mtcore::RuneIterator< T > Struct Template Reference

Iterates over runes of utf8 sequences (char, char_t) More...

#include <byte_endian.hpp>

Inheritance diagram for mtcore::RuneIterator< T >:

Collaboration diagram for mtcore::RuneIterator< T >:

Public Types
using	IterElem = Rune

Public Member Functions
Optional< Rune >	next ()
	Gets the next Rune, if present.

Public Attributes
Slice< const T >	data
size_t	strIndex = 0

Detailed Description

template<typename T>
struct mtcore::RuneIterator< T >

Iterates over runes of utf8 sequences (char, char_t)

Template Parameters

T	Character type to iterate over

Definition at line 872 of file byte_endian.hpp.

Member Typedef Documentation

IterElem

template<typename T>

using mtcore::RuneIterator< T >::IterElem = Rune

Definition at line 873 of file byte_endian.hpp.

Member Function Documentation

next()

template<typename T>

Optional< Rune > mtcore::RuneIterator< T >::next ( )

inline

Gets the next Rune, if present.

Definition at line 878 of file byte_endian.hpp.

                          {
      if (strIndex >= data.size()) {
        return nullopt;
      }
      auto curIndex        = strIndex;
      char32_t currentRune = 0;
      auto numBytes        = impl::unicode::num_bytes(data[curIndex]);
 
      if (numBytes < 0) {
        ++strIndex;
      }
      else if (curIndex + numBytes - 1 >= data.size()) {
        strIndex = data.size();
      }
      else {
        strIndex = curIndex + numBytes;
        for (size_t index = curIndex; index < strIndex; ++index) {
          auto flag = impl::unicode::get_flag(data[index]);
          if (index > curIndex && flag != impl::unicode::continueFlag) {
            strIndex    = curIndex + index - 1;
            currentRune = 0;
            break;
          }
          auto noFlag = impl::unicode::without_flag(data[index]);
          currentRune <<= 6;
          currentRune |= noFlag;
        }
      }
      return currentRune;
    }

Member Data Documentation

data

template<typename T>

Slice<const T> mtcore::RuneIterator< T >::data

Definition at line 874 of file byte_endian.hpp.

strIndex

template<typename T>

size_t mtcore::RuneIterator< T >::strIndex = 0

Definition at line 875 of file byte_endian.hpp.

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

• byte_endian.hpp