New slash command parser

Source/Integration/ReadSlashCommand.h

@@ -0,0 +1,74 @@
+////////////////////////////////////////////////////////////
+//
+// ReadSlashCommand.h
+//
+// K2Node that reads typed values from a UlxLuaValues array.
+// Takes a prototype string like "string x, float y, int z"
+// and creates output pins with the appropriate types.
+//
+////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "LuprexK2Node.h"
+
+#include "ReadSlashCommand.generated.h"
+
+class FBlueprintActionDatabaseRegistrar;
+class FString;
+class UEdGraph;
+class UObject;
+
+UCLASS(MinimalAPI)
+class UK2Node_ReadSlashCommand : public UlxK2Node
+{
+	GENERATED_BODY()
+
+public:
+	//~ Begin UEdGraphNode Interface.
+	virtual void AllocateDefaultPins() override;
+	virtual FText GetNodeTitle(ENodeTitleType::Type TitleType) const override;
+	virtual bool ShouldShowNodeProperties() const override { return true; }
+	virtual void PinDefaultValueChanged(UEdGraphPin* Pin) override;
+	virtual FText GetTooltipText() const override;
+	virtual FText GetPinDisplayName(const UEdGraphPin* Pin) const override;
+	//~ End UEdGraphNode Interface.
+
+	//~ Begin UK2Node Interface.
+	virtual bool IsNodePure() const override { return false; }
+	virtual void ReconstructNode() override;
+	virtual bool NodeCausesStructuralBlueprintChange() const override { return true; }
+	virtual void ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph) override;
+	virtual ERedirectType DoPinsMatchForReconstruction(const UEdGraphPin* NewPin, int32 NewPinIndex, const UEdGraphPin* OldPin, int32 OldPinIndex) const override;
+	virtual bool IsConnectionDisallowed(const UEdGraphPin* MyPin, const UEdGraphPin* OtherPin, FString& OutReason) const override;
+	virtual void GetMenuActions(FBlueprintActionDatabaseRegistrar& ActionRegistrar) const override;
+	virtual FText GetMenuCategory() const override;
+	virtual int32 GetNodeRefreshPriority() const override { return EBaseNodeRefreshPriority::Low_UsesDependentWildcard; }
+	//~ End UK2Node Interface.
+
+private:
+	static const FName PrototypePinName;
+	static const FName InputValuesPinName;
+	static const FName ErrorPinName;
+
+	struct ParsingStep
+	{
+		FString Word;
+		FName PinName;
+		UFunction *ReadFunction;
+	};
+
+	bool ParsePrototype(const FString &Prototype, TArray<ParsingStep>& Steps);
+	
+private:
+	// Whenever the prototype pin value changes, we call
+	// ReconstructNode, which backs up the value into this
+	// property.  This cache is needed because during
+	// ReconstructNode, we blow away the prototype pin.  The
+	// prototype pin is also absent when the node is first
+	// created.
+	//
+	UPROPERTY()
+	FString ValuePrototype = TEXT("/command Integer Float");
+
+};