| #!/usr/bin/env python3.4 |
| # |
| # Copyright (C) 2017 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| # This script generates useful Java representations for the OBD2 sensors |
| # defined in Vehicle HAL. It is meant to be as an easy way to update the |
| # list of diagnostic sensors and get all downstream users of that information |
| # updated in a consistent fashion. |
| |
| import sys |
| sys.dont_write_bytecode = True |
| |
| import hidl_parser.parser |
| |
| class SensorList(object): |
| """A list of sensors ordered by a unique identifier.""" |
| def __init__(self, descriptor): |
| self.sensors = [] |
| self.id = -1 |
| self.descriptor = descriptor |
| |
| def addSensor(self, sensor): |
| """Add a new sensor to the list.""" |
| if not hasattr(sensor, 'id'): |
| self.id += 1 |
| sensor.id = self.id |
| self.sensors.append(sensor) |
| |
| def finalizeList(self): |
| """Complete the list, adding well-known sensor information.""" |
| self.id -= 1 |
| vendorStartSensor = self.sensorClass("VENDOR_START_INDEX", |
| id="LAST_SYSTEM_INDEX + 1") |
| # make calling finalizeList idempotent |
| self.finalizeList = lambda: self |
| return self |
| |
| def __getitem__(self, key): |
| return self.sensors.__getitem__(key) |
| |
| class SensorPolicy(object): |
| """A formatter object that does processing on sensor data.""" |
| @classmethod |
| def indentLines(cls, string, numSpaces): |
| indent = ' ' * numSpaces |
| parts = string.split('\n') |
| parts = [indent + part for part in parts] |
| return '\n'.join(parts) + "\n" |
| |
| def sensor(self, theSensor, theSensors): |
| """Produce output for a sensor.""" |
| pass |
| |
| def prefix(self, theSensors): |
| """Prefix string before any sensor data is generated.""" |
| return "" |
| |
| def suffix(self, theSensors): |
| """Suffix string after all sensor data is generated.""" |
| return "" |
| |
| def indent(self): |
| """Indentation level for individual sensor data.""" |
| return 0 |
| |
| def separator(self): |
| """Separator between individual sensor data entries.""" |
| return "" |
| |
| def description(self): |
| """A description of this policy.""" |
| return "A sensor policy." |
| |
| def sensors(self, theSensors): |
| """Produce output for all sensors.""" |
| theSensors = theSensors.finalizeList() |
| s = self.prefix(theSensors) + "\n" |
| first = True |
| for theSensor in theSensors: |
| if first: |
| first = False |
| else: |
| s += self.separator() |
| sensorLine = SensorPolicy.indentLines(self.sensor(theSensor, |
| theSensors), self.indent()) |
| s += sensorLine |
| s += self.suffix(theSensors) + "\n" |
| return s |
| |
| class JavaSensorPolicy(SensorPolicy): |
| """The sensor policy that emits Java sensor descriptions.""" |
| def sensor(self, theSensor, theSensors): |
| sensorName = theSensor.name.replace("_INDEX", "") |
| sensorId = str(theSensor.id).replace("_INDEX", "") |
| return "public static final int " + sensorName + " = " + \ |
| str(sensorId) + ";" |
| |
| def prefix(self, theSensors): |
| s = " public static final class Obd2%sSensorIndex {\n" % \ |
| theSensors.descriptor |
| s += " private Obd2%sSensorIndex() {}\n" % \ |
| theSensors.descriptor |
| return s |
| |
| def suffix(self, theSensors): |
| return " }" |
| |
| def indent(self): |
| return 8 |
| |
| class PythonSensorPolicy(SensorPolicy): |
| """The sensor policy that emits Python sensor descriptions.""" |
| def sensor(self, theSensor, theSensors): |
| return "OBD2_SENSOR_%s_%s = %s" % ( |
| theSensors.descriptor.upper(), |
| theSensor.name.upper(), |
| self.adjustSensorId(theSensors.descriptor.upper(), str(theSensor.id)) |
| ) |
| |
| def adjustSensorId(self, descriptor, sensorId): |
| if sensorId.isdigit(): return sensorId |
| return "OBD2_SENSOR_%s_%s" % (descriptor, sensorId.upper()) |
| |
| class IntDefSensorPolicy(SensorPolicy): |
| """The sensor policy that emits @IntDef sensor descriptions.""" |
| def sensor(self, theSensor, theSensors): |
| sensorName = theSensor.name.replace("_INDEX", "") |
| return "Obd2%sSensorIndex.%s," % (theSensors.descriptor,sensorName) |
| |
| def prefix(self, theSensors): |
| return " @Retention(RetentionPolicy.SOURCE)\n @IntDef({" |
| |
| def indent(self): |
| return 8 |
| |
| def suffix(self, theSensors): |
| return " })\n public @interface %sSensorIndex {}" % \ |
| theSensors.descriptor |
| |
| class SensorMeta(type): |
| """Metaclass for sensor classes.""" |
| def __new__(cls, name, parents, dct): |
| sensorList = dct['sensorList'] |
| class SensorBase(object): |
| def __init__(self, name, comment=None, id=None): |
| self.name = name |
| self.comment = comment if comment else "" |
| if id: self.id = id |
| sensorList.addSensor(self) |
| def __repr__(self): |
| s = "" |
| if self.comment: |
| s = s + self.comment + "\n" |
| s = s + self.name + " = " + str(self.id) |
| return s |
| |
| newClass = super().__new__(cls, name, (SensorBase,), dct) |
| sensorList.sensorClass = newClass |
| return newClass |
| |
| intSensors = SensorList(descriptor="Integer") |
| floatSensors = SensorList(descriptor="Float") |
| |
| class intSensor(metaclass=SensorMeta): |
| sensorList = intSensors |
| |
| class floatSensor(metaclass=SensorMeta): |
| sensorList = floatSensors |
| |
| def applyPolicy(policy, destfile): |
| """Given a sensor policy, apply it to all known sensor types""" |
| print(policy.sensors(intSensors), file=destfile) |
| print(policy.sensors(floatSensors), file=destfile) |
| |
| def java(destfile): |
| applyPolicy(JavaSensorPolicy(), destfile) |
| |
| def intdef(destfile): |
| applyPolicy(IntDefSensorPolicy(), destfile) |
| |
| def python(destfile): |
| applyPolicy(PythonSensorPolicy(), destfile) |
| |
| def generateJava(filepath): |
| """Generate Java code for all sensors.""" |
| destfile = open(filepath, "w") |
| print("/*", file=destfile) |
| print(" * Copyright (C) 2017 The Android Open Source Project", file=destfile) |
| print(" *", file=destfile) |
| print(" * Licensed under the Apache License, Version 2.0 (the \"License\");", file=destfile) |
| print(" * you may not use this file except in compliance with the License.", file=destfile) |
| print(" * You may obtain a copy of the License at", file=destfile) |
| print(" *", file=destfile) |
| print(" * http://www.apache.org/licenses/LICENSE-2.0", file=destfile) |
| print(" *", file=destfile) |
| print(" * Unless required by applicable law or agreed to in writing, software", file=destfile) |
| print(" * distributed under the License is distributed on an \"AS IS\" BASIS,", file=destfile) |
| print(" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.", file=destfile) |
| print(" * See the License for the specific language governing permissions and", file=destfile) |
| print(" * limitations under the License.", file=destfile) |
| print("*/", file=destfile) |
| print("", file=destfile) |
| print("package android.car.hardware;", file=destfile) |
| print("", file=destfile) |
| print("import android.annotation.IntDef;", file=destfile) |
| print("import java.lang.annotation.Retention;", file=destfile) |
| print("import java.lang.annotation.RetentionPolicy;", file=destfile) |
| print("", file=destfile) |
| print("/**", file=destfile) |
| print(" * This class is a container for the indices of integer and float diagnostic sensors.", file=destfile) |
| print(" * These values are extracted from types.hal by packages/services/Car/tools/update-obd2-sensors.py", file=destfile) |
| print(" *", file=destfile) |
| print(" * DO NOT EDIT MANUALLY", file=destfile) |
| print(" *", file=destfile) |
| print(" * @hide", file=destfile) |
| print(" */", file=destfile) |
| print("public final class CarDiagnosticSensorIndices {", file=destfile) |
| java(destfile) |
| intdef(destfile) |
| print("}", file=destfile) |
| |
| def generatePython(filepath): |
| """Generate Python code for all sensors.""" |
| destfile = open(filepath, "w") |
| print("#!/usr/bin/env python3", file=destfile) |
| print("#", file=destfile) |
| print("# Copyright (C) 2017 The Android Open Source Project", file=destfile) |
| print("#", file=destfile) |
| print("# Licensed under the Apache License, Version 2.0 (the \"License\");", file=destfile) |
| print("# you may not use this file except in compliance with the License.", file=destfile) |
| print("# You may obtain a copy of the License at", file=destfile) |
| print("#", file=destfile) |
| print("# http://www.apache.org/licenses/LICENSE-2.0", file=destfile) |
| print("#", file=destfile) |
| print("# Unless required by applicable law or agreed to in writing, software", file=destfile) |
| print("# distributed under the License is distributed on an \"AS IS\" BASIS,", file=destfile) |
| print("# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.", file=destfile) |
| print("# See the License for the specific language governing permissions and", file=destfile) |
| print("# limitations under the License.", file=destfile) |
| print("#", file=destfile) |
| print("# This file is generated by types.hal by packages/services/Car/tools/update-obd2-sensors.py", file=destfile) |
| print("# DO NOT EDIT MANUALLY", file=destfile) |
| python(destfile) |
| |
| def load(filepath): |
| """Load sensor data from Vehicle HAL.""" |
| ast = hidl_parser.parser.parse(filepath) |
| integerSensors = ast['enums']['Obd2IntegerSensorIndex'] |
| floatSensors = ast['enums']['Obd2FloatSensorIndex'] |
| for case in integerSensors.cases: |
| intSensor(name=case.name, id=case.value) |
| for case in floatSensors.cases: |
| floatSensor(name=case.name, id=case.value) |
| |
| import os |
| |
| if len(sys.argv) != 4: |
| print('syntax: update-obd2-sensors.py <path/to/types.hal> <path/to/CarDiagnosticSensorIndices.java> <path/to/diagnostic_sensors.py>') |
| print('This script will parse types.hal, and use the resulting', end='') |
| print('parse tree to generate CarDiagnosticSensorIndices.java.') |
| sys.exit(1) |
| load(sys.argv[1]) |
| generateJava(sys.argv[2]) |
| generatePython(sys.argv[3]) |