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luaobject: import 

Signed-off-by: Julien Danjou <julien@danjou.info>
This commit is contained in:
Julien Danjou 2009-04-09 10:57:00 +02:00
parent be752cc81c
commit a1480ef7d8
2 changed files with 88 additions and 11 deletions
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87
common/luaobject.h Normal file
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@ -0,0 +1,87 @@
/*
* luaobject.h - useful functions for handling Lua objects
*
* Copyright © 2009 Julien Danjou <julien@danjou.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 AWESOME_COMMON_LUAOBJECT
#define AWESOME_COMMON_LUAOBJECT
#include <lauxlib.h>
#include "common/array.h"
/** Type for Lua references */
typedef int luaA_ref;
static inline int
luaA_settype(lua_State *L, const char *type)
{
luaL_getmetatable(L, type);
lua_setmetatable(L, -2);
return 1;
}
DO_ARRAY(luaA_ref, luaA_ref, DO_NOTHING)
#define LUA_OBJECT_FUNCS(type, prefix, lua_type) \
static inline type * \
prefix##_new(lua_State *L) \
{ \
type *p = lua_newuserdata(L, sizeof(type)); \
p_clear(p, 1); \
luaA_settype(L, lua_type); \
return p; \
} \
\
static inline int \
prefix##_push(lua_State *L, type *item) \
{ \
if(item) \
{ \
assert(item->refs.len); \
lua_rawgeti(L, LUA_REGISTRYINDEX, item->refs.tab[0]); \
} \
else \
lua_pushnil(L); \
return 1; \
} \
\
static inline type * \
prefix##_ref(lua_State *L) \
{ \
if(lua_isnil(L, -1)) \
return NULL; \
type *item = luaL_checkudata(L, -1, lua_type); \
luaA_ref_array_append(&item->refs, luaL_ref(L, LUA_REGISTRYINDEX)); \
return item; \
} \
\
static inline void \
prefix##_unref(lua_State *L, type *item) \
{ \
if(item) \
{ \
assert(items->refs.len); \
luaL_unref(L, LUA_REGISTRYINDEX, item->refs.tab[0]); \
luaA_ref_array_take(&item->refs, 0); \
} \
}
#endif
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

12
luaa.h
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@ -33,9 +33,7 @@
#include "draw.h"
#include "common/util.h"
/** Type for Lua function */
typedef int luaA_ref;
#include "common/luaobject.h"
#define luaA_deprecate(L, repl) \
luaA_warn(L, "%s: This function is deprecated and will be removed, see %s", \
@ -218,14 +216,6 @@ luaA_getopt_boolean(lua_State *L, int idx, const char *name, bool def)
return b;
}
static inline int
luaA_settype(lua_State *L, const char *type)
{
luaL_getmetatable(L, type);
lua_setmetatable(L, -2);
return 1;
}
/** Push a area type to a table on stack.
* \param L The Lua VM state.
* \param geometry The area geometry to push.