syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"ConstValue::Scalar(Scalar::from_target_usize(max_mask,"}]}
source_snippet:                 ConstValue::Scalar(Scalar::from_target_usize(max_mask, &tcx)),
context_before:             const_: Const::Val(
context_after:                 tcx.types.usize,