#define SASS_BACKTRACE
#include <sstream>
namespace Sass {
using namespace std;
struct Backtrace {
Backtrace* parent;
string path;
size_t line;
string caller;
Backtrace(Backtrace* prn, string pth, size_t ln, string c)
: parent(prn),
path(pth),
line(ln),
caller(c)
{ }
string to_string(bool warning = false)
{
stringstream ss;
Backtrace* this_point = this;
if (!warning) ss << endl << "Backtrace:";
// the first tracepoint (which is parent-less) is an empty placeholder
while (this_point->parent) {
ss << endl
<< "\t"
<< (warning ? " " : "")
<< this_point->path
<< ":"
<< this_point->line
<< this_point->parent->caller;
this_point = this_point->parent;
}
return ss.str();
}
size_t depth()
{
size_t d = 0;
Backtrace* p = parent;
while (p) {
++d;
p = p->parent;
}
return d-1;
}
};
}