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# -*- python -*-
#
# $Id: ethereal_be.py,v 1.1 2001/06/18 05:27:16 guy Exp $
#
# File : ethereal_be.py
#
# Author : Frank Singleton (frank.singleton@ericsson.com)
#
# Copyright (C) 2001 Frank Singleton, Ericsson Inc.
#
# This file is a backend to "omniidl", used to generate "Ethereal"
# dissectors from IDL descriptions. The output language generated
# is "C". It will generate code to use the GIOP/IIOP get_CDR_XXX API.
#
#
# Please see packet-giop.h in Ethereal distro for API description.
# Ethereal is available at http://www.ethereal.com/
#
# Omniidl is part of the OmniOrb distribution, and is available at
# http://www.uk.research.att.com/omniORB/omniORB.html
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
#
# Description:
#
# Omniidl Back-end which parses an IDL data structure provided by the frontend
# and generates packet-idl-xxx.[ch] for compiling as a dissector in
# Ethereal IP protocol anlayser.
#
#
#
#
# Strategy.
#
# Crawl all the way down all branches until I hit "Operation" nodes
# store the "operation" nodes in oplist[]
#
# Pass the obj.oplist[] (via an object ref) to the src code generator (ethereal_gen) class.
# and let it do the hard work !
#
#
"""Ethereal IDL compiler back-end."""
from omniidl import idlast, idltype, idlvisitor, idlutil, output
import sys, string
from ethereal_gen import ethereal_gen_C
#
# This class finds the "Operations" nodes, and hands them off
# to an instance of the source code generator class "ethereal_gen"
#
class EtherealVisitor:
def __init__(self, st):
self.st = st
self.oplist = [] # list of operation nodes
self.enumlist = [] # list of enum nodes
def visitAST(self, node):
for n in node.declarations():
if isinstance(n, idlast.Module):
self.visitModule(n)
if isinstance(n, idlast.Interface):
self.visitInterface(n)
if isinstance(n, idlast.Operation):
self.visitOperation(n)
def visitModule(self, node):
for n in node.definitions():
if isinstance(n, idlast.Module):
self.visitModule(n)
if isinstance(n, idlast.Interface):
self.visitInterface(n)
if isinstance(n, idlast.Operation):
self.visitOperation(n)
def visitInterface(self, node):
if node.mainFile():
for c in node.callables():
if isinstance(c, idlast.Operation):
self.visitOperation(c)
#
# visitOperation
#
# populates the operations node list "oplist"
#
#
def visitOperation(self,opnode):
self.oplist.append(opnode) # store operation node
#
# visitExceptions
#
# Given an oplist, generate a list of unique exception
# nodes.
#
def run(tree, args):
st = output.Stream(sys.stdout, 4) # set indent for stream
ev = EtherealVisitor(st) # create visitor object
ev.visitAST(tree) # go find some operations
# create a C generator object
# and generate some C code
eg = ethereal_gen_C(ev.st, "TEST", "test", "Test Dissector Using GIOP API")
eg.genCode(ev.oplist) # pass them onto the C generator
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