39 static bool parseInt(StringRef &input, unsigned &value) {  in parseInt()  argument
41   if (input.empty())  in parseInt()
44   char next = input[0];  in parseInt()
45   input = input.substr(1);  in parseInt()
50   while (!input.empty()) {  in parseInt()
51     next = input[0];  in parseInt()
54     input = input.substr(1);  in parseInt()
61 bool VersionTuple::tryParse(StringRef input) {  in tryParse()  argument
65   if (parseInt(input, major))  in tryParse()
68   if (input.empty()) {  in tryParse()
74   if (input[0] != '.')  in tryParse()
76   input = input.substr(1);  in tryParse()
77   if (parseInt(input, minor))  in tryParse()
80   if (input.empty()) {  in tryParse()
86   if (input[0] != '.')  in tryParse()
88   input = input.substr(1);  in tryParse()
89   if (parseInt(input, micro))  in tryParse()
92   if (input.empty()) {  in tryParse()
98   if (input[0] != '.')  in tryParse()
100   input = input.substr(1);  in tryParse()
101   if (parseInt(input, build))  in tryParse()
105   if (!input.empty())  in tryParse()