Implement custom sensor platform

esphomeyaml/components/sensor/__init__.py

@@ -62,6 +62,7 @@ FILTERS_SCHEMA = vol.All(cv.ensure_list, [vol.All({
 # Base
 sensor_ns = esphomelib_ns.namespace('sensor')
 Sensor = sensor_ns.class_('Sensor', Nameable)
+SensorPtr = Sensor.operator('ptr')
 MQTTSensorComponent = sensor_ns.class_('MQTTSensorComponent', mqtt.MQTTComponent)
 
 PollingSensorComponent = sensor_ns.class_('PollingSensorComponent', PollingComponent, Sensor)

esphomeyaml/components/sensor/custom.py

@@ -0,0 +1,34 @@
+import voluptuous as vol
+
+from esphomeyaml.components import sensor
+import esphomeyaml.config_validation as cv
+from esphomeyaml.const import CONF_ID, CONF_LAMBDA, CONF_SENSORS
+from esphomeyaml.helpers import process_lambda, std_vector, variable
+
+CustomSensorConstructor = sensor.sensor_ns.class_('CustomSensorConstructor')
+
+PLATFORM_SCHEMA = sensor.PLATFORM_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_variable_id(CustomSensorConstructor),
+    vol.Required(CONF_LAMBDA): cv.lambda_,
+    vol.Required(CONF_SENSORS): vol.All(cv.ensure_list, [sensor.SENSOR_SCHEMA.extend({
+        cv.GenerateID(): cv.declare_variable_id(sensor.Sensor),
+    })]),
+})
+
+
+def to_code(config):
+    for template_ in process_lambda(config[CONF_LAMBDA], [],
+                                    return_type=std_vector.template(sensor.SensorPtr)):
+        yield
+
+    rhs = CustomSensorConstructor(template_)
+    custom = variable(config[CONF_ID], rhs)
+    for i, sens in enumerate(config[CONF_SENSORS]):
+        sensor.register_sensor(custom.get_sensor(i), sens)
+
+
+BUILD_FLAGS = '-DUSE_CUSTOM_SENSOR'
+
+
+def to_hass_config(data, config):
+    return [sensor.core_to_hass_config(data, sens) for sens in config[CONF_SENSORS]]