2 # QAPI command marshaller generator
4 # Copyright IBM, Corp. 2011
5 # Copyright (C) 2014-2015 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
19 def generate_command_decl(name, args, ret_type):
21 for argname, argtype, optional in parse_args(args):
22 argtype = c_type(argtype, is_param=True)
24 arglist += "bool has_%s, " % c_name(argname)
25 arglist += "%s %s, " % (argtype, c_name(argname))
27 %(ret_type)s qmp_%(name)s(%(args)sError **errp);
29 ret_type=c_type(ret_type), name=c_name(name),
32 def gen_err_check(err):
42 def gen_sync_call(name, args, ret_type):
48 for argname, argtype, optional in parse_args(args):
50 arglist += "has_%s, " % c_name(argname)
51 arglist += "%s, " % (c_name(argname))
54 %(retval)sqmp_%(name)s(%(args)s&local_err);
56 name=c_name(name), args=arglist, retval=retval)
58 ret += gen_err_check('local_err')
61 qmp_marshal_output_%(c_name)s(retval, ret, &local_err);
67 def gen_visitor_input_containers_decl(args):
73 QmpInputVisitor *mi = qmp_input_visitor_new_strict(QOBJECT(args));
74 QapiDeallocVisitor *md;
81 def gen_visitor_input_vars_decl(args):
84 for argname, argtype, optional in parse_args(args):
87 bool has_%(argname)s = false;
89 argname=c_name(argname))
92 %(argtype)s %(argname)s = NULL;
94 argname=c_name(argname), argtype=c_type(argtype))
97 %(argtype)s %(argname)s = {0};
99 argname=c_name(argname), argtype=c_type(argtype))
104 def gen_visitor_input_block(args, dealloc=False):
106 errparg = '&local_err'
118 qmp_input_visitor_cleanup(mi);
119 md = qapi_dealloc_visitor_new();
120 v = qapi_dealloc_get_visitor(md);
124 v = qmp_input_get_visitor(mi);
127 for argname, argtype, optional in parse_args(args):
130 visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
132 c_name=c_name(argname), name=argname, errp=errparg)
133 ret += gen_err_check(errarg)
135 if (has_%(c_name)s) {
137 c_name=c_name(argname))
140 visit_type_%(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
142 c_name=c_name(argname), name=argname, argtype=argtype,
143 visitor=type_name(argtype), errp=errparg)
144 ret += gen_err_check(errarg)
153 qapi_dealloc_visitor_cleanup(md);
158 def gen_marshal_output(name, ret_type):
163 static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp)
165 Error *local_err = NULL;
166 QmpOutputVisitor *mo = qmp_output_visitor_new();
167 QapiDeallocVisitor *md;
170 v = qmp_output_get_visitor(mo);
171 visit_type_%(visitor)s(v, &ret_in, "unused", &local_err);
175 *ret_out = qmp_output_get_qobject(mo);
178 error_propagate(errp, local_err);
179 qmp_output_visitor_cleanup(mo);
180 md = qapi_dealloc_visitor_new();
181 v = qapi_dealloc_get_visitor(md);
182 visit_type_%(visitor)s(v, &ret_in, "unused", NULL);
183 qapi_dealloc_visitor_cleanup(md);
186 c_ret_type=c_type(ret_type), c_name=c_name(name),
187 visitor=type_name(ret_type))
191 def gen_marshal_input_decl(name, middle_mode):
192 ret = 'void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_name(name)
194 ret = "static " + ret
197 def gen_marshal_input(name, args, ret_type, middle_mode):
198 hdr = gen_marshal_input_decl(name, middle_mode)
203 Error *local_err = NULL;
211 c_type=c_type(ret_type))
214 ret += gen_visitor_input_containers_decl(args)
215 ret += gen_visitor_input_vars_decl(args) + '\n'
216 ret += gen_visitor_input_block(args) + '\n'
224 ret += gen_sync_call(name, args, ret_type)
226 if re.search('^ *goto out\\;', ret, re.MULTILINE):
232 error_propagate(errp, local_err);
234 ret += gen_visitor_input_block(args, dealloc=True)
240 def gen_registry(commands):
244 options = 'QCO_NO_OPTIONS'
245 if not cmd.get('success-response', True):
246 options = 'QCO_NO_SUCCESS_RESP'
248 registry += mcgen('''
249 qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
251 name=cmd['command'], c_name=c_name(cmd['command']),
255 static void qmp_init_marshal(void)
262 qapi_init(qmp_init_marshal);
268 (input_file, output_dir, do_c, do_h, prefix, opts) = \
269 parse_command_line("m", ["middle"])
272 if o in ("-m", "--middle"):
275 exprs = QAPISchema(input_file).get_exprs()
276 commands = filter(lambda expr: expr.has_key('command'), exprs)
277 commands = filter(lambda expr: not expr.has_key('gen'), commands)
281 * schema-defined QMP->QAPI command dispatch
283 * Copyright IBM, Corp. 2011
288 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
289 * See the COPYING.LIB file in the top-level directory.
295 * schema-defined QAPI function prototypes
297 * Copyright IBM, Corp. 2011
302 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
303 * See the COPYING.LIB file in the top-level directory.
308 (fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
309 'qmp-marshal.c', 'qmp-commands.h',
310 c_comment, h_comment)
313 #include "qemu-common.h"
314 #include "qemu/module.h"
315 #include "qapi/qmp/types.h"
316 #include "qapi/qmp/dispatch.h"
317 #include "qapi/visitor.h"
318 #include "qapi/qmp-output-visitor.h"
319 #include "qapi/qmp-input-visitor.h"
320 #include "qapi/dealloc-visitor.h"
321 #include "%(prefix)sqapi-types.h"
322 #include "%(prefix)sqapi-visit.h"
323 #include "%(prefix)sqmp-commands.h"
328 fdecl.write(mcgen('''
329 #include "%(prefix)sqapi-types.h"
330 #include "qapi/qmp/qdict.h"
331 #include "qapi/error.h"
339 if cmd.has_key('data'):
340 arglist = cmd['data']
341 if cmd.has_key('returns'):
342 ret_type = cmd['returns']
343 ret = generate_command_decl(cmd['command'], arglist, ret_type)
346 ret = gen_marshal_output(cmd['command'], ret_type) + "\n"
350 fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], middle_mode))
352 ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
356 ret = gen_registry(commands)
359 close_output(fdef, fdecl)