示例#1
0
        public override object Convert(object value)
        {
            if (value == null)
            {
                return(value);
            }
            string input = value.ToString();

            Tracer.TraceInformation("adddays {0}", AddDays);
            DateTime dateValue;

            if (DateTime.TryParse(input, out dateValue))
            {
                if (!AddSeconds.Equals(0))
                {
                    dateValue = dateValue.AddSeconds(this.AddSeconds);
                    Tracer.TraceInformation("date-after-addseconds {0}", dateValue);
                }
                if (!AddMinutes.Equals(0))
                {
                    dateValue = dateValue.AddMinutes(this.AddMinutes);
                    Tracer.TraceInformation("date-after-addminutes {0}", dateValue);
                }
                if (!AddHours.Equals(0))
                {
                    dateValue = dateValue.AddHours(this.AddHours);
                    Tracer.TraceInformation("date-after-addhours {0}", dateValue);
                }
                if (!AddDays.Equals(0))
                {
                    dateValue = dateValue.AddDays(this.AddDays);
                    Tracer.TraceInformation("date-after-adddays {0}", dateValue);
                }
                if (!AddMonths.Equals(0))
                {
                    dateValue = dateValue.AddMonths(this.AddMonths);
                    Tracer.TraceInformation("date-after-addmonths {0}", dateValue);
                }
                if (!AddYears.Equals(0))
                {
                    dateValue = dateValue.AddYears(this.AddYears);
                    Tracer.TraceInformation("date-after-addyears {0}", dateValue);
                }
                return(dateValue);
            }
            else
            {
                Tracer.TraceWarning("could-not-parse-to-date {0}", 1, input);
            }
            return(value);
        }
示例#2
0
        public Expression GetNode(ExpressionParser parser)
        {
            Lexem      lex   = parser.Collection.CurrentLexem();
            Expression ex    = null;
            bool       uniar = parser.waitValue;

            if (lex.LexemType == LexType.Arfimetic)
            {
                switch (lex.LexemText)
                {
                case "+":
                    if (uniar)
                    {
                        ex = new UniarPlus_BoolExpr();
                    }
                    else
                    {
                        ex = new Plus_Arifmetic();
                    }
                    break;

                case "-":
                    if (uniar)
                    {
                        ex = new UniarMinus_BoolExpr();
                    }
                    else
                    {
                        ex = new Minus_Arifmetic();
                    }
                    break;

                case "*":
                    if (uniar)
                    {
                        ex = new AllColumnExpr();
                    }
                    else
                    {
                        ex = new Multi_Arifmetic();
                    }
                    break;

                case "/":
                    ex = new Div_Arifmetic();
                    break;

                case "<":
                    ex = new Less_CompExpr();
                    break;

                case "<=":
                    ex = new LessOrEqual_CompExpr();
                    break;

                case ">=":
                    ex = new GreatOrEqual_CompExpr();
                    break;

                case ">":
                    ex = new Great_CompExpr();
                    break;

                case "=":
                    ex = new Equal_CompExpr();
                    break;

                case "<>":
                case "!=":
                    ex = new NotEqual_CompExpr();
                    break;
                }
            }
            if (lex.LexemType == LexType.Number)
            {
                ex = new ConstExpr();
                if (lex.LexemText.Contains('.'))
                {
                    (ex as ConstExpr).Init(lex.LexemText.ParseDouble(), SimpleTypes.Float);
                }
                else
                {
                    (ex as ConstExpr).Init(long.Parse(lex.LexemText), SimpleTypes.Integer);
                }
            }
            if (lex.LexemType == LexType.Text)
            {
                if (lex.LexemText.StartsWith("'"))
                {
                    ex = new ConstExpr();
                    (ex as ConstExpr).Init(ParserUtils.StandartDecodeEscape(lex.LexemText), SimpleTypes.String);
                }
            }
            Lexem n1;

            if (lex.LexemType == LexType.Command)
            {
                switch (lex.LexemText.ToLower())
                {
                case "not":
                    n1 = parser.Collection.GetNext();
                    if (n1 != null && n1.LexemType == LexType.Command && n1.LexemText.ToLower() == "in")
                    {
                        ex = new NotInExpr();
                        parser.Collection.GotoNext();
                        break;
                    }
                    ex = new Not_BoolExpr();
                    break;

                case "case":
                    ex = new CaseExpr();
                    break;

                case "contains":
                    ex = new Contains();
                    break;

                case "containsic":     //ic = ignore case
                case "containscase":
                    ex = new ContainsIgnoreCase();
                    break;

                case "startwith":
                case "startswith":
                    ex = new StartsWith();
                    break;

                case "endwith":
                case "endswith":
                    ex = new EndsWith();
                    break;
                }
                if (parser.Collection.GetNext() != null && parser.Collection.GetNext().IsSkobraOpen())
                {
                    switch (lex.LexemText.ToLower())
                    {
                    case "cast":
                        ex = new Cast();
                        break;

                    case "in":
                        ex = new InExpr();
                        break;

                    case "abs":
                        ex = new Abs();
                        break;

                    case "substring":
                        ex = new SubString();
                        break;

                    case "position":
                        ex = new Position();
                        break;

                    case "ltrim":
                        ex = new LTrim();
                        break;

                    case "rtrim":
                        ex = new RTrim();
                        break;

                    case "trim":
                        ex = new Trim();
                        break;

                    case "length":
                        ex = new Length();
                        break;

                    case "upper":
                        ex = new Upper_operation();
                        break;

                    case "lower":
                        ex = new Lower_operation();
                        break;

                    case "left":
                        ex = new Left();
                        break;

                    case "right":
                        ex = new Right();
                        break;

                    case "replace":
                        ex = new Replace();
                        break;

                    case "now":
                        ex = new Now();
                        break;

                    case "tostr":
                        ex = new ToString();
                        break;

                    case "strtotime":
                        ex = new StrToTime();
                        break;

                    case "strtodatetime":
                        ex = new StrToDateTime();
                        break;

                    case "addseconds":
                        ex = new AddSeconds();
                        break;

                    case "addminutes":
                        ex = new AddMinutes();
                        break;

                    case "addhours":
                        ex = new AddHours();
                        break;

                    case "adddays":
                        ex = new AddDays();
                        break;

                    case "day":
                        ex = new Day();
                        break;

                    case "month":
                        ex = new Month();
                        break;

                    case "year":
                        ex = new Year();
                        break;

                    case "round":
                        ex = new ParserCore.Expr.Extend.Math.Round();
                        break;

                    case "ceiling":
                        ex = new ParserCore.Expr.Extend.Math.Ceiling();
                        break;

                    case "floor":
                        ex = new ParserCore.Expr.Extend.Math.Floor();
                        break;

                    case "pi":
                        ex = new ParserCore.Expr.Extend.Math.Pi();
                        break;

                    case "tan":
                        ex = new ParserCore.Expr.Extend.Math.Tan();
                        break;

                    case "log":
                        ex = new ParserCore.Expr.Extend.Math.Log();
                        break;
                    }
                }
            }
            return(ex);
        }