mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-25 15:05:32 +00:00
8c51980332
Whenever qapi-schema.json changes, we run six programs eleven times to update eleven files. Similar for qga/qapi-schema.json. This is silly. Replace the six programs by a single program that spits out all eleven files. The programs become modules in new Python package qapi, along with the helper library. This requires moving them to scripts/qapi/. While moving them, consistently drop executable mode bits. Backports commit fb0bc835e56b894cbc7236294921e5393c786ad8 from qemu
353 lines
9.2 KiB
Python
353 lines
9.2 KiB
Python
"""
|
|
QAPI visitor generator
|
|
|
|
Copyright IBM, Corp. 2011
|
|
Copyright (C) 2014-2018 Red Hat, Inc.
|
|
|
|
Authors:
|
|
Anthony Liguori <aliguori@us.ibm.com>
|
|
Michael Roth <mdroth@linux.vnet.ibm.com>
|
|
Markus Armbruster <armbru@redhat.com>
|
|
|
|
This work is licensed under the terms of the GNU GPL, version 2.
|
|
See the COPYING file in the top-level directory.
|
|
"""
|
|
|
|
from qapi.common import *
|
|
|
|
|
|
def gen_visit_decl(name, scalar=False):
|
|
c_type = c_name(name) + ' *'
|
|
if not scalar:
|
|
c_type += '*'
|
|
return mcgen('''
|
|
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_type)sobj, Error **errp);
|
|
''',
|
|
c_name=c_name(name), c_type=c_type)
|
|
|
|
|
|
def gen_visit_members_decl(name):
|
|
return mcgen('''
|
|
|
|
void visit_type_%(c_name)s_members(Visitor *v, %(c_name)s *obj, Error **errp);
|
|
''',
|
|
c_name=c_name(name))
|
|
|
|
|
|
def gen_visit_object_members(name, base, members, variants):
|
|
ret = mcgen('''
|
|
|
|
void visit_type_%(c_name)s_members(Visitor *v, %(c_name)s *obj, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
|
|
''',
|
|
c_name=c_name(name))
|
|
|
|
if base:
|
|
ret += mcgen('''
|
|
visit_type_%(c_type)s_members(v, (%(c_type)s *)obj, &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
''',
|
|
c_type=base.c_name())
|
|
|
|
for memb in members:
|
|
if memb.optional:
|
|
ret += mcgen('''
|
|
if (visit_optional(v, "%(name)s", &obj->has_%(c_name)s)) {
|
|
''',
|
|
name=memb.name, c_name=c_name(memb.name))
|
|
push_indent()
|
|
ret += mcgen('''
|
|
visit_type_%(c_type)s(v, "%(name)s", &obj->%(c_name)s, &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
''',
|
|
c_type=memb.type.c_name(), name=memb.name,
|
|
c_name=c_name(memb.name))
|
|
if memb.optional:
|
|
pop_indent()
|
|
ret += mcgen('''
|
|
}
|
|
''')
|
|
|
|
if variants:
|
|
ret += mcgen('''
|
|
switch (obj->%(c_name)s) {
|
|
''',
|
|
c_name=c_name(variants.tag_member.name))
|
|
|
|
for var in variants.variants:
|
|
ret += mcgen('''
|
|
case %(case)s:
|
|
visit_type_%(c_type)s_members(v, &obj->u.%(c_name)s, &err);
|
|
break;
|
|
''',
|
|
case=c_enum_const(variants.tag_member.type.name,
|
|
var.name,
|
|
variants.tag_member.type.prefix),
|
|
c_type=var.type.c_name(), c_name=c_name(var.name))
|
|
|
|
ret += mcgen('''
|
|
default:
|
|
abort();
|
|
}
|
|
''')
|
|
|
|
# 'goto out' produced for base, for each member, and if variants were
|
|
# present
|
|
if base or members or variants:
|
|
ret += mcgen('''
|
|
|
|
out:
|
|
''')
|
|
ret += mcgen('''
|
|
error_propagate(errp, err);
|
|
}
|
|
''')
|
|
return ret
|
|
|
|
|
|
def gen_visit_list(name, element_type):
|
|
return mcgen('''
|
|
|
|
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
%(c_name)s *tail;
|
|
size_t size = sizeof(**obj);
|
|
|
|
visit_start_list(v, name, (GenericList **)obj, size, &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
|
|
for (tail = *obj; tail;
|
|
tail = (%(c_name)s *)visit_next_list(v, (GenericList *)tail, size)) {
|
|
visit_type_%(c_elt_type)s(v, NULL, &tail->value, &err);
|
|
if (err) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!err) {
|
|
visit_check_list(v, &err);
|
|
}
|
|
visit_end_list(v, (void **)obj);
|
|
if (err && visit_is_input(v)) {
|
|
qapi_free_%(c_name)s(*obj);
|
|
*obj = NULL;
|
|
}
|
|
out:
|
|
error_propagate(errp, err);
|
|
}
|
|
''',
|
|
c_name=c_name(name), c_elt_type=element_type.c_name())
|
|
|
|
|
|
def gen_visit_enum(name):
|
|
return mcgen('''
|
|
|
|
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s *obj, Error **errp)
|
|
{
|
|
int value = *obj;
|
|
visit_type_enum(v, name, &value, %(c_name)s_lookup, errp);
|
|
*obj = value;
|
|
}
|
|
''',
|
|
c_name=c_name(name))
|
|
|
|
|
|
def gen_visit_alternate(name, variants):
|
|
ret = mcgen('''
|
|
|
|
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
|
|
visit_start_alternate(v, name, (GenericAlternate **)obj, sizeof(**obj),
|
|
&err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
if (!*obj) {
|
|
goto out_obj;
|
|
}
|
|
switch ((*obj)->type) {
|
|
''',
|
|
c_name=c_name(name))
|
|
|
|
for var in variants.variants:
|
|
ret += mcgen('''
|
|
case %(case)s:
|
|
''',
|
|
case=var.type.alternate_qtype())
|
|
if isinstance(var.type, QAPISchemaObjectType):
|
|
ret += mcgen('''
|
|
visit_start_struct(v, name, NULL, 0, &err);
|
|
if (err) {
|
|
break;
|
|
}
|
|
visit_type_%(c_type)s_members(v, &(*obj)->u.%(c_name)s, &err);
|
|
if (!err) {
|
|
visit_check_struct(v, &err);
|
|
}
|
|
visit_end_struct(v, NULL);
|
|
''',
|
|
c_type=var.type.c_name(),
|
|
c_name=c_name(var.name))
|
|
else:
|
|
ret += mcgen('''
|
|
visit_type_%(c_type)s(v, name, &(*obj)->u.%(c_name)s, &err);
|
|
''',
|
|
c_type=var.type.c_name(),
|
|
c_name=c_name(var.name))
|
|
ret += mcgen('''
|
|
break;
|
|
''')
|
|
|
|
ret += mcgen('''
|
|
case QTYPE_NONE:
|
|
abort();
|
|
default:
|
|
error_setg(&err, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
|
|
"%(name)s");
|
|
}
|
|
out_obj:
|
|
visit_end_alternate(v, (void **)obj);
|
|
if (err && visit_is_input(v)) {
|
|
qapi_free_%(c_name)s(*obj);
|
|
*obj = NULL;
|
|
}
|
|
out:
|
|
error_propagate(errp, err);
|
|
}
|
|
''',
|
|
name=name, c_name=c_name(name))
|
|
|
|
return ret
|
|
|
|
|
|
def gen_visit_object(name, base, members, variants):
|
|
return mcgen('''
|
|
|
|
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
|
|
visit_start_struct(v, name, (void **)obj, sizeof(%(c_name)s), &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
if (!*obj) {
|
|
goto out_obj;
|
|
}
|
|
visit_type_%(c_name)s_members(v, *obj, &err);
|
|
if (err) {
|
|
goto out_obj;
|
|
}
|
|
visit_check_struct(v, &err);
|
|
out_obj:
|
|
visit_end_struct(v, (void **)obj);
|
|
if (err && visit_is_input(v)) {
|
|
qapi_free_%(c_name)s(*obj);
|
|
*obj = NULL;
|
|
}
|
|
out:
|
|
error_propagate(errp, err);
|
|
}
|
|
''',
|
|
c_name=c_name(name))
|
|
|
|
|
|
class QAPISchemaGenVisitVisitor(QAPISchemaVisitor):
|
|
def __init__(self, opt_builtins):
|
|
self._opt_builtins = opt_builtins
|
|
self.decl = None
|
|
self.defn = None
|
|
self._btin = None
|
|
|
|
def visit_begin(self, schema):
|
|
self.decl = ''
|
|
self.defn = ''
|
|
self._btin = '\n' + guardstart('QAPI_VISIT_BUILTIN')
|
|
|
|
def visit_end(self):
|
|
# To avoid header dependency hell, we always generate
|
|
# declarations for built-in types in our header files and
|
|
# simply guard them. See also opt_builtins (command line
|
|
# option -b).
|
|
self._btin += guardend('QAPI_VISIT_BUILTIN')
|
|
self.decl = self._btin + self.decl
|
|
self._btin = None
|
|
|
|
def visit_enum_type(self, name, info, values, prefix):
|
|
# Special case for our lone builtin enum type
|
|
# TODO use something cleaner than existence of info
|
|
if not info:
|
|
self._btin += gen_visit_decl(name, scalar=True)
|
|
if self._opt_builtins:
|
|
self.defn += gen_visit_enum(name)
|
|
else:
|
|
self.decl += gen_visit_decl(name, scalar=True)
|
|
self.defn += gen_visit_enum(name)
|
|
|
|
def visit_array_type(self, name, info, element_type):
|
|
decl = gen_visit_decl(name)
|
|
defn = gen_visit_list(name, element_type)
|
|
if isinstance(element_type, QAPISchemaBuiltinType):
|
|
self._btin += decl
|
|
if self._opt_builtins:
|
|
self.defn += defn
|
|
else:
|
|
self.decl += decl
|
|
self.defn += defn
|
|
|
|
def visit_object_type(self, name, info, base, members, variants):
|
|
# Nothing to do for the special empty builtin
|
|
if name == 'q_empty':
|
|
return
|
|
self.decl += gen_visit_members_decl(name)
|
|
self.defn += gen_visit_object_members(name, base, members, variants)
|
|
# TODO Worth changing the visitor signature, so we could
|
|
# directly use rather than repeat type.is_implicit()?
|
|
if not name.startswith('q_'):
|
|
# only explicit types need an allocating visit
|
|
self.decl += gen_visit_decl(name)
|
|
self.defn += gen_visit_object(name, base, members, variants)
|
|
|
|
def visit_alternate_type(self, name, info, variants):
|
|
self.decl += gen_visit_decl(name)
|
|
self.defn += gen_visit_alternate(name, variants)
|
|
|
|
def gen_visit(schema, output_dir, prefix, opt_builtins):
|
|
blurb = ' * Schema-defined QAPI visitors'
|
|
genc = QAPIGenC(blurb, __doc__)
|
|
genh = QAPIGenH(blurb, __doc__)
|
|
|
|
genc.add(mcgen('''
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "qapi/error.h"
|
|
#include "%(prefix)sqapi-visit.h"
|
|
''',
|
|
prefix=prefix))
|
|
|
|
genh.add(mcgen('''
|
|
#include "qapi/visitor.h"
|
|
#include "qapi/qmp/qerror.h"
|
|
#include "%(prefix)sqapi-types.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
vis = QAPISchemaGenVisitVisitor(opt_builtins)
|
|
schema.visit(vis)
|
|
genc.add(vis.defn)
|
|
genh.add(vis.decl)
|
|
genc.write(output_dir, prefix + 'qapi-visit.c')
|
|
genh.write(output_dir, prefix + 'qapi-visit.h')
|