Multiple Lexer

[Philip Herron]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hey

I have been going through the autoconf/automake mailing lists for this.
I thought i had this fixed.

So my problems is i have a program which it would be nice to have 2
completely separate lexers only one of them needs a yacc grammar file.

So i dont know if its possible but it would be really awesome if i can
do it. I keep getting the errors:

So what i have done so far is in my first lexer its a really basic lexer
but it was better use flex than write it manualy:

//gdb hack for multiple lexers
#define yymaxdepth al_maxdepth
#define yyparse al_parse
#define yylex   al_lex
#define yyerror al_error
#define yylval  al_lval
#define yychar  al_char
#define yydebug al_debug
#define yypact  al_pact
#define yyr1    al_r1
#define yyr2    al_r2
#define yydef   al_def
#define yychk   al_chk
#define yypgo   al_pgo
#define yyact   al_act
#define yyexca  al_exca
#define yyerrflag al_errflag
#define yynerrs al_nerrs
#define yyps    al_ps
#define yypv    al_pv
#define yys     al_s
#define yy_yys  al_yys
#define yystate al_state
#define yytmp   al_tmp
#define yyv     al_v
#define yy_yyv  al_yyv
#define yyval   al_val
#define yylloc  al_lloc
#define yyreds  al_reds
#define yytoks  al_toks
#define yylhs   al_yylhs
#define yylen   al_yylen
#define yydefred al_yydefred
#define yydgoto al_yydgoto
#define yysindex al_yysindex
#define yyrindex al_yyrindex
#define yygindex al_yygindex
#define yytable  al_yytable
#define yycheck  al_yycheck
#define yyname   al_yyname
#define yyrule   al_yyrule

I put that in the lexer to make sure the symbols are re-defined. I think
this seems to work ok.

But my 2nd lexer which has a yacc grammar file also i do the same thing
but i started to added in those same defines with different prefixes and
it gives me the errors:

ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1720:
first defined here
ActivationEngine-rulesLexer.o: In function `yyfree':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1924:
multiple definition of `yyfree'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1816:
first defined here
ActivationEngine-rulesLexer.o: In function `yy_delete_buffer':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1468:
multiple definition of `yy_delete_buffer'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1360:
first defined here
ActivationEngine-rulesLexer.o: In function `yypop_buffer_state':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1578:
multiple definition of `yypop_buffer_state'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1470:
first defined here
ActivationEngine-rulesLexer.o: In function `yylex_destroy':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1862:
multiple definition of `yylex_destroy'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1754:
first defined here
ActivationEngine-rulesLexer.o: In function `yyrealloc':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1912:
multiple definition of `yyrealloc'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1804:
first defined here
ActivationEngine-rulesLexer.o: In function `yyalloc':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1907:
multiple definition of `yyalloc'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1799:
first defined here
ActivationEngine-rulesLexer.o: In function `yypush_buffer_state':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1548:
multiple definition of `yypush_buffer_state'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1440:
first defined here
ActivationEngine-rulesLexer.o: In function `yy_switch_to_buffer':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1395:
multiple definition of `yy_switch_to_buffer'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1287:
first defined here
ActivationEngine-rulesLexer.o: In function `yy_scan_buffer':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1646:
multiple definition of `yy_scan_buffer'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1538:
first defined here
ActivationEngine-rulesLexer.o: In function `yy_scan_bytes':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1696:
multiple definition of `yy_scan_bytes'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1588:
first defined here
ActivationEngine-rulesLexer.o: In function `yy_scan_string':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1683:
multiple definition of `yy_scan_string'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1575:
first defined here
ActivationEngine-rulesLexer.o: In function `yy_create_buffer':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1440:
multiple definition of `yy_create_buffer'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1332:
first defined here
ActivationEngine-rulesLexer.o: In function `yyrestart':
/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/rulesLexer.c:1378:
multiple definition of `yyrestart'
ActivationEngine-activationLexer.o:/home/redbrain/workspace/reservoir/a5/wp53/src/trunk/OVF_Activation_Framework/OVF_ActivationEngine/src/activationLexer.c:1

there are more errors but its the same things.. just couldnt copy and
paste it all from cat :P

It would be nice to know whats the best strategy for multiple lexers.
But if it is simple to just have one lexer and multiple grammar files i
could try and work with that again... I tried that before but its not
the nicest solution. For my stuff

But i can write the first lexer manualy again because its only a very
simple parser. But i am no bison/flex guru so i'll ask the experts :)

- -Phil
http://redbrain.o.uk
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAknl1eQACgkQAhcOgIaQQ2EeUQCfVmPEsVKi6O2QMosDKbxHmRSU
2JMAoJKKzwbLak0UYIN3OBAVGO3OdVLL
=Jffd
-----END PGP SIGNATURE-----