blob: 7f3ce2a9aeaaf644aab47f33c73f9a31949162b1 [file] [log] [blame]
Rich Lanea06d0c32013-03-25 08:52:03 -07001:: # Copyright 2013, Big Switch Networks, Inc.
2:: #
3:: # LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with
4:: # the following special exception:
5:: #
6:: # LOXI Exception
7:: #
8:: # As a special exception to the terms of the EPL, you may distribute libraries
9:: # generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided
10:: # that copyright and licensing notices generated by LoxiGen are not altered or removed
11:: # from the LoxiGen Libraries and the notice provided below is (i) included in
12:: # the LoxiGen Libraries, if distributed in source code form and (ii) included in any
13:: # documentation for the LoxiGen Libraries, if distributed in binary form.
14:: #
15:: # Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler."
16:: #
17:: # You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain
18:: # a copy of the EPL at:
19:: #
20:: # http://www.eclipse.org/legal/epl-v10.html
21:: #
22:: # Unless required by applicable law or agreed to in writing, software
23:: # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
24:: # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
25:: # EPL for the specific language governing permissions and limitations
26:: # under the EPL.
27::
28:: # TODO coalesce format strings
Rich Lane193317b2013-05-01 12:09:42 -070029:: from py_gen.codegen import Member, LengthMember, FieldLengthMember, TypeMember, PadMember
Rich Lane57026dc2013-05-01 10:13:16 -070030 if type(buf) == loxi.generic_util.OFReader:
31 reader = buf
32 else:
33 reader = loxi.generic_util.OFReader(buf)
Rich Lane193317b2013-05-01 12:09:42 -070034:: field_length_members = {}
Rich Lane8ca3b772013-04-30 13:36:55 -070035:: for m in ofclass.members:
Rich Lanec2685792013-04-30 14:08:33 -070036:: if type(m) == PadMember:
Rich Lane57026dc2013-05-01 10:13:16 -070037 reader.skip(${m.length})
Rich Lane193317b2013-05-01 12:09:42 -070038:: elif type(m) == LengthMember:
39 _${m.name} = ${m.oftype.gen_unpack_expr('reader')}
40:: elif type(m) == FieldLengthMember:
41:: field_length_members[m.field_name] = m
42 _${m.name} = ${m.oftype.gen_unpack_expr('reader')}
Rich Lane8ca3b772013-04-30 13:36:55 -070043:: elif type(m) == TypeMember:
Rich Lane193317b2013-05-01 12:09:42 -070044 _${m.name} = ${m.oftype.gen_unpack_expr('reader')}
Rich Lane57026dc2013-05-01 10:13:16 -070045 assert(_${m.name} == ${m.value})
Rich Lane193317b2013-05-01 12:09:42 -070046:: elif type(m) == Member:
47:: if m.name in field_length_members:
48:: reader_expr = 'reader.slice(_%s)' % field_length_members[m.name].name
49:: else:
50:: reader_expr = 'reader'
51:: #endif
52 obj.${m.name} = ${m.oftype.gen_unpack_expr(reader_expr)}
Rich Lanea06d0c32013-03-25 08:52:03 -070053:: #endif
54:: #endfor
Rich Lane22160802013-05-01 14:04:23 -070055:: if ofclass.name == 'of_match_v3':
56 reader.skip((_length + 7)/8*8 - _length)
57:: #endif