RSCG- part 14 – DP_Decorator

 

 

name AutoInterface
nuget

https://www.nuget.org/packages/BeaKona.AutoInterfaceGenerator

link https://github.com/beakona/AutoInterface
author beakona

Implement the Design Pattern Decorator. Based on template – you can modify the source code generated
 

The code that you start with is

?
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
public interface ICoffee                                                                                              
 
{
 
    public int Price { get; }
 
    public string Description { get; }
 
}
 
 
 
public class SimpleCoffee : ICoffee
 
{
 
    public SimpleCoffee()
 
    {
 
        Price = 3;
 
        Description = "Simple Coffee";
 
    }
 
    public int Price { get; set; }
 
    public string Description { get; set; }
 
 
 
public partial class MilkDecorator : ICoffee
 
{
 
    [BeaKona.AutoInterface(TemplateLanguage = "scriban", TemplateBody = SimpleCoffee.TemplateCoffeeDecorator)]
 
    private readonly ICoffee coffee;
 
 
 
    public int DecoratorPrice { get; set; } = 1;
 
    public MilkDecorator(ICoffee coffee)
 
    {
 
        this.coffee = coffee;
 
    }
 
 
 
 
 
 
 
}
 
 
 
public partial class ChocoDecorator : ICoffee
 
{
 
    [BeaKona.AutoInterface(TemplateLanguage = "scriban", TemplateBody = SimpleCoffee.TemplateCoffeeDecorator)]
 
    private readonly ICoffee coffee;
 
 
 
    public int DecoratorPrice { get; set; } = 2;
 
    public ChocoDecorator(ICoffee coffee)
 
    {
 
        this.coffee = coffee;
 
    }
 
 
 
 
 
}

The code that you will use is

?
01
02
03
04
05
06
07
08
09
10
11
SimpleCoffee s = new SimpleCoffee();
 
Console.WriteLine(s.Description +" with Price "+ s.Price);
 
ICoffee withMilk = new MilkDecorator(s);
 
Console.WriteLine(withMilk.Description} +" with Price "+ withMilk.Price);
 
ICoffee withMilkAndChoco = new ChocoDecorator(withMilk);
 
Console.WriteLine(withMilkAndChoco.Description +" with Price "+ withMilkAndChoco.Price);

 

The code that is generated is

?
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
partial class MilkDecorator                                                       
 
{
 
    int ICoffee.Price
 
    {
 
        get
 
        {
 
                return ((ICoffee)this.coffee).Price + DecoratorPrice;
 
        }
 
    }
 
 
 
    string ICoffee.Description
 
    {
 
        get
 
        {
                var name = this.GetType().Name.Replace("Decorator","");
 
                return ((ICoffee)this.coffee).Description + " with " + name;
 
        }
 
    }
 
}

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

All RSCG

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