sylv/scyther
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

- Added test file.

Browse Source 
- Created main file.
This commit is contained in:
ccremers
2005-11-16 16:44:56 +00:00
parent 2fe91a2eb1
commit 9e5a076d7d
3 changed files with 91 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
scripts/if2spdl/parser.py
View File

@@ -7,11 +7,14 @@ from pyparsing import Word, alphanums, alphas, nums, oneOf, restOfLine, OneOrMor
ParseResults, Forward, Combine, Or, Optional,MatchFirst, \
ZeroOrMore, StringEnd, LineEnd, delimitedList, Group, Literal
def parse (str):
def ifParse (str):
# Tokens
lbr = Literal("(").suppress()
rbr = Literal(")").suppress()
com = Literal(",").suppress()
hash = Literal("#").suppress()
equ = Literal("=").suppress()
implies = Literal("=>").suppress()
# Functions to construct tuples etc
def bracket(x):
@@ -35,29 +38,30 @@ def parse (str):
# Message section
Alfabet= alphas+nums+"_$"
Variable = Word("x",Alfabet)
Constant = Word(alphas,Alfabet)
Number = Word(nums)
Variable = Word("x",Alfabet).setName("variable")
Constant = Word(alphas,Alfabet).setName("constant")
Number = Word(nums).setName("number")
Basic = MatchFirst([ Variable, Constant, Number ])
Message = Forward()
TypeInfo = oneOf ("mr nonce pk sk fu table")
TypeMsg = TypeInfo + lbr + Message + rbr
TypeMsg = Group(TypeInfo + lbr + Message + rbr).setName("typeinfo")
CryptOp = oneOf ("crypt scrypt c funct rcrypt tb")
CryptMsg = CryptOp + lbr + Message + com + Message + rbr
SMsg = Literal("s") + lbr + Message + rbr
CryptMsg = Group(CryptOp + lbr + Message + com + Message + rbr).setName("crypt")
SMsg = Group(Literal("s") + lbr + Message + rbr)
Message << Or ([TypeMsg, CryptMsg, SMsg, Basic]) + Optional(Literal("'"))
# Fact section
Request = "request" + btup(4)
Witness = "witness" + btup(4)
Give = "give" + lbr + Message + com + ftup(Literal("f"), 1) + rbr
Secret = "secret" + lbr + Message + com + ftup(Literal("f"),1) + rbr
TimeFact = ftup (Literal("h"), 1)
IntruderKnowledge = ftup (Literal("i"), 1)
MessageFact = ftup(Literal("m"),6)
Principal = ftup(Literal("w"), 7)
Request = Group("request" + btup(4))
Witness = Group("witness" + btup(4))
Give = Group("give" + lbr + Message + com + ftup(Literal("f"),
1) + rbr)
Secret = Group("secret" + lbr + Message + com +
ftup(Literal("f"),1) + rbr)
TimeFact = Group(ftup (Literal("h"), 1))
IntruderKnowledge = Group(ftup (Literal("i"), 1))
MessageFact = Group(ftup(Literal("m"),6))
Principal = Group(ftup(Literal("w"), 7))
Fact = Principal | MessageFact | IntruderKnowledge | TimeFact | Secret | Give | Witness | Request
@@ -67,10 +71,10 @@ def parse (str):
# Rules and labels
rulename = Word (alphanums + "_")
rulecategory = oneOf("Protocol_Rules Invariant_Rules Decomposition_Rules Intruder_Rules Init Goal")
label = "# lb=" + rulename + "," + "type=" + rulecategory
rule = State + Optional("\n" + "=>" + "\n" + State)
label = hash + "lb" + equ + rulename + com + "type" + equ + rulecategory
rule = State + Optional(implies + State)
labeledrule = Group(label + rule)
typeflag = "# option=" + oneOf ("untyped","typed")
typeflag = hash + "option" + equ + oneOf ("untyped","typed")
# A complete file
iffile = typeflag + OneOrMore(labeledrule)
@@ -80,7 +84,4 @@ def parse (str):
return parser.parseString(str)
file = open("NSPK_LOWE.if", "r")
res = parse ("".join(file.readlines() ) )
print res