Reworked trait documentation generation

Switched the Utility's ExtractTraitDocsCommand output to JSON.
Updated documentation generation to use that and the new Python script to generate the Markdown file, same as the Weapon documentation.

.github/workflows/documentation.yml

@@ -91,7 +91,7 @@ jobs:
         env:
           GIT_TAG: ${{ github.event.inputs.tag }}
         run: |
-          ./utility.sh all --docs "${GIT_TAG}" > "docs/api/playtest/traits.md"
+          ./utility.sh all --docs "${GIT_TAG}" | python3 ./packaging/format-docs.py > "docs/api/playtest/traits.md"
           ./utility.sh all --weapon-docs "${GIT_TAG}" | python3 ./packaging/format-docs.py > "docs/api/playtest/weapons.md"
           ./utility.sh all --lua-docs "${GIT_TAG}" > "docs/api/playtest/lua.md"
 
@@ -100,7 +100,7 @@ jobs:
         env:
           GIT_TAG: ${{ github.event.inputs.tag }}
         run: |
-          ./utility.sh all --docs "${GIT_TAG}" > "docs/api/release/traits.md"
+          ./utility.sh all --docs "${GIT_TAG}" | python3 ./packaging/format-docs.py > "docs/api/release/traits.md"
           ./utility.sh all --weapon-docs "${GIT_TAG}" | python3 ./packaging/format-docs.py > "docs/api/release/weapons.md"
           ./utility.sh all --lua-docs "${GIT_TAG}" > "docs/api/release/lua.md"
 

OpenRA.Mods.Common/UtilityCommands/ExtractTraitDocsCommand.cs

@@ -10,8 +10,10 @@
 #endregion
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
-using System.Text;
+using Newtonsoft.Json;
+using OpenRA.Primitives;
 using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.UtilityCommands
@@ -25,7 +27,7 @@ namespace OpenRA.Mods.Common.UtilityCommands
 			return true;
 		}
 
-		[Desc("[VERSION]", "Generate trait documentation in MarkDown format.")]
+		[Desc("[VERSION]", "Generate trait documentation in JSON format.")]
 		void IUtilityCommand.Run(Utility utility, string[] args)
 		{
 			// HACK: The engine code assumes that Game.modData is set.
@@ -35,84 +37,72 @@ namespace OpenRA.Mods.Common.UtilityCommands
 			if (args.Length > 1)
 				version = args[1];
 
-			Console.WriteLine(
+			var objectCreator = utility.ModData.ObjectCreator;
-				"This documentation is aimed at modders. It displays all traits with default values and developer commentary. " +
+			var traitInfos = objectCreator.GetTypesImplementing<TraitInfo>().OrderBy(t => t.Namespace);
-				"Please do not edit it directly, but add new `[Desc(\"String\")]` tags to the source code. This file has been " +
-				$"automatically generated for version {version} of OpenRA.");
-			Console.WriteLine();
 
-			var doc = new StringBuilder();
+			var json = GenerateJson(version, traitInfos, objectCreator);
-			var currentNamespace = "";
+			Console.WriteLine(json);
-
-			foreach (var t in Game.ModData.ObjectCreator.GetTypesImplementing<TraitInfo>().OrderBy(t => t.Namespace))
-			{
-				if (t.ContainsGenericParameters || t.IsAbstract)
-					continue; // skip helpers like TraitInfo<T>
-
-				if (currentNamespace != t.Namespace)
-				{
-					currentNamespace = t.Namespace;
-					doc.AppendLine();
-					doc.AppendLine($"## {currentNamespace}");
-				}
-
-				var traitName = t.Name.EndsWith("Info") ? t.Name.Substring(0, t.Name.Length - 4) : t.Name;
-				var traitDescLines = t.GetCustomAttributes<DescAttribute>(false).SelectMany(d => d.Lines);
-				doc.AppendLine();
-				doc.AppendLine($"### {traitName}");
-				foreach (var line in traitDescLines)
-					doc.AppendLine(line);
-
-				var requires = RequiredTraitTypes(t);
-				var reqCount = requires.Length;
-				if (reqCount > 0)
-				{
-					if (t.HasAttribute<DescAttribute>())
-						doc.AppendLine();
-
-					doc.Append($"Requires trait{(reqCount > 1 ? "s" : "")}: ");
-
-					var i = 0;
-					foreach (var require in requires)
-					{
-						var n = require.Name;
-						var name = n.EndsWith("Info") ? n.Remove(n.Length - 4, 4) : n;
-						doc.Append($"[`{name}`](#{name.ToLowerInvariant()}){(i + 1 == reqCount ? ".\n" : ", ")}");
-						i++;
-					}
-				}
-
-				var infos = FieldLoader.GetTypeLoadInfo(t);
-				if (!infos.Any())
-					continue;
-				doc.AppendLine();
-				doc.AppendLine("| Property | Default Value | Type | Description |");
-				doc.AppendLine("| -------- | --------------| ---- | ----------- |");
-				var liveTraitInfo = Game.ModData.ObjectCreator.CreateBasic(t);
-				foreach (var info in infos)
-				{
-					var fieldDescLines = info.Field.GetCustomAttributes<DescAttribute>(true).SelectMany(d => d.Lines);
-					var fieldType = Util.FriendlyTypeName(info.Field.FieldType);
-					var loadInfo = info.Field.GetCustomAttributes<FieldLoader.SerializeAttribute>(true).FirstOrDefault();
-					var defaultValue = loadInfo != null && loadInfo.Required ? "*(required)*" : FieldSaver.SaveField(liveTraitInfo, info.Field.Name).Value.Value;
-					doc.Append($"| {info.YamlName} | {defaultValue} | {fieldType} | ");
-					foreach (var line in fieldDescLines)
-						doc.Append(line + " ");
-					doc.AppendLine("|");
-				}
-			}
-
-			Console.Write(doc.ToString());
 		}
 
-		static Type[] RequiredTraitTypes(Type t)
+		static string GenerateJson(string version, IEnumerable<Type> traitTypes, ObjectCreator objectCreator)
+		{
+			var traitTypesInfo = traitTypes.Where(x => !x.ContainsGenericParameters && !x.IsAbstract)
+				.Select(type => new
+				{
+					type.Namespace,
+					Name = type.Name.EndsWith("Info") ? type.Name.Substring(0, type.Name.Length - 4) : type.Name,
+					Description = string.Join(" ", type.GetCustomAttributes<DescAttribute>(false).SelectMany(d => d.Lines)),
+					RequiresTraits = RequiredTraitTypes(type)
+						.Select(y => y.Name),
+					InheritedTypes = type.BaseTypes()
+						.Select(y => y.Name)
+						.Where(y => y != type.Name && y != $"{type.Name}Info" && y != "Object" && y != "TraitInfo`1"), // HACK: This is the simplest way to exclude TraitInfo<T>, which doesn't serialize well.
+					Properties = FieldLoader.GetTypeLoadInfo(type)
+						.Where(fi => fi.Field.IsPublic && fi.Field.IsInitOnly && !fi.Field.IsStatic)
+						.Select(fi => new
+						{
+							PropertyName = fi.YamlName,
+							DefaultValue = FieldSaver.SaveField(objectCreator.CreateBasic(type), fi.Field.Name).Value.Value,
+							InternalType = Util.InternalTypeName(fi.Field.FieldType),
+							UserFriendlyType = Util.FriendlyTypeName(fi.Field.FieldType),
+							Description = string.Join(" ", fi.Field.GetCustomAttributes<DescAttribute>(true).SelectMany(d => d.Lines)),
+							OtherAttributes = fi.Field.CustomAttributes
+								.Where(a => a.AttributeType.Name != nameof(DescAttribute) && a.AttributeType.Name != nameof(FieldLoader.LoadUsingAttribute))
+								.Select(a =>
+								{
+									var name = a.AttributeType.Name;
+									name = name.EndsWith("Attribute") ? name.Substring(0, name.Length - 9) : name;
+
+									return new
+									{
+										Name = name,
+										Parameters = a.Constructor.GetParameters()
+											.Select(pi => new
+											{
+												pi.Name,
+												Value = Util.GetAttributeParameterValue(a.ConstructorArguments[pi.Position])
+											})
+									};
+								})
+						})
+				});
+
+			var result = new
+			{
+				Version = version,
+				TraitInfos = traitTypesInfo
+			};
+
+			return JsonConvert.SerializeObject(result);
+		}
+
+		static IEnumerable<Type> RequiredTraitTypes(Type t)
 		{
 			return t.GetInterfaces()
 				.Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(Requires<>))
 				.SelectMany(i => i.GetGenericArguments())
 				.Where(i => !i.IsInterface && !t.IsSubclassOf(i))
-				.OrderBy(i => i.Name)
+				.OrderBy(i => i.Name);
-				.ToArray();
 		}
 	}
 }