File modules/editor/codemirror/mode/ebnf/index.html

Last commit: Sun Dec 17 01:14:09 2017 +0100	Jan Dankert	Integration eines weiteren Code-Editors: Codemirror. Demnächst müssen wir hier mal aufräumen und andere Editoren rauswerfen.


     1 <!doctype html>
     2 <html>
     3   <head>
     4     <title>CodeMirror: EBNF Mode</title>
     5     <meta charset="utf-8"/>
     6     <link rel=stylesheet href="../../doc/docs.css">
     7 
     8     <link rel="stylesheet" href="../../lib/codemirror.css">
     9     <script src="../../lib/codemirror.js"></script>
    10     <script src="../javascript/javascript.js"></script>
    11     <script src="ebnf.js"></script>
    12     <style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
    13   </head>
    14   <body>
    15     <div id=nav>
    16       <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
    17 
    18       <ul>
    19         <li><a href="../../index.html">Home</a>
    20         <li><a href="../../doc/manual.html">Manual</a>
    21         <li><a href="https://github.com/codemirror/codemirror">Code</a>
    22       </ul>
    23       <ul>
    24         <li><a href="../index.html">Language modes</a>
    25         <li><a class=active href="#">EBNF Mode</a>
    26       </ul>
    27     </div>
    28 
    29     <article>
    30       <h2>EBNF Mode (bracesMode setting = "javascript")</h2>
    31       <form><textarea id="code" name="code">
    32 /* description: Parses end executes mathematical expressions. */
    33 
    34 /* lexical grammar */
    35 %lex
    36 
    37 %%
    38 \s+                   /* skip whitespace */
    39 [0-9]+("."[0-9]+)?\b  return 'NUMBER';
    40 "*"                   return '*';
    41 "/"                   return '/';
    42 "-"                   return '-';
    43 "+"                   return '+';
    44 "^"                   return '^';
    45 "("                   return '(';
    46 ")"                   return ')';
    47 "PI"                  return 'PI';
    48 "E"                   return 'E';
    49 &lt;&lt;EOF&gt;&gt;               return 'EOF';
    50 
    51 /lex
    52 
    53 /* operator associations and precedence */
    54 
    55 %left '+' '-'
    56 %left '*' '/'
    57 %left '^'
    58 %left UMINUS
    59 
    60 %start expressions
    61 
    62 %% /* language grammar */
    63 
    64 expressions
    65 : e EOF
    66 {print($1); return $1;}
    67 ;
    68 
    69 e
    70 : e '+' e
    71 {$$ = $1+$3;}
    72 | e '-' e
    73 {$$ = $1-$3;}
    74 | e '*' e
    75 {$$ = $1*$3;}
    76 | e '/' e
    77 {$$ = $1/$3;}
    78 | e '^' e
    79 {$$ = Math.pow($1, $3);}
    80 | '-' e %prec UMINUS
    81 {$$ = -$2;}
    82 | '(' e ')'
    83 {$$ = $2;}
    84 | NUMBER
    85 {$$ = Number(yytext);}
    86 | E
    87 {$$ = Math.E;}
    88 | PI
    89 {$$ = Math.PI;}
    90 ;</textarea></form>
    91       <script>
    92         var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
    93           mode: {name: "ebnf"},
    94           lineNumbers: true,
    95           bracesMode: 'javascript'
    96         });
    97       </script>
    98       <h3>The EBNF Mode</h3>
    99       <p> Created by <a href="https://github.com/robertleeplummerjr">Robert Plummer</a></p>
   100     </article>
   101   </body>
   102 </html>



Download modules/editor/codemirror/mode/ebnf/index.html


History
Sun, 17 Dec 2017 01:14:09 +0100	Jan Dankert	Integration eines weiteren Code-Editors: Codemirror. Demnächst müssen wir hier mal aufräumen und andere Editoren rauswerfen.