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)
33 if argtype == "char *":
34 argtype = "const char *"
36 arglist += "bool has_%s, " % c_var(argname)
37 arglist += "%s %s, " % (argtype, c_var(argname))
39 %(ret_type)s qmp_%(name)s(%(args)sError **errp);
41 ret_type=c_type(ret_type), name=c_fun(name), args=arglist).strip()
43 def gen_err_check(errvar):
52 def gen_sync_call(name, args, ret_type, indent=0):
58 for argname, argtype, optional, structured in parse_args(args):
60 arglist += "has_%s, " % c_var(argname)
61 arglist += "%s, " % (c_var(argname))
64 %(retval)sqmp_%(name)s(%(args)s&local_err);
67 name=c_fun(name), args=arglist, retval=retval).rstrip()
69 ret += "\n" + gen_err_check('local_err')
70 ret += "\n" + mcgen(''''
71 %(marshal_output_call)s
73 marshal_output_call=gen_marshal_output_call(name, ret_type)).rstrip()
78 def gen_marshal_output_call(name, ret_type):
81 return "qmp_marshal_output_%s(retval, ret, &local_err);" % c_fun(name)
83 def gen_visitor_input_containers_decl(args, obj):
89 QmpInputVisitor *mi = qmp_input_visitor_new_strict(%(obj)s);
90 QapiDeallocVisitor *md;
98 def gen_visitor_input_vars_decl(args):
101 for argname, argtype, optional, structured in parse_args(args):
104 bool has_%(argname)s = false;
106 argname=c_var(argname))
107 if c_type(argtype).endswith("*"):
109 %(argtype)s %(argname)s = NULL;
111 argname=c_var(argname), argtype=c_type(argtype))
114 %(argtype)s %(argname)s = {0};
116 argname=c_var(argname), argtype=c_type(argtype))
121 def gen_visitor_input_block(args, dealloc=False):
123 errparg = '&local_err'
135 qmp_input_visitor_cleanup(mi);
136 md = qapi_dealloc_visitor_new();
137 v = qapi_dealloc_get_visitor(md);
141 v = qmp_input_get_visitor(mi);
144 for argname, argtype, optional, structured in parse_args(args):
147 visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
149 c_name=c_var(argname), name=argname, errp=errparg)
150 ret += gen_err_check(errarg)
152 if (has_%(c_name)s) {
154 c_name=c_var(argname))
157 %(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
159 c_name=c_var(argname), name=argname, argtype=argtype,
160 visitor=type_visitor(argtype), errp=errparg)
161 ret += gen_err_check(errarg)
170 qapi_dealloc_visitor_cleanup(md);
175 def gen_marshal_output(name, args, ret_type, middle_mode):
180 static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp)
182 Error *local_err = NULL;
183 QmpOutputVisitor *mo = qmp_output_visitor_new();
184 QapiDeallocVisitor *md;
187 v = qmp_output_get_visitor(mo);
188 %(visitor)s(v, &ret_in, "unused", &local_err);
192 *ret_out = qmp_output_get_qobject(mo);
195 error_propagate(errp, local_err);
196 qmp_output_visitor_cleanup(mo);
197 md = qapi_dealloc_visitor_new();
198 v = qapi_dealloc_get_visitor(md);
199 %(visitor)s(v, &ret_in, "unused", NULL);
200 qapi_dealloc_visitor_cleanup(md);
203 c_ret_type=c_type(ret_type), c_name=c_fun(name),
204 visitor=type_visitor(ret_type))
208 def gen_marshal_input_decl(name, args, ret_type, middle_mode):
210 return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_fun(name)
212 return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_fun(name)
216 def gen_marshal_input(name, args, ret_type, middle_mode):
217 hdr = gen_marshal_input_decl(name, args, ret_type, middle_mode)
222 Error *local_err = NULL;
228 QDict *args = (QDict *)qdict;
232 if c_type(ret_type).endswith("*"):
233 retval = " %s retval = NULL;" % c_type(ret_type)
235 retval = " %s retval;" % c_type(ret_type)
243 %(visitor_input_containers_decl)s
244 %(visitor_input_vars_decl)s
246 %(visitor_input_block)s
249 visitor_input_containers_decl=gen_visitor_input_containers_decl(args, "QOBJECT(args)"),
250 visitor_input_vars_decl=gen_visitor_input_vars_decl(args),
251 visitor_input_block=gen_visitor_input_block(args))
261 sync_call=gen_sync_call(name, args, ret_type, indent=4))
262 if re.search('^ *goto out\\;', ret, re.MULTILINE):
269 error_propagate(errp, local_err);
272 %(visitor_input_block_cleanup)s
274 visitor_input_block_cleanup=gen_visitor_input_block(args,
281 qerror_report_err(local_err);
282 error_free(local_err);
298 def option_value_matches(opt, val, cmd):
299 if opt in cmd and cmd[opt] == val:
303 def gen_registry(commands):
307 options = 'QCO_NO_OPTIONS'
308 if option_value_matches('success-response', 'no', cmd):
309 options = 'QCO_NO_SUCCESS_RESP'
311 registry += mcgen('''
312 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
314 name=cmd['command'], c_name=c_fun(cmd['command']),
318 static void qmp_init_marshal(void)
323 qapi_init(qmp_init_marshal);
325 registry=registry.rstrip())
328 def gen_command_decl_prologue(header, guard, prefix=""):
330 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
333 * schema-defined QAPI function prototypes
335 * Copyright IBM, Corp. 2011
340 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
341 * See the COPYING.LIB file in the top-level directory.
348 #include "%(prefix)sqapi-types.h"
349 #include "qapi/qmp/qdict.h"
350 #include "qapi/error.h"
353 header=basename(header), guard=guardname(header), prefix=prefix)
356 def gen_command_def_prologue(prefix="", proxy=False):
358 /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
361 * schema-defined QMP->QAPI command dispatch
363 * Copyright IBM, Corp. 2011
368 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
369 * See the COPYING.LIB file in the top-level directory.
373 #include "qemu-common.h"
374 #include "qemu/module.h"
375 #include "qapi/qmp/qerror.h"
376 #include "qapi/qmp/types.h"
377 #include "qapi/qmp/dispatch.h"
378 #include "qapi/visitor.h"
379 #include "qapi/qmp-output-visitor.h"
380 #include "qapi/qmp-input-visitor.h"
381 #include "qapi/dealloc-visitor.h"
382 #include "%(prefix)sqapi-types.h"
383 #include "%(prefix)sqapi-visit.h"
388 ret += '#include "%sqmp-commands.h"' % prefix
393 opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:i:o:m",
394 ["source", "header", "prefix=",
395 "input-file=", "output-dir=",
397 except getopt.GetoptError, err:
403 dispatch_type = "sync"
404 c_file = 'qmp-marshal.c'
405 h_file = 'qmp-commands.h'
412 if o in ("-p", "--prefix"):
414 elif o in ("-i", "--input-file"):
416 elif o in ("-o", "--output-dir"):
418 elif o in ("-t", "--type"):
420 elif o in ("-m", "--middle"):
422 elif o in ("-c", "--source"):
424 elif o in ("-h", "--header"):
427 if not do_c and not do_h:
431 c_file = output_dir + prefix + c_file
432 h_file = output_dir + prefix + h_file
434 def maybe_open(really, name, opt):
436 return open(name, opt)
439 return StringIO.StringIO()
442 os.makedirs(output_dir)
444 if e.errno != errno.EEXIST:
447 exprs = parse_schema(input_file)
448 commands = filter(lambda expr: expr.has_key('command'), exprs)
449 commands = filter(lambda expr: not expr.has_key('gen'), commands)
451 if dispatch_type == "sync":
452 fdecl = maybe_open(do_h, h_file, 'w')
453 fdef = maybe_open(do_c, c_file, 'w')
454 ret = gen_command_decl_prologue(header=basename(h_file), guard=guardname(h_file), prefix=prefix)
456 ret = gen_command_def_prologue(prefix=prefix)
462 if cmd.has_key('data'):
463 arglist = cmd['data']
464 if cmd.has_key('returns'):
465 ret_type = cmd['returns']
466 ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
469 ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
473 fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
475 ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
478 fdecl.write("\n#endif\n");
481 ret = gen_registry(commands)