syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"Some(GlobalAlloc::Memory(alloc))"}]}
source_snippet:                         Some(GlobalAlloc::Memory(alloc)) => {
context_before:                     match self.tcx().try_get_global_alloc(prov.alloc_id()) {
context_after:                             let range = AllocRange { start: offset, size: Size::from_bytes(len) };