Iterates over runes of utf32 sequences Also handles flipping endianness to native endian. More...

#include <byte_endian.hpp>

Inheritance diagram for mtcore::RuneIterator< char32_t >:

Collaboration diagram for mtcore::RuneIterator< char32_t >:

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Public Types
using	IterElem = char32_t

using	IterElem

Public Member Functions
Optional< char32_t >	next ()

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

Public Attributes
Slice< const char32_t >	data

size_t	strIndex = 0

bool	reverseBom = false

Slice< const char32_t >	data

size_t	strIndex

Detailed Description

Iterates over runes of utf32 sequences Also handles flipping endianness to native endian.

Definition at line 915 of file byte_endian.hpp.

Member Typedef Documentation

◆ IterElem [1/2]

using mtcore::RuneIterator< char32_t >::IterElem

Definition at line 873 of file byte_endian.hpp.

◆ IterElem [2/2]

using mtcore::RuneIterator< char32_t >::IterElem = char32_t

Definition at line 916 of file byte_endian.hpp.

Member Function Documentation

◆ next() [1/2]

Optional< Rune > mtcore::RuneIterator< char32_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;
    }

◆ next() [2/2]

Optional< char32_t > mtcore::RuneIterator< char32_t >::next ( )

inline

Definition at line 921 of file byte_endian.hpp.

                              {
      if (strIndex >= data.len) {
        return nullopt;
      }
      const auto res = data[strIndex++];
      if (reverseBom) {
        return flip_endian_ch32(res);
      }
      return res;
    }

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Member Data Documentation

◆ data [1/2]

Slice<const char32_t> mtcore::RuneIterator< char32_t >::data

Definition at line 874 of file byte_endian.hpp.

◆ data [2/2]

Slice<const char32_t> mtcore::RuneIterator< char32_t >::data

Definition at line 917 of file byte_endian.hpp.

◆ reverseBom

bool mtcore::RuneIterator< char32_t >::reverseBom = false

Definition at line 919 of file byte_endian.hpp.

◆ strIndex [1/2]

size_t mtcore::RuneIterator< char32_t >::strIndex

Definition at line 875 of file byte_endian.hpp.

◆ strIndex [2/2]

size_t mtcore::RuneIterator< char32_t >::strIndex = 0

Definition at line 918 of file byte_endian.hpp.

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

byte_endian.hpp

Public Types

Public Member Functions

Public Attributes