[antlr-interest] Re: Please Help: Simple C Parsing Problem

[Monty Zukowski]

Exactly.

Monty

On Jul 25, 2004, at 3:08 AM, lgcraymer wrote:

> Monty will probably have something to say, but if I remember
> correctly, the GNU C grammar has no preprocessor support.  You need to
> run cpp over the input file before sending it through the C processor.
>
> --Loring
>
>
> --- In antlr-interest at yahoogroups.com, "JonFroehlich" <jfroehli at i...>
> wrote:
>> I'm using the John Mitchell and Monty Zukowski GNU C Grammar from
>> antlr.org. I can run the test input .c files fine; however, when I
>> create my own simple tests, the parser fails.
>>
>> For example, testfile.c contains two lines
>>
>> #include <stdio.h>
>> FILE *filePtr;
>>
>> When I parse this, I get the following error:
>>
>> ANTLR Parsing Error: line 2:26: unexpected token: * token name:STAR
>> line 2:26: unexpected token: *
>> 	at GnuCParser.initDecl(GnuCParser.java:3454)
>> 	at GnuCParser.initDeclList(GnuCParser.java:1107)
>> 	at GnuCParser.typelessDeclaration(GnuCParser.java:832)
>> 	at GnuCParser.externalDef(GnuCParser.java:496)
>> 	at GnuCParser.externalList(GnuCParser.java:233)
>> 	at GnuCParser.translationUnit(GnuCParser.java:193)
>> 	at Test.main(Test.java:55)
>>
>>
>> So, I realize the issue revolves around the notion of "typeless
>> declaration." E.g. if we change testfile.c to read the following,
>> there is no problem.
>>
>> #include <stdio.h>
>> int *filePtr;
>>
>> How do I change the grammar file (if this is even necessary) to be
>> able to detect new types so that a non-primitive type variable
>> declaration, like FILE, is treated the same way as an int
>> declaration.  This seems like such an easy thing but unfortunately I
>> can't figure it out.
>>
>> j
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>



 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/antlr-interest/

<*> To unsubscribe from this group, send an email to:
    antlr-interest-unsubscribe at yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/