Reorganizing source code. Created util dir

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

src/util/scoped_ptr_vector.h

@@ -0,0 +1,55 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    scoped_ptr_vector.h
+
+Abstract:
+
+    Basic template of scoped ptrs.
+    TODO: improve
+
+Author:
+
+    Leonardo (leonardo) 2011-12-29
+
+Notes:
+
+--*/
+#ifndef _SCOPED_PTR_VECTOR_H_
+#define _SCOPED_PTR_VECTOR_H_
+
+#include"vector.h"
+#include"util.h"
+
+template<typename T>
+class scoped_ptr_vector {
+    ptr_vector<T> m_vector;
+public:
+    ~scoped_ptr_vector() { reset(); }
+    void reset() { std::for_each(m_vector.begin(), m_vector.end(), delete_proc<T>()); m_vector.reset(); }
+    void push_back(T * ptr) { m_vector.push_back(ptr); }
+    T * operator[](unsigned idx) const { return m_vector[idx]; }
+    void set(unsigned idx, T * ptr) { 
+        if (m_vector[idx] == ptr) 
+            return; 
+        dealloc(m_vector[idx]); 
+        m_vector[idx] = ptr; 
+    }
+    unsigned size() const { return m_vector.size(); }
+    bool empty() const { return m_vector.empty(); }
+    void resize(unsigned sz) { 
+        if (sz < m_vector.size()) {
+            for (unsigned i = m_vector.size(); i < sz; i++)
+                dealloc(m_vector[i]);
+            m_vector.shrink(sz); 
+        }
+        else {
+            for (unsigned i = m_vector.size(); i < sz; i++)
+                push_back(0);
+        }
+    }
+};
+
+#endif