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#pragma once
///@file
#include <cassert>
#include <optional>
#include <set>
#include <variant>
#include "json-impls.hh"
namespace nix {
/**
* A non-empty set of outputs, specified by name
*/
struct OutputNames : std::set<std::string> {
using std::set<std::string>::set;
/* These need to be "inherited manually" */
OutputNames(const std::set<std::string> & s)
: std::set<std::string>(s)
{ assert(!empty()); }
/**
* Needs to be "inherited manually"
*/
OutputNames(std::set<std::string> && s)
: std::set<std::string>(s)
{ assert(!empty()); }
/* This set should always be non-empty, so we delete this
constructor in order make creating empty ones by mistake harder.
*/
OutputNames() = delete;
};
/**
* The set of all outputs, without needing to name them explicitly
*/
struct AllOutputs : std::monostate { };
typedef std::variant<AllOutputs, OutputNames> _OutputsSpecRaw;
struct OutputsSpec : _OutputsSpecRaw {
using Raw = _OutputsSpecRaw;
using Raw::Raw;
/**
* Force choosing a variant
*/
OutputsSpec() = delete;
using Names = OutputNames;
using All = AllOutputs;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
inline Raw & raw() {
return static_cast<Raw &>(*this);
}
bool contains(const std::string & output) const;
/**
* Create a new OutputsSpec which is the union of this and that.
*/
OutputsSpec union_(const OutputsSpec & that) const;
/**
* Whether this OutputsSpec is a subset of that.
*/
bool isSubsetOf(const OutputsSpec & outputs) const;
/**
* Parse a string of the form 'output1,...outputN' or '*', returning
* the outputs spec.
*/
static OutputsSpec parse(std::string_view s);
static std::optional<OutputsSpec> parseOpt(std::string_view s);
std::string to_string() const;
};
struct DefaultOutputs : std::monostate { };
typedef std::variant<DefaultOutputs, OutputsSpec> _ExtendedOutputsSpecRaw;
struct ExtendedOutputsSpec : _ExtendedOutputsSpecRaw {
using Raw = _ExtendedOutputsSpecRaw;
using Raw::Raw;
using Default = DefaultOutputs;
using Explicit = OutputsSpec;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
/**
* Parse a string of the form 'prefix^output1,...outputN' or
* 'prefix^*', returning the prefix and the extended outputs spec.
*/
static std::pair<std::string_view, ExtendedOutputsSpec> parse(std::string_view s);
static std::optional<std::pair<std::string_view, ExtendedOutputsSpec>> parseOpt(std::string_view s);
std::string to_string() const;
};
}
JSON_IMPL(OutputsSpec)
JSON_IMPL(ExtendedOutputsSpec)
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