AuroraMiddleware/qt5base-lts
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QString::replace(): Commentary clarifications.

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Also skip doing a += 0 when we had to test whether the relevant rhs
was zero anyway (because we want to ++ there instead of +=ing).

Change-Id: Ibd5f21eb9aaf410b09c9db8450b2d61618e628fc
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>
This commit is contained in:
Edward Welbourne 2016-03-30 19:26:29 +02:00 committed by Edward Welbourne
parent 7a2f53647b
commit 9a3bcd1c3d
1 changed files with 9 additions and 9 deletions
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16
src/corelib/tools/qstring.cpp
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@ -2488,19 +2488,19 @@ QString &QString::replace(const QChar *before, int blen,
if (index == -1)
break;
indices[pos++] = index;
if (blen) // Step over before:
index += blen;
// avoid infinite loop
if (!blen)
else // Only count one instance of empty between any two characters:
index++;
}
if (!pos)
if (!pos) // Nothing to replace
break;
replace_helper(indices, pos, blen, after, alen);
if (index == -1)
if (index == -1) // Nothing left to replace
break;
// index has to be adjusted in case we get back into the loop above.
// The call to replace_helper just moved what index points at:
index += pos*(alen-blen);
}
@ -2545,14 +2545,14 @@ QString& QString::replace(QChar ch, const QString &after, Qt::CaseSensitivity cs
index++;
}
}
if (!pos)
if (!pos) // Nothing to replace
break;
replace_helper(indices, pos, 1, after.constData(), after.d->size);
if (index == -1)
if (index == -1) // Nothing left to replace
break;
// index has to be adjusted in case we get back into the loop above.
// The call to replace_helper just moved what index points at:
index += pos*(after.d->size - 1);
}
return *this;