public Expression VisitZenStringSubstringExpr(ZenStringSubstringExpr expression, ExpressionConverterEnvironment parameter)
{
return(LookupOrCompute(expression, () =>
{
var e1 = expression.StringExpr.Accept(this, parameter);
var e2 = expression.OffsetExpr.Accept(this, parameter);
var e3 = expression.LengthExpr.Accept(this, parameter);
return Expression.Call(null, substringMethod, new Expression[] { e1, e2, e3 });
}));
}
public ImmutableHashSet <object> VisitZenStringSubstringExpr(ZenStringSubstringExpr expression, Unit parameter)
{
throw new ZenException($"Invalid string type used with Decision Diagram backend.");
}