GenericPointer< ValueType, Allocator >::PercentDecodeStream Class Reference

A helper stream for decoding a percent-encoded sequence into code unit. More...

Public Types
typedef ValueType::Ch	Ch

Public Member Functions
	PercentDecodeStream (const Ch *source, const Ch *end)
	Constructor. More...
Ch	Take ()
size_t	Tell () const
bool	IsValid () const

Private Attributes
const Ch *	src_
	Current read position. More...
const Ch *	head_
	Original head of the string. More...
const Ch *	end_
	Past-the-end position. More...
bool	valid_
	Whether the parsing is valid. More...

Detailed Description

template<typename ValueType, typename Allocator = CrtAllocator>
class GenericPointer< ValueType, Allocator >::PercentDecodeStream

A helper stream for decoding a percent-encoded sequence into code unit.

This stream decodes XY triplet into code unit (0-255). If it encounters invalid characters, it sets output code unit as 0 and mark invalid, and to be checked by IsValid().

Definition at line 983 of file pointer.h.

Member Typedef Documentation

template<typename ValueType, typename Allocator = CrtAllocator>

typedef ValueType::Ch GenericPointer< ValueType, Allocator >::PercentDecodeStream::Ch

Definition at line 985 of file pointer.h.

Constructor & Destructor Documentation

template<typename ValueType, typename Allocator = CrtAllocator>

GenericPointer< ValueType, Allocator >::PercentDecodeStream::PercentDecodeStream ( const Ch *  source, const Ch *  end  )

inline

Constructor.

Parameters

source	Start of the stream
end	Past-the-end of the stream.

Definition at line 992 of file pointer.h.

: src_(source), head_(source), end_(end), valid_(true) {}

Member Function Documentation

template<typename ValueType, typename Allocator = CrtAllocator>

bool GenericPointer< ValueType, Allocator >::PercentDecodeStream::IsValid ( ) const

inline

Definition at line 1017 of file pointer.h.

{ return valid_; }

template<typename ValueType, typename Allocator = CrtAllocator>

Ch GenericPointer< ValueType, Allocator >::PercentDecodeStream::Take ( )

inline

Definition at line 994 of file pointer.h.

                  {
            if (*src_ != '%' || src_ + 3 > end_) { // %XY triplet
                valid_ = false;
                return 0;
            }
            src_++;
            Ch c = 0;
            for (int j = 0; j < 2; j++) {
                c = static_cast<Ch>(c << 4);
                Ch h = *src_;
                if      (h >= '0' && h <= '9') c = static_cast<Ch>(c + h - '0');
                else if (h >= 'A' && h <= 'F') c = static_cast<Ch>(c + h - 'A' + 10);
                else if (h >= 'a' && h <= 'f') c = static_cast<Ch>(c + h - 'a' + 10);
                else {
                    valid_ = false;
                    return 0;
                }
                src_++;
            }
            return c;
        }

template<typename ValueType, typename Allocator = CrtAllocator>

size_t GenericPointer< ValueType, Allocator >::PercentDecodeStream::Tell ( ) const

inline

Definition at line 1016 of file pointer.h.

{ return static_cast<size_t>(src_ - head_); }

Member Data Documentation

template<typename ValueType, typename Allocator = CrtAllocator>

const Ch* GenericPointer< ValueType, Allocator >::PercentDecodeStream::end_

private

Past-the-end position.

Definition at line 1022 of file pointer.h.

template<typename ValueType, typename Allocator = CrtAllocator>

const Ch* GenericPointer< ValueType, Allocator >::PercentDecodeStream::head_

private

Original head of the string.

Definition at line 1021 of file pointer.h.

template<typename ValueType, typename Allocator = CrtAllocator>

const Ch* GenericPointer< ValueType, Allocator >::PercentDecodeStream::src_

private

Current read position.

Definition at line 1020 of file pointer.h.

template<typename ValueType, typename Allocator = CrtAllocator>

bool GenericPointer< ValueType, Allocator >::PercentDecodeStream::valid_

private

Whether the parsing is valid.

Definition at line 1023 of file pointer.h.

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

• art/rapidjson/pointer.h