# -*- python -*-
#
-# $Id: ethereal_be.py,v 1.5 2001/10/12 17:14:41 guy Exp $
+# $Id: ethereal_be.py,v 1.6 2001/11/19 22:58:49 guy Exp $
#
# File : ethereal_be.py
#
#
# Strategy.
#
-# Crawl all the way down all branches until I hit "Operation" nodes
-# and "Attribute" nodes. Then store the "operation" nodes in oplist[]
-# and "attribute" nodes in atlist[].
+# Crawl all the way down all branches until I hit "Operation", "Enum", "Attribute",
+# "Struct" and "Union" nodes. Then store these nodes in lists.
#
-# Pass the obj.oplist[] and obj.atlist[](via an object ref) to the src code
+# 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 ethereal_gen import ethereal_gen_C
#
-# This class finds the "Operation" nodes and "Attribute" nodes, and hands them off
-# to an instance of the source code generator class "ethereal_gen"
+# 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)
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)
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 node.mainFile():
+ if self.DEBUG:
+ print "XXX visitInterface() node = ", node
+
for c in node.callables():
if isinstance(c, idlast.Operation):
self.visitOperation(c)
for d in node.contents():
if isinstance(d, idlast.Enum):
- self.visitEnum(d)
+ 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
#
#
def visitOperation(self,opnode):
- self.oplist.append(opnode) # store operation node
+ if not opnode in self.oplist:
+ self.oplist.append(opnode) # store operation node
#
# visitAttribute
#
def visitAttribute(self,atnode):
- self.atlist.append(atnode) # store attribute node
+ if not atnode in self.atlist:
+ self.atlist.append(atnode) # store attribute node
+
#
# visitEnum
#
- # populates the enum node list "enumlist"
+ # populates the Enum node list "enlist"
#
#
def visitEnum(self,enode):
- #print "XXX - enum found" , enode
- self.enlist.append(enode) # store enum node
+ 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
#
# 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) # pass them onto the C generator
+ eg.genCode(ev.oplist, ev.atlist, ev.enlist, ev.stlist, ev.unlist) # pass them onto the C generator
git.samba.org / obnox / wireshark / wip.git / commitdiff