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Clang C++20 compatibility: made operator== and operator!= friend functions #31

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Clang C++20 compatibility: made operator== and operator!= friend functions #31

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b7bacb0
Turned operator== and operator!= members into friend functions for Cl…
JPenuchot Jan 20, 2022
66857ea
Added default constructor for non_copyable_thing that Clang doesn't g…
JPenuchot Jan 20, 2022
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4 changes: 2 additions & 2 deletions include/ctpg/ctpg.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -124,8 +124,8 @@ namespace stdex
constexpr it_type* cast() { return static_cast<it_type*>(this); }
constexpr const it_type* cast() const { return static_cast<const it_type*>(this); }

constexpr bool operator == (const it_type& other) const { return cast()->ptr == other.ptr; }
constexpr bool operator != (const it_type& other) const { return cast()->ptr != other.ptr; }
constexpr friend bool operator == (it_type const& a, it_type const& b) { return a.cast()->ptr == b.cast()->ptr; }
constexpr friend bool operator != (it_type const& a, it_type const& b) { return a.cast()->ptr != b.cast()->ptr; }
constexpr it_type operator - (size_type amount) const { return it_type{ cast()->ptr - amount }; }
constexpr size_type operator - (const it_type& other) const { return size_type(cast()->ptr - other.ptr); }
constexpr it_type operator + (size_type amount) const { return it_type{ cast()->ptr + amount }; }
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3 changes: 2 additions & 1 deletion tests/list_helpers.cpp
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Expand Up @@ -38,6 +38,7 @@ namespace test
{
struct non_copyable_thing
{
non_copyable_thing() = default;
non_copyable_thing(const non_copyable_thing&) = delete;
non_copyable_thing& operator = (const non_copyable_thing&) = delete;

Expand Down Expand Up @@ -87,4 +88,4 @@ TEST_CASE("construct", "[list helpers]")

REQUIRE(result.has_value());
REQUIRE(result.value().size() == 4);
}
}