It would be nice if YYABORT, YYERROR, and YYACCEPT were all implemented as
exception throws, instead of gotos. Then you could throw them deep in your AST
class and still have Bison do the right thing. Then Bison could catch all other
exceptions, clean up, and rethrow the non-Bison exception up t
Le 24 mai 2011 à 20:32, Sergey Klimkin a écrit :
> Hi!
Hi!
> Trying to find information about C++ exceptions in semantic actions, with no
> results.
> Is there any Bison %Decl which allows to move parse stack outside yyparse(),
> to destroy a stack values after an exception was thrown within se
[Please keep the cc to the help-bison list, so others know.]
On 26 May 2011, at 13:03, John P. Hartmann wrote:
> Well, I did forget, but in this case maybe we do not confuse the children.
>
> At one point bison picked up a bug in one of the M4 macros. It was
> not easy to spot, and it took a wh
[Please keep the cc to the help-bison list, so others know.]
On 26 May 2011, at 11:16, John P. Hartmann wrote:
> The M4 manual by itself is of little use, as all macros are redefined.
It says how to redefine them, so advanced users that need to know how it work,
should consult it.
It is otherw
On 26 May 2011, at 07:35, Sergey Klimkin wrote:
> I guess it might be helpful, I can not claim yet : )
> there is %initial-action declaration and the %final-action may help,
> but rhs symbols will not be discarded.
>
> %initial-action
> {
> try {
> }
>
> %final-action
> {
>}
>catch (std:
I guess it might be helpful, I can not claim yet : )
there is %initial-action declaration and the %final-action may help,
but rhs symbols will not be discarded.
%initial-action
{
try {
}
%final-action
{
}
catch (std::exception &)
{
yyerror(...);
YYABORT;
}
}
into some se
On 24 May 2011, at 20:32, Sergey Klimkin wrote:
> Trying to find information about C++ exceptions in semantic actions, with no
> results.
> Is there any Bison %Decl which allows to move parse stack outside yyparse(),
> to destroy a stack values after an exception was thrown within semantic
> actio
Hi!
Trying to find information about C++ exceptions in semantic actions, with no
results.
Is there any Bison %Decl which allows to move parse stack outside yyparse(),
to destroy a stack values after an exception was thrown within semantic
action!?
something like:
yyparse_stack my_stack;
try
{
Dear All,
it would certainly help if the C++ generated parser would allocate the stack
using std::vector so that constructors and destructors are automatically called.
And this would also make certain that the parser stack is only limited by the
amount of memory.
This also would obsolete th
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_
On 13 Dec 2006, at 11:33, Evan Lavelle wrote:
Once upon the time, Bison had an informal support for the C-parser
to be compiled as C++, but this was dropped, being too difficult
to maintain. Instead, a separate C++ skeleton was developed.
So, for C++, it is best to use the C++ skeleton file.
Hans Aberg wrote:
Once upon the time, Bison had an informal support for the C-parser to be
compiled as C++, but this was dropped, being too difficult to maintain.
Instead, a separate C++ skeleton was developed.
So, for C++, it is best to use the C++ skeleton file.
I have a lot of C++ code i
On 13 Dec 2006, at 01:11, Satya wrote:
Putting the in the .y file would not suffice, as those functions need
to be put in a file compiled by the C++ associated C-compiler;
Well, when Bison generates an xyz.tab. c file, it can be compiled
by a C++ compiler. Thats the idea.
Once upon the time
Putting the in the .y file would not suffice, as those functions need
to be put in a file compiled by the C++ associated C-compiler;
Well, when Bison generates an xyz.tab. c file, it can be compiled by a C++
compiler. Thats the idea.
one
cannot then use C++ containers. If the C-parser is comp
On 13 Dec 2006, at 00:09, Satya wrote:
No, you dont need to use the C++ skeleton. Just put an extern "C"
declaration at the beggining of your parser file (.y file) e.g.,
extern "C"
{
int yyparse ( void );
int yylex ( void );
int yywrap ();
void yyerror ( char* );
}
Putting the
No, you dont need to use the C++ skeleton. Just put an extern "C"
declaration at the beggining of your parser file (.y file) e.g.,
extern "C"
{
int yyparse ( void );
int yylex ( void );
int yywrap ();
void yyerror ( char* );
}
satya.
--
Work expands to fill the time available for
Hello
i want to write a parser with bison using some containers from STL but i
don't need an oriented objet parser : yyparse() is sufficient for me !
Have i to use skeleton and all the C++ stuff of bison manual ?
--
Cordialement, Michel Meynard.
Michel
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'
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