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.
19 def gen_command_decl(name, arg_type, ret_type):
21 %(c_type)s qmp_%(c_name)s(%(params)s);
23 c_type=(ret_type and ret_type.c_type()) or 'void',
25 params=gen_params(arg_type, 'Error **errp'))
28 def gen_call(name, arg_type, ret_type):
33 for memb in arg_type.members:
35 argstr += 'has_%s, ' % c_name(memb.name)
36 argstr += '%s, ' % c_name(memb.name)
44 %(lhs)sqmp_%(c_name)s(%(args)s&err);
46 c_name=c_name(name), args=argstr, lhs=lhs)
48 ret += gen_err_check()
51 qmp_marshal_output_%(c_name)s(retval, ret, &err);
53 c_name=ret_type.c_name())
57 def gen_marshal_vars(arg_type, ret_type):
66 c_type=ret_type.c_type())
70 QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args));
71 QapiDeallocVisitor *qdv;
75 for memb in arg_type.members:
78 bool has_%(c_name)s = false;
80 c_name=c_name(memb.name))
82 %(c_type)s %(c_name)s = %(c_null)s;
84 c_name=c_name(memb.name),
85 c_type=memb.type.c_type(),
86 c_null=memb.type.c_null())
97 def gen_marshal_input_visit(arg_type, dealloc=False):
105 qmp_input_visitor_cleanup(qiv);
106 qdv = qapi_dealloc_visitor_new();
107 v = qapi_dealloc_get_visitor(qdv);
111 v = qmp_input_get_visitor(qiv);
114 ret += gen_visit_fields(arg_type.members, skiperr=dealloc)
118 qapi_dealloc_visitor_cleanup(qdv);
123 def gen_marshal_output(ret_type):
126 static void qmp_marshal_output_%(c_name)s(%(c_type)s ret_in, QObject **ret_out, Error **errp)
129 QmpOutputVisitor *qov = qmp_output_visitor_new();
130 QapiDeallocVisitor *qdv;
133 v = qmp_output_get_visitor(qov);
134 visit_type_%(c_name)s(v, &ret_in, "unused", &err);
138 *ret_out = qmp_output_get_qobject(qov);
141 error_propagate(errp, err);
142 qmp_output_visitor_cleanup(qov);
143 qdv = qapi_dealloc_visitor_new();
144 v = qapi_dealloc_get_visitor(qdv);
145 visit_type_%(c_name)s(v, &ret_in, "unused", NULL);
146 qapi_dealloc_visitor_cleanup(qdv);
149 c_type=ret_type.c_type(), c_name=ret_type.c_name())
152 def gen_marshal_proto(name):
153 ret = 'void qmp_marshal_%s(QDict *args, QObject **ret, Error **errp)' % c_name(name)
155 ret = 'static ' + ret
159 def gen_marshal_decl(name):
163 proto=gen_marshal_proto(name))
166 def gen_marshal(name, arg_type, ret_type):
172 proto=gen_marshal_proto(name))
174 ret += gen_marshal_vars(arg_type, ret_type)
175 ret += gen_marshal_input_visit(arg_type)
176 ret += gen_call(name, arg_type, ret_type)
178 if re.search('^ *goto out;', ret, re.MULTILINE):
184 error_propagate(errp, err);
186 ret += gen_marshal_input_visit(arg_type, dealloc=True)
193 def gen_register_command(name, success_response):
194 options = 'QCO_NO_OPTIONS'
195 if not success_response:
196 options = 'QCO_NO_SUCCESS_RESP'
199 qmp_register_command("%(name)s", qmp_marshal_%(c_name)s, %(opts)s);
201 name=name, c_name=c_name(name),
206 def gen_registry(registry):
209 static void qmp_init_marshal(void)
216 qapi_init(qmp_init_marshal);
221 class QAPISchemaGenCommandVisitor(QAPISchemaVisitor):
226 self._visited_ret_types = None
228 def visit_begin(self, schema):
232 self._visited_ret_types = set()
236 self.defn += gen_registry(self._regy)
238 self._visited_ret_types = None
240 def visit_command(self, name, info, arg_type, ret_type,
241 gen, success_response):
244 self.decl += gen_command_decl(name, arg_type, ret_type)
245 if ret_type and ret_type not in self._visited_ret_types:
246 self._visited_ret_types.add(ret_type)
247 self.defn += gen_marshal_output(ret_type)
249 self.decl += gen_marshal_decl(name)
250 self.defn += gen_marshal(name, arg_type, ret_type)
252 self._regy += gen_register_command(name, success_response)
257 (input_file, output_dir, do_c, do_h, prefix, opts) = \
258 parse_command_line("m", ["middle"])
261 if o in ("-m", "--middle"):
266 * schema-defined QMP->QAPI command dispatch
268 * Copyright IBM, Corp. 2011
273 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
274 * See the COPYING.LIB file in the top-level directory.
280 * schema-defined QAPI function prototypes
282 * Copyright IBM, Corp. 2011
287 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
288 * See the COPYING.LIB file in the top-level directory.
293 (fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
294 'qmp-marshal.c', 'qmp-commands.h',
295 c_comment, h_comment)
298 #include "qemu-common.h"
299 #include "qemu/module.h"
300 #include "qapi/qmp/types.h"
301 #include "qapi/qmp/dispatch.h"
302 #include "qapi/visitor.h"
303 #include "qapi/qmp-output-visitor.h"
304 #include "qapi/qmp-input-visitor.h"
305 #include "qapi/dealloc-visitor.h"
306 #include "%(prefix)sqapi-types.h"
307 #include "%(prefix)sqapi-visit.h"
308 #include "%(prefix)sqmp-commands.h"
313 fdecl.write(mcgen('''
314 #include "%(prefix)sqapi-types.h"
315 #include "qapi/qmp/qdict.h"
316 #include "qapi/error.h"
321 schema = QAPISchema(input_file)
322 gen = QAPISchemaGenCommandVisitor()
325 fdecl.write(gen.decl)
327 close_output(fdef, fdecl)