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> Unreal Engine API Reference > Developer > RigVMDeveloper > RigVMCompiler > FRigVMNoOpExprAST

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FRigVMNoOpExprAST

An abstract syntax tree no-op expression represents an expression which is relevant for the structure of the tree (for grouping for example) but which itself has no operation connected to it.

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Inheritance Hierarchy

FRigVMExprAST

FRigVMBlockExprAST

FRigVMNodeExprAST

FRigVMNoOpExprAST

References

Module	RigVMDeveloper
Header	/Engine/Source/Developer/RigVMDeveloper/Public/RigVMCompiler/RigVMAST.h
Include	#include "RigVMCompiler/RigVMAST.h"

Syntax

class FRigVMNoOpExprAST : public FRigVMNodeExprAST

Remarks

An abstract syntax tree no-op expression represents an expression which is relevant for the structure of the tree (for grouping for example) but which itself has no operation connected to it. For the RigVM AST we use the no-op expression for representing reroute nodes in the model as well as parameter and variable getter nodes.

Constructors

	Name	Description
	FRigVMNoOpExprAST ( const FRigVMNoOpExprAST& )	Disable copy constructor
	FRigVMNoOpExprAST ( UObject* InSubject )	Default constructor (protected so that only parser can access it)

Destructors

	Name	Description
	~FRigVMNoOpExprAST()	Virtual destructor

Overridden from FRigVMExprAST

		Name	Description
	bool	IsA ( EType InType )	Overload of the type checking mechanism

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