Jim, I could make that from the C.stg file. I have decided to use char for enums. But may i know, why you want to have the initialization stuff in there. Because, by leaving it to the user, this can provide more flexibility. If you feel that the memory locations have to get cleared, you can do a memset of 0 for the allocated memory. Kindly let me know the reasoning behind the decision..
Gokul. On Mon, Dec 7, 2009 at 12:03 AM, Jim Idle <[email protected]> wrote: > Please search past posts for info on why this is and what to do. You must > use pointers basically. > > Jim > > > On Dec 5, 2009, at 13:42, Gokulakannan Somasundaram <[email protected]> > wrote: > > Just found out from C.stg, the types that are dealt by antlr and it sets > NULL to the rest. i feel that the initialization should not be done like > this and left to the user to make his own initializations, if he needs it. > Or he should be provided with a way to customize the initialization that's > happening. > > Gokul. > > On Sun, Dec 6, 2009 at 2:50 AM, Gokulakannan Somasundaram > <<[email protected]> > [email protected]> wrote: > >> Hi, >> Seems like the C Target initializes unknown types to NULL. I made a >> rule which returns enum value and the code generated by ANTLR C Target is nt >> getting compiled in MSVC. >> >> The code is as follows.. >> >> grammar Test1; >> >> options >> { >> language = C; >> } >> >> @includes >> { >> enum ObjectType >> { >> OBJECT_A >> , OBJECT_B >> , OBJECT_C >> >> , OBJECT_TOTAL >> }; >> } >> >> id_list returns [ObjectType result]: >> a=id { $result = $a.result; } >> (',' b=id { $result = OBJECT_C; } )* >> ; >> >> id returns [ObjectType result]: ID+ '=' ID+ ';' NEWLINE { $result = >> OBJECT_A; } >> | NEWLINE { $result = OBJECT_B; } >> ; >> >> NEWLINE: '\r'? '\n' ; >> >> ID: ('a' .. 'z' | 'A' .. 'Z')+ ; >> >> WS: (' '|'\t'|'\r'|'\n')+ {skip();} ; >> >> >> I actually tried writing a code returning C++ objects (not pointers) and i >> found that ANTLR initializes it to NULL. Later found that it is doing the >> same for enum values also. Is it possible to fix this, so that it works for >> C++ objects also. Like when i return a std::string, it assigns NULL and the >> compiler reports an error. >> >> Thanks, >> Gokul. >> > > > List: <http://www.antlr.org/mailman/listinfo/antlr-interest> > http://www.antlr.org/mailman/listinfo/antlr-interest > Unsubscribe: > <http://www.antlr.org/mailman/options/antlr-interest/your-email-address> > http://www.antlr.org/mailman/options/antlr-interest/your-email-address > > -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.
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