parse.h

   1 // -*- C++ -*-
   2 // Copyright (C) 2005-2010 Red Hat Inc.
   3 // Copyright (C) 2007 Bull S.A.S
   4 //
   5 // This file is part of systemtap, and is free software.  You can
   6 // redistribute it and/or modify it under the terms of the GNU General
   7 // Public License (GPL); either version 2, or (at your option) any
   8 // later version.
   9
  10
  11 #ifndef PARSE_H
  12 #define PARSE_H
  13
  14 #include <string>
  15 #include <iostream>
  16 #include <stdexcept>
  17
  18 struct stapfile;
  19
  20 struct source_loc
  21 {
  22   stapfile* file;
  23   unsigned line;
  24   unsigned column;
  25 };
  26
  27 std::ostream& operator << (std::ostream& o, const source_loc& loc);
  28
  29 enum parse_context
  30   {
  31     con_unknown, con_probe, con_global, con_function, con_embedded
  32   };
  33
  34
  35 enum token_type
  36   {
  37     tok_junk, tok_identifier, tok_operator, tok_string, tok_number,
  38     tok_embedded, tok_keyword
  39   };
  40
  41
  42 struct token
  43 {
  44   source_loc location;
  45   token_type type;
  46   std::string content;
  47 };
  48
  49
  50 std::ostream& operator << (std::ostream& o, const token& t);
  51
  52
  53 struct parse_error: public std::runtime_error
  54 {
  55   const token* tok;
  56   bool skip_some;
  57   parse_error (const std::string& msg):
  58     runtime_error (msg), tok (0), skip_some (true) {}
  59   parse_error (const std::string& msg, const token* t):
  60     runtime_error (msg), tok (t), skip_some (true) {}
  61   parse_error (const std::string& msg, bool skip):
  62     runtime_error (msg), tok (0), skip_some (skip) {}
  63 };
  64
  65
  66 struct systemtap_session;
  67
  68 stapfile* parse (systemtap_session& s, std::istream& i, bool privileged);
  69 stapfile* parse (systemtap_session& s, const std::string& n, bool privileged);
  70
  71
  72 #endif // PARSE_H
  73
  74 /* vim: set sw=2 ts=8 cino=>4,n-2,{2,^-2,t0,(0,u0,w1,M1 : */