blob: 7f3ce2a9aeaaf644aab47f33c73f9a31949162b1 [file] [log] [blame]
:: # 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.
::
:: # TODO coalesce format strings
:: from py_gen.codegen import Member, LengthMember, FieldLengthMember, TypeMember, PadMember
if type(buf) == loxi.generic_util.OFReader:
reader = buf
else:
reader = loxi.generic_util.OFReader(buf)
:: field_length_members = {}
:: for m in ofclass.members:
:: if type(m) == PadMember:
reader.skip(${m.length})
:: elif type(m) == LengthMember:
_${m.name} = ${m.oftype.gen_unpack_expr('reader')}
:: elif type(m) == FieldLengthMember:
:: field_length_members[m.field_name] = m
_${m.name} = ${m.oftype.gen_unpack_expr('reader')}
:: elif type(m) == TypeMember:
_${m.name} = ${m.oftype.gen_unpack_expr('reader')}
assert(_${m.name} == ${m.value})
:: elif type(m) == Member:
:: if m.name in field_length_members:
:: reader_expr = 'reader.slice(_%s)' % field_length_members[m.name].name
:: else:
:: reader_expr = 'reader'
:: #endif
obj.${m.name} = ${m.oftype.gen_unpack_expr(reader_expr)}
:: #endif
:: #endfor
:: if ofclass.name == 'of_match_v3':
reader.skip((_length + 7)/8*8 - _length)
:: #endif