//
// libsemigroups - C++ library for semigroups and monoids
// Copyright (C) 2023 James D. Mitchell
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// This file contains the implementation of LibsemigroupsException
#include "libsemigroups/exception.hpp"
#include <cstddef>
// for size_t
#include <stdexcept>
// for std::runtime_error
#include <string>
// for char_traits, allocator, operator+
#include "libsemigroups/config.hpp" // for LIBSEMIGROUPS_BACKWARD_ENABLED
//
#ifdef LIBSEMIGROUPS_BACKWARD_ENABLED
#if defined(__CYGWIN__) ||
defined(__CYGWIN32__)
#undef LIBSEMIGROUPS_BACKWARD_ENABLED
#else
#include "backward-cpp/backward.hpp" // for StackTrace, TraceResolver, Reso...
#endif
#endif
namespace libsemigroups {
LibsemigroupsException::LibsemigroupsException(std::string
const& fname,
int linenum,
std::string
const& funcname,
std::string
const& msg)
// Initialise runtime_error message in case something goes wrong below
: std::runtime_error(fname +
":" + std::to_string(linenum) +
":"
+ funcname +
": " + msg) {
#ifdef LIBSEMIGROUPS_BACKWARD_ENABLED
std::string full_msg;
backward::StackTrace st;
st.load_here();
backward::TraceResolver tr;
tr.load_stacktrace(st);
for (size_t i = st.size() - 1; i-- > 0;) {
backward::ResolvedTrace trace = tr.resolve(st[i]);
size_t pos = trace.object_function.find(
"(");
if (pos == std::string::npos) {
continue;
}
std::string func(trace.object_function.begin(),
trace.object_function.begin() + pos);
if (func.find(
"Catch") != std::string::npos
|| func.find(
"C_A_T_C_H") != std::string::npos
|| func.find(
"LibsemigroupsException") != std::string::npos
|| func.find(
"pybind11") != std::string::npos
|| func.find(
"libsemigroups") == std::string::npos) {
continue;
}
full_msg +=
"#" + std::to_string(i - 1) +
" " + func +
"\n";
}
full_msg =
"Simplified stack trace (most recent call last):\n" + full_msg;
full_msg
+= fname +
":" + std::to_string(linenum) +
":" + funcname +
": " + msg;
static_cast<std::runtime_error&>(*
this) = std::runtime_error(full_msg);
#endif
}
}
// namespace libsemigroups
#ifdef LIBSEMIGROUPS_BACKWARD_ENABLED
namespace backward {
backward::SignalHandling sh;
}
// namespace backward
#endif
