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    "
        LOOP_EXPR
          LOOP_KW "loop"
          WHITESPACE " "
          BLOCK_EXPR
            STMT_LIST
              L_CURLY "{"
              WHITESPACE "\n        "
              EXPR_STMT
                CONTINUE_EXPR
                  CONTINUE_KW "continue"
                SEMICOLON ";"
              WHITESPACE "\n        "
              EXPR_STMT
                CONTINUE_EXPR
                  CONTINUE_KW "continue"
                  WHITESPACE " "
                  LIFETIME
                    LIFETIME_IDENT "'l"
                SEMICOLON ";"
              WHITESPACE "\n    "
              R_CURLY "}"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n"