root / scripts / qapi-visit.py @ 06d64c62
History | View | Annotate | Download (6.1 kB)
1 |
#
|
---|---|
2 |
# QAPI visitor generator
|
3 |
#
|
4 |
# Copyright IBM, Corp. 2011
|
5 |
#
|
6 |
# Authors:
|
7 |
# Anthony Liguori <aliguori@us.ibm.com>
|
8 |
# Michael Roth <mdroth@linux.vnet.ibm.com>
|
9 |
#
|
10 |
# This work is licensed under the terms of the GNU GPLv2.
|
11 |
# See the COPYING.LIB file in the top-level directory.
|
12 |
|
13 |
from ordereddict import OrderedDict |
14 |
from qapi import * |
15 |
import sys |
16 |
import os |
17 |
import getopt |
18 |
import errno |
19 |
|
20 |
def generate_visit_struct_body(field_prefix, members): |
21 |
ret = ""
|
22 |
if len(field_prefix): |
23 |
field_prefix = field_prefix + "."
|
24 |
for argname, argentry, optional, structured in parse_args(members):
|
25 |
if optional:
|
26 |
ret += mcgen('''
|
27 |
visit_start_optional(m, (obj && *obj) ? &(*obj)->%(c_prefix)shas_%(c_name)s : NULL, "%(name)s", errp);
|
28 |
if ((*obj)->%(prefix)shas_%(c_name)s) {
|
29 |
''',
|
30 |
c_prefix=c_var(field_prefix), prefix=field_prefix, |
31 |
c_name=c_var(argname), name=argname) |
32 |
push_indent() |
33 |
|
34 |
if structured:
|
35 |
ret += mcgen('''
|
36 |
visit_start_struct(m, NULL, "", "%(name)s", 0, errp);
|
37 |
''',
|
38 |
name=argname) |
39 |
ret += generate_visit_struct_body(field_prefix + argname, argentry) |
40 |
ret += mcgen('''
|
41 |
visit_end_struct(m, errp);
|
42 |
''')
|
43 |
else:
|
44 |
ret += mcgen('''
|
45 |
visit_type_%(type)s(m, (obj && *obj) ? &(*obj)->%(c_prefix)s%(c_name)s : NULL, "%(name)s", errp);
|
46 |
''',
|
47 |
c_prefix=c_var(field_prefix), prefix=field_prefix, |
48 |
type=type_name(argentry), c_name=c_var(argname), |
49 |
name=argname) |
50 |
|
51 |
if optional:
|
52 |
pop_indent() |
53 |
ret += mcgen('''
|
54 |
}
|
55 |
visit_end_optional(m, errp);
|
56 |
''')
|
57 |
return ret
|
58 |
|
59 |
def generate_visit_struct(name, members): |
60 |
ret = mcgen('''
|
61 |
|
62 |
void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp)
|
63 |
{
|
64 |
visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s), errp);
|
65 |
''',
|
66 |
name=name) |
67 |
push_indent() |
68 |
ret += generate_visit_struct_body("", members)
|
69 |
pop_indent() |
70 |
|
71 |
ret += mcgen('''
|
72 |
visit_end_struct(m, errp);
|
73 |
}
|
74 |
''')
|
75 |
return ret
|
76 |
|
77 |
def generate_visit_list(name, members): |
78 |
return mcgen(''' |
79 |
|
80 |
void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp)
|
81 |
{
|
82 |
GenericList *i;
|
83 |
|
84 |
visit_start_list(m, name, errp);
|
85 |
|
86 |
for (i = visit_next_list(m, (GenericList **)obj, errp); i; i = visit_next_list(m, &i, errp)) {
|
87 |
%(name)sList *native_i = (%(name)sList *)i;
|
88 |
visit_type_%(name)s(m, &native_i->value, NULL, errp);
|
89 |
}
|
90 |
|
91 |
visit_end_list(m, errp);
|
92 |
}
|
93 |
''',
|
94 |
name=name) |
95 |
|
96 |
def generate_visit_enum(name, members): |
97 |
return mcgen(''' |
98 |
|
99 |
void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **errp)
|
100 |
{
|
101 |
visit_type_enum(m, (int *)obj, %(name)s_lookup, "%(name)s", name, errp);
|
102 |
}
|
103 |
''',
|
104 |
name=name) |
105 |
|
106 |
def generate_visit_union(name, members): |
107 |
ret = generate_visit_enum('%sKind' % name, members.keys())
|
108 |
|
109 |
ret += mcgen('''
|
110 |
|
111 |
void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp)
|
112 |
{
|
113 |
}
|
114 |
''',
|
115 |
name=name) |
116 |
|
117 |
return ret
|
118 |
|
119 |
def generate_declaration(name, members, genlist=True): |
120 |
ret = mcgen('''
|
121 |
|
122 |
void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp);
|
123 |
''',
|
124 |
name=name) |
125 |
|
126 |
if genlist:
|
127 |
ret += mcgen('''
|
128 |
void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp);
|
129 |
''',
|
130 |
name=name) |
131 |
|
132 |
return ret
|
133 |
|
134 |
def generate_decl_enum(name, members, genlist=True): |
135 |
return mcgen(''' |
136 |
|
137 |
void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **errp);
|
138 |
''',
|
139 |
name=name) |
140 |
|
141 |
try:
|
142 |
opts, args = getopt.gnu_getopt(sys.argv[1:], "p:o:", ["prefix=", "output-dir="]) |
143 |
except getopt.GetoptError, err:
|
144 |
print str(err) |
145 |
sys.exit(1)
|
146 |
|
147 |
output_dir = ""
|
148 |
prefix = ""
|
149 |
c_file = 'qapi-visit.c'
|
150 |
h_file = 'qapi-visit.h'
|
151 |
|
152 |
for o, a in opts: |
153 |
if o in ("-p", "--prefix"): |
154 |
prefix = a |
155 |
elif o in ("-o", "--output-dir"): |
156 |
output_dir = a + "/"
|
157 |
|
158 |
c_file = output_dir + prefix + c_file |
159 |
h_file = output_dir + prefix + h_file |
160 |
|
161 |
try:
|
162 |
os.makedirs(output_dir) |
163 |
except os.error, e:
|
164 |
if e.errno != errno.EEXIST:
|
165 |
raise
|
166 |
|
167 |
fdef = open(c_file, 'w') |
168 |
fdecl = open(h_file, 'w') |
169 |
|
170 |
fdef.write(mcgen('''
|
171 |
/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
|
172 |
|
173 |
/*
|
174 |
* schema-defined QAPI visitor functions
|
175 |
*
|
176 |
* Copyright IBM, Corp. 2011
|
177 |
*
|
178 |
* Authors:
|
179 |
* Anthony Liguori <aliguori@us.ibm.com>
|
180 |
*
|
181 |
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
182 |
* See the COPYING.LIB file in the top-level directory.
|
183 |
*
|
184 |
*/
|
185 |
|
186 |
#include "%(header)s"
|
187 |
''',
|
188 |
header=basename(h_file))) |
189 |
|
190 |
fdecl.write(mcgen('''
|
191 |
/* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
|
192 |
|
193 |
/*
|
194 |
* schema-defined QAPI visitor function
|
195 |
*
|
196 |
* Copyright IBM, Corp. 2011
|
197 |
*
|
198 |
* Authors:
|
199 |
* Anthony Liguori <aliguori@us.ibm.com>
|
200 |
*
|
201 |
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
202 |
* See the COPYING.LIB file in the top-level directory.
|
203 |
*
|
204 |
*/
|
205 |
|
206 |
#ifndef %(guard)s
|
207 |
#define %(guard)s
|
208 |
|
209 |
#include "qapi/qapi-visit-core.h"
|
210 |
#include "%(prefix)sqapi-types.h"
|
211 |
''',
|
212 |
prefix=prefix, guard=guardname(h_file))) |
213 |
|
214 |
exprs = parse_schema(sys.stdin) |
215 |
|
216 |
for expr in exprs: |
217 |
if expr.has_key('type'): |
218 |
ret = generate_visit_struct(expr['type'], expr['data']) |
219 |
ret += generate_visit_list(expr['type'], expr['data']) |
220 |
fdef.write(ret) |
221 |
|
222 |
ret = generate_declaration(expr['type'], expr['data']) |
223 |
fdecl.write(ret) |
224 |
elif expr.has_key('union'): |
225 |
ret = generate_visit_union(expr['union'], expr['data']) |
226 |
fdef.write(ret) |
227 |
|
228 |
ret = generate_decl_enum('%sKind' % expr['union'], expr['data'].keys()) |
229 |
ret += generate_declaration(expr['union'], expr['data']) |
230 |
fdecl.write(ret) |
231 |
elif expr.has_key('enum'): |
232 |
ret = generate_visit_enum(expr['enum'], expr['data']) |
233 |
fdef.write(ret) |
234 |
|
235 |
ret = generate_decl_enum(expr['enum'], expr['data']) |
236 |
fdecl.write(ret) |
237 |
|
238 |
fdecl.write('''
|
239 |
#endif
|
240 |
''')
|
241 |
|
242 |
fdecl.flush() |
243 |
fdecl.close() |
244 |
|
245 |
fdef.flush() |
246 |
fdef.close() |