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lib: add static_asserts to vec<> accessors

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Forbid invoking accessors that would cause an out-of-bounds access
and make it a compile-time error:

```c++
	vec<scalar, 2>{}.z();
	vec<scalar, 3>{}.w();
```
This commit is contained in:
Jan Engelhardt
2025-05-21 16:59:29 +02:00
parent 72cca13616
commit ecd2d161ba
1 changed files with 24 additions and 24 deletions
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48
lib/vecmat_external.h
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@@ -94,44 +94,44 @@ template<size_t N_DST = N, enum align A_DST = align::adaptive>
operator vec<T,N_DST,A_DST>() { return *reinterpret_cast<vec<T,N_DST,A_DST>*>(this); }
constexpr inline T& x() { return (*this)[0]; }
constexpr inline T& y() { return (*this)[1]; }
constexpr inline T& z() { return (*this)[2]; }
constexpr inline T& w() { return (*this)[3]; }
constexpr inline T& y() { static_assert(N >= 2); return (*this)[1]; }
constexpr inline T& z() { static_assert(N >= 3); return (*this)[2]; }
constexpr inline T& w() { static_assert(N >= 4); return (*this)[3]; }
constexpr inline const T& x() const { return (*this)[0]; }
constexpr inline const T& y() const { return (*this)[1]; }
constexpr inline const T& z() const { return (*this)[2]; }
constexpr inline const T& w() const { return (*this)[3]; }
constexpr inline const T& y() const { static_assert(N >= 2); return (*this)[1]; }
constexpr inline const T& z() const { static_assert(N >= 3); return (*this)[2]; }
constexpr inline const T& w() const { static_assert(N >= 4); return (*this)[3]; }
constexpr inline T& p() { return (*this)[0]; }
constexpr inline T& h() { return (*this)[1]; }
constexpr inline T& b() { return (*this)[2]; }
constexpr inline T& h() { static_assert(N >= 2); return (*this)[1]; }
constexpr inline T& b() { static_assert(N >= 3); return (*this)[2]; }
constexpr inline const T& p() const { return (*this)[0]; }
constexpr inline const T& h() const { return (*this)[1]; }
constexpr inline const T& b() const { return (*this)[2]; }
constexpr inline const T& h() const { static_assert(N >= 2); return (*this)[1]; }
constexpr inline const T& b() const { static_assert(N >= 3); return (*this)[2]; }
constexpr inline T& u() { return (*this)[0]; }
constexpr inline T& v() { return (*this)[1]; }
constexpr inline T& u2() { return (*this)[2]; }
constexpr inline T& v2() { return (*this)[3]; }
constexpr inline T& s() { return (*this)[2]; }
constexpr inline T& t() { return (*this)[3]; }
constexpr inline T& v() { static_assert(N >= 2); return (*this)[1]; }
constexpr inline T& u2() { static_assert(N >= 3); return (*this)[2]; }
constexpr inline T& v2() { static_assert(N >= 4); return (*this)[3]; }
constexpr inline T& s() { static_assert(N >= 3); return (*this)[2]; }
constexpr inline T& t() { static_assert(N >= 4); return (*this)[3]; }
constexpr inline const T& u() const { return (*this)[0]; }
constexpr inline const T& v() const { return (*this)[1]; }
constexpr inline const T& u2() const { return (*this)[2]; }
constexpr inline const T& v2() const { return (*this)[3]; }
constexpr inline const T& s() const { return (*this)[2]; }
constexpr inline const T& t() const { return (*this)[3]; }
constexpr inline const T& v() const { static_assert(N >= 2); return (*this)[1]; }
constexpr inline const T& u2() const { static_assert(N >= 3); return (*this)[2]; }
constexpr inline const T& v2() const { static_assert(N >= 4); return (*this)[3]; }
constexpr inline const T& s() const { static_assert(N >= 3); return (*this)[2]; }
constexpr inline const T& t() const { static_assert(N >= 4); return (*this)[3]; }
constexpr inline T& l() { return (*this)[0]; }
constexpr inline T& r() { return (*this)[0]; }
constexpr inline T& g() { return (*this)[1]; }
constexpr inline T& a() { return (*this)[3]; }
constexpr inline T& g() { static_assert(N >= 2); return (*this)[1]; }
constexpr inline T& a() { static_assert(N >= 4); return (*this)[3]; }
constexpr inline const T& l() const { return (*this)[0]; }
constexpr inline const T& r() const { return (*this)[0]; }
constexpr inline const T& g() const { return (*this)[1]; }
constexpr inline const T& a() const { return (*this)[3]; }
constexpr inline const T& g() const { static_assert(N >= 2); return (*this)[1]; }
constexpr inline const T& a() const { static_assert(N >= 4); return (*this)[3]; }
constexpr static inline const vec<T,N,A> id(ssize_t i = -1) { vec<T,N> dst = {}; if(i == -1) dst.fill(1); else dst[i % N] = (T)1; return dst; }
constexpr static inline const vec<T,N,A> ne() { vec<T,N,A> dst = {}; return dst; }