Question: Possibility for automatic expansion partway through trigger?

[mayurankv]

I want to use the trigger || -> \left\lvert$0\right\rvert$1 and ||| -> \left\lVert$0\right\rVert$1. Is it possible to have an automatic trigger on \\left\\lvert|{cursor}\\right\\rvert to \left\lVert$0\right\rVert$1 where my cursor finishes typing at the {cursor} point. Is there a better way of going about it? I tried lookahead but it didn't seem to work.