MINOR: lua: add utility function for check boolean argument
Strangely, the Lua API doesn't provides a function like
luaL_checkboolean(). This little function add this one.
diff --git a/include/proto/hlua_fcn.h b/include/proto/hlua_fcn.h
index e4ce5f0..291bd42 100644
--- a/include/proto/hlua_fcn.h
+++ b/include/proto/hlua_fcn.h
@@ -1,6 +1,8 @@
#ifndef _PROTO_HLUA_FCN_H
#define _PROTO_HLUA_FCN_H
+int hlua_checkboolean(lua_State *L, int index);
+
void hlua_class_const_int(lua_State *L, const char *name, int value);
void hlua_class_const_str(lua_State *L, const char *name, const char *value);
void hlua_class_function(lua_State *L, const char *name, int (*function)(lua_State *L));
diff --git a/src/hlua_fcn.c b/src/hlua_fcn.c
index 3af4f6e..cff1e3a 100644
--- a/src/hlua_fcn.c
+++ b/src/hlua_fcn.c
@@ -41,6 +41,13 @@
static struct field stats[STATS_LEN];
+int hlua_checkboolean(lua_State *L, int index)
+{
+ if (!lua_isboolean(L, index))
+ luaL_argerror(L, index, "boolean expected");
+ return lua_toboolean(L, index);
+}
+
/* This function gets a struct field and convert it in Lua
* variable. The variable is pushed at the top of the stak.
*/