eldritch horrors
8a539424c8
string context doesn't need any tests because it's never persisted or shown to the user. getting rid of recursive string context means that the context string parsers can be a lot simpler from here on forward. Change-Id: I58443679ad76c0f28ea5f4eb8bfb3874f270e764
80 lines
1.7 KiB
C++
80 lines
1.7 KiB
C++
#pragma once
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///@file
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#include "lix/libutil/comparator.hh"
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#include "lix/libstore/derived-path.hh"
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#include "lix/libutil/variant-wrapper.hh"
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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%", Uncolored(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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static NixStringContextElem parse(std::string_view s);
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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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