254 struct SourceColumnMap {  struct
255   SourceColumnMap(StringRef SourceLine, unsigned TabStop)  in SourceColumnMap()  function
268   int columns() const { return m_byteToColumn.back(); }  in columns()
269   int bytes() const { return m_columnToByte.back(); }  in bytes()
273   int byteToColumn(int n) const {  in byteToColumn()
279   int byteToContainingColumn(int N) const {  in byteToContainingColumn()
289   int columnToByte(int n) const {  in columnToByte()
295   int startOfNextColumn(int N) const {  in startOfNextColumn()
302   int startOfPreviousColumn(int N) const {  in startOfPreviousColumn()
308   StringRef getSourceLine() const {  in getSourceLine()
313   const std::string m_SourceLine;
314   SmallVector<int,200> m_byteToColumn;
315   SmallVector<int,200> m_columnToByte;