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-# -*- python -*-
-#
-# $Id$
-#
-#    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 Wireshark distro for API description.
-#  Wireshark 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", "Enum", "Attribute",
-# "Struct" and "Union" nodes.  Then store these nodes in lists.
-#
-# Pass these lists (via an object ref) to the src code
-# generator (ethereal_gen) class and let it do the hard work ! 
-#
-#
-# Dont forget structs can contain embedded structs etc .. so dont forget
-# to peek inside and check :-)
-#
-#
-
-
-"""Ethereal IDL compiler back-end."""
-
-from omniidl import idlast, idltype, idlvisitor, idlutil, output
-import sys, string
-from os import path
-from ethereal_gen import ethereal_gen_C
-
-#
-# This class finds the "Operation" nodes ,Enum Nodes, "Attribute" nodes, Struct Nodes
-# and Union Nodes. Then it hands them off to an instance of the source code generator
-# class "ethereal_gen" 
-#
-
-class EtherealVisitor:
-
-    DEBUG = 0                           # debug flag
-    
-    def __init__(self, st):
-        self.st = st
-        self.oplist = []                # list of operation nodes
-        self.enlist = []                # list of enum nodes
-        self.atlist = []                # list of attribute nodes
-        self.stlist = []                # list of struct nodes
-        self.unlist = []                # list of union nodes
-
-        
-    def visitAST(self, node):
-        if self.DEBUG:
-            print "XXX visitAST() node = ", 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)
-            if isinstance(n, idlast.Attribute):
-                self.visitAttribute(n)
-            if isinstance(n, idlast.Enum):
-                self.visitEnum(n)
-            if isinstance(n, idlast.Struct):
-                self.visitStruct(n)
-            if isinstance(n, idlast.Union):
-                self.visitUnion(n)
-
-            # Check for Typedef structs and unions
-            
-            if isinstance(n, idlast.Typedef):
-                self.visitTypedef(n)    # who are you ?
-                
-                
-    def visitModule(self, node):
-        if self.DEBUG:
-            print "XXX visitModule() node = ", 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)   
-            if isinstance(n, idlast.Attribute):
-                self.visitAttribute(n)
-            if isinstance(n, idlast.Enum):
-                self.visitEnum(n)
-            if isinstance(n, idlast.Struct):
-                self.visitStruct(n)
-            if isinstance(n, idlast.Union):
-                self.visitUnion(n)
-
-            # Check for Typedef structs and unions
-            
-            if isinstance(n, idlast.Typedef):
-                self.visitTypedef(n)    # who are you ?
-
-                                    
-    def visitInterface(self, node):
-        if self.DEBUG:
-            print "XXX visitInterface() node = ", node
-        
-        for c in node.callables():
-            if isinstance(c, idlast.Operation):
-                self.visitOperation(c)
-            if isinstance(c, idlast.Attribute):
-                self.visitAttribute(c)
-                
-        for d in node.contents():
-            if isinstance(d, idlast.Enum):
-                self.visitEnum(d)
-                
-            if isinstance(d, idlast.Struct):
-                self.visitStruct(d)
-
-            if isinstance(d, idlast.Union):
-                self.visitUnion(d)
-                
-            # Check for Typedef structs and unions
-
-            if isinstance(d, idlast.Typedef):
-                self.visitTypedef(d)    # who are you ?
-                
-
-                                
-
-    #
-    # visitOperation
-    #
-    # populates the operations node list "oplist"
-    #
-    #
-    
-    def visitOperation(self,opnode):
-        if not opnode in self.oplist:
-            self.oplist.append(opnode)      # store operation node
-
-    #
-    # visitAttribute
-    #
-    # populates the attribute node list "atlist"
-    #
-    #
-    
-    def visitAttribute(self,atnode):
-        if not atnode in self.atlist:
-            self.atlist.append(atnode)      # store attribute node
-
-
-    #
-    # visitEnum
-    #
-    # populates the Enum node list "enlist"
-    #
-    #
-    
-    def visitEnum(self,enode):
-        if not enode in self.enlist:
-            self.enlist.append(enode)      # store enum node if unique
-
-    #
-    # visitTypedef
-    #
-    # Search to see if its a typedef'd struct, union, or enum
-    #
-    # eg: typdef enum colors {red, green, blue } mycolors;
-    #
-    
-    def visitTypedef(self,td):
-        d = td.aliasType()              # get Type, possibly Declared
-        if isinstance(d,idltype.Declared):
-            self.visitDeclared(d)
-        
-
-    #
-    # visitDeclared
-    #
-    # Search to see if its a struct, union, or enum
-    #
-    #
-    
-    def visitDeclared(self,d):
-        if isinstance(d,idltype.Declared):
-            sue = d.decl()             # grab the struct or union or enum 
-            
-            if isinstance(sue, idlast.Struct):
-                self.visitStruct(sue)                
-            if isinstance(sue, idlast.Union):
-                self.visitUnion(sue)
-            if isinstance(sue, idlast.Enum):
-                self.visitEnum(sue)
-
-
-
-
-    #
-    # visitStruct
-    #
-    # populates the struct node list "stlist"
-    # and checks its members also
-    #
-    #
-    
-    def visitStruct(self,stnode):
-        if not stnode in self.stlist:        
-            self.stlist.append(stnode)      # store struct node if unique and avoid recursive loops
-                                            # if we come across recursive structs
-
-            for m in stnode.members():      # find embedded struct definitions within this
-                mt = m.memberType()
-                if isinstance(mt,idltype.Declared):
-                    self.visitDeclared(mt)      # if declared, then check it out 
-
-
-                                                
-    #
-    # visitUnion
-    #
-    # populates the struct node list "unlist"
-    # and checks its members also
-    #
-    #
-    
-    def visitUnion(self,unnode):
-        if not unnode in self.unlist:
-            self.unlist.append(unnode)      # store union node if unique
-
-            if unnode.constrType():         # enum defined within switch type
-                if isinstance(unnode.switchType(),idltype.Declared):
-                    self.visitDeclared(unnode.switchType())
-
-            for c in unnode.cases():
-                ct =  c.caseType()
-                if isinstance(ct,idltype.Declared):
-                    self.visitDeclared(ct)      # if declared, then check it out 
-                
-        
-
-
-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
-    
-    #
-    # Grab name of main IDL file being compiled.
-    # 
-    # Assumption: Name is of the form   abcdefg.xyz  (eg: CosNaming.idl)
-    #
-    
-    fname = path.basename(tree.file())    # grab basename only, dont care about path
-    nl = string.split(fname,".")[0]       # split name of main IDL file using "." as separator
-                                          # and grab first field (eg: CosNaming)
-
-    if ev.DEBUG:
-        for i in ev.oplist:
-            print "XXX - Operation node ", i, " repoId() = ", i.repoId()
-        for i in ev.atlist:
-            print "XXX - Attribute node ", i, " identifiers() = ", i.identifiers()
-        for i in ev.enlist:
-            print "XXX - Enum node ", i, " repoId() = ", i.repoId()                
-        for i in ev.stlist:
-            print "XXX - Struct node ", i, " repoId() = ", i.repoId()                                             
-        for i in ev.unlist:
-            print "XXX - Union node ", i, " repoId() = ", i.repoId()
-
-            
-    # create a C generator object
-    # and generate some C code
-
-
-
-    
-    eg = ethereal_gen_C(ev.st, string.upper(nl), string.lower(nl), string.capitalize(nl) + " Dissector Using GIOP API") 
-    eg.genCode(ev.oplist, ev.atlist, ev.enlist, ev.stlist, ev.unlist)    # pass them onto the C generator
-    
-
-