feature: add the ability to run a already generated source generator

Author: glennawatson

src/ReactiveMarbles.SourceGenerator.TestNuGetHelper/Compilation/SourceGeneratorUtility.cs

@@ -125,6 +125,73 @@ public T RunGenerator<T>(EventBuilderCompiler compiler, out ImmutableArray<Diagn
             return generator;
         }
 
+        /// <summary>
+        /// Runs the generator.
+        /// </summary>
+        /// <param name="compiler">The compiler.</param>
+        /// <param name="generator">The source generator instance.</param>
+        /// <param name="compilationDiagnostics">The diagnostics which are produced from the compiler.</param>
+        /// <param name="generatorDiagnostics">The diagnostics which are produced from the generator.</param>
+        /// <param name="generatorDriver">Output value for the driver.</param>
+        /// <param name="sources">The source code files.</param>
+        /// <returns>The returned source generator instance.</returns>
+        public ISourceGenerator RunGeneratorInstance(EventBuilderCompiler compiler, ISourceGenerator generator, out ImmutableArray<Diagnostic> compilationDiagnostics, out ImmutableArray<Diagnostic> generatorDiagnostics, out GeneratorDriver generatorDriver, params string[] sources) =>
+            RunGeneratorInstance(compiler, generator, out compilationDiagnostics, out generatorDiagnostics, out generatorDriver, out _, out _, sources);
+
+        /// <summary>
+        /// Runs the generator.
+        /// </summary>
+        /// <param name="compiler">The compiler.</param>
+        /// <param name="generator">The source generator instance.</param>
+        /// <param name="compilationDiagnostics">The diagnostics which are produced from the compiler.</param>
+        /// <param name="generatorDiagnostics">The diagnostics which are produced from the generator.</param>
+        /// <param name="generatorDriver">Output value for the driver.</param>
+        /// <param name="sources">The source code files.</param>
+        /// <returns>The returned source generator instance.</returns>
+        public ISourceGenerator RunGeneratorInstance(EventBuilderCompiler compiler, ISourceGenerator generator, out ImmutableArray<Diagnostic> compilationDiagnostics, out ImmutableArray<Diagnostic> generatorDiagnostics, out GeneratorDriver generatorDriver, params (string FileName, string Source)[] sources) =>
+            RunGeneratorInstance(compiler, generator, out compilationDiagnostics, out generatorDiagnostics, out generatorDriver, out _, out _, sources);
+
+        /// <summary>
+        /// Runs the generator.
+        /// </summary>
+        /// <param name="compiler">The compiler.</param>
+        /// <param name="generator">The source generator instance.</param>
+        /// <param name="compilationDiagnostics">The diagnostics which are produced from the compiler.</param>
+        /// <param name="generatorDiagnostics">The diagnostics which are produced from the generator.</param>
+        /// <param name="generatorDriver">Output value for the driver.</param>
+        /// <param name="beforeCompilation">The compilation before the generator has run.</param>
+        /// <param name="afterGeneratorCompilation">The compilation after the generator has run.</param>
+        /// <param name="sources">The source code files.</param>
+        /// <returns>The returned source generator instance.</returns>
+        public ISourceGenerator RunGeneratorInstance(EventBuilderCompiler compiler, ISourceGenerator generator, out ImmutableArray<Diagnostic> compilationDiagnostics, out ImmutableArray<Diagnostic> generatorDiagnostics, out GeneratorDriver generatorDriver, out Microsoft.CodeAnalysis.Compilation beforeCompilation, out Microsoft.CodeAnalysis.Compilation afterGeneratorCompilation, params string[] sources) =>
+            RunGeneratorInstance(compiler, generator, out compilationDiagnostics, out generatorDiagnostics, out generatorDriver, out beforeCompilation, out afterGeneratorCompilation, sources.Select(x => (FileName: "Unknown File", Source: x)).ToArray());
+
+        /// <summary>
+        /// Runs the generator.
+        /// </summary>
+        /// <param name="compiler">The compiler.</param>
+        /// <param name="generator">The source generator instance.</param>
+        /// <param name="compilationDiagnostics">The diagnostics which are produced from the compiler.</param>
+        /// <param name="generatorDiagnostics">The diagnostics which are produced from the generator.</param>
+        /// <param name="generatorDriver">Output value for the driver.</param>
+        /// <param name="beforeCompilation">The compilation before the generator has run.</param>
+        /// <param name="afterGeneratorCompilation">The compilation after the generator has run.</param>
+        /// <param name="sources">The source code files.</param>
+        /// <returns>The returned source generator instance.</returns>
+        public ISourceGenerator RunGeneratorInstance(EventBuilderCompiler compiler, ISourceGenerator generator, out ImmutableArray<Diagnostic> compilationDiagnostics, out ImmutableArray<Diagnostic> generatorDiagnostics, out GeneratorDriver generatorDriver, out Microsoft.CodeAnalysis.Compilation beforeCompilation, out Microsoft.CodeAnalysis.Compilation afterGeneratorCompilation, params (string FileName, string Source)[] sources)
+        {
+            beforeCompilation = CreateCompilation(compiler, sources);
+
+            afterGeneratorCompilation = RunGenerators(beforeCompilation, out generatorDiagnostics, out generatorDriver, generator);
+
+            compilationDiagnostics = afterGeneratorCompilation.GetDiagnostics();
+
+            ShouldHaveNoCompilerDiagnosticsWarningOrAbove(_writeOutput, afterGeneratorCompilation, compilationDiagnostics);
+            ShouldHaveNoCompilerDiagnosticsWarningOrAbove(_writeOutput, beforeCompilation, generatorDiagnostics);
+
+            return generator;
+        }
+
         /// <summary>
         /// Runs the generator.
         /// </summary>

version.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.2",
+  "version": "1.3",
   "publicReleaseRefSpec": [
     "^refs/heads/master$",
     "^refs/heads/main$"