diff options
Diffstat (limited to 'src/corelib/tools/qarraydata.cpp')
-rw-r--r-- | src/corelib/tools/qarraydata.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/corelib/tools/qarraydata.cpp b/src/corelib/tools/qarraydata.cpp index 2d744f97c0..4047bf611f 100644 --- a/src/corelib/tools/qarraydata.cpp +++ b/src/corelib/tools/qarraydata.cpp @@ -130,4 +130,33 @@ void QArrayData::deallocate(QArrayData *data, size_t objectSize, ::free(data); } +namespace QtPrivate { +/*! + \internal +*/ +QContainerImplHelper::CutResult QContainerImplHelper::mid(int originalLength, int *_position, int *_length) +{ + int &position = *_position; + int &length = *_length; + if (position > originalLength) + return Null; + + if (position < 0) { + if (length < 0 || length + position >= originalLength) + return Full; + if (length + position <= 0) + return Null; + length += position; + position = 0; + } else if (uint(length) > uint(originalLength - position)) { + length = originalLength - position; + } + + if (position == 0 && length == originalLength) + return Full; + + return length > 0 ? Subset : Empty; +} +} + QT_END_NAMESPACE |