syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"\"parse"}]}
source_snippet:         "parse and expand the source, but run no analysis"),
context_before:     no_analysis: bool = (false, parse_no_value, [UNTRACKED],
context_after:     no_codegen: bool = (false, parse_no_value, [TRACKED_NO_CRATE_HASH],