| SOURCE_FILE | |
| FN | |
| FN_KW "fn" | |
| WHITESPACE " " | |
| NAME | |
| IDENT "foo" | |
| PARAM_LIST | |
| L_PAREN "(" | |
| R_PAREN ")" | |
| WHITESPACE " " | |
| BLOCK_EXPR | |
| STMT_LIST | |
| L_CURLY "{" | |
| WHITESPACE "\n " | |
| EXPR_STMT | |
| BECOME_EXPR | |
| BECOME_KW "become" | |
| WHITESPACE " " | |
| CALL_EXPR | |
| PATH_EXPR | |
| PATH | |
| PATH_SEGMENT | |
| NAME_REF | |
| IDENT "foo" | |
| ARG_LIST | |
| L_PAREN "(" | |
| R_PAREN ")" | |
| SEMICOLON ";" | |
| WHITESPACE "\n" | |
| R_CURLY "}" | |
| WHITESPACE "\n" |