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#!/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
def write_channel_enums(writer, channel, client):
messages = filter(lambda m : m.channel == channel, \
channel.client_messages if client else channel.server_messages)
if len(messages) == 0:
return
writer.begin_block("enum")
i = 0;
if client:
prefix = [ "MSGC" ]
else:
prefix = [ "MSG" ]
if channel.member_name:
prefix.append(channel.member_name.upper())
prefix.append(None) # To be replaced with name
for m in messages:
prefix[-1] = m.name.upper()
enum = codegen.prefix_underscore_upper(*prefix)
if m.value == i:
writer.writeln("%s," % enum)
i = i + 1
else:
writer.writeln("%s = %s," % (enum, m.value))
i = m.value + 1
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_enums(writer):
writer.writeln("#ifndef _H_SPICE_ENUMS")
writer.writeln("#define _H_SPICE_ENUMS")
writer.newline()
writer.comment("Generated from %s, don't edit" % writer.options["source"]).newline()
writer.newline()
# Define enums
for t in ptypes.get_named_types():
if isinstance(t, ptypes.EnumBaseType):
t.c_define(writer)
i = 0;
writer.begin_block("enum")
for c in proto.channels:
enum = codegen.prefix_underscore_upper("CHANNEL", c.name.upper())
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()
writer.writeln("SPICE_END_CHANNEL")
writer.end_block(semicolon=True)
writer.newline()
for c in ptypes.get_named_types():
if not isinstance(c, ptypes.ChannelType):
continue
write_channel_enums(writer, c, False)
write_channel_enums(writer, c, True)
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("-d", "--generate-demarshallers",
action="store_true", dest="generate_demarshallers", default=False,
help="Generate demarshallers")
parser.add_option("-a", "--assert-on-error",
action="store_true", dest="assert_on_error", default=False,
help="Assert on error")
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",
dest="include", default=None, metavar="FILE",
help="Include FILE in generated code")
(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")
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.set_option("source", os.path.basename(proto_file))
if options.assert_on_error:
writer.set_option("assert_on_error")
if options.print_error:
writer.set_option("print_error")
if options.include:
writer.writeln('#include "%s"' % options.include)
if options.generate_enums:
write_enums(writer)
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)
content = writer.getvalue()
if options.keep_identical_file:
try:
f = open(dest_file, 'rb')
old_content = f.read()
f.close()
if content == old_content:
print "No changes to %s" % dest_file
sys.exit(0)
except IOError:
pass
f = open(dest_file, 'wb')
f.write(content)
f.close()
print "Wrote %s" % dest_file
sys.exit(0)
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