FYI Implementing 'super' keyword

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
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 //     * Redistributions in binary form must reproduce the above
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@@ skipping 3329 matching lines @@
 
     // Arrow has more precedence, this is the same as: foo ? bar : (baz = {})
     "foo ? bar : baz => {}",
     NULL
   };
 
   static const ParserFlag always_flags[] = {kAllowArrowFunctions};
   RunParserSyncTest(context_data, statement_data, kSuccess, NULL, 0,
                     always_flags, ARRAY_SIZE(always_flags));
 }
+
+
+TEST(NoErrorsSuper) {
+  // Tests that parser and preparser accept valid arrow functions syntax.

[marja, 2014/08/11 10:38:15]

Nit: this comment is out of date.

+  const char* context_data[][2] = {{"", ";"},

[marja, 2014/08/11 10:38:15]

You can probably get rid of some of the contexts or add more relevant ones.
These were mostly interesting for arrow functions.

+                                   {"bar ? (", ") : baz;"},
+                                   {"bar ? baz : (", ");"},
+                                   {"bar, ", ";"},
+                                   {"", ", bar;"},
+                                   {NULL, NULL}};
+
+  const char* statement_data[] = {
+    "super.x",
+    "super[27]",
+    "new super",
+    "new super()",
+    "new super(12, 45)",
+    "new new super",
+    "new new super()",
+    "new new super()()",
+    NULL};
+
+  RunParserSyncTest(context_data, statement_data, kSuccess);
+}
+
+
+TEST(ErrorsSuper) {
+  // Tests that parser and preparser accept valid arrow functions syntax.

[marja, 2014/08/11 10:38:15]

Same here.

+  const char* context_data[][2] = {{"", ";"},
+                                   {"bar ? (", ") : baz;"},
+                                   {"bar ? baz : (", ");"},
+                                   {"bar, ", ";"},
+                                   {"", ", bar;"},
+                                   {NULL, NULL}};
+
+  const char* statement_data[] = {
+    "super = x",
+    "y = super",
+    "f(super)",
+    // "z.super",
+    NULL};
+
+  RunParserSyncTest(context_data, statement_data, kError);
+}