Method Query

OsiInterface/LuaBinding.cpp/LuaBinding.cpp:377–420

		}

		static int Query(lua_State * L)
		{
			int numArgs = lua_gettop(L);
			if (numArgs < 1) {
				luaL_error(L, "Osiris query has no function data!");
			}

			auto signature = LuaOsiSignature::TypeCheck(L, 1);
			if (signature->type != FunctionType::Query) {
				luaL_error(L, "Expected a Query node");
			}

			if (numArgs - 1 != signature->numInputArgs) {
				luaL_error(L, "Incorrect number of arguments for query '%s'; expected %d, got %d", 
					signature->name.c_str(), signature->numInputArgs, numArgs - 1);
			}

			OsiArgumentListPin args(signature->numArgs);
			uint32_t inputArg = 2;
			for (uint32_t i = 0; i < signature->numArgs; i++) {
				if (signature->args[i].output) {
					args.Args()[i].Value.TypeId = signature->args[i].type;
				} else {
					LuaToOsiArg(L, inputArg++, args.Args()[i], signature->args[i]);
				}
			}

			bool handled = gOsirisProxy->GetWrappers().Query.CallWithHooks(signature->functionHandle, args.Args());
			uint32_t numOutputs = signature->numArgs - signature->numInputArgs;
			if (handled) {
				for (uint32_t i = 0; i < signature->numArgs; i++) {
					if (signature->args[i].output) {
						OsiToLuaArg(L, args.Args()[i]);
						numOutputs++;
					}
				}
			} else {
				for (uint32_t i = 0; i < signature->numArgs - signature->numInputArgs; i++) {
					lua_pushnil(L);
				}
			}

			return signature->numArgs - signature->numInputArgs;
		}

	private:
		OsiArgumentPool argumentPool_;