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validator.py
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validator.py
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from textx.metamodel import metamodel_from_str
from textx.model import children_of_type
import yaml;
import vocabulary;
import os
loc=os.path.dirname(__file__)
grammar = """
Model: seq = Call ('=>' (seq*=Call ))* ;
Call: name= ID '('args= ArgList ')' (op='?')? ;
ArgList: a= Arg? ( ',' a*=Arg) *;
Name: v= ID ;
Arg:
(v = Model | v = INT | v = Name | v = BOOL | v = STRING ) (m ='^')?;
"""
transformModel = metamodel_from_str(grammar)
class QueryModel:
def v(self):
print "A"
def setfunc(*arg):
return QueryModel();
def orFunc(*arg):
return QueryModel();
def andFunc(*arg):
return QueryModel();
def notFunc(*arg):
return QueryModel();
def propFunc(v,pn):
assert isinstance(pn,vocabulary.PropertyTerm)
if not isinstance(v,QueryModel) and not isinstance(v, str):
raise ValueError(v);
def select(cn):
assert isinstance(cn,vocabulary.ClassTerm);
return QueryModel()
def filter(p,v,op):
if isinstance(v,str):
r=currentQuery.find(v)
if (r==-1 and v!="*"):
raise ValueError(v)
assert op in ['in','not in','in all','not in all',"<",">",">=","<=","count>","count<","count=="]
assert isinstance(p,vocabulary.PropertyTerm);
if not isinstance(v,QueryModel) and not isinstance(v, str)and not isinstance(v, int):
raise ValueError(v);
return QueryModel()
def filterQuery(p,v,op):
if isinstance(v,str):
r=currentQuery.find(v)
if (r==-1 and v!="*"):
raise ValueError(v)
assert op in ['in','not in','in all','not in all',"<",">",">=","<=","count>","count<","count=="]
assert isinstance(p,QueryModel) or isinstance(p,vocabulary.PropertyTerm);
if not isinstance(v,QueryModel) and not isinstance(v, str)and not isinstance(v, int):
raise ValueError(v);
return QueryModel()
def orderBy(p,op):
assert op in ["<",">","count>","count<"]
assert isinstance(p,vocabulary.PropertyTerm) or isinstance(p,QueryModel);
return QueryModel()
def count_compare(v0,v,op):
assert op in ["<",">",">=","<=","="]
if not isinstance(v,QueryModel) and not isinstance(v, str)and not isinstance(v, int):
raise ValueError(v);
if not isinstance(v0,QueryModel) and not isinstance(v0, str):
raise ValueError(v);
return QueryModel()
def filter_related(v):
if isinstance(v,str):
r=currentQuery.find(v)
if (r==-1):
raise ValueError(v)
if not isinstance(v,QueryModel) and not isinstance(v, str):
raise ValueError(v);
assert True;
def count():
return
def inverseOf(p):
assert isinstance(p,vocabulary.PropertyTerm);
return p;
def orderByPassCount(s):
return QueryModel();
def top(n):
return QueryModel()
symbols={
"SELECT": select,
"FILTER": filter,
"FILTER_QUERY": filterQuery,
"ORDER_BY": orderBy,
"COUNT_COMPARE": count_compare,
"FILTER_RELATED": filter_related,
"set": setfunc,
"or": orFunc,
#"and": andFunc,
"intersect": andFunc,
"inverseOf": inverseOf,
"not": notFunc,
"COUNT":count,
"CONTEXT":count,
"FIRST":count,
"MAX":count,
"TOP": top,
"MIN":count,
"LAST":count,
"ORDER_BY_PASSING_COUNT": orderByPassCount,
"PROPERTY" : propFunc,
"MAP_BY_PROPERTY": inverseOf
}
class QueryComposer:
def __init__(self,str,voc):
self.str=str;
self.voc=voc;
def parseArg(self,el,vars):
kind=type(el).__name__;
if (kind=="Call"):
return self.parseElement(el,vars);
if (kind=="Name"):
if el.v in self.voc.classTerms:
return self.voc.classTerms[el.v]
if el.v in self.voc.propertyTerms:
return self.voc.propertyTerms[el.v]
raise ValueError(el.v)
if (kind=="Model"):
return self.composeFromModel(el);
return el;
def parseArgList(self,el,vars):
res=[];
if el==None:
return res;
for a in el.a:
res.append(self.parseArg(a.v,vars))
return res;
def parseElement(self,el,vars):
const=None;
if (el.name in symbols):
const=symbols[el.name];
else: raise ValueError(el.name)
args=self.parseArgList(el.args,vars);
return const(*args);
def composeFunction(self,str,vars):
model=transformModel.model_from_str(str);
return self.composeFromModel(model, vars)
def composeFromModel(self, model):
chElements = [];
for el in model.seq:
fv=self.parseElement(el, vars);
if (fv!=None):
chElements.append(fv);
if (len(chElements)==1):
return chElements[0]
return QueryModel()
currentQuery=""
with open(loc+"/questions.txt") as f:
num = 0
for line in f:
if (line[0]=='!'):
ont=vocabulary.Vocabulary(loc+"/"+line[1:len(line)-1])
continue
if not line.strip():
continue;
if (line[0]=='#'):
continue;
vl=line.index('=');
question=line[0:vl]
flow=line[vl+1:len(line)]
#try:
currentQuery=question;
mq=transformModel.model_from_str(flow);
QueryComposer(question,ont).composeFromModel(mq)
num = num +1;
print str(num)+" questions are validated"