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

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FRigVMVarExprAST

An abstract syntax tree var expression represents the definition of mutable memory for a single variable.

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Inheritance Hierarchy

FRigVMExprAST

FRigVMVarExprAST

FRigVMLiteralExprAST

References

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

Syntax

class FRigVMVarExprAST : public FRigVMExprAST

Remarks

An abstract syntax tree var expression represents the definition of mutable memory for a single variable. In C++ the var expression is a variable declaration: int A; The var expression references a pin from the model.

Constructors

	Name	Description
	FRigVMVarExprAST ( const FRigVMVarExprAST& )	Disable copy constructor
	FRigVMVarExprAST ( const FRigVMParserAST* InParse..., URigVMPin* InPin, EType InType )	Default constructor (protected so that only parser can access it)

Destructors

	Name	Description
	~FRigVMVarExprAST()	Virtual destructor

Functions

	Name	Description
FString	GetCPPType()	Returns the C++ data type of this variable
UObject *...	GetCPPTypeObject()	Returns the C++ data type object (ustruct / uenum)
FString	GetDefaultValue()	Returns the default value on the pin for this variable
URigVMPin &#...	GetPin()	Returns the pin in the model this variable is representing
ERigVMPinDir...	GetPinDirection()	Returns the pin direction of this variable (input, output, hidden etc)
bool	IsExecuteContext()	Returns true if this variable is an execute context
bool	IsGraphParameter()	Returns true if this variable is a graph parameter
bool	IsGraphVariable()	Returns true if this variable is a graph variable

Overridden from FRigVMExprAST

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

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