From f276dd5b7f8b45201949906c3167ff43ecb2caf4 Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Fri, 27 Mar 2015 20:56:44 +0100
Subject: QVarLengthArray: add relational operators <,<=,>,>=

std::vector has them, too.

[ChangeLog][QtCore][QVarLengthArray] Added relational operators <, <=, >, >= if the element
type supports operator<.

Change-Id: I69e16d361fd4738a56b292ebfa78316d28871eda
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/tools/qvarlengtharray.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'src/corelib/tools/qvarlengtharray.h')

diff --git a/src/corelib/tools/qvarlengtharray.h b/src/corelib/tools/qvarlengtharray.h
index 95cd0447d8..2d8f922cb8 100644
--- a/src/corelib/tools/qvarlengtharray.h
+++ b/src/corelib/tools/qvarlengtharray.h
@@ -480,6 +480,36 @@ bool operator!=(const QVarLengthArray<T, Prealloc1> &l, const QVarLengthArray<T,
     return !(l == r);
 }
 
+template <typename T, int Prealloc1, int Prealloc2>
+bool operator<(const QVarLengthArray<T, Prealloc1> &lhs, const QVarLengthArray<T, Prealloc2> &rhs)
+    Q_DECL_NOEXCEPT_EXPR(noexcept(std::lexicographical_compare(lhs.begin(), lhs.end(),
+                                                               rhs.begin(), rhs.end())))
+{
+    return std::lexicographical_compare(lhs.begin(), lhs.end(),
+                                        rhs.begin(), rhs.end());
+}
+
+template <typename T, int Prealloc1, int Prealloc2>
+inline bool operator>(const QVarLengthArray<T, Prealloc1> &lhs, const QVarLengthArray<T, Prealloc2> &rhs)
+    Q_DECL_NOEXCEPT_EXPR(noexcept(lhs < rhs))
+{
+    return rhs < lhs;
+}
+
+template <typename T, int Prealloc1, int Prealloc2>
+inline bool operator<=(const QVarLengthArray<T, Prealloc1> &lhs, const QVarLengthArray<T, Prealloc2> &rhs)
+    Q_DECL_NOEXCEPT_EXPR(noexcept(lhs < rhs))
+{
+    return !(lhs > rhs);
+}
+
+template <typename T, int Prealloc1, int Prealloc2>
+inline bool operator>=(const QVarLengthArray<T, Prealloc1> &lhs, const QVarLengthArray<T, Prealloc2> &rhs)
+    Q_DECL_NOEXCEPT_EXPR(noexcept(lhs < rhs))
+{
+    return !(lhs < rhs);
+}
+
 QT_END_NAMESPACE
 
 #endif // QVARLENGTHARRAY_H
-- 
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