Copy javadoc comments to the generated parser

[parrt]

[akejriwal]

Hi Terence,

I am unable to find a way to copy comments in the generated language. Is there a way to achieve this?

[parrt]

I will have to look at the grammar but I might have to make some tweaks to get the comments onto a hidden channel. Then it's a matter of having the code generation templates look into the outputmodel and grab the comments.

[akejriwal]

Hi Terence,

Thanks for your reply. I found help from a blog and managed to capture comments. Below is the code for other people who face such issues:-

private Set<Token> commentToken=new HashSet<Token>();
@Override
public void enterEveryRule(ParserRuleContext ctx) 
{
     int tokPos = ctx.getStart().getTokenIndex();
        List<Token> refChannel = tokens.getHiddenTokensToLeft(tokPos,
            Token.HIDDEN_CHANNEL);

        if(refChannel != null) {
            for(Token refTok : refChannel)
            {
                if(commentToken.add(refTok))
                {   
                    String text = refTok.getText();
                }
            }

        }
}