Comparison and streaming operators for base::Version

base/version.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_VERSION_H_
 #define BASE_VERSION_H_
 
 #include <stdint.h>
+
+#include <iosfwd>
 #include <string>
 #include <vector>
 
 #include "base/base_export.h"
 
 namespace base {
 
 // Version represents a dotted version number, like "1.2.3.4", supporting
 // parsing and comparison.
 class BASE_EXPORT Version {
@@ skipping 11 matching lines @@
 
   // Returns true if the object contains a valid version number.
   bool IsValid() const;
 
   // Returns true if the version wildcard string is valid. The version wildcard
   // string may end with ".*" (e.g. 1.2.*, 1.*). Any other arrangement with "*"
   // is invalid (e.g. 1.*.3 or 1.2.3*). This functions defaults to standard
   // Version behavior (IsValid) if no wildcard is present.
   static bool IsValidWildcardString(const std::string& wildcard_string);
 
-  // Commonly used pattern. Given a valid version object, compare if a
-  // |version_str| results in a newer version. Returns true if the
-  // string represents valid version and if the version is greater than
-  // than the version of this object.
-  bool IsOlderThan(const std::string& version_str) const;
-
-  bool Equals(const Version& other) const;
-
   // Returns -1, 0, 1 for <, ==, >.
   int CompareTo(const Version& other) const;
 
   // Given a valid version object, compare if a |wildcard_string| results in a
   // newer version. This function will default to CompareTo if the string does
   // not end in wildcard sequence ".*". IsValidWildcard(wildcard_string) must be
   // true before using this function.
   int CompareToWildcardString(const std::string& wildcard_string) const;
 
   // Return the string representation of this version.
   const std::string GetString() const;
 
   const std::vector<uint32_t>& components() const { return components_; }
 
  private:
   std::vector<uint32_t> components_;
 };
 
+BASE_EXPORT bool operator==(const Version& v1, const Version& v2);
+BASE_EXPORT bool operator!=(const Version& v1, const Version& v2);
+BASE_EXPORT bool operator<(const Version& v1, const Version& v2);
+BASE_EXPORT bool operator<=(const Version& v1, const Version& v2);
+BASE_EXPORT bool operator>(const Version& v1, const Version& v2);
+BASE_EXPORT bool operator>=(const Version& v1, const Version& v2);
+BASE_EXPORT std::ostream& operator<<(std::ostream& stream, const Version& v);
+
 }  // namespace base
 
 // TODO(xhwang) remove this when all users are updated to explicitly use the
 // namespace
 using base::Version;
 
 #endif  // BASE_VERSION_H_