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https://github.com/jwshyns/DudNet
Proxy-pattern source generator
https://github.com/jwshyns/DudNet
Last synced: about 1 month ago
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Proxy-pattern source generator
- Host: GitHub
- URL: https://github.com/jwshyns/DudNet
- Owner: jwshyns
- Created: 2023-08-21T00:10:07.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2023-10-24T03:18:18.000Z (about 1 year ago)
- Last Synced: 2024-05-12T12:41:52.832Z (7 months ago)
- Language: C#
- Size: 43 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- RSCG_Examples - https://github.com/jwshyns/DudNet
- csharp-source-generators - DudNet -   A C# source generator for implementing a proxy pattern. (Source Generators / Patterns)
README
# DudNet [](https://www.nuget.org/packages/Jwshyns.DudNet)
DudNet is a C# source generator for implementing a proxy pattern.
## Example
Generating a proxy for a class is as simple as marking it with the `ProxyServiceAttribute` as follows:
```csharp
using DudNet.Attributes;
public interface IExampleService {
public void ExampleFunction();
public int ExampleFunctionWithArgumentAndReturn(int number);
}
[ProxyService]
public class ExampleService : IExampleService {
public void ExampleFunction(){
// omitted for brevity
}
public int ExampleFunctionWithArgumentAndReturn(int number){
// omitted for brevity
}
public void FunctionNotOnInterface(){
// ommitted for brevity
}
}
```
Which would generate the following two classes:
```csharp
using System.Runtime.CompilerServices;
using DudNet.Attributes;
public partial class ExampleServiceProxy : IExampleService {
private readonly IExampleService _service;
public void ExampleFunction() {
Interceptor();
ExampleFunctionInterceptor();
_service.ExampleFunction();
}
public int ExampleFunctionWithArgumentAndReturn(int number) {
Interceptor();
ExampleFunctionWithArgumentAndReturnInterceptor(number);
_service.ExampleFunctionWithArgumentAndReturn(number);
}
partial void Interceptor([CallerMemberName]string callerName = null);
partial void ExampleFunctionInterceptor();
partial void ExampleFunctionWithArgumentAndReturnInterceptor(int number);
}
```
and
```csharp
using DudNet.Attributes;
public class ExampleServiceDud : IExampleService {
public void ExampleFunction() {
}
public int ExampleFunctionWithArgumentAndReturn(int number) {
}
}
```
These generated classes can be used by further implementing the `partial` proxy class as follows:
```csharp
public partial class ExampleServiceProxy : IExampleService {
public ExampleServiceProxy(ExampleProxyService service) {
// Some logic to determine whether you want to effectively "disable" the service
if (Random.Shared.NextDouble() > 0.5)
{
_service = service;
return;
}
_service = new ExampleServiceDud();
}
partial void Interceptor([CallerMemberName]string callerName = null) {
Console.Writeline("'{caller}' was called", callerName);
}
partial void ExampleFunctionWithArgumentAndReturnInterceptor(int number) {
if(number > 5)
{
throw new Exception("Received number value '{number}' - too high!", number);
}
}
}
```