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Remove comparator.hh and switch to <=> in a bunch of places

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Known behavior changes:

- `MemorySourceAccessor`'s comparison operators no longer forget to
  compare the `SourceAccessor` base class.

Progress on #10832

What remains for that issue is hopefully much easier!
This commit is contained in:
John Ericson 2024-05-16 18:46:38 -04:00
parent 2a95a2d780
commit bc83b9dc1f
49 changed files with 300 additions and 271 deletions
Download patch file Download diff file Expand all files Collapse all files

39
src/libcmd/built-path.cc
View file

@ -1,6 +1,7 @@
#include "built-path.hh"
#include "derivations.hh"
#include "store-api.hh"
#include "comparator.hh"
#include <nlohmann/json.hpp>
@ -8,30 +9,24 @@
namespace nix {
#define CMP_ONE(CHILD_TYPE, MY_TYPE, FIELD, COMPARATOR) \
bool MY_TYPE ::operator COMPARATOR (const MY_TYPE & other) const \
{ \
const MY_TYPE* me = this; \
auto fields1 = std::tie(*me->drvPath, me->FIELD); \
me = &other; \
auto fields2 = std::tie(*me->drvPath, me->FIELD); \
return fields1 COMPARATOR fields2; \
}
#define CMP(CHILD_TYPE, MY_TYPE, FIELD) \
CMP_ONE(CHILD_TYPE, MY_TYPE, FIELD, ==) \
CMP_ONE(CHILD_TYPE, MY_TYPE, FIELD, !=) \
CMP_ONE(CHILD_TYPE, MY_TYPE, FIELD, <)
// Custom implementation to avoid `ref` ptr equality
GENERATE_CMP_EXT(
,
std::strong_ordering,
SingleBuiltPathBuilt,
*me->drvPath,
me->output);
#define FIELD_TYPE std::pair<std::string, StorePath>
CMP(SingleBuiltPath, SingleBuiltPathBuilt, output)
#undef FIELD_TYPE
// Custom implementation to avoid `ref` ptr equality
#define FIELD_TYPE std::map<std::string, StorePath>
CMP(SingleBuiltPath, BuiltPathBuilt, outputs)
#undef FIELD_TYPE
#undef CMP
#undef CMP_ONE
// TODO no `GENERATE_CMP_EXT` because no `std::set::operator<=>` on
// Darwin, per header.
GENERATE_EQUAL(
,
BuiltPathBuilt ::,
BuiltPathBuilt,
*me->drvPath,
me->outputs);
StorePath SingleBuiltPath::outPath() const
{

16
src/libcmd/built-path.hh
View file

@ -18,7 +18,8 @@ struct SingleBuiltPathBuilt {
static SingleBuiltPathBuilt parse(const StoreDirConfig & store, std::string_view, std::string_view);
nlohmann::json toJSON(const StoreDirConfig & store) const;
DECLARE_CMP(SingleBuiltPathBuilt);
bool operator ==(const SingleBuiltPathBuilt &) const noexcept;
std::strong_ordering operator <=>(const SingleBuiltPathBuilt &) const noexcept;
};
using _SingleBuiltPathRaw = std::variant<
@ -33,6 +34,9 @@ struct SingleBuiltPath : _SingleBuiltPathRaw {
using Opaque = DerivedPathOpaque;
using Built = SingleBuiltPathBuilt;
bool operator == (const SingleBuiltPath &) const = default;
auto operator <=> (const SingleBuiltPath &) const = default;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
@ -59,11 +63,13 @@ struct BuiltPathBuilt {
ref<SingleBuiltPath> drvPath;
std::map<std::string, StorePath> outputs;
bool operator == (const BuiltPathBuilt &) const noexcept;
// TODO libc++ 16 (used by darwin) missing `std::map::operator <=>`, can't do yet.
//std::strong_ordering operator <=> (const BuiltPathBuilt &) const noexcept;
std::string to_string(const StoreDirConfig & store) const;
static BuiltPathBuilt parse(const StoreDirConfig & store, std::string_view, std::string_view);
nlohmann::json toJSON(const StoreDirConfig & store) const;
DECLARE_CMP(BuiltPathBuilt);
};
using _BuiltPathRaw = std::variant<
@ -82,6 +88,10 @@ struct BuiltPath : _BuiltPathRaw {
using Opaque = DerivedPathOpaque;
using Built = BuiltPathBuilt;
bool operator == (const BuiltPath &) const = default;
// TODO libc++ 16 (used by darwin) missing `std::map::operator <=>`, can't do yet.
//auto operator <=> (const BuiltPath &) const = default;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}