[antlr-interest] grammar inheritance example
tdknghi <nk.truong at student.qut.edu.au>
nk.truong at student.qut.edu.au
Wed Jan 22 18:03:40 PST 2003
Hi all,
I would like to extends the java.g grammar. I attempt to extend the
grammar with the grammar bellow and here is the error.
<grammar.g>
class MyJavaParser extends JavaRecognizer;
options
{
k = 2;
exportVocab=MyJava;
importVocab=Java;
buildAST = true;
}
gapDeclaration: B_GAP;
class MyJavaLexer extends JavaLexer;
options
{
exportVocab=MyJava;
importVocab=Java;
}
B_GAP : "GAP";
Here is the error messages when you run java antlr.Tool grammar.g
ANTLR Parser Generator Version 2.7.1 1989-2000 jGuru.com
error: grammar JavaLexer not defined
error: grammar JavaRecognizer not defined
Do any of you have any idea what goes wrong?
Thanks.
MM
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