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authorLoïc Blot <nerzhul@users.noreply.github.com>2017-03-29 13:34:57 +0200
committerGitHub <noreply@github.com>2017-03-29 13:34:57 +0200
commitb605b95749aad90b53e6c58a1ee43b50f8217e7c (patch)
treef036a6d80ea539aad95e55443720b97b74668a9b
parent5e806690fc5e0067247bbc1e541ba03b83fb761b (diff)
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Add CPP11 header to define nullptr & constexpr (#5471)
This header permit to use nullptr & constexpr keywords in portable code segments and benefit from nullptr & constexpr when using C++11 and greater
-rw-r--r--src/content_mapblock.cpp5
-rw-r--r--src/reflowscan.cpp5
-rw-r--r--src/util/cpp11.h32
3 files changed, 38 insertions, 4 deletions
diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
index 18b4ef6dd..d0cb50db3 100644
--- a/src/content_mapblock.cpp
+++ b/src/content_mapblock.cpp
@@ -29,6 +29,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "client.h"
#include "log.h"
#include "noise.h"
+#include "util/cpp11.h"
// Distance of light extrapolation (for oversized nodes)
// After this distance, it gives up and considers light level constant
@@ -42,7 +43,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
// Corresponding offsets are listed in g_27dirs
#define FRAMED_NEIGHBOR_COUNT 18
-static const v3s16 light_dirs[8] = {
+static constexpr v3s16 light_dirs[8] = {
v3s16(-1, -1, -1),
v3s16(-1, -1, 1),
v3s16(-1, 1, -1),
@@ -54,7 +55,7 @@ static const v3s16 light_dirs[8] = {
};
// Standard index set to make a quad on 4 vertices
-static const u16 quad_indices[] = {0, 1, 2, 2, 3, 0};
+static constexpr u16 quad_indices[] = {0, 1, 2, 2, 3, 0};
const std::string MapblockMeshGenerator::raillike_groupname = "connect_to_raillike";
diff --git a/src/reflowscan.cpp b/src/reflowscan.cpp
index 49b9406d7..eec371022 100644
--- a/src/reflowscan.cpp
+++ b/src/reflowscan.cpp
@@ -22,12 +22,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "mapblock.h"
#include "nodedef.h"
#include "util/timetaker.h"
+#include "util/cpp11.h"
ReflowScan::ReflowScan(Map *map, INodeDefManager *ndef) :
m_map(map),
m_ndef(ndef),
- m_liquid_queue(NULL)
+ m_liquid_queue(nullptr)
{
}
@@ -41,7 +42,7 @@ void ReflowScan::scan(MapBlock *block, UniqueQueue<v3s16> *liquid_queue)
// scanned block. Blocks are only added to the lookup if they are really
// needed. The lookup is indexed manually to use the same index in a
// bit-array (of uint32 type) which stores for unloaded blocks that they
- // were already fetched from Map but were actually NULL.
+ // were already fetched from Map but were actually nullptr.
memset(m_lookup, 0, sizeof(m_lookup));
int block_idx = 1 + (1 * 9) + (1 * 3);
m_lookup[block_idx] = block;
diff --git a/src/util/cpp11.h b/src/util/cpp11.h
new file mode 100644
index 000000000..14913cb86
--- /dev/null
+++ b/src/util/cpp11.h
@@ -0,0 +1,32 @@
+/*
+Minetest
+Copyright (C) 2016 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+This program 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 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef MT_CPP11_HEADER
+#define MT_CPP11_HEADER
+
+#if __cplusplus < 201103L || _MSC_VER < 1600
+#define USE_CPP11_FAKE_KEYWORD
+#endif
+
+#ifdef USE_CPP11_FAKE_KEYWORD
+#define constexpr const
+#define nullptr NULL
+#endif
+
+#endif