Tool to delete unneeded methods/enums, etc.

[Julek]

Hi,
is there a tool which parses cpp and h files, finds unused things, and
deletes them from code? For example unused methods, enums, enum
values, defines... It doesn't have to be sophisticated (it doesn't
have to check, that ClassA::funX is used somewhere, but ClassB::funX
is not used anywhere, so we can delete only ClassB::funX).

Thanks in advance!

[Jerry Coffin]

In article <62e3029a-2655-4b63-9511-d561acba7a89@
34g2000hsh.googlegroups.com>, ju******@go2.pl says...

Hi,
is there a tool which parses cpp and h files, finds unused things, and
deletes them from code?

Yes. It's called an "optimizing compiler". :-)

For example unused methods, enums, enum
values, defines... It doesn't have to be sophisticated (it doesn't
have to check, that ClassA::funX is used somewhere, but ClassB::funX
is not used anywhere, so we can delete only ClassB::funX).

Realistically, getting something like this to work correctly would be
quite difficult -- little short of a full-blown compiler could really do
the job correctly.

--
Later,
Jerry.

The universe is a figment of its own imagination.

[James Kanze]

On Jun 30, 5:57 pm, Jerry Coffin <[e-mail]:

In article <62e3029a-2655-4b63-9511-d561acba7a89@
34g2000hsh.googlegroups.com>, [e-mail] says...

is there a tool which parses cpp and h files, finds unused
things, and deletes them from code?

Yes. It's called an "optimizing compiler". :-)

For example unused methods, enums, enum
values, defines... It doesn't have to be sophisticated (it doesn't
have to check, that ClassA::funX is used somewhere, but ClassB::funX
is not used anywhere, so we can delete only ClassB::funX).

Realistically, getting something like this to work correctly would be
quite difficult -- little short of a full-blown compiler could really do
the job correctly.

FWIW: one Fortran compiler I used (around 1978) did output a
message when it suppressed a line because it couldn't be
reached, or otherwise did something which had no effect. This
could actually be very helpful---in one case, I remember getting
messages to the effect:
line x: removed, because variable YO is never used.
line y: variable Y0 used without being set.
I'm not sure about the relative utility of such a thing in C++,
however. The preprocessor makes it a bit awkward: what if I
don't use the enum E (defined in some header); maybe some other
code in another application does use it.

--
James Kanze (GABI Software) email:ja*********@gmail.com
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