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
          CLOSURE_EXPR
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            TUPLE_EXPR
              L_PAREN "("
              R_PAREN ")"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            RET_TYPE
              THIN_ARROW "->"
              WHITESPACE " "
              PATH_TYPE
                PATH
                  PATH_SEGMENT
                    NAME_REF
                      IDENT "i32"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                WHITESPACE " "
                LITERAL
                  INT_NUMBER "92"
                WHITESPACE " "
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            PARAM_LIST
              PIPE "|"
              PARAM
                IDENT_PAT
                  NAME
                    IDENT "x"
              PIPE "|"
            WHITESPACE " "
            PATH_EXPR
              PATH
                PATH_SEGMENT
                  NAME_REF
                    IDENT "x"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            MOVE_KW "move"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PARAM
                IDENT_PAT
                  NAME
                    IDENT "x"
                COLON ":"
                WHITESPACE " "
                PATH_TYPE
                  PATH
                    PATH_SEGMENT
                      NAME_REF
                        IDENT "i32"
              COMMA ","
              PIPE "|"
            WHITESPACE " "
            PATH_EXPR
              PATH
                PATH_SEGMENT
                  NAME_REF
                    IDENT "x"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            ASYNC_KW "async"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            MOVE_KW "move"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            ASYNC_KW "async"
            WHITESPACE " "
            MOVE_KW "move"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            STATIC_KW "static"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            STATIC_KW "static"
            WHITESPACE " "
            MOVE_KW "move"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            STATIC_KW "static"
            WHITESPACE " "
            ASYNC_KW "async"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            STATIC_KW "static"
            WHITESPACE " "
            ASYNC_KW "async"
            WHITESPACE " "
            MOVE_KW "move"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            FOR_KW "for"
            GENERIC_PARAM_LIST
              L_ANGLE "<"
              LIFETIME_PARAM
                LIFETIME
                  LIFETIME_IDENT "'a"
              R_ANGLE ">"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          CLOSURE_EXPR
            FOR_KW "for"
            GENERIC_PARAM_LIST
              L_ANGLE "<"
              LIFETIME_PARAM
                LIFETIME
                  LIFETIME_IDENT "'a"
              R_ANGLE ">"
            WHITESPACE " "
            MOVE_KW "move"
            WHITESPACE " "
            PARAM_LIST
              PIPE "|"
              PIPE "|"
            WHITESPACE " "
            BLOCK_EXPR
              STMT_LIST
                L_CURLY "{"
                R_CURLY "}"
          SEMICOLON ";"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n"
