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std.container.Array: Simplify implementation of length (by calling reserve).

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DoctorNoobingstoneIPresume 2021-06-14 04:12:52 +03:00 • committed by The Dlang Bot
parent 815a718c81
commit 0b7bf8dc1f
1 changed files with 2 additions and 40 deletions
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42
std/container/array.d
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@ -322,47 +322,9 @@ if (!is(immutable T == immutable bool))
return; return;
} }
immutable startEmplace = length; immutable startEmplace = length;
if (_capacity < newLength) reserve(newLength);
{
// enlarge
static if (T.sizeof == 1)
{
const nbytes = newLength;
}
else
{
import core.checkedint : mulu;
bool overflow;
const nbytes = mulu(newLength, T.sizeof, overflow);
if (overflow)
assert(false, "Overflow");
}
static if (hasIndirections!T)
{
auto newPayloadPtr = cast(T*) enforceMalloc(nbytes);
auto newPayload = newPayloadPtr[0 .. newLength];
memcpy(newPayload.ptr, _payload.ptr, startEmplace * T.sizeof);
memset(newPayload.ptr + startEmplace, 0,
(newLength - startEmplace) * T.sizeof);
GC.addRange(newPayload.ptr, nbytes);
GC.removeRange(_payload.ptr);
free(_payload.ptr);
_payload = newPayload;
}
else
{
_payload = (cast(T*) enforceRealloc(_payload.ptr,
nbytes))[0 .. newLength];
}
_capacity = newLength;
}
else
{
_payload = _payload.ptr[0 .. newLength];
}
initializeAll(_payload.ptr[startEmplace .. newLength]); initializeAll(_payload.ptr[startEmplace .. newLength]);
_payload = _payload.ptr[0 .. newLength];
} }
@property size_t capacity() const @property size_t capacity() const