mirror of https://github.com/djcb/mu.git
145 lines
3.1 KiB
C++
145 lines
3.1 KiB
C++
/*
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** Copyright (C) 2019-2020 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#ifndef MU_ERROR_HH__
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#define MU_ERROR_HH__
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#include <stdexcept>
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#include "mu-utils.hh"
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#include "mu-util.h"
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#include <glib.h>
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namespace Mu {
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struct Error final : public std::exception {
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enum struct Code {
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AccessDenied = 100, // don't overlap with MuError
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Command,
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Crypto,
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File,
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Index,
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Internal,
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InvalidArgument,
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Message,
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NotFound,
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Parsing,
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Query,
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SchemaMismatch,
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Store,
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User,
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Play,
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AssertionFailure
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};
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/**
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* Construct an error
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*
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* @param codearg error-code
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* #param msgarg the error diecription
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*/
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Error(Code codearg, const std::string& msgarg) : code_{codearg}, what_{msgarg} {}
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Error(Code codearg, std::string&& msgarg) : code_{codearg}, what_{std::move(msgarg)} {}
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/**
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* Build an error from an error-code and a format string
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*
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* @param code error-code
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* @param frm format string
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* @param ... format parameters
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*
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* @return an Error object
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*/
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__attribute__((format(printf, 3, 0))) Error(Code codearg, const char* frm, ...)
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: code_{codearg}
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{
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va_list args;
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va_start(args, frm);
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what_ = vformat(frm, args);
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va_end(args);
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}
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Error(Error&& rhs) = default;
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Error(const Error& rhs) = default;
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/**
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* Build an error from a GError an error-code and a format string
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*
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* @param code error-code
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* @param gerr a GError or {}, which is consumed
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* @param frm format string
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* @param ... format parameters
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*
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* @return an Error object
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*/
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__attribute__((format(printf, 4, 0)))
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Error(Code codearg, GError** err, const char* frm, ...)
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: code_{codearg}
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{
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va_list args;
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va_start(args, frm);
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what_ = vformat(frm, args);
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va_end(args);
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if (err && *err)
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what_ += format(": %s", (*err)->message);
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else
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what_ += ": something went wrong";
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g_clear_error(err);
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}
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/**
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* DTOR
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*
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*/
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virtual ~Error() override = default;
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/**
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* Get the descriptive message.
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*
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* @return
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*/
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virtual const char* what() const noexcept override { return what_.c_str(); }
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/**
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* Get the error-code for this error
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*
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* @return the error-code
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*/
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Code code() const noexcept { return code_; }
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/**
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* Fill a GError with the error information
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*
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* @param err GError** (or NULL)
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*/
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void fill_g_error(GError **err) const noexcept{
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g_set_error(err, MU_ERROR_DOMAIN, static_cast<int>(code_),
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"%s", what_.c_str());
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}
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private:
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const Code code_;
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std::string what_;
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};
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} // namespace Mu
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#endif /* MU_ERROR_HH__ */
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