llvm::line_iterator Class Reference

A forward iterator which reads text lines from a buffer. More...

#include "llvm/Support/LineIterator.h"

Public Types
using	iterator_category = std::forward_iterator_tag
using	value_type = StringRef
using	difference_type = std::ptrdiff_t
using	pointer = value_type *
using	reference = value_type &

Public Member Functions
	line_iterator ()=default
	Default construct an "end" iterator. More...
	line_iterator (const MemoryBufferRef &Buffer, bool SkipBlanks=true, char CommentMarker='\0')
	Construct a new iterator around an unowned memory buffer. More...
	line_iterator (const MemoryBuffer &Buffer, bool SkipBlanks=true, char CommentMarker='\0')
	Construct a new iterator around some memory buffer. More...
bool	is_at_eof () const
	Return true if we've reached EOF or are an "end" iterator. More...
bool	is_at_end () const
	Return true if we're an "end" iterator or have reached EOF. More...
int64_t	line_number () const
	Return the current line number. May return any number at EOF. More...
line_iterator &	operator++ ()
	Advance to the next (non-empty, non-comment) line. More...
line_iterator	operator++ (int)
StringRef	operator* () const
	Get the current line as a StringRef. More...
const StringRef *	operator-> () const

Friends
bool	operator== (const line_iterator &LHS, const line_iterator &RHS)
bool	operator!= (const line_iterator &LHS, const line_iterator &RHS)

Detailed Description

A forward iterator which reads text lines from a buffer.

This class provides a forward iterator interface for reading one line at a time from a buffer. When default constructed the iterator will be the "end" iterator.

The iterator is aware of what line number it is currently processing. It strips blank lines by default, and comment lines given a comment-starting character.

Note that this iterator requires the buffer to be nul terminated.

Definition at line 33 of file LineIterator.h.

Member Typedef Documentation

difference_type

using llvm::line_iterator::difference_type = std::ptrdiff_t

Definition at line 44 of file LineIterator.h.

iterator_category

using llvm::line_iterator::iterator_category = std::forward_iterator_tag

Definition at line 42 of file LineIterator.h.

pointer

using llvm::line_iterator::pointer = value_type *

Definition at line 45 of file LineIterator.h.

reference

using llvm::line_iterator::reference = value_type &

Definition at line 46 of file LineIterator.h.

value_type

using llvm::line_iterator::value_type = StringRef

Definition at line 43 of file LineIterator.h.

Constructor & Destructor Documentation

line_iterator() [1/3]

llvm::line_iterator::line_iterator ( )

default

Default construct an "end" iterator.

line_iterator() [2/3]

line_iterator::line_iterator ( const MemoryBufferRef &  Buffer, bool  SkipBlanks = true, char  CommentMarker = '\0'  )

explicit

Construct a new iterator around an unowned memory buffer.

Definition at line 38 of file LineIterator.cpp.

References assert(), llvm::MemoryBufferRef::getBufferEnd(), llvm::MemoryBufferRef::getBufferSize(), llvm::MemoryBufferRef::getBufferStart(), and isAtLineEnd().

line_iterator() [3/3]

line_iterator::line_iterator ( const MemoryBuffer &  Buffer, bool  SkipBlanks = true, char  CommentMarker = '\0'  )

explicit

Construct a new iterator around some memory buffer.

Definition at line 34 of file LineIterator.cpp.

Member Function Documentation

is_at_end()

bool llvm::line_iterator::is_at_end ( ) const

inline

Return true if we're an "end" iterator or have reached EOF.

Definition at line 63 of file LineIterator.h.

References is_at_eof().

Referenced by llvm::TextInstrProfReader::readNextRecord().

is_at_eof()

bool llvm::line_iterator::is_at_eof ( ) const

inline

Return true if we've reached EOF or are an "end" iterator.

Definition at line 60 of file LineIterator.h.

Referenced by getBBClusterInfo(), llvm::sampleprof::SampleProfileReaderText::hasFormat(), is_at_end(), llvm::SymbolRemappingReader::read(), llvm::sampleprof::SampleProfileReaderText::readImpl(), and llvm::ReplayInlineAdvisor::ReplayInlineAdvisor().

line_number()

int64_t llvm::line_iterator::line_number ( ) const

inline

Return the current line number. May return any number at EOF.

Definition at line 66 of file LineIterator.h.

Referenced by getBBClusterInfo(), llvm::SymbolRemappingReader::read(), and llvm::sampleprof::SampleProfileReaderText::readImpl().

operator*()

StringRef llvm::line_iterator::operator* ( ) const

inline

Get the current line as a StringRef.

Definition at line 80 of file LineIterator.h.

operator++() [1/2]

line_iterator& llvm::line_iterator::operator++ ( )

inline

Advance to the next (non-empty, non-comment) line.

Definition at line 69 of file LineIterator.h.

operator++() [2/2]

line_iterator llvm::line_iterator::operator++ ( int  )

inline

Definition at line 73 of file LineIterator.h.

operator->()

const StringRef* llvm::line_iterator::operator-> ( ) const

inline

Definition at line 81 of file LineIterator.h.

Friends And Related Function Documentation

operator!=

bool operator!= ( const line_iterator &  LHS, const line_iterator &  RHS  )

friend

Definition at line 88 of file LineIterator.h.

operator==

bool operator== ( const line_iterator &  LHS, const line_iterator &  RHS  )

friend

Definition at line 83 of file LineIterator.h.

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

• include/llvm/Support/LineIterator.h
• lib/Support/LineIterator.cpp