Parse harmony let declarations.

test/mjsunit/bugs/harmony/debug-blockscopes.js

 // Copyright 2011 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 139 matching lines @@
   }
   // Skip property with empty name.
   if (!scope.scopeObject().property('').isUndefined()) {
     scope_size--;
   }
   // Also ignore synthetic variable from block scopes.
   if (!scope.scopeObject().property('.block').isUndefined()) {
     scope_size--;
   }
 
-  // TODO(keuchel): print('count' + count + ' scopesize' + scope_size);
   if (count != scope_size) {
     print('Names found in scope:');
     var names = scope.scopeObject().propertyNames();
     for (var i = 0; i < names.length; i++) {
       print(names[i]);
     }
   }
   assertEquals(count, scope_size);
 
   // Get the debug command processor.
@@ skipping 15 matching lines @@
     assertTrue(response.body.object.ref >= 0);
   }
   var found = false;
   for (var i = 0; i < response.refs.length && !found; i++) {
     found = response.refs[i].handle == response.body.object.ref;
   }
   assertTrue(found, "Scope object " + response.body.object.ref + " not found");
 }
 
 
-// Simple empty block scope in local scope.
-BeginTest("Local block 1");
+// Simple closure formed by returning an inner function referering to an outer
+// block local variable and an outer function's parameter. Due to VM
+// optimizations parts of the actual closure is missing from the debugger
+// information.
+BeginTest("Closure 1");
 
-function local_block_1() {
-  {
-    debugger;
+function closure_1(a) {
+  var x = 2;
+  let y = 3;
+  if (true) {
+    let z = 4;
+    function f() {
+      debugger;
+      return a + x + y + z;
+    };
+    return f;
   }
 }
 
 listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Block,
-                   debug.ScopeType.Local,
+  CheckScopeChain([debug.ScopeType.Local,
+                   debug.ScopeType.Block,
+                   debug.ScopeType.Closure,
                    debug.ScopeType.Global], exec_state);
   CheckScopeContent({}, 0, exec_state);
-  CheckScopeContent({}, 1, exec_state);
+  CheckScopeContent({z:4}, 1, exec_state);
+  CheckScopeContent({a:1,x:2,y:3}, 2, exec_state);
 };
-local_block_1();
+closure_1(1)();
 EndTest();
-
-
-// Local scope with a parameter.
-BeginTest("Local 2");
-
-function local_2(a) {
-  {
-    debugger;
-  }
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Block,
-                   debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({a:1}, 1, exec_state);
-};
-local_2(1);
-EndTest();
-
-
-// Local scope with a parameter and a local variable.
-BeginTest("Local 3");
-
-function local_3(a) {
-  var x = 3;
-  debugger;
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({a:1,x:3}, 0, exec_state);
-};
-local_3(1);
-EndTest();
-
-
-// Local scope with parameters and local variables.
-BeginTest("Local 4");
-
-function local_4(a, b) {
-  var x = 3;
-  var y = 4;
-  debugger;
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({a:1,b:2,x:3,y:4}, 0, exec_state);
-};
-local_4(1, 2);
-EndTest();
-
-
-// Single empty with block.
-BeginTest("With block 1");
-
-function with_block_1() {
-  with({}) {
-    debugger;
-  }
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Block,
-                   debug.ScopeType.With,
-                   debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({}, 0, exec_state);
-  CheckScopeContent({}, 1, exec_state);
-};
-with_block_1();
-EndTest();
-
-
-// Nested empty with blocks.
-BeginTest("With block 2");
-
-function with_block_2() {
-  with({}) {
-    with({}) {
-      debugger;
-    }
-  }
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Block,
-                   debug.ScopeType.With,
-                   debug.ScopeType.Block,
-                   debug.ScopeType.With,
-                   debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({}, 0, exec_state);
-  CheckScopeContent({}, 1, exec_state);
-  CheckScopeContent({}, 2, exec_state);
-  CheckScopeContent({}, 3, exec_state);
-};
-with_block_2();
-EndTest();
-
-
-// With block using an in-place object literal.
-BeginTest("With block 3");
-
-function with_block_3() {
-  with({a:1,b:2}) {
-    debugger;
-  }
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Block,
-                   debug.ScopeType.With,
-                   debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({}, 0, exec_state);
-  CheckScopeContent({a:1,b:2}, 1, exec_state);
-};
-with_block_3();
-EndTest();
-
-
-// Nested with blocks using in-place object literals.
-BeginTest("With block 4");
-
-function with_block_4() {
-  with({a:1,b:2}) {
-    with({a:2,b:1}) {
-      debugger;
-    }
-  }
-}
-
-listener_delegate = function(exec_state) {
-  CheckScopeChain([debug.ScopeType.Block,
-                   debug.ScopeType.With,
-                   debug.ScopeType.Block,
-                   debug.ScopeType.With,
-                   debug.ScopeType.Local,
-                   debug.ScopeType.Global], exec_state);
-  CheckScopeContent({a:2,b:1}, 1, exec_state);
-  CheckScopeContent({a:1,b:2}, 3, exec_state);
-};
-with_block_4();
-EndTest();
-
-
-// TODO(keuchel):
-// Simple closure formed by returning an inner function referering to an outer
-// block local variable and an outer function's parameter.
-// BeginTest("Closure 1");
-//
-// function closure_1(a) {
-//   {
-//     let x = 3;
-//     function f() {
-//       debugger;
-//       return a + x;
-//     };
-//   }
-//   return f;
-// }
-//
-// listener_delegate = function(exec_state) {
-//   CheckScopeChain([debug.ScopeType.Local,
-//                    debug.ScopeType.Closure,
-//                    debug.ScopeType.Global], exec_state);
-//   // CheckScopeContent({}, 0, exec_state);
-//   // CheckScopeContent({}, 1, exec_state);
-//   // CheckScopeContent({a:1}, 2, exec_state);
-// };
-// closure_1(1)();
-// EndTest();