blob: 09a0e08e4ad3f6a1ab2c6aa3568f2c79c77a7610 [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 Lane002e70c2013-05-09 17:08:16 -070029:: from loxi_ir import *
Rich Laneda11f8b2013-06-19 15:53:25 -070030:: from py_gen.oftype import gen_unpack_expr
Rich Lane57026dc2013-05-01 10:13:16 -070031 if type(buf) == loxi.generic_util.OFReader:
32 reader = buf
33 else:
34 reader = loxi.generic_util.OFReader(buf)
Rich Lane193317b2013-05-01 12:09:42 -070035:: field_length_members = {}
Rich Lane8ca3b772013-04-30 13:36:55 -070036:: for m in ofclass.members:
Rich Lane002e70c2013-05-09 17:08:16 -070037:: if type(m) == OFPadMember:
Rich Lane57026dc2013-05-01 10:13:16 -070038 reader.skip(${m.length})
Rich Lane002e70c2013-05-09 17:08:16 -070039:: elif type(m) == OFLengthMember:
Rich Laneda11f8b2013-06-19 15:53:25 -070040 _${m.name} = ${gen_unpack_expr(m.oftype, 'reader')}
Rich Lane002e70c2013-05-09 17:08:16 -070041:: elif type(m) == OFFieldLengthMember:
Rich Lane193317b2013-05-01 12:09:42 -070042:: field_length_members[m.field_name] = m
Rich Laneda11f8b2013-06-19 15:53:25 -070043 _${m.name} = ${gen_unpack_expr(m.oftype, 'reader')}
Rich Lane002e70c2013-05-09 17:08:16 -070044:: elif type(m) == OFTypeMember:
Rich Laneda11f8b2013-06-19 15:53:25 -070045 _${m.name} = ${gen_unpack_expr(m.oftype, 'reader')}
Rich Lane57026dc2013-05-01 10:13:16 -070046 assert(_${m.name} == ${m.value})
Rich Lane002e70c2013-05-09 17:08:16 -070047:: elif type(m) == OFDataMember:
Rich Lane193317b2013-05-01 12:09:42 -070048:: if m.name in field_length_members:
49:: reader_expr = 'reader.slice(_%s)' % field_length_members[m.name].name
50:: else:
51:: reader_expr = 'reader'
52:: #endif
Rich Laneda11f8b2013-06-19 15:53:25 -070053 obj.${m.name} = ${gen_unpack_expr(m.oftype, reader_expr)}
Rich Lanea06d0c32013-03-25 08:52:03 -070054:: #endif
55:: #endfor
Rich Laneb564efc2013-07-23 14:19:29 -070056:: if ofclass.has_external_alignment or ofclass.has_internal_alignment:
57 reader.skip_align()
Rich Lane22160802013-05-01 14:04:23 -070058:: #endif