Make native syntax an early error in the preparser.

src/parser.cc

 // 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 5103 matching lines @@
     result = (result << 7) | (input & 0x7f);
     data++;
   }
   *source = data;
   return result;
 }
 
 
 // Create a Scanner for the preparser to use as input, and preparse the source.
 static ScriptDataImpl* DoPreParse(UC16CharacterStream* source,
-                                  bool allow_lazy,
-                                  ParserRecorder* recorder,
-                                  bool harmony_scoping) {
+                                  int flags,
+                                  ParserRecorder* recorder) {
   Isolate* isolate = Isolate::Current();
   JavaScriptScanner scanner(isolate->unicode_cache());
-  scanner.SetHarmonyScoping(harmony_scoping);
+  scanner.SetHarmonyScoping((flags & kHarmonyScoping) != 0);
   scanner.Initialize(source);
   intptr_t stack_limit = isolate->stack_guard()->real_climit();
   if (!preparser::PreParser::PreParseProgram(&scanner,
                                              recorder,
-                                             allow_lazy,
+                                             flags,
                                              stack_limit)) {
     isolate->StackOverflow();
     return NULL;
   }
 
   // Extract the accumulated data from the recorder as a single
   // contiguous vector that we are responsible for disposing.
   Vector<unsigned> store = recorder->ExtractData();
   return new ScriptDataImpl(store);
 }
 
 
 // Preparse, but only collect data that is immediately useful,
 // even if the preparser data is only used once.
 ScriptDataImpl* ParserApi::PartialPreParse(UC16CharacterStream* source,
                                            v8::Extension* extension,
-                                           bool harmony_scoping) {
+                                           int flags) {
   bool allow_lazy = FLAG_lazy && (extension == NULL);
   if (!allow_lazy) {
     // Partial preparsing is only about lazily compiled functions.
     // If we don't allow lazy compilation, the log data will be empty.
     return NULL;
   }
+  flags |= kAllowLazy;
   PartialParserRecorder recorder;
-  return DoPreParse(source, allow_lazy, &recorder, harmony_scoping);
+  return DoPreParse(source, flags, &recorder);
 }
 
 
 ScriptDataImpl* ParserApi::PreParse(UC16CharacterStream* source,
                                     v8::Extension* extension,
-                                    bool harmony_scoping) {
+                                    int flags) {
   Handle<Script> no_script;
-  bool allow_lazy = FLAG_lazy && (extension == NULL);
+  if (FLAG_lazy && (extension == NULL)) {
+    flags |= kAllowLazy;
+  }
   CompleteParserRecorder recorder;
-  return DoPreParse(source, allow_lazy, &recorder, harmony_scoping);
+  return DoPreParse(source, flags, &recorder);
 }
 
 
 bool RegExpParser::ParseRegExp(FlatStringReader* input,
                                bool multiline,
                                RegExpCompileData* result) {
   ASSERT(result != NULL);
   RegExpParser parser(input, &result->error, multiline);
   RegExpTree* tree = parser.ParsePattern();
   if (parser.failed()) {
@@ skipping 50 matching lines @@
       result = parser.ParseProgram(source,
                                    info->is_global(),
                                    info->StrictMode());
     }
   }
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal