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Compile-time variant of std::strlen #13

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Merged
d-level merged 2 commits into from
Nov 22, 2025
Merged

Compile-time variant of std::strlen #13

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dbf7c5f
feat: Compile-time variant of std::strlen
d-level Nov 22, 2025
4607e3b
feat: Allow view<char8> to be constructed from constexpr char8*
d-level Nov 22, 2025
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5 changes: 2 additions & 3 deletions Base/Types/view.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -17,9 +17,8 @@ namespace atl {
public:
using base_view<char8>::base_view;

// TODO: Add support for versions below C++17.
ATL_CONSTEXPR_CPP17 view<char8>(const char8* data) :
view<char8>(data, std::char_traits<char8>::length(data))
constexpr view<char8>(const char8* data) :
view<char8>(data, countCharacters(data))
{}

uint64 find(char8 character, uint64 characterOffset) const {
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20 changes: 9 additions & 11 deletions Base/Utilities.hpp
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright 2025 Atalante.
// Copyright 2025 Atalante.
// Licensed under MIT.

#pragma once
Expand All @@ -9,17 +9,15 @@ namespace atl {
std::copy(sourceBegin, sourceEnd, destination);
}

inline uint64 countCharacters(const char8* string) {
uint64 count = 0;

while (true) {
if (string[count] == '\0') {
break;
inline constexpr uint64 countCharacters(const char8* characters) {
#if ATL_STANDARD >= ATL_STANDARD_CPP17
return std::char_traits<char8>::length(characters);
#else
if (*characters == '\0') {
return 0;
}

count += 1;
}

return count;
return 1 + countCharacters(characters + 1);
#endif
}
}
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