42 lines
1.4 KiB
C#
42 lines
1.4 KiB
C#
using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp.Syntax;
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using System.Collections.Immutable;
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using System.Text;
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namespace GeneratorLib;
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[Generator(LanguageNames.CSharp)]
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public class HelloWorldGenerator : IIncrementalGenerator
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{
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public void Initialize(IncrementalGeneratorInitializationContext context)
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{
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var provider = context.SyntaxProvider.CreateSyntaxProvider(
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static (syntaxNode, _) => syntaxNode is ClassDeclarationSyntax,
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static (generatorSyntaxContext, _) => (ClassDeclarationSyntax)generatorSyntaxContext.Node)
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.Where(static node => node != null);
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var compilation = context.CompilationProvider.Combine(provider.Collect());
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context.RegisterSourceOutput(compilation, ExecuteHelloWorldGeneration);
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}
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private static void ExecuteHelloWorldGeneration(SourceProductionContext context, (Compilation compilation, ImmutableArray<ClassDeclarationSyntax> classDeclarationSyntax) compilationProvider)
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{
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const string hintName = "HelloWorld.g.cs";
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string sourceText = new StringBuilder()
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.AppendLine("namespace HelloNamespace")
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.AppendLine("{")
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.AppendLine("\tpublic class HelloWorld")
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.AppendLine("\t{")
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.AppendLine("\t\tpublic static void SayHello()")
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.AppendLine("\t\t{")
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.AppendLine("\t\t\tConsole.WriteLine(\"Hello, World!\");")
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.AppendLine("\t\t}")
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.AppendLine("\t}")
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.AppendLine("}")
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.ToString();
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context.AddSource(hintName, sourceText);
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}
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}
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