I'm new with this jflex and regular expressions I read a lot even though I know I faced the solution in the manual but really I can't understand these ...

I am trying to wirte a regular expression for emails in JFlex. So far I tried with this When I test with an email, the lexer is not matching any em ...

I have these two rules from a jflex code: Bool = true Ident = [:letter:][:letterdigit:]* if I try for example to analyse the word "trueStat", it ge ...

I am making a compiler with Jflex and Bison. Jflex does the lexical analysis. Bison does the parsing. The lexical analysis (in a .l file) is perfect. ...

I am really struggling to use Jflex and Bison together. For example, here's some sample code: https://github.com/valecor95/bison-flex-jflex-examples/ ...

I downloaded jflex by doing brew install jflex everything worked the way it should. But now when I'm trying to make it work with java_cup.runtime.*. ...

I am generating lexical analyzer with JFLEX. I need to find all strings which containing escaped characters using regular expressions. I'm struggling ...

I am new to JFlex and CUP. I am trying to do a simple example, but when I run the parser, it always gives the same error, it does not progress with th ...

I am working on a lexer. I need to identify patterns in BNF and specify them using Regular expressions. I know there are TOKENS e.g. keywords, identif ...

I am writing a lexical analyzer using JFlex. When the word co is matched, we have to ignore what comes after until the end of the line (because it's a ...

I was looking on how to implement block comments in JFlex for custom language support in intellij and found that it can be described as I don't qui ...

Given a positional language like the old IBM RPG, we can have a line such as Where characters Now, given that JFlex is based on RegExp, we would ...

I have the following context-free grammar for a simplified version of C++. When I run it with JFLEX and CUP I get a list of errors like that: I thi ...

I am building a Scanner and can't seem to find a way to identify operators like "if" or "else" using JFlex & Regex. Since JFlex doesn't fully conf ...

In Jflex, how does one extract the input filename? DisplayFilename.jflex: Commands ran desired output: ...

i am writing a compiler for a small language using byacc/j and jflex. i have no problem in finding first error in a given input file. the problem is i ...

Whats is the significance of the prefix yy in lexers? I see methods/fields such as yyline, yycolumn, yytext, e.t.c Is there some historical signific ...

So I'm trying to make a lexical analyzer for scheme and when I run JFlex to convert the lever.flex file I get an error similar to this one for example ...

Is my first time using jflex, I'm following a tutorial i found on the internet in my native language (portuguese), I installed and assembled everythin ...

This is my current error handling function: public void yyerror(String error) { System.err.println("Error: "+ error); } This is the default err ...