Location.hpp

   1 /* Cycript - The Truly Universal Scripting Language
   2  * Copyright (C) 2009-2016  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #ifndef CYCRIPT_LOCATION_HPP
  23 #define CYCRIPT_LOCATION_HPP
  24
  25 #include <iostream>
  26
  27 class CYPosition {
  28   public:
  29     std::string *filename;
  30     unsigned int line;
  31     unsigned int column;
  32
  33     CYPosition() :
  34         filename(NULL),
  35         line(1),
  36         column(0)
  37     {
  38     }
  39
  40     void Lines(unsigned count = 1) {
  41         column = 0;
  42         line += count;
  43     }
  44
  45     void Columns(unsigned count = 1) {
  46         column += count;
  47     }
  48 };
  49
  50 inline std::ostream &operator <<(std::ostream &out, const CYPosition &position) {
  51     if (position.filename != NULL)
  52         out << *position.filename << ":";
  53     out << position.line << "." << position.column;
  54     return out;
  55 }
  56
  57 class CYLocation {
  58   public:
  59     CYPosition begin;
  60     CYPosition end;
  61
  62     void step() {
  63         begin = end;
  64     }
  65 };
  66
  67 inline std::ostream &operator <<(std::ostream &out, const CYLocation &location) {
  68     const CYPosition &begin(location.begin);
  69     const CYPosition &end(location.end);
  70
  71     out << begin;
  72     if (end.filename != NULL && (begin.filename == NULL || *begin.filename != *end.filename))
  73         out << '-' << *end.filename << ':' << end.line << '.' << end.column;
  74     else if (begin.line != end.line)
  75         out << '-' << end.line << '.' << end.column;
  76     else if (begin.column != end.column)
  77         out << '-' << end.column;
  78     return out;
  79 }
  80
  81 #endif/*CYCRIPT_LOCATION_HPP*/