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#pragma once
///@file
#include "util.hh"
#include "comparator.hh"
#include "derived-path.hh"
#include "variant-wrapper.hh"
#include <nlohmann/json_fwd.hpp>
namespace nix {
class BadNixStringContextElem : public Error
{
public:
std::string_view raw;
template<typename... Args>
BadNixStringContextElem(std::string_view raw_, const Args & ... args)
: Error("")
{
raw = raw_;
auto hf = HintFmt(args...);
err.msg = HintFmt("Bad String Context element: %1%: %2%", Uncolored(hf.str()), raw);
}
};
struct NixStringContextElem {
/**
* Plain opaque path to some store object.
*
* Encoded as just the path: ‘<path>’.
*/
using Opaque = SingleDerivedPath::Opaque;
/**
* Path to a derivation and its entire build closure.
*
* The path doesn't just refer to derivation itself and its closure, but
* also all outputs of all derivations in that closure (including the
* root derivation).
*
* Encoded in the form ‘=<drvPath>’.
*/
struct DrvDeep {
StorePath drvPath;
GENERATE_CMP(DrvDeep, me->drvPath);
};
/**
* Derivation output.
*
* Encoded in the form ‘!<output>!<drvPath>’.
*/
using Built = SingleDerivedPath::Built;
using Raw = std::variant<
Opaque,
DrvDeep,
Built
>;
Raw raw;
GENERATE_CMP(NixStringContextElem, me->raw);
MAKE_WRAPPER_CONSTRUCTOR(NixStringContextElem);
/**
* Decode a context string, one of:
* - ‘<path>’
* - ‘=<path>’
* - ‘!<name>!<path>’
*
* @param xpSettings Stop-gap to avoid globals during unit tests.
*/
static NixStringContextElem parse(
std::string_view s,
const ExperimentalFeatureSettings & xpSettings = experimentalFeatureSettings);
std::string to_string() const;
};
typedef std::set<NixStringContextElem> NixStringContext;
}
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