dojo eval strategy (v2)

Revision 2 of this benchmark created by Bryan Forbes on May 21, 2011

Preparation HTML

<script>
  // Created in a closure to simulate how Dojo 1.6's eval is defined.
  // All variables in the closure are the same name as the variables in
  // the closure dojo.eval is defined in for 1.6.
  var eval16 = (function() {
   var cn = ["assert", "count", "debug", "dir", "dirxml", "error", "group", "groupEnd", "info", "profile", "profileEnd", "time", "timeEnd", "trace", "warn", "log"],
       i = 0,
       tn;
   // dojo alias
   var d = {
    _scopeName: "dojo",
    _scopePrefix: "",
    _scopePrefixArgs: "",
    _scopeSuffix: "",
    _scopeMap: {},
    _scopeMapRev: {}
   };
  
   d._scopeArgs = [];
   d.global = this;
   d.config = {
    isDebug: false,
    debugAtAllCosts: false,
   };
   d.locale = "";
   d.version = {};
  
   // djConfig
   var cfg = {},
       c;
  
   var rev = "$Rev$".match(/\d+/);
  
   var extraNames, extraLen, empty = {};
   for (i in {
    toString: 1
   }) {
    extraNames = [];
    break;
   }
   d._extraNames = extraNames = extraNames || ["hasOwnProperty", "valueOf", "isPrototypeOf", "propertyIsEnumerable", "toLocaleString", "toString", "constructor"];
   extraLen = extraNames.length;
   d._mixin = function() {};
   d.mixin = function() {};
   d._getProp = function() {};
   d.setObject = function() {};
   d.getObject = function() {};
   d.exists = function() {};
  
  
   d["eval"] = function(text) {
    return d.global.eval ? d.global.eval(text) : eval(text);
   };
  
   d.deprecated = d.experimental = function() {};
  
   d.Deferred = function() {};
   d.Color = function() {};
   d.indexOf = function() {};
   d.forEach = function() {};
   d.map = function() {};
   d.every = function() {};
   d.some = function() {};
   return d["eval"];
  })();
  
  var eval17 = new Function("text", "return eval(text);");
  
  // Defined in the global scope so it's a lot
  // like eval17
  var eval17New = function(text) {
   return eval(text);
  };
  
  var eval17Scoped = (new Function("eval", "return function(){ return eval(arguments[0]); };"))(eval);
  
  var evalFunc = function(text) {
   return (Function(text)());
  };
  
  var dojoEval; // this will get set in the tests
  // Note that I have to suffix these variables with '1'
  // because 'c', 'd', and 'i' will be shadowed in the
  // 1.6 test case
  var a1 = 'dojoEval(b1);',
      b1 = 'dojoEval(c1);',
      c1 = 'dojoEval(d1);',
      d1 = 'dojoEval(e1);',
      e1 = 'dojoEval(f1);',
      f1 = 'dojoEval(g1);',
      g1 = 'dojoEval(h1);',
      h1 = 'dojoEval(i1);',
      i1 = 'dojoEval(j1);',
      j1 = 'dojoEval(k1);',
      k1 = 'dojoEval(l1);',
      l1 = 'dojoEval(m1);',
      m1 = 'dojoEval(n1);',
      n1 = 'dojoEval(o1);',
      o1 = 'dojoEval(p1);',
      p1 = 'dojoEval(q1);',
      q1 = 'dojoEval(r1);',
      r1 = 'dojoEval(s1);',
      s1 = 'dojoEval(t1);',
      t1 = 'dojoEval(u1);',
      u1 = 'dojoEval(v1);',
      v1 = 'dojoEval(w1);',
      w1 = 'dojoEval(x1);',
      x1 = 'dojoEval(y1);',
      y1 = 'dojoEval(z1);',
      z1 = 'dojoEval("1+2+3+4*200");';
  
  ui.benchmarks[0].setup = function() {
   window.dojoEval = window.eval16;
   if (dojoEval(a1) != 806) {
    throw new Error;
   }
  };
  ui.benchmarks[1].setup = function() {
   window.dojoEval = window.eval17;
   if (dojoEval(a1) != 806) {
    throw new Error;
   }
  };
  ui.benchmarks[2].setup = function() {
   window.dojoEval = window.eval17New;
   if (dojoEval(a1) != 806) {
    throw new Error;
   }
  };
  ui.benchmarks[3].setup = function() {
   window.dojoEval = window.eval17Scoped;
   if (dojoEval(a1) != 806) {
    throw new Error;
   }
  };
  ui.benchmarks[4].setup = function() {
   window.dojoEval = window.evalFunc;
   // Using Function() the way it's being used doesn't
   // return the result of the eval so we're not
   // checking it
  };
</script>

Test runner

eval16(a1);

eval17(a1);

eval17New(a1);

eval17Scoped(a1);

evalFunc(a1);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 2: published by Bryan Forbes on May 21, 2011