`sig type token = STRING of string | IDENT of string | BOOL of bool | EOF | LBRACKET | RBRACKET | LPAR | RPAR | LBRACE | RBRACE | COLON | INT of int | RELOP of OpamTypes.relop | LOGOP of OpamTypes.logop | PFXOP of OpamTypes.pfxop | ENVOP of string val main : (Lexing.lexbuf -> OpamParser.token) -> Lexing.lexbuf -> string -> OpamTypes.file val value : (Lexing.lexbuf -> OpamParser.token) -> Lexing.lexbuf -> OpamTypes.value end`