contrib/pep8analysis/www/index.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4         <title>Pep/8 Analysis</title>
   5
   6     <meta charset="utf-8">
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  14         <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/codemirror.css">
  15         <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/codemirror.min.js"></script>
  16         <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/mode/z80/z80.js"></script>
  17
  18         <script>
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  23
  24                 ga('create', 'UA-574578-5', 'xymus.net');
  25                 ga('send', 'pageview');
  26
  27                 // Both Viz and Pep8 use emscripten
  28                 // We put aside the module of each program and bring it back before each use
  29                 var VizModule = null
  30                 $(document).ready(function() {
  31                         // Report full loading
  32                         $("#loading").hide()
  33                         $("#analyze").prop('disabled', false)
  34
  35                 });
  36
  37                 function exec() {
  38                         $("#working").show()
  39                         // Clean output console
  40                         $("#console").text("")
  41
  42                         // Get code
  43                         var input = editor.getValue()
  44
  45                         // Update GA stats
  46                         ga('trackEvent', 'Action', 'Analyze')
  47
  48                         // Invoke the full Nit program
  49                         Module = Pep8Module
  50                         try {
  51                                 ret = Module['callMain']([input])
  52                         } catch(e) {
  53                                 console.debug("Tool invocation failed, with:\n" + $("#console").text() + "\n" + e )
  54                                 ga('trackEvent', 'Crash', 'Analysis', $("#console").text())
  55                                 $("#fatal-error").show()
  56                                 $("#analyze").prop('disabled', true)
  57                         }
  58
  59                         // Show and set color of output console
  60                         $("#consolePanel").removeClass("panel-success panel-warning panel-danger")
  61                         var analysis = $("#console").text();
  62                         if (analysis.indexOf("Error") >= 0) {
  63                                 $("#consolePanel").addClass("panel-danger")
  64                                 ga('trackEvent', 'Result', 'Error')
  65                         }
  66                         else if (analysis.indexOf("Warning") >= 0) {
  67                                 $("#consolePanel").addClass("panel-warning")
  68                                 ga('trackEvent', 'Result', 'Warning')
  69                         }
  70                         else {
  71                                 $("#consolePanel").addClass("panel-success")
  72                                 ga('trackEvent', 'Result', 'Success')
  73                         }
  74                         $("#working").hide()
  75                         $("#consolePanel").show()
  76                 }
  77
  78                 function load(file) {
  79                         // Load a sample program
  80                         $.get('samples/' + file, function(data){
  81                                 editor.setValue(data)
  82                         })
  83                 }
  84
  85                 function show_graph(source) {
  86                         Module = VizModule
  87                         var res = Viz(source, "svg", "dot")
  88                         VizModule = Module
  89                         $("#graph").html(res)
  90                 }
  91         </script>
  92 </head>
  93 <body>
  94
  95 <nav class="navbar navbar-default" role="navigation">
  96   <div class="container-fluid">
  97     <div class="navbar-header">
  98       <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
  99         <span class="sr-only">Toggle navigation</span>
 100                 <span class="icon-bar"></span>
 101                 <span class="icon-bar"></span>
 102                 <span class="icon-bar"></span>
 103       </button>
 104       <a class="navbar-brand">Pep/8 Analysis</a>
 105     </div>
 106
 107     <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
 108       <ul class="nav navbar-nav">
 109         <li class="active"><a>Web interface</a></li>
 110         <li><a href="https://github.com/privat/nit/tree/master/contrib/pep8analysis/">Tool source and manual</a></li>
 111       </ul>
 112       <ul class="nav navbar-nav navbar-right">
 113         <li><a href="http://nitlanguage.org/">nitlanguage.org</a></li>
 114         <li><a href="https://code.google.com/p/pep8-1/">Pep/8 project</a></li>
 115       </ul>
 116     </div>
 117   </div>
 118 </nav>
 119
 120 <div class="container-fluid">
 121         <div class="alert alert-warning" id="loading">Loading the tool... This may take some time.</div>
 122         <div class="alert alert-danger" id="fatal-error" style="display: none;">
 123                 <h2>The JavaScript tool crashed</h2>
 124                 <p>Please refresh the page to try again, or use Firefox. An error report has been sent to the developer</p>
 125         </div>
 126
 127         <div class="row">
 128           <div class="col-sm-12 col-lg-6">
 129                 <div class="panel panel-default" id="panelIntro">
 130                         <div class="panel-heading">Description and Usage
 131                                 <button type="button" class="close" onClick="$('#panelIntro').hide()" aria-hidden="true">&times;</button>
 132                         </div>
 133                         <div class="panel-body" id="code-panel">
 134                                 <p>This tools finds strange behavior in Pep/8 programs by exploring all detectable execution paths.</p>
 135                                 <p>Upon analyzing a program, this tool reports dead code blocks and data within the execution path. It also detects wrongful use of data such as accessing uninitialized memory, printing a word and reading code.</p>
 136                                 <p><strong>To use:</strong> copy-paste your code in the source code block and launch the analysis using the <em>Analyze program</em> button.</p>
 137                         </div>
 138                 </div>
 139
 140                 <div class="panel panel-default">
 141                         <div class="panel-heading">Pep/8 Source Code</div>
 142                         <div class="panel-body" id="code-panel">
 143                                 <textarea id="listing"></textarea>
 144                                 <script>
 145                                         var editor = CodeMirror.fromTextArea(listing, {
 146                                                 lineNumbers: true,
 147                                                 mode: "z80"
 148                                         });
 149                                         editor.setSize("100%", 500);
 150                                 </script>
 151
 152                                 <div class="btn-group">
 153                                   <button type="button" class="btn btn-default" id="analyze" onclick="exec();" disabled>Analyze program</button>
 154                                   <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
 155                                          <span class="glyphicon glyphicon-folder-open"></span>
 156                                         Load sample program
 157                                         <span class="caret"></span>
 158                                   </button>
 159                                   <ul class="dropdown-menu">
 160                                         <li><a onclick="load('02-fibo.pep')">fibo.pep - clean program </a></li>
 161                                         <li><a onclick="load('06-calc-non-pur.pep');">calc-non-pur.pep - self rewriting program </a></li>
 162                                         <li><a onclick="load('types.pep');"/>types.pep - strange data manipulation </a></li>
 163                                         <li><a onclick="load('directive-in-code.pep');">directive-in-code.pep - mixed directives and instructions</a></li>
 164                                   </ul>
 165                                 </div>
 166                         </div>
 167                 </div>
 168           </div>
 169
 170           <div class="clearfix visible-xs"></div>
 171           <div class="col-sm-12 col-lg-6">
 172                 <div class="alert alert-warning" id="working" style="display: none;">The tool is evaluating all possible execution paths... This may take some time.</div>
 173                 <div class="panel" id="consolePanel" style="display: none;">
 174                         <div class="panel-heading">Analysis Result</div>
 175                         <div class="panel-body">
 176                                 <samp id="console"></samp>
 177                                 <button type="button" class="btn btn-default" onclick="$('#panelGraph').show();$('#panelGraphExp').show();">
 178                                         Show control flow graph</button>
 179                                 <em class="pull-right" id="panelGraphExp" style="display: none;">The graph is at the bottom of the page...</em>
 180                         </div>
 181                 </div>
 182           </div>
 183
 184           <div class="col-sm-12 col-lg-6">
 185                 <div class="panel panel-default" id="panelRef">
 186                         <div class="panel-heading">Output Documentation
 187                                 <button type="button" class="close" onClick="$('#panelRef').hide()" aria-hidden="true">&times;</button>
 188                         </div>
 189                         <div class="panel-body" id="code-panel">
 190                                 <h4>Line and memory references</h4>
 191                                 <p>Shorthand are used in the error messages, some refer directly to the line numbers others to the address in the memory of the running program.</p>
 192                                 <table class="table table-striped">
 193                                 <tr>
 194                                         <th>Shorthand</th>
 195                                         <th>Description</th>
 196                                 </tr><tr>
 197                                         <td>web:5</td>
 198                                         <td>Source line 5</td>
 199                                 </tr><tr>
 200                                         <td>L8</td>
 201                                         <td>Source line 8</td>
 202                                 </tr><tr>
 203                                         <td>rA, rX</td>
 204                                         <td>Registers A, X</td>
 205                                 </tr><tr>
 206                                         <td>m24</td>
 207                                         <td>Memory at address 24 (bytes)</td>
 208                                 </tr><tr>
 209                                         <td>instr@m24</td>
 210                                         <td>Intruction at address 24 (bytes). Usually, this would be the (24/4+1=) 7th instruction, if there is no data blocks. And the 7th line if there is no data blocks or comments.</td>
 211                                 </tr>
 212                                 </table>
 213
 214                                 <h4>Common errors and warnings</h4>
 215
 216                                 <p>Note that the tool reports <em>possible</em> errors and strange behaviors. For an advanced or expert user, it may raise errors on correct code.</p>
 217
 218                                 <table class="table table-striped">
 219                                 <tr>
 220                                         <th>Error</th>
 221                                         <th>Meaning</th>
 222                                 </tr><tr>
 223                                         <td>... the CFG may be wrong</td>
 224                                         <td>The program structure is too complex to analyze. This happens when jumping to dynamic addresses and when using switch statements.</td>
 225                                 </tr><tr>
 226                                         <td>unreachable instructions</td>
 227                                         <td>There's dead code.</td>
 228                                 </tr><tr>
 229                                         <td>data in program flow</td>
 230                                         <td>The program may execute raw data. There's probably a <code>BR</code> missing.</td>
 231                                 </tr><tr>
 232                                         <td>overwriting code at...</td>
 233                                         <td>An instruction writes over an existing instruction (probably your code).</td>
 234                                 </tr><tr>
 235                                         <td>expected "type" in "address", got "something"</td>
 236                                         <td>An instruction uses data with an unexepected type. It may be a <code>CHARO</code> using something other than a char. Or a copy of uninitialized data over an initialized word.<br>
 237                                         </td>
 238                                 </tr>
 239                                 </table>
 240                         </div>
 241                 </div>
 242           </div>
 243         </div>
 244
 245           <div class="col-sm-12 col-lg-12">
 246                 <div class="panel panel-default" id="panelGraph" style="display: none;">
 247                         <div class="panel-heading">Control Flow Graph (CFG)
 248                                 <button type="button" class="close" onClick="$('#panelGraph').hide()" aria-hidden="true">&times;</button>
 249                         </div>
 250                         <div class="panel-body">
 251                                 <div id="graph"></div>
 252                         </div>
 253                 </div>
 254           </div>
 255
 256         <script>
 257                 var Module = {
 258                         'print': function(text) {
 259                                 $("#console").append(text + "<br>")
 260                         },
 261                         'noInitialRun': true,
 262                         'TOTAL_MEMORY': 512000000
 263                 }
 264         </script>
 265         <script src="pep8analysis.js"></script>
 266         <script>Pep8Module = Module</script>
 267         <script src="viz.js"></script>
 268 </div>
 269
 270 </body>
 271 </html>