Revert premature addition to parser.

src/parser.cc

 // Copyright 2010 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 18 matching lines @@
 
 #include "api.h"
 #include "ast.h"
 #include "bootstrapper.h"
 #include "codegen.h"
 #include "compiler.h"
 #include "func-name-inferrer.h"
 #include "messages.h"
 #include "parser.h"
 #include "platform.h"
-#include "prescanner.h"
 #include "preparser.h"
 #include "runtime.h"
 #include "scopeinfo.h"
 #include "string-stream.h"
 
 #include "ast-inl.h"
 #include "jump-target-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 4611 matching lines @@
   // contiguous vector that we are responsible for disposing.
   Vector<unsigned> store = recorder.ExtractData();
   return new ScriptDataImpl(store);
 }
 
 
 ScriptDataImpl* ParserApi::PreParse(Handle<String> source,
                                     unibrow::CharacterStream* stream,
                                     v8::Extension* extension) {
   Handle<Script> no_script;
-  int length = 0;
-  SafeStringInputBuffer safe_stream;
-  if (!source.is_null()) {
-    length = source->length();
-    safe_stream.Reset(source.location());
-    stream = &safe_stream;
-  } else {
-    length = stream->Length();
-  }
-  typedef preparser::Scanner<CharacterStreamUTF16Buffer, UTF8Buffer> PreScanner;
-  preparser::PreParser<PreScanner, CompleteParserRecorder> parser;
-  CharacterStreamUTF16Buffer buffer;
-  buffer.Initialize(source, stream, 0, length);
-  PreScanner scanner;
-  scanner.Initialize(&buffer);
+  preparser::PreParser<Scanner, CompleteParserRecorder> parser;
+  Scanner scanner;
+  scanner.Initialize(source, stream, JAVASCRIPT);
   bool allow_lazy = FLAG_lazy && (extension == NULL);
   CompleteParserRecorder recorder;
   if (!parser.PreParseProgram(&scanner, &recorder, allow_lazy)) {
     Top::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);
@@ skipping 49 matching lines @@
       Handle<String> source = Handle<String>(String::cast(script->source()));
       result = parser.ParseProgram(source, info->is_global());
     }
   }
 
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal