54 struct Token {  struct
55   explicit Token(Kind T = Unknown, StringRef S = "") : K(T), Value(S) {}  in Token()  argument
93   Token lex() {  in lex()
96       return Token(Eof);  in lex()
100       return Token(Eof);  in lex()
110         return Token(EqualEqual, "==");  in lex()
112       return Token(Equal, "=");  in lex()
115       return Token(Comma, ",");  in lex()
119       return Token(Identifier, S);  in lex()
138       return Token(K, Word);  in lex()
355   Token Tok;
356   std::vector<Token> Stack;