static void _json_to_lua(lua_State *l, const Json &data)
{
LUA_DEBUG_START(l);
switch (data.type()) {
case Json::nullValue:
lua_pushnil(l);
break;
case Json::intValue:
case Json::uintValue:
case Json::realValue:
lua_pushnumber(l, data.asDouble());
break;
case Json::stringValue: {
const std::string &str(data.asString());
lua_pushlstring(l, str.c_str(), str.size());
break;
}
case Json::booleanValue:
lua_pushboolean(l, data.asBool());
break;
case Json::arrayValue: {
lua_newtable(l);
for (int i = 0; i < int(data.size()); i++) {
lua_pushinteger(l, i+1);
_json_to_lua(l, data[i]);
lua_rawset(l, -3);
}
break;
}
case Json::objectValue: {
lua_newtable(l);
for (Json::const_iterator i = data.begin(); i != data.end(); ++i) {
const std::string &key(i.key().asString());
lua_pushlstring(l, key.c_str(), key.size());
_json_to_lua(l, *i);
lua_rawset(l, -3);
}
break;
}
}
LUA_DEBUG_END(l, 1);
}
static int json_parse(lua_State *L)
{
size_t len;
const char *json = luaL_checklstring(L, 1, &len);
struct json_state s = {
.tok = json_tokener_new()
};
if (!s.tok)
return 0;
s.obj = json_tokener_parse_ex(s.tok, json, len);
s.err = json_tokener_get_error(s.tok);
if (s.obj)
{
_json_to_lua(L, s.obj);
json_object_put(s.obj);
}
else
{
lua_pushnil(L);
}
if (s.err == json_tokener_continue)
s.err = json_tokener_error_parse_eof;
if (s.err)
lua_pushstring(L, json_tokener_error_desc(s.err));
json_tokener_free(s.tok);
return (1 + !!s.err);
}
static void _json_to_lua(lua_State *L, struct json_object *obj)
{
int n;
switch (json_object_get_type(obj))
{
case json_type_object:
lua_newtable(L);
json_object_object_foreach(obj, key, val)
{
_json_to_lua(L, val);
lua_setfield(L, -2, key);
}
break;
case json_type_array:
lua_newtable(L);
for (n = 0; n < json_object_array_length(obj); n++)
{
_json_to_lua(L, json_object_array_get_idx(obj, n));
lua_rawseti(L, -2, n + 1);
}
break;
case json_type_boolean:
lua_pushboolean(L, json_object_get_boolean(obj));
break;
case json_type_int:
lua_pushinteger(L, json_object_get_int(obj));
break;
case json_type_double:
lua_pushnumber(L, json_object_get_double(obj));
break;
case json_type_string:
lua_pushstring(L, json_object_get_string(obj));
break;
case json_type_null:
lua_pushnil(L);
break;
}
static void _success_callback(const Json &data, void *userdata)
{
CallbackPair *cp = reinterpret_cast<CallbackPair*>(userdata);
if (!cp->successCallback.IsValid()) return;
cp->successCallback.PushCopyToStack();
_json_to_lua(cp->lua, data);
pi_lua_protected_call(cp->lua, 1, 0);
delete cp;
}
