IcuStringIterator Class Reference

String iterator using ICU as a backend. More...

Inheritance diagram for IcuStringIterator:

Public Member Functions
void	SetString (const char *s) override
	Set a new iteration string.
size_t	SetCurPosition (size_t pos) override
	Change the current string cursor.
size_t	Next (IterType what) override
	Advance the cursor by one iteration unit.
size_t	Prev (IterType what) override
	Move the cursor back by one iteration unit.

Private Attributes
icu::BreakIterator *	char_itr
	ICU iterator for characters.
icu::BreakIterator *	word_itr
	ICU iterator for words.
std::vector< UChar >	utf16_str
	UTF-16 copy of the string.
std::vector< size_t >	utf16_to_utf8
	Mapping from UTF-16 code point position to index in the UTF-8 source string.

Additional Inherited Members
Public Types inherited from StringIterator
enum	IterType { ITER_CHARACTER , ITER_WORD }
	Type of the iterator. More...
Static Public Member Functions inherited from StringIterator
static std::unique_ptr< StringIterator >	Create ()
	Create a new iterator instance.
Static Public Attributes inherited from StringIterator
static const size_t	END = SIZE_MAX
	Sentinel to indicate end-of-iteration.

Detailed Description

String iterator using ICU as a backend.

Definition at line 772 of file string.cpp.

Constructor & Destructor Documentation

IcuStringIterator()

IcuStringIterator::IcuStringIterator ( )

inline

Definition at line 781 of file string.cpp.

~IcuStringIterator()

IcuStringIterator::~IcuStringIterator ( )

inlineoverride

Definition at line 791 of file string.cpp.

Member Function Documentation

Next()

size_t IcuStringIterator::Next ( IterType  what )

inlineoverridevirtual

Advance the cursor by one iteration unit.

Returns

New cursor position (in bytes) or END if the cursor is already at the end of the string.

Implements StringIterator.

Definition at line 852 of file string.cpp.

References StringIterator::END, IsWhitespace(), StringIterator::ITER_CHARACTER, StringIterator::ITER_WORD, and Utf16DecodeChar().

Prev()

size_t IcuStringIterator::Prev ( IterType  what )

inlineoverridevirtual

Move the cursor back by one iteration unit.

Returns

New cursor position (in bytes) or END if the cursor is already at the start of the string.

Implements StringIterator.

Definition at line 884 of file string.cpp.

References StringIterator::END, IsWhitespace(), StringIterator::ITER_CHARACTER, StringIterator::ITER_WORD, and Utf16DecodeChar().

SetCurPosition()

size_t IcuStringIterator::SetCurPosition ( size_t  pos )

inlineoverridevirtual

Change the current string cursor.

Parameters

pos	New cursor position.

Returns

Actual new cursor position at the next valid character boundary.

Precondition

pos has to be inside the current string.

Implements StringIterator.

Definition at line 834 of file string.cpp.

SetString()

void IcuStringIterator::SetString ( const char *  s )

inlineoverridevirtual

Set a new iteration string.

Must also be called if the string contents changed. The cursor is reset to the start of the string.

Parameters

s	New string.

Implements StringIterator.

Definition at line 797 of file string.cpp.

Field Documentation

char_itr

icu::BreakIterator* IcuStringIterator::char_itr

private

ICU iterator for characters.

Definition at line 774 of file string.cpp.

utf16_str

std::vector<UChar> IcuStringIterator::utf16_str

private

UTF-16 copy of the string.

Definition at line 777 of file string.cpp.

utf16_to_utf8

std::vector<size_t> IcuStringIterator::utf16_to_utf8

private

Mapping from UTF-16 code point position to index in the UTF-8 source string.

Definition at line 778 of file string.cpp.

word_itr

icu::BreakIterator* IcuStringIterator::word_itr

private

ICU iterator for words.

Definition at line 775 of file string.cpp.

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

• src/string.cpp