contrib/pep8analysis/www/index.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4         <title>Pep/8 Analysis</title>
   5
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  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                         // Clean output console
  39                         $("#console").text("")
  40
  41                         // Get code
  42                         var input = editor.getValue()
  43
  44                         // Invoke the full Nit program
  45                         Module = Pep8Module
  46                 ret = Module['callMain']([input])
  47
  48                         // Shot and set color of output console
  49                         $("#consolePanel").removeClass("panel-success panel-warning panel-danger")
  50                         $("#consolePanel").show()
  51                         var analysis = $("#consolePanel").text();
  52                         if (analysis.indexOf("Error") >= 0)
  53                                 $("#consolePanel").addClass("panel-danger")
  54                         else if (analysis.indexOf("Warning") >= 0)
  55                                 $("#consolePanel").addClass("panel-warning")
  56                         else
  57                                 $("#consolePanel").addClass("panel-success")
  58                 }
  59
  60                 function load(file) {
  61                         // Load a sample program
  62                         $.get('samples/' + file, function(data){
  63                                 editor.setValue(data)
  64                         })
  65                 }
  66
  67                 function show_graph(source) {
  68                         Module = VizModule
  69                         var res = Viz(source, "svg", "dot")
  70                         VizModule = Module
  71                         $("#graph").html(res)
  72                 }
  73         </script>
  74 </head>
  75 <body>
  76
  77 <nav class="navbar navbar-default" role="navigation">
  78   <div class="container-fluid">
  79     <div class="navbar-header">
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  82                 <span class="icon-bar"></span>
  83                 <span class="icon-bar"></span>
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  85       </button>
  86       <a class="navbar-brand">Pep/8 Analysis</a>
  87     </div>
  88
  89     <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
  90       <ul class="nav navbar-nav">
  91         <li class="active"><a>Web interface</a></li>
  92         <li><a href="https://github.com/privat/nit/tree/master/contrib/pep8analysis/">Tool source and manual</a></li>
  93       </ul>
  94       <ul class="nav navbar-nav navbar-right">
  95         <li><a href="http://nitlanguage.org/">nitlanguage.org</a></li>
  96         <li><a href="https://code.google.com/p/pep8-1/">Pep/8 project</a></li>
  97       </ul>
  98     </div>
  99   </div>
 100 </nav>
 101
 102 <div class="container-fluid">
 103         <div class="alert alert-warning" id="loading">Loading the tool... This may take some time.</div>
 104
 105         <div class="row">
 106           <div class="col-sm-12 col-lg-6">
 107                 <div class="panel panel-default" id="panelIntro">
 108                         <div class="panel-heading">Description and Usage
 109                                 <button type="button" class="close" onClick="$('#panelIntro').hide()" aria-hidden="true">&times;</button>
 110                         </div>
 111                         <div class="panel-body" id="code-panel">
 112                                 <p>This tools finds strange behavior in Pep/8 programs by exploring all detectable execution paths.</p>
 113                                 <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>
 114                                 <p><strong>To use:</strong> copy-paste your code in the source code block and launch the analysis using the <em>Analyze</em> button.</p>
 115                         </div>
 116                 </div>
 117
 118                 <div class="panel panel-default">
 119                         <div class="panel-heading">Pep/8 Source Code</div>
 120                         <div class="panel-body" id="code-panel">
 121                                 <textarea id="listing"></textarea>
 122                                 <script>
 123                                         var editor = CodeMirror.fromTextArea(listing, {
 124                                                 lineNumbers: true,
 125                                                 mode: "z80"
 126                                         });
 127                                         editor.setSize("100%", 500);
 128                                 </script>
 129
 130                                 <div class="btn-group">
 131                                   <button type="button" class="btn btn-default" id="analyze" onclick="exec();" disabled>Analyze program</button>
 132                                   <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
 133                                          <span class="glyphicon glyphicon-folder-open"></span>
 134                                         Load sample program
 135                                         <span class="caret"></span>
 136                                   </button>
 137                                   <ul class="dropdown-menu">
 138                                         <li><a onclick="load('02-fibo.pep')">fibo.pep - clean program </a></li>
 139                                         <li><a onclick="load('06-calc-non-pur.pep');">calc-non-pur.pep - self rewriting program </a></li>
 140                                         <li><a onclick="load('types.pep');"/>types.pep - strange data manipulation </a></li>
 141                                         <li><a onclick="load('directive-in-code.pep');">directive-in-code.pep - mixed directives and instructions</a></li>
 142                                   </ul>
 143                                 </div>
 144                         </div>
 145                 </div>
 146           </div>
 147
 148           <div class="clearfix visible-xs"></div>
 149           <div class="col-sm-12 col-lg-6">
 150                 <div class="panel" id="consolePanel" style="display: none;">
 151                         <div class="panel-heading">Analysis Result</div>
 152                         <div class="panel-body">
 153                                 <samp id="console"></samp>
 154                                 <button type="button" class="btn btn-default" onclick="$('#panelGraph').show();$('#panelGraphExp').show();">
 155                                         Show control flow graph</button>
 156                                 <em class="pull-right" id="panelGraphExp" style="display: none;">The graph is at the bottom of the page...</em>
 157                         </div>
 158                 </div>
 159           </div>
 160
 161           <div class="col-sm-12 col-lg-6">
 162                 <div class="panel panel-default" id="panelRef">
 163                         <div class="panel-heading">Output Documentation
 164                                 <button type="button" class="close" onClick="$('#panelRef').hide()" aria-hidden="true">&times;</button>
 165                         </div>
 166                         <div class="panel-body" id="code-panel">
 167                                 <h4>Line and memory references</h4>
 168                                 <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>
 169                                 <table class="table table-striped">
 170                                 <tr>
 171                                         <th>Shorthand</th>
 172                                         <th>Description</th>
 173                                 </tr><tr>
 174                                         <td>web:5</td>
 175                                         <td>Source line 5</td>
 176                                 </tr><tr>
 177                                         <td>L8</td>
 178                                         <td>Source line 8</td>
 179                                 </tr><tr>
 180                                         <td>rA, rX</td>
 181                                         <td>Registers A, X</td>
 182                                 </tr><tr>
 183                                         <td>m24</td>
 184                                         <td>Memory at address 24 (bytes)</td>
 185                                 </tr><tr>
 186                                         <td>instr@m24</td>
 187                                         <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>
 188                                 </tr>
 189                                 </table>
 190
 191                                 <h4>Common errors and warnings</h4>
 192
 193                                 <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>
 194
 195                                 <table class="table table-striped">
 196                                 <tr>
 197                                         <th>Error</th>
 198                                         <th>Meaning</th>
 199                                 </tr><tr>
 200                                         <td>... the CFG may be wrong</td>
 201                                         <td>The program structure is too complex to analyze. This happens when jumping to dynamic addresses and when using switch statements.</td>
 202                                 </tr><tr>
 203                                         <td>unreachable instructions</td>
 204                                         <td>There's dead code.</td>
 205                                 </tr><tr>
 206                                         <td>data in program flow</td>
 207                                         <td>The program may execute raw data. There's probably a <code>BR</code> missing.</td>
 208                                 </tr><tr>
 209                                         <td>overwriting code at...</td>
 210                                         <td>An instruction writes over an existing instruction (probably your code).</td>
 211                                 </tr><tr>
 212                                         <td>expected "type" in "address", got "something"</td>
 213                                         <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>
 214                                         </td>
 215                                 </tr>
 216                                 </table>
 217                         </div>
 218                 </div>
 219           </div>
 220         </div>
 221
 222           <div class="col-sm-12 col-lg-12">
 223                 <div class="panel panel-default" id="panelGraph" style="display: none;">
 224                         <div class="panel-heading">Control Flow Graph (CFG)
 225                                 <button type="button" class="close" onClick="$('#panelGraph').hide()" aria-hidden="true">&times;</button>
 226                         </div>
 227                         <div class="panel-body">
 228                                 <div id="graph"></div>
 229                         </div>
 230                 </div>
 231           </div>
 232
 233         <script>
 234                 var Module = {
 235                         'print': function(text) {
 236                                 $("#console").append(text + "<br>")
 237                         },
 238                         'noInitialRun': true,
 239                 }
 240         </script>
 241         <script src="pep8analysis.js"></script>
 242         <script>Pep8Module = Module</script>
 243         <script src="viz.js"></script>
 244 </div>
 245
 246 </body>
 247 </html>