BasicIStreamWrapper< StreamType > Class Template Reference

Wrapper of std::basic_istream into RapidJSON's Stream concept. More...

#include <istreamwrapper.h>

Public Types
typedef StreamType::char_type	Ch

Public Member Functions
	BasicIStreamWrapper (StreamType &stream)
Ch	Peek () const
Ch	Take ()
size_t	Tell () const
Ch *	PutBegin ()
void	Put (Ch)
void	Flush ()
size_t	PutEnd (Ch *)
const Ch *	Peek4 () const

Private Member Functions
	BasicIStreamWrapper (const BasicIStreamWrapper &)
BasicIStreamWrapper &	operator= (const BasicIStreamWrapper &)

Private Attributes
StreamType &	stream_
size_t	count_
	Number of characters read. Note: More...
Ch	peekBuffer_ [4]

Detailed Description

template<typename StreamType>
class BasicIStreamWrapper< StreamType >

Wrapper of std::basic_istream into RapidJSON's Stream concept.

The classes can be wrapped including but not limited to:

• std::istringstream
• std::stringstream
• std::wistringstream
• std::wstringstream
• std::ifstream
• std::fstream
• std::wifstream
• std::wfstream

Template Parameters

StreamType

Class derived from std::basic_istream.

Definition at line 48 of file istreamwrapper.h.

Member Typedef Documentation

template<typename StreamType >

typedef StreamType::char_type BasicIStreamWrapper< StreamType >::Ch

Definition at line 50 of file istreamwrapper.h.

Constructor & Destructor Documentation

template<typename StreamType >

BasicIStreamWrapper< StreamType >::BasicIStreamWrapper ( StreamType &  stream )

inline

Definition at line 51 of file istreamwrapper.h.

: stream_(stream), count_(), peekBuffer_() {}

template<typename StreamType >

BasicIStreamWrapper< StreamType >::BasicIStreamWrapper ( const BasicIStreamWrapper< StreamType > &  )

private

Member Function Documentation

template<typename StreamType >

void BasicIStreamWrapper< StreamType >::Flush ( )

inline

Definition at line 73 of file istreamwrapper.h.

{ RAPIDJSON_ASSERT(false); }

template<typename StreamType >

BasicIStreamWrapper& BasicIStreamWrapper< StreamType >::operator= ( const BasicIStreamWrapper< StreamType > &  )

private

template<typename StreamType >

Ch BasicIStreamWrapper< StreamType >::Peek ( ) const

inline

Definition at line 53 of file istreamwrapper.h.

                    { 
        typename StreamType::int_type c = stream_.peek();
        return RAPIDJSON_LIKELY(c != StreamType::traits_type::eof()) ? static_cast<Ch>(c) : static_cast<Ch>('\0');
    }

template<typename StreamType >

const Ch* BasicIStreamWrapper< StreamType >::Peek4 ( ) const

inline

Definition at line 77 of file istreamwrapper.h.

                            {
        RAPIDJSON_ASSERT(sizeof(Ch) == 1); // Only usable for byte stream.
        int i;
        bool hasError = false;
        for (i = 0; i < 4; ++i) {
            typename StreamType::int_type c = stream_.get();
            if (c == StreamType::traits_type::eof()) {
                hasError = true;
                stream_.clear();
                break;
            }
            peekBuffer_[i] = static_cast<Ch>(c);
        }
        for (--i; i >= 0; --i)
            stream_.putback(peekBuffer_[i]);
        return !hasError ? peekBuffer_ : 0;
    }

template<typename StreamType >

void BasicIStreamWrapper< StreamType >::Put ( Ch  )

inline

Definition at line 72 of file istreamwrapper.h.

{ RAPIDJSON_ASSERT(false); }

template<typename StreamType >

Ch* BasicIStreamWrapper< StreamType >::PutBegin ( )

inline

Definition at line 71 of file istreamwrapper.h.

{ RAPIDJSON_ASSERT(false); return 0; }

template<typename StreamType >

size_t BasicIStreamWrapper< StreamType >::PutEnd ( Ch *  )

inline

Definition at line 74 of file istreamwrapper.h.

{ RAPIDJSON_ASSERT(false); return 0; }

template<typename StreamType >

Ch BasicIStreamWrapper< StreamType >::Take ( )

inline

Definition at line 58 of file istreamwrapper.h.

              { 
        typename StreamType::int_type c = stream_.get();
        if (RAPIDJSON_LIKELY(c != StreamType::traits_type::eof())) {
            count_++;
            return static_cast<Ch>(c);
        }
        else
            return '\0';
    }

template<typename StreamType >

size_t BasicIStreamWrapper< StreamType >::Tell ( ) const

inline

Definition at line 69 of file istreamwrapper.h.

{ return count_; }

Member Data Documentation

template<typename StreamType >

size_t BasicIStreamWrapper< StreamType >::count_

private

Number of characters read. Note:

Definition at line 100 of file istreamwrapper.h.

template<typename StreamType >

Ch BasicIStreamWrapper< StreamType >::peekBuffer_[4]

mutableprivate

Definition at line 101 of file istreamwrapper.h.

template<typename StreamType >

StreamType& BasicIStreamWrapper< StreamType >::stream_

private

Definition at line 99 of file istreamwrapper.h.

---

The documentation for this class was generated from the following file:

• art/rapidjson/istreamwrapper.h