From c812c92d1a1835f0bda783e709481188c8d92225 Mon Sep 17 00:00:00 2001
From: Ben Longbons <b.r.longbons@gmail.com>
Date: Sat, 15 Mar 2014 19:34:59 -0700
Subject: Clean up header organization

---
 src/compat/iter.hpp | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 src/compat/iter.hpp

(limited to 'src/compat/iter.hpp')

diff --git a/src/compat/iter.hpp b/src/compat/iter.hpp
new file mode 100644
index 0000000..7793d90
--- /dev/null
+++ b/src/compat/iter.hpp
@@ -0,0 +1,97 @@
+#ifndef TMWA_COMPAT_ITER_HPP
+#define TMWA_COMPAT_ITER_HPP
+//    iter.hpp - tools for dealing with iterators
+//
+//    Copyright © 2012-2014 Ben Longbons <b.r.longbons@gmail.com>
+//
+//    This file is part of The Mana World (Athena server)
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//    This program is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# include "../sanity.hpp"
+
+# include <iterator>
+
+
+/// Simple class to use a pair of iterators with foreach
+template<class It>
+class IteratorPair
+{
+    It _b, _e;
+public:
+    IteratorPair(It b, It e)
+    : _b(b), _e(e)
+    {}
+
+    It begin() { return _b; }
+    It end() { return _e; }
+};
+
+template<class It>
+IteratorPair<It> iterator_pair(It b, It e)
+{
+    return {b, e};
+}
+
+template<class T>
+class PassthroughMath
+{
+public:
+    static
+    T inced(T v) { return ++v; }
+};
+
+// An iterator that just directly contains an integer-like value
+// TODO port this once the new integer API happens
+template<class T, class Math=PassthroughMath<T>>
+class ValueIterator
+{
+    T value;
+public:
+    typedef std::forward_iterator_tag iterator_category;
+    typedef void difference_type;
+    typedef T value_type;
+    typedef void reference;
+    typedef void pointer;
+public:
+    ValueIterator(T v)
+    : value(v)
+    {}
+
+    T operator *()
+    {
+        return value;
+    }
+    ValueIterator& operator++ ()
+    {
+        value = Math::inced(value);
+        return *this;
+    }
+    friend bool operator == (ValueIterator l, ValueIterator r)
+    {
+        return l.value == r.value;
+    }
+    friend bool operator != (ValueIterator l, ValueIterator r)
+    {
+        return !(l == r);
+    }
+};
+
+template<class T>
+IteratorPair<ValueIterator<T>> value_range(T b, T e)
+{
+    return {b, e};
+}
+
+#endif // TMWA_COMPAT_ITER_HPP
-- 
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