Merge pull request #193 from pah/feature/custom-namespace

Allow customization of RapidJSON namespace

.travis.yml

@@ -32,6 +32,7 @@ before_script:
 script:
   - make -C build/gmake -f test.make    config=${CONF}${BITS}
   - make -C build/gmake -f example.make config=${CONF}${BITS}
+  - if [ "$CONF" = "debug" ] && ( objdump -t -C intermediate/${CONF}/gmake/unittest/x${BITS}/namespacetest.o | grep rapidjson ) ; then echo "Symbol check failed!" ; false; fi
   - pushd bin
   -  ./unittest_${CONF}_x${BITS}_gmake
   - valgrind --leak-check=full --error-exitcode=1 ./unittest_${CONF}_x${BITS}_gmake

build/Doxyfile

@@ -1993,6 +1993,8 @@ INCLUDE_FILE_PATTERNS  =
 
 PREDEFINED             = \
 	RAPIDJSON_DOXYGEN_RUNNING \
+	RAPIDJSON_NAMESPACE_BEGIN="namespace rapidjson {" \
+	RAPIDJSON_NAMESPACE_END="}" \
 	RAPIDJSON_REMOVEFPTR_(x)=x \
 	RAPIDJSON_ENABLEIF_RETURN(cond,returntype)="RAPIDJSON_REMOVEFPTR_ returntype" \
 	RAPIDJSON_DISABLEIF_RETURN(cond,returntype)="RAPIDJSON_REMOVEFPTR_ returntype"

include/rapidjson/allocators.h

@@ -23,7 +23,7 @@
 
 #include "rapidjson.h"
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 ///////////////////////////////////////////////////////////////////////////////
 // Allocator
@@ -240,6 +240,6 @@ private:
     BaseAllocator* ownBaseAllocator_;   //!< base allocator created by this object.
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_ENCODINGS_H_

include/rapidjson/document.h

@@ -66,7 +66,7 @@ RAPIDJSON_DIAG_OFF(effc++)
 #include <utility> // std::move
 #endif
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 // Forward declaration.
 template <typename Encoding, typename Allocator>
@@ -1899,7 +1899,7 @@ GenericValue<Encoding,Allocator>::GenericValue(const GenericValue<Encoding,Sourc
     RawAssign(*d.stack_.template Pop<GenericValue>(1));
 }
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #if defined(_MSC_VER) || defined(__GNUC__)
 RAPIDJSON_DIAG_POP

include/rapidjson/encodedstream.h

@@ -28,7 +28,7 @@ RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(effc++)
 #endif
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Input byte stream wrapper with a statically bound encoding.
 /*!
@@ -281,7 +281,7 @@ private:
 
 #undef RAPIDJSON_ENCODINGS_FUNC
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #ifdef __GNUC__
 RAPIDJSON_DIAG_POP

include/rapidjson/encodings.h

@@ -32,7 +32,7 @@ RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(effc++)
 #endif
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 ///////////////////////////////////////////////////////////////////////////////
 // Encoding
@@ -621,7 +621,7 @@ struct Transcoder<Encoding, Encoding> {
     }
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #if defined(__GNUC__) || defined(_MSV_VER)
 RAPIDJSON_DIAG_POP

include/rapidjson/error/en.h

@@ -23,7 +23,7 @@
 
 #include "error.h"
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Maps error code of parsing into error message.
 /*!
@@ -66,6 +66,6 @@ inline const RAPIDJSON_ERROR_CHARTYPE* GetParseError_En(ParseErrorCode parseErro
     }
 }
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_ERROR_EN_H__

include/rapidjson/error/error.h

@@ -51,7 +51,7 @@
 #define RAPIDJSON_ERROR_STRING(x) x
 #endif
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 ///////////////////////////////////////////////////////////////////////////////
 // ParseErrorCode
@@ -145,6 +145,6 @@ private:
 */
 typedef const RAPIDJSON_ERROR_CHARTYPE* (*GetParseErrorFunc)(ParseErrorCode);
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_ERROR_ERROR_H__

include/rapidjson/filereadstream.h

@@ -24,7 +24,7 @@
 #include "rapidjson.h"
 #include <cstdio>
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! File byte stream for input using fread().
 /*!
@@ -89,6 +89,6 @@ private:
     bool eof_;
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_FILESTREAM_H_

include/rapidjson/filestream.h

@@ -24,7 +24,7 @@
 #include "rapidjson.h"
 #include <cstdio>
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! (Deprecated) Wrapper of C file stream for input or output.
 /*!
@@ -68,6 +68,6 @@ private:
     size_t count_;
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_FILESTREAM_H_

include/rapidjson/filewritestream.h

@@ -24,7 +24,7 @@
 #include "rapidjson.h"
 #include <cstdio>
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Wrapper of C file stream for input using fread().
 /*!
@@ -92,6 +92,6 @@ inline void PutN(FileWriteStream& stream, char c, size_t n) {
     stream.PutN(c, n);
 }
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_FILESTREAM_H_

include/rapidjson/internal/dtoa.h

@@ -34,7 +34,7 @@
 
 #include "itoa.h" // GetDigitsLut()
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 namespace internal {
 
 #ifdef __GNUC__
@@ -413,6 +413,6 @@ RAPIDJSON_DIAG_POP
 #endif
 
 } // namespace internal
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_DTOA_

include/rapidjson/internal/itoa.h

@@ -21,7 +21,7 @@
 #ifndef RAPIDJSON_ITOA_
 #define RAPIDJSON_ITOA_
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 namespace internal {
 
 inline const char* GetDigitsLut() {
@@ -301,6 +301,6 @@ inline char* i64toa(int64_t value, char* buffer) {
 }
 
 } // namespace internal
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_ITOA_

include/rapidjson/internal/meta.h

@@ -39,7 +39,7 @@ RAPIDJSON_DIAG_OFF(6334)
 #endif
 
 //@cond RAPIDJSON_INTERNAL
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 namespace internal {
 
 // Helper to wrap/convert arbitrary types to void, useful for arbitrary type matching
@@ -157,29 +157,29 @@ template <typename T> struct RemoveSfinaeTag;
 template <typename T> struct RemoveSfinaeTag<SfinaeTag&(*)(T)> { typedef T Type; };
 
 #define RAPIDJSON_REMOVEFPTR_(type) \
-    typename ::rapidjson::internal::RemoveSfinaeTag \
-        < ::rapidjson::internal::SfinaeTag&(*) type>::Type
+    typename ::RAPIDJSON_NAMESPACE::internal::RemoveSfinaeTag \
+        < ::RAPIDJSON_NAMESPACE::internal::SfinaeTag&(*) type>::Type
 
 #define RAPIDJSON_ENABLEIF(cond) \
-    typename ::rapidjson::internal::EnableIf \
+    typename ::RAPIDJSON_NAMESPACE::internal::EnableIf \
         <RAPIDJSON_REMOVEFPTR_(cond)>::Type * = NULL
 
 #define RAPIDJSON_DISABLEIF(cond) \
-    typename ::rapidjson::internal::DisableIf \
+    typename ::RAPIDJSON_NAMESPACE::internal::DisableIf \
         <RAPIDJSON_REMOVEFPTR_(cond)>::Type * = NULL
 
 #define RAPIDJSON_ENABLEIF_RETURN(cond,returntype) \
-    typename ::rapidjson::internal::EnableIf \
+    typename ::RAPIDJSON_NAMESPACE::internal::EnableIf \
         <RAPIDJSON_REMOVEFPTR_(cond), \
          RAPIDJSON_REMOVEFPTR_(returntype)>::Type
 
 #define RAPIDJSON_DISABLEIF_RETURN(cond,returntype) \
-    typename ::rapidjson::internal::DisableIf \
+    typename ::RAPIDJSON_NAMESPACE::internal::DisableIf \
         <RAPIDJSON_REMOVEFPTR_(cond), \
          RAPIDJSON_REMOVEFPTR_(returntype)>::Type
 
 } // namespace internal
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 //@endcond
 
 #if defined(__GNUC__) || defined(_MSC_VER)

include/rapidjson/internal/pow10.h

@@ -21,7 +21,7 @@
 #ifndef RAPIDJSON_POW10_
 #define RAPIDJSON_POW10_
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 namespace internal {
 
 //! Computes integer powers of 10 in double (10.0^n).
@@ -54,6 +54,6 @@ inline double Pow10(int n) {
 }
 
 } // namespace internal
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_POW10_

include/rapidjson/internal/stack.h

@@ -21,7 +21,7 @@
 #ifndef RAPIDJSON_INTERNAL_STACK_H_
 #define RAPIDJSON_INTERNAL_STACK_H_
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 namespace internal {
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -178,6 +178,6 @@ private:
 };
 
 } // namespace internal
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_STACK_H_

include/rapidjson/internal/strfunc.h

@@ -21,7 +21,7 @@
 #ifndef RAPIDJSON_INTERNAL_STRFUNC_H_
 #define RAPIDJSON_INTERNAL_STRFUNC_H_
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 namespace internal {
 
 //! Custom strlen() which works on different character types.
@@ -38,6 +38,6 @@ inline SizeType StrLen(const Ch* s) {
 }
 
 } // namespace internal
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_INTERNAL_STRFUNC_H_

include/rapidjson/memorybuffer.h

@@ -24,7 +24,7 @@
 #include "rapidjson.h"
 #include "internal/stack.h"
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Represents an in-memory output byte stream.
 /*!
@@ -71,6 +71,6 @@ inline void PutN(MemoryBuffer& memoryBuffer, char c, size_t n) {
     std::memset(memoryBuffer.stack_.Push<char>(n), c, n * sizeof(c));
 }
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_MEMORYBUFFER_H_

include/rapidjson/memorystream.h

@@ -23,7 +23,7 @@
 
 #include "rapidjson.h"
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Represents an in-memory input byte stream.
 /*!
@@ -62,6 +62,6 @@ struct MemoryStream {
     size_t size_;       //!< Size of the stream.
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_MEMORYBUFFER_H_

include/rapidjson/prettywriter.h

@@ -28,7 +28,7 @@ RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(effc++)
 #endif
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Writer with indentation and spacing.
 /*!
@@ -196,7 +196,7 @@ private:
     PrettyWriter& operator=(const PrettyWriter&);
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #ifdef __GNUC__
 RAPIDJSON_DIAG_POP

include/rapidjson/rapidjson.h

@@ -48,6 +48,52 @@
 #include <cstdlib>  // malloc(), realloc(), free(), size_t
 #include <cstring>  // memset(), memcpy(), memmove(), memcmp()
 
+///////////////////////////////////////////////////////////////////////////////
+// RAPIDJSON_NAMESPACE_(BEGIN|END)
+/*! \def RAPIDJSON_NAMESPACE
+    \ingroup RAPIDJSON_CONFIG
+    \brief   provide custom rapidjson namespace
+
+    In order to avoid symbol clashes and/or "One Definition Rule" errors
+    between multiple inclusions of (different versions of) RapidJSON in
+    a single binary, users can customize the name of the main RapidJSON
+    namespace.
+
+    In case of a single nesting level, defining \c RAPIDJSON_NAMESPACE
+    to a custom name (e.g. \c MyRapidJSON) is sufficient.  If multiple
+    levels are needed, both \ref RAPIDJSON_NAMESPACE_BEGIN and \ref
+    RAPIDJSON_NAMESPACE_END need to be defined as well:
+
+    \code
+    // in some .cpp file
+    #define RAPIDJSON_NAMESPACE my::rapidjson
+    #define RAPIDJSON_NAMESPACE_BEGIN namespace my { namespace rapidjson {
+    #define RAPIDJSON_NAMESPACE_END   } }
+    #include "rapidjson/..."
+    \endcode
+
+    \see rapidjson
+ */
+/*! \def RAPIDJSON_NAMESPACE_BEGIN
+    \ingroup RAPIDJSON_CONFIG
+    \brief   provide custom rapidjson namespace (opening expression)
+    \see RAPIDJSON_NAMESPACE
+*/
+/*! \def RAPIDJSON_NAMESPACE_END
+    \ingroup RAPIDJSON_CONFIG
+    \brief   provide custom rapidjson namespace (closing expression)
+    \see RAPIDJSON_NAMESPACE
+*/
+#ifndef RAPIDJSON_NAMESPACE
+#define RAPIDJSON_NAMESPACE rapidjson
+#endif
+#ifndef RAPIDJSON_NAMESPACE_BEGIN
+#define RAPIDJSON_NAMESPACE_BEGIN namespace RAPIDJSON_NAMESPACE {
+#endif
+#ifndef RAPIDJSON_NAMESPACE_END
+#define RAPIDJSON_NAMESPACE_END }
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////
 // RAPIDJSON_NO_INT64DEFINE
 
@@ -238,20 +284,20 @@
 #ifdef RAPIDJSON_DOXYGEN_RUNNING
 #define RAPIDJSON_NO_SIZETYPEDEFINE
 #endif
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 //! Size type (for string lengths, array sizes, etc.)
 /*! RapidJSON uses 32-bit array/string indices even on 64-bit platforms,
     instead of using \c size_t. Users may override the SizeType by defining
     \ref RAPIDJSON_NO_SIZETYPEDEFINE.
 */
 typedef unsigned SizeType;
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 #endif
 
 // always import std::size_t to rapidjson namespace
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 using std::size_t;
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 ///////////////////////////////////////////////////////////////////////////////
 // RAPIDJSON_ASSERT
@@ -275,12 +321,11 @@ using std::size_t;
 // Adopt from boost
 #ifndef RAPIDJSON_STATIC_ASSERT
 //!@cond RAPIDJSON_HIDDEN_FROM_DOXYGEN
-namespace rapidjson {
-
+RAPIDJSON_NAMESPACE_BEGIN
 template <bool x> struct STATIC_ASSERTION_FAILURE;
 template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
 template<int x> struct StaticAssertTest {};
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #define RAPIDJSON_JOIN(X, Y) RAPIDJSON_DO_JOIN(X, Y)
 #define RAPIDJSON_DO_JOIN(X, Y) RAPIDJSON_DO_JOIN2(X, Y)
@@ -298,8 +343,9 @@ template<int x> struct StaticAssertTest {};
     \param x compile-time condition
     \hideinitializer
  */
-#define RAPIDJSON_STATIC_ASSERT(x) typedef ::rapidjson::StaticAssertTest<\
-    sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(x) >)>\
+#define RAPIDJSON_STATIC_ASSERT(x) \
+    typedef ::RAPIDJSON_NAMESPACE::StaticAssertTest< \
+      sizeof(::RAPIDJSON_NAMESPACE::STATIC_ASSERTION_FAILURE<bool(x) >)> \
     RAPIDJSON_JOIN(StaticAssertTypedef, __LINE__) RAPIDJSON_STATIC_ASSERT_UNUSED_ATTRIBUTE
 #endif
 
@@ -418,8 +464,11 @@ template<int x> struct StaticAssertTest {};
 #include "allocators.h"
 #include "encodings.h"
 
-//! main RapidJSON namespace
-namespace rapidjson {
+/*! \namespace rapidjson
+    \brief main RapidJSON namespace
+    \see RAPIDJSON_NAMESPACE
+*/
+RAPIDJSON_NAMESPACE_BEGIN
 
 ///////////////////////////////////////////////////////////////////////////////
 //  Stream
@@ -574,6 +623,6 @@ enum Type {
     kNumberType = 6     //!< number
 };
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_RAPIDJSON_H_

include/rapidjson/reader.h

@@ -116,7 +116,7 @@ RAPIDJSON_DIAG_OFF(4702)  // unreachable code
 
 #include "error/error.h" // ParseErrorCode, ParseResult
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 ///////////////////////////////////////////////////////////////////////////////
 // ParseFlag
@@ -1360,7 +1360,7 @@ private:
 //! Reader with UTF8 encoding and default allocator.
 typedef GenericReader<UTF8<>, UTF8<> > Reader;
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #ifdef _MSC_VER
 RAPIDJSON_DIAG_POP

include/rapidjson/stringbuffer.h

@@ -24,7 +24,7 @@
 #include "rapidjson.h"
 #include "internal/stack.h"
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! Represents an in-memory output stream.
 /*!
@@ -74,6 +74,6 @@ inline void PutN(GenericStringBuffer<UTF8<> >& stream, char c, size_t n) {
     std::memset(stream.stack_.Push<char>(n), c, n * sizeof(c));
 }
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #endif // RAPIDJSON_STRINGBUFFER_H_

include/rapidjson/writer.h

@@ -34,7 +34,7 @@ RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
 #endif
 
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
 
 //! JSON writer
 /*! Writer implements the concept Handler.
@@ -380,7 +380,7 @@ inline bool Writer<StringBuffer>::WriteDouble(double d) {
     return true;
 }
 
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
 
 #ifdef _MSC_VER
 RAPIDJSON_DIAG_POP

test/unittest/namespacetest.cpp

+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include "unittest.h"
+
+// test another instantiation of RapidJSON in a different namespace 
+
+#define RAPIDJSON_NAMESPACE my::rapid::json
+#define RAPIDJSON_NAMESPACE_BEGIN namespace my { namespace rapid { namespace json {
+#define RAPIDJSON_NAMESPACE_END } } }
+
+// include lots of RapidJSON files
+
+#include "rapidjson/document.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/filewritestream.h"
+#include "rapidjson/encodedstream.h"
+#include "rapidjson/stringbuffer.h"
+
+static const char json[] = "{\"hello\":\"world\",\"t\":true,\"f\":false,\"n\":null,\"i\":123,\"pi\":3.1416,\"a\":[1,2,3,4]}";
+
+TEST(NamespaceTest,Using) {
+    using namespace RAPIDJSON_NAMESPACE;
+    typedef GenericDocument<UTF8<>, CrtAllocator> DocumentType;
+    DocumentType doc;
+
+    doc.Parse(json);
+    EXPECT_TRUE(!doc.HasParseError());
+}
+
+TEST(NamespaceTest,Direct) {
+    typedef RAPIDJSON_NAMESPACE::Document Document;
+    typedef RAPIDJSON_NAMESPACE::Reader Reader;
+    typedef RAPIDJSON_NAMESPACE::StringStream StringStream;
+    typedef RAPIDJSON_NAMESPACE::StringBuffer StringBuffer;
+    typedef RAPIDJSON_NAMESPACE::Writer<StringBuffer> WriterType;
+
+    StringStream s(json);
+    StringBuffer buffer;
+    WriterType writer(buffer);
+    buffer.ShrinkToFit();
+    Reader reader;
+    reader.Parse(s, writer);
+
+    EXPECT_STREQ(json, buffer.GetString());
+    EXPECT_EQ(sizeof(json)-1, buffer.GetSize());
+    EXPECT_TRUE(writer.IsComplete());
+
+    Document doc;
+    doc.Parse(buffer.GetString());
+    EXPECT_TRUE(!doc.HasParseError());
+
+    buffer.Clear();
+    writer.Reset(buffer);
+    doc.Accept(writer);
+    EXPECT_STREQ(json, buffer.GetString());
+    EXPECT_TRUE(writer.IsComplete());
+}