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Small improvements for StringRef

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* `operator[]` is constexpr
* `operator<<` and `operator+=` are hidden friends
This commit is contained in:
Martin Hořeňovský
2020-05-10 07:22:11 +02:00
parent 094d840efe
commit 895d0a0696
8 changed files with 20 additions and 12 deletions
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8
src/catch2/catch_stringref.hpp
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@@ -53,7 +53,7 @@ namespace Catch {
return !(*this == other);
}
auto operator[] ( size_type index ) const noexcept -> char {
constexpr auto operator[] ( size_type index ) const noexcept -> char {
assert(index < m_size);
return m_start[index];
}
@@ -97,10 +97,12 @@ namespace Catch {
public: // iterators
constexpr const_iterator begin() const { return m_start; }
constexpr const_iterator end() const { return m_start + m_size; }
friend std::string& operator += (std::string& lhs, StringRef const& sr);
friend std::ostream& operator << (std::ostream& os, StringRef const& sr);
};
auto operator += ( std::string& lhs, StringRef const& sr ) -> std::string&;
auto operator << ( std::ostream& os, StringRef const& sr ) -> std::ostream&;
constexpr auto operator "" _sr( char const* rawChars, std::size_t size ) noexcept -> StringRef {
return StringRef( rawChars, size );