www.aleph1.co.uk Git - yaffs-website/blob - node_modules/node-sass/src/libsass/src/backtrace.hpp

   1 #ifndef SASS_BACKTRACE_H
   2 #define SASS_BACKTRACE_H
   3
   4 #include <sstream>
   5
   6 #include "file.hpp"
   7 #include "position.hpp"
   8
   9 namespace Sass {
  10
  11
  12   struct Backtrace {
  13
  14     Backtrace*  parent;
  15     ParserState pstate;
  16     std::string      caller;
  17
  18     Backtrace(Backtrace* prn, ParserState pstate, std::string c)
  19     : parent(prn),
  20       pstate(pstate),
  21       caller(c)
  22     { }
  23
  24     const std::string to_string(bool warning = false)
  25     {
  26       size_t i = -1;
  27       std::stringstream ss;
  28       std::string cwd(Sass::File::get_cwd());
  29       Backtrace* this_point = this;
  30
  31       if (!warning) ss << std::endl << "Backtrace:";
  32       // the first tracepoint (which is parent-less) is an empty placeholder
  33       while (this_point->parent) {
  34
  35         // make path relative to the current directory
  36         std::string rel_path(Sass::File::abs2rel(this_point->pstate.path, cwd, cwd));
  37
  38         if (warning) {
  39           ss << std::endl
  40              << "\t"
  41              << (++i == 0 ? "on" : "from")
  42              << " line "
  43              << this_point->pstate.line + 1
  44              << " of "
  45              << rel_path;
  46         } else {
  47           ss << std::endl
  48              << "\t"
  49              << rel_path
  50              << ":"
  51              << this_point->pstate.line + 1
  52              << this_point->parent->caller;
  53         }
  54
  55         this_point = this_point->parent;
  56       }
  57
  58       return ss.str();
  59     }
  60
  61     size_t depth()
  62     {
  63       size_t d = 0;
  64       Backtrace* p = parent;
  65       while (p) {
  66         ++d;
  67         p = p->parent;
  68       }
  69       return d-1;
  70     }
  71
  72   };
  73
  74 }
  75
  76 #endif