syntax_data: {"ast_node_type":"other","tokens":[{"end":27,"kind":"keyword","start":0,"text":"alignment_mask,"}]}
source_snippet:             alignment_mask,
context_before:         StatementKind::Assign(Box::new((
context_after:             Rvalue::BinaryOp(BinOp::Sub, Box::new((Operand::Copy(alignment), one))),