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