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Keep math.mod and string.gfind when LuaJIT 2.1 is used

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Code written assuming LuaJIT 2.0 is being used might rely on them, even though they're deprecated (and removed in LuaJIT 2.1).
This commit is contained in:
Alex Szpakowski
2020-12-23 12:58:26 -04:00
parent bfaae71f2a
commit f3afdee70a
1 changed files with 24 additions and 0 deletions
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src/modules/love/love.cpp
+24
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@@ -362,6 +362,23 @@ static int w_deprecation__gc(lua_State *)
return 0;
}
static void luax_addcompatibilityalias(lua_State *L, const char *module, const char *name, const char *alias)
{
lua_getglobal(L, module);
if (lua_istable(L, -1))
{
lua_getfield(L, -1, alias);
bool hasalias = !lua_isnoneornil(L, -1);
lua_pop(L, 1);
if (!hasalias)
{
lua_getfield(L, -1, name);
lua_setfield(L, -2, alias);
}
}
lua_pop(L, 1);
}
int luaopen_love(lua_State *L)
{
love::luax_insistpinnedthread(L);
@@ -469,6 +486,13 @@ int luaopen_love(lua_State *L)
love::luax_require(L, "love.data");
lua_pop(L, 1);
#if LUA_VERSION_NUM <= 501
// These are deprecated in Lua 5.1. LuaJIT 2.1 removes them, but code
// written assuming LuaJIT 2.0 or Lua 5.1 is used might still rely on them.
luax_addcompatibilityalias(L, "math", "fmod", "mod");
luax_addcompatibilityalias(L, "string", "gmatch", "gfind");
#endif
#ifdef LOVE_ENABLE_LUASOCKET
love::luasocket::__open(L);
#endif