2 # QAPI command marshaller generator
4 # Copyright IBM, Corp. 2011
10 # This work is licensed under the terms of the GNU GPL, version 2.
11 # See the COPYING 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):
141 md = qapi_dealloc_visitor_new();
142 v = qapi_dealloc_get_visitor(md);
146 mi = qmp_input_visitor_new_strict(%(obj)s);
147 v = qmp_input_get_visitor(mi);
151 for argname, argtype, optional, structured in parse_args(args):
154 visit_start_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
155 if (has_%(c_name)s) {
157 c_name=c_var(argname), name=argname, errp=errparg)
160 %(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
162 c_name=c_var(argname), name=argname, argtype=argtype,
163 visitor=type_visitor(argtype), errp=errparg)
168 visit_end_optional(v, %(errp)s);
173 qapi_dealloc_visitor_cleanup(md);
177 qmp_input_visitor_cleanup(mi);
182 def gen_marshal_output(name, args, ret_type, middle_mode):
187 static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp)
189 QapiDeallocVisitor *md = qapi_dealloc_visitor_new();
190 QmpOutputVisitor *mo = qmp_output_visitor_new();
193 v = qmp_output_get_visitor(mo);
194 %(visitor)s(v, &ret_in, "unused", errp);
195 if (!error_is_set(errp)) {
196 *ret_out = qmp_output_get_qobject(mo);
198 qmp_output_visitor_cleanup(mo);
199 v = qapi_dealloc_get_visitor(md);
200 %(visitor)s(v, &ret_in, "unused", NULL);
201 qapi_dealloc_visitor_cleanup(md);
204 c_ret_type=c_type(ret_type), c_name=c_fun(name),
205 visitor=type_visitor(ret_type))
209 def gen_marshal_input_decl(name, args, ret_type, middle_mode):
211 return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_fun(name)
213 return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_fun(name)
217 def gen_marshal_input(name, args, ret_type, middle_mode):
218 hdr = gen_marshal_input_decl(name, args, ret_type, middle_mode)
228 Error *local_err = NULL;
229 Error **errp = &local_err;
230 QDict *args = (QDict *)qdict;
234 if c_type(ret_type).endswith("*"):
235 retval = " %s retval = NULL;" % c_type(ret_type)
237 retval = " %s retval;" % c_type(ret_type)
245 %(visitor_input_containers_decl)s
246 %(visitor_input_vars_decl)s
248 %(visitor_input_block)s
251 visitor_input_containers_decl=gen_visitor_input_containers_decl(args),
252 visitor_input_vars_decl=gen_visitor_input_vars_decl(args),
253 visitor_input_block=gen_visitor_input_block(args, "QOBJECT(args)"))
260 if (error_is_set(errp)) {
265 sync_call=gen_sync_call(name, args, ret_type, indent=4))
271 %(visitor_input_block_cleanup)s
273 visitor_input_block_cleanup=gen_visitor_input_block(args, None,
280 qerror_report_err(local_err);
281 error_free(local_err);
297 def option_value_matches(opt, val, cmd):
298 if opt in cmd and cmd[opt] == val:
302 def gen_registry(commands):
306 options = 'QCO_NO_OPTIONS'
307 if option_value_matches('success-response', 'no', cmd):
308 options = 'QCO_NO_SUCCESS_RESP'
310 registry += mcgen('''
311 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
313 name=cmd['command'], c_name=c_fun(cmd['command']),
317 static void qmp_init_marshal(void)
322 qapi_init(qmp_init_marshal);
324 registry=registry.rstrip())
327 def gen_command_decl_prologue(header, guard, prefix=""):
329 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
332 * schema-defined QAPI function prototypes
334 * Copyright IBM, Corp. 2011
339 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
340 * See the COPYING.LIB file in the top-level directory.
347 #include "%(prefix)sqapi-types.h"
348 #include "qapi/qmp/qdict.h"
349 #include "qapi/error.h"
352 header=basename(header), guard=guardname(header), prefix=prefix)
355 def gen_command_def_prologue(prefix="", proxy=False):
357 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
360 * schema-defined QMP->QAPI command dispatch
362 * Copyright IBM, Corp. 2011
367 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
368 * See the COPYING.LIB file in the top-level directory.
372 #include "qemu-common.h"
373 #include "qemu/module.h"
374 #include "qapi/qmp/qerror.h"
375 #include "qapi/qmp/types.h"
376 #include "qapi/qmp/dispatch.h"
377 #include "qapi/visitor.h"
378 #include "qapi/qmp-output-visitor.h"
379 #include "qapi/qmp-input-visitor.h"
380 #include "qapi/dealloc-visitor.h"
381 #include "%(prefix)sqapi-types.h"
382 #include "%(prefix)sqapi-visit.h"
387 ret += '#include "%sqmp-commands.h"' % prefix
392 opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:m",
393 ["source", "header", "prefix=",
394 "output-dir=", "type=", "middle"])
395 except getopt.GetoptError, err:
401 dispatch_type = "sync"
402 c_file = 'qmp-marshal.c'
403 h_file = 'qmp-commands.h'
410 if o in ("-p", "--prefix"):
412 elif o in ("-o", "--output-dir"):
414 elif o in ("-t", "--type"):
416 elif o in ("-m", "--middle"):
418 elif o in ("-c", "--source"):
420 elif o in ("-h", "--header"):
423 if not do_c and not do_h:
427 c_file = output_dir + prefix + c_file
428 h_file = output_dir + prefix + h_file
430 def maybe_open(really, name, opt):
432 return open(name, opt)
435 return StringIO.StringIO()
438 os.makedirs(output_dir)
440 if e.errno != errno.EEXIST:
443 exprs = parse_schema(sys.stdin)
444 commands = filter(lambda expr: expr.has_key('command'), exprs)
445 commands = filter(lambda expr: not expr.has_key('gen'), commands)
447 if dispatch_type == "sync":
448 fdecl = maybe_open(do_h, h_file, 'w')
449 fdef = maybe_open(do_c, c_file, 'w')
450 ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
452 ret = gen_command_def_prologue(prefix=prefix)
458 if cmd.has_key('data'):
459 arglist = cmd['data']
460 if cmd.has_key('returns'):
461 ret_type = cmd['returns']
462 ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
465 ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
469 fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
471 ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
474 fdecl.write("\n#endif\n");
477 ret = gen_registry(commands)