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Wenchao Xia21cd70d2014-06-18 08:43:28 +02001#
2# QAPI event generator
3#
4# Copyright (c) 2014 Wenchao Xia
Eric Blakea16e3e52016-01-29 06:48:46 -07005# Copyright (c) 2015-2016 Red Hat Inc.
Wenchao Xia21cd70d2014-06-18 08:43:28 +02006#
7# Authors:
8# Wenchao Xia <wenchaoqemu@gmail.com>
Markus Armbruster05f43a92015-09-16 13:06:14 +02009# Markus Armbruster <armbru@redhat.com>
Wenchao Xia21cd70d2014-06-18 08:43:28 +020010#
11# This work is licensed under the terms of the GNU GPL, version 2.
12# See the COPYING file in the top-level directory.
13
Wenchao Xia21cd70d2014-06-18 08:43:28 +020014from qapi import *
Wenchao Xia21cd70d2014-06-18 08:43:28 +020015
Markus Armbrustere98859a2015-09-16 13:06:16 +020016
17def gen_event_send_proto(name, arg_type):
Markus Armbruster03b43672015-09-16 13:06:20 +020018 return 'void qapi_event_send_%(c_name)s(%(param)s)' % {
19 'c_name': c_name(name.lower()),
20 'param': gen_params(arg_type, 'Error **errp')}
Wenchao Xia21cd70d2014-06-18 08:43:28 +020021
22
Markus Armbrustere98859a2015-09-16 13:06:16 +020023def gen_event_send_decl(name, arg_type):
Wenchao Xia21cd70d2014-06-18 08:43:28 +020024 return mcgen('''
25
Markus Armbrustere98859a2015-09-16 13:06:16 +020026%(proto)s;
Wenchao Xia21cd70d2014-06-18 08:43:28 +020027''',
Markus Armbrustere98859a2015-09-16 13:06:16 +020028 proto=gen_event_send_proto(name, arg_type))
Wenchao Xia21cd70d2014-06-18 08:43:28 +020029
Wenchao Xia21cd70d2014-06-18 08:43:28 +020030
Markus Armbrustere98859a2015-09-16 13:06:16 +020031def gen_event_send(name, arg_type):
32 ret = mcgen('''
33
34%(proto)s
Wenchao Xia21cd70d2014-06-18 08:43:28 +020035{
36 QDict *qmp;
Eric Blake2a0f50e2015-09-29 16:21:08 -060037 Error *err = NULL;
Wenchao Xia21cd70d2014-06-18 08:43:28 +020038 QMPEventFuncEmit emit;
Markus Armbrustere98859a2015-09-16 13:06:16 +020039''',
40 proto=gen_event_send_proto(name, arg_type))
Wenchao Xia21cd70d2014-06-18 08:43:28 +020041
Markus Armbrustere98859a2015-09-16 13:06:16 +020042 if arg_type and arg_type.members:
43 ret += mcgen('''
Wenchao Xia21cd70d2014-06-18 08:43:28 +020044 QmpOutputVisitor *qov;
45 Visitor *v;
Wenchao Xia21cd70d2014-06-18 08:43:28 +020046
Markus Armbrustere98859a2015-09-16 13:06:16 +020047''')
Wenchao Xia21cd70d2014-06-18 08:43:28 +020048
Markus Armbrustere98859a2015-09-16 13:06:16 +020049 ret += mcgen('''
Wenchao Xia21cd70d2014-06-18 08:43:28 +020050 emit = qmp_event_get_func_emit();
51 if (!emit) {
52 return;
53 }
54
Markus Armbrustere98859a2015-09-16 13:06:16 +020055 qmp = qmp_event_build_dict("%(name)s");
Wenchao Xia21cd70d2014-06-18 08:43:28 +020056
Markus Armbrustere98859a2015-09-16 13:06:16 +020057''',
58 name=name)
Wenchao Xia21cd70d2014-06-18 08:43:28 +020059
Markus Armbrustere98859a2015-09-16 13:06:16 +020060 if arg_type and arg_type.members:
Eric Blake29f6bd12016-03-17 16:48:26 -060061 assert not arg_type.variants
Markus Armbrustere98859a2015-09-16 13:06:16 +020062 ret += mcgen('''
Wenchao Xia21cd70d2014-06-18 08:43:28 +020063 qov = qmp_output_visitor_new();
Wenchao Xia21cd70d2014-06-18 08:43:28 +020064 v = qmp_output_get_visitor(qov);
Wenchao Xia21cd70d2014-06-18 08:43:28 +020065
Eric Blake337283d2016-01-29 06:48:57 -070066 visit_start_struct(v, "%(name)s", NULL, 0, &err);
Markus Armbrustere98859a2015-09-16 13:06:16 +020067''',
68 name=name)
Eric Blake1f353342015-09-29 16:21:13 -060069 ret += gen_err_check()
Eric Blake14f00c62016-03-03 09:16:43 -070070 ret += gen_visit_members(arg_type.members, need_cast=True,
71 label='out_obj')
Markus Armbrustere98859a2015-09-16 13:06:16 +020072 ret += mcgen('''
Eric Blakea16e3e52016-01-29 06:48:46 -070073out_obj:
74 visit_end_struct(v, err ? NULL : &err);
Eric Blake2a0f50e2015-09-29 16:21:08 -060075 if (err) {
Eric Blakef7823992015-09-29 16:21:10 -060076 goto out;
Wenchao Xia21cd70d2014-06-18 08:43:28 +020077 }
78
Eric Blake8df59562016-03-17 16:48:31 -060079 qdict_put_obj(qmp, "data", qmp_output_get_qobject(qov));
Markus Armbrustere98859a2015-09-16 13:06:16 +020080''')
Wenchao Xia21cd70d2014-06-18 08:43:28 +020081
Markus Armbrustere98859a2015-09-16 13:06:16 +020082 ret += mcgen('''
Eric Blake2a0f50e2015-09-29 16:21:08 -060083 emit(%(c_enum)s, qmp, &err);
Wenchao Xia21cd70d2014-06-18 08:43:28 +020084
Markus Armbrustere98859a2015-09-16 13:06:16 +020085''',
86 c_enum=c_enum_const(event_enum_name, name))
Wenchao Xia21cd70d2014-06-18 08:43:28 +020087
Markus Armbrustere98859a2015-09-16 13:06:16 +020088 if arg_type and arg_type.members:
89 ret += mcgen('''
Eric Blakef7823992015-09-29 16:21:10 -060090out:
Wenchao Xia21cd70d2014-06-18 08:43:28 +020091 qmp_output_visitor_cleanup(qov);
Markus Armbrustere98859a2015-09-16 13:06:16 +020092''')
93 ret += mcgen('''
Eric Blake2a0f50e2015-09-29 16:21:08 -060094 error_propagate(errp, err);
Wenchao Xia21cd70d2014-06-18 08:43:28 +020095 QDECREF(qmp);
96}
Markus Armbrustere98859a2015-09-16 13:06:16 +020097''')
Wenchao Xia21cd70d2014-06-18 08:43:28 +020098 return ret
99
Markus Armbruster05f43a92015-09-16 13:06:14 +0200100
101class QAPISchemaGenEventVisitor(QAPISchemaVisitor):
102 def __init__(self):
103 self.decl = None
104 self.defn = None
105 self._event_names = None
106
107 def visit_begin(self, schema):
108 self.decl = ''
109 self.defn = ''
110 self._event_names = []
111
112 def visit_end(self):
Markus Armbrustere98859a2015-09-16 13:06:16 +0200113 self.decl += gen_enum(event_enum_name, self._event_names)
114 self.defn += gen_enum_lookup(event_enum_name, self._event_names)
Markus Armbruster05f43a92015-09-16 13:06:14 +0200115 self._event_names = None
116
117 def visit_event(self, name, info, arg_type):
Markus Armbrustere98859a2015-09-16 13:06:16 +0200118 self.decl += gen_event_send_decl(name, arg_type)
119 self.defn += gen_event_send(name, arg_type)
Markus Armbruster05f43a92015-09-16 13:06:14 +0200120 self._event_names.append(name)
121
122
Markus Armbruster2114f5a2015-04-02 13:12:21 +0200123(input_file, output_dir, do_c, do_h, prefix, dummy) = parse_command_line()
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200124
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200125c_comment = '''
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200126/*
127 * schema-defined QAPI event functions
128 *
129 * Copyright (c) 2014 Wenchao Xia
130 *
131 * Authors:
132 * Wenchao Xia <wenchaoqemu@gmail.com>
133 *
134 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
135 * See the COPYING.LIB file in the top-level directory.
136 *
137 */
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200138'''
139h_comment = '''
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200140/*
141 * schema-defined QAPI event functions
142 *
143 * Copyright (c) 2014 Wenchao Xia
144 *
145 * Authors:
146 * Wenchao Xia <wenchaoqemu@gmail.com>
147 *
148 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
149 * See the COPYING.LIB file in the top-level directory.
150 *
151 */
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200152'''
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200153
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200154(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
155 'qapi-event.c', 'qapi-event.h',
156 c_comment, h_comment)
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200157
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200158fdef.write(mcgen('''
Eric Blake9167ebd2016-02-08 08:36:46 -0700159#include "qemu/osdep.h"
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200160#include "qemu-common.h"
161#include "%(prefix)sqapi-event.h"
162#include "%(prefix)sqapi-visit.h"
163#include "qapi/qmp-output-visitor.h"
164#include "qapi/qmp-event.h"
165
166''',
167 prefix=prefix))
168
169fdecl.write(mcgen('''
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200170#include "qapi/error.h"
171#include "qapi/qmp/qdict.h"
172#include "%(prefix)sqapi-types.h"
173
174''',
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200175 prefix=prefix))
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200176
Markus Armbruster016a3352015-07-01 12:59:40 +0200177event_enum_name = c_name(prefix + "QAPIEvent", protect=False)
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200178
Markus Armbruster05f43a92015-09-16 13:06:14 +0200179schema = QAPISchema(input_file)
180gen = QAPISchemaGenEventVisitor()
181schema.visit(gen)
182fdef.write(gen.defn)
183fdecl.write(gen.decl)
Wenchao Xia21cd70d2014-06-18 08:43:28 +0200184
Markus Armbruster12f8e1b2015-04-02 14:46:39 +0200185close_output(fdef, fdecl)