From ad1cadf3512f3dd789151983e5c93af411f929db Mon Sep 17 00:00:00 2001
From: Tuowen Zhao <ztuowen@gmail.com>
Date: Sat, 17 Sep 2016 19:27:15 +0000
Subject: restructure

---
 omegalib/omega_lib/include/basic/Section.c | 79 ++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 omegalib/omega_lib/include/basic/Section.c

(limited to 'omegalib/omega_lib/include/basic/Section.c')

diff --git a/omegalib/omega_lib/include/basic/Section.c b/omegalib/omega_lib/include/basic/Section.c
new file mode 100644
index 0000000..754e002
--- /dev/null
+++ b/omegalib/omega_lib/include/basic/Section.c
@@ -0,0 +1,79 @@
+#include <assert.h>
+
+namespace omega {
+
+template <class T> Section<T>::Section(Sequence<T> *s, int start, int length)
+    {
+    assert(s->size() >= start-1 + length);
+    it = s;
+    _start = start;
+    _length = length;
+    }
+
+template <class T> Iterator<T> *Section<T>::new_iterator()
+    {
+    return new Section_Iterator<T>(*this);
+    }
+
+template <class T> const T &Section<T>::operator[](int i) const
+    {
+    assert(1 <= i && i <= size());
+    return (*it)[i+(_start-1)];
+    }
+
+template <class T> T &Section<T>::operator[](int i)
+    {
+    assert(1 <= i && i <= size());
+    return (*it)[i+(_start-1)];
+    }
+
+template <class T> int Section<T>::index(const T &var) const
+    {
+    int i;
+    for (i=1; i<=size(); i++)
+	if ((*this)[i] == var)
+	    return i;
+    return 0;
+    }
+
+template <class T> int Section<T>::size() const
+    {
+    return _length;
+    }
+
+
+template <class T> Section_Iterator<T>::Section_Iterator(Section<T> &sec)
+    {
+    it = sec.it->new_iterator();
+    for (int i = 1; i < sec._start; i++)
+	(*it)++;
+    remaining = sec.size();
+    }
+
+
+template <class T> Section_Iterator<T>::Section_Iterator(const Section_Iterator<T> &si) : it(si.it), remaining(si.remaining) {}
+
+
+template <class T> void Section_Iterator<T>::operator++()
+    {  this->operator++(0);  }
+
+template <class T> void Section_Iterator<T>::operator++(int)
+    {
+    if (remaining > 0)
+	{
+	(*it)++;
+	remaining--;
+	}
+    }
+
+template <class T> bool Section_Iterator<T>::live() const
+    {
+    return (remaining > 0);
+    }
+
+template <class T> Iterator<T> *Section_Iterator<T>::new_copy() const
+    {
+    return new Section_Iterator<T>(*this);
+    }
+
+} // namespace
-- 
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