mirror of
https://github.com/qemu/qemu.git
synced 2024-12-05 17:53:36 +08:00
1f9a7a1a58
Multiple passes through mcgen() is prone to produce unwanted blank lines, which we then combat by sprinkling .rstrip() on top. Just don't do it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
363 lines
8.8 KiB
Python
363 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 ordereddict import OrderedDict
|
|
from qapi import *
|
|
import re
|
|
|
|
def generate_command_decl(name, args, ret_type):
|
|
arglist=""
|
|
for argname, argtype, optional in parse_args(args):
|
|
argtype = c_type(argtype, is_param=True)
|
|
if optional:
|
|
arglist += "bool has_%s, " % c_name(argname)
|
|
arglist += "%s %s, " % (argtype, c_name(argname))
|
|
return mcgen('''
|
|
%(ret_type)s qmp_%(name)s(%(args)sError **errp);
|
|
''',
|
|
ret_type=c_type(ret_type), name=c_name(name),
|
|
args=arglist)
|
|
|
|
def gen_err_check(err):
|
|
if not err:
|
|
return ''
|
|
return mcgen('''
|
|
if (%(err)s) {
|
|
goto out;
|
|
}
|
|
''',
|
|
err=err)
|
|
|
|
def gen_sync_call(name, args, ret_type):
|
|
ret = ""
|
|
arglist=""
|
|
retval=""
|
|
if ret_type:
|
|
retval = "retval = "
|
|
for argname, argtype, optional in parse_args(args):
|
|
if optional:
|
|
arglist += "has_%s, " % c_name(argname)
|
|
arglist += "%s, " % (c_name(argname))
|
|
push_indent()
|
|
ret = mcgen('''
|
|
%(retval)sqmp_%(name)s(%(args)s&local_err);
|
|
''',
|
|
name=c_name(name), args=arglist, retval=retval)
|
|
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(args):
|
|
ret = ""
|
|
|
|
push_indent()
|
|
if len(args) > 0:
|
|
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(args):
|
|
ret = ""
|
|
push_indent()
|
|
for argname, argtype, optional in parse_args(args):
|
|
if optional:
|
|
ret += mcgen('''
|
|
bool has_%(argname)s = false;
|
|
''',
|
|
argname=c_name(argname))
|
|
if is_c_ptr(argtype):
|
|
ret += mcgen('''
|
|
%(argtype)s %(argname)s = NULL;
|
|
''',
|
|
argname=c_name(argname), argtype=c_type(argtype))
|
|
else:
|
|
ret += mcgen('''
|
|
%(argtype)s %(argname)s = {0};
|
|
''',
|
|
argname=c_name(argname), argtype=c_type(argtype))
|
|
|
|
pop_indent()
|
|
return ret
|
|
|
|
def gen_visitor_input_block(args, dealloc=False):
|
|
ret = ""
|
|
errparg = '&local_err'
|
|
errarg = 'local_err'
|
|
|
|
if len(args) == 0:
|
|
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 argname, argtype, optional in parse_args(args):
|
|
if optional:
|
|
ret += mcgen('''
|
|
visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
|
|
''',
|
|
c_name=c_name(argname), name=argname, errp=errparg)
|
|
ret += gen_err_check(errarg)
|
|
ret += mcgen('''
|
|
if (has_%(c_name)s) {
|
|
''',
|
|
c_name=c_name(argname))
|
|
push_indent()
|
|
ret += mcgen('''
|
|
visit_type_%(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
|
|
''',
|
|
c_name=c_name(argname), name=argname, argtype=argtype,
|
|
visitor=type_name(argtype), errp=errparg)
|
|
ret += gen_err_check(errarg)
|
|
if 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_name)s(%(c_ret_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_%(visitor)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_%(visitor)s(v, &ret_in, "unused", NULL);
|
|
qapi_dealloc_visitor_cleanup(md);
|
|
}
|
|
''',
|
|
c_ret_type=c_type(ret_type), c_name=c_name(name),
|
|
visitor=type_name(ret_type))
|
|
|
|
return ret
|
|
|
|
def gen_marshal_input_decl(name, middle_mode):
|
|
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, args, ret_type, middle_mode):
|
|
hdr = gen_marshal_input_decl(name, middle_mode)
|
|
|
|
ret = mcgen('''
|
|
%(header)s
|
|
{
|
|
Error *local_err = NULL;
|
|
''',
|
|
header=hdr)
|
|
|
|
if ret_type:
|
|
if is_c_ptr(ret_type):
|
|
retval = " %s retval = NULL;" % c_type(ret_type)
|
|
else:
|
|
retval = " %s retval;" % c_type(ret_type)
|
|
ret += mcgen('''
|
|
%(retval)s
|
|
''',
|
|
retval=retval)
|
|
|
|
if len(args) > 0:
|
|
ret += gen_visitor_input_containers_decl(args)
|
|
ret += gen_visitor_input_vars_decl(args) + '\n'
|
|
ret += gen_visitor_input_block(args) + '\n'
|
|
else:
|
|
ret += mcgen('''
|
|
|
|
(void)args;
|
|
''')
|
|
|
|
ret += gen_sync_call(name, args, 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(args, dealloc=True)
|
|
ret += mcgen('''
|
|
}
|
|
''')
|
|
return ret
|
|
|
|
def gen_registry(commands):
|
|
registry=""
|
|
push_indent()
|
|
for cmd in commands:
|
|
options = 'QCO_NO_OPTIONS'
|
|
if not cmd.get('success-response', True):
|
|
options = 'QCO_NO_SUCCESS_RESP'
|
|
|
|
registry += mcgen('''
|
|
qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
|
|
''',
|
|
name=cmd['command'], c_name=c_name(cmd['command']),
|
|
opts=options)
|
|
pop_indent()
|
|
ret = mcgen('''
|
|
static void qmp_init_marshal(void)
|
|
{
|
|
''')
|
|
ret += registry
|
|
ret += mcgen('''
|
|
}
|
|
|
|
qapi_init(qmp_init_marshal);
|
|
''')
|
|
return ret
|
|
|
|
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
|
|
|
|
exprs = parse_schema(input_file)
|
|
commands = filter(lambda expr: expr.has_key('command'), exprs)
|
|
commands = filter(lambda expr: not expr.has_key('gen'), commands)
|
|
|
|
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))
|
|
|
|
for cmd in commands:
|
|
arglist = []
|
|
ret_type = None
|
|
if cmd.has_key('data'):
|
|
arglist = cmd['data']
|
|
if cmd.has_key('returns'):
|
|
ret_type = cmd['returns']
|
|
ret = generate_command_decl(cmd['command'], arglist, ret_type)
|
|
fdecl.write(ret)
|
|
if ret_type:
|
|
ret = gen_marshal_output(cmd['command'], ret_type) + "\n"
|
|
fdef.write(ret)
|
|
|
|
if middle_mode:
|
|
fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], middle_mode))
|
|
|
|
ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
|
|
fdef.write(ret)
|
|
|
|
if not middle_mode:
|
|
ret = gen_registry(commands)
|
|
fdef.write(ret)
|
|
|
|
close_output(fdef, fdecl)
|