syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"target_val!(metadata);"}]}
source_snippet:         target_val!(metadata);
context_before:         target_val!(llvm_target);
context_after:         d.insert("target-pointer-width".to_string(), self.pointer_width.to_string().to_json());