Prevent worker builds with compiler errors in Unity Editor (#1425)

* Add CHANGELOG entry

* Disable MenuBuild with editor compile errors

* Fix codegen for Unity worker menu build

* Generate one validation function for menu build

Author: Sean Parker

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - Added support for multiple annotations in Code Writer API. [#1427](https://github.com/spatialos/gdk-for-unity/pull/1427)
+- Prevent building workers with Unity Editor compile errors. [#1425](https://github.com/spatialos/gdk-for-unity/pull/1425)
 
 ## `0.3.8` - 2020-07-20
 

workers/unity/Packages/io.improbable.gdk.buildsystem/.codegen/Source/Generators/BuildSystem/UnityWorkerMenuGenerator.cs

@@ -34,6 +34,9 @@ public static CodeWriter Generate(List<string> workerTypes)
                             return workerTypes.Select(workerType => $@"""{workerType}""");
                         });
 
+                        var allMenuOptionValidators = buildWorkerMenu.Annotate($@"MenuItem(EditorConfig.ParentMenu + ""/"" + LocalMenu + ""/All workers"", true, EditorConfig.MenuOffset + {workerTypes.Count})")
+                            .Annotate($@"MenuItem(EditorConfig.ParentMenu + ""/"" + CloudMenu + ""/All workers"", true, EditorConfig.MenuOffset + {workerTypes.Count})");
+
                         for (var i = 0; i < workerTypes.Count; i++)
                         {
                             var workerType = workerTypes[i];
@@ -50,8 +53,16 @@ public static CodeWriter Generate(List<string> workerTypes)
                                 {
                                     $@"MenuBuildCloud(new[] {{ {workerTypeString} }});"
                                 });
+
+                            allMenuOptionValidators.Annotate($@"MenuItem(EditorConfig.ParentMenu + ""/"" + LocalMenu + ""/{workerType}"", true, EditorConfig.MenuOffset + {i})")
+                                .Annotate($@"MenuItem(EditorConfig.ParentMenu + ""/"" + CloudMenu + ""/{workerType}"", true, EditorConfig.MenuOffset + {i})");
                         }
 
+                        allMenuOptionValidators.Method("public static bool ValidateEditorCompile()", () => new[]
+                            {
+                                "return !EditorUtility.scriptCompilationFailed;"
+                            });
+
                         buildWorkerMenu.Annotate($@"MenuItem(EditorConfig.ParentMenu + ""/"" + LocalMenu + ""/All workers"", false, EditorConfig.MenuOffset + {workerTypes.Count})")
                             .Method("public static void BuildLocalAll()", () => new[]
                             {

workers/unity/Packages/io.improbable.gdk.buildsystem/WorkerBuilder.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
 using Improbable.Gdk.BuildSystem.Configuration;
 using Improbable.Gdk.Core;
 using Improbable.Gdk.Tools;