COMP: Use C++11 override directly

The override support in C++11 is required so avoid aliasing
this feature.  Compilers that do not support the override keyword
are no longer supported.

include/json/config.h

@@ -89,12 +89,11 @@
 // In c++11 the override keyword allows you to explicitly define that a function
 // is intended to override the base-class version.  This makes the code more
 // manageable and fixes a set of common hard-to-find bugs.
+#define JSONCPP_OVERRIDE override    // Define maintained for backwards compatibility of external tools.  C++11 should be used directly in JSONCPP
 #if __cplusplus >= 201103L
-#define JSONCPP_OVERRIDE override
 #define JSONCPP_NOEXCEPT noexcept
 #define JSONCPP_OP_EXPLICIT explicit
 #elif defined(_MSC_VER) && _MSC_VER > 1600 && _MSC_VER < 1900
-#define JSONCPP_OVERRIDE override
 #define JSONCPP_NOEXCEPT throw()
 #if _MSC_VER >= 1800 // MSVC 2013
 #define JSONCPP_OP_EXPLICIT explicit
@@ -102,11 +101,9 @@
 #define JSONCPP_OP_EXPLICIT
 #endif
 #elif defined(_MSC_VER) && _MSC_VER >= 1900
-#define JSONCPP_OVERRIDE override
 #define JSONCPP_NOEXCEPT noexcept
 #define JSONCPP_OP_EXPLICIT explicit
 #else
-#define JSONCPP_OVERRIDE
 #define JSONCPP_NOEXCEPT throw()
 #define JSONCPP_OP_EXPLICIT
 #endif

include/json/reader.h

@@ -347,9 +347,9 @@ public:
   Json::Value settings_;
 
   CharReaderBuilder();
-  ~CharReaderBuilder() JSONCPP_OVERRIDE;
+  ~CharReaderBuilder() override;
 
-  CharReader* newCharReader() const JSONCPP_OVERRIDE;
+  CharReader* newCharReader() const override;
 
   /** \return true if 'settings' are legal and consistent;
    *   otherwise, indicate bad settings via 'invalid'.

include/json/value.h

@@ -55,8 +55,8 @@ namespace Json {
 class JSON_API Exception : public std::exception {
 public:
   Exception(JSONCPP_STRING const& msg);
-  ~Exception() JSONCPP_NOEXCEPT JSONCPP_OVERRIDE;
+  ~Exception() JSONCPP_NOEXCEPT override;
-  char const* what() const JSONCPP_NOEXCEPT JSONCPP_OVERRIDE;
+  char const* what() const JSONCPP_NOEXCEPT override;
 
 protected:
   JSONCPP_STRING msg_;

include/json/writer.h

@@ -119,12 +119,12 @@ public:
   Json::Value settings_;
 
   StreamWriterBuilder();
-  ~StreamWriterBuilder() JSONCPP_OVERRIDE;
+  ~StreamWriterBuilder() override;
 
   /**
    * \throw std::exception if something goes wrong (e.g. invalid settings)
    */
-  StreamWriter* newStreamWriter() const JSONCPP_OVERRIDE;
+  StreamWriter* newStreamWriter() const override;
 
   /** \return true if 'settings' are legal and consistent;
    *   otherwise, indicate bad settings via 'invalid'.
@@ -169,7 +169,7 @@ class JSONCPP_DEPRECATED("Use StreamWriterBuilder instead") JSON_API FastWriter
     : public Writer {
 public:
   FastWriter();
-  ~FastWriter() JSONCPP_OVERRIDE {}
+  ~FastWriter() override {}
 
   void enableYAMLCompatibility();
 
@@ -183,7 +183,7 @@ public:
   void omitEndingLineFeed();
 
 public: // overridden from Writer
-  JSONCPP_STRING write(const Value& root) JSONCPP_OVERRIDE;
+  JSONCPP_STRING write(const Value& root) override;
 
 private:
   void writeValue(const Value& value);
@@ -229,14 +229,14 @@ class JSONCPP_DEPRECATED("Use StreamWriterBuilder instead") JSON_API
     StyledWriter : public Writer {
 public:
   StyledWriter();
-  ~StyledWriter() JSONCPP_OVERRIDE {}
+  ~StyledWriter() override {}
 
 public: // overridden from Writer
   /** \brief Serialize a Value in <a HREF="http://www.json.org">JSON</a> format.
    * \param root Value to serialize.
    * \return String containing the JSON document that represents the root value.
    */
-  JSONCPP_STRING write(const Value& root) JSONCPP_OVERRIDE;
+  JSONCPP_STRING write(const Value& root) override;
 
 private:
   void writeValue(const Value& value);

src/lib_json/json_reader.cpp

@@ -1907,7 +1907,7 @@ public:
   bool parse(char const* beginDoc,
              char const* endDoc,
              Value* root,
-             JSONCPP_STRING* errs) JSONCPP_OVERRIDE {
+             JSONCPP_STRING* errs) override {
     bool ok = reader_.parse(beginDoc, endDoc, *root, collectComments_);
     if (errs) {
       *errs = reader_.getFormattedErrorMessages();

src/lib_json/json_writer.cpp

@@ -880,7 +880,7 @@ struct BuiltStyledStreamWriter : public StreamWriter {
                           bool useSpecialFloats,
                           unsigned int precision,
                           PrecisionType precisionType);
-  int write(Value const& root, JSONCPP_OSTREAM* sout) JSONCPP_OVERRIDE;
+  int write(Value const& root, JSONCPP_OSTREAM* sout) override;
 
 private:
   void writeValue(Value const& value);

src/test_lib_json/jsontest.h

@@ -262,10 +262,10 @@ TestResult& checkStringEqual(TestResult& result,
     }                                                                          \
                                                                                \
   public: /* overridden from TestCase */                                       \
-    const char* testName() const JSONCPP_OVERRIDE {                            \
+    const char* testName() const override {                                    \
       return #FixtureType "/" #name;                                           \
     }                                                                          \
-    void runTestCase() JSONCPP_OVERRIDE;                                       \
+    void runTestCase() override;                                               \
   };                                                                           \
                                                                                \
   void Test##FixtureType##name::runTestCase()