#
# QAPI visitor generator
#
# Copyright IBM, Corp. 2011
#
# Authors:
# Anthony Liguori <aliguori@us.ibm.com>
# Michael Roth <mdroth@linux.vnet.ibm.com>
#
# This work is licensed under the terms of the GNU GPLv2.
# See the COPYING.LIB file in the top-level directory.
from ordereddict import OrderedDict
from qapi import *
import sys
import os
import getopt
import errno
def generate_visit_struct_body(field_prefix, name, members):
ret = mcgen('''
if (!error_is_set(errp)) {
''')
push_indent()
if len(field_prefix):
field_prefix = field_prefix + "."
ret += mcgen('''
Error **errp = &err; /* from outer scope */
Error *err = NULL;
visit_start_struct(m, NULL, "", "%(name)s", 0, &err);
''',
name=name)
else:
ret += mcgen('''
Error *err = NULL;
visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s), &err);
''',
name=name)
ret += mcgen('''
if (!err) {
if (!obj || *obj) {
''')
push_indent()
push_indent()
for argname, argentry, optional, structured in parse_args(members):
if optional:
ret += mcgen('''
visit_start_optional(m, obj ? &(*obj)->%(c_prefix)shas_%(c_name)s : NULL, "%(name)s", &err);
if (obj && (*obj)->%(prefix)shas_%(c_name)s) {
''',
c_prefix=c_var(field_prefix), prefix=field_prefix,
c_name=c_var(argname), name=argname)
push_indent()
if structured:
ret += generate_visit_struct_body(field_prefix + argname, argname, argentry)
else:
ret += mcgen('''
visit_type_%(type)s(m, obj ? &(*obj)->%(c_prefix)s%(c_name)s : NULL, "%(name)s", &err);
''',
c_prefix=c_var(field_prefix), prefix=field_prefix,
type=type_name(argentry), c_name=c_var(argname),
name=argname)
if optional:
pop_indent()
ret += mcgen('''
}
visit_end_optional(m, &err);
''')
pop_indent()
ret += mcgen('''
error_propagate(errp, err);
err = NULL;
}
''')
pop_indent()
pop_indent()
ret += mcgen('''
/* Always call end_struct if start_struct succeeded. */
visit_end_struct(m, &err);
}
error_propagate(errp, err);
}
''')
return ret
def generate_visit_struct(name, members):
ret = mcgen('''
void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp)
{
''',
name=name)
push_indent()
ret += generate_visit_struct_body("", name, members)
pop_indent()
ret += mcgen('''
}
''')
return ret
def generate_visit_list(name, members):
return mcgen('''
void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp)
{
GenericList *i, **prev = (GenericList **)obj;
Error *err = NULL;
if (!error_is_set(errp)) {
visit_start_list(m, name, &err);
if (!err) {
for (; (i = visit_next_list(m, prev, &err)) != NULL; prev = &i) {
%(name)sList *native_i = (%(name)sList *)i;
visit_type_%(name)s(m, &native_i->value, NULL, &err);
}
error_propagate(errp, err);
err = NULL;
/* Always call end_list if start_list succeeded. */
visit_end_list(m, &err);
}
error_propagate(errp, err);
}
}
''',
name=name)
def generate_visit_enum(name, members):
return mcgen('''
void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **errp)
{
visit_type_enum(m, (int *)obj, %(name)s_lookup, "%(name)s", name, errp);
}
''',
name=name)
def generate_visit_union(name, members):
ret = generate_visit_enum('%sKind' % name, members.keys())
ret += mcgen('''
void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp)
{
Error *err = NULL;
if (!error_is_set(errp)) {
visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s), &err);
if (!err) {
if (obj && *obj) {
visit_type_%(name)sKind(m, &(*obj)->kind, "type", &err);
if (!err) {
switch ((*obj)->kind) {
''',
name=name)
push_indent()
push_indent()
for key in members:
ret += mcgen('''
case %(abbrev)s_KIND_%(enum)s:
visit_type_%(c_type)s(m, &(*obj)->%(c_name)s, "data", &err);
break;
''',
abbrev = de_camel_case(name).upper(),
enum = c_fun(de_camel_case(key),False).upper(),
c_type=members[key],
c_name=c_fun(key))
ret += mcgen('''
default:
abort();
}
}
error_propagate(errp, err);
err = NULL;
}
''')
pop_indent()
ret += mcgen('''
/* Always call end_struct if start_struct succeeded. */
visit_end_struct(m, &err);
}
error_propagate(errp, err);
}
''')
pop_indent();
ret += mcgen('''
}
''')
return ret
def generate_declaration(name, members, genlist=True):
ret = mcgen('''
void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp);
''',
name=name)
if genlist:
ret += mcgen('''
void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp);
''',
name=name)
return ret
def generate_enum_declaration(name, members, genlist=True):
ret = ""
if genlist:
ret += mcgen('''
void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp);
''',
name=name)
return ret
def generate_decl_enum(name, members, genlist=True):
return mcgen('''
void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **errp);
''',
name=name)
try:
opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:",
["source", "header", "prefix=", "output-dir="])
except getopt.GetoptError, err:
print str(err)
sys.exit(1)
output_dir = ""
prefix = ""
c_file = 'qapi-visit.c'
h_file = 'qapi-visit.h'
do_c = False
do_h = False
for o, a in opts:
if o in ("-p", "--prefix"):
prefix = a
elif o in ("-o", "--output-dir"):
output_dir = a + "/"
elif o in ("-c", "--source"):
do_c = True
elif o in ("-h", "--header"):
do_h = True
if not do_c and not do_h:
do_c = True
do_h = True
c_file = output_dir + prefix + c_file
h_file = output_dir + prefix + h_file
try:
os.makedirs(output_dir)
except os.error, e:
if e.errno != errno.EEXIST:
raise
def maybe_open(really, name, opt):
if really:
return open(name, opt)
else:
import StringIO
return StringIO.StringIO()
fdef = maybe_open(do_c, c_file, 'w')
fdecl = maybe_open(do_h, h_file, 'w')
fdef.write(mcgen('''
/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
/*
* schema-defined QAPI visitor functions
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu-common.h"
#include "%(header)s"
''',
header=basename(h_file)))
fdecl.write(mcgen('''
/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
/*
* schema-defined QAPI visitor function
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#ifndef %(guard)s
#define %(guard)s
#include "qapi/visitor.h"
#include "%(prefix)sqapi-types.h"
''',
prefix=prefix, guard=guardname(h_file)))
exprs = parse_schema(sys.stdin)
for expr in exprs:
if expr.has_key('type'):
ret = generate_visit_struct(expr['type'], expr['data'])
ret += generate_visit_list(expr['type'], expr['data'])
fdef.write(ret)
ret = generate_declaration(expr['type'], expr['data'])
fdecl.write(ret)
elif expr.has_key('union'):
ret = generate_visit_union(expr['union'], expr['data'])
ret += generate_visit_list(expr['union'], expr['data'])
fdef.write(ret)
ret = generate_decl_enum('%sKind' % expr['union'], expr['data'].keys())
ret += generate_declaration(expr['union'], expr['data'])
fdecl.write(ret)
elif expr.has_key('enum'):
ret = generate_visit_list(expr['enum'], expr['data'])
ret += generate_visit_enum(expr['enum'], expr['data'])
fdef.write(ret)
ret = generate_decl_enum(expr['enum'], expr['data'])
ret += generate_enum_declaration(expr['enum'], expr['data'])
fdecl.write(ret)
fdecl.write('''
#endif
''')
fdecl.flush()
fdecl.close()
fdef.flush()
fdef.close()
