54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
// throw macros for OS X and other POSIX systems
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// adapted for Windows as well, november 2014
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// copyright © 2002-2014 Bob Polis
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#include <string>
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#include <sstream>
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#include <iostream>
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#include <stdexcept>
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#include <system_error>
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#include "throw.hpp"
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using namespace std;
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static string combine_message_elements(const char* file, unsigned int line, const char* user_message, const char* sys_message)
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{
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ostringstream msg;
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string f {file};
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msg << sys_message << " (" << f.substr(f.rfind('/') + 1) << ":" << line << ")";
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if (user_message) {
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msg << ", " << user_message;
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}
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return msg.str();
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}
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void __throw_if_min1(int x, const char* file, unsigned int line, const char* message)
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{
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if (x == -1) {
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error_code ec {errno, system_category()};
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ostringstream ec_str;
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ec_str << "system error " << ec.value() << ": " << ec.message();
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string msg {combine_message_elements(file, line, message, ec_str.str().c_str())};
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throw system_error {ec, msg};
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}
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}
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void __throw_if_null(const void* p, const char* file, unsigned int line, const char* message)
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{
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if (p == nullptr) {
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string msg {combine_message_elements(file, line, message, "null pointer exception")};
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throw runtime_error {msg};
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}
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}
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void __throw_if_err(int err, const char* file, unsigned int line, const char* message)
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{
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if (err != 0) {
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error_code ec {err, system_category()};
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ostringstream ec_str;
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ec_str << "error " << err;
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string msg {combine_message_elements(file, line, message, ec_str.str().c_str())};
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throw system_error {ec, msg};
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}
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}
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