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Make Lua std::set bindings more generic, (prepare for multiset etc)

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This commit is contained in:
Robin Gareus 2017-03-18 14:34:02 +01:00
parent a1116ebd6f
commit bc300ddab7
2 changed files with 7 additions and 12 deletions
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14
libs/lua/LuaBridge/detail/CFunctions.h
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@ -1331,10 +1331,9 @@ struct CFunc
// generate std::set from table keys ( table[member] = true )
// http://www.lua.org/pil/11.5.html
template <class T>
template <class T, class C>
static int tableToSet (lua_State *L)
{
typedef std::set<T> C;
C * const t = Userdata::get <C> (L, 1, true);
if (!t) { return luaL_error (L, "invalid pointer to std::set"); }
if (!lua_istable (L, -1)) { return luaL_error (L, "argument is not a table"); }
@ -1358,10 +1357,9 @@ struct CFunc
// iterate over a std::set, explicit "true" value.
// compare to http://www.lua.org/pil/11.5.html
template <class T>
template <class T, class C>
static int setIterIter (lua_State *L)
{
typedef std::set<T> C;
typedef typename C::const_iterator IterType;
IterType * const end = static_cast <IterType * const> (lua_touserdata (L, lua_upvalueindex (2)));
IterType * const iter = static_cast <IterType * const> (lua_touserdata (L, lua_upvalueindex (1)));
@ -1377,24 +1375,22 @@ struct CFunc
}
// generate iterator
template <class T>
template <class T, class C>
static int setIter (lua_State *L)
{
typedef std::set<T> C;
C * const t = Userdata::get <C> (L, 1, false);
if (!t) { return luaL_error (L, "invalid pointer to std::set"); }
typedef typename C::const_iterator IterType;
new (lua_newuserdata (L, sizeof (IterType*))) IterType (t->begin());
new (lua_newuserdata (L, sizeof (IterType*))) IterType (t->end());
lua_pushcclosure (L, setIterIter<T>, 2);
lua_pushcclosure (L, setIterIter<T, C>, 2);
return 1;
}
// generate table from std::set
template <class T>
template <class T, class C>
static int setToTable (lua_State *L)
{
typedef std::set<T> C;
C const* const t = Userdata::get <C> (L, 1, true);
if (!t) { return luaL_error (L, "invalid pointer to std::set"); }

5
libs/lua/LuaBridge/detail/Namespace.h
View File

@ -1824,9 +1824,8 @@ public:
.addFunction ("clear", (void (LT::*)())&LT::clear)
.addFunction ("empty", &LT::empty)
.addFunction ("size", &LT::size)
.addExtCFunction ("add", &CFunc::tableToSet<T>)
.addExtCFunction ("iter", &CFunc::setIter<T>)
.addExtCFunction ("table", &CFunc::setToTable<T>);
.addExtCFunction ("iter", &CFunc::setIter<T, LT>)
.addExtCFunction ("table", &CFunc::setToTable<T, LT>);
}
template <unsigned int T>