Extract string->double and double->string conversions for use in the preparser.

src/v8utils.cc

-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// 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
 //       with the distribution.
@@ skipping 200 matching lines @@
 
 int WriteBytes(const char* filename,
                const byte* bytes,
                int size,
                bool verbose) {
   const char* str = reinterpret_cast<const char*>(bytes);
   return WriteChars(filename, str, size, verbose);
 }
 
 
-StringBuilder::StringBuilder(int size) {
-  buffer_ = Vector<char>::New(size);
-  position_ = 0;
-}
-
-
-void StringBuilder::AddString(const char* s) {
-  AddSubstring(s, StrLength(s));
-}
-
-
-void StringBuilder::AddSubstring(const char* s, int n) {
-  ASSERT(!is_finalized() && position_ + n < buffer_.length());
-  ASSERT(static_cast<size_t>(n) <= strlen(s));
-  memcpy(&buffer_[position_], s, n * kCharSize);
-  position_ += n;
-}
-
 
 void StringBuilder::AddFormatted(const char* format, ...) {
   va_list arguments;
   va_start(arguments, format);
   AddFormattedList(format, arguments);
   va_end(arguments);
 }
 
 
 void StringBuilder::AddFormattedList(const char* format, va_list list) {
   ASSERT(!is_finalized() && position_ < buffer_.length());
   int n = OS::VSNPrintF(buffer_ + position_, format, list);
   if (n < 0 || n >= (buffer_.length() - position_)) {
     position_ = buffer_.length();
   } else {
     position_ += n;
   }
 }
 
 
-void StringBuilder::AddPadding(char c, int count) {
-  for (int i = 0; i < count; i++) {
-    AddCharacter(c);
-  }
-}
-
-
-char* StringBuilder::Finalize() {
-  ASSERT(!is_finalized() && position_ < buffer_.length());
-  buffer_[position_] = '\0';
-  // Make sure nobody managed to add a 0-character to the
-  // buffer while building the string.
-  ASSERT(strlen(buffer_.start()) == static_cast<size_t>(position_));
-  position_ = -1;
-  ASSERT(is_finalized());
-  return buffer_.start();
-}
-
-
 MemoryMappedExternalResource::MemoryMappedExternalResource(const char* filename)
     : filename_(NULL),
       data_(NULL),
       length_(0),
       remove_file_on_cleanup_(false) {
   Init(filename);
 }
 
 
 MemoryMappedExternalResource::
@@ skipping 73 matching lines @@
       start_of_line = p;
       line_no++;
     }
   }
 
   return is_ascii;
 }
 
 
 } }  // namespace v8::internal