2 # QAPI command marshaller generator
4 # Copyright IBM, Corp. 2011
5 # Copyright (C) 2014 Red Hat, Inc.
12 # This work is licensed under the terms of the GNU GPL, version 2.
13 # See the COPYING file in the top-level directory.
15 from ordereddict import OrderedDict
23 def type_visitor(name):
24 if type(name) == list:
25 return 'visit_type_%sList' % name[0]
27 return 'visit_type_%s' % name
29 def generate_command_decl(name, args, ret_type):
31 for argname, argtype, optional, structured in parse_args(args):
32 argtype = c_type(argtype, is_param=True)
34 arglist += "bool has_%s, " % c_var(argname)
35 arglist += "%s %s, " % (argtype, c_var(argname))
37 %(ret_type)s qmp_%(name)s(%(args)sError **errp);
39 ret_type=c_type(ret_type), name=c_fun(name), args=arglist).strip()
41 def gen_err_check(errvar):
50 def gen_sync_call(name, args, ret_type, indent=0):
56 for argname, argtype, optional, structured in parse_args(args):
58 arglist += "has_%s, " % c_var(argname)
59 arglist += "%s, " % (c_var(argname))
62 %(retval)sqmp_%(name)s(%(args)s&local_err);
65 name=c_fun(name), args=arglist, retval=retval).rstrip()
67 ret += "\n" + gen_err_check('local_err')
68 ret += "\n" + mcgen(''''
69 %(marshal_output_call)s
71 marshal_output_call=gen_marshal_output_call(name, ret_type)).rstrip()
76 def gen_marshal_output_call(name, ret_type):
79 return "qmp_marshal_output_%s(retval, ret, &local_err);" % c_fun(name)
81 def gen_visitor_input_containers_decl(args, obj):
87 QmpInputVisitor *mi = qmp_input_visitor_new_strict(%(obj)s);
88 QapiDeallocVisitor *md;
96 def gen_visitor_input_vars_decl(args):
99 for argname, argtype, optional, structured in parse_args(args):
102 bool has_%(argname)s = false;
104 argname=c_var(argname))
105 if is_c_ptr(argtype):
107 %(argtype)s %(argname)s = NULL;
109 argname=c_var(argname), argtype=c_type(argtype))
112 %(argtype)s %(argname)s = {0};
114 argname=c_var(argname), argtype=c_type(argtype))
119 def gen_visitor_input_block(args, dealloc=False):
121 errparg = '&local_err'
133 qmp_input_visitor_cleanup(mi);
134 md = qapi_dealloc_visitor_new();
135 v = qapi_dealloc_get_visitor(md);
139 v = qmp_input_get_visitor(mi);
142 for argname, argtype, optional, structured in parse_args(args):
145 visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
147 c_name=c_var(argname), name=argname, errp=errparg)
148 ret += gen_err_check(errarg)
150 if (has_%(c_name)s) {
152 c_name=c_var(argname))
155 %(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
157 c_name=c_var(argname), name=argname, argtype=argtype,
158 visitor=type_visitor(argtype), errp=errparg)
159 ret += gen_err_check(errarg)
168 qapi_dealloc_visitor_cleanup(md);
173 def gen_marshal_output(name, args, ret_type, middle_mode):
178 static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp)
180 Error *local_err = NULL;
181 QmpOutputVisitor *mo = qmp_output_visitor_new();
182 QapiDeallocVisitor *md;
185 v = qmp_output_get_visitor(mo);
186 %(visitor)s(v, &ret_in, "unused", &local_err);
190 *ret_out = qmp_output_get_qobject(mo);
193 error_propagate(errp, local_err);
194 qmp_output_visitor_cleanup(mo);
195 md = qapi_dealloc_visitor_new();
196 v = qapi_dealloc_get_visitor(md);
197 %(visitor)s(v, &ret_in, "unused", NULL);
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)
220 Error *local_err = NULL;
226 QDict *args = (QDict *)qdict;
230 if is_c_ptr(ret_type):
231 retval = " %s retval = NULL;" % c_type(ret_type)
233 retval = " %s retval;" % c_type(ret_type)
241 %(visitor_input_containers_decl)s
242 %(visitor_input_vars_decl)s
244 %(visitor_input_block)s
247 visitor_input_containers_decl=gen_visitor_input_containers_decl(args, "QOBJECT(args)"),
248 visitor_input_vars_decl=gen_visitor_input_vars_decl(args),
249 visitor_input_block=gen_visitor_input_block(args))
259 sync_call=gen_sync_call(name, args, ret_type, indent=4))
260 if re.search('^ *goto out\\;', ret, re.MULTILINE):
267 error_propagate(errp, local_err);
270 %(visitor_input_block_cleanup)s
272 visitor_input_block_cleanup=gen_visitor_input_block(args,
279 qerror_report_err(local_err);
280 error_free(local_err);
296 def option_value_matches(opt, val, cmd):
297 if opt in cmd and cmd[opt] == val:
301 def gen_registry(commands):
305 options = 'QCO_NO_OPTIONS'
306 if option_value_matches('success-response', 'no', cmd):
307 options = 'QCO_NO_SUCCESS_RESP'
309 registry += mcgen('''
310 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
312 name=cmd['command'], c_name=c_fun(cmd['command']),
316 static void qmp_init_marshal(void)
321 qapi_init(qmp_init_marshal);
323 registry=registry.rstrip())
326 def gen_command_decl_prologue(header, guard, prefix=""):
328 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
331 * schema-defined QAPI function prototypes
333 * Copyright IBM, Corp. 2011
338 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
339 * See the COPYING.LIB file in the top-level directory.
346 #include "%(prefix)sqapi-types.h"
347 #include "qapi/qmp/qdict.h"
348 #include "qapi/error.h"
351 header=basename(header), guard=guardname(header), prefix=prefix)
354 def gen_command_def_prologue(prefix="", proxy=False):
356 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
359 * schema-defined QMP->QAPI command dispatch
361 * Copyright IBM, Corp. 2011
366 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
367 * See the COPYING.LIB file in the top-level directory.
371 #include "qemu-common.h"
372 #include "qemu/module.h"
373 #include "qapi/qmp/qerror.h"
374 #include "qapi/qmp/types.h"
375 #include "qapi/qmp/dispatch.h"
376 #include "qapi/visitor.h"
377 #include "qapi/qmp-output-visitor.h"
378 #include "qapi/qmp-input-visitor.h"
379 #include "qapi/dealloc-visitor.h"
380 #include "%(prefix)sqapi-types.h"
381 #include "%(prefix)sqapi-visit.h"
386 ret += '#include "%sqmp-commands.h"' % prefix
391 opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:i:o:m",
392 ["source", "header", "prefix=",
393 "input-file=", "output-dir=",
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 ("-i", "--input-file"):
414 elif o in ("-o", "--output-dir"):
416 elif o in ("-t", "--type"):
418 elif o in ("-m", "--middle"):
420 elif o in ("-c", "--source"):
422 elif o in ("-h", "--header"):
425 if not do_c and not do_h:
429 c_file = output_dir + prefix + c_file
430 h_file = output_dir + prefix + h_file
432 def maybe_open(really, name, opt):
434 return open(name, opt)
437 return StringIO.StringIO()
440 os.makedirs(output_dir)
442 if e.errno != errno.EEXIST:
445 exprs = parse_schema(input_file)
446 commands = filter(lambda expr: expr.has_key('command'), exprs)
447 commands = filter(lambda expr: not expr.has_key('gen'), commands)
449 if dispatch_type == "sync":
450 fdecl = maybe_open(do_h, h_file, 'w')
451 fdef = maybe_open(do_c, c_file, 'w')
452 ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
454 ret = gen_command_def_prologue(prefix=prefix)
460 if cmd.has_key('data'):
461 arglist = cmd['data']
462 if cmd.has_key('returns'):
463 ret_type = cmd['returns']
464 ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
467 ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
471 fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
473 ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
476 fdecl.write("\n#endif\n");
479 ret = gen_registry(commands)