| # Copyright 2013, Big Switch Networks, Inc. |
| # |
| # LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with |
| # the following special exception: |
| # |
| # LOXI Exception |
| # |
| # As a special exception to the terms of the EPL, you may distribute libraries |
| # generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided |
| # that copyright and licensing notices generated by LoxiGen are not altered or removed |
| # from the LoxiGen Libraries and the notice provided below is (i) included in |
| # the LoxiGen Libraries, if distributed in source code form and (ii) included in any |
| # documentation for the LoxiGen Libraries, if distributed in binary form. |
| # |
| # Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler." |
| # |
| # You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain |
| # a copy of the EPL at: |
| # |
| # http://www.eclipse.org/legal/epl-v10.html |
| # |
| # 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 |
| # EPL for the specific language governing permissions and limitations |
| # under the EPL. |
| |
| from collections import namedtuple |
| import loxi_globals |
| import struct |
| import template_utils |
| import loxi_utils.loxi_utils as utils |
| import util |
| import oftype |
| from loxi_ir import * |
| |
| ofclasses_by_version = {} |
| |
| # Return the name for the generated Python class |
| def generate_pyname(cls): |
| if utils.class_is_action(cls): |
| return cls[10:] |
| elif utils.class_is_oxm(cls): |
| return cls[7:] |
| elif utils.class_is_meter_band(cls): |
| return cls[14:] |
| elif utils.class_is_instruction(cls): |
| return cls[15:] |
| else: |
| return cls[3:] |
| |
| # Create intermediate representation, extended from the LOXI IR |
| def build_ofclasses(version): |
| ofclasses = [] |
| for ofclass in loxi_globals.ir[version].classes: |
| if ofclass.virtual: |
| continue |
| |
| ofclass.pyname = generate_pyname(ofclass.name) |
| ofclasses.append(ofclass) |
| |
| return ofclasses |
| |
| def generate_init(out, name, version): |
| util.render_template(out, 'init.py', version=version) |
| |
| def generate_action(out, name, version): |
| ofclasses = [x for x in ofclasses_by_version[version] |
| if utils.class_is_action(x.name)] |
| util.render_template(out, 'action.py', ofclasses=ofclasses, version=version) |
| |
| def generate_oxm(out, name, version): |
| ofclasses = [x for x in ofclasses_by_version[version] |
| if utils.class_is_oxm(x.name)] |
| util.render_template(out, 'oxm.py', ofclasses=ofclasses, version=version) |
| |
| def generate_common(out, name, version): |
| ofclasses = [x for x in ofclasses_by_version[version] |
| if not utils.class_is_message(x.name) |
| and not utils.class_is_action(x.name) |
| and not utils.class_is_instruction(x.name) |
| and not utils.class_is_meter_band(x.name) |
| and not utils.class_is_oxm(x.name) |
| and not utils.class_is_list(x.name)] |
| util.render_template(out, 'common.py', ofclasses=ofclasses, version=version) |
| |
| def generate_const(out, name, version): |
| util.render_template(out, 'const.py', version=version, |
| enums=loxi_globals.ir[version].enums) |
| |
| def generate_instruction(out, name, version): |
| ofclasses = [x for x in ofclasses_by_version[version] |
| if utils.class_is_instruction(x.name)] |
| util.render_template(out, 'instruction.py', ofclasses=ofclasses, version=version) |
| |
| def generate_message(out, name, version): |
| ofclasses = [x for x in ofclasses_by_version[version] |
| if utils.class_is_message(x.name)] |
| util.render_template(out, 'message.py', ofclasses=ofclasses, version=version) |
| |
| def generate_meter_band(out, name, version): |
| ofclasses = [x for x in ofclasses_by_version[version] |
| if utils.class_is_meter_band(x.name)] |
| util.render_template(out, 'meter_band.py', ofclasses=ofclasses, version=version) |
| |
| def generate_pp(out, name, version): |
| util.render_template(out, 'pp.py') |
| |
| def generate_util(out, name, version): |
| util.render_template(out, 'util.py', version=version) |
| |
| def init(): |
| for version in loxi_globals.OFVersions.target_versions: |
| ofclasses_by_version[version] = build_ofclasses(version) |