RapidJSON configuration

Configuration macros for library features. More...

Macros
#define	RAPIDJSON_ALLOCATOR_DEFAULT_CHUNK_CAPACITY   (64 * 1024)
	User-defined kDefaultChunkCapacity definition. More...
#define	RAPIDJSON_DEFAULT_ALLOCATOR   ::RAPIDJSON_NAMESPACE::MemoryPoolAllocator<::RAPIDJSON_NAMESPACE::CrtAllocator>
	Allows to choose default allocator. More...
#define	RAPIDJSON_DEFAULT_STACK_ALLOCATOR   ::RAPIDJSON_NAMESPACE::CrtAllocator
	Allows to choose default stack allocator for Document. More...
#define	RAPIDJSON_VALUE_DEFAULT_OBJECT_CAPACITY   16
	User defined kDefaultObjectCapacity value. More...
#define	RAPIDJSON_VALUE_DEFAULT_ARRAY_CAPACITY   16
	User defined kDefaultArrayCapacity value. More...
#define	RAPIDJSON_MAJOR_VERSION   1
	Major version of RapidJSON in integer.
#define	RAPIDJSON_MINOR_VERSION   1
	Minor version of RapidJSON in integer.
#define	RAPIDJSON_PATCH_VERSION   0
	Patch version of RapidJSON in integer.
#define	RAPIDJSON_VERSION_STRING   RAPIDJSON_STRINGIFY(RAPIDJSON_MAJOR_VERSION.RAPIDJSON_MINOR_VERSION.RAPIDJSON_PATCH_VERSION)
	Version of RapidJSON in "<major>.<minor>.<patch>" string format.
#define	RAPIDJSON_NAMESPACE   rapidjson
	provide custom rapidjson namespace More...
#define	RAPIDJSON_NAMESPACE_BEGIN   namespace RAPIDJSON_NAMESPACE {
	provide custom rapidjson namespace (opening expression) More...
#define	RAPIDJSON_NAMESPACE_END   }
	provide custom rapidjson namespace (closing expression) More...
#define	RAPIDJSON_HAS_STDSTRING
	Enable RapidJSON support for std::string. More...
#define	RAPIDJSON_USE_MEMBERSMAP
	Enable RapidJSON support for object members handling in a std::multimap. More...
#define	RAPIDJSON_ALIGN(x)   (((x) + static_cast<size_t>(7u)) & ~static_cast<size_t>(7u))
	Data alignment of the machine. More...
#define	RAPIDJSON_48BITPOINTER_OPTIMIZATION   0
	Use only lower 48-bit address for some pointers. More...
#define	RAPIDJSON_ASSERT(x)   assert(x)
	Assertion. More...
#define	RAPIDJSON_LIKELY(x)   (x)
	Compiler branching hint for expression with high probability to be true. More...
#define	RAPIDJSON_UNLIKELY(x)   (x)
	Compiler branching hint for expression with low probability to be true. More...
#define	RAPIDJSON_NOEXCEPT_ASSERT(x)   RAPIDJSON_ASSERT(x)
	Assertion (in non-throwing contexts). More...
#define	RAPIDJSON_VALIDATE_DEFAULT_FLAGS   kValidateNoFlags
	User-defined kValidateDefaultFlags definition. More...

Detailed Description

Configuration macros for library features.

Some RapidJSON features are configurable to adapt the library to a wide variety of platforms, environments and usage scenarios. Most of the features can be configured in terms of overridden or predefined preprocessor macros at compile-time.

Some additional customization is available in the RapidJSON error handling APIs.

Note

These macros should be given on the compiler command-line (where applicable) to avoid inconsistent values when compiling different translation units of a single application.

Macro Definition Documentation

RAPIDJSON_48BITPOINTER_OPTIMIZATION

#define RAPIDJSON_48BITPOINTER_OPTIMIZATION   0

Use only lower 48-bit address for some pointers.

This optimization uses the fact that current X86-64 architecture only implement lower 48-bit virtual address. The higher 16-bit can be used for storing other data. GenericValue uses this optimization to reduce its size form 24 bytes to 16 bytes in 64-bit architecture.

RAPIDJSON_ALIGN

#define RAPIDJSON_ALIGN

(

x

)

(((x) + static_cast<size_t>(7u)) & ~static_cast<size_t>(7u))

Data alignment of the machine.

Parameters

x	pointer to align

Some machines require strict data alignment. The default is 8 bytes. User can customize by defining the RAPIDJSON_ALIGN function macro.

RAPIDJSON_ALLOCATOR_DEFAULT_CHUNK_CAPACITY

#define RAPIDJSON_ALLOCATOR_DEFAULT_CHUNK_CAPACITY   (64 * 1024)

User-defined kDefaultChunkCapacity definition.

User can define this as any size that is a power of 2.

RAPIDJSON_ASSERT

#define RAPIDJSON_ASSERT

(

x

)

assert(x)

Assertion.

By default, rapidjson uses C assert() for internal assertions. User can override it by defining RAPIDJSON_ASSERT(x) macro.

Note

Parsing errors are handled and can be customized by the RapidJSON error handling APIs.

RAPIDJSON_DEFAULT_ALLOCATOR

#define RAPIDJSON_DEFAULT_ALLOCATOR   ::RAPIDJSON_NAMESPACE::MemoryPoolAllocator<::RAPIDJSON_NAMESPACE::CrtAllocator>

Allows to choose default allocator.

User can define this to use CrtAllocator or MemoryPoolAllocator.

RAPIDJSON_DEFAULT_STACK_ALLOCATOR

#define RAPIDJSON_DEFAULT_STACK_ALLOCATOR   ::RAPIDJSON_NAMESPACE::CrtAllocator

Allows to choose default stack allocator for Document.

User can define this to use CrtAllocator or MemoryPoolAllocator.

RAPIDJSON_HAS_STDSTRING

#define RAPIDJSON_HAS_STDSTRING

Enable RapidJSON support for std::string.

By defining this preprocessor symbol to 1, several convenience functions for using rapidjson::GenericValue with std::string are enabled, especially for construction and comparison.

RAPIDJSON_LIKELY

#define RAPIDJSON_LIKELY

(

x

)

(x)

Compiler branching hint for expression with high probability to be true.

Parameters

x	Boolean expression likely to be true.

RAPIDJSON_NAMESPACE

#define RAPIDJSON_NAMESPACE   rapidjson

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 RAPIDJSON_NAMESPACE to a custom name (e.g. MyRapidJSON) is sufficient. If multiple levels are needed, both RAPIDJSON_NAMESPACE_BEGIN and RAPIDJSON_NAMESPACE_END need to be defined as well:

// in some .cpp file
#define RAPIDJSON_NAMESPACE my::rapidjson
#define RAPIDJSON_NAMESPACE_BEGIN namespace my { namespace rapidjson {
#define RAPIDJSON_NAMESPACE_END   } }
#include "rapidjson/..."

See also

rapidjson

RAPIDJSON_NAMESPACE_BEGIN

#define RAPIDJSON_NAMESPACE_BEGIN   namespace RAPIDJSON_NAMESPACE {

provide custom rapidjson namespace (opening expression)

See also

RAPIDJSON_NAMESPACE

RAPIDJSON_NAMESPACE_END

#define RAPIDJSON_NAMESPACE_END   }

provide custom rapidjson namespace (closing expression)

See also

RAPIDJSON_NAMESPACE

RAPIDJSON_NOEXCEPT_ASSERT

#define RAPIDJSON_NOEXCEPT_ASSERT

(

x

)

RAPIDJSON_ASSERT(x)

Assertion (in non-throwing contexts).

Some functions provide a noexcept guarantee, if the compiler supports it. In these cases, the RAPIDJSON_ASSERT macro cannot be overridden to throw an exception. This macro adds a separate customization point for such cases.

Defaults to C assert() (as RAPIDJSON_ASSERT), if noexcept is supported, and to RAPIDJSON_ASSERT otherwise.

RAPIDJSON_UNLIKELY

#define RAPIDJSON_UNLIKELY

(

x

)

(x)

Compiler branching hint for expression with low probability to be true.

Parameters

x	Boolean expression unlikely to be true.

RAPIDJSON_USE_MEMBERSMAP

#define RAPIDJSON_USE_MEMBERSMAP

Enable RapidJSON support for object members handling in a std::multimap.

By defining this preprocessor symbol to 1, rapidjson::GenericValue object members are stored in a std::multimap for faster lookup and deletion times, a trade off with a slightly slower insertion time and a small object allocat(or)ed memory overhead.

RAPIDJSON_VALIDATE_DEFAULT_FLAGS

#define RAPIDJSON_VALIDATE_DEFAULT_FLAGS   kValidateNoFlags

User-defined kValidateDefaultFlags definition.

User can define this as any ValidateFlag combinations.

RAPIDJSON_VALUE_DEFAULT_ARRAY_CAPACITY

#define RAPIDJSON_VALUE_DEFAULT_ARRAY_CAPACITY   16

User defined kDefaultArrayCapacity value.

User can define this as any natural number.

RAPIDJSON_VALUE_DEFAULT_OBJECT_CAPACITY

#define RAPIDJSON_VALUE_DEFAULT_OBJECT_CAPACITY   16

User defined kDefaultObjectCapacity value.

User can define this as any natural number.