add slots to DAQmx-property-containing classes (#664)

* add slots to attribute-containing classes

CHANGELOG.md

@@ -27,7 +27,7 @@ All notable changes to this project will be documented in this file.
     * ...
 
 * ### Resolved Issues
-    * ...
+    *  [656: Missing usage of slots in classes with DAQmx attributes](https://github.com/ni/nidaqmx-python/issues/656)
 
 * ### Major Changes
     * Added support for mioDAQ configurable digital voltage.

generated/nidaqmx/system/_watchdog_modules/expiration_state.py

@@ -10,6 +10,8 @@ class ExpirationState:
     """
     Represents a DAQmx Watchdog expiration state.
     """
+    __slots__ = ('_handle', '_physical_channel', '_interpreter')
+
     def __init__(self, task_handle, physical_channel, interpreter):
         self._handle = task_handle
         self._physical_channel = physical_channel        

generated/nidaqmx/system/system.py

@@ -33,6 +33,7 @@ class System:
     operations on DAQ hardware, and creates classes from which you can get
     information about the hardware.
     """
+    __slots__ = ('_interpreter')
 
     def __init__(self, grpc_options=None):
         """

generated/nidaqmx/system/watchdog.py

@@ -21,6 +21,8 @@ class WatchdogTask:
     """
     Represents the watchdog configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_close_on_exit', '_saved_name', '_interpreter', '_expiration_states', '__weakref__')
+
     def __init__(self, device_name, task_name='', timeout=10, grpc_options=None):
         """
         Creates and configures a task that controls the watchdog timer of a

generated/nidaqmx/task/_export_signals.py

@@ -9,6 +9,8 @@ class ExportSignals:
     """
     Represents the exported signal configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/_in_stream.py

@@ -22,6 +22,8 @@ class InStream:
     used in conjunction with reader classes to read samples from an
     NI-DAQmx task.
     """
+    __slots__ = ('_task', '_handle', '_interpreter', '_timeout')
+
     def __init__(self, task, interpreter):
         self._task = task
         self._handle = task._handle

generated/nidaqmx/task/_out_stream.py

@@ -12,6 +12,8 @@ class OutStream:
     used in conjunction with writer classes to write samples to an
     NI-DAQmx task.
     """
+    __slots__ = ('_task', '_handle', '_interpreter', '_auto_start', '_timeout')
+
     def __init__(self, task, interpreter):
         self._task = task
         self._handle = task._handle

generated/nidaqmx/task/_task.py

@@ -55,6 +55,10 @@ class Task:
     """
     Represents a DAQmx Task.
     """
+    __slots__ = ('_handle', '_close_on_exit', '_saved_name', '_grpc_options', '_event_handlers', '_interpreter',
+                 '_ai_channels', '_ao_channels', '_ci_channels', '_co_channels', '_di_channels', '_do_channels',
+                 '_export_signals', '_in_stream', '_timing', '_triggers', '_out_stream', '_event_handler_lock',
+                 '__weakref__')
 
     def __init__(self, new_task_name='', *, grpc_options=None):
         """

generated/nidaqmx/task/_timing.py

@@ -12,6 +12,8 @@ class Timing:
     """
     Represents the timing configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/triggering/_arm_start_trigger.py

@@ -8,6 +8,8 @@ class ArmStartTrigger:
     """
     Represents the arm start trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/triggering/_handshake_trigger.py

@@ -8,6 +8,8 @@ class HandshakeTrigger:
     """
     Represents the handshake trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/triggering/_pause_trigger.py

@@ -10,6 +10,8 @@ class PauseTrigger:
     """
     Represents the pause trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/triggering/_reference_trigger.py

@@ -12,6 +12,8 @@ class ReferenceTrigger:
     """
     Represents the reference trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/triggering/_start_trigger.py

@@ -13,6 +13,8 @@ class StartTrigger:
     """
     Represents the start trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

generated/nidaqmx/task/triggering/_triggers.py

@@ -13,6 +13,8 @@ class Triggers:
     """
     Represents the trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter', '_arm_start_trigger', '_handshake_trigger', '_pause_trigger', '_reference_trigger', '_start_trigger')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/system/_watchdog_modules/expiration_state.py.mako

@@ -16,6 +16,8 @@ class ExpirationState:
     """
     Represents a DAQmx Watchdog expiration state.
     """
+    __slots__ = ('_handle', '_physical_channel', '_interpreter')
+
     def __init__(self, task_handle, physical_channel, interpreter):
         self._handle = task_handle
         self._physical_channel = physical_channel        

src/codegen/templates/system/system.py.mako

@@ -40,6 +40,7 @@ class System:
     operations on DAQ hardware, and creates classes from which you can get
     information about the hardware.
     """
+    __slots__ = ('_interpreter')
 
     def __init__(self, grpc_options=None):
         """

src/codegen/templates/system/watchdog.py.mako

@@ -27,6 +27,8 @@ class WatchdogTask:
     """
     Represents the watchdog configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_close_on_exit', '_saved_name', '_interpreter', '_expiration_states', '__weakref__')
+
     def __init__(self, device_name, task_name='', timeout=10, grpc_options=None):
         """
         Creates and configures a task that controls the watchdog timer of a

src/codegen/templates/task/_export_signals.py.mako

@@ -21,6 +21,8 @@ class ExportSignals:
     """
     Represents the exported signal configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/_in_stream.py.mako

@@ -27,6 +27,8 @@ class InStream:
     used in conjunction with reader classes to read samples from an
     NI-DAQmx task.
     """
+    __slots__ = ('_task', '_handle', '_interpreter', '_timeout')
+
     def __init__(self, task, interpreter):
         self._task = task
         self._handle = task._handle

src/codegen/templates/task/_out_stream.py.mako

@@ -18,6 +18,8 @@ class OutStream:
     used in conjunction with writer classes to write samples to an
     NI-DAQmx task.
     """
+    __slots__ = ('_task', '_handle', '_interpreter', '_auto_start', '_timeout')
+
     def __init__(self, task, interpreter):
         self._task = task
         self._handle = task._handle

src/codegen/templates/task/_timing.py.mako

@@ -24,6 +24,8 @@ class Timing:
     """
     Represents the timing configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/triggering/_arm_start_trigger.py.mako

@@ -22,6 +22,8 @@ class ArmStartTrigger:
     """
     Represents the arm start trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/triggering/_handshake_trigger.py.mako

@@ -21,6 +21,8 @@ class HandshakeTrigger:
     """
     Represents the handshake trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/triggering/_pause_trigger.py.mako

@@ -22,6 +22,8 @@ class PauseTrigger:
     """
     Represents the pause trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/triggering/_reference_trigger.py.mako

@@ -24,6 +24,8 @@ class ReferenceTrigger:
     """
     Represents the reference trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/triggering/_start_trigger.py.mako

@@ -25,6 +25,8 @@ class StartTrigger:
     """
     Represents the start trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/codegen/templates/task/triggering/_triggers.py.mako

@@ -28,6 +28,8 @@ class Triggers:
     """
     Represents the trigger configurations for a DAQmx task.
     """
+    __slots__ = ('_handle', '_interpreter', '_arm_start_trigger', '_handshake_trigger', '_pause_trigger', '_reference_trigger', '_start_trigger')
+
     def __init__(self, task_handle, interpreter):
         self._handle = task_handle
         self._interpreter = interpreter

src/handwritten/task/_task.py

@@ -55,6 +55,10 @@ class Task:
     """
     Represents a DAQmx Task.
     """
+    __slots__ = ('_handle', '_close_on_exit', '_saved_name', '_grpc_options', '_event_handlers', '_interpreter',
+                 '_ai_channels', '_ao_channels', '_ci_channels', '_co_channels', '_di_channels', '_do_channels',
+                 '_export_signals', '_in_stream', '_timing', '_triggers', '_out_stream', '_event_handler_lock',
+                 '__weakref__')
 
     def __init__(self, new_task_name='', *, grpc_options=None):
         """

tests/component/system/test_system.py

@@ -5,6 +5,7 @@
 import nidaqmx
 from nidaqmx.constants import PowerUpChannelType
 from nidaqmx.error_codes import DAQmxErrors
+from nidaqmx.system import System
 from nidaqmx.types import AOPowerUpState
 
 
@@ -121,3 +122,8 @@ def test_invalid_power_up_states___set_analog_power_up_states___throws_invalid_a
             system.set_analog_power_up_states(device_name, power_up_states)
 
     assert exc_info.value.error_code == DAQmxErrors.INVALID_ATTRIBUTE_VALUE
+
+
+def test___system___set_nonexistent_property___raises_exception(system: System):
+    with pytest.raises(AttributeError):
+        system.nonexistent_property = "foo"  # type: ignore[attr-defined]

tests/component/task/test_in_stream.py

@@ -219,3 +219,8 @@ def test___valid_path___start_new_file___returns_assigned_value(ai_task: nidaqmx
     ai_task.in_stream.start_new_file(expected_file_path)
 
     assert ai_task.in_stream.logging_file_path == pathlib.Path(expected_file_path)
+
+
+def test___in_stream___set_nonexistent_property___raises_exception(task: nidaqmx.Task):
+    with pytest.raises(AttributeError):
+        task.in_stream.nonexistent_property = "foo"  # type: ignore[attr-defined]

tests/component/task/test_out_stream.py

@@ -47,3 +47,8 @@ def test___odd_sized_array___write___returns_whole_samples(
     samples_written = task.out_stream.write(data)
 
     assert samples_written == 9
+
+
+def test___out_stream___set_nonexistent_property___raises_exception(task: nidaqmx.Task):
+    with pytest.raises(AttributeError):
+        task.out_stream.nonexistent_property = "foo"  # type: ignore[attr-defined]

tests/component/task/test_timing.py

@@ -156,3 +156,8 @@ def test___timing___cfg_burst_handshaking_export_clock___sets_properties(
         sim_6535_di_single_line_task.export_signals.rdy_for_xfer_event_lvl_active_lvl
         == ready_event_active_level
     )
+
+
+def test___timing___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.timing.nonexistent_property = "foo"  # type: ignore[attr-defined]

tests/component/task/test_triggers_properties.py

@@ -160,3 +160,33 @@ def test___ai_voltage_time_aware_task___reset_timestamp_property___returns_defau
     assert when_value.hour == localized_default_value.hour
     assert when_value.minute == localized_default_value.minute
     assert when_value.second == localized_default_value.second
+
+
+def test___trigger___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.triggers.nonexistent_property = "foo"  # type: ignore[attr-defined]
+
+
+def test___arm_start_trigger___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.triggers.arm_start_trigger.nonexistent_property = "foo"  # type: ignore[attr-defined]
+
+
+def test___handshake_trigger___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.triggers.handshake_trigger.nonexistent_property = "foo"  # type: ignore[attr-defined]
+
+
+def test___pause_trigger___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.triggers.pause_trigger.nonexistent_property = "foo"  # type: ignore[attr-defined]
+
+
+def test___reference_trigger___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.triggers.reference_trigger.nonexistent_property = "foo"  # type: ignore[attr-defined]
+
+
+def test___start_trigger___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.triggers.start_trigger.nonexistent_property = "foo"  # type: ignore[attr-defined]

tests/component/test_export_signals.py

@@ -0,0 +1,8 @@
+import pytest
+
+import nidaqmx
+
+
+def test___export_signals___set_nonexistent_property___raises_exception(task: nidaqmx.Task):
+    with pytest.raises(AttributeError):
+        task.export_signals.nonexistent_property = "foo"  # type: ignore[attr-defined]

tests/component/test_task.py

@@ -1,3 +1,5 @@
+import weakref
+
 import pytest
 
 import nidaqmx
@@ -197,3 +199,9 @@ def test___task___add_global_channels___adds_to_channel_names(task: nidaqmx.Task
     task.add_global_channels([persisted_channel, persisted_channel2])
 
     assert task.channel_names == [persisted_channel.name, persisted_channel2.name]
+
+
+def test___task___create_weakref___succeeds(task: nidaqmx.Task):
+    ref = weakref.ref(task)
+    task2 = ref()
+    assert task is task2

tests/component/test_task_properties.py

@@ -35,3 +35,8 @@ def test___get_devices___shared_interpreter(ai_task: Task):
     devices = ai_task.devices
 
     assert all(dev._interpreter is ai_task._interpreter for dev in devices)
+
+
+def test___task___set_nonexistent_property___raises_exception(task: Task):
+    with pytest.raises(AttributeError):
+        task.nonexistent_property = "foo"  # type: ignore[attr-defined]