syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"ty::ConstKind::Value(cv)"}]}
source_snippet:             ty::ConstKind::Value(cv) => convert.valtree_to_pat(cv.valtree, cv.ty),
context_before:             ty::ConstKind::Unevaluated(uv) => convert.unevaluated_to_pat(uv, ty),
context_after:             _ => span_bug!(span, "Invalid `ConstKind` for `const_to_pat`: {:?}", c),