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vector: do not free buffer in copy assignment unless necessary

master
Daniel Kolesa 2015-05-17 17:28:11 +01:00
parent ed24618061
commit 7e61799f8b
1 changed files with 3 additions and 16 deletions
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19
octa/vector.h
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@ -102,21 +102,9 @@ namespace octa {
&& IsNothrowCopyConstructible<T>::value
) {
if (this == &v) return *this;
if (p_cap >= v.p_cap) {
if (!octa::IsPod<T>()) {
T *cur = p_buf, *last = p_buf + p_len;
while (cur != last) (*cur++).~T();
}
p_len = v.p_len;
} else {
clear();
delete[] (uchar *)p_buf;
p_len = v.p_len;
p_cap = v.p_cap;
p_buf = (T *)new uchar[p_cap * sizeof(T)];
}
clear();
reserve(v.p_cap);
p_len = v.p_len;
if (octa::IsPod<T>()) {
memcpy(p_buf, v.p_buf, p_len * sizeof(T));
} else {
@ -126,7 +114,6 @@ namespace octa {
new (cur++) T(*vbuf++);
}
}
return *this;
}