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qapi/commands: add #if conditions to commands 

Wrap generated code with #if/#endif using an 'ifcontext' on
QAPIGenCSnippet objects.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180703155648.11933-10-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Line breaks tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Marc-André Lureau 2018-07-03 17:56:43 +02:00 committed by Markus Armbruster
parent d626b6c1ae
commit 1f7b9f3181
2 changed files with 18 additions and 10 deletions
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24
scripts/qapi/commands.py
View File

@ -239,7 +239,7 @@ class QAPISchemaGenCommandVisitor(QAPISchemaModularCVisitor):
QAPISchemaModularCVisitor.__init__(
self, prefix, 'qapi-commands',
' * Schema-defined QAPI/QMP commands', __doc__)
self._regy = ''
self._regy = QAPIGenCCode()
self._visited_ret_types = {}
def _begin_module(self, name):
@ -275,20 +275,28 @@ class QAPISchemaGenCommandVisitor(QAPISchemaModularCVisitor):
void %(c_prefix)sqmp_init_marshal(QmpCommandList *cmds);
''',
c_prefix=c_name(self._prefix, protect=False)))
genc.add(gen_registry(self._regy, self._prefix))
genc.add(gen_registry(self._regy.get_content(), self._prefix))
def visit_command(self, name, info, ifcond, arg_type, ret_type, gen,
success_response, boxed, allow_oob, allow_preconfig):
if not gen:
return
self._genh.add(gen_command_decl(name, arg_type, boxed, ret_type))
# FIXME: If T is a user-defined type, the user is responsible
# for making this work, i.e. to make T's condition the
# conjunction of the T-returning commands' conditions. If T
# is a built-in type, this isn't possible: the
# qmp_marshal_output_T() will be generated unconditionally.
if ret_type and ret_type not in self._visited_ret_types[self._genc]:
self._visited_ret_types[self._genc].add(ret_type)
self._genc.add(gen_marshal_output(ret_type))
self._genh.add(gen_marshal_decl(name))
self._genc.add(gen_marshal(name, arg_type, boxed, ret_type))
self._regy += gen_register_command(name, success_response, allow_oob,
allow_preconfig)
with ifcontext(ret_type.ifcond,
self._genh, self._genc, self._regy):
self._genc.add(gen_marshal_output(ret_type))
with ifcontext(ifcond, self._genh, self._genc, self._regy):
self._genh.add(gen_command_decl(name, arg_type, boxed, ret_type))
self._genh.add(gen_marshal_decl(name))
self._genc.add(gen_marshal(name, arg_type, boxed, ret_type))
self._regy.add(gen_register_command(name, success_response,
allow_oob, allow_preconfig))
def gen_commands(schema, output_dir, prefix):

4
tests/test-qmp-cmds.c
View File

@ -12,12 +12,12 @@
static QmpCommandList qmp_commands;
/* #if defined(TEST_IF_STRUCT) && defined(TEST_IF_CMD) */
#if defined(TEST_IF_STRUCT) && defined(TEST_IF_CMD)
UserDefThree *qmp_TestIfCmd(TestIfStruct *foo, Error **errp)
{
return NULL;
}
/* #endif */
#endif
UserDefThree *qmp_TestCmdReturnDefThree(Error **errp)
{