def substitute(clause, _vars, skolem_constants):
_map = dict(zip(_vars, skolem_constants))
if isinstance(clause, basestring):
term = functs.parse(clause)
return _substitute(term, _map, [])
elif isinstance(clause, list):
return [_substitute(functs.parse(x), _map, []) for x in clause]
else:
raise excps.ParsingException("Ill-formed term: %s") % (clause)
def substitute(clause,_vars,skolem_constants):
_map = dict(zip(_vars,skolem_constants))
if isinstance(clause,basestring):
term = functs.parse(clause)
return _substitute(term,_map,[])
elif isinstance(clause,list):
return [_substitute(functs.parse(x),_map,[]) for x in clause]
else:
raise excps.ParsingException('Ill-formed term: %s')%(clause)
def variabilize_clause_literal(lit,used_vars_map,var_count,**all_plmrks):
_lit = lit.as_string
if all_plmrks == {}:
symlist = ['+','-'] # variabilize input or output placemarkers only:
else:
if all_plmrks['all_plmrks']:
symlist = ['+','-','#'] # variabilize each term that corresponds to a placemarker:
to_be_varbed = {k:lit.terms_types_map[k] for k in lit.terms_types_map if any(x in lit.terms_types_map[k] for x in symlist)}
vars_actually_used = []
vars_terms_map = {}
for key in to_be_varbed:
var = None
if key in used_vars_map:
var = used_vars_map[key]
else:
var_count += 1
var = 'X'+str(var_count)
used_vars_map[key] = var
#_lit = _lit.replace(key,var)
vars_actually_used.append(var)
vars_terms_map.update({key:var})
_lit = subsumption._substitute(functs.parse(_lit), vars_terms_map, [])
return (_lit,used_vars_map,var_count,vars_actually_used)
"""