[ragel-users] getNextToken() : how to return ?
Maël Nison
nison.mael at gmail.com
Thu Jan 5 15:18:59 UTC 2012
Hi,
I would like to write a very basic function taking a c++ char const
*&, and returning the first token type.The reference would imply that
the cstring pointer's target is, afterthe function call, the very next
character of the returned token.
Then I would be able to make :while ( token = getNextToken( foo ) )
std::cout << token << std::endl;
I've tried to use something like that (example, probably does
notcompile), but the value of 'p' is not modified when
returning(infinite loop) :
#include "Token.hh"%%machine foo;%%write data;
int getNextToken( char const * & p ) { %%{ foo = "foo";
main := |* foo => { return Foo; }; *|; }%%;
int cs; int act; char const * ts; char const * te; char const * eof;
%% write init; %% write exec noend;}
Additionnaly, I've seen in the documentation that getkey could
beemployed to change the buffer input. Is there an example
usingstandard c++ istreams ?
Thanks : )
--
Maël Nison
Epitech 2014, Paris - Astek
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