mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-24 01:15:28 +00:00
bc8a7ae5f9
We had some pointless differences in the generated code for visit, command marshalling, and events; unifying them makes it easier for future patches to consolidate to common helper functions. This is one patch of a series to clean up these differences. This patch consistently names the local error variable 'err' rather than 'local_err'. No change in semantics to the generated code. Backports commit 2a0f50e8d973b01eda4c63bac4a5c79ea0f584ef from qemu
241 lines
5.6 KiB
Python
241 lines
5.6 KiB
Python
#
|
|
# QAPI event generator
|
|
#
|
|
# Copyright (c) 2014 Wenchao Xia
|
|
# Copyright (c) 2015 Red Hat Inc.
|
|
#
|
|
# Authors:
|
|
# Wenchao Xia <wenchaoqemu@gmail.com>
|
|
# Markus Armbruster <armbru@redhat.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2.
|
|
# See the COPYING file in the top-level directory.
|
|
|
|
from qapi import *
|
|
|
|
def _generate_event_api_name(event_name, params):
|
|
api_name = "void qapi_event_send_%s(" % c_name(event_name).lower();
|
|
l = len(api_name)
|
|
|
|
if params:
|
|
for m in params.members:
|
|
if m.optional:
|
|
api_name += "bool has_%s,\n" % c_name(m.name)
|
|
api_name += "".ljust(l)
|
|
|
|
api_name += "%s %s,\n" % (m.type.c_type(is_param=True),
|
|
c_name(m.name))
|
|
api_name += "".ljust(l)
|
|
|
|
api_name += "Error **errp)"
|
|
return api_name;
|
|
|
|
|
|
# Following are the core functions that generate C APIs to emit event.
|
|
|
|
def generate_event_declaration(api_name):
|
|
return mcgen('''
|
|
|
|
%(api_name)s;
|
|
''',
|
|
api_name = api_name)
|
|
|
|
def generate_event_implement(api_name, event_name, params):
|
|
# step 1: declare any variables
|
|
ret = mcgen("""
|
|
|
|
%(api_name)s
|
|
{
|
|
QDict *qmp;
|
|
Error *err = NULL;
|
|
QMPEventFuncEmit emit;
|
|
""",
|
|
api_name = api_name)
|
|
|
|
if params and params.members:
|
|
ret += mcgen("""
|
|
QmpOutputVisitor *qov;
|
|
Visitor *v;
|
|
QObject *obj;
|
|
|
|
""")
|
|
|
|
# step 2: check emit function, create a dict
|
|
ret += mcgen("""
|
|
emit = qmp_event_get_func_emit();
|
|
if (!emit) {
|
|
return;
|
|
}
|
|
|
|
qmp = qmp_event_build_dict("%(event_name)s");
|
|
|
|
""",
|
|
event_name = event_name)
|
|
|
|
# step 3: visit the params if params != None
|
|
if params and params.members:
|
|
ret += mcgen("""
|
|
qov = qmp_output_visitor_new();
|
|
g_assert(qov);
|
|
|
|
v = qmp_output_get_visitor(qov);
|
|
g_assert(v);
|
|
|
|
/* Fake visit, as if all members are under a structure */
|
|
visit_start_struct(v, NULL, "", "%(event_name)s", 0, &err);
|
|
if (err) {
|
|
goto clean;
|
|
}
|
|
|
|
""",
|
|
event_name = event_name)
|
|
|
|
for memb in params.members:
|
|
if memb.optional:
|
|
ret += mcgen("""
|
|
if (has_%(var)s) {
|
|
""",
|
|
var=c_name(memb.name))
|
|
push_indent()
|
|
|
|
if memb.type.name == "str":
|
|
var_type = "(char **)"
|
|
else:
|
|
var_type = ""
|
|
|
|
ret += mcgen("""
|
|
visit_type_%(type)s(v, %(var_type)s&%(var)s, "%(name)s", &err);
|
|
if (err) {
|
|
goto clean;
|
|
}
|
|
""",
|
|
var_type = var_type,
|
|
var=c_name(memb.name),
|
|
type=memb.type.c_name(),
|
|
name=memb.name)
|
|
|
|
if memb.optional:
|
|
pop_indent()
|
|
ret += mcgen("""
|
|
}
|
|
""")
|
|
|
|
ret += mcgen("""
|
|
|
|
visit_end_struct(v, &err);
|
|
if (err) {
|
|
goto clean;
|
|
}
|
|
|
|
obj = qmp_output_get_qobject(qov);
|
|
g_assert(obj != NULL);
|
|
|
|
qdict_put_obj(qmp, "data", obj);
|
|
""")
|
|
|
|
# step 4: call qmp event api
|
|
ret += mcgen("""
|
|
emit(%(event_enum_value)s, qmp, &err);
|
|
|
|
""",
|
|
event_enum_value = c_enum_const(event_enum_name, event_name))
|
|
|
|
# step 5: clean up
|
|
if params and params.members:
|
|
ret += mcgen("""
|
|
clean:
|
|
qmp_output_visitor_cleanup(qov);
|
|
""")
|
|
ret += mcgen("""
|
|
error_propagate(errp, err);
|
|
QDECREF(qmp);
|
|
}
|
|
""")
|
|
|
|
return ret
|
|
|
|
|
|
class QAPISchemaGenEventVisitor(QAPISchemaVisitor):
|
|
def __init__(self):
|
|
self.decl = None
|
|
self.defn = None
|
|
self._event_names = None
|
|
|
|
def visit_begin(self, schema):
|
|
self.decl = ''
|
|
self.defn = ''
|
|
self._event_names = []
|
|
|
|
def visit_end(self):
|
|
self.decl += generate_enum(event_enum_name, self._event_names)
|
|
self.defn += generate_enum_lookup(event_enum_name, self._event_names)
|
|
self._event_names = None
|
|
|
|
def visit_event(self, name, info, arg_type):
|
|
api_name = _generate_event_api_name(name, arg_type)
|
|
self.decl += generate_event_declaration(api_name)
|
|
self.defn += generate_event_implement(api_name, name, arg_type)
|
|
self._event_names.append(name)
|
|
|
|
(input_file, output_dir, do_c, do_h, prefix, dummy) = parse_command_line()
|
|
|
|
c_comment = '''
|
|
/*
|
|
* schema-defined QAPI event functions
|
|
*
|
|
* Copyright (c) 2014 Wenchao Xia
|
|
*
|
|
* Authors:
|
|
* Wenchao Xia <wenchaoqemu@gmail.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
'''
|
|
h_comment = '''
|
|
/*
|
|
* schema-defined QAPI event functions
|
|
*
|
|
* Copyright (c) 2014 Wenchao Xia
|
|
*
|
|
* Authors:
|
|
* Wenchao Xia <wenchaoqemu@gmail.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
'''
|
|
|
|
(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
|
|
'qapi-event.c', 'qapi-event.h',
|
|
c_comment, h_comment)
|
|
fdef.write(mcgen('''
|
|
#include "qemu-common.h"
|
|
#include "%(prefix)sqapi-event.h"
|
|
#include "%(prefix)sqapi-visit.h"
|
|
#include "qapi/qmp-output-visitor.h"
|
|
#include "qapi/qmp-event.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
fdecl.write(mcgen('''
|
|
#include "qapi/error.h"
|
|
#include "qapi/qmp/qdict.h"
|
|
#include "%(prefix)sqapi-types.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
event_enum_name = c_name(prefix + "QAPIEvent", protect=False)
|
|
|
|
schema = QAPISchema(input_file)
|
|
gen = QAPISchemaGenEventVisitor()
|
|
schema.visit(gen)
|
|
fdef.write(gen.defn)
|
|
fdecl.write(gen.decl)
|
|
|
|
close_output(fdef, fdecl)
|