syntax_data: {"ast_node_type":"import","tokens":[{"end":44,"kind":"keyword","start":0,"text":"use"}]}
source_snippet:             use rustc_middle::ty::ScalarInt;
context_before:         pub fn from_const<'tcx>(tcx: TyCtxt<'tcx>, ct: Const<'tcx>) -> Option<Self> {
context_after:             use rustc_span::sym;