diff options
author | Anton Kudryavtsev <antkudr@mail.ru> | 2016-11-13 16:19:55 +0300 |
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committer | Anton Kudryavtsev <antkudr@mail.ru> | 2016-11-28 13:18:45 +0000 |
commit | 7eb4be9db89d40ea2cc090e7a562bdd588708607 (patch) | |
tree | 63bf6d7c18ab0d1685f985aa129af4722716abac | |
parent | 49cdf51ac97d12749e770d792124b7f06d5fd9ca (diff) |
QStringRef: de-duplicate lastIndexOf code
Change-Id: Id6d804b2ab4c9c763d7ec9cb66c255ed0b4f785d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
-rw-r--r-- | src/corelib/tools/qstring.cpp | 77 |
1 files changed, 40 insertions, 37 deletions
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp index 4262899e02..eef375fe72 100644 --- a/src/corelib/tools/qstring.cpp +++ b/src/corelib/tools/qstring.cpp @@ -3260,6 +3260,23 @@ static int lastIndexOfHelper(const ushort *haystack, int from, const ushort *nee return -1; } +static inline int lastIndexOfHelper( + const QStringRef &haystack, int from, const QStringRef &needle, Qt::CaseSensitivity cs) +{ + return lastIndexOfHelper(reinterpret_cast<const ushort*>(haystack.unicode()), from, + reinterpret_cast<const ushort*>(needle.unicode()), needle.size(), cs); +} + +static inline int lastIndexOfHelper( + const QStringRef &haystack, int from, QLatin1String needle, Qt::CaseSensitivity cs) +{ + const int size = needle.size(); + QVarLengthArray<ushort> s(size); + qt_from_latin1(s.data(), needle.latin1(), size); + return lastIndexOfHelper(reinterpret_cast<const ushort*>(haystack.unicode()), from, + s.data(), size, cs); +} + /*! Returns the index position of the last occurrence of the string \a str in this string, searching backward from index position \a @@ -9816,6 +9833,27 @@ int QStringRef::lastIndexOf(QChar ch, int from, Qt::CaseSensitivity cs) const return qt_last_index_of(unicode(), size(), ch, from, cs); } +template<typename T> +static int last_index_of_impl(const QStringRef &haystack, int from, const T &needle, Qt::CaseSensitivity cs) +{ + const int sl = needle.size(); + if (sl == 1) + return haystack.lastIndexOf(needle.at(0), from, cs); + + const int l = haystack.size(); + if (from < 0) + from += l; + int delta = l - sl; + if (from == l && sl == 0) + return from; + if (uint(from) >= uint(l) || delta < 0) + return -1; + if (from > delta) + from = delta; + + return lastIndexOfHelper(haystack, from, needle, cs); +} + /*! \since 4.8 \overload lastIndexOf() @@ -9833,25 +9871,7 @@ int QStringRef::lastIndexOf(QChar ch, int from, Qt::CaseSensitivity cs) const */ int QStringRef::lastIndexOf(QLatin1String str, int from, Qt::CaseSensitivity cs) const { - const int sl = str.size(); - if (sl == 1) - return lastIndexOf(str.at(0), from, cs); - - const int l = size(); - if (from < 0) - from += l; - int delta = l - sl; - if (from == l && sl == 0) - return from; - if (uint(from) >= uint(l) || delta < 0) - return -1; - if (from > delta) - from = delta; - - QVarLengthArray<ushort> s(sl); - qt_from_latin1(s.data(), str.latin1(), sl); - - return lastIndexOfHelper(reinterpret_cast<const ushort*>(unicode()), from, s.data(), sl, cs); + return last_index_of_impl(*this, from, str, cs); } /*! @@ -9871,24 +9891,7 @@ int QStringRef::lastIndexOf(QLatin1String str, int from, Qt::CaseSensitivity cs) */ int QStringRef::lastIndexOf(const QStringRef &str, int from, Qt::CaseSensitivity cs) const { - const int sl = str.size(); - if (sl == 1) - return lastIndexOf(str.at(0), from, cs); - - const int l = size(); - if (from < 0) - from += l; - int delta = l - sl; - if (from == l && sl == 0) - return from; - if (uint(from) >= uint(l) || delta < 0) - return -1; - if (from > delta) - from = delta; - - return lastIndexOfHelper(reinterpret_cast<const ushort*>(unicode()), from, - reinterpret_cast<const ushort*>(str.unicode()), - str.size(), cs); + return last_index_of_impl(*this, from, str, cs); } /*! |