From b605b95749aad90b53e6c58a1ee43b50f8217e7c Mon Sep 17 00:00:00 2001 From: Loïc Blot Date: Wed, 29 Mar 2017 13:34:57 +0200 Subject: 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 --- src/content_mapblock.cpp | 5 +++-- src/reflowscan.cpp | 5 +++-- src/util/cpp11.h | 32 ++++++++++++++++++++++++++++++++ 3 files changed, 38 insertions(+), 4 deletions(-) create mode 100644 src/util/cpp11.h 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 *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 + +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 -- cgit v1.2.3