IWYU cleanup done

Docs/TASKS/IWYU.md

@@ -0,0 +1,50 @@
+Your job is to remove unnecessary include-files from a
+single C++ source file in UE Wingman, and also, add missing
+includes.
+
+Remember: not all removals that compile are good according
+to the principles of IWYU.  A source file should include or
+forward-define everything it uses, and should include
+nothing that it doesn't.  You will need to think seriously.
+
+To test your work, you will need to do a build:
+
+    python3 build.py c++
+
+followed by:
+
+    tools/clangd-query.py diagnostics <file>
+    
+Sometimes, clangd gets desynchronized.  If clangd is
+reporting an error on UCLASS or on GENERATED_BODY after a
+successful build, then clangd is out of sync.  In that case,
+you will need to refresh clangd:
+
+    tools/clangd-query.py stop
+
+Then you can try again with the diagnostics. If the testing
+reveals a mistake, please fix it and then redo the testing.
+
+Start by reading the head of TODO.txt, which lists the files
+that need to be cleaned.  Please clean up the first file on
+the todo list, then remove that one file from the todo list.
+Then you are done.
+
+One special exception to IWYU: all unreal code should include
+CoreMinimal.h, no matter what.
+
+There is no need to run clangd before you begin.  These
+files are already clangd-clean.
+
+Do not be chatty about it.  Just begin, get it cleaned, and
+then very concisely report your results.  And once again: do
+not forget the principle of IWYU: not all removals that
+compile are good.  If a file is using a symbol, it should
+include it or forward-define it, not rely on transitive
+includes.  Remove what should be removed, add what should be
+added.
+
+
+
+
+

Plugins/UEWingman/Source/UEWingman/Private/WingComponent.cpp

@@ -1,11 +1,8 @@
 #include "WingComponent.h"
 #include "WingTypes.h"
 #include "WingUtils.h"
-#include "WingBasics.h"
-#include "Engine/Blueprint.h"
 #include "Engine/SCS_Node.h"
 #include "Engine/SimpleConstructionScript.h"
-#include "Components/ActorComponent.h"
 #include "Components/SceneComponent.h"
 #include "GameFramework/Actor.h"
 #include "Kismet2/BlueprintEditorUtils.h"

Plugins/UEWingman/Source/UEWingman/Private/WingUtils.cpp

@@ -1,28 +1,15 @@
 #include "WingUtils.h"
-#include "WingComponent.h"
 #include "WingProperty.h"
 #include "WingTypes.h"
 #include "WingServer.h"
-#include "WingBasics.h"
 #include "WingTokenizer.h"
 #include "PropertyHandle.h"
-#include "Engine/Blueprint.h"
-#include "Engine/MemberReference.h"
 #include "Engine/World.h"
-#include "Components/ActorComponent.h"
 #include "Engine/SCS_Node.h"
-#include "EdGraph/EdGraph.h"
-#include "EdGraph/EdGraphNode.h"
-#include "EdGraph/EdGraphPin.h"
-#include "K2Node_EditablePinBase.h"
-#include "EdGraph/EdGraphSchema.h"
 #include "Kismet2/BlueprintEditorUtils.h"
 #include "Kismet2/Kismet2NameValidators.h"
-#include "Kismet2/KismetEditorUtilities.h"
 #include "UObject/UObjectIterator.h"
 #include "UObject/UnrealType.h"
-#include "Misc/Paths.h"
-#include "Misc/PackageName.h"
 
 // Reparent validation
 #include "Engine/LevelScriptActor.h"
@@ -36,7 +23,6 @@
 
 // Material support
 #include "Materials/Material.h"
-#include "Materials/MaterialExpression.h"
 #include "Materials/MaterialFunction.h"
 #include "Materials/MaterialInstanceConstant.h"
 #include "MaterialGraph/MaterialGraph.h"

tools/clangd-query.py

@@ -3,12 +3,14 @@
 
 Usage:
     python3 tools/clangd-query.py symbol <name>
+    python3 tools/clangd-query.py diagnostics <file>
     python3 tools/clangd-query.py definition <file> <line> <col>
     python3 tools/clangd-query.py references <file> <line> <col>
     python3 tools/clangd-query.py stop
 
 Commands:
     symbol <name>               Search for symbols by name across the project.
+    diagnostics <file>          Report clangd diagnostics for a file.
     definition <file> <line> <col>  Find where a symbol is defined.
     references <file> <line> <col>  Find all references to a symbol.
     stop                        Stop the background daemon.
@@ -22,15 +24,15 @@ Examples:
 
 How it works:
     The first invocation starts a background clangd daemon process. It loads
-    the project index from .vscode/.cache/clangd/index/ (shared with VS Code's
+    the project through a dedicated .clangd-query compile-commands directory,
-    clangd). This takes ~10 seconds. Subsequent queries hit the warm daemon
+    which gives it a separate clangd cache. This takes ~10 seconds.
-    and return in milliseconds.
+    Subsequent queries hit the warm daemon and return in milliseconds.
 
     Clangd configuration (binary path, flags) is read from
     Integration.code-workspace so it stays in sync with VS Code.
 
-    The daemon writes its PID to .clangd-query.pid and listens on a Unix
+    The daemon writes its PID to .clangd-query/pid and listens on a Unix
-    socket at .clangd-query.sock. Use 'stop' to shut it down, or just kill
+    socket at .clangd-query/sock. Use 'stop' to shut it down, or just kill
     the PID. Starting a new daemon automatically kills any existing one.
 """