[es6] Handle unicode escapes before checking for keywords

test/test262-es6/test262-es6.status

 # 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 601 matching lines @@
   'built-ins/RegExp/prototype/sticky/name': [FAIL],
 
   # https://code.google.com/p/v8/issues/detail?id=4360
   'intl402/Collator/10.1.1_1': [FAIL],
   'intl402/DateTimeFormat/12.1.1_1': [FAIL],
   'intl402/NumberFormat/11.1.1_1': [FAIL],
 
   # https://code.google.com/p/v8/issues/detail?id=4361
   'intl402/Collator/10.1.1_a': [FAIL],
 
-  # https://code.google.com/p/v8/issues/detail?id=1972
-  'language/identifiers/val-break-via-escape-hex': [FAIL],
-  'language/identifiers/val-break-via-escape-hex4': [FAIL],
-  'language/identifiers/val-case-via-escape-hex': [FAIL],
-  'language/identifiers/val-case-via-escape-hex4': [FAIL],
-  'language/identifiers/val-catch-via-escape-hex': [FAIL],
-  'language/identifiers/val-catch-via-escape-hex4': [FAIL],
-  'language/identifiers/val-class-via-escape-hex': [FAIL],
-  'language/identifiers/val-class-via-escape-hex4': [FAIL],
-  'language/identifiers/val-const-via-escape-hex': [FAIL],
-  'language/identifiers/val-const-via-escape-hex4': [FAIL],
-  'language/identifiers/val-continue-via-escape-hex': [FAIL],
-  'language/identifiers/val-continue-via-escape-hex4': [FAIL],
-  'language/identifiers/val-debugger-via-escape-hex': [FAIL],
-  'language/identifiers/val-debugger-via-escape-hex4': [FAIL],
-  'language/identifiers/val-default-via-escape-hex': [FAIL],
-  'language/identifiers/val-default-via-escape-hex4': [FAIL],
-  'language/identifiers/val-delete-via-escape-hex': [FAIL],
-  'language/identifiers/val-delete-via-escape-hex4': [FAIL],
-  'language/identifiers/val-do-via-escape-hex': [FAIL],
-  'language/identifiers/val-do-via-escape-hex4': [FAIL],
-  'language/identifiers/val-else-via-escape-hex': [FAIL],
-  'language/identifiers/val-else-via-escape-hex4': [FAIL],
-  'language/identifiers/val-enum-via-escape-hex': [FAIL],
-  'language/identifiers/val-enum-via-escape-hex4': [FAIL],
-  'language/identifiers/val-export-via-escape-hex': [FAIL],
-  'language/identifiers/val-export-via-escape-hex4': [FAIL],
-  'language/identifiers/val-extends-via-escape-hex': [FAIL],
-  'language/identifiers/val-extends-via-escape-hex4': [FAIL],
-  'language/identifiers/val-false-via-escape-hex': [FAIL],
-  'language/identifiers/val-false-via-escape-hex4': [FAIL],
-  'language/identifiers/val-finally-via-escape-hex': [FAIL],
-  'language/identifiers/val-finally-via-escape-hex4': [FAIL],
-  'language/identifiers/val-for-via-escape-hex': [FAIL],
-  'language/identifiers/val-for-via-escape-hex4': [FAIL],
-  'language/identifiers/val-function-via-escape-hex': [FAIL],
-  'language/identifiers/val-function-via-escape-hex4': [FAIL],
-  'language/identifiers/val-if-via-escape-hex': [FAIL],
-  'language/identifiers/val-if-via-escape-hex4': [FAIL],
-  'language/identifiers/val-import-via-escape-hex': [FAIL],
-  'language/identifiers/val-import-via-escape-hex4': [FAIL],
-  'language/identifiers/val-in-via-escape-hex': [FAIL],
-  'language/identifiers/val-in-via-escape-hex4': [FAIL],
-  'language/identifiers/val-instanceof-via-escape-hex': [FAIL],
-  'language/identifiers/val-instanceof-via-escape-hex4': [FAIL],
-  'language/identifiers/val-new-via-escape-hex': [FAIL],
-  'language/identifiers/val-new-via-escape-hex4': [FAIL],
-  'language/identifiers/val-null-via-escape-hex': [FAIL],
-  'language/identifiers/val-null-via-escape-hex4': [FAIL],
-  'language/identifiers/val-return-via-escape-hex': [FAIL],
-  'language/identifiers/val-return-via-escape-hex4': [FAIL],
-  'language/identifiers/val-super-via-escape-hex': [FAIL],
-  'language/identifiers/val-super-via-escape-hex4': [FAIL],
-  'language/identifiers/val-switch-via-escape-hex': [FAIL],
-  'language/identifiers/val-switch-via-escape-hex4': [FAIL],
-  'language/identifiers/val-throw-via-escape-hex': [FAIL],
-  'language/identifiers/val-throw-via-escape-hex4': [FAIL],
-  'language/identifiers/val-true-via-escape-hex': [FAIL],
-  'language/identifiers/val-true-via-escape-hex4': [FAIL],
-  'language/identifiers/val-try-via-escape-hex': [FAIL],
-  'language/identifiers/val-try-via-escape-hex4': [FAIL],
-  'language/identifiers/val-typeof-via-escape-hex': [FAIL],
-  'language/identifiers/val-typeof-via-escape-hex4': [FAIL],
-  'language/identifiers/val-var-via-escape-hex': [FAIL],
-  'language/identifiers/val-var-via-escape-hex4': [FAIL],
-  'language/identifiers/val-void-via-escape-hex': [FAIL],
-  'language/identifiers/val-void-via-escape-hex4': [FAIL],
-  'language/identifiers/val-while-via-escape-hex': [FAIL],
-  'language/identifiers/val-while-via-escape-hex4': [FAIL],
-  'language/identifiers/val-with-via-escape-hex': [FAIL],
-  'language/identifiers/val-with-via-escape-hex4': [FAIL],
-
   # https://code.google.com/p/v8/issues/detail?id=4362
   'built-ins/String/prototype/repeat/empty-string-returns-empty': [PASS, FAIL],
 
   ######################## NEEDS INVESTIGATION ###########################
 
   # These test failures are specific to the intl402 suite and need investigation
   # to be either marked as bugs with issues filed for them or as deliberate
   # incompatibilities if the test cases turn out to be broken or ambiguous.
   # Some of these are related to v8:4361 in being visible side effects from Intl.
   'intl402/6.2.3': [FAIL],
@@ skipping 98 matching lines @@
 
   # BUG(3251225): Tests that timeout with --nocrankshaft.
   'built-ins/decodeURI/S15.1.3.1_A2.4_T1': [SKIP],
   'built-ins/decodeURI/S15.1.3.1_A2.5_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A2.4_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A2.5_T1': [SKIP],
   'built-ins/encodeURI/S15.1.3.3_A2.3_T1': [SKIP],
   'built-ins/encodeURIComponent/S15.1.3.4_A2.3_T1': [SKIP],
 }],  # 'arch == arm or arch == mipsel or arch == mips or arch == arm64'
 ]