internal static string Emit()

in sdk/Sdk.Generators/FunctionExecutor/FunctionExecutorGenerator.Emitter.cs [17:73]
53 lines of code
4 McCabe index (conditional complexity)

            internal static string Emit(GeneratorExecutionContext context, IEnumerable<ExecutableFunction> executableFunctions, bool includeAutoRegistrationCode)
            {
                var functions = executableFunctions.ToList();
                var defaultExecutorNeeded = functions.Any(f => f.Visibility == FunctionMethodVisibility.PublicButContainingTypeNotVisible);

                string result = $$"""
                         // <auto-generated/>
                         using System;
                         using System.Threading.Tasks;
                         using System.Collections.Generic;
                         using Microsoft.Extensions.Hosting;
                         using Microsoft.Extensions.DependencyInjection;
                         using Microsoft.Azure.Functions.Worker;
                         using Microsoft.Azure.Functions.Worker.Context.Features;
                         using Microsoft.Azure.Functions.Worker.Invocation;
                         namespace {{FunctionsUtil.GetNamespaceForGeneratedCode(context)}}
                         {
                             [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Never)]
                             {{Constants.GeneratedCodeAttribute}}
                             internal class DirectFunctionExecutor : global::Microsoft.Azure.Functions.Worker.Invocation.IFunctionExecutor
                             {
                                 private readonly global::Microsoft.Azure.Functions.Worker.IFunctionActivator _functionActivator;{{(defaultExecutorNeeded ? $"{Constants.NewLine}        private Lazy<global::Microsoft.Azure.Functions.Worker.Invocation.IFunctionExecutor> _defaultExecutor;" : string.Empty)}}
                                 {{GetTypesDictionary(functions)}}
                                 public DirectFunctionExecutor(global::Microsoft.Azure.Functions.Worker.IFunctionActivator functionActivator)
                                 {
                                     _functionActivator = functionActivator ?? throw new global::System.ArgumentNullException(nameof(functionActivator));
                                 }

                                 /// <inheritdoc/>
                                 public async global::System.Threading.Tasks.ValueTask ExecuteAsync(global::Microsoft.Azure.Functions.Worker.FunctionContext context)
                                 {
                                     {{GetMethodBody(functions, defaultExecutorNeeded)}}
                                 }{{(defaultExecutorNeeded ? $"{Constants.NewLine}{EmitCreateDefaultExecutorMethod(context)}" : string.Empty)}}
                             }

                             /// <summary>
                             /// Extension methods to enable registration of the custom <see cref="IFunctionExecutor"/> implementation generated for the current worker.
                             /// </summary>
                             {{Constants.GeneratedCodeAttribute}}
                             public static class FunctionExecutorHostBuilderExtensions
                             {
                                 ///<summary>
                                 /// Configures an optimized function executor to the invocation pipeline.
                                 ///</summary>
                                 public static IHostBuilder ConfigureGeneratedFunctionExecutor(this IHostBuilder builder)
                                 {
                                     return builder.ConfigureServices(s => 
                                     {
                                         s.AddSingleton<global::Microsoft.Azure.Functions.Worker.Invocation.IFunctionExecutor, DirectFunctionExecutor>();
                                     });
                                 }
                             }{{GetAutoConfigureStartupClass(includeAutoRegistrationCode)}}
                         }
                         """;

                return result;
            }