LaTeX forum ⇒ Text Formatting ⇒ listings | Syntax Highlighting for VDHL Topic is solved

[Shellduck]

Hi

My professor won't approve a hand in due to no highlighting in the code (VHDL programing).

I have now spend then entire morning trying to find a package that can do this highlighting, but without results. according to the documentation for the listings package, it should be able to do it, but I have not been able to do it (also found other sources that says that the lstlisting environment doesn't recognize VHDL code.)

Is it hidden very well, not existing or am I just to stupid to find it?

If it is non existing, is there some guide to set up a custom languid with the listings package?

[cgnieder]

Hi Shellduck and welcome to the LaTeX community!

I do not know of any guide but the listings documentation is very comprehensive. It is not too hard to get started.

I have no knowledge whatsoever of VHDL so the following is tailored following the Wikipedia example. Maybe it can be a starting point:

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{beramono}% monospaced font with bold variant

\usepackage{listings}
\lstdefinelanguage{VHDL}{
  morekeywords={
    library,use,all,entity,is,port,in,out,end,architecture,of,
    begin,and
  },
  morecomment=[l]--
}

\usepackage{xcolor}
\colorlet{keyword}{blue!100!black!80}
\colorlet{comment}{green!90!black!90}
\lstdefinestyle{vhdl}{
  language     = VHDL,
  basicstyle   = \ttfamily,
  keywordstyle = \color{keyword}\bfseries,
  commentstyle = \color{comment}
}

\begin{document}

\begin{lstlisting}[style=vhdl]
-- (this is a VHDL comment)
 
-- import std_logic from the IEEE library
library IEEE;
use IEEE.std_logic_1164.all;
 
-- this is the entity
entity ANDGATE is
  port ( 
    I1 : in std_logic;
    I2 : in std_logic;
    O  : out std_logic);
end entity ANDGATE;
 
-- this is the architecture
architecture RTL of ANDGATE is
begin
  O <= I1 and I2;
end architecture RTL;
\end{lstlisting}

\end{document}

vhdl.png (35.11 KiB) Viewed 17808 times

Regards

[Shellduck]

hi cgnieder and thanks for the welcome

This is perfect, and just what I was looking for!:)

Just one question, if I want to make two kinds of keywords, I write:

...
\lstdefinelanguage{VHDL}{
  morekeywords=[a]{
    library,use,all,entity,is,port,in,out,end,architecture,of,
    begin,and
  },
  morekeywords=[b]{
    STD_LOGIC_VECTOR,STD_LOGIC
  },

  morecomment=[l]--
}
\usepackage{xcolor}
\colorlet{keyword1}{blue!100!black!80}
\colorlet{keyword2}{blue!50!black!80}
\colorlet{comment}{green!90!black!90}
\lstdefinestyle{vhdl}{
  language     = VHDL,
  basicstyle   = \ttfamily,
  keywordstyle[a] = \color{keyword1}\bfseries,
  keywordstyle[b] = \color{keyword2}\bfseries,
  commentstyle = \color{comment}
}

right? (dunno if the color code I used is real, but...

EDIT: after a little work around it worked:)

\lstdefinelanguage{VHDL}{
  morekeywords=[1]{
    library,use,all,entity,is,port,in,out,end,architecture,of,
    begin,and,or,Not,downto,ALL
  },
  morekeywords=[2]{
    STD_LOGIC_VECTOR,STD_LOGIC,IEEE,STD_LOGIC_1164,
    NUMERIC_STD,STD_LOGIC_ARITH,STD_LOGIC_UNSIGNED,std_logic_vector,
    std_logic
  },
  morecomment=[l]--
}
\usepackage[usenames,dvipsnames]{xcolor}
\colorlet{keyword}{blue!100!black!80}
\colorlet{STD}{Lavender}
\colorlet{comment}{green!80!black!90}
\lstdefinestyle{vhdl}{
  language     = VHDL,
  basicstyle   = \footnotesize \ttfamily,
  keywordstyle = [1]\color{keyword}\bfseries,
  keywordstyle = [2]\color{STD}\bfseries,
  commentstyle = \color{comment}
  breaklines=true,                % sets automatic line breaking
  tabsize=3		                   % sets default tabsize to 2 spaces
}

[localghost]

The minted package, which uses the Python syntax highlighter Pygments, has native support for VHDL.

\documentclass[11pt]{article}
\usepackage[T1]{fontenc}
\usepackage{minted}
\usepackage{bera}

\begin{document}
  \begin{minted}[gobble=4]{vhdl}
    -- (this is a VHDL comment)

    -- import std_logic from the IEEE library
    library IEEE;
    use IEEE.std_logic_1164.all;

    -- this is the entity
    entity ANDGATE is
      port (
        I1 : in std_logic;
        I2 : in std_logic;
        O  : out std_logic);
    end entity ANDGATE;

    -- this is the architecture
    architecture RTL of ANDGATE is
    begin
      O <= I1 and I2;
    end architecture RTL;
  \end{minted}
\end{document}

For details please refer to the package manual. The package needs Python and Pygments installed. The compiler has to be run with shell escape.

[shrican]

hi cgnieder and thanks for the welcome

This is perfect, and just what I was looking for!:)

Just one question, if I want to make two kinds of keywords, I write:

...
\lstdefinelanguage{VHDL}{
  morekeywords=[a]{
    library,use,all,entity,is,port,in,out,end,architecture,of,
    begin,and
  },
  morekeywords=[b]{
    STD_LOGIC_VECTOR,STD_LOGIC
  },

  morecomment=[l]--
}
\usepackage{xcolor}
\colorlet{keyword1}{blue!100!black!80}
\colorlet{keyword2}{blue!50!black!80}
\colorlet{comment}{green!90!black!90}
\lstdefinestyle{vhdl}{
  language     = VHDL,
  basicstyle   = \ttfamily,
  keywordstyle[a] = \color{keyword1}\bfseries,
  keywordstyle[b] = \color{keyword2}\bfseries,
  commentstyle = \color{comment}
}

right? (dunno if the color code I used is real, but...

EDIT: after a little work around it worked:)

\lstdefinelanguage{VHDL}{
  morekeywords=[1]{
    library,use,all,entity,is,port,in,out,end,architecture,of,
    begin,and,or,Not,downto,ALL
  },
  morekeywords=[2]{
    STD_LOGIC_VECTOR,STD_LOGIC,IEEE,STD_LOGIC_1164,
    NUMERIC_STD,STD_LOGIC_ARITH,STD_LOGIC_UNSIGNED,std_logic_vector,
    std_logic
  },
  morecomment=[l]--
}
\usepackage[usenames,dvipsnames]{xcolor}
\colorlet{keyword}{blue!100!black!80}
\colorlet{STD}{Lavender}
\colorlet{comment}{green!80!black!90}
\lstdefinestyle{vhdl}{
  language     = VHDL,
  basicstyle   = \footnotesize \ttfamily,
  keywordstyle = [1]\color{keyword}\bfseries,
  keywordstyle = [2]\color{STD}\bfseries,
  commentstyle = \color{comment}
  breaklines=true,                % sets automatic line breaking
  tabsize=3		                   % sets default tabsize to 2 spaces
}

This is great! I'm going to shamelessly copy this into my project! Thank you, Shellduck!