197   StringRef::iterator Position= Range.begin();  in decodeUTF8()  local
201   if (Position < End && (*Position & 0x80) == 0) {  in decodeUTF8()
202     return std::make_pair(*Position, 1);  in decodeUTF8()
206   if (Position + 1 < End && ((*Position & 0xE0) == 0xC0) &&  in decodeUTF8()
207       ((*(Position + 1) & 0xC0) == 0x80)) {  in decodeUTF8()
208     uint32_t codepoint = ((*Position & 0x1F) << 6) |  in decodeUTF8()
209                           (*(Position + 1) & 0x3F);  in decodeUTF8()
215   if (Position + 2 < End && ((*Position & 0xF0) == 0xE0) &&  in decodeUTF8()
216       ((*(Position + 1) & 0xC0) == 0x80) &&  in decodeUTF8()
217       ((*(Position + 2) & 0xC0) == 0x80)) {  in decodeUTF8()
218     uint32_t codepoint = ((*Position & 0x0F) << 12) |  in decodeUTF8()
219                          ((*(Position + 1) & 0x3F) << 6) |  in decodeUTF8()
220                           (*(Position + 2) & 0x3F);  in decodeUTF8()
229   if (Position + 3 < End && ((*Position & 0xF8) == 0xF0) &&  in decodeUTF8()
230       ((*(Position + 1) & 0xC0) == 0x80) &&  in decodeUTF8()
231       ((*(Position + 2) & 0xC0) == 0x80) &&  in decodeUTF8()
232       ((*(Position + 3) & 0xC0) == 0x80)) {  in decodeUTF8()
233     uint32_t codepoint = ((*Position & 0x07) << 18) |  in decodeUTF8()
234                          ((*(Position + 1) & 0x3F) << 12) |  in decodeUTF8()
235                          ((*(Position + 2) & 0x3F) << 6) |  in decodeUTF8()
236                           (*(Position + 3) & 0x3F);  in decodeUTF8()
266   void setError(const Twine &Message, StringRef::iterator Position) {  in setError()  argument
267     if (Position >= End)  in setError()
268       Position = End - 1;  in setError()
277       printError(SMLoc::getFromPointer(Position), SourceMgr::DK_Error, Message);  in setError()
294   ///        at \a Position.
296   /// If the UTF-8 code units starting at Position do not form a well-formed
299   UTF8Decoded decodeUTF8(StringRef::iterator Position) {  in decodeUTF8()  argument
300     return ::decodeUTF8(StringRef(Position, End - Position));  in decodeUTF8()
323   /// Skip a single nb-char[27] starting at Position.
328   /// @returns The code unit after the nb-char, or Position if it's not an
330   StringRef::iterator skip_nb_char(StringRef::iterator Position);
332   /// Skip a single b-break[28] starting at Position.
336   /// @returns The code unit after the b-break, or Position if it's not a
338   StringRef::iterator skip_b_break(StringRef::iterator Position);
340   /// Skip a single s-space[31] starting at Position.
344   /// @returns The code unit after the s-space, or Position if it's not a
346   StringRef::iterator skip_s_space(StringRef::iterator Position);
348   /// Skip a single s-white[33] starting at Position.
352   /// @returns The code unit after the s-white, or Position if it's not a
354   StringRef::iterator skip_s_white(StringRef::iterator Position);
356   /// Skip a single ns-char[34] starting at Position.
360   /// @returns The code unit after the ns-char, or Position if it's not a
362   StringRef::iterator skip_ns_char(StringRef::iterator Position);
372                                 , StringRef::iterator Position);
393   bool isBlankOrBreak(StringRef::iterator Position);
397   bool isPlainSafeNonBlank(StringRef::iterator Position);
402   /// Consume a single b-break[28] if it's present at the current position.
404   /// Return false if the code unit at the current position isn't a line break.
432   /// position of the scanner.
528   /// The current position of the scanner.
927 StringRef::iterator Scanner::skip_nb_char(StringRef::iterator Position) {  in skip_nb_char()  argument
928   if (Position == End)  in skip_nb_char()
929     return Position;  in skip_nb_char()
931   if (   *Position == 0x09  in skip_nb_char()
932       || (*Position >= 0x20 && *Position <= 0x7E))  in skip_nb_char()
933     return Position + 1;  in skip_nb_char()
936   if (uint8_t(*Position) & 0x80) {  in skip_nb_char()
937     UTF8Decoded u8d = decodeUTF8(Position);  in skip_nb_char()
947       return Position + u8d.second;  in skip_nb_char()
949   return Position;  in skip_nb_char()
952 StringRef::iterator Scanner::skip_b_break(StringRef::iterator Position) {  in skip_b_break()  argument
953   if (Position == End)  in skip_b_break()
954     return Position;  in skip_b_break()
955   if (*Position == 0x0D) {  in skip_b_break()
956     if (Position + 1 != End && *(Position + 1) == 0x0A)  in skip_b_break()
957       return Position + 2;  in skip_b_break()
958     return Position + 1;  in skip_b_break()
961   if (*Position == 0x0A)  in skip_b_break()
962     return Position + 1;  in skip_b_break()
963   return Position;  in skip_b_break()
966 StringRef::iterator Scanner::skip_s_space(StringRef::iterator Position) {  in skip_s_space()  argument
967   if (Position == End)  in skip_s_space()
968     return Position;  in skip_s_space()
969   if (*Position == ' ')  in skip_s_space()
970     return Position + 1;  in skip_s_space()
971   return Position;  in skip_s_space()
974 StringRef::iterator Scanner::skip_s_white(StringRef::iterator Position) {  in skip_s_white()  argument
975   if (Position == End)  in skip_s_white()
976     return Position;  in skip_s_white()
977   if (*Position == ' ' || *Position == '\t')  in skip_s_white()
978     return Position + 1;  in skip_s_white()
979   return Position;  in skip_s_white()
982 StringRef::iterator Scanner::skip_ns_char(StringRef::iterator Position) {  in skip_ns_char()  argument
983   if (Position == End)  in skip_ns_char()
984     return Position;  in skip_ns_char()
985   if (*Position == ' ' || *Position == '\t')  in skip_ns_char()
986     return Position;  in skip_ns_char()
987   return skip_nb_char(Position);  in skip_ns_char()
991                                        , StringRef::iterator Position) {  in skip_while()  argument
993     StringRef::iterator i = (this->*Func)(Position);  in skip_while()
994     if (i == Position)  in skip_while()
996     Position = i;  in skip_while()
998   return Position;  in skip_while()
1054 bool Scanner::isBlankOrBreak(StringRef::iterator Position) {  in isBlankOrBreak()  argument
1055   if (Position == End)  in isBlankOrBreak()
1057   return *Position == ' ' || *Position == '\t' || *Position == '\r' ||  in isBlankOrBreak()
1058          *Position == '\n';  in isBlankOrBreak()
1061 bool Scanner::isPlainSafeNonBlank(StringRef::iterator Position) {  in isPlainSafeNonBlank()  argument
1062   if (Position == End || isBlankOrBreak(Position))  in isPlainSafeNonBlank()
1065       StringRef(Position, 1).find_first_of(",[]{}") != StringRef::npos)  in isPlainSafeNonBlank()
1071   for (const auto *Position = Line.begin(); Position != Line.end(); ++Position)  in isLineEmpty()  local
1072     if (!isBlankOrBreak(Position))  in isLineEmpty()
1382 wasEscaped(StringRef::iterator First, StringRef::iterator Position);
1384 // Returns whether a character at 'Position' was escaped with a leading '\'.
1385 // 'First' specifies the position of the first character in the string.
1387                        StringRef::iterator Position) {  in wasEscaped()  argument
1388   assert(Position - 1 >= First);  in wasEscaped()
1389   StringRef::iterator I = Position - 1;  in wasEscaped()
1390   // We calculate the number of consecutive '\'s before the current position  in wasEscaped()
1393   // (Position - 1 - I) now contains the number of '\'s before the current  in wasEscaped()
1394   // position. If it is odd, the character at 'Position' was escaped.  in wasEscaped()
1395   return (Position - 1 - I) % 2 == 1;  in wasEscaped()