Move webrtc/{base => rtc_base}

webrtc/base/string_to_number.h

 /*
  *  Copyright 2017 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_BASE_STRING_TO_NUMBER_H_
 #define WEBRTC_BASE_STRING_TO_NUMBER_H_
 
-#include <string>
-#include <limits>
 
-#include "webrtc/base/optional.h"
-
-namespace rtc {
-
-// This file declares a family of functions to parse integers from strings.
-// The standard C library functions either fail to indicate errors (atoi, etc.)
-// or are a hassle to work with (strtol, sscanf, etc.). The standard C++ library
-// functions (std::stoi, etc.) indicate errors by throwing exceptions, which
-// are disabled in WebRTC.
-//
-// Integers are parsed using one of the following functions:
-//   rtc::Optional<int-type> StringToNumber(const char* str, int base = 10);
-//   rtc::Optional<int-type> StringToNumber(const std::string& str,
-//                                          int base = 10);
-//
-// These functions parse a value from the beginning of a string into one of the
-// fundamental integer types, or returns an empty Optional if parsing
-// failed. Values outside of the range supported by the type will be
-// rejected. The strings must begin with a digit or a minus sign. No leading
-// space nor trailing contents are allowed.
-// By setting base to 0, one of octal, decimal or hexadecimal will be
-// detected from the string's prefix (0, nothing or 0x, respectively).
-// If non-zero, base can be set to a value between 2 and 36 inclusively.
-//
-// If desired, this interface could be extended with support for floating-point
-// types.
-
-namespace string_to_number_internal {
-// These must be (unsigned) long long, to match the signature of strto(u)ll.
-using unsigned_type = unsigned long long;  // NOLINT(runtime/int)
-using signed_type = long long;  // NOLINT(runtime/int)
-
-rtc::Optional<signed_type> ParseSigned(const char* str, int base);
-rtc::Optional<unsigned_type> ParseUnsigned(const char* str, int base);
-}  // namespace string_to_number_internal
-
-template <typename T>
-typename std::enable_if<std::is_integral<T>::value && std::is_signed<T>::value,
-                        rtc::Optional<T>>::type
-StringToNumber(const char* str, int base = 10) {
-  using string_to_number_internal::signed_type;
-  static_assert(
-      std::numeric_limits<T>::max() <=
-              std::numeric_limits<signed_type>::max() &&
-          std::numeric_limits<T>::lowest() >=
-              std::numeric_limits<signed_type>::lowest(),
-      "StringToNumber only supports signed integers as large as long long int");
-  rtc::Optional<signed_type> value =
-      string_to_number_internal::ParseSigned(str, base);
-  if (value && *value >= std::numeric_limits<T>::lowest() &&
-      *value <= std::numeric_limits<T>::max()) {
-    return rtc::Optional<T>(static_cast<T>(*value));
-  }
-  return rtc::Optional<T>();
-}
-
-template <typename T>
-typename std::enable_if<std::is_integral<T>::value &&
-                            std::is_unsigned<T>::value,
-                        rtc::Optional<T>>::type
-StringToNumber(const char* str, int base = 10) {
-  using string_to_number_internal::unsigned_type;
-  static_assert(std::numeric_limits<T>::max() <=
-                    std::numeric_limits<unsigned_type>::max(),
-                "StringToNumber only supports unsigned integers as large as "
-                "unsigned long long int");
-  rtc::Optional<unsigned_type> value =
-      string_to_number_internal::ParseUnsigned(str, base);
-  if (value && *value <= std::numeric_limits<T>::max()) {
-    return rtc::Optional<T>(static_cast<T>(*value));
-  }
-  return rtc::Optional<T>();
-}
-
-// The std::string overloads only exists if there is a matching const char*
-// version.
-template <typename T>
-auto StringToNumber(const std::string& str, int base = 10)
-    -> decltype(StringToNumber<T>(str.c_str(), base)) {
-  return StringToNumber<T>(str.c_str(), base);
-}
-
-}  // namespace rtc
+// This header is deprecated and is just left here temporarily during
+// refactoring. See https://bugs.webrtc.org/7634 for more details.
+#include "webrtc/rtc_base/string_to_number.h"
 
 #endif  // WEBRTC_BASE_STRING_TO_NUMBER_H_