mirror of
https://github.com/qemu/qemu.git
synced 2024-12-10 04:03:42 +08:00
e98859a9b9
Generate just 'FOO' instead of 'struct FOO' when possible. Drop helper functions that are now unused. Make pep8 and pylint reasonably happy. Rename generate_FOO() functions to gen_FOO() for consistency. Use more consistent and sensible variable names. Consistently use c_ for mapping keys when their value is a C identifier or type. Simplify gen_enum() and gen_visit_union() Consistently use single quotes for C text string literals. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1442401589-24189-14-git-send-email-armbru@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
389 lines
8.8 KiB
Python
389 lines
8.8 KiB
Python
#
|
|
# QAPI command marshaller generator
|
|
#
|
|
# Copyright IBM, Corp. 2011
|
|
# Copyright (C) 2014-2015 Red Hat, Inc.
|
|
#
|
|
# Authors:
|
|
# Anthony Liguori <aliguori@us.ibm.com>
|
|
# Michael Roth <mdroth@linux.vnet.ibm.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 *
|
|
import re
|
|
|
|
|
|
def gen_command_decl(name, arg_type, ret_type):
|
|
argstr = ''
|
|
if arg_type:
|
|
for memb in arg_type.members:
|
|
if memb.optional:
|
|
argstr += 'bool has_%s, ' % c_name(memb.name)
|
|
argstr += '%s %s, ' % (memb.type.c_type(is_param=True),
|
|
c_name(memb.name))
|
|
return mcgen('''
|
|
%(c_type)s qmp_%(c_name)s(%(args)sError **errp);
|
|
''',
|
|
c_type=(ret_type and ret_type.c_type()) or 'void',
|
|
c_name=c_name(name),
|
|
args=argstr)
|
|
|
|
|
|
def gen_err_check(err):
|
|
if not err:
|
|
return ''
|
|
return mcgen('''
|
|
if (%(err)s) {
|
|
goto out;
|
|
}
|
|
''',
|
|
err=err)
|
|
|
|
|
|
def gen_call(name, arg_type, ret_type):
|
|
ret = ''
|
|
|
|
argstr = ''
|
|
if arg_type:
|
|
for memb in arg_type.members:
|
|
if memb.optional:
|
|
argstr += 'has_%s, ' % c_name(memb.name)
|
|
argstr += '%s, ' % c_name(memb.name)
|
|
|
|
lhs = ''
|
|
if ret_type:
|
|
lhs = 'retval = '
|
|
|
|
push_indent()
|
|
ret = mcgen('''
|
|
%(lhs)sqmp_%(c_name)s(%(args)s&local_err);
|
|
''',
|
|
c_name=c_name(name), args=argstr, lhs=lhs)
|
|
if ret_type:
|
|
ret += gen_err_check('local_err')
|
|
ret += mcgen('''
|
|
|
|
qmp_marshal_output_%(c_name)s(retval, ret, &local_err);
|
|
''',
|
|
c_name=c_name(name))
|
|
pop_indent()
|
|
return ret
|
|
|
|
|
|
def gen_visitor_input_containers_decl(arg_type):
|
|
ret = ''
|
|
|
|
push_indent()
|
|
if arg_type:
|
|
ret += mcgen('''
|
|
QmpInputVisitor *mi = qmp_input_visitor_new_strict(QOBJECT(args));
|
|
QapiDeallocVisitor *md;
|
|
Visitor *v;
|
|
''')
|
|
pop_indent()
|
|
|
|
return ret
|
|
|
|
|
|
def gen_visitor_input_vars_decl(arg_type):
|
|
ret = ''
|
|
push_indent()
|
|
|
|
if arg_type:
|
|
for memb in arg_type.members:
|
|
if memb.optional:
|
|
ret += mcgen('''
|
|
bool has_%(c_name)s = false;
|
|
''',
|
|
c_name=c_name(memb.name))
|
|
ret += mcgen('''
|
|
%(c_type)s %(c_name)s = %(c_null)s;
|
|
''',
|
|
c_name=c_name(memb.name),
|
|
c_type=memb.type.c_type(),
|
|
c_null=memb.type.c_null())
|
|
|
|
pop_indent()
|
|
return ret
|
|
|
|
|
|
def gen_visitor_input_block(arg_type, dealloc=False):
|
|
ret = ''
|
|
errparg = '&local_err'
|
|
errarg = 'local_err'
|
|
|
|
if not arg_type:
|
|
return ret
|
|
|
|
push_indent()
|
|
|
|
if dealloc:
|
|
errparg = 'NULL'
|
|
errarg = None
|
|
ret += mcgen('''
|
|
qmp_input_visitor_cleanup(mi);
|
|
md = qapi_dealloc_visitor_new();
|
|
v = qapi_dealloc_get_visitor(md);
|
|
''')
|
|
else:
|
|
ret += mcgen('''
|
|
v = qmp_input_get_visitor(mi);
|
|
''')
|
|
|
|
for memb in arg_type.members:
|
|
if memb.optional:
|
|
ret += mcgen('''
|
|
visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
|
|
''',
|
|
c_name=c_name(memb.name), name=memb.name,
|
|
errp=errparg)
|
|
ret += gen_err_check(errarg)
|
|
ret += mcgen('''
|
|
if (has_%(c_name)s) {
|
|
''',
|
|
c_name=c_name(memb.name))
|
|
push_indent()
|
|
ret += mcgen('''
|
|
visit_type_%(c_type)s(v, &%(c_name)s, "%(name)s", %(errp)s);
|
|
''',
|
|
c_name=c_name(memb.name), name=memb.name,
|
|
c_type=memb.type.c_name(), errp=errparg)
|
|
ret += gen_err_check(errarg)
|
|
if memb.optional:
|
|
pop_indent()
|
|
ret += mcgen('''
|
|
}
|
|
''')
|
|
|
|
if dealloc:
|
|
ret += mcgen('''
|
|
qapi_dealloc_visitor_cleanup(md);
|
|
''')
|
|
pop_indent()
|
|
return ret
|
|
|
|
|
|
def gen_marshal_output(name, ret_type):
|
|
if not ret_type:
|
|
return ''
|
|
|
|
ret = mcgen('''
|
|
|
|
static void qmp_marshal_output_%(c_cmd_name)s(%(c_type)s ret_in, QObject **ret_out, Error **errp)
|
|
{
|
|
Error *local_err = NULL;
|
|
QmpOutputVisitor *mo = qmp_output_visitor_new();
|
|
QapiDeallocVisitor *md;
|
|
Visitor *v;
|
|
|
|
v = qmp_output_get_visitor(mo);
|
|
visit_type_%(c_name)s(v, &ret_in, "unused", &local_err);
|
|
if (local_err) {
|
|
goto out;
|
|
}
|
|
*ret_out = qmp_output_get_qobject(mo);
|
|
|
|
out:
|
|
error_propagate(errp, local_err);
|
|
qmp_output_visitor_cleanup(mo);
|
|
md = qapi_dealloc_visitor_new();
|
|
v = qapi_dealloc_get_visitor(md);
|
|
visit_type_%(c_name)s(v, &ret_in, "unused", NULL);
|
|
qapi_dealloc_visitor_cleanup(md);
|
|
}
|
|
''',
|
|
c_type=ret_type.c_type(), c_cmd_name=c_name(name),
|
|
c_name=ret_type.c_name())
|
|
|
|
return ret
|
|
|
|
|
|
def gen_marshal_input_decl(name):
|
|
ret = 'void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_name(name)
|
|
if not middle_mode:
|
|
ret = 'static ' + ret
|
|
return ret
|
|
|
|
|
|
def gen_marshal_input(name, arg_type, ret_type):
|
|
hdr = gen_marshal_input_decl(name)
|
|
|
|
ret = mcgen('''
|
|
|
|
%(header)s
|
|
{
|
|
Error *local_err = NULL;
|
|
''',
|
|
header=hdr)
|
|
|
|
if ret_type:
|
|
ret += mcgen('''
|
|
%(c_type)s retval;
|
|
''',
|
|
c_type=ret_type.c_type())
|
|
|
|
if arg_type:
|
|
ret += gen_visitor_input_containers_decl(arg_type)
|
|
ret += gen_visitor_input_vars_decl(arg_type) + '\n'
|
|
ret += gen_visitor_input_block(arg_type) + '\n'
|
|
else:
|
|
ret += mcgen('''
|
|
|
|
(void)args;
|
|
|
|
''')
|
|
|
|
ret += gen_call(name, arg_type, ret_type)
|
|
|
|
if re.search('^ *goto out;', ret, re.MULTILINE):
|
|
ret += mcgen('''
|
|
|
|
out:
|
|
''')
|
|
ret += mcgen('''
|
|
error_propagate(errp, local_err);
|
|
''')
|
|
ret += gen_visitor_input_block(arg_type, dealloc=True)
|
|
ret += mcgen('''
|
|
}
|
|
''')
|
|
return ret
|
|
|
|
|
|
def gen_register_command(name, success_response):
|
|
push_indent()
|
|
options = 'QCO_NO_OPTIONS'
|
|
if not success_response:
|
|
options = 'QCO_NO_SUCCESS_RESP'
|
|
|
|
ret = mcgen('''
|
|
qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
|
|
''',
|
|
name=name, c_name=c_name(name),
|
|
opts=options)
|
|
pop_indent()
|
|
return ret
|
|
|
|
|
|
def gen_registry(registry):
|
|
ret = mcgen('''
|
|
|
|
static void qmp_init_marshal(void)
|
|
{
|
|
''')
|
|
ret += registry
|
|
ret += mcgen('''
|
|
}
|
|
|
|
qapi_init(qmp_init_marshal);
|
|
''')
|
|
return ret
|
|
|
|
|
|
class QAPISchemaGenCommandVisitor(QAPISchemaVisitor):
|
|
def __init__(self):
|
|
self.decl = None
|
|
self.defn = None
|
|
self._regy = None
|
|
|
|
def visit_begin(self, schema):
|
|
self.decl = ''
|
|
self.defn = ''
|
|
self._regy = ''
|
|
|
|
def visit_end(self):
|
|
if not middle_mode:
|
|
self.defn += gen_registry(self._regy)
|
|
self._regy = None
|
|
|
|
def visit_command(self, name, info, arg_type, ret_type,
|
|
gen, success_response):
|
|
if not gen:
|
|
return
|
|
self.decl += gen_command_decl(name, arg_type, ret_type)
|
|
if ret_type:
|
|
self.defn += gen_marshal_output(name, ret_type)
|
|
if middle_mode:
|
|
self.decl += gen_marshal_input_decl(name) + ';\n'
|
|
self.defn += gen_marshal_input(name, arg_type, ret_type)
|
|
if not middle_mode:
|
|
self._regy += gen_register_command(name, success_response)
|
|
|
|
|
|
middle_mode = False
|
|
|
|
(input_file, output_dir, do_c, do_h, prefix, opts) = \
|
|
parse_command_line("m", ["middle"])
|
|
|
|
for o, a in opts:
|
|
if o in ("-m", "--middle"):
|
|
middle_mode = True
|
|
|
|
c_comment = '''
|
|
/*
|
|
* schema-defined QMP->QAPI command dispatch
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.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 function prototypes
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.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,
|
|
'qmp-marshal.c', 'qmp-commands.h',
|
|
c_comment, h_comment)
|
|
|
|
fdef.write(mcgen('''
|
|
#include "qemu-common.h"
|
|
#include "qemu/module.h"
|
|
#include "qapi/qmp/types.h"
|
|
#include "qapi/qmp/dispatch.h"
|
|
#include "qapi/visitor.h"
|
|
#include "qapi/qmp-output-visitor.h"
|
|
#include "qapi/qmp-input-visitor.h"
|
|
#include "qapi/dealloc-visitor.h"
|
|
#include "%(prefix)sqapi-types.h"
|
|
#include "%(prefix)sqapi-visit.h"
|
|
#include "%(prefix)sqmp-commands.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
fdecl.write(mcgen('''
|
|
#include "%(prefix)sqapi-types.h"
|
|
#include "qapi/qmp/qdict.h"
|
|
#include "qapi/error.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
schema = QAPISchema(input_file)
|
|
gen = QAPISchemaGenCommandVisitor()
|
|
schema.visit(gen)
|
|
fdef.write(gen.defn)
|
|
fdecl.write(gen.decl)
|
|
|
|
close_output(fdef, fdecl)
|