TOperatorJumpTable::MapBinary

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template<typename OperatorType, typename FuncType>  
void MapBinary  
(  
    FuncType InFunc  
)  
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template<typename OperatorType, typename FuncType> void MapBinary (     FuncType InFunc )

Remarks

Map an expression node to a binary operator with the specified implementation.

The callable type must match the declaration Ret(OperandL, OperandR, [, Context]), where: Ret = Any DEFINE_EXPRESSION_NODE_TYPE type, OR FExpressionResult OperandL = Any DEFINE_EXPRESSION_NODE_TYPE type OperandR = Any DEFINE_EXPRESSION_NODE_TYPE type Context = (optional) const ptr to user-supplied arbitrary context

Examples that binds a '/' token to a function that attempts to do a division: JumpTable.MapUnary(double A, double B{ return A / B; }); // Runtime exception on div/0 JumpTable.MapUnary({ if (!Ctxt->IsMathEnabled()) { return A; } return A / B; // Runtime exception on div/0 }); JumpTable.MapUnary( -> FExpressionResult { if (!Ctxt->IsMathEnabled()) { return MakeError(FExpressionError(LOCTEXT("MathNotEnabled", "Math is not enabled."))); } else if (B == 0) { return MakeError(FExpressionError(LOCTEXT("DivisionByZero", "Division by zero."))); }

return MakeValue(!A); });