[antlr-interest] Build path for ANTLRWorks, grammar issues, lexer members
Ruth Karl
ruth.karl at gmx.de
Tue May 29 14:42:49 PDT 2007
Hello again,
I am still confronting several problems with ANTLRWorks - and with my
grammar, too...
One step after the other:
- when generating code via the debug icon (this time with Java as target
language), I get a bunch of exceptions - even though the generated code
is ok (eclipse at least does not bother - after setting the project
build path). The exceptions I get to see in ANTLRWorks console all seem
to be orignated by missing antlr-libraries:
[22:47:45]
D:\workspace_eclipse_3.2\JSP_Parsing\antlr\JSPParser.java:64: cannot
find symbol
[22:47:45] symbol : constructor DebugParser(antlr.TokenStream)
[22:47:45] location: class org.antlr.runtime.debug.DebugParser
[22:47:45] super(input);
[22:47:45]
but I can not see where to set the corresponding paths there....
- Next problem is in my grammar. I have the following rules:
jsp : oroot (content)* croot EOF
| content* EOF
;
oroot : OPENTAG 'jsp:root' (rootattr)* CLOSETAG
;
OPENTAG : '<' { tagMode = true; }
;
etc, but giving the interpreter an input starting with
<jsp:root xmlns:jsp="xxx">
it will generate immediately a NoViableAltException... I would expect
that at least '<' and 'jsp:root' be recognized - am I that wrong???
- if I use the same semantic predicate for lexer and for parser rules in
my grammar: do I really have to state it twice (@member und
@lexer::member)? And if so, will they ever be coordinated? Like, when I
toggle the value of a boolean in a lexer rule - will it be toggled for
the parser, too? Or how should I do?
Thank you lots again for your help,
Ruth
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