def idClone(c, symbols):
if isinstance(c, symbol.Id):
return c
if isinstance(c, symbol.Id):
ast = ast.Ast(ast.ID)
ast.val = c.name
ast.mod = ""
result = symbol.Id(ast, c)
return result
if isinstance(c, symbol.Case):
result = symbol.Seq(None)
result.case = c
result.caseMatch = result.isSuperType(c.type(symbols), symbols)
for s in c.syntax:
result.syntax.append(idClone(s, symbols))
return result
if isinstance(c, symbol.Seq):
result = symbol.Seq(None)
result.case = c.case
result.caseMatch = c.caseMatch
for s in c.syntax:
result.syntax.append(idClone(s, symbols))
return result
if isinstance(c, symbol.List):
result = symbol.List(None)
result.arg = idClone(c.arg, symbols)
return result
return c
def canJudge(self, defn, nt, envs, args):
#make the key and close it
key = symbol.Seq(None)
key.syntax = envs + args
ke = [key]
self.envClosure(ke)
#check if we have the key and for the right defn and nt
for k in ke:
if k in self and self[k]:
for c in self[k]:
if c.nt == nt and c.defn == defn:
return True
return False
def freshOld(self, clone):
if not util.interestingRoot(clone):
return clone
if isinstance(clone, symbol.Id):
result = symbol.FreshId(clone.symbol, self.getFreshNum(clone.name))
result.name = clone.name
return result
elif isinstance(clone, symbol.List):
result = symbol.List(None)
result.arg = self.freshOld(clone.arg)
return result
elif isinstance(clone, symbol.Symbol):
return symbol.FreshId(clone, self.getFreshNum(clone.shortString()))
elif isinstance(clone, symbol.Seq):
result = symbol.Seq(None)
result.syntax = map(lambda x: self.freshOld(x), clone.syntax)
return result
else:
print "Error: can't clone " + str(clone)
return symbol.ErrSym()
def rename(s, old, new):
if isinstance(s, symbol.Id):
if s == old:
return new
else:
return s
elif isinstance(s, symbol.List):
if isinstance(old, symbol.List):
result = symbol.List(None)
result.arg = rename(s.arg, old.arg, new.arg)
result.repr = s.repr
return result
else:
return s
elif isinstance(s, symbol.Seq):
result = symbol.Seq(None)
result.syntax = map(lambda x: rename(x, old, new), s.syntax)
result.repr = s.repr
return result
print "Internal error, could not handle " + str(s) + " in rename."
return s
def fresh(self, clone, listDepth=0):
if not util.interestingRoot(clone):
return clone
if isinstance(clone, symbol.Id):
result = symbol.Id(None, clone.symbol)
result.name = clone.name
result = self.makeFresh(result, listDepth)
elif isinstance(clone, symbol.Symbol):
result = self.makeFresh(symbol.Id(None, clone), listDepth)
elif isinstance(clone, symbol.List):
result = symbol.List(None)
result.arg = self.fresh(clone.arg, listDepth + 1)
elif isinstance(clone, symbol.Seq):
result = symbol.Seq(None)
result.syntax = map(lambda x: self.fresh(x, listDepth),
clone.syntax)
else:
print "Error: can't clone " + str(clone)
return symbol.ErrSym()
if listDepth == 0:
self.regVars.add(result)
return result