80 lines
2 KiB
C++
80 lines
2 KiB
C++
/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#include <sstream>
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#include <string>
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#include <cstdlib>
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#include "util/debug.h"
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#include "bindings/lua/lua_exception.h"
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namespace lean {
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lua_exception::lua_exception(char const * lua_error):exception("") {
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lean_assert(lua_error);
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std::string fname;
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std::string line;
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std::string msg;
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int state = 0;
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char const * it = lua_error;
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while (*it) {
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if (state == 0) {
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if (*it == ':') {
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state = 1;
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} else {
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fname += *it;
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}
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} else if (state == 1) {
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if (*it == ':') {
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state = 2;
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} else {
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line += *it;
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}
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} else {
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msg += *it;
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}
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it++;
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}
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if (state != 2) {
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// failed to decode Lua error message
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m_source = source::Unknown;
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m_msg = lua_error;
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} else {
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if (fname == "[string \"...\"]") {
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m_source = source::String;
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} else {
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m_source = source::File;
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m_file = fname;
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}
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m_line = atoi(line.c_str());
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m_msg = msg;
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}
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}
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char const * lua_exception::get_filename() const {
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lean_assert(get_source() == source::File);
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return m_file.c_str();
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}
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unsigned lua_exception::get_line() const {
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lean_assert(get_source() != source::Unknown);
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return m_line;
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}
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char const * lua_exception::msg() const noexcept {
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return exception::what();
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}
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char const * lua_exception::what() const noexcept {
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static thread_local std::string buffer;
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std::ostringstream strm;
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switch (m_source) {
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case source::String: strm << "[string]:" << m_line << ":" << msg() << "\n"; break;
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case source::File: strm << m_file << ":" << m_line << ":" << msg() << "\n"; break;
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case source::Unknown: return msg();
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}
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buffer = strm.str();
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return buffer.c_str();
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}
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}
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