[antlr-interest] Parsing a grammar file 2.7.5
C T
giarcmirt at gmail.com
Wed Mar 15 11:56:16 PST 2006
Hi,
Using 2.7.5. I'm trying to parse a grammar file I created using the
following code:
FileInputStream fos = new FileInputStream(new File(filename));
ANTLRLexer lexer = new ANTLRLexer(fos);
ANTLRParser parser = new ANTLRParser(lexer);
parser.grammar();
AST ast = parser.getAST();
DumpASTVisitor visitor = new DumpASTVisitor();
visitor.visit(ast);
When I do this I get a Null Pointer Exception. Looks like this constructor:
public ANTLRParser(
TokenBuffer tokenBuf,
ANTLRGrammarParseBehavior behavior_,
Tool tool_
)
it not being instantiated, and so the ANTLRGrammarParseBehavior behavior
object remains null. Should I construct the ANTLRParser class differently,
or am I doing something else wrong?
Thanks in advance,
Torrance
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.antlr.org/pipermail/antlr-interest/attachments/20060315/d4b98224/attachment.html
More information about the antlr-interest
mailing list