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Re: int(*const parse_packet)(const char *, size_t, char **);

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On 31/08/2021 22:32, Chris M. Thomasson wrote:
> On 8/31/2021 2:08 PM, John Bode wrote:
>> On 8/31/21 5:35 AM, hongy...@gmail.com wrote:
>>> See the following c code snippet located at here [1]:
>>>
>>> typedef struct protocol {
>>> const int default_port;
>>> int(*const parse_packet)(const char *, size_t, char **);
>>> } protocol_t;
>>>
>>> In the above definition, it seems to me that the `int ...' line is 
>>> difficult to understand. Any hints will be highly appreciated.
>>>
>>> [1] 
>>> https://github.com/hongyi-zhao/shadowsocksr-libev/blob/1be671bd5fe7cd55d3823d4669786c9ba7913b9e/src/protocol.h#L29 
>>>
>>>
>>> Regards,
>>> HY
>>>
>>
>> When reading complex declarations, start by finding the leftmost
>> identifier and work your way out, remembering the following rules:
> [...]
> 
> I must be misunderstanding you, however, I like to go from right to left:
> 
> struct foo const* const p = &foo;
> 
> p would be a constant pointer, to a constant foo structure.
> 

That doesn't work. Compare:

   const struct foo *p[];
   const struct foo (*p)[];

They can't both be array of pointer, and the 'const' shouldn't be at the 
end.

What about:

   int A[10][20];

Is is array 20 of array 10, or the other way around?

 >> When reading complex declarations, start by finding the leftmost
 >> identifier

This doesn't work either when there is no identifier (cast or unnamed 
parameter).

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int(*const parse_packet)(const char *, size_t, char **); "hongy...@gmail.com" <hongyi.zhao@gmail.com> - 2021-08-31 03:35 -0700
  Re: int(*const parse_packet)(const char *, size_t, char **); Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-31 12:59 +0200
    Re: int(*const parse_packet)(const char *, size_t, char **); "hongy...@gmail.com" <hongyi.zhao@gmail.com> - 2021-08-31 06:07 -0700
      Re: int(*const parse_packet)(const char *, size_t, char **); Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-08-31 08:01 -0700
  Re: int(*const parse_packet)(const char *, size_t, char **); Manfred <noname@add.invalid> - 2021-08-31 15:01 +0200
  Re: int(*const parse_packet)(const char *, size_t, char **); John Bode <jfbode1029@gmail.com> - 2021-08-31 16:08 -0500
    Re: int(*const parse_packet)(const char *, size_t, char **); "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-08-31 14:32 -0700
      Re: int(*const parse_packet)(const char *, size_t, char **); Bart <bc@freeuk.com> - 2021-08-31 22:39 +0100
        Re: int(*const parse_packet)(const char *, size_t, char **); "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-09-01 14:40 -0700
    Re: int(*const parse_packet)(const char *, size_t, char **); "hongy...@gmail.com" <hongyi.zhao@gmail.com> - 2021-08-31 18:21 -0700
      Re: int(*const parse_packet)(const char *, size_t, char **); Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-08-31 19:54 -0700
    Re: int(*const parse_packet)(const char *, size_t, char **); Kaz Kylheku <563-365-8930@kylheku.com> - 2021-09-01 05:07 +0000
      Re: int(*const parse_packet)(const char *, size_t, char **); "hongy...@gmail.com" <hongyi.zhao@gmail.com> - 2021-08-31 23:19 -0700
  Re: int(*const parse_packet)(const char *, size_t, char **); James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-09-01 10:34 -0400
    Re: int(*const parse_packet)(const char *, size_t, char **); Bart <bc@freeuk.com> - 2021-09-01 16:22 +0100
      Re: int(*const parse_packet)(const char *, size_t, char **); "hongy...@gmail.com" <hongyi.zhao@gmail.com> - 2021-09-01 20:02 -0700
        Re: int(*const parse_packet)(const char *, size_t, char **); Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-09-01 21:01 -0700
          Re: int(*const parse_packet)(const char *, size_t, char **); "hongy...@gmail.com" <hongyi.zhao@gmail.com> - 2021-09-01 23:18 -0700
          Re: int(*const parse_packet)(const char *, size_t, char **); scott@slp53.sl.home (Scott Lurndal) - 2021-09-02 15:02 +0000
            Re: int(*const parse_packet)(const char *, size_t, char **); Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-09-02 15:24 +0000
        Re: int(*const parse_packet)(const char *, size_t, char **); Bart <bc@freeuk.com> - 2021-09-02 10:40 +0100
  Re: int(*const parse_packet)(const char *, size_t, char **); Paul N <gw7rib@aol.com> - 2021-09-01 08:32 -0700

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