Question

I want to make a simple JSP parser by using Treetop. Now, I have the following problem:

My basic grammar for starting is:

grammar Jspgrammar
    rule jspToken
         <% 
    end

    rule jspPageToken
        jspToken  @page  
    end
end

jspToken should match <% while jspPageToken should match <%@page

When I try this in irb:

   load  jspgrammar.rb 
   parser=JspgrammarParser.new
   tree=parser.parse("<%")
   => SyntaxNode offset=0, "<%"

But when I try

   tree=parser.parse("<%@page")
   => nil

What am I missing?

Answer 1

see: