From 03e794b7a6ce730c8768b91e00fefc6db32463be Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Thu, 14 Aug 2014 10:06:14 +0200
Subject: Add benchmark for QString::section()

Change-Id: I7ca4ceb8cfa7a3df384400a1b3ebc9be2502e396
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
---
 tests/benchmarks/corelib/tools/qstring/main.cpp | 58 +++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

(limited to 'tests/benchmarks/corelib/tools/qstring/main.cpp')

diff --git a/tests/benchmarks/corelib/tools/qstring/main.cpp b/tests/benchmarks/corelib/tools/qstring/main.cpp
index 64dfad82c9..2cd41280f1 100644
--- a/tests/benchmarks/corelib/tools/qstring/main.cpp
+++ b/tests/benchmarks/corelib/tools/qstring/main.cpp
@@ -40,18 +40,76 @@ class tst_QString: public QObject
 public:
     tst_QString();
 private slots:
+    void section_regexp_data() { section_data_impl(); }
+    void section_regexp() { section_impl<QRegExp>(); }
+    void section_regularexpression_data() { section_data_impl(); }
+    void section_regularexpression() { section_impl<QRegularExpression>(); }
+    void section_string_data() { section_data_impl(false); }
+    void section_string() { section_impl<QString>(); }
+
     void toUpper_data();
     void toUpper();
     void toLower_data();
     void toLower();
     void toCaseFolded_data();
     void toCaseFolded();
+
+private:
+    void section_data_impl(bool includeRegExOnly = true);
+    template <typename RX> void section_impl();
 };
 
 tst_QString::tst_QString()
 {
 }
 
+void tst_QString::section_data_impl(bool includeRegExOnly)
+{
+    QTest::addColumn<QString>("s");
+    QTest::addColumn<QString>("sep");
+    QTest::addColumn<bool>("isRegExp");
+
+    QTest::newRow("IPv4") << QStringLiteral("192.168.0.1") << QStringLiteral(".") << false;
+    QTest::newRow("IPv6") << QStringLiteral("2001:0db8:85a3:0000:0000:8a2e:0370:7334") << QStringLiteral(":") << false;
+    if (includeRegExOnly) {
+        QTest::newRow("IPv6-reversed-roles") << QStringLiteral("2001:0db8:85a3:0000:0000:8a2e:0370:7334") << QStringLiteral("\\d+") << true;
+        QTest::newRow("IPv6-complex") << QStringLiteral("2001:0db8:85a3:0000:0000:8a2e:0370:7334") << QStringLiteral("(\\d+):\\1") << true;
+    }
+}
+
+template <typename RX>
+inline QString escape(const QString &s)
+{ return RX::escape(s); }
+
+template <>
+inline QString escape<QString>(const QString &s)
+{ return s; }
+
+template <typename RX>
+inline void optimize(RX &) {}
+
+template <>
+inline void optimize(QRegularExpression &rx)
+{ rx.optimize(); }
+
+template <typename RX>
+void tst_QString::section_impl()
+{
+    QFETCH(QString, s);
+    QFETCH(QString, sep);
+    QFETCH(bool, isRegExp);
+
+    RX rx(isRegExp ? sep : escape<RX>(sep));
+    optimize(rx);
+    for (int i = 0; i < 20; ++i)
+        (void) s.count(rx); // make (s, rx) hot
+
+    QBENCHMARK {
+        const QString result = s.section(rx, 0, 16);
+        Q_UNUSED(result);
+    }
+}
+
 void tst_QString::toUpper_data()
 {
     QTest::addColumn<QString>("s");
-- 
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