Hi, just a reminder in case you folks haven't used the TreeWizard that it's
useful in some situations. For example, when creating the implicitly generated
lexers pulled from combined grammars, I need to build lexer rules for keywords
you reference in the grammar. Once I have a wizard
TreeWizard wiz = new TreeWizard(adaptor,ANTLRParser.tokenNames);
Then I can create trees without having to do all of the manual "add child"
stuff:
GrammarAST litRule = (GrammarAST)
wiz.create("(RULE ID["+rname+"] (BLOCK (ALT
STRING_LITERAL["+lit+"])))");
If you have a tree and you want to pull out information from it, you can use a
scanf like method:
Map nodes = new HashMap();
boolean isLitRule =
wiz.parse(r, "(RULE %name:ID (BLOCK (ALT %lit:STRING_LITERAL)))",
nodes);
then get the node pointers from the map you pass in:
GrammarAST litNode = (GrammarAST)nodes.get("lit");
GrammarAST nameNode = (GrammarAST)nodes.get("name");
It's really making my life much easier.
Ter
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