RSGC-Enum-part 3

 

 

name	Enum
nuget	https://www.nuget.org/packages/AOPMethodsCommon/ https://www.nuget.org/packages/AOPMethodsGenerator/
link	http://msprogrammer.serviciipeweb.ro/category/roslyn/
author	Andrei Ignat

This will generate code to fast parsing a int or a string to an enum
 

The code that you start with is

    [AutoEnum(template = EnumMethod.GenerateExtensionCode)]

    public enum MathematicalOperation

    {

    None=0,

    Add=1,

    Multiplication=2

    }

The code that you will use is

    var fromInt = enumMathematicalOperation.ParseExactMathematicalOperation(1);

    var fromString = enumMathematicalOperation.ParseExactMathematicalOperation("add");

    Console.WriteLine(fromInt + "-"+fromString);

 

The code that is generated is

      [GeneratedCode("AOPMethods", "")] 

      [CompilerGenerated]

      public  static partial class enumMathematicalOperation{ 

       /*

        public static int idMathematicalOperation(){

        System.Diagnostics.Debugger.Break();

        return 1;

        }

        */

        public static RSCG_Enum.MathematicalOperation ParseExactMathematicalOperation(this long value, RSCG_Enum.MathematicalOperation? defaultValue = null){

                if(0 == value)

                    return RSCG_Enum.MathematicalOperation.None;

                        if(1 == value)

                    return RSCG_Enum.MathematicalOperation.Add;

                        if(2 == value)

                    return RSCG_Enum.MathematicalOperation.Multiplication;

            

            if(defaultValue != null)

                return defaultValue.Value;

    

            throw new ArgumentException("cannot find " + value +" for RSCG_Enum.MathematicalOperation  ");

        }

       

        public static RSCG_Enum.MathematicalOperation ParseExactMathematicalOperation(this string value, RSCG_Enum.MathematicalOperation? defaultValue = null){

            //trying to see if it is a value inside

            //if(!string.IsNullOrWhiteSpace)

            if(long.TryParse(value, out long valueParsed)){

                return ParseExactMathematicalOperation(valueParsed);

            }

    

                if(0==string.Compare("None" , value, StringComparison.InvariantCultureIgnoreCase))

                    return RSCG_Enum.MathematicalOperation.None;

                        if(0==string.Compare("Add" , value, StringComparison.InvariantCultureIgnoreCase))

                    return RSCG_Enum.MathematicalOperation.Add;

                        if(0==string.Compare("Multiplication" , value, StringComparison.InvariantCultureIgnoreCase))

                    return RSCG_Enum.MathematicalOperation.Multiplication;

            

    

            if(defaultValue != null)

                return defaultValue.Value

            throw new ArgumentException("cannot find " + value +" for RSCG_Enum.MathematicalOperation  ");

        }

        /*

        

        */

        

      }

Example Code: https://github.com/ignatandrei/RSCG_Examples/tree/main/Enum

All RSCG

Nr	Blog Post
1	RSCG–part 1
2	RSCG- AppVersion–part 2
3	http://msprogrammer.serviciipeweb.ro/2021/02/17/rsgc-enum-part-3/
4	RSGC-JSON to Class- part 4
5	RSGC-Constructor – Deconstructor – part 5
6	RSGC – DTO Mapper – part 6
7	RSGC – Skinny Controllers- part 7
8	RSGC-Builder Design Pattern – part 8
9	RSGC- MetadataFromObject – part 9
10	RSGC- Dynamic Mock – part 10
11	RSCG- Method Decorator – part 11
12	RSCG – Curry – Partial function – part 12
13	RSCG- part 13 – IFormattable
14	RSCG- part 14 – DP_Decorator
15	RSCG- part 15 – Expression Generator
16	RSCG- part 16 – Many Others
17	RSCG- the book
18	RSCG–Template Rendering- part 17
19	CI Version
20	HttpClientGenerator
21	Query from database
22	AutoRegister
23	TinyTypes
24	Static2Interface
25	AppSettings
26	Properties
27

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