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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 Lane193317b2013-05-01 12:09:42 -070031:: field_length_members = {}
Rich Lane8ca3b772013-04-30 13:36:55 -070032:: for m in ofclass.members:
Rich Lane002e70c2013-05-09 17:08:16 -070033:: if type(m) == OFPadMember:
Rich Lane57026dc2013-05-01 10:13:16 -070034 reader.skip(${m.length})
Rich Lane002e70c2013-05-09 17:08:16 -070035:: elif type(m) == OFLengthMember:
Andreas Wundsam69ecfdc2013-09-17 13:50:12 -070036 _${m.name} = ${gen_unpack_expr(m.oftype, 'reader', version=version)}
Rich Lanea1601862013-12-01 14:54:58 -080037 orig_reader = reader
38 reader = orig_reader.slice(_${m.name} - (${m.offset} + ${m.length}))
Rich Lane002e70c2013-05-09 17:08:16 -070039:: elif type(m) == OFFieldLengthMember:
Rich Lane193317b2013-05-01 12:09:42 -070040:: field_length_members[m.field_name] = m
Andreas Wundsam69ecfdc2013-09-17 13:50:12 -070041 _${m.name} = ${gen_unpack_expr(m.oftype, 'reader', version=version)}
Rich Lane002e70c2013-05-09 17:08:16 -070042:: elif type(m) == OFTypeMember:
Andreas Wundsam69ecfdc2013-09-17 13:50:12 -070043 _${m.name} = ${gen_unpack_expr(m.oftype, 'reader', version=version)}
Rich Lane57026dc2013-05-01 10:13:16 -070044 assert(_${m.name} == ${m.value})
Rich Lane038c9e62014-01-27 15:33:18 -080045:: elif type(m) == OFDataMember or type(m) == OFDiscriminatorMember:
Rich Lane193317b2013-05-01 12:09:42 -070046:: if m.name in field_length_members:
47:: reader_expr = 'reader.slice(_%s)' % field_length_members[m.name].name
48:: else:
49:: reader_expr = 'reader'
50:: #endif
Andreas Wundsam69ecfdc2013-09-17 13:50:12 -070051 obj.${m.name} = ${gen_unpack_expr(m.oftype, reader_expr, version=version)}
Rich Lanea06d0c32013-03-25 08:52:03 -070052:: #endif
53:: #endfor
Rich Lane25e73f02013-12-02 14:44:32 -080054:: if ofclass.has_external_alignment:
Rich Lanea1601862013-12-01 14:54:58 -080055 orig_reader.skip_align()
Rich Lane22160802013-05-01 14:04:23 -070056:: #endif