Rich Lane | bdd8e29 | 2013-12-06 17:37:39 -0800 | [diff] [blame] | 1 | # 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 | """ |
| 29 | Code generation |
| 30 | |
| 31 | These functions extract data from the IR and render templates with it. |
| 32 | """ |
| 33 | |
| 34 | from collections import namedtuple |
| 35 | from itertools import groupby |
| 36 | import template_utils |
| 37 | import loxi_globals |
| 38 | import loxi_ir.ir as ir |
| 39 | import util |
Rich Lane | ce2e464 | 2013-12-15 12:05:45 -0800 | [diff] [blame] | 40 | import c_code_gen |
Rich Lane | 8c4c23f | 2013-12-15 13:22:13 -0800 | [diff] [blame] | 41 | import c_gen.of_g_legacy as of_g |
Rich Lane | cce961d | 2013-12-15 14:20:42 -0800 | [diff] [blame] | 42 | import c_gen.type_maps as type_maps |
Rich Lane | bdd8e29 | 2013-12-06 17:37:39 -0800 | [diff] [blame] | 43 | |
| 44 | PushWireTypesFn = namedtuple('PushWireTypesFn', |
| 45 | ['class_name', 'versioned_type_members']) |
| 46 | PushWireTypesMember = namedtuple('PushWireTypesMember', |
| 47 | ['name', 'offset', 'length', 'value']) |
| 48 | |
| 49 | def gen_push_wire_types(install_dir): |
| 50 | fns = [] |
| 51 | for uclass in loxi_globals.unified.classes: |
| 52 | if uclass.virtual or not uclass.has_type_members: |
| 53 | continue |
| 54 | |
| 55 | # Generate a dict of version -> list of PushWireTypesMember |
| 56 | type_members_by_version = {} |
| 57 | for version, ofclass in sorted(uclass.version_classes.items()): |
| 58 | pwtms = [] |
| 59 | for m in ofclass.members: |
| 60 | if isinstance(m, ir.OFTypeMember): |
| 61 | if m.name == "version" and m.value == version.wire_version: |
| 62 | # Special case for version |
| 63 | pwtms.append(PushWireTypesMember(m.name, m.offset, m.length, "obj->version")) |
| 64 | else: |
| 65 | pwtms.append(PushWireTypesMember(m.name, m.offset, m.length, m.value)) |
| 66 | type_members_by_version[version] = pwtms |
| 67 | |
| 68 | # Merge versions with identical type members |
| 69 | all_versions = sorted(type_members_by_version.keys()) |
| 70 | versioned_type_members = [] |
| 71 | for pwtms, versions in groupby(all_versions, type_members_by_version.get): |
| 72 | versioned_type_members.append((pwtms, list(versions))) |
| 73 | |
| 74 | fns.append(PushWireTypesFn( |
| 75 | class_name=uclass.name, |
| 76 | versioned_type_members=versioned_type_members)) |
| 77 | |
| 78 | with template_utils.open_output(install_dir, "loci/src/loci_push_wire_types.c") as out: |
| 79 | util.render_template(out, "loci_push_wire_types.c", fns=fns) |
| 80 | |
| 81 | with template_utils.open_output(install_dir, "loci/src/loci_push_wire_types.h") as out: |
| 82 | util.render_template(out, "loci_push_wire_types.h", fns=fns) |
Rich Lane | ce2e464 | 2013-12-15 12:05:45 -0800 | [diff] [blame] | 83 | |
| 84 | def generate_classes(install_dir): |
| 85 | for uclass in loxi_globals.unified.classes: |
| 86 | with template_utils.open_output(install_dir, "loci/src/%s.c" % uclass.name) as out: |
| 87 | util.render_template(out, "class.c") |
| 88 | # Append legacy generated code |
Rich Lane | b604e33 | 2013-12-15 13:23:51 -0800 | [diff] [blame] | 89 | c_code_gen.gen_new_function_definitions(out, uclass.name) |
Rich Lane | ce2e464 | 2013-12-15 12:05:45 -0800 | [diff] [blame] | 90 | c_code_gen.gen_accessor_definitions(out, uclass.name) |
Rich Lane | 8c4c23f | 2013-12-15 13:22:13 -0800 | [diff] [blame] | 91 | |
Rich Lane | 573d2b2 | 2013-12-15 13:31:27 -0800 | [diff] [blame] | 92 | # TODO remove header classes and use the corresponding class instead |
| 93 | def generate_header_classes(install_dir): |
| 94 | for cls in of_g.standard_class_order: |
| 95 | if cls.find("_header") < 0: |
| 96 | continue |
| 97 | with template_utils.open_output(install_dir, "loci/src/%s.c" % cls) as out: |
| 98 | util.render_template(out, "class.c") |
| 99 | # Append legacy generated code |
| 100 | c_code_gen.gen_new_function_definitions(out, cls) |
| 101 | c_code_gen.gen_accessor_definitions(out, cls) |
| 102 | |
Rich Lane | 8c4c23f | 2013-12-15 13:22:13 -0800 | [diff] [blame] | 103 | def generate_lists(install_dir): |
| 104 | for cls in of_g.ordered_list_objects: |
| 105 | with template_utils.open_output(install_dir, "loci/src/%s.c" % cls) as out: |
| 106 | util.render_template(out, "class.c") |
| 107 | # Append legacy generated code |
Rich Lane | b604e33 | 2013-12-15 13:23:51 -0800 | [diff] [blame] | 108 | c_code_gen.gen_new_function_definitions(out, cls) |
Rich Lane | 8c4c23f | 2013-12-15 13:22:13 -0800 | [diff] [blame] | 109 | c_code_gen.gen_list_accessors(out, cls) |
Rich Lane | 8a82273 | 2013-12-15 14:06:32 -0800 | [diff] [blame] | 110 | |
| 111 | def generate_strings(install_dir): |
| 112 | object_id_strs = [] |
| 113 | object_id_strs.append("of_object") |
| 114 | object_id_strs.extend(of_g.ordered_messages) |
| 115 | object_id_strs.extend(of_g.ordered_non_messages) |
| 116 | object_id_strs.extend(of_g.ordered_list_objects) |
| 117 | object_id_strs.extend(of_g.ordered_pseudo_objects) |
| 118 | object_id_strs.append("of_unknown_object") |
| 119 | |
| 120 | with template_utils.open_output(install_dir, "loci/src/loci_strings.c") as out: |
| 121 | util.render_template(out, "loci_strings.c", object_id_strs=object_id_strs) |
Rich Lane | cce961d | 2013-12-15 14:20:42 -0800 | [diff] [blame] | 122 | |
| 123 | def generate_init_map(install_dir): |
| 124 | with template_utils.open_output(install_dir, "loci/src/loci_init_map.c") as out: |
| 125 | util.render_template(out, "loci_init_map.c", classes=of_g.standard_class_order) |