447 lines
11 KiB
Python
447 lines
11 KiB
Python
#
|
|
# QAPI command marshaller generator
|
|
#
|
|
# Copyright IBM, Corp. 2011
|
|
#
|
|
# Authors:
|
|
# Anthony Liguori <aliguori@us.ibm.com>
|
|
# Michael Roth <mdroth@linux.vnet.ibm.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPLv2.
|
|
# See the COPYING.LIB file in the top-level directory.
|
|
|
|
from ordereddict import OrderedDict
|
|
from qapi import *
|
|
import sys
|
|
import os
|
|
import getopt
|
|
import errno
|
|
|
|
def type_visitor(name):
|
|
if type(name) == list:
|
|
return 'visit_type_%sList' % name[0]
|
|
else:
|
|
return 'visit_type_%s' % name
|
|
|
|
def generate_decl_enum(name, members, genlist=True):
|
|
return mcgen('''
|
|
|
|
void %(visitor)s(Visitor *m, %(name)s * obj, const char *name, Error **errp);
|
|
''',
|
|
visitor=type_visitor(name))
|
|
|
|
def generate_command_decl(name, args, ret_type):
|
|
arglist=""
|
|
for argname, argtype, optional, structured in parse_args(args):
|
|
argtype = c_type(argtype)
|
|
if argtype == "char *":
|
|
argtype = "const char *"
|
|
if optional:
|
|
arglist += "bool has_%s, " % c_var(argname)
|
|
arglist += "%s %s, " % (argtype, c_var(argname))
|
|
return mcgen('''
|
|
%(ret_type)s qmp_%(name)s(%(args)sError **errp);
|
|
''',
|
|
ret_type=c_type(ret_type), name=c_var(name), args=arglist).strip()
|
|
|
|
def gen_sync_call(name, args, ret_type, indent=0):
|
|
ret = ""
|
|
arglist=""
|
|
retval=""
|
|
if ret_type:
|
|
retval = "retval = "
|
|
for argname, argtype, optional, structured in parse_args(args):
|
|
if optional:
|
|
arglist += "has_%s, " % c_var(argname)
|
|
arglist += "%s, " % (c_var(argname))
|
|
push_indent(indent)
|
|
ret = mcgen('''
|
|
%(retval)sqmp_%(name)s(%(args)serrp);
|
|
|
|
''',
|
|
name=c_var(name), args=arglist, retval=retval).rstrip()
|
|
if ret_type:
|
|
ret += "\n" + mcgen(''''
|
|
if (!error_is_set(errp)) {
|
|
%(marshal_output_call)s
|
|
}
|
|
''',
|
|
marshal_output_call=gen_marshal_output_call(name, ret_type)).rstrip()
|
|
pop_indent(indent)
|
|
return ret.rstrip()
|
|
|
|
|
|
def gen_marshal_output_call(name, ret_type):
|
|
if not ret_type:
|
|
return ""
|
|
return "qmp_marshal_output_%s(retval, ret, errp);" % c_var(name)
|
|
|
|
def gen_visitor_output_containers_decl(ret_type):
|
|
ret = ""
|
|
push_indent()
|
|
if ret_type:
|
|
ret += mcgen('''
|
|
QmpOutputVisitor *mo;
|
|
QapiDeallocVisitor *md;
|
|
Visitor *v;
|
|
''')
|
|
pop_indent()
|
|
|
|
return ret
|
|
|
|
def gen_visitor_input_containers_decl(args):
|
|
ret = ""
|
|
|
|
push_indent()
|
|
if len(args) > 0:
|
|
ret += mcgen('''
|
|
QmpInputVisitor *mi;
|
|
QapiDeallocVisitor *md;
|
|
Visitor *v;
|
|
''')
|
|
pop_indent()
|
|
|
|
return ret.rstrip()
|
|
|
|
def gen_visitor_input_vars_decl(args):
|
|
ret = ""
|
|
push_indent()
|
|
for argname, argtype, optional, structured in parse_args(args):
|
|
if optional:
|
|
ret += mcgen('''
|
|
bool has_%(argname)s = false;
|
|
''',
|
|
argname=c_var(argname))
|
|
if c_type(argtype).endswith("*"):
|
|
ret += mcgen('''
|
|
%(argtype)s %(argname)s = NULL;
|
|
''',
|
|
argname=c_var(argname), argtype=c_type(argtype))
|
|
else:
|
|
ret += mcgen('''
|
|
%(argtype)s %(argname)s;
|
|
''',
|
|
argname=c_var(argname), argtype=c_type(argtype))
|
|
|
|
pop_indent()
|
|
return ret.rstrip()
|
|
|
|
def gen_visitor_input_block(args, obj, dealloc=False):
|
|
ret = ""
|
|
if len(args) == 0:
|
|
return ret
|
|
|
|
push_indent()
|
|
|
|
if dealloc:
|
|
ret += mcgen('''
|
|
md = qapi_dealloc_visitor_new();
|
|
v = qapi_dealloc_get_visitor(md);
|
|
''')
|
|
else:
|
|
ret += mcgen('''
|
|
mi = qmp_input_visitor_new(%(obj)s);
|
|
v = qmp_input_get_visitor(mi);
|
|
''',
|
|
obj=obj)
|
|
|
|
for argname, argtype, optional, structured in parse_args(args):
|
|
if optional:
|
|
ret += mcgen('''
|
|
visit_start_optional(v, &has_%(c_name)s, "%(name)s", errp);
|
|
if (has_%(c_name)s) {
|
|
''',
|
|
c_name=c_var(argname), name=argname)
|
|
push_indent()
|
|
ret += mcgen('''
|
|
%(visitor)s(v, &%(c_name)s, "%(name)s", errp);
|
|
''',
|
|
c_name=c_var(argname), name=argname, argtype=argtype,
|
|
visitor=type_visitor(argtype))
|
|
if optional:
|
|
pop_indent()
|
|
ret += mcgen('''
|
|
}
|
|
visit_end_optional(v, errp);
|
|
''')
|
|
|
|
if dealloc:
|
|
ret += mcgen('''
|
|
qapi_dealloc_visitor_cleanup(md);
|
|
''')
|
|
else:
|
|
ret += mcgen('''
|
|
qmp_input_visitor_cleanup(mi);
|
|
''')
|
|
pop_indent()
|
|
return ret.rstrip()
|
|
|
|
def gen_marshal_output(name, args, ret_type, middle_mode):
|
|
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)
|
|
{
|
|
QapiDeallocVisitor *md = qapi_dealloc_visitor_new();
|
|
QmpOutputVisitor *mo = qmp_output_visitor_new();
|
|
Visitor *v;
|
|
|
|
v = qmp_output_get_visitor(mo);
|
|
%(visitor)s(v, &ret_in, "unused", errp);
|
|
if (!error_is_set(errp)) {
|
|
*ret_out = qmp_output_get_qobject(mo);
|
|
}
|
|
qmp_output_visitor_cleanup(mo);
|
|
v = qapi_dealloc_get_visitor(md);
|
|
%(visitor)s(v, &ret_in, "unused", errp);
|
|
qapi_dealloc_visitor_cleanup(md);
|
|
}
|
|
''',
|
|
c_ret_type=c_type(ret_type), c_name=c_var(name),
|
|
visitor=type_visitor(ret_type))
|
|
|
|
return ret
|
|
|
|
def gen_marshal_input_decl(name, args, ret_type, middle_mode):
|
|
if middle_mode:
|
|
return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_var(name)
|
|
else:
|
|
return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_var(name)
|
|
|
|
|
|
|
|
def gen_marshal_input(name, args, ret_type, middle_mode):
|
|
hdr = gen_marshal_input_decl(name, args, ret_type, middle_mode)
|
|
|
|
ret = mcgen('''
|
|
%(header)s
|
|
{
|
|
''',
|
|
header=hdr)
|
|
|
|
if middle_mode:
|
|
ret += mcgen('''
|
|
Error *local_err = NULL;
|
|
Error **errp = &local_err;
|
|
QDict *args = (QDict *)qdict;
|
|
''')
|
|
|
|
if ret_type:
|
|
if c_type(ret_type).endswith("*"):
|
|
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 += mcgen('''
|
|
%(visitor_input_containers_decl)s
|
|
%(visitor_input_vars_decl)s
|
|
|
|
%(visitor_input_block)s
|
|
|
|
''',
|
|
visitor_input_containers_decl=gen_visitor_input_containers_decl(args),
|
|
visitor_input_vars_decl=gen_visitor_input_vars_decl(args),
|
|
visitor_input_block=gen_visitor_input_block(args, "QOBJECT(args)"))
|
|
else:
|
|
ret += mcgen('''
|
|
(void)args;
|
|
''')
|
|
|
|
ret += mcgen('''
|
|
if (error_is_set(errp)) {
|
|
goto out;
|
|
}
|
|
%(sync_call)s
|
|
''',
|
|
sync_call=gen_sync_call(name, args, ret_type, indent=4))
|
|
ret += mcgen('''
|
|
|
|
out:
|
|
''')
|
|
ret += mcgen('''
|
|
%(visitor_input_block_cleanup)s
|
|
''',
|
|
visitor_input_block_cleanup=gen_visitor_input_block(args, None,
|
|
dealloc=True))
|
|
|
|
if middle_mode:
|
|
ret += mcgen('''
|
|
|
|
if (local_err) {
|
|
qerror_report_err(local_err);
|
|
error_free(local_err);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
''')
|
|
else:
|
|
ret += mcgen('''
|
|
return;
|
|
''')
|
|
|
|
ret += mcgen('''
|
|
}
|
|
''')
|
|
|
|
return ret
|
|
|
|
def gen_registry(commands):
|
|
registry=""
|
|
push_indent()
|
|
for cmd in commands:
|
|
registry += mcgen('''
|
|
qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s);
|
|
''',
|
|
name=cmd['command'], c_name=c_var(cmd['command']))
|
|
pop_indent()
|
|
ret = mcgen('''
|
|
static void qmp_init_marshal(void)
|
|
{
|
|
%(registry)s
|
|
}
|
|
|
|
qapi_init(qmp_init_marshal);
|
|
''',
|
|
registry=registry.rstrip())
|
|
return ret
|
|
|
|
def gen_command_decl_prologue(header, guard, prefix=""):
|
|
ret = mcgen('''
|
|
/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef %(guard)s
|
|
#define %(guard)s
|
|
|
|
#include "%(prefix)sqapi-types.h"
|
|
#include "error.h"
|
|
|
|
''',
|
|
header=basename(header), guard=guardname(header), prefix=prefix)
|
|
return ret
|
|
|
|
def gen_command_def_prologue(prefix="", proxy=False):
|
|
ret = mcgen('''
|
|
/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include "qemu-objects.h"
|
|
#include "qapi/qmp-core.h"
|
|
#include "qapi/qapi-visit-core.h"
|
|
#include "qapi/qmp-output-visitor.h"
|
|
#include "qapi/qmp-input-visitor.h"
|
|
#include "qapi/qapi-dealloc-visitor.h"
|
|
#include "%(prefix)sqapi-types.h"
|
|
#include "%(prefix)sqapi-visit.h"
|
|
|
|
''',
|
|
prefix=prefix)
|
|
if not proxy:
|
|
ret += '#include "%sqmp-commands.h"' % prefix
|
|
return ret + "\n\n"
|
|
|
|
|
|
try:
|
|
opts, args = getopt.gnu_getopt(sys.argv[1:], "p:o:m", ["prefix=", "output-dir=", "type=", "middle"])
|
|
except getopt.GetoptError, err:
|
|
print str(err)
|
|
sys.exit(1)
|
|
|
|
output_dir = ""
|
|
prefix = ""
|
|
dispatch_type = "sync"
|
|
c_file = 'qmp-marshal.c'
|
|
h_file = 'qmp-commands.h'
|
|
middle_mode = False
|
|
|
|
for o, a in opts:
|
|
if o in ("-p", "--prefix"):
|
|
prefix = a
|
|
elif o in ("-o", "--output-dir"):
|
|
output_dir = a + "/"
|
|
elif o in ("-t", "--type"):
|
|
dispatch_type = a
|
|
elif o in ("-m", "--middle"):
|
|
middle_mode = True
|
|
|
|
c_file = output_dir + prefix + c_file
|
|
h_file = output_dir + prefix + h_file
|
|
|
|
try:
|
|
os.makedirs(output_dir)
|
|
except os.error, e:
|
|
if e.errno != errno.EEXIST:
|
|
raise
|
|
|
|
exprs = parse_schema(sys.stdin)
|
|
commands = filter(lambda expr: expr.has_key('command'), exprs)
|
|
commands = filter(lambda expr: not expr.has_key('gen'), commands)
|
|
|
|
if dispatch_type == "sync":
|
|
fdecl = open(h_file, 'w')
|
|
fdef = open(c_file, 'w')
|
|
ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
|
|
fdecl.write(ret)
|
|
ret = gen_command_def_prologue(prefix=prefix)
|
|
fdef.write(ret)
|
|
|
|
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) + "\n"
|
|
fdecl.write(ret)
|
|
if ret_type:
|
|
ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
|
|
fdef.write(ret)
|
|
|
|
if middle_mode:
|
|
fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
|
|
|
|
ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
|
|
fdef.write(ret)
|
|
|
|
fdecl.write("\n#endif\n");
|
|
|
|
if not middle_mode:
|
|
ret = gen_registry(commands)
|
|
fdef.write(ret)
|
|
|
|
fdef.flush()
|
|
fdef.close()
|
|
fdecl.flush()
|
|
fdecl.close()
|