Merge v8converions with conversions

src/conversions.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 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdarg.h>
 #include <limits.h>
 #include <cmath>
 
+#include "v8.h"
+
+#include "assert-scope.h"
+#include "conversions.h"
 #include "conversions-inl.h"
 #include "dtoa.h"
+#include "factory.h"
 #include "list-inl.h"
 #include "strtod.h"
 #include "utils.h"
 
 #ifndef _STLP_VENDOR_CSTD
 // STLPort doesn't import fpclassify into the std namespace.
 using std::fpclassify;
 #endif
 
 namespace v8 {
 namespace internal {
 
 
+namespace {
+
+// C++-style iterator adaptor for StringCharacterStream
+// (unlike C++ iterators the end-marker has different type).
+class StringCharacterStreamIterator {
+ public:
+  class EndMarker {};
+
+  explicit StringCharacterStreamIterator(StringCharacterStream* stream);
+
+  uint16_t operator*() const;
+  void operator++();
+  bool operator==(EndMarker const&) const { return end_; }
+  bool operator!=(EndMarker const& m) const { return !end_; }
+
+ private:
+  StringCharacterStream* const stream_;
+  uint16_t current_;
+  bool end_;
+};
+
+
+StringCharacterStreamIterator::StringCharacterStreamIterator(
+    StringCharacterStream* stream) : stream_(stream) {
+  ++(*this);
+}
+
+uint16_t StringCharacterStreamIterator::operator*() const {
+  return current_;
+}
+
+
+void StringCharacterStreamIterator::operator++() {
+  end_ = !stream_->HasMore();
+  if (!end_) {
+    current_ = stream_->GetNext();
+  }
+}
+}  // End anonymous namespace.
+
+
 double StringToDouble(UnicodeCache* unicode_cache,
                       const char* str, int flags, double empty_string_val) {
   // We cast to const uint8_t* here to avoid instantiating the
   // InternalStringToDouble() template for const char* as well.
   const uint8_t* start = reinterpret_cast<const uint8_t*>(str);
   const uint8_t* end = start + StrLength(str);
   return InternalStringToDouble(unicode_cache, start, end, flags,
                                 empty_string_val);
 }
 
@@ skipping 395 matching lines @@
   // If the number has a decimal part, leave room for the period.
   if (decimal_pos > 0) result_size++;
   // Allocate result and fill in the parts.
   SimpleStringBuilder builder(result_size + 1);
   builder.AddSubstring(integer_buffer + integer_pos + 1, integer_part_size);
   if (decimal_pos > 0) builder.AddCharacter('.');
   builder.AddSubstring(decimal_buffer, decimal_pos);
   return builder.Finalize();
 }
 
+
+double StringToDouble(UnicodeCache* unicode_cache,
+                      String* string,
+                      int flags,
+                      double empty_string_val) {
+  DisallowHeapAllocation no_gc;
+  String::FlatContent flat = string->GetFlatContent();
+  // ECMA-262 section 15.1.2.3, empty string is NaN
+  if (flat.IsAscii()) {
+    return StringToDouble(
+        unicode_cache, flat.ToOneByteVector(), flags, empty_string_val);
+  } else {
+    return StringToDouble(
+        unicode_cache, flat.ToUC16Vector(), flags, empty_string_val);
+  }
+}
+
+
 } }  // namespace v8::internal