harmony-scoping: Implement debugger support for script scope.

test/mjsunit/debug-function-scopes.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 30 matching lines @@
     assertEquals(expected, actual);
   }
 }
 
 // A copy of the scope types from mirror-debugger.js.
 var ScopeType = { Global: 0,
                   Local: 1,
                   With: 2,
                   Closure: 3,
                   Catch: 4,
-                  Block: 5 };
+                  Block: 5,
+                  Script: 6};
 
 var f1 = (function F1(x) {
   function F2(y) {
     var z = x + y;
     with ({w: 5, v: "Capybara"}) {
       var F3 = function(a, b) {
         function F4(p) {
           return p + a + b + z + w + v.length;
         }
         return F4;
       }
       return F3(4, 5);
     }
   }
   return F2(17);
 })(5);
 
 var mirror = Debug.MakeMirror(f1);
 
-assertEquals(5, mirror.scopeCount());
+assertEquals(6, mirror.scopeCount());
 
 CheckScope(mirror.scope(0), { a: 4, b: 5 }, ScopeType.Closure);
 CheckScope(mirror.scope(1), { w: 5, v: "Capybara" }, ScopeType.With);
 CheckScope(mirror.scope(2), { y: 17, z: 22 }, ScopeType.Closure);
 CheckScope(mirror.scope(3), { x: 5 }, ScopeType.Closure);
-CheckScope(mirror.scope(4), {}, ScopeType.Global);
+CheckScope(mirror.scope(4), {}, ScopeType.Script);
+CheckScope(mirror.scope(5), {}, ScopeType.Global);
 
 var f2 = function() { return 5; }
 
 var mirror = Debug.MakeMirror(f2);
 
-assertEquals(1, mirror.scopeCount());
+assertEquals(2, mirror.scopeCount());
 
-CheckScope(mirror.scope(0), {}, ScopeType.Global);
+CheckScope(mirror.scope(0), {}, ScopeType.Script);
+CheckScope(mirror.scope(1), {}, ScopeType.Global);
 
 var f3 = (function F1(invisible_parameter) {
   var invisible1 = 1;
   var visible1 = 10;
   return (function F2() {
     var invisible2 = 2;
     return (function F3() {
       var visible2 = 20;
       var invisible2 = 3;
       return (function () {return visible1 + visible2 + visible1a;});
     })();
   })();
 })(5);
 
 var mirror = Debug.MakeMirror(f3);
 
-assertEquals(3, mirror.scopeCount());
+assertEquals(4, mirror.scopeCount());
 
 CheckScope(mirror.scope(0), { visible2: 20 }, ScopeType.Closure);
 CheckScope(mirror.scope(1), { visible1: 10 }, ScopeType.Closure);
-CheckScope(mirror.scope(2), {}, ScopeType.Global);
+CheckScope(mirror.scope(2), {}, ScopeType.Script);
+CheckScope(mirror.scope(3), {}, ScopeType.Global);
 
 
 var f4 = (function One() {
   try {
     throw "I'm error 1";
   } catch (e1) {
     try {
       throw "I'm error 2";
     } catch (e2) {
       return function GetError() {
         return e1 + e2;
       };
     }
   }
 })();
 
 var mirror = Debug.MakeMirror(f4);
 
-assertEquals(3, mirror.scopeCount());
+assertEquals(4, mirror.scopeCount());
 
 CheckScope(mirror.scope(0), { e2: "I'm error 2" }, ScopeType.Catch);
 CheckScope(mirror.scope(1), { e1: "I'm error 1" }, ScopeType.Catch);
-CheckScope(mirror.scope(2), {}, ScopeType.Global);
+CheckScope(mirror.scope(2), {}, ScopeType.Script);
+CheckScope(mirror.scope(3), {}, ScopeType.Global);
 
 
 var f5 = (function Raz(p1, p2) {
   var p3 = p1 + p2;
   return (function() {
     var p4 = 20;
     var p5 = 21;
     var p6 = 22;
     return eval("(function(p7){return p1 + p4 + p6 + p7})");
   })();
 })(1,2);
 
 var mirror = Debug.MakeMirror(f5);
 
-assertEquals(3, mirror.scopeCount());
+assertEquals(4, mirror.scopeCount());
 
 CheckScope(mirror.scope(0), { p4: 20, p6: 22 }, ScopeType.Closure);
 CheckScope(mirror.scope(1), { p1: 1 }, ScopeType.Closure);
-CheckScope(mirror.scope(2), {}, ScopeType.Global);
+CheckScope(mirror.scope(2), {}, ScopeType.Script);
+CheckScope(mirror.scope(3), {}, ScopeType.Global);
 
 
 function CheckNoScopeVisible(f) {
   var mirror = Debug.MakeMirror(f);
   assertEquals(0, mirror.scopeCount());
 }
 
 CheckNoScopeVisible(Number);
 
 CheckNoScopeVisible(Function.toString);
 
 // This getter is known to be implemented as closure.
 CheckNoScopeVisible(new Error().__lookupGetter__("stack"));