Listings Swift config

swift.tex

\lstdefinelanguage{swift}
{
  morekeywords={
    func,if,then,else,for,in,while,do,switch,case,default,where,break,continue,fallthrough,return,
    typealias,struct,class,super,enum,protocol,var,func,let,get,set,willSet,didSet,inout,init,deinit,extension,
    subscript,prefix,operator,infix,postfix,precedence,associativity,left,right,none,convenience,dynamic,
    final,lazy,mutating,nonmutating,optional,override,required,static,unowned,safe,weak,internal,
    private,public,is,as,self,unsafe,dynamicType,true,false,nil,Type,Protocol,import,@IBOutlet,@IBAction, guard
  },
  morekeywords=[2]{Double,Int,Float,Bool,String},
  morecomment=[l]{//}, % l is for line comment
  morecomment=[s]{/*}{*/}, % s is for start and end delimiter
  morestring=[b]" % defines that strings are enclosed in double quotes
}

\definecolor{keyword}{HTML}{BA2CA3}
\definecolor{string}{HTML}{D12F1B}
\definecolor{comment}{HTML}{008400}

\definecolor{classname}{HTML}{663399}
\definecolor{numbers}{HTML}{0000CC}

\newcommand{\ProcessDigit}[1]
{%
	\ifnum\lst@mode=\lst@Pmode\relax%
	{\digitstyle #1}%
	\else
	#1%
	\fi
}
\newcommand*{\FormatDigit}[1]{
	\textcolor{numbers}{#1}
}
\lstset{
  language=swift,
  basicstyle=\ttfamily,
  showstringspaces=false, % lets spaces in strings appear as real spaces
  columns=fixed,
  breaklines=true,
  aboveskip=20pt,
  belowskip=10pt,
  %numbers=left,
  frame=top,
  frame=bottom,
  captionpos=b,
  keepspaces=true,
  keywordstyle=\color{keyword},
  keywordstyle=[1]{\color{keyword}},
  keywordstyle=[2]{\color{classname}},
  stringstyle=\color{string},
  commentstyle=\color{comment}}
  \lstset{literate=
  *{0}{{{\color{numbers}0}}}1
  {1}{{{\color{numbers}1}}}1
  {2}{{{\color{numbers}2}}}1
  {3}{{{\color{numbers}3}}}1
  {4}{{{\color{numbers}4}}}1
  {5}{{{\color{numbers}5}}}1
  {6}{{{\color{numbers}6}}}1
  {7}{{{\color{numbers}7}}}1
  {8}{{{\color{numbers}8}}}1
  {9}{{{\color{numbers}9}}}1
  {.0}{{\FormatDigit{.0}}}{2}% Following is to ensure that only periods
  {.1}{{\FormatDigit{.1}}}{2}% followed by a digit are changed.
  {.2}{{\FormatDigit{.2}}}{2}%
  {.3}{{\FormatDigit{.3}}}{2}%
  {.4}{{\FormatDigit{.4}}}{2}%
  {.5}{{\FormatDigit{.5}}}{2}%
  {.6}{{\FormatDigit{.6}}}{2}%
  {.7}{{\FormatDigit{.7}}}{2}%
  {.8}{{\FormatDigit{.8}}}{2}%
  {.9}{{\FormatDigit{.9}}}{2}%
}

Adds Xcode-style colors to integer and decimal numbers.