Merge pull request #10143 from Phrohdoh/interface-reflection

Implement a utility command to check for explicit interface implementation violations.

Makefile

@@ -227,6 +227,9 @@ check: utility mods
 	@echo
 	@echo "Checking for code style violations in OpenRA.Test..."
 	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Test
+	@echo
+	@echo "Checking for explicit interface violations..."
+	@mono --debug OpenRA.Utility.exe all --check-explicit-interfaces
 
 NUNIT_CONSOLE := $(shell test -f thirdparty/download/nunit3-console.exe && echo mono thirdparty/download/nunit3-console.exe || \
 	which nunit3-console 2>/dev/null || which nunit2-console 2>/dev/null || which nunit-console 2>/dev/null)

OpenRA.Game/Traits/TraitsInterfaces.cs

@@ -19,6 +19,8 @@ using OpenRA.Primitives;
 
 namespace OpenRA.Traits
 {
+	public sealed class RequireExplicitImplementationAttribute : Attribute { }
+
 	public enum DamageState { Undamaged, Light, Medium, Heavy, Critical, Dead }
 
 	public interface IHealth
@@ -249,6 +251,8 @@ namespace OpenRA.Traits
 	public interface ILoadsPlayerPalettes { void LoadPlayerPalettes(WorldRenderer wr, string playerName, HSLColor playerColor, bool replaceExisting); }
 	public interface IPaletteModifier { void AdjustPalette(IReadOnlyDictionary<string, MutablePalette> b); }
 	public interface IPips { IEnumerable<PipType> GetPips(Actor self); }
+
+	[RequireExplicitImplementation]
 	public interface ISelectionBar { float GetValue(); Color GetColor(); }
 
 	public interface IPositionableInfo : ITraitInfoInterface { }

OpenRA.Mods.Common/OpenRA.Mods.Common.csproj

@@ -726,6 +726,7 @@
     <Compile Include="FileFormats\RLEZerosCompression.cs" />
     <Compile Include="FileFormats\IniFile.cs" />
     <Compile Include="Orders\GuardOrderGenerator.cs" />
+    <Compile Include="UtilityCommands\CheckExplicitInterfacesCommand.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>

OpenRA.Mods.Common/Traits/Buildings/BaseProvider.cs

@@ -78,8 +78,7 @@ namespace OpenRA.Mods.Common.Traits
 				Color.FromArgb(96, Color.Black));
 		}
 
-		// Selection bar
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			// Visible to player and allies
 			if (!ValidRenderPlayer())
@@ -92,6 +91,6 @@ namespace OpenRA.Mods.Common.Traits
 			return (float)progress / total;
 		}
 
-		public Color GetColor() { return Color.Purple; }
+		Color ISelectionBar.GetColor() { return Color.Purple; }
 	}
 }

OpenRA.Mods.Common/Traits/ExternalCapturableBar.cs

@@ -28,7 +28,7 @@ namespace OpenRA.Mods.Common.Traits
 			capturable = self.Trait<ExternalCapturable>();
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			// only show when building is being captured
 			if (!capturable.CaptureInProgress)
@@ -37,6 +37,6 @@ namespace OpenRA.Mods.Common.Traits
 			return (float)capturable.CaptureProgressTime / (capturable.Info.CaptureCompleteTime * 25);
 		}
 
-		public Color GetColor() { return Color.Orange; }
+		Color ISelectionBar.GetColor() { return Color.Orange; }
 	}
 }

OpenRA.Mods.Common/Traits/Power/AffectedByPowerOutage.cs

@@ -28,7 +28,7 @@ namespace OpenRA.Mods.Common.Traits
 			playerPower = self.Owner.PlayerActor.Trait<PowerManager>();
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			if (playerPower.PowerOutageRemainingTicks <= 0)
 				return 0;
@@ -36,7 +36,7 @@ namespace OpenRA.Mods.Common.Traits
 			return (float)playerPower.PowerOutageRemainingTicks / playerPower.PowerOutageTotalTicks;
 		}
 
-		public Color GetColor()
+		Color ISelectionBar.GetColor()
 		{
 			return Color.Yellow;
 		}

OpenRA.Mods.Common/Traits/Render/ProductionBar.cs

@@ -70,7 +70,7 @@ namespace OpenRA.Mods.Common.Traits
 			value = current != null ? 1 - (float)current.RemainingCost / current.TotalCost : 0;
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			// only people we like should see our production status.
 			if (!self.Owner.IsAlliedWith(self.World.RenderPlayer))
@@ -79,7 +79,7 @@ namespace OpenRA.Mods.Common.Traits
 			return value;
 		}
 
-		public Color GetColor() { return info.Color; }
+		Color ISelectionBar.GetColor() { return info.Color; }
 
 		public void OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
 		{

OpenRA.Mods.Common/Traits/Render/SupportPowerChargeBar.cs

@@ -33,7 +33,7 @@ namespace OpenRA.Mods.Common.Traits
 			this.info = info;
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			if (!self.Owner.IsAlliedWith(self.World.RenderPlayer))
 				return 0;
@@ -46,6 +46,6 @@ namespace OpenRA.Mods.Common.Traits
 			return 1 - (float)power.RemainingTime / power.TotalTime;
 		}
 
-		public Color GetColor() { return info.Color; }
+		Color ISelectionBar.GetColor() { return info.Color; }
 	}
 }

OpenRA.Mods.Common/Traits/Render/TimedUpgradeBar.cs

@@ -47,7 +47,7 @@ namespace OpenRA.Mods.Common.Traits
 			value = remaining * 1f / duration;
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			if (!self.Owner.IsAlliedWith(self.World.RenderPlayer))
 				return 0;
@@ -55,6 +55,6 @@ namespace OpenRA.Mods.Common.Traits
 			return value;
 		}
 
-		public Color GetColor() { return info.Color; }
+		Color ISelectionBar.GetColor() { return info.Color; }
 	}
 }

OpenRA.Mods.Common/UtilityCommands/CheckExplicitInterfacesCommand.cs

@@ -0,0 +1,122 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Linq;
+using System.Reflection;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.UtilityCommands
+{
+	public class CheckExplicitInterfacesCommand : IUtilityCommand
+	{
+		string IUtilityCommand.Name { get { return "--check-explicit-interfaces"; } }
+
+		bool IUtilityCommand.ValidateArguments(string[] args)
+		{
+			return args.Length == 1;
+		}
+
+		int violationCount;
+
+		[Desc("Check for explicit interface implementation violations in all assemblies referenced by the specified mod.")]
+		void IUtilityCommand.Run(ModData modData, string[] args)
+		{
+			var types = modData.ObjectCreator.GetTypes();
+
+			foreach (var implementingType in types.Where(t => !t.IsInterface))
+			{
+				if (implementingType.IsEnum)
+					continue;
+
+				var interfaces = implementingType.GetInterfaces();
+				foreach (var interfaceType in interfaces)
+				{
+					if (!interfaceType.HasAttribute<RequireExplicitImplementationAttribute>())
+						continue;
+
+					var interfaceMembers = interfaceType.GetMembers();
+					foreach (var interfaceMember in interfaceMembers)
+					{
+						if (interfaceMember.Name.StartsWith("get_") || interfaceMember.Name.StartsWith("set_"))
+							continue;
+
+						var interfaceMethod = interfaceMember as MethodInfo;
+						if (interfaceMethod != null)
+						{
+							var interfaceMethodParams = interfaceMethod.GetParameters();
+							foreach (var implementingMethod in implementingType.GetMethods())
+							{
+								if (implementingMethod.Name != interfaceMethod.Name
+									|| implementingMethod.ReturnType != interfaceMethod.ReturnType)
+									continue;
+
+								var implementingMethodParams = implementingMethod.GetParameters();
+								var lenImpl = implementingMethodParams.Length;
+								if (lenImpl != interfaceMethodParams.Length)
+									continue;
+
+								var allMatch = true;
+								for (var i = 0; i < lenImpl; i++)
+								{
+								    var implementingParam = implementingMethodParams[i];
+								    var interfaceParam = interfaceMethodParams[i];
+								    if (implementingParam.ParameterType != interfaceParam.ParameterType
+										|| implementingParam.Name != interfaceParam.Name
+										|| implementingParam.IsOut != interfaceParam.IsOut)
+								    {
+										allMatch = false;
+										break;
+								    }
+								}
+
+								// Explicitly implemented methods are never public in C#.
+								if (allMatch && implementingMethod.IsPublic)
+									OnViolation(implementingType, interfaceType, implementingMethod);
+							}
+						}
+
+						var interfaceProperty = interfaceMember as PropertyInfo;
+						if (interfaceProperty != null)
+						{
+							var implementingProperties = implementingType.GetProperties();
+							foreach (var implementingProperty in implementingProperties)
+							{
+								if (implementingProperty.PropertyType != interfaceProperty.PropertyType
+									|| implementingProperty.Name != interfaceProperty.Name)
+									continue;
+
+								if (!IsExplicitInterfaceProperty(implementingProperty))
+									OnViolation(implementingType, interfaceType, implementingProperty);
+							}
+						}
+					}
+				}
+			}
+
+			if (violationCount > 0)
+			{
+				Console.WriteLine("Explicit interface violations: {0}", violationCount);
+				Environment.Exit(1);
+			}
+		}
+
+		static bool IsExplicitInterfaceProperty(PropertyInfo pi)
+		{
+			return pi.Name.Contains(".");
+		}
+
+		void OnViolation(Type implementor, Type interfaceType, MemberInfo violator)
+		{
+			Console.WriteLine("{0} must explicitly implement the interface member {1}.{2}", implementor.Name, interfaceType.Name, violator.Name);
+			violationCount++;
+		}
+	}
+}

OpenRA.Mods.D2k/Traits/TemporaryOwnerManager.cs

@@ -66,7 +66,7 @@ namespace OpenRA.Mods.D2k.Traits
 				changingOwner = null; // It was triggered by this trait: reset
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			if (remaining <= 0)
 				return 0;
@@ -74,7 +74,7 @@ namespace OpenRA.Mods.D2k.Traits
 			return (float)remaining / duration;
 		}
 
-		public Color GetColor()
+		Color ISelectionBar.GetColor()
 		{
 			return info.BarColor;
 		}

OpenRA.Mods.RA/Traits/Chronoshiftable.cs

@@ -114,7 +114,7 @@ namespace OpenRA.Mods.RA.Traits
 		}
 
 		// Show the remaining time as a bar
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			if (!info.ReturnToOrigin)
 				return 0f;
@@ -126,7 +126,7 @@ namespace OpenRA.Mods.RA.Traits
 			return (float)ReturnTicks / duration;
 		}
 
-		public Color GetColor() { return info.TimeBarColor; }
+		Color ISelectionBar.GetColor() { return info.TimeBarColor; }
 
 		public void ModifyDeathActorInit(Actor self, TypeDictionary init)
 		{

OpenRA.Mods.RA/Traits/PortableChrono.cs

@@ -105,12 +105,12 @@ namespace OpenRA.Mods.RA.Traits
 			get { return chargeTick <= 0; }
 		}
 
-		public float GetValue()
+		float ISelectionBar.GetValue()
 		{
 			return (float)(Info.ChargeDelay - chargeTick) / Info.ChargeDelay;
 		}
 
-		public Color GetColor() { return Color.Magenta; }
+		Color ISelectionBar.GetColor() { return Color.Magenta; }
 	}
 
 	class PortableChronoOrderTargeter : IOrderTargeter

make.ps1

@@ -174,6 +174,8 @@ elseif ($command -eq "check")
 		./OpenRA.Utility.exe cnc --check-code-style OpenRA.Utility
 		echo "Checking for code style violations in OpenRA.Test..."
 		./OpenRA.Utility.exe cnc --check-code-style OpenRA.Test
+		echo "Checking for explicit interface violations..."
+		./OpenRA.Utility.exe all --check-explicit-interfaces
 	}
 	else
 	{