    });
            }

            // identify target type
            // try the primitive names including "string"
            SimpleTypeCaster caster;
            var targetType = TypeHelper.GetPrimitiveTypeForName(classIdentifier.Trim());
            if (!ClassIdentifierWArray.IsArrayOfPrimitive) {
                targetType = targetType.GetBoxedType();
            }

            targetType = ApplyDimensions(targetType);

            bool numeric;
            CasterParserComputerForge casterParserComputerForge = null;
            if (dateFormatParameter != null) {
                if (fromType != typeof(string)) {
                    throw new ExprValidationException(
                        "Use of the '" +
                        dateFormatParameter.ParameterName +
                        "' named parameter requires a string-type input");
                }

                if (targetType == null) {
                    try {
                        targetType = TypeHelper.GetClassForName(
                            classIdentifier.Trim(),
                            validationContext.ImportService.ClassForNameProvider);
                        targetType = ApplyDimensions(targetType);
                    }
                    catch (TypeLoadException) {
                        // expected
                    }
                }

                // dynamic or static date format
                numeric = false;
                caster = null;

                if (targetType == typeof(DateTimeEx) ||
                    MatchesClassIdentifier("calendar") ||
                    MatchesClassIdentifier("dateTimeEx")) {
                    targetType = typeof(DateTimeEx);

                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.IsIso8601Format) {
                        casterParserComputerForge = new StringToDateTimeExIsoFormatComputer();
                    }
                    else if (desc.StaticDateFormat != null) {
                        casterParserComputerForge = new StringToDateTimExWStaticFormatComputer(
                            desc.StaticDateFormat,
                            TimeZoneInfo.Utc); // Note how code-generation does not use the default time zone
                    }
                    else {
                        casterParserComputerForge = new StringToDateTimeExWExprFormatComputer(
                            desc.DynamicDateFormat,
                            TimeZoneInfo.Utc);
                    }
                }
                else if (targetType == typeof(DateTimeOffset) ||
                         targetType == typeof(DateTimeOffset?) ||
                         MatchesClassIdentifier("dto") ||
                         MatchesClassIdentifier("datetimeoffset")) {
                    targetType = typeof(DateTimeOffset);
                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.IsIso8601Format) {
                        casterParserComputerForge = new StringToDateTimeOffsetIsoFormatComputer();
                    }
                    else if (desc.StaticDateFormat != null) {
                        casterParserComputerForge =
                            new StringToDateTimeOffsetWStaticFormatComputer(desc.StaticDateFormat);
                    }
                    else {
                        casterParserComputerForge =
                            new StringToDateTimeOffsetWExprFormatComputerForge(desc.DynamicDateFormat);
                    }
                }
                else if (targetType == typeof(DateTime) ||
                         targetType == typeof(DateTime?) ||
                         MatchesClassIdentifier("datetime")) {
                    targetType = typeof(DateTime);
                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.IsIso8601Format) {
                        casterParserComputerForge = new StringToDateTimeIsoFormatComputer();
                    }
                    else if (desc.StaticDateFormat != null) {
                        casterParserComputerForge =
                            new StringToDateTimeWStaticFormatComputer(desc.StaticDateFormat);
                    }
                    else {
                        casterParserComputerForge =
                            new StringToDateTimeWExprFormatComputerForge(desc.DynamicDateFormat);
                    }
                }
                else if (targetType == typeof(long) || targetType == typeof(long?)) {
                    targetType = typeof(long);
                    var desc = ValidateDateFormat(dateFormatParameter, validationContext);
                    if (desc.IsIso8601Format) {
                        casterParserComputerForge = new StringToLongWStaticISOFormatComputer();
                    }
                    else if (desc.StaticDateFormat != null) {
                        casterParserComputerForge = new StringToLongWStaticFormatComputer(desc.StaticDateFormat);
                    }
                    else {
                        casterParserComputerForge = new StringToLongWExprFormatComputerForge(desc.DynamicDateFormat);
                    }
                }
                else {
                    throw new ExprValidationException(
                        "Use of the '" +
                        dateFormatParameter.ParameterName +
                        "' named parameter requires a target type of long, DateTime, DateTimeOffset or DateEx");
                }
            }
            else if (targetType != null) {
                targetType = targetType.GetBoxedType();
                caster = SimpleTypeCasterFactory.GetCaster(fromType, targetType);
                numeric = caster.IsNumericCast;
            }
            else if (MatchesClassIdentifier("bigint") || MatchesClassIdentifier("biginteger")) {
                targetType = typeof(BigInteger);
                targetType = ApplyDimensions(targetType);
                caster = SimpleTypeCasterFactory.GetCaster(fromType, targetType);
                numeric = true;
            }
            else if (MatchesClassIdentifier("decimal")) {
                targetType = typeof(decimal);
                targetType = ApplyDimensions(targetType);
                caster = SimpleTypeCasterFactory.GetCaster(fromType, targetType);
                numeric = true;
            }
            else {
                try {
                    targetType = TypeHelper.GetClassForName(
                        classIdentifier.Trim(),
                        validationContext.ImportService.ClassForNameProvider);
                }
                catch (TypeLoadException e) {
                    throw new ExprValidationException(
                        "Class as listed in cast function by name '" + classIdentifier + "' cannot be loaded",
                        e);
                }

                targetType = ApplyDimensions(targetType);
                numeric = targetType.IsNumeric();
                if (numeric) {
                    caster = SimpleTypeCasterFactory.GetCaster(fromType, targetType);
                }
                else {
                    caster = new SimpleTypeCasterAnyType(targetType);
                }
            }

            // assign a computer unless already assigned
            if (casterParserComputerForge == null) {
                // to-string
                if (targetType == typeof(string)) {
                    casterParserComputerForge = new StringXFormComputer();
                }
                else if (fromType == typeof(string) && targetType != typeof(char)) {
                    // parse
                    SimpleTypeParserSPI parser = SimpleTypeParserFactory.GetParser(targetType.GetBoxedType());
                    casterParserComputerForge = new StringParserComputer(parser);
                }
                else if (numeric) {
                    // numeric cast with check
                    casterParserComputerForge = new NumberCasterComputer(caster);
                }
                else {
                    // non-numeric cast
                    casterParserComputerForge = new NonnumericCasterComputer(caster);
                }
            }

            // determine constant or not
            object theConstant = null;
            var isConstant = false;
            if (ChildNodes[0].Forge.ForgeConstantType.IsCompileTimeConstant) {
                isConstant = casterParserComputerForge.IsConstantForConstInput;
                if (isConstant) {
                    var @in = ChildNodes[0].Forge.ExprEvaluator.Evaluate(null, true, null);
                    theConstant = @in == null
                        ? null
                        : casterParserComputerForge.EvaluatorComputer.Compute(@in, null, true, null);
                }
            }
            
            forge = new ExprCastNodeForge(this, casterParserComputerForge, targetType, isConstant, theConstant);
            return null;
        }