2 # QAPI command marshaller generator
4 # Copyright IBM, Corp. 2011
10 # This work is licensed under the terms of the GNU GPLv2.
11 # See the COPYING.LIB file in the top-level directory.
13 from ordereddict import OrderedDict
20 def type_visitor(name):
21 if type(name) == list:
22 return 'visit_type_%sList' % name[0]
24 return 'visit_type_%s' % name
26 def generate_decl_enum(name, members, genlist=True):
29 void %(visitor)s(Visitor *m, %(name)s * obj, const char *name, Error **errp);
31 visitor=type_visitor(name))
33 def generate_command_decl(name, args, ret_type):
35 for argname, argtype, optional, structured in parse_args(args):
36 argtype = c_type(argtype)
37 if argtype == "char *":
38 argtype = "const char *"
40 arglist += "bool has_%s, " % c_var(argname)
41 arglist += "%s %s, " % (argtype, c_var(argname))
43 %(ret_type)s qmp_%(name)s(%(args)sError **errp);
45 ret_type=c_type(ret_type), name=c_fun(name), args=arglist).strip()
47 def gen_sync_call(name, args, ret_type, indent=0):
53 for argname, argtype, optional, structured in parse_args(args):
55 arglist += "has_%s, " % c_var(argname)
56 arglist += "%s, " % (c_var(argname))
59 %(retval)sqmp_%(name)s(%(args)serrp);
62 name=c_fun(name), args=arglist, retval=retval).rstrip()
64 ret += "\n" + mcgen(''''
65 if (!error_is_set(errp)) {
66 %(marshal_output_call)s
69 marshal_output_call=gen_marshal_output_call(name, ret_type)).rstrip()
74 def gen_marshal_output_call(name, ret_type):
77 return "qmp_marshal_output_%s(retval, ret, errp);" % c_fun(name)
79 def gen_visitor_output_containers_decl(ret_type):
85 QapiDeallocVisitor *md;
92 def gen_visitor_input_containers_decl(args):
99 QapiDeallocVisitor *md;
106 def gen_visitor_input_vars_decl(args):
109 for argname, argtype, optional, structured in parse_args(args):
112 bool has_%(argname)s = false;
114 argname=c_var(argname))
115 if c_type(argtype).endswith("*"):
117 %(argtype)s %(argname)s = NULL;
119 argname=c_var(argname), argtype=c_type(argtype))
122 %(argtype)s %(argname)s;
124 argname=c_var(argname), argtype=c_type(argtype))
129 def gen_visitor_input_block(args, obj, dealloc=False):
138 md = qapi_dealloc_visitor_new();
139 v = qapi_dealloc_get_visitor(md);
143 mi = qmp_input_visitor_new_strict(%(obj)s);
144 v = qmp_input_get_visitor(mi);
148 for argname, argtype, optional, structured in parse_args(args):
151 visit_start_optional(v, &has_%(c_name)s, "%(name)s", errp);
152 if (has_%(c_name)s) {
154 c_name=c_var(argname), name=argname)
157 %(visitor)s(v, &%(c_name)s, "%(name)s", errp);
159 c_name=c_var(argname), name=argname, argtype=argtype,
160 visitor=type_visitor(argtype))
165 visit_end_optional(v, errp);
170 qapi_dealloc_visitor_cleanup(md);
174 qmp_input_visitor_cleanup(mi);
179 def gen_marshal_output(name, args, ret_type, middle_mode):
184 static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp)
186 QapiDeallocVisitor *md = qapi_dealloc_visitor_new();
187 QmpOutputVisitor *mo = qmp_output_visitor_new();
190 v = qmp_output_get_visitor(mo);
191 %(visitor)s(v, &ret_in, "unused", errp);
192 if (!error_is_set(errp)) {
193 *ret_out = qmp_output_get_qobject(mo);
195 qmp_output_visitor_cleanup(mo);
196 v = qapi_dealloc_get_visitor(md);
197 %(visitor)s(v, &ret_in, "unused", errp);
198 qapi_dealloc_visitor_cleanup(md);
201 c_ret_type=c_type(ret_type), c_name=c_fun(name),
202 visitor=type_visitor(ret_type))
206 def gen_marshal_input_decl(name, args, ret_type, middle_mode):
208 return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_fun(name)
210 return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_fun(name)
214 def gen_marshal_input(name, args, ret_type, middle_mode):
215 hdr = gen_marshal_input_decl(name, args, ret_type, middle_mode)
225 Error *local_err = NULL;
226 Error **errp = &local_err;
227 QDict *args = (QDict *)qdict;
231 if c_type(ret_type).endswith("*"):
232 retval = " %s retval = NULL;" % c_type(ret_type)
234 retval = " %s retval;" % c_type(ret_type)
242 %(visitor_input_containers_decl)s
243 %(visitor_input_vars_decl)s
245 %(visitor_input_block)s
248 visitor_input_containers_decl=gen_visitor_input_containers_decl(args),
249 visitor_input_vars_decl=gen_visitor_input_vars_decl(args),
250 visitor_input_block=gen_visitor_input_block(args, "QOBJECT(args)"))
257 if (error_is_set(errp)) {
262 sync_call=gen_sync_call(name, args, ret_type, indent=4))
268 %(visitor_input_block_cleanup)s
270 visitor_input_block_cleanup=gen_visitor_input_block(args, None,
277 qerror_report_err(local_err);
278 error_free(local_err);
294 def gen_registry(commands):
298 registry += mcgen('''
299 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s);
301 name=cmd['command'], c_name=c_fun(cmd['command']))
304 static void qmp_init_marshal(void)
309 qapi_init(qmp_init_marshal);
311 registry=registry.rstrip())
314 def gen_command_decl_prologue(header, guard, prefix=""):
316 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
319 * schema-defined QAPI function prototypes
321 * Copyright IBM, Corp. 2011
326 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
327 * See the COPYING.LIB file in the top-level directory.
334 #include "%(prefix)sqapi-types.h"
338 header=basename(header), guard=guardname(header), prefix=prefix)
341 def gen_command_def_prologue(prefix="", proxy=False):
343 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
346 * schema-defined QMP->QAPI command dispatch
348 * Copyright IBM, Corp. 2011
353 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
354 * See the COPYING.LIB file in the top-level directory.
358 #include "qemu-objects.h"
359 #include "qapi/qmp-core.h"
360 #include "qapi/qapi-visit-core.h"
361 #include "qapi/qmp-output-visitor.h"
362 #include "qapi/qmp-input-visitor.h"
363 #include "qapi/qapi-dealloc-visitor.h"
364 #include "%(prefix)sqapi-types.h"
365 #include "%(prefix)sqapi-visit.h"
370 ret += '#include "%sqmp-commands.h"' % prefix
375 opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:m",
376 ["source", "header", "prefix=",
377 "output-dir=", "type=", "middle"])
378 except getopt.GetoptError, err:
384 dispatch_type = "sync"
385 c_file = 'qmp-marshal.c'
386 h_file = 'qmp-commands.h'
393 if o in ("-p", "--prefix"):
395 elif o in ("-o", "--output-dir"):
397 elif o in ("-t", "--type"):
399 elif o in ("-m", "--middle"):
401 elif o in ("-c", "--source"):
403 elif o in ("-h", "--header"):
406 if not do_c and not do_h:
410 c_file = output_dir + prefix + c_file
411 h_file = output_dir + prefix + h_file
413 def maybe_open(really, name, opt):
415 return open(name, opt)
418 return StringIO.StringIO()
421 os.makedirs(output_dir)
423 if e.errno != errno.EEXIST:
426 exprs = parse_schema(sys.stdin)
427 commands = filter(lambda expr: expr.has_key('command'), exprs)
428 commands = filter(lambda expr: not expr.has_key('gen'), commands)
430 if dispatch_type == "sync":
431 fdecl = maybe_open(do_h, h_file, 'w')
432 fdef = maybe_open(do_c, c_file, 'w')
433 ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
435 ret = gen_command_def_prologue(prefix=prefix)
441 if cmd.has_key('data'):
442 arglist = cmd['data']
443 if cmd.has_key('returns'):
444 ret_type = cmd['returns']
445 ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
448 ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
452 fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
454 ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
457 fdecl.write("\n#endif\n");
460 ret = gen_registry(commands)