mirror of
https://github.com/matrix-construct/construct
synced 2024-11-28 09:42:37 +01:00
106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2022 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_VERSIONS_H
|
|
|
|
namespace ircd
|
|
{
|
|
struct versions;
|
|
}
|
|
|
|
/// Instances of `versions` create a dynamic version registry identifying
|
|
/// third-party dependencies throughout the project and its loaded modules.
|
|
///
|
|
/// Create a static instance of this class in a definition file or module
|
|
/// which has access to the version information of the dependency. Often there
|
|
/// can be two version identifiers for a dependency, one for headers and the
|
|
/// other for dynamically loaded shared object. In that case, create two
|
|
/// instances of this class with the same name.
|
|
///
|
|
struct ircd::versions
|
|
:instance_list<versions>
|
|
{
|
|
/// Our own name for the dependency.
|
|
string_view name;
|
|
|
|
/// Set the type to either API or ABI to indicate where this version
|
|
/// information has been sourced. Defaults to API.
|
|
enum type {API, ABI} type {API};
|
|
|
|
/// If the version number is a single (likely monotonic) integer.
|
|
long monotonic {0};
|
|
|
|
/// Alternative semantic version number.
|
|
std::array<long, 3> semantic {0};
|
|
|
|
/// Version string buffer. Copy any provided version string here.
|
|
char string[128] {0};
|
|
|
|
/// Convenience access to read the semantic version numbers.
|
|
auto &operator[](const int &idx) const;
|
|
|
|
/// Convenience access to read the monotonic integer; note that if zero
|
|
/// the semantic major number is read instead.
|
|
explicit operator const long &() const;
|
|
|
|
/// Convenience access to read the string
|
|
explicit operator string_view() const;
|
|
|
|
versions(const string_view &name,
|
|
const enum type &type = type::API,
|
|
const long &monotonic = 0,
|
|
const std::array<long, 3> &semantic = {0L},
|
|
const string_view &string = {}) noexcept;
|
|
|
|
versions(const string_view &name,
|
|
const enum type &type,
|
|
const long &monotonic,
|
|
const std::array<long, 3> &semantic,
|
|
const std::function<void (versions &, const mutable_buffer &)> &generator) noexcept;
|
|
|
|
versions() = default;
|
|
versions(versions &&) = delete;
|
|
versions(const versions &) = delete;
|
|
~versions() noexcept;
|
|
};
|
|
|
|
namespace ircd
|
|
{
|
|
template<>
|
|
decltype(versions::allocator)
|
|
instance_list<versions>::allocator;
|
|
|
|
template<>
|
|
decltype(versions::list)
|
|
instance_list<versions>::list;
|
|
}
|
|
|
|
inline ircd::versions::operator
|
|
const long &()
|
|
const
|
|
{
|
|
return monotonic?: semantic[0];
|
|
}
|
|
|
|
inline ircd::versions::operator
|
|
ircd::string_view()
|
|
const
|
|
{
|
|
return string;
|
|
}
|
|
|
|
inline auto &
|
|
ircd::versions::operator[](const int &idx)
|
|
const
|
|
{
|
|
return semantic.at(idx);
|
|
}
|