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![Markus Armbruster](/assets/img/avatar_default.png)
Generate just 'FOO' instead of 'struct FOO' when possible. Drop helper functions that are now unused. Make pep8 and pylint reasonably happy. Rename generate_FOO() functions to gen_FOO() for consistency. Use more consistent and sensible variable names. Consistently use c_ for mapping keys when their value is a C identifier or type. Simplify gen_enum() and gen_visit_union() Consistently use single quotes for C text string literals. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1442401589-24189-14-git-send-email-armbru@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
237 lines
5.3 KiB
Python
237 lines
5.3 KiB
Python
#
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# QAPI event generator
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#
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# Copyright (c) 2014 Wenchao Xia
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# Copyright (c) 2015 Red Hat Inc.
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#
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# Authors:
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# Wenchao Xia <wenchaoqemu@gmail.com>
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# Markus Armbruster <armbru@redhat.com>
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#
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# This work is licensed under the terms of the GNU GPL, version 2.
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# See the COPYING file in the top-level directory.
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from qapi import *
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def gen_event_send_proto(name, arg_type):
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api_name = "void qapi_event_send_%s(" % c_name(name).lower()
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l = len(api_name)
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if arg_type:
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for m in arg_type.members:
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if m.optional:
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api_name += "bool has_%s,\n" % c_name(m.name)
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api_name += "".ljust(l)
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api_name += "%s %s,\n" % (m.type.c_type(is_param=True),
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c_name(m.name))
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api_name += "".ljust(l)
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api_name += "Error **errp)"
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return api_name
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def gen_event_send_decl(name, arg_type):
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return mcgen('''
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%(proto)s;
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''',
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proto=gen_event_send_proto(name, arg_type))
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def gen_event_send(name, arg_type):
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ret = mcgen('''
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%(proto)s
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{
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QDict *qmp;
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Error *local_err = NULL;
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QMPEventFuncEmit emit;
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''',
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proto=gen_event_send_proto(name, arg_type))
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if arg_type and arg_type.members:
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ret += mcgen('''
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QmpOutputVisitor *qov;
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Visitor *v;
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QObject *obj;
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''')
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ret += mcgen('''
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emit = qmp_event_get_func_emit();
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if (!emit) {
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return;
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}
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qmp = qmp_event_build_dict("%(name)s");
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''',
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name=name)
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if arg_type and arg_type.members:
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ret += mcgen('''
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qov = qmp_output_visitor_new();
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g_assert(qov);
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v = qmp_output_get_visitor(qov);
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g_assert(v);
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/* Fake visit, as if all members are under a structure */
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visit_start_struct(v, NULL, "", "%(name)s", 0, &local_err);
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if (local_err) {
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goto clean;
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}
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''',
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name=name)
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for memb in arg_type.members:
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if memb.optional:
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ret += mcgen('''
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if (has_%(c_name)s) {
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''',
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c_name=c_name(memb.name))
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push_indent()
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# Ugly: need to cast away the const
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if memb.type.name == "str":
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cast = '(char **)'
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else:
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cast = ''
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ret += mcgen('''
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visit_type_%(c_type)s(v, %(cast)s&%(c_name)s, "%(name)s", &local_err);
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if (local_err) {
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goto clean;
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}
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''',
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cast=cast,
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c_name=c_name(memb.name),
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c_type=memb.type.c_name(),
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name=memb.name)
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if memb.optional:
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pop_indent()
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ret += mcgen('''
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}
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''')
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ret += mcgen('''
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visit_end_struct(v, &local_err);
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if (local_err) {
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goto clean;
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}
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obj = qmp_output_get_qobject(qov);
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g_assert(obj != NULL);
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qdict_put_obj(qmp, "data", obj);
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''')
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ret += mcgen('''
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emit(%(c_enum)s, qmp, &local_err);
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''',
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c_enum=c_enum_const(event_enum_name, name))
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if arg_type and arg_type.members:
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ret += mcgen('''
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clean:
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qmp_output_visitor_cleanup(qov);
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''')
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ret += mcgen('''
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error_propagate(errp, local_err);
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QDECREF(qmp);
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}
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''')
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return ret
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class QAPISchemaGenEventVisitor(QAPISchemaVisitor):
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def __init__(self):
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self.decl = None
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self.defn = None
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self._event_names = None
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def visit_begin(self, schema):
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self.decl = ''
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self.defn = ''
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self._event_names = []
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def visit_end(self):
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self.decl += gen_enum(event_enum_name, self._event_names)
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self.defn += gen_enum_lookup(event_enum_name, self._event_names)
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self._event_names = None
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def visit_event(self, name, info, arg_type):
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self.decl += gen_event_send_decl(name, arg_type)
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self.defn += gen_event_send(name, arg_type)
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self._event_names.append(name)
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(input_file, output_dir, do_c, do_h, prefix, dummy) = parse_command_line()
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c_comment = '''
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/*
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* schema-defined QAPI event functions
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*
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* Copyright (c) 2014 Wenchao Xia
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*
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* Authors:
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* Wenchao Xia <wenchaoqemu@gmail.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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'''
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h_comment = '''
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/*
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* schema-defined QAPI event functions
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*
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* Copyright (c) 2014 Wenchao Xia
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*
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* Authors:
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* Wenchao Xia <wenchaoqemu@gmail.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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'''
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(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
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'qapi-event.c', 'qapi-event.h',
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c_comment, h_comment)
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fdef.write(mcgen('''
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#include "qemu-common.h"
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#include "%(prefix)sqapi-event.h"
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#include "%(prefix)sqapi-visit.h"
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#include "qapi/qmp-output-visitor.h"
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#include "qapi/qmp-event.h"
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''',
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prefix=prefix))
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fdecl.write(mcgen('''
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#include "qapi/error.h"
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#include "qapi/qmp/qdict.h"
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#include "%(prefix)sqapi-types.h"
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''',
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prefix=prefix))
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event_enum_name = c_name(prefix + "QAPIEvent", protect=False)
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schema = QAPISchema(input_file)
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gen = QAPISchemaGenEventVisitor()
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schema.visit(gen)
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fdef.write(gen.defn)
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fdecl.write(gen.decl)
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close_output(fdef, fdecl)
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