1 // Tencent is pleased to support the open source community by making RapidJSON available.
2 //
3 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
4 //
5 // Licensed under the MIT License (the "License"); you may not use this file except
6 // in compliance with the License. You may obtain a copy of the License at
7 //
8 // http://opensource.org/licenses/MIT
9 //
10 // Unless required by applicable law or agreed to in writing, software distributed
11 // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
12 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
13 // specific language governing permissions and limitations under the License.
14 
15 #ifndef RAPIDJSON_RAPIDJSON_H_
16 #define RAPIDJSON_RAPIDJSON_H_
17 
18 /*!\file rapidjson.h
19     \brief common definitions and configuration
20 
21     \see RAPIDJSON_CONFIG
22  */
23 
24 /*! \defgroup RAPIDJSON_CONFIG RapidJSON configuration
25     \brief Configuration macros for library features
26 
27     Some RapidJSON features are configurable to adapt the library to a wide
28     variety of platforms, environments and usage scenarios.  Most of the
29     features can be configured in terms of overriden or predefined
30     preprocessor macros at compile-time.
31 
32     Some additional customization is available in the \ref RAPIDJSON_ERRORS APIs.
33 
34     \note These macros should be given on the compiler command-line
35           (where applicable)  to avoid inconsistent values when compiling
36           different translation units of a single application.
37  */
38 
39 #include <cstdlib>  // malloc(), realloc(), free(), size_t
40 #include <cstring>  // memset(), memcpy(), memmove(), memcmp()
41 
42 
43 //----------------------------------------------------------------------------
44 // MOD FOR CONDUIT: ignore clang macro warning for rapidjson
45 // ---------------------------------------------------------------------------
46 //---------------------------------------------------------------------------//
47 #ifdef __clang__
48 #pragma clang diagnostic push
49 #pragma clang diagnostic ignored "-Wexpansion-to-defined"
50 #endif
51 //---------------------------------------------------------------------------//
52 
53 ///////////////////////////////////////////////////////////////////////////////
54 // RAPIDJSON_VERSION_STRING
55 //
56 // ALWAYS synchronize the following 3 macros with corresponding variables in /CMakeLists.txt.
57 //
58 
59 //!@cond RAPIDJSON_HIDDEN_FROM_DOXYGEN
60 // token stringification
61 #define RAPIDJSON_STRINGIFY(x) RAPIDJSON_DO_STRINGIFY(x)
62 #define RAPIDJSON_DO_STRINGIFY(x) #x
63 //!@endcond
64 
65 /*! \def RAPIDJSON_MAJOR_VERSION
66     \ingroup RAPIDJSON_CONFIG
67     \brief Major version of RapidJSON in integer.
68 */
69 /*! \def RAPIDJSON_MINOR_VERSION
70     \ingroup RAPIDJSON_CONFIG
71     \brief Minor version of RapidJSON in integer.
72 */
73 /*! \def RAPIDJSON_PATCH_VERSION
74     \ingroup RAPIDJSON_CONFIG
75     \brief Patch version of RapidJSON in integer.
76 */
77 /*! \def RAPIDJSON_VERSION_STRING
78     \ingroup RAPIDJSON_CONFIG
79     \brief Version of RapidJSON in "<major>.<minor>.<patch>" string format.
80 */
81 #define RAPIDJSON_MAJOR_VERSION 1
82 #define RAPIDJSON_MINOR_VERSION 0
83 #define RAPIDJSON_PATCH_VERSION 2
84 #define RAPIDJSON_VERSION_STRING \
85     RAPIDJSON_STRINGIFY(RAPIDJSON_MAJOR_VERSION.RAPIDJSON_MINOR_VERSION.RAPIDJSON_PATCH_VERSION)
86 
87 ///////////////////////////////////////////////////////////////////////////////
88 // RAPIDJSON_NAMESPACE_(BEGIN|END)
89 /*! \def RAPIDJSON_NAMESPACE
90     \ingroup RAPIDJSON_CONFIG
91     \brief   provide custom rapidjson namespace
92 
93     In order to avoid symbol clashes and/or "One Definition Rule" errors
94     between multiple inclusions of (different versions of) RapidJSON in
95     a single binary, users can customize the name of the main RapidJSON
96     namespace.
97 
98     In case of a single nesting level, defining \c RAPIDJSON_NAMESPACE
99     to a custom name (e.g. \c MyRapidJSON) is sufficient.  If multiple
100     levels are needed, both \ref RAPIDJSON_NAMESPACE_BEGIN and \ref
101     RAPIDJSON_NAMESPACE_END need to be defined as well:
102 
103     \code
104     // in some .cpp file
105     #define RAPIDJSON_NAMESPACE my::rapidjson
106     #define RAPIDJSON_NAMESPACE_BEGIN namespace my { namespace rapidjson {
107     #define RAPIDJSON_NAMESPACE_END   } }
108     #include "rapidjson/..."
109     \endcode
110 
111     \see rapidjson
112  */
113 /*! \def RAPIDJSON_NAMESPACE_BEGIN
114     \ingroup RAPIDJSON_CONFIG
115     \brief   provide custom rapidjson namespace (opening expression)
116     \see RAPIDJSON_NAMESPACE
117 */
118 /*! \def RAPIDJSON_NAMESPACE_END
119     \ingroup RAPIDJSON_CONFIG
120     \brief   provide custom rapidjson namespace (closing expression)
121     \see RAPIDJSON_NAMESPACE
122 */
123 #ifndef RAPIDJSON_NAMESPACE
124 //----------------------------------------------------------------------------
125 // MOD FOR CONDUIT: use custom namespace to avoid symbol collisions
126 // ---------------------------------------------------------------------------
127 #define RAPIDJSON_NAMESPACE conduit_rapidjson
128 #endif
129 #ifndef RAPIDJSON_NAMESPACE_BEGIN
130 #define RAPIDJSON_NAMESPACE_BEGIN namespace RAPIDJSON_NAMESPACE {
131 #endif
132 #ifndef RAPIDJSON_NAMESPACE_END
133 #define RAPIDJSON_NAMESPACE_END }
134 #endif
135 
136 ///////////////////////////////////////////////////////////////////////////////
137 // RAPIDJSON_NO_INT64DEFINE
138 
139 /*! \def RAPIDJSON_NO_INT64DEFINE
140     \ingroup RAPIDJSON_CONFIG
141     \brief Use external 64-bit integer types.
142 
143     RapidJSON requires the 64-bit integer types \c int64_t and  \c uint64_t types
144     to be available at global scope.
145 
146     If users have their own definition, define RAPIDJSON_NO_INT64DEFINE to
147     prevent RapidJSON from defining its own types.
148 */
149 #ifndef RAPIDJSON_NO_INT64DEFINE
150 //!@cond RAPIDJSON_HIDDEN_FROM_DOXYGEN
151 #ifdef _MSC_VER
152 #include "msinttypes/stdint.h"
153 #include "msinttypes/inttypes.h"
154 #else
155 // Other compilers should have this.
156 #include <stdint.h>
157 #include <inttypes.h>
158 #endif
159 //!@endcond
160 #ifdef RAPIDJSON_DOXYGEN_RUNNING
161 #define RAPIDJSON_NO_INT64DEFINE
162 #endif
163 #endif // RAPIDJSON_NO_INT64TYPEDEF
164 
165 ///////////////////////////////////////////////////////////////////////////////
166 // RAPIDJSON_FORCEINLINE
167 
168 #ifndef RAPIDJSON_FORCEINLINE
169 //!@cond RAPIDJSON_HIDDEN_FROM_DOXYGEN
170 #if defined(_MSC_VER) && !defined(NDEBUG)
171 #define RAPIDJSON_FORCEINLINE __forceinline
172 #elif defined(__GNUC__) && __GNUC__ >= 4 && !defined(NDEBUG)
173 #define RAPIDJSON_FORCEINLINE __attribute__((always_inline))
174 #else
175 #define RAPIDJSON_FORCEINLINE
176 #endif
177 //!@endcond
178 #endif // RAPIDJSON_FORCEINLINE
179 
180 ///////////////////////////////////////////////////////////////////////////////
181 // RAPIDJSON_ENDIAN
182 #define RAPIDJSON_LITTLEENDIAN  0   //!< Little endian machine
183 #define RAPIDJSON_BIGENDIAN     1   //!< Big endian machine
184 
185 //! Endianness of the machine.
186 /*!
187     \def RAPIDJSON_ENDIAN
188     \ingroup RAPIDJSON_CONFIG
189 
190     GCC 4.6 provided macro for detecting endianness of the target machine. But other
191     compilers may not have this. User can define RAPIDJSON_ENDIAN to either
192     \ref RAPIDJSON_LITTLEENDIAN or \ref RAPIDJSON_BIGENDIAN.
193 
194     Default detection implemented with reference to
195     \li https://gcc.gnu.org/onlinedocs/gcc-4.6.0/cpp/Common-Predefined-Macros.html
196     \li http://www.boost.org/doc/libs/1_42_0/boost/detail/endian.hpp
197 */
198 #ifndef RAPIDJSON_ENDIAN
199 // Detect with GCC 4.6's macro
200 #  ifdef __BYTE_ORDER__
201 #    if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
202 #      define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
203 #    elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
204 #      define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
205 #    else
206 #      error Unknown machine endianess detected. User needs to define RAPIDJSON_ENDIAN.
207 #    endif // __BYTE_ORDER__
208 // Detect with GLIBC's endian.h
209 #  elif defined(__GLIBC__)
210 #    include <endian.h>
211 #    if (__BYTE_ORDER == __LITTLE_ENDIAN)
212 #      define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
213 #    elif (__BYTE_ORDER == __BIG_ENDIAN)
214 #      define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
215 #    else
216 #      error Unknown machine endianess detected. User needs to define RAPIDJSON_ENDIAN.
217 #   endif // __GLIBC__
218 // Detect with _LITTLE_ENDIAN and _BIG_ENDIAN macro
219 #  elif defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
220 #    define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
221 #  elif defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)
222 #    define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
223 // Detect with architecture macros
224 #  elif defined(__sparc) || defined(__sparc__) || defined(_POWER) || defined(__powerpc__) || defined(__ppc__) || defined(__hpux) || defined(__hppa) || defined(_MIPSEB) || defined(_POWER) || defined(__s390__)
225 #    define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
226 #  elif defined(__i386__) || defined(__alpha__) || defined(__ia64) || defined(__ia64__) || defined(_M_IX86) || defined(_M_IA64) || defined(_M_ALPHA) || defined(__amd64) || defined(__amd64__) || defined(_M_AMD64) || defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || defined(__bfin__)
227 #    define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
228 #  elif defined(RAPIDJSON_DOXYGEN_RUNNING)
229 #    define RAPIDJSON_ENDIAN
230 #  else
231 #    error Unknown machine endianess detected. User needs to define RAPIDJSON_ENDIAN.
232 #  endif
233 #endif // RAPIDJSON_ENDIAN
234 
235 ///////////////////////////////////////////////////////////////////////////////
236 // RAPIDJSON_64BIT
237 
238 //! Whether using 64-bit architecture
239 #ifndef RAPIDJSON_64BIT
240 #if defined(__LP64__) || defined(_WIN64) || defined(__EMSCRIPTEN__)
241 #define RAPIDJSON_64BIT 1
242 #else
243 #define RAPIDJSON_64BIT 0
244 #endif
245 #endif // RAPIDJSON_64BIT
246 
247 ///////////////////////////////////////////////////////////////////////////////
248 // RAPIDJSON_ALIGN
249 
250 //! Data alignment of the machine.
251 /*! \ingroup RAPIDJSON_CONFIG
252     \param x pointer to align
253 
254     Some machines require strict data alignment. Currently the default uses 4 bytes
255     alignment. User can customize by defining the RAPIDJSON_ALIGN function macro.
256 */
257 #ifndef RAPIDJSON_ALIGN
258 #if RAPIDJSON_64BIT == 1
259 #define RAPIDJSON_ALIGN(x) (((x) + static_cast<uint64_t>(7u)) & ~static_cast<uint64_t>(7u))
260 #else
261 #define RAPIDJSON_ALIGN(x) (((x) + 3u) & ~3u)
262 #endif
263 #endif
264 
265 ///////////////////////////////////////////////////////////////////////////////
266 // RAPIDJSON_UINT64_C2
267 
268 //! Construct a 64-bit literal by a pair of 32-bit integer.
269 /*!
270     64-bit literal with or without ULL suffix is prone to compiler warnings.
271     UINT64_C() is C macro which cause compilation problems.
272     Use this macro to define 64-bit constants by a pair of 32-bit integer.
273 */
274 #ifndef RAPIDJSON_UINT64_C2
275 #define RAPIDJSON_UINT64_C2(high32, low32) ((static_cast<uint64_t>(high32) << 32) | static_cast<uint64_t>(low32))
276 #endif
277 
278 ///////////////////////////////////////////////////////////////////////////////
279 // RAPIDJSON_SSE2/RAPIDJSON_SSE42/RAPIDJSON_SIMD
280 
281 /*! \def RAPIDJSON_SIMD
282     \ingroup RAPIDJSON_CONFIG
283     \brief Enable SSE2/SSE4.2 optimization.
284 
285     RapidJSON supports optimized implementations for some parsing operations
286     based on the SSE2 or SSE4.2 SIMD extensions on modern Intel-compatible
287     processors.
288 
289     To enable these optimizations, two different symbols can be defined;
290     \code
291     // Enable SSE2 optimization.
292     #define RAPIDJSON_SSE2
293 
294     // Enable SSE4.2 optimization.
295     #define RAPIDJSON_SSE42
296     \endcode
297 
298     \c RAPIDJSON_SSE42 takes precedence, if both are defined.
299 
300     If any of these symbols is defined, RapidJSON defines the macro
301     \c RAPIDJSON_SIMD to indicate the availability of the optimized code.
302 */
303 #if defined(RAPIDJSON_SSE2) || defined(RAPIDJSON_SSE42) \
304     || defined(RAPIDJSON_DOXYGEN_RUNNING)
305 #define RAPIDJSON_SIMD
306 #endif
307 
308 ///////////////////////////////////////////////////////////////////////////////
309 // RAPIDJSON_NO_SIZETYPEDEFINE
310 
311 #ifndef RAPIDJSON_NO_SIZETYPEDEFINE
312 /*! \def RAPIDJSON_NO_SIZETYPEDEFINE
313     \ingroup RAPIDJSON_CONFIG
314     \brief User-provided \c SizeType definition.
315 
316     In order to avoid using 32-bit size types for indexing strings and arrays,
317     define this preprocessor symbol and provide the type rapidjson::SizeType
318     before including RapidJSON:
319     \code
320     #define RAPIDJSON_NO_SIZETYPEDEFINE
321     namespace rapidjson { typedef ::std::size_t SizeType; }
322     #include "rapidjson/..."
323     \endcode
324 
325     \see rapidjson::SizeType
326 */
327 #ifdef RAPIDJSON_DOXYGEN_RUNNING
328 #define RAPIDJSON_NO_SIZETYPEDEFINE
329 #endif
330 RAPIDJSON_NAMESPACE_BEGIN
331 //! Size type (for string lengths, array sizes, etc.)
332 /*! RapidJSON uses 32-bit array/string indices even on 64-bit platforms,
333     instead of using \c size_t. Users may override the SizeType by defining
334     \ref RAPIDJSON_NO_SIZETYPEDEFINE.
335 */
336 typedef unsigned SizeType;
337 RAPIDJSON_NAMESPACE_END
338 #endif
339 
340 // always import std::size_t to rapidjson namespace
341 RAPIDJSON_NAMESPACE_BEGIN
342 using std::size_t;
343 RAPIDJSON_NAMESPACE_END
344 
345 ///////////////////////////////////////////////////////////////////////////////
346 // RAPIDJSON_ASSERT
347 
348 //! Assertion.
349 /*! \ingroup RAPIDJSON_CONFIG
350     By default, rapidjson uses C \c assert() for internal assertions.
351     User can override it by defining RAPIDJSON_ASSERT(x) macro.
352 
353     \note Parsing errors are handled and can be customized by the
354           \ref RAPIDJSON_ERRORS APIs.
355 */
356 #ifndef RAPIDJSON_ASSERT
357 #include <cassert>
358 #define RAPIDJSON_ASSERT(x) assert(x)
359 #endif // RAPIDJSON_ASSERT
360 
361 ///////////////////////////////////////////////////////////////////////////////
362 // RAPIDJSON_STATIC_ASSERT
363 
364 // Adopt from boost
365 #ifndef RAPIDJSON_STATIC_ASSERT
366 //!@cond RAPIDJSON_HIDDEN_FROM_DOXYGEN
367 RAPIDJSON_NAMESPACE_BEGIN
368 template <bool x> struct STATIC_ASSERTION_FAILURE;
369 template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
370 template<int x> struct StaticAssertTest {};
371 RAPIDJSON_NAMESPACE_END
372 
373 #define RAPIDJSON_JOIN(X, Y) RAPIDJSON_DO_JOIN(X, Y)
374 #define RAPIDJSON_DO_JOIN(X, Y) RAPIDJSON_DO_JOIN2(X, Y)
375 #define RAPIDJSON_DO_JOIN2(X, Y) X##Y
376 
377 #if defined(__GNUC__)
378 #define RAPIDJSON_STATIC_ASSERT_UNUSED_ATTRIBUTE __attribute__((unused))
379 #else
380 #define RAPIDJSON_STATIC_ASSERT_UNUSED_ATTRIBUTE
381 #endif
382 //!@endcond
383 
384 /*! \def RAPIDJSON_STATIC_ASSERT
385     \brief (Internal) macro to check for conditions at compile-time
386     \param x compile-time condition
387     \hideinitializer
388  */
389 #define RAPIDJSON_STATIC_ASSERT(x) \
390     typedef ::RAPIDJSON_NAMESPACE::StaticAssertTest< \
391       sizeof(::RAPIDJSON_NAMESPACE::STATIC_ASSERTION_FAILURE<bool(x) >)> \
392     RAPIDJSON_JOIN(StaticAssertTypedef, __LINE__) RAPIDJSON_STATIC_ASSERT_UNUSED_ATTRIBUTE
393 #endif
394 
395 ///////////////////////////////////////////////////////////////////////////////
396 // Helpers
397 
398 //!@cond RAPIDJSON_HIDDEN_FROM_DOXYGEN
399 
400 #define RAPIDJSON_MULTILINEMACRO_BEGIN do {
401 #define RAPIDJSON_MULTILINEMACRO_END \
402 } while((void)0, 0)
403 
404 // adopted from Boost
405 #define RAPIDJSON_VERSION_CODE(x,y,z) \
406   (((x)*100000) + ((y)*100) + (z))
407 
408 ///////////////////////////////////////////////////////////////////////////////
409 // RAPIDJSON_DIAG_PUSH/POP, RAPIDJSON_DIAG_OFF
410 
411 #if defined(__GNUC__)
412 #define RAPIDJSON_GNUC \
413     RAPIDJSON_VERSION_CODE(__GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__)
414 #endif
415 
416 #if defined(__clang__) || (defined(RAPIDJSON_GNUC) && RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,2,0))
417 
418 #define RAPIDJSON_PRAGMA(x) _Pragma(RAPIDJSON_STRINGIFY(x))
419 #define RAPIDJSON_DIAG_PRAGMA(x) RAPIDJSON_PRAGMA(GCC diagnostic x)
420 #define RAPIDJSON_DIAG_OFF(x) \
421     RAPIDJSON_DIAG_PRAGMA(ignored RAPIDJSON_STRINGIFY(RAPIDJSON_JOIN(-W,x)))
422 
423 // push/pop support in Clang and GCC>=4.6
424 #if defined(__clang__) || (defined(RAPIDJSON_GNUC) && RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,6,0))
425 #define RAPIDJSON_DIAG_PUSH RAPIDJSON_DIAG_PRAGMA(push)
426 #define RAPIDJSON_DIAG_POP  RAPIDJSON_DIAG_PRAGMA(pop)
427 #else // GCC >= 4.2, < 4.6
428 #define RAPIDJSON_DIAG_PUSH /* ignored */
429 #define RAPIDJSON_DIAG_POP /* ignored */
430 #endif
431 
432 #elif defined(_MSC_VER)
433 
434 // pragma (MSVC specific)
435 #define RAPIDJSON_PRAGMA(x) __pragma(x)
436 #define RAPIDJSON_DIAG_PRAGMA(x) RAPIDJSON_PRAGMA(warning(x))
437 
438 #define RAPIDJSON_DIAG_OFF(x) RAPIDJSON_DIAG_PRAGMA(disable: x)
439 #define RAPIDJSON_DIAG_PUSH RAPIDJSON_DIAG_PRAGMA(push)
440 #define RAPIDJSON_DIAG_POP  RAPIDJSON_DIAG_PRAGMA(pop)
441 
442 #else
443 
444 #define RAPIDJSON_DIAG_OFF(x) /* ignored */
445 #define RAPIDJSON_DIAG_PUSH   /* ignored */
446 #define RAPIDJSON_DIAG_POP    /* ignored */
447 
448 #endif // RAPIDJSON_DIAG_*
449 
450 ///////////////////////////////////////////////////////////////////////////////
451 // C++11 features
452 
453 #ifndef RAPIDJSON_HAS_CXX11_RVALUE_REFS
454 #if defined(__clang__)
455 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS __has_feature(cxx_rvalue_references) && \
456     (defined(_LIBCPP_VERSION) || defined(__GLIBCXX__) && __GLIBCXX__ >= 20080306)
457 #elif (defined(RAPIDJSON_GNUC) && (RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,3,0)) && defined(__GXX_EXPERIMENTAL_CXX0X__)) || \
458       (defined(_MSC_VER) && _MSC_VER >= 1600)
459 
460 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS 1
461 #else
462 #define RAPIDJSON_HAS_CXX11_RVALUE_REFS 0
463 #endif
464 #endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS
465 
466 #ifndef RAPIDJSON_HAS_CXX11_NOEXCEPT
467 #if defined(__clang__)
468 #define RAPIDJSON_HAS_CXX11_NOEXCEPT __has_feature(cxx_noexcept)
469 #elif (defined(RAPIDJSON_GNUC) && (RAPIDJSON_GNUC >= RAPIDJSON_VERSION_CODE(4,6,0)) && defined(__GXX_EXPERIMENTAL_CXX0X__))
470 //    (defined(_MSC_VER) && _MSC_VER >= ????) // not yet supported
471 #define RAPIDJSON_HAS_CXX11_NOEXCEPT 1
472 #else
473 #define RAPIDJSON_HAS_CXX11_NOEXCEPT 0
474 #endif
475 #endif
476 #if RAPIDJSON_HAS_CXX11_NOEXCEPT
477 #define RAPIDJSON_NOEXCEPT noexcept
478 #else
479 #define RAPIDJSON_NOEXCEPT /* noexcept */
480 #endif // RAPIDJSON_HAS_CXX11_NOEXCEPT
481 
482 // no automatic detection, yet
483 #ifndef RAPIDJSON_HAS_CXX11_TYPETRAITS
484 #define RAPIDJSON_HAS_CXX11_TYPETRAITS 0
485 #endif
486 
487 //!@endcond
488 
489 ///////////////////////////////////////////////////////////////////////////////
490 // new/delete
491 
492 #ifndef RAPIDJSON_NEW
493 ///! customization point for global \c new
494 #define RAPIDJSON_NEW(x) new x
495 #endif
496 #ifndef RAPIDJSON_DELETE
497 ///! customization point for global \c delete
498 #define RAPIDJSON_DELETE(x) delete x
499 #endif
500 
501 ///////////////////////////////////////////////////////////////////////////////
502 // Allocators and Encodings
503 
504 #include "allocators.h"
505 #include "encodings.h"
506 
507 /*! \namespace rapidjson
508     \brief main RapidJSON namespace
509     \see RAPIDJSON_NAMESPACE
510 */
511 RAPIDJSON_NAMESPACE_BEGIN
512 
513 ///////////////////////////////////////////////////////////////////////////////
514 //  Stream
515 
516 /*! \class rapidjson::Stream
517     \brief Concept for reading and writing characters.
518 
519     For read-only stream, no need to implement PutBegin(), Put(), Flush() and PutEnd().
520 
521     For write-only stream, only need to implement Put() and Flush().
522 
523 \code
524 concept Stream {
525     typename Ch;    //!< Character type of the stream.
526 
527     //! Read the current character from stream without moving the read cursor.
528     Ch Peek() const;
529 
530     //! Read the current character from stream and moving the read cursor to next character.
531     Ch Take();
532 
533     //! Get the current read cursor.
534     //! \return Number of characters read from start.
535     size_t Tell();
536 
537     //! Begin writing operation at the current read pointer.
538     //! \return The begin writer pointer.
539     Ch* PutBegin();
540 
541     //! Write a character.
542     void Put(Ch c);
543 
544     //! Flush the buffer.
545     void Flush();
546 
547     //! End the writing operation.
548     //! \param begin The begin write pointer returned by PutBegin().
549     //! \return Number of characters written.
550     size_t PutEnd(Ch* begin);
551 }
552 \endcode
553 */
554 
555 //! Provides additional information for stream.
556 /*!
557     By using traits pattern, this type provides a default configuration for stream.
558     For custom stream, this type can be specialized for other configuration.
559     See TEST(Reader, CustomStringStream) in readertest.cpp for example.
560 */
561 template<typename Stream>
562 struct StreamTraits {
563     //! Whether to make local copy of stream for optimization during parsing.
564     /*!
565         By default, for safety, streams do not use local copy optimization.
566         Stream that can be copied fast should specialize this, like StreamTraits<StringStream>.
567     */
568     enum { copyOptimization = 0 };
569 };
570 
571 //! Put N copies of a character to a stream.
572 template<typename Stream, typename Ch>
573 inline void PutN(Stream& stream, Ch c, size_t n) {
574     for (size_t i = 0; i < n; i++)
575         stream.Put(c);
576 }
577 
578 ///////////////////////////////////////////////////////////////////////////////
579 // StringStream
580 
581 //! Read-only string stream.
582 /*! \note implements Stream concept
583 */
584 template <typename Encoding>
585 struct GenericStringStream {
586     typedef typename Encoding::Ch Ch;
587 
588     GenericStringStream(const Ch *src) : src_(src), head_(src) {}
589 
590     Ch Peek() const { return *src_; }
591     Ch Take() { return *src_++; }
592     size_t Tell() const { return static_cast<size_t>(src_ - head_); }
593 
594     Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
595     void Put(Ch) { RAPIDJSON_ASSERT(false); }
596     void Flush() { RAPIDJSON_ASSERT(false); }
597     size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }
598 
599     const Ch* src_;     //!< Current read position.
600     const Ch* head_;    //!< Original head of the string.
601 };
602 
603 template <typename Encoding>
604 struct StreamTraits<GenericStringStream<Encoding> > {
605     enum { copyOptimization = 1 };
606 };
607 
608 //! String stream with UTF8 encoding.
609 typedef GenericStringStream<UTF8<> > StringStream;
610 
611 ///////////////////////////////////////////////////////////////////////////////
612 // InsituStringStream
613 
614 //! A read-write string stream.
615 /*! This string stream is particularly designed for in-situ parsing.
616     \note implements Stream concept
617 */
618 template <typename Encoding>
619 struct GenericInsituStringStream {
620     typedef typename Encoding::Ch Ch;
621 
622     GenericInsituStringStream(Ch *src) : src_(src), dst_(0), head_(src) {}
623 
624     // Read
625     Ch Peek() { return *src_; }
626     Ch Take() { return *src_++; }
627     size_t Tell() { return static_cast<size_t>(src_ - head_); }
628 
629     // Write
630     void Put(Ch c) { RAPIDJSON_ASSERT(dst_ != 0); *dst_++ = c; }
631 
632     Ch* PutBegin() { return dst_ = src_; }
633     size_t PutEnd(Ch* begin) { return static_cast<size_t>(dst_ - begin); }
634     void Flush() {}
635 
636     Ch* Push(size_t count) { Ch* begin = dst_; dst_ += count; return begin; }
637     void Pop(size_t count) { dst_ -= count; }
638 
639     Ch* src_;
640     Ch* dst_;
641     Ch* head_;
642 };
643 
644 template <typename Encoding>
645 struct StreamTraits<GenericInsituStringStream<Encoding> > {
646     enum { copyOptimization = 1 };
647 };
648 
649 //! Insitu string stream with UTF8 encoding.
650 typedef GenericInsituStringStream<UTF8<> > InsituStringStream;
651 
652 ///////////////////////////////////////////////////////////////////////////////
653 // Type
654 
655 //! Type of JSON value
656 enum Type {
657     kNullType = 0,      //!< null
658     kFalseType = 1,     //!< false
659     kTrueType = 2,      //!< true
660     kObjectType = 3,    //!< object
661     kArrayType = 4,     //!< array
662     kStringType = 5,    //!< string
663     kNumberType = 6     //!< number
664 };
665 
666 RAPIDJSON_NAMESPACE_END
667 
668 //----------------------------------------------------------------------------
669 // MOD FOR CONDUIT: ignore clang macro warning for rapidjson
670 // ---------------------------------------------------------------------------
671 //---------------------------------------------------------------------------//
672 #ifdef __clang__
673 #pragma clang diagnostic pop
674 #endif
675 //---------------------------------------------------------------------------//
676 
677 
678 
679 #endif // RAPIDJSON_RAPIDJSON_H_
680