From 98753db9fdc954f745801638496ff54cc699378e Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@dbsgeo.com>
Date: Mon, 25 Jun 2012 17:57:52 -0700
Subject: [PATCH] cleaner approach to a compile time magic alpha number for
 grid buffers

---
 include/mapnik/grid/grid.hpp |  3 ++-
 src/build.py                 |  1 -
 src/grid/grid.cpp            | 31 -------------------------------
 3 files changed, 2 insertions(+), 33 deletions(-)
 delete mode 100644 src/grid/grid.cpp

diff --git a/include/mapnik/grid/grid.hpp b/include/mapnik/grid/grid.hpp
index 708f8bddc..1f838a2d3 100644
--- a/include/mapnik/grid/grid.hpp
+++ b/include/mapnik/grid/grid.hpp
@@ -45,6 +45,7 @@
 #include <string>
 #include <cassert>
 #include <vector>
+#include <boost/integer_traits.hpp>
 
 namespace mapnik
 {
@@ -60,7 +61,7 @@ public:
     typedef std::map<value_type, lookup_type> feature_key_type;
     typedef std::map<lookup_type, value_type> key_type;
     typedef std::map<lookup_type, mapnik::feature_ptr> feature_type;
-    static const value_type base_mask;
+    static const value_type base_mask = boost::integer_traits<value_type>::const_min;
 
 private:
     unsigned width_;
diff --git a/src/build.py b/src/build.py
index f34a067d8..2e0e8183f 100644
--- a/src/build.py
+++ b/src/build.py
@@ -260,7 +260,6 @@ if env['RUNTIME_LINK'] == "static":
 # grid backend
 source += Split(
     """
-    grid/grid.cpp
     grid/grid_renderer.cpp
     grid/process_building_symbolizer.cpp
     grid/process_line_pattern_symbolizer.cpp
diff --git a/src/grid/grid.cpp b/src/grid/grid.cpp
deleted file mode 100644
index ade783a7b..000000000
--- a/src/grid/grid.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-/*****************************************************************************
- *
- * This file is part of Mapnik (c++ mapping toolkit)
- *
- * Copyright (C) 2012 Artem Pavlenko
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- *****************************************************************************/
-
-// mapnik
-#include <mapnik/grid/grid.hpp>
-
-namespace mapnik
-{
-
-template<> const grid::value_type grid::base_mask = std::numeric_limits<int>::min();
-
-}