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C#: Add source generator for signals as events

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Changed the signal declaration signal to:

```
// The following generates a MySignal event
[Signal] public delegate void MySignalEventHandler(int param);
```
This commit is contained in:
Ignacio Roldán Etcheverry
2022-07-28 17:41:47 +02:00
parent f033764ffe
commit 97713ff77a
31 changed files with 997 additions and 523 deletions
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49
modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs
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@ -166,5 +166,54 @@ namespace Godot.SourceGenerators
location,
location?.SourceTree?.FilePath));
}
public static void ReportSignalDelegateMissingSuffix(
GeneratorExecutionContext context,
INamedTypeSymbol delegateSymbol)
{
var locations = delegateSymbol.Locations;
var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
string message = "The name of the delegate must end with 'EventHandler': " +
delegateSymbol.ToDisplayString() +
$". Did you mean '{delegateSymbol.Name}EventHandler'?";
string description = $"{message}. Rename the delegate accordingly or remove the '[Signal]' attribute.";
context.ReportDiagnostic(Diagnostic.Create(
new DiagnosticDescriptor(id: "GODOT-G0201",
title: message,
messageFormat: message,
category: "Usage",
DiagnosticSeverity.Error,
isEnabledByDefault: true,
description),
location,
location?.SourceTree?.FilePath));
}
public static void ReportSignalDelegateSignatureNotSupported(
GeneratorExecutionContext context,
INamedTypeSymbol delegateSymbol)
{
var locations = delegateSymbol.Locations;
var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
string message = "The delegate signature of the signal " +
$"is not supported: '{delegateSymbol.ToDisplayString()}'";
string description = $"{message}. Use supported types only or remove the '[Signal]' attribute.";
context.ReportDiagnostic(Diagnostic.Create(
new DiagnosticDescriptor(id: "GODOT-G0202",
title: message,
messageFormat: message,
category: "Usage",
DiagnosticSeverity.Error,
isEnabledByDefault: true,
description),
location,
location?.SourceTree?.FilePath));
}
}
}