[antlr-interest] Localizing error messages in target javascript

[Paulo Macagnani]

Hi folks,

 

I´m trying to override the getErrorMessage methods in target javascript in order to provide message translation.

 

My .g file looks is shown bellow. The generated .js file seems to be ok, but my InfixExpressionClientLexer is now undefined.

 

Any hints?

 

[]s

 

Paulo

 

 

 

grammar InfixExpressionClient;


options {
 language=JavaScript;
}


@lexer::members {
 @Override
 getErrorMessage : function(e, tokenNames) {
        var msg = null;
        if ( e instanceof org.antlr.runtime.MismatchedTokenException ) {
            msg = "mismatched character "+this.getCharErrorDisplay(e.c)+" expecting "+this.getCharErrorDisplay(e.expecting);
        }
        else if ( e instanceof org.antlr.runtime.NoViableAltException ) {
            msg = "no viable alternative at character "+this.getCharErrorDisplay(e.c);
        }
        else if ( e instanceof org.antlr.runtime.EarlyExitException ) {
            msg = "required (...)+ loop did not match anything at character "+this.getCharErrorDisplay(e.c);
        }
        else if ( e instanceof org.antlr.runtime.MismatchedNotSetException ) {
            msg = "mismatched character "+this.getCharErrorDisplay(e.c)+" expecting set "+e.expecting;
        }
        else if ( e instanceof org.antlr.runtime.MismatchedSetException ) {
            msg = "mismatched character "+this.getCharErrorDisplay(e.c)+" expecting set "+e.expecting;
        }
        else if ( e instanceof org.antlr.runtime.MismatchedRangeException ) {
            msg = "mismatched character "+this.getCharErrorDisplay(e.c)+" expecting set "+
                this.getCharErrorDisplay(e.a)+".."+this.getCharErrorDisplay(e.b);
        }
        else {
            msg = org.antlr.runtime.Lexer.superclass.getErrorMessage.call(this, e, tokenNames);
        }
        return msg;
    },

    getCharErrorDisplay : function(c) {
        var s = c; //String.fromCharCode(c);
        switch ( s ) {
            case org.antlr.runtime.Token.EOF :
                s = "<EOF>";
                break;
            case "\n" :
                s = "\\n";
                break;
            case "\t" :
                s = "\\t";
                break;
            case "\r" :
                s = "\\r";
                break;
        }
        return "'"+s+"'";
    }
}

 

 

expression
 :  logicalExpression;

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