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degesch: Lua: add a "server" property to buffers

This commit is contained in:
Přemysl Eric Janouch 2015-11-24 21:52:16 +01:00
parent 87e1236b30
commit 4a287a724e
1 changed files with 78 additions and 60 deletions
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138
degesch.c
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@ -7362,40 +7362,6 @@ struct lua_buffer
struct weak_ref_link *weak_ref; ///< A weak reference link struct weak_ref_link *weak_ref; ///< A weak reference link
}; };
static int
lua_buffer_gc (lua_State *L)
{
struct lua_buffer *wrapper = luaL_checkudata (L, 1, XLUA_BUFFER_METATABLE);
if (wrapper->buffer)
{
lua_cache_invalidate (L, wrapper->buffer);
buffer_weak_unref (wrapper->buffer, &wrapper->weak_ref);
wrapper->buffer = NULL;
}
return 0;
}
static int
lua_buffer_log (lua_State *L)
{
struct lua_buffer *wrapper = luaL_checkudata (L, 1, XLUA_BUFFER_METATABLE);
luaL_argcheck (L, wrapper->buffer, 1, "dead reference used");
const char *message = luaL_checkstring (L, 2);
struct buffer *buffer = wrapper->buffer;
log_full (wrapper->plugin->ctx, buffer->server, buffer,
BUFFER_LINE_STATUS, "#s", message);
return 0;
}
static luaL_Reg lua_buffer_table[] =
{
// TODO: some useful methods or values
{ "__gc", lua_buffer_gc },
{ "log", lua_buffer_log },
{ NULL, NULL }
};
static void static void
lua_buffer_invalidate (void *object, void *user_data) lua_buffer_invalidate (void *object, void *user_data)
{ {
@ -7433,6 +7399,84 @@ struct lua_server
struct weak_ref_link *weak_ref; ///< A weak reference link struct weak_ref_link *weak_ref; ///< A weak reference link
}; };
static void
lua_server_invalidate (void *object, void *user_data)
{
struct lua_server *wrapper = user_data;
wrapper->server = NULL;
wrapper->weak_ref = NULL;
// This can in theory call the GC, order isn't arbitrary here
lua_cache_invalidate (wrapper->plugin->L, object);
}
static void
lua_plugin_push_server (struct lua_plugin *plugin, struct server *server)
{
lua_State *L = plugin->L;
if (lua_cache_get (L, server))
return;
struct lua_server *wrapper = lua_newuserdata (L, sizeof *wrapper);
luaL_setmetatable (L, XLUA_SERVER_METATABLE);
wrapper->plugin = plugin;
wrapper->server = server;
wrapper->weak_ref = server_weak_ref
(server, lua_server_invalidate, wrapper);
lua_cache_store (L, server, -1);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static int
lua_buffer_gc (lua_State *L)
{
struct lua_buffer *wrapper = luaL_checkudata (L, 1, XLUA_BUFFER_METATABLE);
if (wrapper->buffer)
{
lua_cache_invalidate (L, wrapper->buffer);
buffer_weak_unref (wrapper->buffer, &wrapper->weak_ref);
wrapper->buffer = NULL;
}
return 0;
}
static int
lua_buffer_get_server (lua_State *L)
{
struct lua_buffer *wrapper = luaL_checkudata (L, 1, XLUA_BUFFER_METATABLE);
luaL_argcheck (L, wrapper->buffer, 1, "dead reference used");
if (wrapper->buffer->server)
lua_plugin_push_server (wrapper->plugin, wrapper->buffer->server);
else
lua_pushnil (L);
return 1;
}
static int
lua_buffer_log (lua_State *L)
{
struct lua_buffer *wrapper = luaL_checkudata (L, 1, XLUA_BUFFER_METATABLE);
luaL_argcheck (L, wrapper->buffer, 1, "dead reference used");
const char *message = luaL_checkstring (L, 2);
struct buffer *buffer = wrapper->buffer;
log_full (wrapper->plugin->ctx, buffer->server, buffer,
BUFFER_LINE_STATUS, "#s", message);
return 0;
}
static luaL_Reg lua_buffer_table[] =
{
// TODO: some useful methods or values
{ "__gc", lua_buffer_gc },
{ "get_server", lua_buffer_get_server },
{ "log", lua_buffer_log },
{ NULL, NULL }
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static int static int
lua_server_gc (lua_State *L) lua_server_gc (lua_State *L)
{ {
@ -7479,32 +7523,6 @@ static luaL_Reg lua_server_table[] =
{ NULL, NULL } { NULL, NULL }
}; };
static void
lua_server_invalidate (void *object, void *user_data)
{
struct lua_server *wrapper = user_data;
wrapper->server = NULL;
wrapper->weak_ref = NULL;
// This can in theory call the GC, order isn't arbitrary here
lua_cache_invalidate (wrapper->plugin->L, object);
}
static void
lua_plugin_push_server (struct lua_plugin *plugin, struct server *server)
{
lua_State *L = plugin->L;
if (lua_cache_get (L, server))
return;
struct lua_server *wrapper = lua_newuserdata (L, sizeof *wrapper);
luaL_setmetatable (L, XLUA_SERVER_METATABLE);
wrapper->plugin = plugin;
wrapper->server = server;
wrapper->weak_ref = server_weak_ref
(server, lua_server_invalidate, wrapper);
lua_cache_store (L, server, -1);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
#define XLUA_HOOK_METATABLE "hook" ///< Identifier for the Lua metatable #define XLUA_HOOK_METATABLE "hook" ///< Identifier for the Lua metatable