syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:                 for i in 0..layout.fields.count() {
context_before:             BackendRepr::ScalarPair(..) | BackendRepr::Memory { .. } => {
context_after:                     let field_off = off + layout.fields.offset(i);