Mrthfx

I've already read extending a language with additional keywords and I have found kind of a solution, but I'm not quite sure if it's the right way and if I won't have problems in the future.

The scenario is like this: I have different pieces of code in ruby, Java and a custom one, in a random order (not all ruby code first, then all Java, etc).

Here is a MWE to illustrate:

documentclass[11pt]{report}



usepackage{listings}

usepackage{framed}

usepackage{xcolor}



lstset{ %

  basicstyle=footnotesizettfamily,

  numbers=left,

  numberstyle=tinycolor{gray}ttfamily,

  numbersep=5pt,

  backgroundcolor=color{white},

  showspaces=false,

  showstringspaces=false,

  showtabs=false,

  frame=single,

  rulecolor=color{black},

  captionpos=b,

  keywordstyle=color{blue}bf,

  commentstyle=color{gray},

  stringstyle=color{green},

  keywordstyle={[2]color{red}bf},

}







lstdefinelanguage{story}

{morekeywords={Given,When,Then},

    sensitive=false,

    morekeywords={[2]Scenario},

}



begin{document}

First some ruby code

lstinputlisting[language=Ruby,caption={Ruby}]{ruby_code.rb}



Now some java code

%lstset{language=Java}

%lstset{ morekeywords={[2]@Given,@When,@Then}}

lstinputlisting[language=Java,caption={Java}]{JavaCode.java}



Now some story code

lstinputlisting[language=story,caption={Story}]{story_code.story}

end{document}

I'll put only the java code which is the one troubling and the one I really care:

// JavaCode.java

public class ComportamientoSteps {

    Croupier croupier;



    @Given("una nueva mano")

    public void nuevaMano() {

        croupier = new Croupier();

    }



    @When("el croupier tiene $carta1 y $carta2")

    public void elCroupierTiene(int carta1, int carta2) {

        croupier.agregarCarta(new Carta(carta1));

        croupier.agregarCarta(new Carta(carta2));

    }



    @Then("$valor deberia plantar")

    public void croupierDeberiaPlantar(String valor) {

        boolean debe_pedir = valor.equals("no"); 

        assertThat(croupier.debePedirOtraCarta(), equalTo(debe_pedir));

    }

}

What I'm trying to do is:

1. First, define a common style for al pieces of code: size, colors of keywords and [2]keywords, etc. I want this style for every language.


2. Then define the very simple story language.


3. Lastly, I input the code via lstinputlisting[language=whatever]{file}
   

I want to extend the Java language to interpret @Given, @When and @Then as [2]keywords. In the MWE there is a piece of code commented out, with that piece of code it works (you have to remove the language=Java in the options), but I don't want to do that every time I have to put Java code, I just want to use the lstinputlisting with the language option. Besides, I don't know if setting the language to Java like that won't bring me trouble in future listings.

Listing is powerful tool , more documentation can be found here:The Listings Package.

Instead of setting global settings you should set styles for each individual listings

Flowing code should give you good picture of how to customise listings.

documentclass{article}

usepackage{graphicx} 

usepackage{listings}

usepackage{xcolor}



lstdefinestyle{basic}{  

  basicstyle=footnotesizettfamily,

  numbers=left,

  numberstyle=tinycolor{gray}ttfamily,

  numbersep=5pt,

  backgroundcolor=color{white},

  showspaces=false,

  showstringspaces=false,

  showtabs=false,

  frame=single,

  rulecolor=color{black},

  captionpos=b,

  keywordstyle=color{blue}bf,

  commentstyle=color{gray},

  stringstyle=color{green},

  keywordstyle={[2]color{red}bf},

}





lstdefinelanguage{custom}

{

morekeywords={public, void},

sensitive=false,

morecomment=[l]{//},

morecomment=[s]{/*}{*/},

morestring=[b]",

}



begin{document}



 lstinputlisting[ style=basic, language=Python]{main.java}

 lstinputlisting[ style=basic, language=Java]{main.java}



 lstinputlisting[ style=basic, language=custom]{main.java}





end{document}

Three version of customised listings presented in the code above

they all use same colours for identity of: strings, comments, keywords.

also I showed how to create new language for your need. you can use existed languages for your foundation and add more keywords to it.

[UPDATE]

Here is set of different styles , I personally prefer this one.

documentclass{article}

usepackage{graphicx} 

usepackage{listings}

usepackage{color}

usepackage{accsupp}







definecolor{dkblue}{rgb}{0,0,0.5}

definecolor{comment}{rgb}{1,0,0}

definecolor{mauve}{rgb}{.627,.126,.941}

definecolor{purple}{rgb}{0.5, 0, 0.545098}





lstdefinestyle{java}{

  belowcaptionskip=1baselineskip,

  breakatwhitespace=false,        % sets if automatic breaks should only happen at whitespace

  breaklines=true,                % sets automatic line breaking

  xleftmargin=parindent,

  language=Java,

  tabsize=4, 

  tabsize=4,

  numbers=left,

  showstringspaces=false,

  numberstyle=tinynoncopynumber,

  basicstyle=footnotesizettfamily,

  keywordstyle=bfseriescolor[rgb]{.133,.545,.133},

  commentstyle=itshapecolor{blue},

  stringstyle=color{mauve},

  directivestyle=bfseriescolor{purple},

  frame=single],

  resetmargins=true,

}

    lstdefinestyle{mathlab}{  

  belowcaptionskip=1baselineskip,

  breakatwhitespace=false,        % sets if automatic breaks should only happen at whitespace

  breaklines=true,                % sets automatic line breaking

  xleftmargin=parindent,

  language=C,

  morekeywords={end, elseif},

  comment=[l]%,                              % comments    

  tabsize=4, 

  numberstyle=tinynoncopynumber,

  showstringspaces=false,

  basicstyle=footnotesizettfamily,

  keywordstyle=color[rgb]{0,0,1},

  commentstyle=itshapecolor[rgb]{.133,.545,.133},

  stringstyle=color{mauve},

  directivestyle=bfseriescolor{purple},

  framexleftmargin=3mm,

  frame=single,

}





newcommand{noncopynumber}[1]{%

BeginAccSupp{method=escape,ActualText={}}%

#1%

EndAccSupp{}%

}



begin{document}



 lstinputlisting[caption=Matlab style main code: "main.java", style=mathlab]{main.java}



 lstinputlisting[caption=Matlab style main code: "main.java", style=java]{main.java}





end{document}