2 # QAPI command marshaller generator
4 # Copyright IBM, Corp. 2011
7 # Anthony Liguori <aliguori@us.ibm.com>
8 # Michael Roth <mdroth@linux.vnet.ibm.com>
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 option_value_matches(opt, val, cmd):
295 if opt in cmd and cmd[opt] == val:
299 def gen_registry(commands):
303 options = 'QCO_NO_OPTIONS'
304 if option_value_matches('success-response', 'no', cmd):
305 options = 'QCO_NO_SUCCESS_RESP'
307 registry += mcgen('''
308 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
310 name=cmd['command'], c_name=c_fun(cmd['command']),
314 static void qmp_init_marshal(void)
319 qapi_init(qmp_init_marshal);
321 registry=registry.rstrip())
324 def gen_command_decl_prologue(header, guard, prefix=""):
326 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
329 * schema-defined QAPI function prototypes
331 * Copyright IBM, Corp. 2011
334 * Anthony Liguori <aliguori@us.ibm.com>
336 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
337 * See the COPYING.LIB file in the top-level directory.
344 #include "%(prefix)sqapi-types.h"
345 #include "qapi/qmp/qdict.h"
346 #include "qapi/error.h"
349 header=basename(header), guard=guardname(header), prefix=prefix)
352 def gen_command_def_prologue(prefix="", proxy=False):
354 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
357 * schema-defined QMP->QAPI command dispatch
359 * Copyright IBM, Corp. 2011
362 * Anthony Liguori <aliguori@us.ibm.com>
364 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
365 * See the COPYING.LIB file in the top-level directory.
369 #include "qemu-common.h"
370 #include "qemu/module.h"
371 #include "qapi/qmp/qerror.h"
372 #include "qapi/qmp/types.h"
373 #include "qapi/qmp/dispatch.h"
374 #include "qapi/visitor.h"
375 #include "qapi/qmp-output-visitor.h"
376 #include "qapi/qmp-input-visitor.h"
377 #include "qapi/dealloc-visitor.h"
378 #include "%(prefix)sqapi-types.h"
379 #include "%(prefix)sqapi-visit.h"
384 ret += '#include "%sqmp-commands.h"' % prefix
389 opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:m",
390 ["source", "header", "prefix=",
391 "output-dir=", "type=", "middle"])
392 except getopt.GetoptError, err:
398 dispatch_type = "sync"
399 c_file = 'qmp-marshal.c'
400 h_file = 'qmp-commands.h'
407 if o in ("-p", "--prefix"):
409 elif o in ("-o", "--output-dir"):
411 elif o in ("-t", "--type"):
413 elif o in ("-m", "--middle"):
415 elif o in ("-c", "--source"):
417 elif o in ("-h", "--header"):
420 if not do_c and not do_h:
424 c_file = output_dir + prefix + c_file
425 h_file = output_dir + prefix + h_file
427 def maybe_open(really, name, opt):
429 return open(name, opt)
432 return StringIO.StringIO()
435 os.makedirs(output_dir)
437 if e.errno != errno.EEXIST:
440 exprs = parse_schema(sys.stdin)
441 commands = filter(lambda expr: expr.has_key('command'), exprs)
442 commands = filter(lambda expr: not expr.has_key('gen'), commands)
444 if dispatch_type == "sync":
445 fdecl = maybe_open(do_h, h_file, 'w')
446 fdef = maybe_open(do_c, c_file, 'w')
447 ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
449 ret = gen_command_def_prologue(prefix=prefix)
455 if cmd.has_key('data'):
456 arglist = cmd['data']
457 if cmd.has_key('returns'):
458 ret_type = cmd['returns']
459 ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
462 ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
466 fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
468 ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
471 fdecl.write("\n#endif\n");
474 ret = gen_registry(commands)