# Authors:
# Anthony Liguori <aliguori@us.ibm.com>
#
-# This work is licensed under the terms of the GNU GPLv2.
-# See the COPYING.LIB file in the top-level directory.
+# This work is licensed under the terms of the GNU GPL, version 2.
+# See the COPYING file in the top-level directory.
from ordereddict import OrderedDict
from qapi import *
-import sys
-import os
-import getopt
-import errno
-def generate_fwd_struct(name, members):
+def generate_fwd_struct(name, members, builtin_type=False):
+ if builtin_type:
+ return mcgen('''
+
+typedef struct %(name)sList
+{
+ union {
+ %(type)s value;
+ uint64_t padding;
+ };
+ struct %(name)sList *next;
+} %(name)sList;
+''',
+ type=c_type(name),
+ name=name)
+
return mcgen('''
+
typedef struct %(name)s %(name)s;
typedef struct %(name)sList
{
- %(name)s *value;
+ union {
+ %(name)s *value;
+ uint64_t padding;
+ };
struct %(name)sList *next;
} %(name)sList;
''',
- name=name)
+ name=c_name(name))
def generate_fwd_enum_struct(name, members):
return mcgen('''
typedef struct %(name)sList
{
- %(name)s value;
+ union {
+ %(name)s value;
+ uint64_t padding;
+ };
struct %(name)sList *next;
} %(name)sList;
''',
- name=name)
+ name=c_name(name))
-def generate_struct(structname, fieldname, members):
- ret = mcgen('''
-struct %(name)s
-{
-''',
- name=structname)
+def generate_struct_fields(members):
+ ret = ''
- for argname, argentry, optional, structured in parse_args(members):
+ for argname, argentry, optional in parse_args(members):
if optional:
ret += mcgen('''
bool has_%(c_name)s;
''',
- c_name=c_var(argname))
- if structured:
- push_indent()
- ret += generate_struct("", argname, argentry)
- pop_indent()
- else:
- ret += mcgen('''
+ c_name=c_name(argname))
+ ret += mcgen('''
%(c_type)s %(c_name)s;
''',
- c_type=c_type(argentry), c_name=c_var(argname))
+ c_type=c_type(argentry), c_name=c_name(argname))
+
+ return ret
+
+def generate_struct(expr):
+
+ structname = expr.get('struct', "")
+ fieldname = expr.get('field', "")
+ members = expr['data']
+ base = expr.get('base')
+
+ ret = mcgen('''
+struct %(name)s
+{
+''',
+ name=c_name(structname))
+
+ if base:
+ ret += generate_struct_fields({'base': base})
+
+ ret += generate_struct_fields(members)
+
+ # Make sure that all structs have at least one field; this avoids
+ # potential issues with attempting to malloc space for zero-length structs
+ # in C, and also incompatibility with C++ (where an empty struct is size 1).
+ if not base and not members:
+ ret += mcgen('''
+ char qapi_dummy_field_for_empty_struct;
+''')
if len(fieldname):
fieldname = " " + fieldname
ret = mcgen('''
const char *%(name)s_lookup[] = {
''',
- name=name)
+ name=c_name(name))
i = 0
for value in values:
+ index = c_enum_const(name, value)
ret += mcgen('''
- "%(value)s",
+ [%(index)s] = "%(value)s",
''',
- value=value)
+ index = index, value = value)
+ max_index = c_enum_const(name, 'MAX')
ret += mcgen('''
- NULL,
+ [%(max_index)s] = NULL,
};
-''')
+''',
+ max_index=max_index)
return ret
-def generate_enum_name(name):
- if name.isupper():
- return c_fun(name)
- new_name = ''
- for c in c_fun(name):
- if c.isupper():
- new_name += '_'
- new_name += c
- return new_name.lstrip('_').upper()
-
def generate_enum(name, values):
+ name = c_name(name)
lookup_decl = mcgen('''
extern const char *%(name)s_lookup[];
''',
i = 0
for value in enum_values:
+ enum_full_value = c_enum_const(name, value)
enum_decl += mcgen('''
- %(abbrev)s_%(value)s = %(i)d,
+ %(enum_full_value)s = %(i)d,
''',
- abbrev=de_camel_case(name).upper(),
- value=generate_enum_name(value),
+ enum_full_value = enum_full_value,
i=i)
i += 1
return lookup_decl + enum_decl
-def generate_union(name, typeinfo):
+def generate_alternate_qtypes(expr):
+
+ name = expr['alternate']
+ members = expr['data']
+
+ ret = mcgen('''
+const int %(name)s_qtypes[QTYPE_MAX] = {
+''',
+ name=c_name(name))
+
+ for key in members:
+ qtype = find_alternate_member_qtype(members[key])
+ assert qtype, "Invalid alternate member"
+
+ ret += mcgen('''
+ [%(qtype)s] = %(enum_const)s,
+''',
+ qtype = qtype,
+ enum_const = c_enum_const(name + 'Kind', key))
+
+ ret += mcgen('''
+};
+''')
+ return ret
+
+
+def generate_union(expr, meta):
+
+ name = c_name(expr[meta])
+ typeinfo = expr['data']
+
+ base = expr.get('base')
+ discriminator = expr.get('discriminator')
+
+ enum_define = discriminator_find_enum_define(expr)
+ if enum_define:
+ discriminator_type_name = enum_define['enum_name']
+ else:
+ discriminator_type_name = '%sKind' % (name)
+
ret = mcgen('''
struct %(name)s
{
- %(name)sKind kind;
+ %(discriminator_type_name)s kind;
union {
void *data;
''',
- name=name)
+ name=name,
+ discriminator_type_name=c_name(discriminator_type_name))
for key in typeinfo:
ret += mcgen('''
%(c_type)s %(c_name)s;
''',
c_type=c_type(typeinfo[key]),
- c_name=c_fun(key))
+ c_name=c_name(key))
ret += mcgen('''
};
+''')
+
+ if base:
+ assert discriminator
+ base_fields = find_struct(base)['data'].copy()
+ del base_fields[discriminator]
+ ret += generate_struct_fields(base_fields)
+ else:
+ assert not discriminator
+
+ ret += mcgen('''
};
''')
+ if meta == 'alternate':
+ ret += mcgen('''
+extern const int %(name)s_qtypes[];
+''',
+ name=name)
+
return ret
def generate_type_cleanup_decl(name):
ret = mcgen('''
-void qapi_free_%(type)s(%(c_type)s obj);
+void qapi_free_%(name)s(%(c_type)s obj);
''',
- c_type=c_type(name),type=name)
+ c_type=c_type(name), name=c_name(name))
return ret
def generate_type_cleanup(name):
ret = mcgen('''
-void qapi_free_%(type)s(%(c_type)s obj)
+
+void qapi_free_%(name)s(%(c_type)s obj)
{
QapiDeallocVisitor *md;
Visitor *v;
md = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(md);
- visit_type_%(type)s(v, &obj, NULL, NULL);
+ visit_type_%(name)s(v, &obj, NULL, NULL);
qapi_dealloc_visitor_cleanup(md);
}
''',
- c_type=c_type(name),type=name)
+ c_type=c_type(name), name=c_name(name))
return ret
+do_builtins = False
-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-types.c'
-h_file = 'qapi-types.h'
-
-do_c = False
-do_h = False
+(input_file, output_dir, do_c, do_h, prefix, opts) = \
+ parse_command_line("b", ["builtins"])
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('''
-/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
+ if o in ("-b", "--builtins"):
+ do_builtins = True
+c_comment = '''
/*
* deallocation functions for schema-defined QAPI types
*
* See the COPYING.LIB file in the top-level directory.
*
*/
-
-#include "qapi/qapi-dealloc-visitor.h"
-#include "%(prefix)sqapi-types.h"
-#include "%(prefix)sqapi-visit.h"
-
-''', prefix=prefix))
-
-fdecl.write(mcgen('''
-/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
-
+'''
+h_comment = '''
/*
* schema-defined QAPI types
*
* See the COPYING.LIB file in the top-level directory.
*
*/
+'''
-#ifndef %(guard)s
-#define %(guard)s
+(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
+ 'qapi-types.c', 'qapi-types.h',
+ c_comment, h_comment)
-#include "qemu-common.h"
+fdef.write(mcgen('''
+#include "qapi/dealloc-visitor.h"
+#include "%(prefix)sqapi-types.h"
+#include "%(prefix)sqapi-visit.h"
''',
- guard=guardname(h_file)))
+ prefix=prefix))
+
+fdecl.write(mcgen('''
+#include <stdbool.h>
+#include <stdint.h>
+
+'''))
-exprs = parse_schema(sys.stdin)
+exprs = parse_schema(input_file)
exprs = filter(lambda expr: not expr.has_key('gen'), exprs)
+fdecl.write(guardstart("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
+for typename in builtin_types.keys():
+ fdecl.write(generate_fwd_struct(typename, None, builtin_type=True))
+fdecl.write(guardend("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
+
for expr in exprs:
ret = "\n"
- if expr.has_key('type'):
- ret += generate_fwd_struct(expr['type'], expr['data'])
+ if expr.has_key('struct'):
+ ret += generate_fwd_struct(expr['struct'], expr['data'])
elif expr.has_key('enum'):
ret += generate_enum(expr['enum'], expr['data']) + "\n"
ret += generate_fwd_enum_struct(expr['enum'], expr['data'])
fdef.write(generate_enum_lookup(expr['enum'], expr['data']))
elif expr.has_key('union'):
ret += generate_fwd_struct(expr['union'], expr['data']) + "\n"
- ret += generate_enum('%sKind' % expr['union'], expr['data'].keys())
- fdef.write(generate_enum_lookup('%sKind' % expr['union'], expr['data'].keys()))
+ enum_define = discriminator_find_enum_define(expr)
+ if not enum_define:
+ ret += generate_enum('%sKind' % expr['union'], expr['data'].keys())
+ fdef.write(generate_enum_lookup('%sKind' % expr['union'],
+ expr['data'].keys()))
+ elif expr.has_key('alternate'):
+ ret += generate_fwd_struct(expr['alternate'], expr['data']) + "\n"
+ ret += generate_enum('%sKind' % expr['alternate'], expr['data'].keys())
+ fdef.write(generate_enum_lookup('%sKind' % expr['alternate'],
+ expr['data'].keys()))
+ fdef.write(generate_alternate_qtypes(expr))
else:
continue
fdecl.write(ret)
+# to avoid header dependency hell, we always generate declarations
+# for built-in types in our header files and simply guard them
+fdecl.write(guardstart("QAPI_TYPES_BUILTIN_CLEANUP_DECL"))
+for typename in builtin_types.keys():
+ fdecl.write(generate_type_cleanup_decl(typename + "List"))
+fdecl.write(guardend("QAPI_TYPES_BUILTIN_CLEANUP_DECL"))
+
+# ...this doesn't work for cases where we link in multiple objects that
+# have the functions defined, so we use -b option to provide control
+# over these cases
+if do_builtins:
+ fdef.write(guardstart("QAPI_TYPES_BUILTIN_CLEANUP_DEF"))
+ for typename in builtin_types.keys():
+ fdef.write(generate_type_cleanup(typename + "List"))
+ fdef.write(guardend("QAPI_TYPES_BUILTIN_CLEANUP_DEF"))
+
for expr in exprs:
ret = "\n"
- if expr.has_key('type'):
- ret += generate_struct(expr['type'], "", expr['data']) + "\n"
- ret += generate_type_cleanup_decl(expr['type'] + "List")
- fdef.write(generate_type_cleanup(expr['type'] + "List") + "\n")
- ret += generate_type_cleanup_decl(expr['type'])
- fdef.write(generate_type_cleanup(expr['type']) + "\n")
+ if expr.has_key('struct'):
+ ret += generate_struct(expr) + "\n"
+ ret += generate_type_cleanup_decl(expr['struct'] + "List")
+ fdef.write(generate_type_cleanup(expr['struct'] + "List") + "\n")
+ ret += generate_type_cleanup_decl(expr['struct'])
+ fdef.write(generate_type_cleanup(expr['struct']) + "\n")
elif expr.has_key('union'):
- ret += generate_union(expr['union'], expr['data'])
+ ret += generate_union(expr, 'union')
ret += generate_type_cleanup_decl(expr['union'] + "List")
fdef.write(generate_type_cleanup(expr['union'] + "List") + "\n")
ret += generate_type_cleanup_decl(expr['union'])
fdef.write(generate_type_cleanup(expr['union']) + "\n")
+ elif expr.has_key('alternate'):
+ ret += generate_union(expr, 'alternate')
+ ret += generate_type_cleanup_decl(expr['alternate'] + "List")
+ fdef.write(generate_type_cleanup(expr['alternate'] + "List") + "\n")
+ ret += generate_type_cleanup_decl(expr['alternate'])
+ fdef.write(generate_type_cleanup(expr['alternate']) + "\n")
elif expr.has_key('enum'):
ret += generate_type_cleanup_decl(expr['enum'] + "List")
fdef.write(generate_type_cleanup(expr['enum'] + "List") + "\n")
continue
fdecl.write(ret)
-fdecl.write('''
-#endif
-''')
-
-fdecl.flush()
-fdecl.close()
-
-fdef.flush()
-fdef.close()
+close_output(fdef, fdecl)
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