hphp/parser/location.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #ifndef incl_HPHP_PARSER_LOCATION_H_
  18 #define incl_HPHP_PARSER_LOCATION_H_
  19
  20 #include "hphp/util/base.h"
  21
  22 namespace HPHP {
  23 ///////////////////////////////////////////////////////////////////////////////
  24
  25 DECLARE_BOOST_TYPES(Location);
  26 class Location {
  27 public:
  28   Location() : file(""), line0(1), char0(1), line1(1), char1(1), cursor(0) {}
  29
  30   const char *file;
  31   int line0;
  32   int char0;
  33   int line1;
  34   int char1;
  35   int cursor;
  36
  37   void first(int line, char pos) {
  38     line0 = line; char0 = pos;
  39   }
  40   void first(Location &loc) {
  41     line0 = loc.line0; char0 = loc.char0;
  42   }
  43   void last(int line, char pos) {
  44     line1 = line; char1 = pos;
  45   }
  46   void last(Location &loc) {
  47     line1 = loc.line1; char1 = loc.char1;
  48   }
  49
  50   /**
  51    * This only guarantees consistent result between two locations, whether or
  52    * not it makes sense, because we're comparing those integers first for
  53    * quicker sorting.
  54    */
  55   int compare(Location *loc) {
  56     if (line0 < loc->line0) return -1; if (line0 > loc->line0) return 1;
  57     if (char0 < loc->char0) return -1; if (char0 > loc->char0) return 1;
  58     if (line1 < loc->line1) return -1; if (line1 > loc->line1) return 1;
  59     if (char1 < loc->char1) return -1; if (char1 > loc->char1) return 1;
  60     return strcmp(file, loc->file);
  61   }
  62 };
  63
  64 ///////////////////////////////////////////////////////////////////////////////
  65 }
  66
  67 #endif // incl_HPHP_PARSER_LOCATION_H_