[antlr-interest] No literals with two parsers using same TokenTypes

[Olivier Dragon]

Hi,

Using ANTLR 2.5, I have the following problem:

I'm trying to write two parsers that have the same output tree language,
but different input languages. In order to make things easier on myself
I thought of sharing token types by importing the vocabulary from
GrammarA into GrammarB.

My problem is with literals inside the parser. All the tokens defined as
rules in the lexer of GrammarB, as well as tokens defined inside the
tokens{} section of GrammarB are merged with the tokens from GrammarA
properly, except for literal strings inside the parser.

I have the following headers in GrammarB:

class GrammarBParser extends Parser;
options {
    importVocab=LanguageA;
    exportVocab=LanguageB;
}

class GrammarBLexer extends Lexer;
options {
    importVocab=LanguageA;
    exportVocab=LanguageB;
}

And a file called "LanguageATokenTypes.txt" in the same directory as
GrammarB.

Any idea what I'm doing wrong? I could put all the literals in the
tokens{} section as a workaround, but I would rather avoid that if
possible.

Thanks!
-Olivier

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