public override object Result(LogicExecutionState state)
{
var obj = this.Expression.Result(state);
if (obj is float)
{
switch (this.Op)
{
case "-":
return(-(float)obj);
default:
throw new InvalidOperationException();
}
}
switch (this.Op)
{
case "-":
return(LogicBuiltins.Negate(new List <object> {
obj
}));
default:
throw new InvalidOperationException();
}
}
public override Expression Compile(ParameterExpression stateParameterExpression, LabelTarget returnTarget)
{
switch (this.Op)
{
case "-":
return
(Expr.Invoke(
(Expression <Func <object, object> >)
(x => x is float? - (float)x: LogicBuiltins.Negate(new List <object> {
x
})),
Expr.Convert(this.Expression.Compile(stateParameterExpression, returnTarget), typeof(object))));
default:
throw new InvalidOperationException();
}
}