third_party/WebKit/LayoutTests/fast/js/regexp-caching.html

   1 <html>
   2 <head>
   3 <script>
   4 function print(message)
   5 {
   6     var block = document.createElement("div");
   7     block.appendChild(document.createTextNode(message));
   8     block.appendChild(document.createElement("br"));
   9     document.getElementById("console").appendChild(block);
  10 }
  11
  12 function isReadOnly(object, property)
  13 {
  14     var oldValue = object[property];
  15     object[property] = !object[property];
  16     var result = (object[property] == oldValue);
  17     object[property] = oldValue;
  18     return result;
  19 }
  20
  21 function printPropertiesWithReadOnly(object)
  22 {
  23     var array = new Array;
  24     for (var property in object) {
  25         array.push(property);
  26     }
  27     array.sort();
  28     for (var i = 0; i < array.length; i++) {
  29         var property = array[i];
  30         print(property + ": {" + object[property] + "} " + (isReadOnly(object, property) ? "(read-only)" : "(read-write)"));
  31     }
  32 }
  33
  34 function printProperties(object)
  35 {
  36     var array = new Array;
  37     for (var property in object) {
  38         array.push(property);
  39     }
  40     array.sort();
  41     for (var i = 0; i < array.length; i++) {
  42         var property = array[i];
  43         print(property + ": {" + object[property] + "}");
  44     }
  45 }
  46
  47 function test() {
  48     if (window.testRunner)
  49         testRunner.dumpAsText();
  50
  51     print("Properties of RegExp at startup:");
  52     printPropertiesWithReadOnly(RegExp);
  53
  54     var r = /(1)(2)(3)(4)(5)(6)(7)(8)(9)(0)/;
  55     var matchingString = "<1234567890>";
  56     var unmatchingString = "XXX";
  57
  58     var dummyRegExp = new RegExp();
  59     var dummyString = "";
  60
  61     print("");
  62     r.exec(matchingString);
  63     print("Properties of RegExp after " + r + ".exec(" + matchingString + "):");
  64     printProperties(RegExp);
  65
  66     print("");
  67     print("RegExp.$0 " + (RegExp.$0 ? "exists" : "does not exist"));
  68     print("RegExp.$10 " + (RegExp.$10 ? "exists" : "does not exist"));
  69     print("RegExp " + (r.test() ? "uses" : "doesn't use") + " RegExp.input");
  70
  71     RegExp.multiline = "foo";
  72     print("RegExp.multiline " + (typeof RegExp.multiline == typeof Boolean() ? "coerces" : "doesn't coerce") + " values to booleans");
  73     RegExp.input = Number();
  74     print("RegExp.input " + (typeof RegExp.input == typeof String() ? "coerces" : "doesn't coerce") + " values to strings");
  75
  76     print("");
  77     r.exec(unmatchingString);
  78     print("Properties of RegExp after " + r + ".exec(" + unmatchingString + "):");
  79     printProperties(RegExp);
  80
  81     print("");
  82     print("---------- [Cleared RegExp values] ----------");
  83     dummyRegExp.exec(dummyString);
  84     if (RegExp.lastMatch != "")
  85         print("Clear failed");
  86
  87     matchingString.search(r);
  88     print("Properties of RegExp after " + matchingString + ".search(" + r + "):");
  89     printProperties(RegExp);
  90
  91     print("");
  92     print("---------- [Cleared RegExp values] ----------");
  93     dummyRegExp.exec(dummyString);
  94
  95     matchingString.replace(r);
  96     print("Properties of RegExp after " + matchingString + ".replace(" + r + "):");
  97     printProperties(RegExp);
  98 }
  99 </script>
 100 </head>
 101 <body onload="test();">
 102 <p>
 103 This test checks our implementation of the special RegExp member variables.
 104 </p>
 105 <hr>
 106 <div id='console'/ style="font-family: courier; font-size: 12">
 107 </body>
 108 </html>