spice-common/spice_codegen.py
Frediano Ziglio 0eb567e6fb codegen: Improve header guard generation
Until now, the same header guard was used for all generated .h files.
Now the header guard name is based on the name of the file being
generated so that it's different for each .h file.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
2016-06-24 10:02:06 +01:00

277 lines
9.6 KiB
Python
Executable File

#!/usr/bin/env python
import os
import sys
from optparse import OptionParser
import traceback
from python_modules import spice_parser
from python_modules import ptypes
from python_modules import codegen
from python_modules import demarshal
from python_modules import marshal
import six
def write_channel_enums(writer, channel, client, describe):
messages = list(filter(lambda m : m.channel == channel, \
channel.client_messages if client else channel.server_messages))
if len(messages) == 0:
return
if client:
prefix = [ "MSGC" ]
else:
prefix = [ "MSG" ]
if channel.member_name:
prefix.append(channel.member_name.upper())
if not describe:
writer.begin_block("enum")
else:
writer.begin_block("static const value_string %s_vs[] = " % (codegen.prefix_underscore_lower(*[x.lower() for x in prefix])))
i = 0
prefix.append(None) # To be replaced with name
for m in messages:
prefix[-1] = m.name.upper()
enum = codegen.prefix_underscore_upper(*prefix)
if describe:
writer.writeln("{ %s, \"%s %s\" }," % (enum, "Client" if client else "Server", m.name.upper()))
else:
if m.value == i:
writer.writeln("%s," % enum)
i = i + 1
else:
writer.writeln("%s = %s," % (enum, m.value))
i = m.value + 1
if describe:
writer.writeln("{ 0, NULL }");
else:
if channel.member_name:
prefix[-1] = prefix[-2]
prefix[-2] = "END"
writer.newline()
writer.writeln("%s" % (codegen.prefix_underscore_upper(*prefix)))
writer.end_block(semicolon=True)
writer.newline()
def write_channel_type_enum(writer, describe=False):
i = 0
if describe:
writer.begin_block("static const value_string channel_types_vs[] =")
else:
writer.begin_block("enum")
for c in proto.channels:
enum = codegen.prefix_underscore_upper("CHANNEL", c.name.upper())
if describe:
writer.writeln("{ %s, \"%s\" }," % (enum, c.name.upper()))
else:
if c.value == i:
writer.writeln("%s," % enum)
i = i + 1
else:
writer.writeln("%s = %s," % (enum, c.value))
i = c.value + 1
writer.newline()
if describe:
writer.writeln("{ 0, NULL }")
else:
writer.writeln("SPICE_END_CHANNEL")
writer.end_block(semicolon=True)
writer.newline()
def write_enums(writer, describe=False):
writer.writeln("#ifndef _H_SPICE_ENUMS")
writer.writeln("#define _H_SPICE_ENUMS")
writer.newline()
# Define enums
for t in ptypes.get_named_types():
if isinstance(t, ptypes.EnumBaseType):
t.c_define(writer)
if describe:
t.c_describe(writer)
write_channel_type_enum(writer)
if (describe):
write_channel_type_enum(writer, True)
for c in ptypes.get_named_types():
if not isinstance(c, ptypes.ChannelType):
continue
write_channel_enums(writer, c, False, False)
if describe:
write_channel_enums(writer, c, False, describe)
write_channel_enums(writer, c, True, False)
if describe:
write_channel_enums(writer, c, True, describe)
writer.writeln("#endif /* _H_SPICE_ENUMS */")
parser = OptionParser(usage="usage: %prog [options] <protocol_file> <destination file>")
parser.add_option("-e", "--generate-enums",
action="store_true", dest="generate_enums", default=False,
help="Generate enums")
parser.add_option("-w", "--generate-wireshark-dissector",
action="store_true", dest="generate_dissector", default=False,
help="Generate Wireshark dissector definitions")
parser.add_option("-d", "--generate-demarshallers",
action="store_true", dest="generate_demarshallers", default=False,
help="Generate demarshallers")
parser.add_option("-m", "--generate-marshallers",
action="store_true", dest="generate_marshallers", default=False,
help="Generate message marshallers")
parser.add_option("-P", "--private-marshallers",
action="store_true", dest="private_marshallers", default=False,
help="Generate private message marshallers")
parser.add_option("-M", "--generate-struct-marshaller",
action="append", dest="struct_marshallers",
help="Generate struct marshallers")
parser.add_option("-a", "--assert-on-error",
action="store_true", dest="assert_on_error", default=False,
help="Assert on error")
parser.add_option("-H", "--header",
action="store_true", dest="header", default=False,
help="Generate header")
parser.add_option("-p", "--print-error",
action="store_true", dest="print_error", default=False,
help="Print errors")
parser.add_option("-s", "--server",
action="store_true", dest="server", default=False,
help="Print errors")
parser.add_option("-c", "--client",
action="store_true", dest="client", default=False,
help="Print errors")
parser.add_option("-k", "--keep-identical-file",
action="store_true", dest="keep_identical_file", default=False,
help="Print errors")
parser.add_option("-i", "--include",
action="append", dest="includes", metavar="FILE",
help="Include FILE in generated code")
parser.add_option("--prefix", dest="prefix",
help="set public symbol prefix", default="")
parser.add_option("--ptrsize", dest="ptrsize",
help="set default pointer size", default="4")
(options, args) = parser.parse_args()
if len(args) == 0:
parser.error("No protocol file specified")
if len(args) == 1:
parser.error("No destination file specified")
ptypes.default_pointer_size = int(options.ptrsize)
proto_file = args[0]
dest_file = args[1]
proto = spice_parser.parse(proto_file)
if proto == None:
exit(1)
codegen.set_prefix(proto.name)
writer = codegen.CodeWriter()
writer.header = codegen.CodeWriter()
writer.header.set_option("dest_file", dest_file)
writer.set_option("source", os.path.basename(proto_file))
license = """/*
Copyright (C) 2013 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
"""
writer.public_prefix = options.prefix
writer.writeln("/* this is a file autogenerated by spice_codegen.py */")
writer.write(license)
writer.header.writeln("/* this is a file autogenerated by spice_codegen.py */")
writer.header.write(license)
if not options.header and not options.generate_enums:
writer.writeln("#ifdef HAVE_CONFIG_H")
writer.writeln("#include <config.h>")
writer.writeln("#endif")
if options.assert_on_error:
writer.set_option("assert_on_error")
if options.print_error:
writer.set_option("print_error")
if options.includes:
for i in options.includes:
writer.header.writeln('#include "%s"' % i)
writer.writeln('#include "%s"' % i)
if options.generate_enums or options.generate_dissector:
write_enums(writer, options.generate_dissector)
if options.generate_demarshallers:
if not options.server and not options.client:
print >> sys.stderr, "Must specify client and/or server"
sys.exit(1)
demarshal.write_includes(writer)
if options.server:
demarshal.write_protocol_parser(writer, proto, False)
if options.client:
demarshal.write_protocol_parser(writer, proto, True)
if options.generate_marshallers or (options.struct_marshallers and len(options.struct_marshallers) > 0):
marshal.write_includes(writer)
if options.generate_marshallers:
if not options.server and not options.client:
print >> sys.stderr, "Must specify client and/or server"
sys.exit(1)
if options.server:
marshal.write_protocol_marshaller(writer, proto, False, options.private_marshallers)
if options.client:
marshal.write_protocol_marshaller(writer, proto, True, options.private_marshallers)
if options.struct_marshallers:
for structname in options.struct_marshallers:
t = ptypes.lookup_type(structname)
marshal.write_marshal_ptr_function(writer, t, False)
if options.generate_marshallers or (options.struct_marshallers and len(options.struct_marshallers) > 0):
marshal.write_trailer(writer)
if options.header:
content = writer.header.getvalue()
else:
content = writer.getvalue()
if options.keep_identical_file:
try:
f = open(dest_file, 'rb')
old_content = f.read()
f.close()
if content == old_content:
six.print_("No changes to %s" % dest_file)
sys.exit(0)
except IOError:
pass
f = open(dest_file, 'wb')
if six.PY3:
f.write(bytes(content, 'UTF-8'))
else:
f.write(content)
f.close()
six.print_("Wrote %s" % dest_file)
sys.exit(0)