Hi!
All problem solved by reading and applying:
http://tldp.org/HOWTO/Lex-YACC-HOWTO-5.html
Tamas
> Hi!
>
> With no parser.c. Main() is in the .y file, the
> following error occured:
>
> alfa.tab.cpp: In function `int yyparse()':
> alfa.tab.cpp:1097: error: `yylex' undeclared (first
> use thi
Hi!
With no parser.c. Main() is in the .y file, the
following error occured:
alfa.tab.cpp: In function `int yyparse()':
alfa.tab.cpp:1097: error: `yylex' undeclared (first
use this function)
alfa.tab.cpp:1097: error: (Each undeclared identifier
is reported only once
for each function it appear
Hi!
I also have a parser.c file. (sourcehandler)
Should i have to rewrite it to c++ or just link it?
Because of this, which is in the .y file:
vrml_filel_init(f, argv[1]);
it cannot compile to c++. Even if #include
"prog.tab.h"
it cannot see the above function.
I have the bottom files too:
>
Got link problem (i suppose)
so the general way to compile a lex & yacc program is:
1. Generate the lexer
lex my_file.l
2. Generate the parser
yacc -d my_file.y
3. Compile the sources
cc -c lex.yy.c y.tab.cc
4. Link the object files (this is what i think your problem is)
cc -o my_
I'm giving some more tries to generate a C++ parser for a small language,
here it's the result:
http://www.neuralnoise.com/small_backup_2/
it's hevily ripped off by the example calc++, and I really don't know
why I can't get scanner.cc (the file generated from "flex -+
-o scanner.cc scanner.ll")
Hi,
I just made a small parser using flex and bison, to integrate it in a bigger
project,
and it works like a charm; here it is: http://www.neuralnoise.com/small_backup/
.
I'm now having problems generating a C++ parser (I'm currently trying to do it
using
the bison's "-d -S lalr1.cc" and flex'
